Abstract

The present invention provides an electric compressor comprising: a driving unit accommodating a motor therein; a compression unit provided on one side of the driving unit, driven by means of the driving unit, and for compressing a refrigerant which has been drawn in; and an inverter unit provided on the other side of the driving unit and controlling the motor, wherein the inverter unit comprises: an inverter bracket coupled to the driving unit; a controlling means mounted on an inner wall of the inverter bracket and for controlling the motor; and a bus bar assembly covering the controlling means from one side of the controlling means and electrically connected to the motor and the controlling means.

IPC Classes  ?

• F04B 35/04 - Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
• F04B 49/06 - Control using electricity
• H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
• H02M 7/44 - Conversion of DC power input into AC power output without possibility of reversal by static converters
• H01R 9/26 - Clip-on terminal blocks for side-by-side rail or strip-mounting

Abstract

The present invention provides an electric compressor comprising: a drive unit which has a motor accommodated therein; a compression unit which is provided at one side of the drive unit and driven by the drive unit to compress a refrigerant introduced therein; and an inverter unit which is provided at the other side of the drive unit and includes an inverter bracket coupled to the drive unit and a control board accommodated in the inverter bracket to control the motor, wherein the control board is divided into a high-voltage portion in which a first element is provided and a low-voltage portion in which a second element having a smaller volume than the first element is provided, and the inverter bracket has a rib formed on the inner wall thereof opposite to the low-voltage portion.

IPC Classes  ?

• F04B 35/04 - Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
• F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
• F04B 49/06 - Control using electricity
• H02K 11/30 - Structural association with control circuits or drive circuits
• H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output

Abstract

The present invention provides a turbo compressor comprising: a first impeller into which air is introduced; a second impeller which is disposed to be spaced apart from the first impeller and discharges air to the outside; and a motor which is disposed between the first and second impellers, drives the first and second impellers, and has a motor passage through which the air introduced into the first impeller passes and is supplied to the second impeller.

IPC Classes  ?

• F04D 17/12 - Multi-stage pumps
• F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
• F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps

Abstract

The present invention provides a stator bobbin of an electric compressor motor, including: an annular rim formed to have a diameter corresponding to the periphery of a yoke of a stator; multiple coil bobbin parts which inwardly extend toward the center of the rim and are radially arranged with reference to the center of the rim; a rib formed at the inward end of each of the coil bobbin parts and disposed on a shoe of the stator; a guide protruding part which is formed to protrude downward on the inner peripheral side of the rim and is in surface contact with a slot of the stator; and holding protrusion parts formed to protrude downward at left and right ends of the rib, respectively. According to the present invention: when an insulating paper is assembled into each slot of a stator core, the insulating paper can be easily inserted in the slot to shorten time required for inserting the insulating paper; the insulating paper inserted in the slot can be stably seated at an accurate position to secure an insulating nature; and a movement, by which the insulating paper is narrowed, is restricted to widen the space of the slot, thereby enabling an easy operation at the time of winding a coil.

IPC Classes  ?

• H02K 3/52 - Fastening salient pole windings or connections thereto
• H02K 1/16 - Stator cores with slots for windings

Abstract

The present invention provides a scroll compressor comprising: a main housing having a suction chamber into which a refrigerant flows, and accommodating a motor and a rotating shaft joined to the motor in the suction chamber; a main frame which is installed on the upper side of the main housing; a fixed scroll which is installed on the upper side of the main frame; a rotating scroll which is installed between the main frame and the fixed scroll, is joined to the rotating shaft, has a back pressure chamber formed between the main frame and the rotating scroll, and has a compression chamber formed between the fixed scroll and the rotating scroll; a cover housing which is installed on the upper side of the fixed scroll and has a discharge chamber for discharging the refrigerant to the outside; and a gasket which is installed between the fixed scroll and the cover housing, wherein the gasket includes an inner bead and an outer bead disposed radially outside the inner bead.

IPC Classes  ?

• F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
• F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
• F04C 29/02 - LubricationLubricant separation
• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Abstract

The present invention provides a method for diagnosing an abnormality in an electric compressor for a vehicle, comprising: a compressor temperature detection step of, when an air conditioner operates, measuring, by using a first temperature sensor, the temperature of a suctioned refrigerant which is suctioned into a compressor body through an evaporator and the temperature of a discharged refrigerant discharged from the compressor body to a condenser, and comparing the measured temperatures; an inverter temperature detection step of, when the temperature of the suctioned refrigerant measured in the compressor temperature detection step is higher than the temperature of the discharged refrigerant, measuring, by using a second temperature sensor, the temperature of an inverter which is positioned inside an inverter case provided on one side of the compressor body; a step in which a microprocessor determines whether the electric compressor is abnormal by comparing the temperature of the inverter measured through the inverter temperature detection step with a preset setting temperature; and a step in which when it is determined that the electric compressor is abnormal, the microprocessor stops the driving of the air conditioner.

IPC Classes  ?

• B60H 1/32 - Cooling devices
• B60H 1/00 - Heating, cooling or ventilating devices

Abstract

The present invention provides an electric compressor having a built-in inverter circuit board, the electric compressor comprising: an inverter receiving space formed at the outer surface of a housing in which a rotor and a rotary shaft are disposed at the center thereof, a stator is disposed outside the rotor while being spaced apart therefrom, and the rotor and the rotary shaft are rotated by electromagnetic induction from the stator; a circuit board bracket coupled inside the inverter receiving space so as to fix an inverter circuit board in the inverter receiving space; the inverter circuit board mounted to the circuit board bracket and electrically connected to the rotor so as to control the rotation of the rotor by means of an inverter; an annular elastic insulation member coming in surface contact with the center portion of the outer surface of the inverter circuit board; and an inverter cover coupled to the inverter receiving space by tightening of a fastening bolt while the inner surface thereof comes in surface contact with the elastic insulation member, so as to seal the inverter receiving space, whereby vibrations generated in the center portions of the inverter cover and the inverter circuit board can be reduced, and thus noise emitted to the outside can be attenuated.

IPC Classes  ?

• F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Abstract

The present invention provides an electric compressor comprising: a main housing in which a motor, a rotating shaft rotated by the motor, and a compression means for suctioning and compressing a refrigerant by being rotated by the rotating shaft are installed; an inverter housing installed below the main housing; and an inverter module seated in the inverter housing and controlling the motor, wherein the inverter module comprises: a cover part comprising a cover plate disposed below the inverter housing, and a cover wall formed along the circumference of the cover plate and arranged to face the inverter housing; a control part disposed above the cover part and seated on the cover plate so as to be arranged inside the cover wall; and a bracket part disposed above the control part so as to fix the control part to the cover part.

IPC Classes  ?

• F04C 23/02 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors
• F16J 15/02 - Sealings between relatively-stationary surfaces
• H05K 7/14 - Mounting supporting structure in casing or on frame or rack

Abstract

A means for controlling back pressure in a scroll compressor according to the present invention relates to a means for controlling back pressure in a scroll compressor, which regulates back pressure applied to an orbiting scroll and a fixed scroll, and comprises: a valve member provided in a space through which a suction chamber communicates with a back pressure chamber to open and close the communicating space; an elastic member that elastically deforms in correspondence to pressure applied to the valve member; and an elastic member support member provided in a space communicating with a discharge chamber to move in correspondence to pressure in the discharge chamber, which varies according to the operating load of the scroll compressor, and have one side supported by the elastic member, wherein a set value is adjusted according to the movement of the elastic member support member, and the back pressure is regulated.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 28/26 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves using bypass channels
• F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids

Abstract

The present invention provides a variable-capacity swashplate-type compressor having an improved connection structure of a lug plate and a swashplate so as to disperse rotational torque, compressive load, and torsional moment, which are applied to the swashplate and the lug plate, and thus a pair of arms of the swashplate, and a center lug arm and left and right lug arms of the lug plate are arranged by engaging with each other, so as to disperse the torsional moment and support the lug plate when the lug plate rotates, thereby reducing the load applied to the respective arms. Therefore, controllability and durability of the swashplate can be improved.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 1/29 - Control of machines or pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
• F04B 1/14 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders

Abstract

The present invention disposes, at a flow path connecting a suction chamber and a crank chamber of a swash plate type compressor, a valve for opening and closing the flow path in response to a change of the inclination angle of a swash plate; and so that the pressure of the crank chamber can be supplied, controls the opening and closing of the valve in response to the case where the inclination angle of the swash plate is the maximum and the case where the inclination angle of the swash plate changes from the maximum angle to a lesser angle, thereby facilitating a change of the inclination angle of the swash plate of the compressor.

IPC Classes  ?

• F04B 39/08 - Actuation of distribution members
• F04B 39/10 - Adaptation or arrangement of distribution members
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention provides a structure of an expansion valve for an air conditioning system of a vehicle, which comprises an evaporator, a compressor, a condenser, and an expansion valve. The structure of the expansion valve for the air conditioning system of a vehicle comprises: a diaphragm which is provided in an upper portion of the expansion valve and is displaced by sensing the temperature of a low pressure refrigerant discharged from an evaporator; a rod member which is provided inside the expansion valve and is moved slidingly up and down inside the expansion valve by the diaphragm; and an antivibration cylinder which suppresses the lateral vibration of the rod member and slows down sensitivity to the vertical motion of the rod member, wherein the inner surface of the antivibration cylinder is in close contact with the outer circumferential surface of the rod member, and the outer surface of the antivibration cylinder is in close contact with a block of the expansion valve. Accordingly, the antivibration cylinder is mounted on the outer circumferential surface of the rod member which operates inside the expansion valve, and the antivibration cylinder is in close contact with the block of the expansion valve to suppress the lateral vibration of the rod member and the noise generated by the vibration, thereby reducing noisy vibrations inside a vehicle and enhancing the comfort of a driver.

IPC Classes  ?

• F25B 41/06 - Flow restrictors, e.g. capillary tubes; Disposition thereof
• F25B 41/04 - Disposition of valves
• B60H 1/32 - Cooling devices

Abstract

The present invention relates to a reed-type discharge valve plate, and more specifically provides a reed-type discharge valve plate comprising: a ring-shaped fixing piece which is provided on a rear housing in a compressor and fixed to the inside of the rear housing, for controlling so that a coolant compressed by a piston in a cylinder bore is selectively discharged; and a plurality of discharge valves which correspond to the rear end of the cylinder bore formed inside of the rear housing, and are arranged radially along the circumference of the fixing piece, wherein the discharge valves comprise elastic support pieces formed extendedly from the fixing piece toward the center point of the ring-shaped fixing piece, elastic reed pieces extendedly formed from a center portion of the support pieces and outwardly formed from the center point of the ring-shaped fixing piece, and valve pieces formed to have a fan shape at the vertical section of the reed pieces, for controlling the discharge of the coolant that is compressed in the cylinder bore, thereby reducing the resistance (elastic restoring force) of the valves that control the discharge of the compressed coolant compared to existing valve plates, and thus preventing loss of cooling capacity while reducing required driving force for the compressor.

IPC Classes  ?

• F04B 39/10 - Adaptation or arrangement of distribution members

Abstract

According to the valve plate assembly, since the second suction port having an area lager than that of the first suction port is formed to gradually extend a suction flow path, a passage rate of the suction refrigerant is prevent from being increased to minimize a decrease in pressure of the suction refrigerant. Particularly, an extending area of the second suction port extends up to a region corresponding to the discharge chamber of a rear housing to maximize an effect of expanding an effective area.

IPC Classes  ?

• F04B 39/10 - Adaptation or arrangement of distribution members
• F04B 53/10 - ValvesArrangement of valves
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention provides a compressor, comprising: a cylinder block having a plurality of cylinders in which a plurality of cylinders are inserted so as to enable reciprocating motion according to the rotation of a rotary shaft; a rear housing which is coupled with at least one end between a front end and a rear end of the cylinder block and includes a protrusion having steps which is inserted into an inner circumference of one side thereof; a disk-shaped valve plate which is disposed between the cylinder block and the rear housing and includes a discharge port and a suction port connected with a discharge chamber and a suction chamber of the rear housing; and a discharge valve which is provided between the valve plate and the rear housing, includes a plurality of lids corresponding to the location of the discharge port provided at the valve plate, and opens or closes the discharge port using the plurality of lids. Thus, the present invention can solve the problem of rust which is generated from the assembling part between the valve plate and the discharge valve by positioning the valve plate and the discharge valve inside of the rear housing without including an additional retainer.

IPC Classes  ?

• F04B 39/10 - Adaptation or arrangement of distribution members
• F04B 27/14 - Control

Abstract

A scroll compressor of the present invention comprises: a main housing having a suction port for sucking a refrigerant from the outside; a driving unit provided inside the main housing for generating rotational power; a scroll compression unit comprising a rotational scroll rotated by a rotational power transmitted through the driving unit and having a spiral rotational wrap, and a fixing scroll coupled with the main housing so as to have a fixed location and including a spiral fixing wrap to be engaged with the spiral rotational wrap; and an outlet housing coupled with the main housing and having an inlet port for receiving the high-pressure refrigerant compressed at the scroll compression unit, and an outlet port for discharging the refrigerant received through the inlet port. The outlet housing comprises: an outlet path spirally formed from an inlet and connected to the outlet port formed on an outer circumference of the outside thereof; a connective path formed along the circumferential direction corresponding to the path direction of the outlet path and connected to the outlet path; and a resonance chamber connected to the outlet path through the connective path, and having an expanded volume in comparison with the volume of the connective path so as to reduce noise and pulsation of the refrigerant discharged from the scroll compression unit.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 29/06 - Silencing

Abstract

The present invention relates to a control valve for a compressor which is coupled with a swash plate arranged at a crank chamber, compresses a refrigerant that has been suctioned into a suction chamber using a plurality of reciprocating pistons, and discharges the compressed refrigerant to a discharge chamber. The control valve for the compressor comprises: a valve body having an internal space; an operating unit which can reciprocate in the internal space of the valve body; a driving unit which is provided in the internal space of the valve body to enable the operating unit to reciprocate according to the current applied from the outside; an air supply flow channel in which a bleed valve chamber is formed therein and which connects the crank chamber with the discharge chamber between inner walls of the valve body; a first bleed flow channel which connects the crank chamber with the suction chamber between the inner walls of the valve body; a second bleed flow channel which is formed along an axial direction through the bleed valve chamber and is connected to the first bleed flow channel; an air supply valve unit which is connected with the operating unit to enable the operating unit to reciprocate, and selectively opens and closes the air supply flow channel and the first bleed flow channel; and a bleed valve unit which is provided in the inside of the air supply valve unit and opens and closes the second bleed flow channel according to the pressure of the suction chamber. Thus, the present invention can stably perform operations by minimizing the influence on the crank pressure.

IPC Classes  ?

• F04B 27/14 - Control
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention pertains to a new reciprocating compressor, wherein unbalanced force due to the rotational motion of the conventional crank arm and connecting rod is resolved, and a piston carries out precise rectilinear motion along the inside wall of a cylinder so as to prevent the abrasion of the wall of the cylinder, preventing the counter-flow and leakage of compressed fluid. To this end, the present invention includes: a housing which has a suction hole formed at one side of an upper portion thereof so as to introduce fluid; an operation cylinder which rotates with respect to the internal center of the housing, and has a guide groove that is continuously formed in the shape of a sine curve in the circumferential direction on the outer periphery thereof and a communication hole that is formed at one side of the upper portion so as to selectively communicate with the suction hole; a fixed pin which is fixed at the housing in surface-contact with the guide groove in the state that the fixing pin is inserted to the inside of the guide groove; a fixed cylinder which shares the internal center of the housing with the operation cylinder inside the operation cylinder and has a through hole facing the suction hole; a piston which is inserted into the inside of the fixed cylinder so as to carry out rectilinear reciprocation and has a piston rod provided at the lower end portion thereof; and a power transmission means which is positioned at the lower end portion of the housing and applies rotational force to the operation cylinder.

IPC Classes  ?

• F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
• F04B 53/14 - Pistons, piston-rods or piston-rod connections
• F04B 53/10 - ValvesArrangement of valves

Abstract

The present invention relates to a coil assembly for a magnetic clutch, and more specifically to a coil assembly for a magnetic clutch in which a magnetic coil made of an existing copper material is replaced with a coil formed by bonding aluminum and copper in order to relatively reduce costs while maintaining the same physical properties. To this end, the invention comprises a magnetic coil which includes an aluminum layer in the center thereof, a copper layer surrounding the outer side of the aluminum layer, and an insulating layer surrounding the outer side of the copper layer.

IPC Classes  ?

• F16D 27/10 - Magnetically-actuated clutchesControl or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings
• F16D 27/112 - Magnetically-actuated clutchesControl or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members with flat friction surfaces, e.g. discs
• F16D 27/14 - Magnetically-actuated clutchesControl or electric circuits therefor Details
• H02K 1/06 - Details of the magnetic circuit characterised by the shape, form or construction

Abstract

The present invention relates to a control valve for a variable capacity compressor, comprising: a valve body having a crank-chamber port; a discharge port; a suction port; a control channel formed in the interior thereof so as to communicate the crank-chamber port and the discharge port with each other; a valve body formed by a first bleeding channel formed so as to communicate the crank-chamber port and the suction port with each other; an operating unit provided within the valve body and which has a second bleeding channel communicated from a center area toward a side surface thereof; and a driving unit provided within the valve body and connected to the operating unit so as to enable the operating unit to reciprocally move according to a current applied by an external source. When the compressor is in a normal state, the control channel opens and the first bleeding channel and the second bleeding channel close so as to enable a refrigerant in a discharge chamber to flow through the control channel and enter the crank chamber. When the compressor is in a bleeding state, the operating unit moves to close the control channel, and the first bleeding channel and the second bleeding channel are communicated with each other and opened, so that the refrigerant in the crank chamber flows through the first bleeding channel and the second bleeding channel and enters a suction chamber, thereby lowering the pressure in the crank chamber. Accordingly, a delay in the operation of the compressor caused by a liquid refrigerant may be prevented, and the operability of the compressor in an initial operating stage may be improved even when the compressor has not been used for a long period of time, thereby improving the performance of the compressor. Further, a non-magnetic material may be easily and firmly fixed so as to enable easy mass production and improved productivity.

IPC Classes  ?

• F04B 27/14 - Control
• F04B 17/04 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
• F04B 45/02 - Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having bellows

Abstract

The invention relates to a swashplate-type compressor, comprising: a housing; a cylinder block which has a plurality of cylinder bores and which is coupled to said housing; pistons which are accommodated in each of said cylinder bores so to be reciprocally movable therein; a suction port formed in said housing; a suction chamber formed in said housing so as to interconnect said suction port and the cylinder bores; and a muffler cap installed in said suction chamber. A muffler is formed by installing the muffler cap in the suction chamber, such that the pulsation of a suctioned refrigerant is minimized, thereby reducing noise and vibration.

IPC Classes  ?

• F04B 53/00 - Component parts, details or accessories not provided for in, or of interest apart from, groups or
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

A valve plate assembly of a compressor of the present invention comprises: a valve plate in which a suction port is formed; and a suction reed which opens and closes the suction port. The suction port comprises a first suction port at an inlet and a second first suction port at an outlet, wherein the area of the second first suction port is wider than that of the first suction port. Accordingly, the suction port consisting of the first and second suction ports has a wide area thereof, thereby preventing the flow rate of sucked refrigerants from increasing and minimizing the drop of pressure of the sucked refrigerants.

IPC Classes  ?

• F04B 39/10 - Adaptation or arrangement of distribution members
• F04B 53/10 - ValvesArrangement of valves
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention relates to a swash plate-type compressor that has improved connection structures between a driving shaft and a swash plate and between the swash plate and a piston, so as to reciprocate the piston back and forth without rotating the swash plate about the driving shaft. The swash plate-type compressor includes: a housing (100); a cylinder block (200) having a plurality of cylinder bores (201); a plurality of pistons (300) that reciprocate within the cylinder bores (201), respectively; a driving shaft (400) rotatably installed on the cylinder block (200); and a swash plate (500) installed on the piston (300) to interact with the piston (300). The swash plate-type compressor comprises an inclination angle varying means (600) that is disposed between the driving shaft (400) and the swash plate (500) to support the swash plate (500), and that is configured such that when the driving shaft (400) rotates, the swash plate (500) does not rotate but moves back and forth with an inclination angle retained. Accordingly, a shoe for connecting the swash plate and the piston to each other can be removed, thus fundamentally preventing mechanical loss such as the wear and degradation of a compressor due to friction generated on a contact surface between a shoe and a swash plate.

IPC Classes  ?

• F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention relates to an electromotive terminal device. The electromotive terminal device inserted into a seating part of a compressor casing in which an electromotive part is installed in an inner space thereof includes: a hermetic terminal in which a plurality of terminal pins for transmitting external power into the electromotive part are arranged spaced apart from each other in the length direction thereof; and a connector having a plurality of terminal grooves electrically connected so as to correspond to the terminal pins of the hermetic terminal. A coupling groove is formed in the inner surface of the seating part of the compressor casing. The electromotive terminal device further includes a pair of snap rings, each having a circular ring shape with an opened structure at both ends thereof which are bent inward to face each other, wherein the pair of snap rings hook both ends of the hermetic terminal in a state where the snap rings are inserted into the coupling groove to face each other so as to fix the hermetic terminal to the seating part of the casing. As described above, in the terminal device for an electromotive compressor, the coupling groove is formed in the inner surface of the seating part of the compressor casing, and the hermetic terminal is hooked and fixed through the snap rings inserted into the coupling groove in the state where the hermetic terminal is inserted into the seating part. Thus, the hermetic terminal may be easily fixed to the casing.

IPC Classes  ?

• F04B 39/12 - CasingsCylindersCylinder headsFluid connections
• H01R 13/62 - Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement

Abstract

The present invention provides an electromotive compressor for a vehicle which includes a housing and an inverter coupled to an outer surface of the housing, wherein the housing is provided with an intake port through which a refrigerant is introduced, and a discharge port through which the introduced refrigerant is pressed and discharged. The housing includes: a compressing part for pressing the refrigerant; a main housing having a cylindrical space for accommodating a driving motor configured to drive the compressing part; and an inverter housing coupled to the main housing and disposed in an area projected in a radial direction of a virtual tangent plane which makes contact with an outer circumference of the cylindrical space. The inverter includes a printed circuit board with electronic components mounted, wherein the printed circuit board is mounted in the inverter housing, and a first component of some of the electronic components is disposed in an area projected onto the rear in an axial direction of the cylindrical space. Therefore, an object of the present invention is to provide an electromotive compressor for a vehicle capable of sufficiently cooling down the inverter and the electronic components through the improvement of the cooling efficiency of the inverter by positioning some of the electronic components of the inverter in the housing and also positioning the electronic components in the vicinity of the refrigerant.

IPC Classes  ?

• F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
• F04C 29/04 - HeatingCoolingHeat insulation
• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04B 39/12 - CasingsCylindersCylinder headsFluid connections

Abstract

The present invention relates to the plate assembly of a compressor valve interposed between a cylinder block and housing, and comprising a valve plate at which an intake port is disposed, an intake reed at which a plurality of guide projections are disposed to open or close the intake port, a first guiding groove disposed at the cylinder block corresponding to the guide projection, and a front gasket interposed between the cylinder block and the intake reed. According to the present invention, compressor noise caused by self-excited vibration of the intake reed is prevented since the natural frequency of the intake reed is lowered by narrowing or removing the neck connecting the intake reed with the valve seat.

IPC Classes  ?

• F04B 39/10 - Adaptation or arrangement of distribution members
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 53/10 - ValvesArrangement of valves

Abstract

A valve plate assembly of a compressor of the present invention comprises a valve plate and a valve sheet. The valve plate assembly of the compressor comprises: suction ports which are formed on said valve plate; and leads which are connected by neck portions in order to open and close said suction ports, and are positioned on said valve sheet, wherein there are two or more said suction ports; and said leads are formed to cover the two or more suction ports. Thus, since a plurality of suction ports and the neck portions of the leads are formed, the cross-sectional area of the suction ports is increased to obtain a refrigerant intake and at the same time, to improve durability of the leads.

IPC Classes  ?

• F04B 39/10 - Adaptation or arrangement of distribution members
• F04B 53/10 - ValvesArrangement of valves
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

According to one embodiment of the present invention, a capacity control valve for a variable capacity compressor comprises: a valve housing in which a crank chamber connection hole and a discharge chamber connection hole for receiving crank chamber pressure and discharge chamber pressure of the compressor, respectively, are formed, and in which a guide hole crossing the discharge chamber connection hole and the crank chamber connection hole penetrates through the valve housing, wherein a valve seat is formed at the entrance of the guide hole; a valve body which reciprocates so as to open/close the guide hole; and an electronic solenoid provided with an operating iron core for enabling the valve body to reciprocate when supplied with electricity (PWM control), wherein the electronic solenoid has a plunger chamber in which the operating iron core is installed, and the gap formed between the plunger chamber and the operating iron core is filled with fluid. Thus, the plunger chamber is filled with oil to suppress vibrations, caused by the movement of the operating iron core, from being transmitted to the valve body, or decrease such a transmission, thereby reducing vibrations and noise caused by the contact between the valve body and the valve seat.

IPC Classes  ?

• F04B 27/14 - Control
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

According to the present invention, the swash plate type compressor comprises: front and rear housings, front and rear cylinder blocks formed with a plurality of cylinder bores and coupled with the front and rear housings; a driving shaft mounted to be rotatable with respect to the front and rear housings; a swash plate mounted to be rotated by the driving shaft; and a rotary valve provided to the driving shaft so as to be mounted to the inner surfaces of coupling holes which are formed in the front and rear housings, wherein a refrigerant, which is introduced into the suction port of the rear housing, is sucked into the cylinder bores of the front and rear housings by a main path and an auxiliary path. Accordingly, the refrigerant is sucked into the suction chambers, which are respectively formed in the front and rear housings, via the main path and the auxiliary path in a balanced way, thereby resolving the unbalance of the amount of refrigerant, which is respectively sucked into the cylinder bore of the front cylinder block and the cylinder bore of the rear cylinder block.

IPC Classes  ?

• F04B 39/12 - CasingsCylindersCylinder headsFluid connections
• F04B 53/16 - CasingsCylindersCylinder liners or headsFluid connections
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

Provided is an inverter for a motor compressor connected to a parallel power source, comprising: a first voltage conversion unit for receiving a voltage output from a first parallel power source and down-converting the same to a first voltage; a second voltage conversion unit for receiving a voltage output from a second parallel power source, which outputs a higher voltage than the first parallel power source and is connected in parallel with the first parallel power source, and for down-converting the same to a second voltage; a switch acting to pass or block the first voltage output from the first voltage conversion unit; and a comparator for feeding back, to the switch, a turn-off signal and transmitting the second voltage to a microprocessor power source if the first voltage and the second voltage are respectively input to a non-inverting terminal and an inverting terminal. Also provided is a method for driving the inverter. The present invention is devised in such a way that a microprocessor for controlling a motor compressor inverter can be driven with just the application of a low voltage, and, when a high voltage is applied, the low voltage is blocked and the high voltage is used to drive the microprocessor such that the drive power sources of the inverter of the motor compressor can be used selectively.

IPC Classes  ?

• B60L 1/00 - Supplying electric power to auxiliary equipment of electrically-propelled vehicles
• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
• B60L 11/18 - using power supplied from primary cells, secondary cells, or fuel cells

Abstract

The present invention relates to a stator for an electromotive compressor, which is arranged into a circular form within a housing to/from which refrigerant is introduced/discharged. The stator comprises: a plurality of bobbins, each of which having an outer surface wound with a coil, and which is arranged and coupled with each other into a circular form; first terminals, each of which includes a first terminal portion coupled onto each bobbin such that the first terminal portion is protruded, and a first fixing portion which is electrically connected to the first terminal portion, and which fixes a first end of the coil onto the bobbin, and which is electrically connected to the first end of the coil; and second terminals, each of which includes a second terminal portion coupled onto each bobbin such that the second terminal portion is protruded, and a second fixing portion which is electrically connected to the second terminal portion, and which fixes a second end of the coil onto the bobbin, and which is electrically connected to the second end of the coil. According to the present invention, bobbins wound with respective coils have first terminals and second terminals to thereby enable coil alignment to be conveniently carried out, and enable both ends of the coil to be easily fixed and bonded, thus enabling a complicated and difficult stator coil connection to be performed in a simple and convenient manner, reducing the time taken for the stator coil connection, and improving workability and productivity.

IPC Classes  ?

• H02K 3/46 - Fastening of windings on the stator or rotor structure
• H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto

Abstract

The present invention comprises: a housing having a refrigerant suction port through which a refrigerant is sucked, and a refrigerant discharge port for discharging the sucked refrigerant that has been compressed; a stator disposed in a ring-shape inside the housing; and a rotor that is disposed at the inner side of the stator and rotates. The stator comprises shoes having one side surfaces facing the rotor, teeth that are integrally extended from the other side surfaces of the shoes in a radial direction and on which coils are wound, and head portions having inner circumferential surfaces integrally formed on the outside of the teeth and outer circumferential surfaces facing the inner surface of the housing. The angle between the other side surface of each of the shoes and the side surface of each of the teeth can be formed into an obtuse angle in order to reduce the rapidly forming magnetic flux density near the magnetic pole conversion region of the rotor. Therefore, forming the stator into an optimal shape for reducing the rapidly forming magnetic flux density near the magnetic pole conversion region of the rotor reduces cogging torque and torque ripple, and further reduces noise and vibration thereof. Additionally, setting the optimal condition for the interval between the slots, which is the main variable in the shape of an electromotive force, not only enhances the efficiency of the motor, but also achieves smoother operation thereof and reduces the noise and vibration of same.

IPC Classes  ?

• H02K 1/16 - Stator cores with slots for windings
• H02K 1/27 - Rotor cores with permanent magnets
• F04B 35/04 - Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric

Abstract

The present invention relates to an electrically driven scroll compressor. The electrically driven scroll compressor includes a housing into and from which a refrigerant is introduced and discharged, a driving part disposed within the housing to generate a rotation force of a driving shaft, an orbiting scroll rotated by the driving part, a scroll compression part including a fixed scroll to compress the refrigerant, wherein the fixed scroll and the orbiting scroll define a compression space therebetween, and a sliding bush disposed between the driving shaft and the orbiting scroll to eccentrically rotate with respect to the rotation of the driving shaft, the sliding bush transmitting the rotation force of the driving shaft to the orbiting scroll. An oil flow passage, through which oil flows, is defined in the housing for lubrication. Also, an inclined portion is disposed on an end in a rotation direction of the sliding bush. The inclined portion is disposed on the oil flow passage. Since a portion of the flowing oil or the entirety of the oil compresses the inclined portion, a moment is applied in a direction opposite that of a moment resulting from the eccentricity of the sliding bush. Thus, according to the present invention, tilting can be reduced to prevent the partial abrasion of the sliding bush and of a sliding bearing, thereby improving the lifespan of the compressor. In addition, the electrically driven scroll compressor can be stably operated, and resistance against oil can be reduced to reduce power consumption.

IPC Classes  ?

• F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 2/02 - Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 29/02 - LubricationLubricant separation

Abstract

According to the present invention, a power transmission apparatus for a compressor comprises: an outer hub which is connected to a pulley, and which has a central hole formed therethrough; an inner hub spaced apart from the central hole of the outer hub and connected to a driving shaft of the compressor; and a limiter which interconnects the outer hub and the inner hub, and which has a fracture part. When axial force is applied to the limiter in the lengthwise direction of the driving shaft and a torque exceeds a preset level with the operation of the compressor disabled, the fracture part is destructed to cut off the transmission of power. The power transmission apparatus of the present invention is advantageous in that a load is applied to the limiter in the direction of the driving shaft, and thus the fatigue strength of the power transmission apparatus of the present invention is superior to those of conventional structures in that a fatigue load is applied to limiters in the rotating direction of the driving shaft by means of a frequent variation of torque, and shearing force caused by rotation is mainly applied.

IPC Classes  ?

• F16H 55/36 - Pulleys
• F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
• F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
• F04B 35/00 - Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for

Abstract

The present invention provides an expansion valve for a vehicle air-conditioning unit, which throttles a refrigerant introduced from a condenser in order to supply the throttled refrigerant to an evaporator, and which controls an aperture by means of a refrigerant introduced from the evaporator and discharged into a compressor. The expansion valve for a car air-conditioning unit comprises: a valve main body which includes first to fourth ports, a throttle channel throttling a refrigerant introduced through the first port and discharged into the second port, a first internal channel in communication with the throttle channel and with the first port to allow a refrigerant introduced through the first port to be discharged into the throttle channel, a second internal channel in communication with the third and the fourth ports to allow a refrigerant introduced through the third port to be discharged into the fourth port, and a through hole formed vertically to pass through the first and second internal channels; a valve part which includes a needle inserted into the through hole to be movable in a vertical direction and a sleeve coupled to one end of the needle to adjust an aperture of the throttle channel according to the movement of the needle; a driving part coupled to the valve main body to vertically move the needle by a refrigerant introduced through the third port; and an elastic member to which the needle is inserted and coupled to allow the needle to be inclined vertically. Accordingly, unstable vibrations of the needle are prevented, thus enabling the expansion valve to stably operate.

IPC Classes  ?

• B60H 1/32 - Cooling devices
• F25B 41/04 - Disposition of valves
• F25B 41/06 - Flow restrictors, e.g. capillary tubes; Disposition thereof
• B60H 1/00 - Heating, cooling or ventilating devices

Abstract

The variable-displacement swash plate compressor of the present invention comprises: a housing; a cylinder block having a plurality of cylinder bores; a drive shaft which is rotatably supported on the cylinder block; a lug plate which is fixedly provided on the drive shaft; a swash plate provided such that its angle of inclination can be varied while it performs a rotational motion due to the lug plate; pistons which are accommodated in such a way that they can perform a reciprocating movement inside the cylinder bores due to the rotation of the swash plate; a return spring which is provided on the drive shaft at the rear surface of the swash plate; a tapered ring which is provided on the drive shaft between the swash plate and the return spring; and a stepped part which spaces the swash plate from the tapered ring, and prevents twisting of the tapered ring due to the swash plate.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups

Abstract

Provided is an expansion valve for a vehicle air conditioning device in which a coolant flowing in from a condenser is throttled and supplied to an evaporator, and the degree of opening is controlled by means of the coolant flowing in from the evaporator and flowing out to a compressor, wherein the expansion valve comprises a main valve body formed with: a throttling flow pathway which has a first port for the inflow of the coolant from the condenser and a second port formed in a first side surface in order to supply the throttled coolant to the evaporator in the bottom surface, and on the inside of which the coolant that has flowed in to the first port is throttled; and an internal flow pathway which is formed in line with the throttling flow pathway and connects through to the first port such that the coolant that has flowed in to the first port flows out to the throttling flow pathway. Consequently, it is easy to process the main valve body, and hence production is straightforward and costs can be reduced.

IPC Classes  ?

• B60H 1/32 - Cooling devices
• F25B 41/04 - Disposition of valves
• B60H 1/00 - Heating, cooling or ventilating devices

Abstract

The present invention relates to an inverter cooling structure for an electric compressor of a vehicle, in which a refrigerant flowing in from a suction port coupled to a housing is compressed and discharged through a discharge port, and is also controlled by an inverter coupled to an outer surface of the housing. A cooling passage, through which the inflowing refrigerant flows, and an oil passage, through which lubricating oil flows, are each defined in the housing. The inverter is disposed at a position corresponding to that of the cooling passage or of the oil passage. Thus, the inverter is cooled by exchanging heat with the refrigerant or oil. Since oil which has a density and specific heat greater than those of the refrigerant is used, the oil is advantageous for cooling. Thus, the inverter cooling efficiency may be further improved. In addition, since the cooling passage, through which the inflowing refrigerant flows, is defined so as to pass through a position corresponding to that of an IPM heat sink of the inverter, the cooling efficiency of the IPM heat sink and of the inverter may be improved.

IPC Classes  ?

• F01P 3/12 - Arrangements for cooling other engine or machine parts
• H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
• F04D 29/58 - CoolingHeatingDiminishing heat transfer

Abstract

The present invention relates to an air conditioner for a vehicle. The air conditioner comprises: an evaporator; a variable capacity swashplate-type compressor that uses a plurality of reciprocating pistons coupled to a swashplate in a crankcase to compress refrigerant that has been suctioned into an intake chamber from the evaporator and then discharged to a discharge chamber; a condenser for the condensing refrigerant that enters from the discharge chamber; and a control valve installed on the compressor so as to control the pressure of the crankcase by controlling the flow of control refrigerant suctioned through a high pressure port from the discharge chamber, and discharging the control refrigerant through a medium pressure port to the crankcase, controlling the operating flow of the compressor by changing the inclined angle of the swashplate, and throttling the refrigerant that flows in from the condenser through an inlet port, followed by discharging the evaporated vapor through a discharge port. Accordingly, as the control valve can control the throttling of condensed refrigerant in addition to controlling the flow of a variable capacity compressor, there is no need for a separate expansion valve for throttling condensed refrigerant.

IPC Classes  ?

• B60H 1/32 - Cooling devices
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention relates to a reciprocating compressor, comprising: a housing; front and rear cylinder blocks, in which a plurality of cylinder bores are formed and which are coupled to the housing; pistons accommodated in the respective cylinder bores such that the pistons are reciprocatingly movable; suction ports formed at least on one side of both the front and rear cylinder block; suction mufflers which are connected to the suction ports, and formed at least on one side of both the front and rear cylinder block; and first suction passages for interconnecting the suction mufflers and swash plate chambers formed in the front and rear cylinder blocks. Thus, pulsation caused by a refrigerant being sucked and discharged can be suppressed as much as possible using the suction mufflers and discharge mufflers arranged at the front and rear cylinder blocks, as well as the first and second suction passages, thereby reducing noise and vibration.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 49/00 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups

Abstract

A reciprocating compressor of the present invention includes a housing, a cylinder block formed with a plurality of cylinder bores and coupled with the housing, and pistons respectively received in the cylinder bores to be able to reciprocate. The reciprocating compressor comprises: a suction path; a suction flange for reducing the pulsation of a predetermined frequency of refrigerant which passes through the suction path; and a first connection path connecting the suction path to the suction flange. Therefore, it is possible to restrain most of the pulsation of a predetermined frequency of refrigerant, which passes through a suction muffler, by means of the suction flange that is connected to the suction muffler via the first connection path, thereby reducing noise and vibration.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 53/00 - Component parts, details or accessories not provided for in, or of interest apart from, groups or
• F04B 39/16 - FiltrationMoisture separation

Abstract

The present invention relates to a variable capacity compressor. The variable capacity compressor, comprises: an intake seal, a crank seal and a discharge seal; a discharge outlet connected to said discharge seal and mounted to a discharge passage; and a check valve which opens and closes the discharge passage based on the pressure differentials in the intake seal, crank seal and discharge seal. Accordingly, the differential, between the check valve inlet and outlet pressures and the discharge pressure at the exit, are minimized by allowing the pressures of intake and crank seals to act upon the far-side of the valve body such that the pressure in the direction opposite to the discharge seal, is reduced.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 27/14 - Control
• F16K 31/00 - Operating meansReleasing devices

Abstract

Disclosed is a displacement control valve for a variable displacement compressor. The displacement control valve comprises: a valve housing having a crank chamber connection hole, a discharge chamber connection hole and a suction chamber connection hole formed therein, which respectively receive the pressure from the compressor crank chamber, discharge chamber, and suction chamber, and further having a first guide hole penetratingly formed therein, which is positioned between the discharge chamber connection hole and the crank chamber connection hole; a valve body which, whilst moving reciprocally, opens and closes the opening of the first guide hole; and an electronic solenoid which causes the reciprocal movement of the valve by applying electric current; a sleeve which connects the electronic solenoid and the valve body; and an air extraction valve which controls the connection between the crank chamber and the suction chamber by movement of the sleeve. Thus, when the pressure in the compressor crank chamber increases rapidly, the pressure can be quickly released via the suction chamber due to the air extraction valve.

IPC Classes  ?

• F04B 27/14 - Control
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

According to a first embodiment of the present invention, a method for manufacturing a vacuum bellows assembly comprises the steps of: (I) assembling a guide, pin, spring, and stopper to bellows; (II) welding the bellows and the stopper; and (III) inserting the welded bellows in a vacuum chamber, and then press-fitting the pin into a through-hole formed in the stopper so as to maintain the inside of the bellows in a vacuum state, wherein the pin is press-fitted in the through-hole from within the bellows. Thus, by maintaining the inside of bellows in a vacuum state through a simple process such as press-fitting a pin or electron beam welding, workability and yield can be improved.

IPC Classes  ?

• F04B 27/14 - Control
• F04B 39/10 - Adaptation or arrangement of distribution members
• F04B 43/08 - Machines, pumps, or pumping installations having flexible working members having tubular flexible members

Abstract

A displacement control valve of a variable displacement compressor according to the present invention comprises: a valve housing having a crank chamber connection hole and a discharge chamber connection hole respectively formed inside to be applied with crank chamber pressure and discharge chamber pressure of the compressor, and a first guide hole crossing the discharge chamber connection hole and the crank chamber connection hole by penetrating the same; a valve body for opening and closing the inlet of the first guide hole by reciprocation; a solenoid having a movable iron core making the valve body reciprocate, an electronic coil disposed at the periphery of the movable iron core, a solenoid housing surrounding the electronic coil, and a fixed iron core disposed in the electronic coil; and a sleeve for compensating the force generated by the flow of fluid from the discharge chamber connection hole to the crank chamber connection hole and applied towards the discharge chamber connection hole. Therefore, the discharge chamber pressure applied to the valve body is compensated by the sleeve so that control precision is improved.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 27/14 - Control

Abstract

The present invention relates to an electromagnetic clutch for a compressor, comprising: a drive rotor which is connected linked in movement with a drive source and incorporates a coil; an armature which is disposed at one side surface of the drive rotor with a space in between, and which is attracted to the drive rotor and to which is transmitted the rotational force of the drive rotor by means of an electromagnetic force generated from the coil; a hub which is linked, via a drive shaft, to a driven source; and a leaf spring member which is linked to the armature and hub; wherein the leaf spring member is constituted as a single leaf spring consisting of a central part and a plurality of arm parts extending integrally from the central part, and wherein the leaf spring member comprises: a plurality of first arm parts which are fastened via rivets to the armature; and a plurality of second arm parts which are disposed between neighbouring first arm parts and extend as far as the vicinity of the end of the armature, and also wherein resilient members are interposed between the second arm parts and the central part adjacent to the second arm parts and the armature. When the electromagnetic clutch for a compressor according to the present invention is employed, an auxiliary rib is made to project from the resilient member, the thickness of the resilient member is formed so as to differ in the length direction, and an auxiliary resilient part is also provided so as to make side surface contact against the armature and resilient member, thereby producing the advantageous effect that it is possible to further reduce the noise and vibration which occur as the armature and the leaf spring member engage and separate from each other when the clutch is turned on and off.

IPC Classes  ?

• F16D 27/112 - Magnetically-actuated clutchesControl or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members with flat friction surfaces, e.g. discs
• F16D 27/10 - Magnetically-actuated clutchesControl or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings

Abstract

The present invention relates to a reciprocating compressor, comprising: a front housing and a rear housing; a cylinder block which is interposed between the front housing and the rear housing, and which has a plurality of cylinder bores; a piston accommodated in the cylinder bores such that the piston reciprocates; a driving shaft which rotates relative to the front housing; piston-driving means interconnected between the piston and the driving shaft; a valve plate opposite the bottom of the piston and having an inlet port and an outlet port; and a suction chamber and a discharge chamber formed in the rear housing. The rear housing includes: an outer rear housing having an inlet port for the introduction of a refrigerant from the outside; and an inner rear housing which is interposed between the outer rear housing and the cylinder block, wherein the suction chamber is formed between the outer rear housing and the inner rear housing, and the discharge chamber is formed between the cylinder block and the inner rear housing. The reciprocating compressor according to the present invention divides the rear housing into the outer rear housing and the inner rear housing to form the suction chamber between the outer rear housing and the inner rear housing, and thus enabling the uniform introduction of the refrigerant into the plurality of cylinder bores.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups

Abstract

A check valve of the present invention comprises: a main body having a hollow shape, and having an inlet through which a refrigerant mixed with oil is introduced, an outlet and a drain hole which define a communication channel that connects the inlet and the outlet; a valve body, moving within the main body and controlling refrigerant flow from the inlet to the outlet; a cap for covering an open portion of the main body; and a press means for pressing the valve body in the direction for blocking the refrigerant flow, wherein the valve body presses oil-free refrigerant in the communication channel to enable the refrigerant to flow from the inlet to the outlet. Accordingly, advantages include natural separation and discharge of the oil contained in the refrigerant by the chin portion of the refrigerant inlet, thereby maximizing the oil separation performance, and reverse flow of the refrigerant is prevented by the valve body. Moreover, the combination of the oil separation function and the check valve functions capable of preventing the reverse flow of the refrigerant facilitates creating more interior space within a compressor, thereby improving the design and assembly processes.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 39/10 - Adaptation or arrangement of distribution members

Abstract

A method for controlling an electric compressor according to the present invention comprises the steps of: (I) starting a compressor by applying a power source to an air conditioner; (II) determining whether the compressor is starting normally; and (III) driving the compressor normally if the compressor is starting normally at step (II), or otherwise restarting the compressor if the compressor is not starting normally and then determining again whether the compressor is starting normally. Therefore, at an early stage of starting the compressor, abnormal operations (breakdown, disconnection, overheating and the like) of the compressor are determined by an inverter to determine restart or operation failure of the compressor, thereby improving the reliability of the electric compressor.

IPC Classes  ?

• F24F 11/02 - Arrangement or mounting of control or safety devices
• G01R 31/34 - Testing dynamo-electric machines
• F24F 11/00 - Control or safety arrangements

Abstract

A capacity control valve of a variable capacity compressor of the present invention comprises: a valve housing including a crank chamber connection hole, a discharge chamber connection hole and a suction chamber connection hole formed inside, which receive the pressure of a crank chamber, the pressure of a discharge chamber and the pressure of a suction chamber of the compressor, respectively, and a first guide opening passing through the discharge chamber connection hole and the crank chamber connection hole; a valve body for opening and closing an entrance of the first guide opening while reciprocating; an electronic solenoid for reciprocating the valve body by an electric current applied thereto; and a sleeve configured by a cage connected to the electronic solenoid and a needle that is separately connected for the connection between the valve body and the cage, wherein the needle maintains a concentric relation with the cage and serves to prevent tilting. As the sleeve, which is adapted to have the cage and the needle separately, maintains the concentric relation and is configured to prevent tilting, the operability of the control valve and the assembly process can be improved.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 27/14 - Control

Abstract

A capacity-variable compressor of the present invention, including a cylinder block with plural cylinder bores, a drive shaft arranged to rotate with respect to the cylinder block, a piston arranged inside the cylinder bore to reciprocate, a swash plate mounted around the drive shaft and connected to the piston, a housing having a suction chamber, a discharge chamber and a crank chamber and a capacity control valve for regulating a tilt angle of the swash plate to adjust a discharge capacity, comprises: an air bleed line for connecting the suction chamber and the crank chamber; a communication line for additionally connecting the suction chamber; and the crank chamber and a pressure-operated valve installed on the communication line, wherein the pressure-operated valve opens the communication line when the conditions for generating a liquid phase of refrigerant of the crank chamber are satisfied during the start-up of the compressor. Accordingly, by the communication line for connecting the crank chamber and the suction chamber and the pressure-operated valve installed on the communication line, the liquid phase refrigerant of the crank chamber is discharged into the suction chamber via the communication line during the initial start-up of the compressor to thus prevent an operation delay of the compressor.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 27/14 - Control

Abstract

The present invention relates to a displacement control valve of a variable displacement compressor. The displacement control valve of a variable displacement compressor according to the present invention comprises: a valve housing having a crank chamber connection hole, a discharge chamber connection hole and a suction chamber connection hole respectively receiving a crank chamber pressure, a discharge chamber pressure and a suction chamber pressure of the compressor formed inside, and a 1st guide hole passing across the discharge chamber connection hole and the crank chamber connection hole; a valve body composed of a large diameter portion and a small diameter portion to open or close the entrance to the 1st guide hole, while making a reciprocating movement; an electromagnetic solenoid for reciprocably moving the valve body with electricity; and a sleeve member having a sleeve with a larger diameter than the small diameter portion, the sleeve member connecting between the small diameter portion of the valve body and the electromagnetic solenoid. Accordingly, as the amount of opening of the valve body is restricted by the sleeve member, a suction pressure (Ps) is maintained at a constant value, independent of an increasing discharge pressure (Pd), and thus control precision is improved.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 27/14 - Control

Abstract

The present invention relates to an electric compressor with an inverter, in which the inverter for variably regulating the rotating speed of a compressor driving motor is installed in an inverter housing mounted on a compressor housing, wherein said inverter comprises: an upper main board for supplying power to the driving motor; a lower bus bar assembly including a bus bar electrically connected to the main board, and an insulator covering the bus bar; a low power element mounted on the main body; and a high power element which is mounted on the insulator and connected to the bus bar, and which consumes power at a relatively higher rate than the low power element. The electric compressor with the inverter according to the present invention is provided with the bus bar assembly arranged separately from the main board, to thereby integrate the bus bar for applying power to the high power element and reduce the size of the main board as compared to conventional main boards, so as to obtain a compressor with further compact outer dimensions.

IPC Classes  ?

• F04B 49/00 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups
• F04B 53/00 - Component parts, details or accessories not provided for in, or of interest apart from, groups or
• F25D 19/00 - Arrangement or mounting of refrigeration units with respect to devices

Abstract

A swash plate compressor of the present invention comprises: a housing, a cylinder block which has cylinder bores and is coupled to the housing, pistons which are installed in the respective cylinder bores and able to reciprocate, a drive shaft which is installed to rotate relative to the housing and the cylinder block, and a swash plate which is installed to interlock with the pistons and rotated by the drive shaft. The swash plate compressor also includes a primary support member which is coupled between one side of a swash plate boss and the cylinder block and elastically supports the swash plate, and a secondary support member which is coupled between the other side of the swash plate boss and the cylinder block and rigidly supports the swash plate. Therefore, unstable vibration of the swash plate is effectively restrained by a thrust bearing and a thrust washer and noise is reduced.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention relates to a variable displacement swash plate type compressor capable of providing a simplified and light weight assembly structure of a swash plate and a rug plate. A variable displacement swash plate type compressor, having a cylinder block with plural cylinder bores, a drive shaft rotatably supported in the cylinder block, a rug plate fixedly mounted on the drive shaft, a swash plate arranged to have a variable tilt angle during rotation by the rug plate, and a piston arranged inside the cylinder bore to reciprocate by rotation of the swash plate, comprises: a protruded portion projected towards the swash plate from the rear surface of the rug plate, the protruded portion being formed at only one side; an inclined plane formed at the other side of the rear surface of the rug plate; an arm formed at the swash plate and projected towards the rug plate; and a moving roller that rolls along the inclined plane while the roller is being rotatably attached to the arm, wherein the protruded portion of the rug plate comes into direct contact with one side of the arm to transmit rotating power. Therefore, the facilitated manufacturing process reduces manufacturing costs of such a compressor, and the compressor's reduced weight can improve fuel economy of automobiles even more.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

A swash plate compressor of the present invention includes: a housing; a cylinder block including a plurality of cylinder bores; a piston that is accepted and reciprocates in the cylinder bore respectively; a drive shaft that is inserted in a coupling hole formed on the cylinder block and is installed to be rotatable; a swash plate that is placed in a swash plate chamber between the housing and the cylinder block and is coupled to the drive shaft at an oblique angle; a rotary valve that is formed on on a portion of the drive shaft with the coupling hole and is formed with a coolant outlet hole passing through along the circumferential direction; and a connection hole that allows connection with the cylinder bore by being formed on the cylinder block and connects with the coolant outlet hole periodically as the rotary valve rotates, wherein the piston includes a flow passage connecting the connection hole with the swash plate chamber. The swash plate compressor of the present invention enables quick inflow of the coolant into the cylinder bore during the intake stroke of the piston, by forming the flow passage on the piston that enables the piston to connect with an intake passage and the swash plate chamber to prevent the coolant from remaining in the intake passage after completing the compression stroke.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

A swash plate compressor of the present invention includes: a housing; a cylinder block that has a plurality of cylinder bores and is coupled to the housing; a piston that is accepted and reciprocates in the cylinder bores respectively; a drive shaft that is installed to be rotatable with respect to the housing and the cylinder block; a swash plate that is rotated by the drive shaft and connected to the piston; a valve plate that is placed between the housing and the cylinder block; and a rotary valve that rotates with the drive shaft and is installed and allows the rotation thereof on the inner plane of a coupling hole formed in the cylinder block. The swash plate compressor of the present invention further comprises: a coolant suction hole formed on the cylinder block to communicate with a swash plate chamber and a coolant storage chamber of the housing; a coolant inflow hole formed on the drive shaft and communicating with the coolant storage chamber; a coolant outflow hole formed on the rotary valve and communicating with the coolant inflow hole; and a communication hole formed on an inner peripheral of the coupling hole that contacts the coolant outflow hole and communicates with the cylinder bores. As the coolant inflow hole through which coolant in the swash plate flows in is formed together inside the coupling hole of the cylinder block, the coolant can flow in stably regardless of torque of the drive shaft that rotates at high speed. As a result, the present invention has an advantage of reducing loss caused by the coolant inflow resistance.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention relates to a swash plate compressor with a rotary valve which can effectively siphon a coolant into a swash plate chamber through a cylinder block. The swash plate compressor comprises a housing connected to the cylinder block which has a plurality of cylinder bores, pistons which are accommodated and reciprocate in the respective cylinder bores, a drive shaft which is installed to rotate with respect to the housing and the cylinder block, a swash plate which is installed to be rotated by the drive shaft and interlock with the pistons, a valve plate which is interposed between the housing and the cylinder block, and the rotary valve which is formed to rotate along with the drive shaft and installed to roll in a joint hole formed in the cylinder block. A coolant outlet is formed on the exterior of the rotary valve, connection holes connected to the respective cylinder bores are formed on the interior of the joint hole which abuts against the exterior of the rotary valve, and a coolant inlet groove is formed to penetrate the swash plate chamber through to the housing. Therefore, loss caused by coolant inlet resistance can be remarkably reduced by siphoning coolant regardless of the torque of the drive shaft rotating at high speed.

IPC Classes  ?

• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention relates to a displacement control valve for a variable displacement compressor, comprising a valve housing having a discharge chamber connection space and a crank chamber connection space, an electronic solenoid, and a valve body which reciprocates in the valve housing via the electronic solenoid. The valve body reciprocates from the discharge chamber connection space toward the crank chamber connection space to open/shut the gap between the two spaces, thus increasing the cross-section area of the valve body and improving productivity.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention relates to a swash plate‑type variable displacement compressor and comprises a housing, a drive shaft that is installed inside said housing to enable rotation, a swash plate that is installed inside said housing so as to undergo rotational movement while varying the slope angle, a lug plate that delivers power to said swash plate, a force‑exertion spring that is supported between said lug plate and the front face of the swash plate, and a piston that undergoes reciprocating motion by said swash plate and slide movement, further comprising a gap part that is formed on the outer circumference of said drive shaft and has a step jaw so as to induce gaps, a snap ring that is attached at said gap part isolated from the rear of said swash plate, and a return ring that is equipped at said gap part so as to move along the gap part by the elastic force of a return spring, one side of which is supported by said snap ring, whereby one end is held at said step jaw upon maximum movement toward said swash plate and the other end is held at said snap ring upon maximum movement in the opposite direction. According to the present invention, while the swash plate must maintain a minimum slope angle, one end of the return ring supports the rear of the swash plate and the other end is held by the snap ring so that the swash plate can maintain a minimum slope angle regardless of manufacturing deviation in the spring constant of the return spring.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention deals with an exhaust check valve of a swash plate compressor, and comprises a valve body in which a refrigerant inlet and a refrigerant outlet are formed, a moving body installed within said valve body that closes and opens both the refrigerant inlet and the refrigerant outlet together, and a spring that presses said moving member with a certain pressure; a separate refrigerant outlet cavity is formed on said valve body and is intended to vent leaked gas generated during operation at the pressure difference setting or less, so that refrigerant can be exhausted smoothly depending upon the pressure difference setting, thus enabling the enhancement of compressor efficiency and reliability.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention relates to an inverter housing arranged at one side of a main housing of an electromotive compressor. The inverter housing includes a bottom member facing the main housing, and a wall formed along the circumference of the bottom member and which extends to a predetermined length from one surface of the bottom member. The bottom member has an upper surface with a plurality of recesses for inserting electronic components, and a lower surface with a groove formed by the recesses formed adjacent to one another. The thus-configured present invention has advantages in that the plurality of recesses serve to widen the contact area at which a heating element contacts a refrigerant to improve the cooling efficiency of the refrigerant, the heating element is inserted in and fixed at the recesses to improve the fixation stability of the heating element, and a plurality of components are optimally arranged in the inverter housing to reduce the size of the same.

IPC Classes  ?

• F04B 49/00 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups

Abstract

The present invention relates to a scroll fluid machine including a housing, a driving unit for generating a rotating force, a driving shaft rotating by the driving unit, a fixed scroll having a scroll wrap and which is fixed at the housing, a rotary scroll having a scroll wrap and which is connected to the driving shaft to rotate, and an eccentric operation unit interconnected between the rotary scroll and the driving shaft. The eccentric operation unit includes a crank pin arranged eccentrically at the front end of the driving shaft, and an eccentric bush interposed between the circumference of the crank pin and the rotary scroll such that the eccentric bush rotates relative to the rotary scroll. The eccentric bush has a balance weight fixed at the side opposite from the rotary scroll, extending from the center of the driving shaft.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type

Abstract

The present invention relates to a scroll compressor comprising: a housing; a driving unit for generating a rotating force; a scroll compression unit including a fixed scroll constituted by an involute scroll wrap for compressing sucked in fluid and fixed irrespective of the rotation of a driving shaft of the driving unit, a rotary scroll which rotates in accordance with the rotation of the driving shaft and has an involute scroll wrap coupled to the scroll wrap of the fixed scroll; a main frame arranged in the housing, and which supports the rear surface of the rotary scroll, and has an interior with a back pressure chamber; and a thrust plate interposed between the rotary scroll and the main frame, and a sealing member inserted between the rotary scroll and the  main frame. The sealing member includes a first sealing member inserted between the rotary scroll and the thrust plate, and a second sealing member inserted between the thrust plate and the main frame. The present invention includes the high hardness thrust member inserted in the friction area between the rotary scroll and the main frame to minimize the increase in mass, to prevent wear in the friction area, and to prevent the breakage and the degradation in the efficiency of the compressor.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Abstract

The present invention relates to a method for controlling an inverter-integrated electric compressor for a vehicle air-conditioning system, and more particularly, to a method for controlling an inverter-integrated electric compressor for a vehicle air-conditioning system which can reduce only the RPM of a motor without stopping an inverter and thus maintain a rated power and torque when a compression load of an air-conditioner is large and an over-current occurs in the inverter, exceeding the torque generated from the motor of the electric compressor, and which can reduce the RPM, which is an angular speed, and increase a torque, and thus continuously providing drivers with a comfortable environment with a vehicle air-conditioner even when the torque of the motor exceeds the maximum level due to overload, and which can reduce risks of the inverter and the electric compressor and thus prevent secondary damage. The method for controlling an inverter-integrated electric compressor for a vehicle air-conditioning system comprises: the first step of calculating a target RPM of a motor for driving an inverter-integrated electric compressor in a vehicle air-conditioning system; the second step of checking whether or not the current applied to the motor driven according to the target RPM exceeds the threshold value preset in a control unit; and the third step of performing a feedback control for reducing the target RPM and reducing the current if the current applied to the motor exceeds the threshold value, and of rotating the motor according to the target RPM if the current does not exceed the threshold value.

IPC Classes  ?

• B60H 1/32 - Cooling devices
• F04B 49/06 - Control using electricity

Abstract

The present invention relates to a compressor comprising: a compressor housing having a sensor coupling hole and a control valve coupling hole; a support plate arranged to contact the compressor housing, and having perforations which are formed at the positions corresponding to a sensor coupling hole and a control valve coupling hole and through which a sensor and a control valve respectively passes; the sensor and the control valve passing through the perforations of the support plate and inserted into the sensor coupling hole and the control valve coupling hole, respectively; and a washer which is fitted to the outer circumferential surface of the sensor passing through the support plate and inserted into the sensor coupling hole, and which is coupled to the sensor coupling hole to fix the sensor. The compressor according to the present invention uses a support plate and a washer during the assembling process for installing components such as a sensor and a control valve in a compressor housing, without welding them, thereby reducing a rate of defective components.

IPC Classes  ?

• F04B 39/10 - Adaptation or arrangement of distribution members

Abstract

An oil separator of the present invention comprises a hollow outer body in which an inlet port and a drain hole are formed and an inner tube which is constantly distanced from the inner circumferential surface of the hollow outer body and comprises a discharge port in the center thereof. The inner circumferential structure guides the oil toward the opposite drain hole to the discharge port. The present invention is capable of maximizing oil separation through increasing centrifugal force. In addition, gas and oil are prevented from being remixed by guiding the oil separated by centrifugal force according to a screw and tapered portion so maximization of oil separation can be obtained.

IPC Classes  ?

• F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil

Abstract

According to the present invention, a reciprocating compressor with a rotary valve comprises a cylinder block with plural cylinder bore, a drive shaft which is supported and permitted to rotate in relation to the cylinder block, a piston which is housed in the cylinder bore and allowed to reciprocate therein, a power transmitting unit which connects the piston and drive shaft, a rear housing wherein an intake chamber and exhaust chamber are formed, and a rotary valve which rotates with the drive shaft and is installed in the inner surface of a coupling hole formed in the cylinder block and permitted to slide and rotate therein. In the inner circumference of the cylinder block, connection holes are respectively connected to the cylinder bore. A bypass unit is included between the coupling hole and rotary valve and bypasses the refrigerant remaining in the connection hole of one cylinder bore during the compressive stroke of the piston, then discharges it through the connection hole of another cylinder bore.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 39/10 - Adaptation or arrangement of distribution members

Abstract

The present invention concerns a swash plate compressor comprising: a drive shaft for transmitting the driving force of the engine; a lug plate provided on the drive shaft; a swash plate connected to the lug plate; and a piston which is connected to the swash plate and which is connected in such a way as to be able to perform a reciprocating motion through a cylinder bore. A characterising feature of the present invention is that, during shifting of the angle of inclination of the swash plate, the swash plate performs both a rotational motion and a sliding motion in the axial direction relative to the drive shaft, and that the centre of the rotational motion is displaced in the lug-plate direction relative to the centre in the thickness direction of the swash plate. The present invention provides the advantageous effect that it reduces the occurrence of vibration and noise since it decreases rotation balance by preventing the centre of gravity from becoming distant from the centre of the drive shaft even if the angle of inclination of the swash plate is made variable through movement of the centre of rotation of the swash plate.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

The present invention relates to an inverter type scroll compressor and comprises a housing, a fixed scroll which is set up inside the housing, a swivel scroll which swivels around the fixed scroll, a driving unit which turns the swivel scroll, an intake port and a discharge port which are in the housing, and an inverter which faces the front surface of the fixed scroll. An intake hole penetrating to the compression chamber and a discharge hole are respectively formed in the fixed scroll and the swivel scroll. Accordingly, the present invention is configured so that coolant is discharged through the discharge hole after the coolant passes through the inverter and the fixed scroll and then flows into the compression chamber. Therefore, this prevents overheating of the compressor caused by the inverter and increases remarkably the efficiency of the compressor by cooling the inverter and a compressed coolant with additional coolant at the same time. Additionally, the power required for compression up to a certain pressure is saved.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Abstract

The present invention relates to a scroll compressor, with an oil-separating driving shaft, that comprises a housing, a fixed scroll which is installed inside the housing, a swivel scroll which swivels around the fixed scroll, and a drive shaft which drives the swivel scroll. In the swivel scroll, a discharge hole is formed. A discharge path is formed along the longitudinal direction of the drive shaft so that discharged coolant from the discharge hole flows therethrough. At least, a part of the discharge path is inclined forward from the rotary axis to the exterior. A lubrication hole is formed in the drive shaft that penetrates from the discharge path to the outer surface of the drive shaft. Therefore, the disclosed scroll compressor may separate coolant gas and oil efficiently and discharge coolant in the drive shaft at the same time. In addition, oil separation is performed at a corresponding speed to the RPM of the drive shaft so the scroll compressor can handle the thermal load easily.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Abstract

Provided is a valve plate of a reciprocating compressor, the reciprocating compressor including a front housing and a rear housing, a cylinder block having a plurality of cylinder bores, a drive shaft rotatably supported by the front housing and the cylinder block, a swash plate connected to the drive shaft to be rotated therewith to vary its inclination angle, pistons reciprocally accommodated in the cylinder bores depending on slide movement of the swash plate, a valve plate installed between one end of the cylinder block and the rear housing and having a suction port and a discharge port, and a suction chamber and a discharge chamber that are formed in the rear housing with the valve plate interposed therebetween, characterized in that an oil suction passage, an oil discharge passage and a coolant supply passage are formed in a surface of the valve plate opposite to the pistons, the oil discharge passage is constituted by at least two branch passages directed from a center part toward an outer periphery of the valve plate, and the branch passages are connected by a connecting passage at the center part. Therefore, it is possible to appropriately distribute the pressure of oil to prevent oil leakage to the coolant supply passage, etc., even when the pressure of the oil discharged through the oil discharge passage is high. Further, the branch passages and the connecting passage have a specific shape to enable smooth flow of the oil.

IPC Classes  ?

• F04B 39/10 - Adaptation or arrangement of distribution members

Abstract

Provided is a variable dispiacement compressor comprising a cylinder block having a plurality of cylinder bores, housing, a drive shaft rotatably supported by the cylinder block, a lug plate, a swash plate being rotated by the lug plate to vary a tilt angle thereof, a sleeve reciprocally moving along the drive shaft, an addition discharge passage for fluid communication between the swash plate chamber and the suction chamber, characterized in that the variable displacement compressor comprises: a communication hole 142 being a part of the addition discharge passage and formed in the drive shaft in its longitudinal direction; and a lateral communication passage formed at the lateral side of the drive shaft to be connected to the communication hole such that the lateral communication passage is opened and closed by reciprocal movement of the sleeve. Therefore, even though the swash plate is at position of the maximum tilt angle, the temperature of the swash plate chamber is prevented from rising by making a smooth refrigerant flow from the swash plate chamber to the suction chamber, thereby maintaining higher lubrication ability.

IPC Classes  ?

• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

Provides is a variable displacement swash plate type compressor comprising a drive shaft, a lug plate fixedly installed at one side of the drive shaft, a swash plate dispose at another side of the drive shaft and rotated by the lug plate to vary a tilt angle thereof, a sleeve reciprocally moving along the drive shaft to let the swash plate rotate, and a spring supported between the sleeve and the lug plate, characterized in that the variable displacement swash plate type compressor comprises a restriction ring installed around the drive shaft between the lug plate and the sleeve to contact with the swash plate at a maximum tilt angle of the swash plate, wherein an end of the restriction ring is contacted with the lug plate and another end of the restriction ring is supported by the spring. Thus, since the direct contact between the swash plate and the lug plate is prevented, when the swash plate reaches at the maximum tilt angle, it is possible to reduce the noise and the wear remarkably.

IPC Classes  ?

• F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

Provided is a variable displacement swash plate type compressor including a cylinder block having a plurality of cylinder bores, a drive shaft rotatably supported by the cylinder block, a lug plate fixedly installed at the drive shaft, a swash plate rotated by the lug plate to vary its inclination angle, and pistons reciprocally accommodated in the cylinder bores depending on rotation of the swash plate, the compressor including a projection projecting from the lug plate toward the swash plate and disposed only behind the rotational direction of the drive shaft, a slope formed on the rear part of the lug plate at one side of the projection, an arm projecting from the swash plate toward the lug plate, a first roller coupled to the arm in front of the rotational direction of the drive shaft to move along the slope in a contact manner, and a second roller coupled to the arm adjacent to the projection to move along the projection and the slope in a contact manner.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

Provided is a housing integrated with an oil separating structure for a reciprocating compressor including a housing having a suction chamber and a discharge chamber, a cylinder block coupled with the housing and having a plurality of cylinder bores, pistons reciprocally accommodated in the cylinder bores, piston drive means for driving the pistons, and a valve apparatus opposite to bottoms of the pistons and having a suction port and a discharge port in communication with the suction chamber and the discharge chamber, characterized in that: the oil separating structure has an inner recess having a gas discharge port formed at its bottom, a peripheral recess formed around the inner recess and in communication with the discharge chamber, and an oil discharge port in communication with the inner recess in a circulation manner, which are integrally formed with each other; and the discharge chamber rather than the suction chamber is disposed adjacent to a center thereof. Therefore, since the oil is separated from the coolant introduced into the discharge chamber and reused, it is possible to increase efficiency and maintain durability of the compressor. In addition, since the oil separating structure is integrally formed with the housing, there is no need to provide a separate component for separating oil, and the housing can be readily formed to reduce manufacturing cost.

IPC Classes  ?

• F04B 39/12 - CasingsCylindersCylinder headsFluid connections
• F04B 39/04 - Measures to avoid lubricant contaminating the pumped fluid

Abstract

Provided is a gear type oil pump for a reciprocating compressor inserted into a mounting space provided at one side of a drive shaft to compress and inject oil, which includes: a gear assembly including an inner gear fixed to one end of the drive shaft, an outer gear accommodating the inner gear therein and installed eccentrically with respect to the inner gear, and an eccentric ring rotatably supporting the outer gear; a washer disposed inside the mounting space and adhered to the gear assembly by a ring mounted on the drive shaft; an accommodating member fixed to the drive shaft to accommodate the washer; and a compression means disposed between the accommodating member and the washer and fixedly inserted into the accommodating member in a circumferential direction thereof, and having a plurality of projections projecting toward the washer in a circumferential direction thereof.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups

Abstract

Provided is an apparatus for adjusting a top clearance of a reciprocating compressor including: a housing, a cylinder block having a plurality of cylinder bores, pistons reciprocally accommodated in the cylinder bores, a piston drive means for driving the pistons, piston connection shafts connected to the pistons, suction/discharge valves installed opposite to bottoms of the pistons, and a suction chamber and a discharge chamber formed in the housing through the medium of the suction/discharge valves, characterized in that each of the piston connection shafts has a conveyance nut threadedly engaged therearound. Therefore, it is possible to readily and precisely adjust a top clearance between a piston and a valve apparatus of a reciprocating compressor, and a dead volume caused by the top clearance can be minimized depending on characteristics of the valve and piston.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

Provided is an oil separator for a reciprocating compressor having an insulation function, the compressor including: a housing, a cylinder block having a plurality of cylinder bores, pistons reciprocally accommodated in the cylinder bores, a piston drive means for driving the pistons, a piston connection shaft connected to the pistons, a valve apparatus installed opposite to bottoms of the pistons and having suction ports and discharge ports, and a suction chamber and a discharge chamber formed at the housing with the valve apparatus interposed therebetween, characterized in that the oil separator includes: an inner recess having a gas discharge port; a peripheral recess formed around the inner recess and in fluid communication with the discharge port; and an oil discharge port for communicating the inner recess with the exterior, wherein the oil separator is installed in the discharge chamber. Therefore, it is possible to increase efficiency of the compressor and maintain durability by separating oil from coolant introduced into the discharge chamber. In addition, coolant sucked from the suction chamber is not thermally affected by coolant discharged through the discharge port to maintain high volume efficiency of the compressor.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

Provided is a valve apparatus for use in a reciprocating compressor, which includes a housing, a cylinder block having a plurality of cylinder bores, pistons reciprocally accommodated in the cylinder bores, a piston driving means for driving the pistons, a valve apparatus having suction valves and discharge valves installed opposite to bottom surfaces of the pistons, and suction chambers and discharge chambers formed at the housing and separated by the valve apparatus, characterized in that the valve apparatus includes a valve plate having a plurality of suction ports and discharge ports formed opposite to the bottom surfaces of the pistons and along its circum¬ ferential direction; dome-shaped shell valves detachably installed at the discharge ports adjacent to the discharge chamber; and a retainer disposed opposite to the valve plate with the dome- shaped shell valve interposed therebetween. Therefore, since the dome-shaped shell valve moves between the valve plate and the retainer to open/close the discharge port of the valve plate, it is possible to minimize a dead volume due to a space in the discharge port and maximize the efficiency of the compressor.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
• F04B 39/10 - Adaptation or arrangement of distribution members

Abstract

Provided are a mechanism spring and a swash plate type compressor employing the same. The mechanism spring includes: a flat part having an insert groove formed at one side and into which a drive shaft is inserted, and two extension plates formed at both sides of the insert groove; a curved support part having two support plates disposed opposite to the two extension plates of the flat part, and bent toward the flat part in a convex manner when seen from a side view; and a curved connection part having two curved connection plates for connecting one ends of the two extension plates of the flat part to one ends of the two support plates of the curved support part. Therefore, it is possible to improve initial working performance of a compressor driven at a minimum inclination angle during operation of an air conditioner, and readily absorb shock due to rapid variation to the minimum inclination angle of the swash plate in a compression process during non-operation of the air conditioner. In addition, it is possible to readily perform their assembly and simplify the structure. Further, it is possible to prevent friction noise due to slide contact during operation of the compressor by securely fixing the mechanism spring to the drive shaft.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

Provided is a variable displacement swash plate type compressor including a cylinder block having a plurality of cylinder bores, a front housing disposed in the front of the cylinder block to form a swash plate chamber, a drive shaft rotatably supported by the cylinder block, a lug plate disposed in the swash plate chamber of the front housing and fixed to the drive shaft, a rear housing disposed in the rear of the cylinder block to form a suction chamber and a discharge chamber in communication with the cylinder bores through suction/discharge valves, a swash plate rotated by the lug plate to vary its inclination angle, a spring supported between the lug plate and the swash plate, and pistons slidably engaged with the swash plate and reciprocally accommodated in the cylinder bores, characterized in that a power transmission groove is formed at a rear part of the lug plate opposite to the swash plate, a hooking projection inserted into the power transmission groove is formed at a front part of the swash plate opposite to the lug plate, and slide blocks are installed at a pin projecting from both sides of the hooking projection to be interposed between an inner side surface of the power transmission groove and an outer side surface of the hooking projection.

IPC Classes  ?

• B29C 43/22 - Compression moulding, i.e. applying external pressure to flow the moulding materialApparatus therefor of articles of indefinite length

Abstract

Provided is an oil separating structure of a variable displacement compressor including: a cylinder block having a plurality of cylinder bores; a front housing disposed in the front of the cylinder block to form a swash plate chamber; a drive shaft rotatably supported at the cylinder block; a lug plate disposed in the swash plate chamber of the front housing and fixedly installed at the drive shaft; a rear housing disposed in the rear of the cylinder block and having a discharge chamber and a suction chamber communicating with the cylinder bores; a swash plate installed to be rotated by the lug plate to vary its inclination angle; pistons connected to the swash plate and reciprocating in the cylinder bores; a suction path for communicating the swash plate chamber and the discharge chamber; an additional exhaust path for communicating the swash plate chamber and the suction chamber; and a control valve installed in the middle of the suction path, characterized in that the drive shaft (140) has a communication aperture (142) formed therein for communicating the swash plate chamber (120a) and the suction chamber (132), and the lug plate (180) has a first communication hole (185a) passing therethrough and a second communication hole (185b) formed therein for communicating the first communication hole (185a) and the communication aperture (142). Therefore, oil and refrigerant are smoothly separated from each other using only the communication hole formed in the lug plate without an additional oil separator, thereby simplifying an inner constitution of a compressor.

IPC Classes  ?

• F04B 27/08 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis

Abstract

Provided is a scroll compressor having a rotation prevention mechanism including: a housing for accommodating components; a drive unit for generating a rotational force; a suction part for sucking fluid from the exterior; a scroll compression part including a stationary scroll constituted of a spiral scroll wrap for compressing the fluid sucked from the suction part and fixed regardless of rotation of a drive shaft of the drive unit, and an orbiting scroll orbited depending on rotation of the drive shaft and having a spiral scroll wrap; and a discharge part for discharging the high pressure fluid compressed by the scroll compression part, characterized in that a guide ring is installed between the stationary scroll and the suction-side housing, a plurality of fitting pins are installed to project forward from an outer periphery of the orbiting scroll, and a plurality of fitting grooves, in which the fitting pins are accommodated, are formed at an inner periphery of the guide ring.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Abstract

Provided is a scroll compressor having an improved function of oil circulation and back pressure control. The scroll compressor includes: a housing; a drive part for generating a rotational force; a drive shaft driven by the drive part; and a scroll compression part including a stationary scroll fixed regardless of rotation of the drive shaft and having a scroll wrap for compressing sucked fluid and a discharge port for supplying coolant into a discharge chamber, and an orbiting scroll orbited depending on rotation of the drive shaft and having a scroll wrap, characterized in that the coolant compressed by the scroll compression part is conveyed to the discharge chamber, the coolant of the discharge chamber is separated into oil and gas in an oil separator, the gas being discharged through a discharge hole and the oil being supplied into a back pressure chamber through a return path formed in the stationary scroll, and the oil is returned into a suction chamber through a back pressure adjustment valve.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
• F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet