An air-conditioning apparatus is provided which is capable of controlling power usage within power limits of a power supply in a relatively small air-conditioning apparatus in which a condenser is placed below an evaporator and effectively using the air-conditioning (cooling) capacity. An air-conditioning apparatus 100 includes a housing 60 configured to accommodate a refrigerant circuit R having: a compressor 10; a condenser 20; an evaporator 30; and an expansion device 40, and a control device 50, in which the control device 50 includes: an upper operation limit value decision unit 502; a rotation speed command value decision unit 503; and a compressor rotation control unit 506, the upper operation limit value decision unit 502 executes control of deciding an upper operation limit value Rrmax of the compressor 10 with reference to a load on the compressor 10, the rotation speed command value decision unit 503 executes control of: deciding a rotation speed command value Rc with reference to a target discharge temperature Ttgt and a present rotation speed Rnow of the compressor 10 in a case where the load is relatively low; and deciding that the present rotation speed Rnow or the upper operation limit value Rrmax is a rotation speed command value Rc in a case where the load is relatively high, and the compressor rotation control unit 506 controls the drive of the compressor 10 on the basis of the rotation speed command value Rc.
F24F 11/46 - Improving electric energy efficiency or saving
F24F 11/86 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
When a circuit board of an inverter is attached, even if a tip of a connection terminal hits the circuit board, it is difficult to bend the tip. An electric compressor includes an electric motor, a rotating shaft, a compression mechanism, an inverter, a housing having a first accommodation chamber that accommodates the electric motor, the rotating shaft, and the compression mechanism, and a second accommodation chamber that accommodates the inverter, a hermetic terminal provided in a partition wall that partitions the first accommodation chamber and the second accommodation chamber, and a connection terminal that connects the hermetic terminal and the inverter. A terminal receiving member is disposed between the hermetic terminal and the connection terminal, and provides plural insertion holes through which each terminal portion of the hermetic terminal can be inserted and a terminal receiving surface for receiving the connection terminal.
Provided is a thermal management system that makes it easy to control a dehumidification amount and a blower air temperature to the inside of a vehicle cabin in a dehumidification heating operation. A low-temperature-side heat medium circuit 30 includes a proportional control valve V 31 disposed downstream of a cooler core 31, and when the dehumidification heating operation is performed in the vehicle cabin, in a high-temperature-side heat medium circuit 20, a heat medium circulates between a high-temperature-side heat exchanger 12 and a heater core 21, a channel switching device 70 connects the low-temperature-side heat medium circuit 30 and an outdoor heat exchange circuit 60, and the proportional control valve V 31 is capable of dividing the heat medium having flowed through the cooler core 31 into a first channel through which the heat medium having flowed through the cooler core 31 flows to downstream of a radiator 61 and upstream of a low-temperature-side heat exchanger 14 and a second channel through which the heat medium having flowed through the cooler core 31 flows to the radiator 61.
[Problem] To provide a vehicle air conditioning device capable of avoiding overflow of a liquid refrigerant from an accumulator in start-up control of heating by a hot gas cycle. [Solution] A refrigerant circuit 10 includes: a condenser path through which a refrigerant discharged by a compressor 11 flows to the upstream side of an accumulator 15 via a high-temperature-side heat exchanger 12 serving as a condenser; and a hot gas bypass path through which the refrigerant discharged by the compressor 11 bypasses the high-temperature-side heat exchanger 12 serving as the condenser and flows to the upstream side of the accumulator 15. A control device 200 executes start-up control for causing the refrigerant to flow through the hot gas bypass path and the condenser path and circulating a heat medium of a heat medium circuit 20 such that the refrigerant and the heat medium can exchange heat at the high-temperature-side heat exchanger 12 serving as the condenser.
[Problem] To provide a vehicle air conditioning device that has good fast-heating properties or fast-cooling properties. [Solution] Provided is a vehicle air conditioning device 1 comprising: a thermal energy generation unit 50 that generates heating energy or cooling energy; an HVAC unit 70 that has an HVAC internal space 73 in which temperature control units 71, 72 for controlling, using the thermal energy generated by the thermal energy generation unit 50, the temperature of air to be supplied to the inside of a vehicle cabin are disposed; a duct that is for supplying, to the inside of the vehicle cabin, the air in the HVAC internal space 73 the temperature of which has been controlled by the temperature control units 71, 72; a heat medium circuit 60 that causes a heat medium to circulate between the thermal energy generation unit 50 and the temperature control units 71, 72; and a control device 10, wherein the control device 10 is capable of executing an air conditioning preparation mode in which, before an air conditioning turn-on timing, in the state where the air conditioning is turned off, the temperature of the heat medium flowing through the heat medium circuit 60 is controlled and the temperatures inside the HVAC internal space 73 and the duct are controlled in advance.
[Problem] To provide a refrigerant unit with which collision safety can be enhanced and a combustible refrigerant can be used safely. [Solution] Provided is a refrigerant unit in which components including a compressor, a condenser, an expansion device, an evaporator, and an accumulator are attached to a support member, the refrigerant unit being characterized in that: the support member has a bottom plate part and a standing wall; the compressor is disposed on one side of the standing wall, while the condenser, the expansion device, the evaporator, and the accumulator are disposed on the other side of the standing wall; the support member includes protrusions on a front surface and both lateral surfaces of a vehicle, the protrusions protruding further in a front direction and both lateral outer directions than the components; and the protrusions are provided on a vertically upper side and a vertically lower side of the support member.
Provided is a heat exchanger including a joining member that can join inflow/outflow piping to the heat exchanger with high positional accuracy of a joining position without increasing the number of components and reducing the degree of freedom in designing HVAC. Provided is a heat exchanger including a pipe cap connected to a heat medium inflow/outflow pipe, the heat exchanger being characterized by including a pair of header tanks and characterized in that: the pipe cap is provided with a first opening into which the heat medium flows and a second opening from which the heat medium flows out; cylindrical rising parts having the same height are formed in the first opening and the second opening, the direction of the central axis of the rising parts being parallel to the extending direction of the header tanks; a flange part is formed at the tip of the rising parts; and a line obtained by vertically projecting the outer edge of the flange part in the extending direction does not extend beyond the outer edge of the pipe cap excluding the flange part.
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
[Problem] To provide a refrigerant unit with which it is possible to enhance collision safety and safely use a combustible refrigerant. [Solution] A refrigerant unit in which constituent elements including a compressor, a condenser, an expansion device, an evaporator, and an accumulator are attached to a support member, the refrigerant unit being characterized in that the support member has a bottom plate part and a rising wall that form a T-shaped cross section, the bottom plate part and the rising wall extend further outward than the constituent elements, and the T-shaped cross section is disposed in a vehicle front direction.
An air-conditioning apparatus includes: a refrigerant circuit including a compressor, a condenser, a decompression device, an evaporator, and a refrigerant channel that connects the compressor, the condenser, the decompression device, and the evaporator, in which a refrigerant circulates; and a condensate water receiving portion placed between the evaporator and the condenser below the evaporator, the condensate water receiving portion being configured to guide condensate water produced in the evaporator toward a surface of the condenser in a front-rear direction intersecting a width direction of the evaporator, and the condensate water receiving portion includes: a receiving surface that receives the condensate water, and a plurality of guide projections spaced apart from one another in the width direction, each of the guide projections protruding upward from the receiving surface and extending in the front-rear direction.
An electric compressor is provided which is capable of suppressing an increase in a projected area of an inverter accommodating portion even if a filter component for electromagnetic noise suppression increases in size or the number of filter components increases. In an electric compressor (1), a filter circuit portion (30) includes: a first filter circuit board (31) on which a plurality of electrolytic capacitors (51) is mounted; and a second filter circuit board (33) on which a normal mode choke coil (53), a common mode choke coil (55) and the like are mounted, and the first filter circuit board (31) and the second filter circuit board (33) are electrically connected to each other, and accommodated in an inverter accommodating portion (7) in a state of being placed on top of each other across a plate-shaped resin member (35).
H02K 11/33 - Drive circuits, e.g. power electronics
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
H02K 11/00 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
H02K 11/02 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
There is provided a heat exchanger capable of enhancing heat exchange efficiency while suppressing an increase in the size of the heat exchanger. A heat exchanger 100 includes a heat exchange core 15 having a tube 1 elongated in one direction and an inlet-side tank portion 23I and an outlet-side tank portion 23O connected to the tube 1. The inlet-side tank portion 23I and the outlet-side tank portion 23O individually have a header tank 7 that communicates with an outside, and at least one header tank 7 is disposed between one end and the other end in a length direction L of the tube 1.
In an electric compressor (1), a filter circuit portion (30) includes a first filter circuit board (31) on which a plurality of electrolytic capacitors (51) is mounted, a second filter circuit board (33) on which a normal mode choke coil (53), a common mode choke coil (55) and the like are mounted, and a bus bar member (35) having a bus bar (351) that electrically connects the first filter circuit board (31) and the second filter circuit board (33), and a resin holding portion (352) that holds the bus bar (351), and the first filter circuit board (31) and the second filter circuit board (33) are accommodated in an inverter accommodating portion (7) in a state of being placed on top of each other across the bus bar member (35).
A vehicle thermal management control system includes: a first vehicle including a specific sensor for detecting specific thermal management information, a plurality of sensors that detects other information different from the specific thermal management information, and a control device that performs vehicle control including thermal management control based on detection information of the specific sensor and the plurality of sensors; and a second vehicle without the specific sensor, the second vehicle including a control device that performs vehicle control including thermal management control equivalent to that of the first vehicle, in which the control device of the second vehicle uses a learned estimation model, taking, as training data, the specific thermal management information detected by the first vehicle and related information relevant to the specific thermal management information, and performs thermal management control on the basis of estimation information of the specific sensor obtained by the learned estimation model.
[Problem] To provide a helical compressor capable of restricting the movement of a blade in a spiral direction and satisfactorily forming a compression chamber by preventing the blade from separating from a cylinder inner peripheral surface. [Solution] This helical compressor 1 comprises: a cylinder 2; a roller 4 which is disposed on the inner side of the cylinder and revolves; a spiral blade 7 which defines a compression chamber 37 formed between the cylinder 2 and the roller 4; and a spiral groove 38 into which the blade 7 is fitted so as to be capable of protruding and retracting. The volume of the compression chamber 37 decreases while advancing in a thrust direction of the cylinder 2 due to the revolution of the roller 4, thereby compressing a working fluid suctioned into the compression chamber 37. The helical compressor includes a restriction part that restricts the movement of the blade 7 in a spiral direction, and a pressing part that presses the blade 7 against an inner peripheral surface of the cylinder 2.
F04C 18/344 - Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups , , , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
[Problem] To provide a heat management system with which energy loss and increased power consumption can be suppressed. [Solution] In the present invention, a control device 90 determines whether or not an outdoor heat exchanger is frosted. If it is determined that the outdoor heat exchanger is frosted, the control device acquires reserved heat amount information regarding the amount of heat reserved by each of a plurality of heat absorption sources, and defrosts the outdoor heat exchanger 42 by a heat absorption source having high energy efficiency when defrosting the outdoor heat exchanger 42 on the basis of the acquired reserved heat amount information. Due to this configuration, energy loss and increased power consumption can be suppressed.
[Problem] To provide a power conversion apparatus capable of accurately estimating a resonant frequency of an input filter online in real time. [Solution] A power conversion apparatus 1 generates an AC output from a DC power source 29 by means of an inverter 28, and applies the AC output to a motor 8. The power conversion apparatus comprises: a filter 40 that is connected to an input; a current sensor 45 that detects a filter resonant current flowing through a smoothing capacitor 32 constituting the filter 40; and a control device 21. The control device 21 has a resonant frequency estimation unit 50 for estimating a resonant frequency, which is the frequency of the filter resonant current, on the basis of the filter resonant current detected by the current sensor 45.
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
In an electric compressor, a target electronic component group of a noise reduction element and a voltage smoothing element in a posture of being attached to a circuit board of an inverter is covered with a block body formed in a block shape and made of thermoplastic resin. The circuit board has one surface which faces a bottom wall located on a housing side in an inverter accommodation portion and to which the target electronic component group is attached, the inverter accommodation portion has a plurality of recessed portions formed in a portion of the bottom wall facing an end surface of the block body, and the block body has a plurality of protruding portions protruding from the end surface thereof toward the bottom wall, each of the plurality of protruding portions being fitted in a corresponding one of the plurality of recessed portions facing such a protruding portion.
An electric compressor 1 is configured such that a board 51 to which a switching element 5 is connected is assembled to a housing 11, and includes a fixing plate 57 disposed between the switching element 5 and the board 51 and having spring properties. The fixing plate 57 is held by the switching element 5, and presses the switching element 5 against the housing 11 in a state of the board 51 being assembled to the housing 11. The fixing plate 57 has a spring portion for pressing the switching element 5 against the housing 11 and a positioning portion engaged with a run-through hole of the switching element 5.
F04C 23/02 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors
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
H05K 7/14 - Mounting supporting structure in casing or on frame or rack
Provided is an information processing apparatus capable of proposing, to a user, battery degradation reduction control adapted to the orientation of the user toward use of a vehicle. An information processing apparatus 1 includes: an acquisition unit 12 configured to acquire driving information of a vehicle 3; a determination unit 14 configured to determine whether or not eco-driving is being performed on the vehicle 3 on the basis of the driving information acquired by the acquisition unit 12; and a proposal unit 15 configured to output information for proposing, to a user of the vehicle 3, battery degradation reduction control that reduces degradation of a battery 34 mounted on the vehicle 3 upon the determination unit 14 determining that eco-driving is being performed on the vehicle 3.
B60L 58/16 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
B60L 58/24 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
Provided is a vehicle-mounted electric compressor that can improve an effect of reducing noise generated from, for example, an inverter circuit without increasing electrostatic capacitance of a Y-capacitor. A vehicle-mounted electric compressor (1) includes, in a metal housing (2), an inverter board (17) on which an inverter circuit (34) that converts direct current from a high-voltage battery (41) to alternating current and applies the alternating current to a motor (8) is mounted. Included are: a common mode coil (54) inserted into a high-voltage power line (46, 47) from the high-voltage battery (41); a Y-capacitor (56) connected between the high-voltage power line (46, 47) and the housing (2); and an inductor (57) connected in series to the Y-capacitor (56).
B60L 1/00 - Supplying electric power to auxiliary equipment of electrically-propelled vehicles
B60R 16/033 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided forArrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for supply of electrical power to vehicle subsystems characterised by the use of electrical cells or batteries
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
A heat exchanger includes a plurality of heat exchange cores through which a first heat medium flows, and a case which is divided into a plurality of chambers by a partition portion, the heat exchange cores are each accommodated in the chambers adjacent to each other through the partition portion, each of the chambers is configured such that a second heat medium flows therethrough and heat is exchanged between the second heat medium and the first heat medium, each of the chambers has an inlet and an outlet for the second heat medium, and is configured to cause the second heat medium circulates in the each of the chambers to exchange heat between the second heat medium and the first heat medium, and a channel for the second heat medium on a downstream side in each of the chambers is provided at a position farther from the partition portion.
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
B60H 1/00 - Heating, cooling or ventilating devices
A vehicle air-conditioning apparatus includes a refrigerant circuit including a compressor, an indoor heat exchange unit, an air conditioning circuit including an external heat exchange unit, and a controller that controls the refrigerant circuit. The controller is feasible of selectively executing an outside air heat absorbing/heating operation in which heat is absorbed by the external heat exchange unit and a defrosting operation in which the external heat exchange unit is defrosted. The controller calculates travel time to a destination and an operation time of the outside air heat absorbing/heating operation until the outside air heat is not absorbed by the external heat exchange unit due to frosting. When the travel time is longer than the operation time, the controller executes the defrosting operation such that at least the operation time is equal to or longer than the travel time.
To provide an inverter-integrated electric compressor capable of preventing cracking of a hermetic plate and achieving reductions in size and weight.
To provide an inverter-integrated electric compressor capable of preventing cracking of a hermetic plate and achieving reductions in size and weight.
An inverter-integrated electric compressor 1 includes a motor chamber 12 in which an electric motor 2 is built, an inverter accommodation part 13 to which an inverter 3 supplying power to the electric motor 2 is attached, and a hermetic plate 52 provided on a partition wall 7A between the motor chamber 12 and the inverter accommodation part 13. A hermetic pin 53 of the hermetic plate 52 and a circuit board 51 of the inverter 3 are connected via a connection terminal 54. A through hole 56 is provided which is formed in the circuit board 51 and into which the connection terminal 54 and the hermetic pin 53 enter.
H02K 11/33 - Drive circuits, e.g. power electronics
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
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
[Problem] To provide an electric compressor capable of ensuring safety and capable of reducing cost. [Solution] When an electric compressor 10 is assembled, an inverter 40 is accommodated in a front case 11, and subsequently, a gasket 14 is attached to an attachment surface of the front case 11. At this time, positioning pins 521, 522 of a filter case 52 are inserted into positioning holes 141a, 142a of positioning pin receiving parts 141, 142 of the gasket 14. After the gasket 14 is attached to the front case 11, a cover 13 is attached to the front case 11. At this time, the positioning pins 521, 522 of the filter case 52 are inserted into positioning holes 131, 132 of the cover 13.
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
The present application relates to the technical field of heating devices, and more specifically a thick film heater assembly and a heater for a vehicle are disclosed. The thick film heater assembly includes a heating element, a heating film, an inlet pipe, and an outlet pipe. The heating element has a first surface, a first side surface, and a second side surface, the first side surface and the second side surface being connected to both sides of the first surface. A plurality of flow channels are formed inside the heating element, the plurality of flow channels are arranged at intervals along the first direction, and the flow channels penetrate the first side surface and the second side surface. The heating film is installed on the first surface. The inlet pipe is connected to the first side surface and communicates with multiple flow channels, forming an inlet chamber within the inlet pipe. The outlet pipe is connected to the second side surface and communicates with multiple flow channels. The minimum cross-sectional area of the inlet chamber in the radial direction is greater than the maximum cross-sectional area of each flow channel in the first direction.
B60H 1/22 - Heating, cooling or ventilating devices the heat being derived otherwise than from the propulsion plant
F24H 1/14 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
F24H 9/20 - Arrangement or mounting of control or safety devices
[Problem] To provide an electric compressor that reduces conductive noise while avoiding impairment of assemblability. [Solution] An electric compressor 10 comprises a compression mechanism 20, a motor 30, and an inverter 40. The inverter 40 includes: an inverter case 60 and an inverter cover 70 that form an accommodation space S in which an inverter component 50 is accommodated; and a connector 80. The connector 80 includes: an external connection part 81a that is disposed outside the inverter case 70 and connected to an object to which the connector 80 is to be connected; and a lead terminal 82 that includes an inner lead terminal portion 82a disposed in the inverter case 70 and connected to the inverter component 50. The inverter case 60 includes a case-side surrounding wall 63 that has a pocket shape surrounding a lead disposition space S1 in the accommodation space S in which the inner lead terminal portion 82a is disposed, thereby partitioning the lead disposition space S1 from another space S2 in the accommodation space S.
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
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
There is provided a heat exchanger in which a side plate is suitably connected to a side surface of a header tank (tank cap or the like). A heat exchanger of the present invention includes a plurality of tubes through which a heat medium flows, a pair of header tanks provided at both ends in an extending direction of the tubes into which the tubes are inserted, and a pair of side plates provided outside the both ends in a stacking direction of the plurality of tubes. The side plate has an engagement portion that engages with a protruding portion provided on a side surface of the header tank.
[Problem] To provide a power conversion device that, by using a GND common-type dual inverter, can expand an operation range while performing high-efficiency driving of a motor which has a winding that has an open-end structure. [Solution] The present invention is provided with a control device 6 that controls a primary-side inverter INV1 and a secondary-side inverter INV2 of a power conversion apparatus 1 of a GND common-type dual inverter. The control device 6 executes switching between a high-efficiency operation mode in which the secondary-side inverter INV2 is stopped or the secondary-side inverter INV2 outputs only reactive power, and a high-output operation mode in which the secondary-side inverter INV2 outputs either only active power or active power and reactive power. In the high-output operation mode, the active power output by the secondary-side inverter INV2 is minimized.
H02P 25/22 - Multiple windingsWindings for more than three phases
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
[PROBLEM] To provide a heat management system capable of heating on-board heat-generating equipment at an early stage, under a condition requiring heating of the on-board heat-generating equipment and using a heat-medium heating device in accordance with a target air conditioning temperature. [SOLUTION] The present invention is provided with: a heating-use heat exchanger 80 capable of exchanging heat between a portion of a heat medium flowing on the downstream side of a heat-medium heating device 22 and a heat medium circulating in a battery-temperature adjustment circuit 40; and a thermo-valve V21 that connects the heating-use heat exchanger 80 and a heater core 21, in series or in parallel on the downstream side of the heat-medium heating device 22.
B60H 1/22 - Heating, cooling or ventilating devices the heat being derived otherwise than from the propulsion plant
B60H 1/00 - Heating, cooling or ventilating devices
B60H 1/08 - Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
There is provided an electric compressor having improved insulation between terminals of switching elements constituting an inverter. In an electric compressor including an electric motor, a compression mechanism driven by the electric motor, and an inverter that drives the electric motor, the inverter includes six switching elements Q1 to Q6 individually having three terminals 24a, 24b, and 24c protruding outward, and a root portion of the terminal 24b positioned at a middle among the three terminals 24a, 24b, and 24c of the switching elements Q1 to Q6 is covered with a cover portion 31 formed of an insulating resin.
[Problem] To provide a vehicle air conditioning device capable of achieving improved convenience and comfort for occupants, reduced energy consumption, and reduced size. [Solution] A vehicle air conditioning device 1 comprising: an outside-air intake 3; an inside-air intake 4; an inside/outside-air switching damper 5; a blower 6; a total heat exchanger 7 which is provided between the outside-air intake 3 and the blower 6, and exchanges heat between outside air and return air which is inside air discharged from the inside of a vehicle cabin to the outside of the vehicle cabin; a first outside-air passage 12 through which outside air introduced from the outside-air intake 3 flows to the total heat exchanger 7; a second outside-air passage 13 through which outside air introduced from the outside-air intake 3 bypasses the total heat exchanger 7 and flows to a temperature regulator 20; an outside-air flow rate adjuster 10 for adjusting the airflow ratio flowing through the first outside-air passage 12 and the second outside-air passage 13; and a control unit 50, wherein the control unit 50 controls the outside-air flow rate adjuster 10 so that the airflow ratio is an adjustable value based on the dew point temperature Dp of air on the downstream side of the total heat exchanger 7.
[Problem] To provide a vehicle air conditioning device capable of utilizing surplus regenerative electric power without waste. [Solution] According to the present invention, when regenerative electric power is generated while a space heating operation is being performed, the regenerative electric power is supplied to a heat medium heating device 22, and if the regenerative electric power supplied to the heat medium heating device 22 exceeds a target electric power of the heat medium heating device 22 based on a target temperature of the heat medium, it is possible to select and execute either a comfort priority mode in which the amount of heat dissipated by the heat medium in a heater core 21 is increased such that the temperature of the heat medium becomes a target temperature based on a target blowing temperature of air supplied into the vehicle cabin interior, or a heat storage priority mode in which the amount of heat dissipated by the heat medium in the heater core 21 is increased by allowing the temperature of the heat medium to exceed the target temperature within a range not exceeding a predetermined allowable temperature.
B60H 1/22 - Heating, cooling or ventilating devices the heat being derived otherwise than from the propulsion plant
B60H 1/08 - Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
[Problem] Environmentally friendly refrigerants having low environmental impact have been attracting increasing attention due to environmental concerns. However, it is known that refrigerants for use in air-conditioning gradually leak over time. A refrigerant having flammability such as propane has low environmental impact. However, since the allowable charging amount of such a refrigerant is restricted when the refrigerant is used for a vehicle air‑conditioning device, there is no margin for a filling amount into, for example, an accumulator serving as a buffer, and consequently a problem arises in that reduction in the refrigerant due to leakage causes deterioration in air-conditioning performance. Furthermore, there has been a problem regarding safety issues such as fire or explosion during work of refilling a refrigeration unit with an insufficient amount of refrigerant due to flammability of the refrigerant. [Solution] Provided is a cassette that is for storing a refrigerant for filling and that is configured to be detachably attached to a connection portion which can be filled with a refrigerant and which is included in an accumulator in a refrigerant circuit that comprises a refrigerant unit in which a compressor, a condenser, an evaporator, and the accumulator are integrated.
[Problem] Refrigerants having a low environmental impact are attracting attention due to environmental considerations. However, since some such substances are flammable, there are safety issues when used as a refrigerant for vehicles. [Solution] This vehicle air conditioning device has a refrigerant circuit in which a flammable refrigerant that is heavier than air circulates, and is provided with a refrigerant unit in which a compressor, a condenser, an evaporator, and an accumulator that constitute the refrigerant circuit are integrated, the vehicle air conditioning device being provided with: a bottomed unit cover that is formed to have a volume equal to or greater than a predetermined volume and that surrounds the side surfaces of the refrigerant unit; and piping that connects the bottom surface of the unit cover to the outside of a vehicle driving compartment. In addition, a guide portion for guiding leaked refrigerant to the piping is formed in the unit cover.
Provided is a heat medium heating device that makes it possible to determine, without increasing the number of temperature sensors, that drift failure is taking place in either an inlet temperature sensor or an outlet temperature sensor. On the basis of the outputs of electric heaters (18, 19) and the temperature Tin detected by an inlet temperature sensor (41), an estimated value Toutest of the temperature of a heat medium flowing out from a heat medium outflow part (17) is calculated. On the basis of the outputs of the electric heaters (18, 19) and the temperature Tout detected by an outlet temperature sensor (42), an estimated value Tinest of the temperature of the heat medium flowing in from a heat medium inflow part (16) is calculated. When the difference between the temperature Tin and the estimated value Tinest or the difference between the temperature Tout and the estimated value Toutest is equal to or greater than a prescribed value, it is determined that an abnormality has taken place in either the inlet temperature sensor (41) or the outlet temperature sensor (42).
F24H 1/10 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
B60H 1/22 - Heating, cooling or ventilating devices the heat being derived otherwise than from the propulsion plant
[Problem] To provide a vehicle air conditioner capable of reducing the size of the entire air conditioner and reducing the cost, in the case where heat in air discharged as ventilation from a vehicle interior is recovered with a heat medium to improve efficiency of air conditioning in the vehicle interior. [Solution] A vehicle air conditioner 1 is provided with: an air conditioning case 38 through which air to be supplied to a vehicle interior 6 flows; an indoor blower 59 that causes air to flow in the air conditioning case 38; and a heat medium circuit 2 having a cooler core 18 and a heater core 19. The air conditioning case 38 has a ventilation passage 62 that is located on the upstream side of the cooler core 18 and the heater core 19 and that discharges air from the vehicle interior 6 to a vehicle exterior 7. The heat medium circuit 2 has a heat exchanger 27 for ventilation heat recovery that is provided in the ventilation passage 62 and recovers heat from air discharged to the vehicle exterior 7.
B60H 1/00 - Heating, cooling or ventilating devices
B60H 1/08 - Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
B60H 1/22 - Heating, cooling or ventilating devices the heat being derived otherwise than from the propulsion plant
Provided is an electric compressor with improved sealability when a hermetic plate is attached to a partition wall on an inverter accommodation portion side. In a state in which a hermetic plate 52 is attached to an end wall 7A (partition wall), a hermetic pin 53 passes through a penetration hole 73 formed in the end wall 7A (partition wall) and is provided from an inverter accommodation portion 13 to a motor chamber 12, an insulator 66 is individually attached to the periphery of each hermetic pin 53 on the motor chamber 12 side, and a seal material 76 is interposed between the hermetic plate 52 and the end wall 7A (partition wall) so as to surround the plurality of hermetic pins 53 and the penetration holes 73.
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 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
A vehicle air-conditioning device includes a control device that controls a refrigerant circuit and an air-conditioning unit. The refrigerant circuit has a hot gas bypass that decompresses at least part of refrigerant compressed by a compressor without the refrigerant passing through an indoor heat exchange unit and an external heat exchange unit, and returns the decompressed refrigerant to the compressor. The control device is capable of executing a hot gas heating operation of heating the inside of a cabin by causing part of the refrigerant compressed by the compressor to dissipate heat in the indoor heat exchange unit without causing the refrigerant to absorb heat in the external heat exchange unit, and opens and closes at least one of a decompression unit provided between the indoor heat exchange unit and the compressor or a hot gas decompression unit provided in the hot gas bypass during the hot gas heating operation.
[Problem] To provide a scroll compressor capable of suppressing the occurrence of sliding marks. [Solution] A scroll compressor comprising: a first scroll having a first base and a spiral-shaped first wrap erected on the first base; and a second scroll having a second base and a spiral-shaped second wrap erected on the second base, in which the first scroll and the second scroll are arranged such that the first wrap and the second wrap mesh with each other, and are configured such that the volume of a space formed between the first wrap and the second wrap is changeable by the relative orbital revolving motion of the first scroll and the second scroll, wherein at least one of the first scroll and the second scroll has a surface layer including a thick film portion and a thin film portion on a surface including a sliding surface between the first scroll and the second scroll, and at least one of the surface layers is made of resin.
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
[Problem] Air conditioning systems of electric vehicles and the like have a problem in that immediately after a vehicular air conditioner is started, a heat medium that had been stored in a reserve tank is at a relatively high temperature, and therefore a cooling effect cannot be exhibited fully until the water temperature drops to a certain extent, the required cabin air temperature is not met, and comfort is impaired for a vehicle occupant. [Solution] A reserve tank according to the present invention has: a plurality of chambers including an inflow chamber provided with an inflow part into which a heat medium flows, an outflow chamber provided with an outflow part from which the heat medium flows out, and at least one intermediate chamber; a plurality of partition walls that separate the plurality of chambers; and a plurality of communicating parts, each of which is provided in a respectively corresponding partition wall and through which the heat medium flows. Furthermore, the reserve tank has a specific chamber adjacent to one of the plurality of chambers, and a specific communicating part comprising an on–off valve is provided in a specific partition wall that separates the specific chamber and one of the plurality of chambers.
A vehicle air-conditioning device includes a refrigerant circuit having a compressor, an indoor heat exchange unit, and an external heat exchange unit, an air-conditioning unit in which the indoor heat exchange unit is disposed, and a control device that controls the refrigerant circuit and the air-conditioning unit. The refrigerant circuit has a hot gas bypass, and the control device is capable of executing a hot gas heating operation. The control device performs, at the start of the hot gas heating operation, a preparatory operation of circulating refrigerant in the refrigerant circuit without heat dissipation in the indoor heat exchange unit or with the heat dissipation suppressed until the refrigerant is brought into a predetermined state, and limits air quantity adjustment on the quantity of air blown into the cabin at least during the preparatory operation.
A vehicle air-conditioning device includes a control device that controls a refrigerant circuit, a heat medium circuit, and an air-conditioning unit. The refrigerant circuit has a hot gas bypass that decompresses at least part of refrigerant compressed by a compressor without the refrigerant passing through an indoor heat exchange unit and an external heat exchange unit, and returns the decompressed refrigerant to the compressor. The control device is capable of executing a hot gas heating operation and a heat absorption heating operation, determines the necessity of refrigerant recovery from the external heat exchange unit, and performs, after execution of a previous air-conditioning operation or before execution of the hot gas heating operation, refrigerant recovery processing of recovering refrigerant from the external heat exchange unit when it is determined that the refrigerant recovery is necessary.
Provided is a scroll-type electric compressor capable of promptly decreasing pressure inside a scroll compression mechanism to smoothly and efficiently prevent reverse rotation and reduce noise when a motor is stopped. A control device 62 executes deceleration control of switching switching elements to decrease the rotation speed of a motor 2 after having received an instruction to stop the motor 2, and brake control of stopping a rotor 29 of the motor 2 at an angle at which a back pressure hole of a movable scroll is not closed or an angle at which a discharge hole of a fixed scroll is not closed after the rotation speed of the motor 2 has been decreased by the deceleration control and switching the switching elements 66A to 66F to fix the rotor at the angle.
F04C 28/08 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed
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 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
[Problem] In heat exchangers comprising a plurality of tubes, a pair of header tanks to which the tubes are connected, a partition part provided midway through the pair of header tanks, and a heat exchange core part, slit holes are formed in the header tanks and protruding parts are formed in the partition part to thereby mate and assemble the two, after which brazing is performed. However, there is a problem in that fillets at the joint part between the header tanks and the partition part have poor corrosion resistance, resulting in a shorter service life of the heat exchanger. [Solution] Provided is a heat exchanger having a header tank comprising a partition part partitioning the interior, wherein a mating hole provided in the header tank to mate with a mating part of the partition part is given a shape that bulges vertically upward.
F28D 1/04 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits
[Problem] The present invention addresses the problem of, when brazing a heat exchanger, adherence occurring at a surface at which a stainless steel jig and an aluminum member constituting the heat exchanger come into contact with each other, said adherence resulting in damage to the heat exchanger during removal of the jig, the heat exchanger comprising: a pair of flow path formation parts obtained by providing flow path formation parts formed by layering a plurality of flow path formation units extending in an air flow direction at an interval from each other in a width direction that is a direction orthogonal to the air flow direction; a plurality of heat exchange tubes connecting the pair of flow path formation parts; heat transfer fins disposed between the heat exchange tubes adjacent to each other, on both outer sides of, from among the plurality of the heat exchange tubes layered in the layering direction of the flow path formation units, the heat exchange tubes positioned at both ends in the layering direction; and a pair of side plates respectively covering, from among the heat transfer fins, heat transfer fins positioned at both ends in the layering direction and the pair of flow passage formation parts, from both sides in the layering direction of the flow passage formation units. [Solution] An end portion of the side plates is formed into a shape that fills in a step formed on an end surface of each flow passage formation unit.
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
Provided is a heat exchanger that makes it possible to control the flow of a brazing material in a header tank of the heat exchanger and can suppress the incidence of brazing failure. This heat exchanger (1) comprises a header tank (3) having a cylindrical body (30) and a cap (33) for closing an opening at an end of the cylindrical body (30). The cylindrical body (30) is formed by combining a first member (31) and a second member (32), the cylindrical body (30) including a one-layer region (301) formed only of the first member (31) or the second member (32), and a two-layer region (302) in which the first member (31) and the second member (32) overlap. The cap (33) is provided with a bent portion (BN) at an edge portion (33T) thereof and continuously covers the one-layer region (301) and the two-layer region (302) around the opening. An inclined surface (SL) that is inclined in the direction of the bent portion (BN) is provided to the outer surface of the cylindrical body (30) in the vicinity of the bent portion (BN).
Provided is a heat exchanger that can suppress the occurrence of brazing defects in a header tank of the heat exchanger. A heat exchanger (1) comprises a cylindrical body (30) and a header tank (3) having a cap (33) for closing an opening at an end of the cylindrical body (30). The cylindrical body (30) is formed by combining a first member (31) and a second member (32), and includes a single-layer region (301) formed only of the first member (31) or the second member (32) and a double-layer region (302) formed by overlapping the first member (31) and the second member (32). The cap (33) is constituted of a third member, is provided with a bent part (BN) at an edge portion (33T), and continuously covers the single-layer region (301) and the double-layer region (302) at the periphery of the opening. An extension part (35) formed by at least one member from among the first member (31), the second member (32), and the third member is provided near the bent part (BN) and closer to the center side in the longitudinal direction of the cylindrical body (30) than the bent part (BN).
[Problem] To provide a heat exchanger with which it is possible to prevent water retention in a header tank of the heat exchanger and metal corrosion resulting therefrom. [Solution] This heat exchanger 1 comprises a header tank 3 and a plurality of tubes 2. The header tank 3 includes a first tank member 31 and a second tank member 32, each of which has a semi-split shape. The first tank member 31 has a set of first side surfaces 31S extending in the longitudinal direction. The second tank member 32 has a set of second side surfaces 32S extending in the longitudinal direction, and a bottom surface 32B. The first tank member 31 and the second tank member 32 face each other such that at least part of the set of first side surfaces 31S overlaps the inside of at least a portion of the set of second side surfaces 32S. In a region in which the second side surface 32S is exposed to the outside, a thin-walled part 325 having a lower plate thickness than the bottom surface 32B is provided to at least a portion that includes a distal-end part 323.
[Problem] In heat exchangers with a header tank comprising a partition part partitioning the interior, there is a problem in that the area around an engagement part where a mating part of a partition plate and the tank mate is vulnerable to corrosion because solder material fills up the clearance for mating. [Solution] In a heat exchanger with a header tank comprising a partition part partitioning the interior and a cap that closes up a longitudinal-direction end part, an engagement part between a mating part of the partition part and the header tank is provided at a joint part with at least one cap.
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
[Problem] To provide a power conversion apparatus capable of achieving operation in a wider range by further increasing a modulation factor while an effect of suppressing common-mode noise is substantially maintained. [Solution] A power conversion apparatus comprises a control device 21 that controls the switching of switching elements. When a command voltage vector is inside a basic voltage space and outside a modulatable region, a modulation unit 35 of the control device 21 switches between and executes a first pulse width modulation for regulating the command voltage vector to be inside the modulatable region, and a second pulse width modulation for fixing the on/off states of upper and lower arm switching elements of two phases and modulating the on/off states of upper and lower arm switching elements of the other one phase.
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
[Problem] To provide a heat management system capable of avoiding high-load operation and blowout temperature restriction. [Solution] A heat management system 1 comprises: a refrigerant circuit 10 that has a high-temperature-side heat exchanger 12 as a condenser and a second low-temperature-side heat exchanger 142 as an evaporator; a high-temperature-side heat medium circuit 20 which allows circulation therethrough of a heat medium that exchanges heat with a refrigerant in the high-temperature-side heat exchanger 12; and a low-temperature-side heat medium circuit 30 which allows circulation therethrough of the heat medium that exchanges heat with the refrigerant in the second low-temperature-side heat exchanger 142. At least a portion of the heat medium heated in the high-temperature-side heat exchanger 12 is caused to flow from the high-temperature-side heat medium circuit 20 to the low-temperature-side heat medium circuit 30, and the heat of the heat medium flowing from the high-temperature-side heat medium circuit 20 to the low-temperature-side heat medium circuit 30 is caused to be absorbed by the refrigerant in the second low-temperature-side heat exchanger 142.
[Problem] To enable a casing of an electric compressor to be manufactured in the same mold regardless of the shape of a connector for supplying electric power to an inverter, and to reduce manufacturing costs of the casing of the electric compressor and, by extension, the electric compressor. [Solution] This electric compressor 1 includes a motor 2, a compression mechanism 3 driven by the motor 2, a compressor casing 4 accommodating the motor 2 and the compression mechanism 3, an inverter 5 that controls the driving of the motor 2, and an inverter casing 6 accommodating the inverter 5. A connector 20 for supplying electric power to the inverter 5 is attached to a connector attachment part 10 provided on an outer surface of the inverter casing 6 via an adapter 30.
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 39/14 - Provisions for readily assembling or disassembling
[Problem] To provide heating in a low-temperature environment without using an electric heater or the like. [Solution] When a heat medium–heating electric heater 83 cannot be used in a low-temperature environment and it has been determined that there is frost on an outdoor heat exchanger 42, the outside air temperature is above a prescribed condition, and the demand for heating is high, a control device 90 selects to not perform a heat exchange at a high-temperature-side heat exchanger 22 and to perform a hot gas cycle–based defrosting and heating operation in which defrosting is performed by release of heat from a refrigerant at a first evaporator 14 to heat a heat medium flowing through a first low-temperature-side heat exchanger 24 and passage of the heated heat medium through the outdoor heat exchanger 42 and heating is performed by release of heat from a refrigerant at a second evaporator 17 to heat a heat medium flowing through a second low-temperature-side heat exchanger 27 and passage of the heated heat medium through a cooler core 72.
[Problem] To provide a power conversion device that, when a high-voltage power supply is cut off, requires neither a special discharge resistor for discharging a smoothing capacitor nor complicated winding excitation control for purposes such as preventing rotation of a motor. [Solution] A control unit 3: has a discharging circuit 26 connected to an emitter of an upper arm switching element Q1; and, when an HV battery is cut off, turns all upper and lower arm switching elements Q1-Q6 to non-conductive states and turns, to a conductive state, the upper arm switching element Q1 to which the discharging circuit 26 is connected, whereby a smoothing capacitor 6 is discharged through the discharging circuit 26 and the residual charges of the smoothing capacitor 6 are consumed through the upper arm switching element Q1 to which the discharging circuit 26 is connected.
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
[Problem] To provide an electric circuit device with which it is possible to quickly discharge a smoothing capacitor without using a low voltage power supply for a discharging circuit operation which discharges the smoothing capacitor, while keeping the loss at the time of discharging within a component rating range. [Solution] A discharging circuit 11 comprises a plurality of discharge resistors 13, 14, 18, 19, 21, 22 and a switch 16, 17 which switches a discharge resistor connected in parallel to a smoothing capacitor 6. The switch monitors the voltage of the smoothing capacitor and switches the discharge resistor connected in parallel to the smoothing capacitor in response to a drop in the voltage of the smoothing capacitor after an HV battery 8 is shut off, thereby limiting discharge-associated power consumption to within a predetermined range.
[Problem] To provide a scroll compressor capable of improving assemblability of an orbiting scroll and preventing a failure which may occur in the orbiting scroll due to a rotation prevention mechanism. [Solution] In a scroll compressor 1, a rotation prevention mechanism 80 for preventing the rotation of an orbiting scroll 52 includes a plurality of circular recesses 81 formed in the back surface of an orbiting end plate 521 of the orbiting scroll 52, and a plurality of pins 82 each protruding from a support surface 135 that supports the back surface of the orbiting end plate 521 of the orbiting scroll 52. The tip of each of the plurality of pins 82 and the vicinity thereof are disposed in the corresponding circular recess 81 among the plurality of circular recesses 81. The plurality of circular recesses 81 have undergone surface hardening treatment so that at least the inner surfaces have surface hardness equal to that of the pins 82 or have surface hardness higher than that of the pins 82.
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
To reduce heat exchangers having different functions from being thermally affected by each other, and to respond to a desired temperature requirement for a temperature adjustment target. Provided is a refrigerant unit 10 including a refrigerant circuit and a single support member 12 that collectively supports components of the refrigerant circuit. The refrigerant circuit includes a first heat exchanger 30 and second heat exchangers 41, 42 having different functions. The first heat exchanger is disposed between the plurality of the second heat exchangers. A distance from one side of the plurality of second heat exchangers to the first heat exchanger is greater than a distance from the other side of the plurality of second heat exchangers to the first heat exchanger.
[Problem] To provide a heat exchanger in which it is possible to suppress deformation and deterioration of a side tank caused by a fixing jig during brazing. [Solution] A heat exchanger 1 comprises: a core part 10 in which tubes 100 are integrated and arranged; a side plate 13; and a side tank 60 having a heat medium flow passage 64 that is partitioned by making a first tank member 601 and a second tank member 602 face each other. A fixing jig support part 110 is provided by overlapping the first tank member 601, the second tank member 602, and the side plate 13A at least at a portion where a fixing jig Jw abuts on the outside of the flow passage 64.
F28F 9/013 - Auxiliary supports for elements for tubes or tube-assemblies
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
F28F 9/04 - Arrangements for sealing elements into header boxes or end plates
[Problem] To provide an electric compressor in which versatility is improved by providing a casing and a fastening part separately such that the position of the fastening part with respect to the casing can be easily changed. [Solution] An electric compressor 1 in which a casing 2 that houses a compression mechanism is attached to an attachment part by a fastening part 13, wherein: the fastening part 13 is provided separately from the casing 2; a rail part 7 that extends in an axial direction is provided to an outer surface of the casing 2; and the fastening part 13 is capable of moving by sliding on the rail part 7 and is fixed at a prescribed position on the rail part 7.
[Problem] To provide an electric compressor capable of handling high voltage without increasing the size. [Solution] An electric compressor 1 has: an electric motor 2; a rotating shaft 3 that is rotated by the electric motor 2; a compression mechanism 4 that is driven by the rotating shaft 3; an inverter 6 that drives the electric motor 2; a housing 5 that houses the electric motor 2, the rotating shaft 3, and the compression mechanism 4; and an inverter housing section 7 that is provided integrally with the housing 5 and houses the inverter 6. The inverter 6 includes a plurality of power switching elements 21 arranged side by side on a flat heat dissipation surface 7a provided inside the inverter housing section 7 with an insulating sheet 11 interposed therebetween. At least a part of the heat dissipation surface 7a positioned between the plurality of power switching elements 21 is formed as a convex portion 7b extending in a direction perpendicular to the arrangement direction of the plurality of power switching elements 21.
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different main groups of the same subclass of , , , , or
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
H01L 23/34 - Arrangements for cooling, heating, ventilating or temperature compensation
65.
MOTOR, ELECTRIC COMPRESSOR COMPRISING SAME, AND METHOD FOR MANUFACTURING SAID MOTOR
[Problem] To provide a motor that comprises a bus bar unit and that is capable of relaxing dimensional tolerance and positional tolerance. [Solution] A motor 4 comprises: a stator 21 comprising a core 22 and an insulator 27 which is provided to the core 22 and around which magnet wires 23 are wound; and a bus bar unit 26 formed by molding, with a resin, a bus bar which electrically connects the magnet wires 23 coming out of slots of the stator 21 and a three-phase terminal 33. The motor comprises: a keyway 31 which is formed on the outer periphery of the insulator 27; and a leg part 43 which is formed on the bus bar unit 26 and extends into the keyway 31. The width of a claw section 47 of the leg part 43 is smaller than the width of the keyway 31.
H02K 3/52 - Fastening salient pole windings or connections thereto
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
[Problem] To provide a vehicle air conditioning apparatus capable of reducing the target number of revolutions of a compressor. [Solution] The present invention is provided with a heat exchange unit 200 that, when a hot gas heating operation is being executed, exchanges heat between a refrigerant flowing through a path on the downstream side of an indoor condenser 12 and a refrigerant flowing through a path on the downstream side of a decompression device 13a disposed on a bypass path. Therefore, even if the amount of the refrigerant flowing through the bypass path is not increased, the refrigerant having the heat amount required for executing the hot gas heating operation can be returned to a compressor 11, so that the amount of the refrigerant flowing through the bypass path can be suppressed. Accordingly, the target number of revolutions of the compressor 11 can be reduced.
[Problem] To provide a vehicle air conditioning device capable of suppressing fluctuations in the blowout temperature and capable of suppressing a deterioration in comfort. [Solution] The pressure and/or temperature of a refrigerant suctioned by a compressor 11 is controlled so as to meet a target value in an operation mode in which a radiator 61 serving as an outside air heat exchange unit exchanges heat with outside air. Therefore, the pressure and/or temperature of the refrigerant suctioned by the compressor 11 can be kept constant when a disturbance (fluctuation in heat load) occurs, and fluctuations in a refrigeration cycle can be suppressed. Thus, fluctuations in the blowout temperature can be suppressed and the deterioration in the comfort of occupants can be suppressed.
[Problem] To provide a heat exchanger capable of suppressing communication between flow paths inside a side tank and allowing easy detection thereof even if the communication occurs. [Solution] A heat exchanger 1 comprises: a core portion 10 in which tubes 100 extending in a first direction are disposed in an aggregated manner in a second direction; a side plate 13 disposed at an end of the core portion 10 in the second direction; and a side tank 60 disposed on the opposite side from the core portion 10 with the side plate 13 interposed therebetween in the second direction. The side tank 60 is configured by butting together two split members 601, 602, each having a first surface Sf1, Sf3 and a second surface Sf2, Sf4, so that the second surfaces Sf2, Sf4 face each other. The side tank 60 includes an inflow path 64A and an outflow path 64B disposed side by side, and a path separation portion 65 between the inflow path 64A and the outflow path 64B. In the path separation portion 65, the two members 601, 602 are provided with hole portions 6011, 6022 respectively. Through the hole portion 6021 in one member 602 of the two members 601, 602, a part of the other member 601 is exposed, and a first surface Sf1 of the other member 601 faces a part of the one member 602.
F28F 9/26 - Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
[Problem] To provide an air conditioning device capable of shortening a standby time until a compressor can be started up, even in a mobile air conditioning device not comprising a detection means for pressure, and improving convenience for a user. [Solution] This mobile air conditioning device 100 accommodates, in a housing 1, a control unit 8 and a refrigerant circuit comprising a compressor 2, a condenser 4, a decompression device 7, and an evaporator 3, and comprises: a first temperature sensor 201 that detects the temperature of air which has performed heat exchange with the condenser 4; and a startup determination unit 83 that, when a startup request for the compressor 2 is generated, determines whether the compressor 2 can be started up on the basis of temperature information from the first temperature sensor 201.
F24F 11/86 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
F24F 11/871 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
[Problem] To provide an electric compressor that makes it possible to prevent deformation of an attachment part provided to a housing and of the housing when the electric compressor is attached to an attachment object. [Solution] An electric compressor 1 comprises a housing 5 that accommodates a motor 2 and a compression mechanism 3, and a plurality of attachment parts 61 that are formed in the housing 5 and each have a through-hole 62. Each of a plurality of attachment bolts 20 is passed through the through-hole 62 of the corresponding attachment part 61 among the plurality of attachment parts 61 and is screwed into a female screw 12 formed in a fixed part 11 of a vehicle body 10, and the electric compressor 1 is thereby attached to the vehicle body 10. On the outer surface of at least one attachment part 61 of the plurality of attachment parts 61, a reinforcement rib 63 is formed so as to extend in the same direction as the through-hole 62 of said attachment part 61.
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
71.
POWER INPUT CIRCUIT AND INVERTER-INTEGRATED VEHICULAR ELECTRIC COMPRESSOR EQUIPPED WITH SAME
Provided is a power input circuit capable of limiting excessive inrush current generated when a DC power source is turned on and a smoothing capacitor is charged. The power input circuit includes an EMC filter circuit 7 having a smoothing capacitor 12, a subsequent-stage power switching element Q2, a switch circuit 23 that turns on/off the power switching element Q2, a subsequent-stage inrush current limiting circuit 9 that limits inrush current by adjusting the voltage of a control electrode of the power switching element Q2, a preceding-stage power switching element Q4 that conducts/blocks a conduction path between the EMC filter circuit 7 and a battery 2, and a preceding-stage inrush current limiting circuit 10 that limits inrush current when the battery 2 is turned on by adjusting the voltage of the gate of the power switching element Q4.
H02M 7/539 - 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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
An electric compressor includes a stator housing 7 in a cylindrical shape having one end opened, and a rear casing joined to an opening of the stator housing via a gasket. The stator of an electric motor is housed from the opening of the stator housing, and fixed to an inner surface of the stator housing by shrink fitting. The electric compressor includes a plurality of shrink-fit fixing surfaces 42 which is formed on the inner surface of the stator housing 7 and to which the stator is fixed, a gasket sealing surface 7B which is formed on an opening end surface of the stator housing 7 and on which the gasket is disposed, and a plurality of ribs 49 which is formed on an opening side of an outer surface of the stator housing corresponding to the shrink-fit fixing surfaces.
H02K 5/04 - Casings or enclosures characterised by the shape, form or construction thereof
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
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
A refrigerant circuit unit including: a refrigerant circuit including a compressor, a heater, an expansion mechanism, a cooler, and a channel module in which at least a part of a refrigerant channel that distributes a refrigerant circulated in the compressor, the heater, the expansion mechanism, and the cooler, is integrally formed; and a support plate that supports the refrigerant circuit. The channel module includes a high-pressure side region provided with a high-pressure channel through which a high-pressure refrigerant flows, a low-pressure side region provided with a low-pressure channel through which a low-pressure refrigerant flows, and a partition provided between the high-pressure side region and the low-pressure side region to separate the high-pressure side region and the low-pressure side region.
Provided is a scroll compressor with durability improved by effectively reducing strong contact between a wrap of a movable scroll and an end plate of a fixed scroll without impairing a function. A compression chamber 34 formed between wraps 24, 32 of a fixed scroll 21 and a movable scroll 22 is narrowed while moving from the outside to the inside, thereby compressing working fluid. The wrap 32 of the movable scroll 22 has an inclined portion of which a height gradually decreases toward a winding end point P2 in an area from a point P1 at which a line L1 extending outward from the center O of a spiral base circle through an outer wall extension start point S intersects the outermost wrap 32 to the winding end point P2.
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
When a busbar and an electronic device terminal are joined by welding, a good joint state is obtained while a positional relationship between the joint portion of the busbar and the terminal is stably maintained. A busbar terminal joining structure includes a welding target portion having a joint surface to be joined to a tip end portion of a rod-shaped terminal by welding, and a terminal holding portion provided at a position apart from the welding target portion and configured to limit movement of the terminal in the welding target portion when a base end portion of the terminal is inserted thereinto.
H01R 43/02 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
[Problem] To provide a two-layer flow HVAC unit capable of stably supplying ionized air into a cabin. [Solution] In the present invention, a circulation means for circulating air so that a predetermined amount or more of air always bypasses a heater 240 is provided, and an ion generation device 300 is provided so as to ionize air, out of the air bypassing the heater 240, before merging with air passing through the heater 240. Accordingly, since the air having relatively high relative humidity on the downstream side of a cooler 230 passes through the ion generation device 300, ionized air can be stably supplied into the cabin even when the ion generation device 300 functioning by absorbing moisture in the air is used.
[Problem] To provide an excellent heating medium module. [Solution] A heating medium module 10 comprises: a multi-way valve 31 that has a plurality of ports and a valve body which is configured to switch the connection of the plurality of ports; a plurality of pumps 36, 37, 38 that are each connected to the multi-way valve 31 and that are each configured to pressure-feed a heating medium; at least one flow path switching part 32, 33 that is connected to the multi-way valve 31 and that is configured to switch the flow path of the heating medium; and a support member 20 that has a multi-way valve receiving part 21 which is configured such that the multi-way valve 31 is disposed therein, a plurality of pump receiving parts 26, 27, 28 which are configured such that the plurality of pumps 36, 37, 38 are respectively disposed therein, and at least one flow path switching part receiving part 22, 23 which is configured such that the at least one flow path switching part 32, 33 is disposed therein.
[Problem] To provide a heat management system with which it is possible to suppress occupant discomfort and prevent the occurrence of failures. [Solution] The heat management system has: a cooling mode in which a heat medium circulates independently in each of heat medium flow paths 30a, 30b, 30c, 30d and heat medium flow paths 40a, 40b, 30g, 30i, 30f; and a cooling/battery cooling mode in which the heat medium can flow in and out of the heat medium flow paths 30a, 30b, 30c, 30d and the heat medium flow paths 40a, 40b, 30g, 30i, 30f via a heat medium flow path 30e and a heat medium flow path 30h. When the mode switches from cooling to cooling/battery cooling, the amount of the heat medium flowing from the heat medium flow paths 30a, 30b, 30c, 30d into the heat medium flow paths 40a, 40b, 30g, 30i, 30f is limited on the basis of temperature information of a battery 41.
[Problem] To provide an air conditioner capable of preventing fatigue and breakage of an attachment means for connecting a casing and a duct by dispersing a load occurring on the attachment means due to deformation of the duct. [Solution] An air conditioner 100 includes: a use-side heat exchanger 3; a heat source-side heat exchanger 4; a blowout port 12 through which air having undergone heat exchange with the use-side heat exchanger 3 is blown out; and a duct attachment means 150 for connecting the blowout port 12 and a duct 160 that guides air to an air-conditioning space. The duct attachment means 150 includes: a first engagement part 154 located on the inner side of the blowout port 12; and a second engagement part 155 located on the outer side of the blowout port 12.
F24F 1/028 - Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by air supply means, e.g. fan casings, internal dampers or ducts
[Problem] To provide a motor for an electric compressor, the motor such that a stator is fixed to a housing without using shrink-fitting. [Solution] Provided is a motor for an electric compressor, the motor including a housing and a stator. The stator includes a core divided into an inner core and an outer core. The inner core is press-fitted to the inside of the outer core and fixed, and the outer core is insert-molded at the inner diameter of the housing.
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
[Problem] To provide a motor in which it is possible to easily position a stator core without said stator core riding up onto an R portion formed in a housing. [Solution] A motor in which a stator core and a rotor are accommodated in a housing, wherein: the housing comprises an arc-shaped inner peripheral surface abutting an outer peripheral surface of the stator core and a seating surface abutting one end surface of the stator core, and an R portion is formed at an intersection portion where the inner peripheral surface and the seating surface intersect; and the stator core comprises a step portion which accommodates the R portion at an intersection portion where the outer peripheral surface and the one end surface intersect.
[Problem] Electric compressor motors have had, for example, the problem that, when fixing a housing and a stator by shrink-fitting, an overly strong pressure causes an excessive force to be applied, thereby deforming the stator or causing a gap (air gap) between the stator and a rotor not to be in conformance with the design specification. [Solution] An electric compressor motor comprising a stator and a rotor in a housing, said electric compressor motor being characterized in that: the housing is provided with a recess in an inner wall of a protruding part that protrudes radially inward; the stator is provided with, on an outer peripheral surface thereof, a protrusion that corresponds to the recess; and the protrusion and the recess are fixed by shrink-fitting.
[Problem] To provide a heat management system with which a hot gas heating operation can be stabilized and in which the number of components can be reduced. [Solution] This heat management system 1 comprises a refrigerant circuit 10 that includes a compressor 11, a high temperature-side heat exchanger 12, a first low temperature-side heat exchanger 14 for cooling a heat medium, a second low temperature-side heat exchanger 16 disposed in parallel with the first low temperature-side heat exchanger 14 and for cooling the heat medium, and a pressure reducing device 13a disposed in a path on the upstream side of the first low temperature-side heat exchanger 14, wherein the refrigerant circuit 10 comprises: a refrigerant flow path 10b that is a bypass path that bypasses the high temperature-side heat exchanger 12 and merges with a path on the downstream side of a branch part a2 and on the upstream side of the pressure reducing device 13a the branch part a2 being between a refrigerant flow path 10j, which is the path through which the refrigerant flows to the first low temperature-side heat exchanger 14, and a refrigerant flow path 10h, which is the path through which the refrigerant flows to the second low temperature-side heat exchanger 16.
[Problem] To provide a heat management system capable of facilitating the temperature management of a device subject to temperature adjustment and suppressing the occurrence of temperature unevenness in blown-out temperature during a cooling operation. [Solution] A circulation pump P40 is arranged along a path on the downstream side of a confluence part b3 and along a path on the upstream side of a branch part a3, among circulation paths for a heat transfer medium in heat transfer medium flow paths 40a, 40b, 40c which are a second circulation circuit, and a flow rate adjustment valve V40 is arranged along a path on the upstream side of the confluence part b3 and along a path on the downstream side of the branch part a3, among the circulation paths for the heat transfer medium in the heat transfer medium flow paths 40a, 40b, 40c which are the second circulation circuit.
[Problem] To provide a vehicle air conditioning device in which a malfunction caused by insufficient circulation of a refrigerant can be solved. [Solution] A refrigerant circuit 10 is provided with a bypass passage that bypasses a high-temperature-side heat exchanger 12 and merges with passages on the downstream side of a passage through which a refrigerant flows to a first low-temperature-side heat exchanger 14 and a passage through which the refrigerant flows to a second low-temperature-side heat exchanger 16. The refrigerant circuit 10 can execute a hot-gas operation in which a portion of the refrigerant discharged by the compressor 11 is caused to flow to the bypass passage and the remaining refrigerant that does not flow to the bypass passage is caused to flow to either of the first evaporator and the second evaporator, and a switching mode in which the refrigerant is also caused to flow to the other of the first low-temperature-side heat exchanger 14 or the second low-temperature-side heat exchanger 16 when the hot-gas operation is being executed.
[Problem] To provide a power conversion apparatus with which it is possible to also improve responsiveness while stably controlling the secondary-side voltage of a GND common-type dual inverter, and to drive a motor having a winding with an open-end structure. [Solution] A primary-side inverter is connected to a DC power supply, a secondary-side inverter is connected to a capacitor, a negative-side power supply line of the primary-side inverter and the secondary-side inverter is shared, and a control device 6 that controls a secondary-side voltage which is the charging voltage of the capacitor is provided. The control device 6 has a secondary-side voltage control system 23 that generates a zero-phase voltage command value for applying a zero-phase current that is required for controlling the secondary-side voltage to a secondary-side voltage command value. The secondary-side voltage control system 23 has a feedforward control unit that outputs a feedforward control variable for the zero-phase voltage command value on the basis of the secondary-side voltage command value and the primary-side voltage.
H02M 7/493 - 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 the static converters being arranged for operation in parallel
B60L 9/18 - Electric propulsion with power supply external to the vehicle using AC induction motors fed from DC supply lines
H02P 25/22 - Multiple windingsWindings for more than three phases
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
[Problem] To reduce the number of connectors for electric connection to the outside in an electric compressor and to suppress a decrease in the shape stability of the connectors accompanying the reduction in the connectors. [Solution] In an electric compressor 1, a connector 20 attached to a connector mounting part 10 on the outer surface of an inverter casing 6 is provided for supplying high voltage power and low voltage power to an inverter 5. The connector 20 includes a connector housing 23 made of resin, and a metal plate 30 having a plurality of fastening holes 33 is fixed to the connector housing 23 by insert molding. The connector 20 is fixed to the connector mounting part 10 by fastening a bolt member 40 penetrating a bottom wall part 61 of the inverter casing 6 from the inside of the inverter casing 6 to each of the plurality of fastening holes 33 of the metal plate 30.
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
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
[Problem] To provide a heat management system capable of preventing wasteful energy consumption and damage to individual components. [Solution] A heat management system comprising: a heat medium circuit 60 which has a heat medium heating device 83 as a heating means for heating a heat medium, and in which a heat medium for exchanging heat with a battery serving as a temperature adjustment object circulates; and a control device 200, wherein the control device 200 can execute a freezing prevention operation for preventing the heat medium from freezing by heating the heat medium using the heat medium heating device 83, and can set, on the basis of the concentration of the heat medium, a heat medium temperature threshold value for determining whether to execute the freezing prevention operation.
[Problem] To provide a vehicle air conditioning device capable of preventing defects. [Solution] A vehicle air conditioning device 1 comprises: a refrigerant circuit 10 including an accumulator 15 having a heat exchange unit for exchanging heat with an internal refrigerant; a low pressure-side refrigerant pressure sensor 240a serving as a pressure sensor for detecting pressure on a downstream side of the accumulator 15; and a control device 200. The control device 200 has an accumulator failure detection mode for detecting a failure of the heat exchange unit on the basis of the pressure detected by the low pressure-side refrigerant pressure sensor 240a.
[Problem] To address the problem of improving a PWM signal that controls a heater, reducing noise generated from the heater due to the PWM signal, and suppressing breakage of a switching element. [Solution] A heat medium heating device for a vehicle is provided with a heater for electrically heating a heat medium and a control unit for controlling the heater. The heat medium heating device for a vehicle is characterized in that: the control unit generates a signal wave with a fundamental frequency lower than a prescribed range and controls a current flowing in the heater, on the basis of the signal wave with the fundamental frequency; the signal wave is formed through repetition of the periods of the duty ratio of a prescribed PWM signal, in the following order of a period in which the duty ratio is greater than 0% to less than 100%, a period in which the duty ratio is 100%, a period in which the duty ratio is greater than 0% to less than 100%, and a period in which the duty ratio is 0%; and a switching frequency of the PWM signal is higher than a prescribed range.
[Problem] To provide a vehicular air conditioner in which compressor failure can be prevented while also keeping an accumulator from being bulky. [Solution] A low-temperature–side heat exchanger 14 or outdoor heat exchanger 17 that does not actively perform heat exchange is used as a storage part for storing surplus refrigerant generated in a refrigerant circuit 10. A storage mode is provided to store surplus refrigerant in the storage part when surplus refrigerant is generated in an operation mode of the refrigerant circuit 10. If a refrigerant shortage is detected after termination of the storage mode, a flow path on/off valve 20d on the downstream side of the low-temperature–side heat exchanger 14 acting as the storage part or a flow path on/off valve 20e on the downstream side of the outdoor heat exchanger 17 acting as the storage part is opened.
[Problem] To provide a heating medium heating device having a cartridge-type heater in such a manner that a more compact device can be achieved. [Solution] A heating medium heating device 10 includes: a main part 12; a heating medium channel 15 provided inside the main part 12; a heater 16 supported inside the channel 15; a control board 17 that controls the heater 16; and a cover part 13 which covers the control board 17 by means of a first lateral surface 131, a second lateral surface 132 and a third lateral surface 133 disposed opposite each other, and a top surface 134, and which is secured to the main part 13 by a securing part 20 provided at an outer peripheral end part. The securing part 20 is disposed in a plane inclined with respect to a reference plane parallel to the direction of extension direction of the heater 16, and the first lateral surface 131 is erected so that the angle formed thereby with the reference plane is an obtuse angle.
B60H 1/22 - Heating, cooling or ventilating devices the heat being derived otherwise than from the propulsion plant
F24H 1/10 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
[Problem] To suppress frost formation or to remove frost without stopping heating in a vehicular air conditioner. [Solution] A vehicular air conditioner 1 comprises: a refrigerant circuit 10 including a compressor 11 that compresses a refrigerant, an indoor condenser 12 configured such that the refrigerant flows therethrough to heat air for heating a cabin interior, a bypass channel 231 configured to carry a flow of the refrigerant while bypassing the indoor condenser 12, and an outdoor heat exchanger 14 configured such that the refrigerant flows therethrough to exchange heat with air outside the cabin; and a control device 80 configured to control the operation of the refrigerant circuit 10. The control device 80 is configured to cause, when it is determined that there is a possibility of frost formation in the outdoor heat exchanger 14, execution of a heating and defrosting operation to direct a flow of the refrigerant that has been compressed by the compressor 11 to the bypass channel 231 and the indoor condenser 12, and to use the indoor condenser 12 to perform heating while also defrosting the outdoor heat exchanger 14.
[Problem] To provide a vibration-resistant structure for an electronic component, said vibration-resistant structure improving the vibration resistance and productivity of the electronic component. [Solution] A vibration-resistant structure for a capacitor 26 having a lead part 26A connected to a control board 21 is characterized in that the capacitor 26 having relatively low vibration resistance and a coil 27 having relatively higher vibration resistance than the capacitor 26 are adjacently mounted on the control board 21, and a joint member 54 for joining the coil 27 and a part of the capacitor 26 on the side opposite to the control board 21.
In a scroll compressor with a first line VL passing through a center line CL0 of a rotary shaft 30 and a center line CL2 of an eccentric bushing 72, and with a second line HL passing through the line CL0 and being orthogonal to the line VL, a center of gravity G1 of a bushing balancer 721 integral with the bushing 72 is located opposite to the line CL2 across the line HL and opposite to a center line CL1 of an eccentric pin 71 across the line VL, while a center of gravity G2 of a shaft balancer 31 integral with the shaft 30 is located opposite to the line CL2 across the line HL, and on the same side as the line CL1 relative to the line VL.
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 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
[Problem] To provide a motor drive device capable of changing the magnetization state of a variable magnetic force magnet without using a switching element having a large current rating and without adding a switching element. [Solution] A motor 3 comprises a variable magnetic force magnet and a magnetization winding 9 for magnetizing the variable magnetic force magnet. One end of the magnetization winding 9 is electrically or magnetically connected to the connection points of upper and lower arm switching elements 18A-18F of all phases. A control device 2 for a motor drive device 1 is provided with a magnetization control unit that causes magnetization current to flow through the magnetization winding 9 by creating a period in which the upper arm switching elements 18A-18C of all phases or the lower arm switching elements 18D-18F of all phases are simultaneously turned on.
H02P 21/22 - Current control, e.g. using a current control loop
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
[Problem] To provide a heat exchanger which makes it possible to reduce positional displacement occurring at an end (at a connection with an inlet/outlet pipe) of a side tank during assembly or brazing. [Solution] A heat exchanger 1 comprises: a core part 10 in which tubes 100 extending in a first direction are integrated and disposed in a second direction; a side plate 13A disposed at an end of the core part 10 in the second direction; and a side tank 60 disposed on the side opposite to the core part 10 across the side plate 13A in the second direction. A protruding site 68 that abuts on the side plate 13A is provided at a portion, of the surface of the side tank 60, that faces the side plate 13A.
B60H 1/00 - Heating, cooling or ventilating devices
B60H 1/08 - Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
[Problem] To provide a motor capable of flowing a large amount of magnetic flux generated by a winding of a stator to a rotor while suppressing leakage magnetic flux of a permanent magnet. [Solution] A rotor 20 having a rotor core 30 and permanent magnets 80 each forming one of a plurality of magnetic poles is provided. In the rotor core 30, a space part 90 formed between two adjacent magnetic poles among the plurality of magnetic poles, and a projection part 91 projecting radially outward from between two adjacent magnetic poles toward the space part 90 are formed.
[Problem] To perform pre-air conditioning such that an occupant is highly satisfied. [Solution] A vehicle air-conditioning device 1 comprises an air conditioner 30 capable of adjusting the temperature for each section within a vehicle, and a control device 40 configured to control the operation of the air conditioner 30. The control device 40 receives an instruction for pre-air conditioning for performing air conditioning before an occupant enters the vehicle 10. Upon receiving an instruction for pre-air conditioning, the control device 40: acquires information pertaining to air conditioning settings (S2); acquires information pertaining to the probability of usage of each section (S3); corrects the air conditioning settings in accordance with the usage probability, and determines post-correction settings that do not stop the air conditioning (S4); and controls the operation of the air conditioner 30 on the basis of the post-correction settings (S5).
[Problem] To provide a vehicle air conditioning device having excellent arrangement of each component in a refrigerant circuit. [Solution] This vehicle air conditioning device 1 comprises: a compressor 11 that compresses a refrigerant; an expansion valve 13 that decompresses the refrigerant; an indoor condenser 12, an indoor evaporator 15, or an outdoor heat exchanger 14; and a manifold 60 that has a flow path through which the refrigerant flows. The manifold 60 includes a high-temperature section 61 that includes a portion of the flow path for the high-temperature refrigerant discharged from the compressor 11, and a low-temperature section 63 that includes a portion of the flow path for the low-temperature refrigerant that has been decompressed by the expansion valve 13. The manifold 60 has a structure for suppressing heat transfer between the high-temperature section 61 and the low-temperature section 63. The manifold 60 includes: a first surface 65 provided with an opening configured so that a pipe to be connected to the indoor condenser 12, the indoor evaporator 15, or the outdoor heat exchanger 14 is attached; and a second surface 66 that is substantially orthogonal to the first surface 65 and is provided with an opening configured so that a pipe through which the refrigerant discharged from the compressor 11 flows is attached.
