An electric valve control device inputs pulses to a stepping motor to rotate a rotor in a second direction; inputs pulses to the stepping motor to rotate the rotor in a first direction when the electric valve is in a second-direction-rotation restricted state; obtains the number of pulses (an input number (Xi)) input to the stepping motor from the second-direction-rotation restricted state to a first-direction-rotation restricted state when the electric valve is in the first-direction-rotation restricted state while the rotor rotates in the first direction; determines that the rotor can rotate normally when the input number (Xi) is greater than or equal to a design number (Xd) and is smaller than or equal to an upper limit number (Xu); and determines that the rotor cannot rotate normally when the input number (Xi) is smaller than the design number (Xd) or is greater than the upper limit number (Xu).
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F25B 41/35 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
Provided is a motorized valve which is relatively inexpensive and is stably usable for a long time. The motorized valve comprises a valve main body which is provided with a valve seat, a valve chamber, and an orifice passage, a valve shaft which is rotationally driven by a motor and is displaced in the axial direction, a valve holder which is held by the valve shaft, a first valve body which is fixed to the valve holder and is provided with a through hole, a second valve body which is disposed between the valve shaft and the first valve body, an elastic body which biases the second valve body in a direction away from the first valve body, and a seal holder which is provided with a holder base that is disposed inside the valve main body, wherein sealing is performed between the outer periphery of the holder base and the inner periphery of the valve main body, an annular sealing body is disposed between the inner periphery of the holder base and the outer periphery of the valve holder, the orifice passage and the inner space of the valve main body can communicate with each other via the through hole in a state where the first valve body is seated on the valve seat inside the valve chamber, and the through hole is closed when the second valve body abuts on the first valve body.
An electric valve 11 includes: a valve body 12 having a valve chamber 13; a first flow passage 14 communicating with the valve chamber; a second flow passage 15 communicating with the valve chamber; an orifice 16 provided between the first flow passage and the second flow passage; a valve body 18 for changing the opening of the orifice by moving forward/backward relative to the orifice; a rotor 24 constituting an electric motor 51 for driving the valve body; a gear device 22 for decelerating rotation of the rotor; an output shaft 36 for outputting rotation decelerated by the gear device; a transmission mechanism 43 for converting rotation of the output shaft into linear motion for transmission to the valve body; a cylindrical gear case 23 storing the gear device; and a guide part 37 rotatably supporting the output shaft. The output shaft, the guide part, and the gear device are supported by the gear case.
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
4.
ELECTRICALLY DRIVEN VALVE AND METHOD FOR MANUFACTURING ELECTRICALLY DRIVEN VALVE
The present invention provides a method for manufacturing an electrically driven valve comprising a cylindrical valve body 17 having a valve chamber therein, a valve seat member 20 that has a valve seat 23 and that is joined to the bottom surface of the valve body, a first flow passage pipe 18 joined to a side surface of the valve body so as to communicate with the valve chamber, a second flow passage pipe 19 joined to the valve body bottom surface via a valve seat member so as to communicate with the valve chamber, a valve body 24 that moves toward and away from the valve seat, and a drive part that drives the valve body, said method comprising a valve body assembly manufacturing step for manufacturing a valve body assembly 14 in which the valve body and the first flow passage pipe have been joined (e.g., brazed), a valve seat assembly manufacturing step for manufacturing a valve seat assembly 15 in which the valve seat member and the second flow passage pipe have been joined (e.g., brazed), and a flow passage formation part manufacturing step for joining (e.g., welding) the valve body included in the valve body assembly and the valve seat member included in the valve seat assembly subsequent to the valve body assembly manufacturing step and the valve seat assembly manufacturing step.
Provided is an electric valve that can be made compact and lightweight while improving the degree of freedom of opening/closing valve control. This electric valve includes: a valve main body comprising a first flow passage into which a refrigerant is introduced, a second flow passage from which the refrigerant flows out, a third flow passage through which the refrigerant passes, and a valve seat formed between the first flow passage and the second flow passage; a valve shaft body comprising a valve body part that can be seated on the valve seat; a motor disposed in the valve body and positioned on the opposite side of the third flow passage to the valve seat; and a conversion mechanism that converts the rotation of a rotor of the motor into linear motion and transmits the linear motion to the valve shaft body.
In an electrically operated valve including a valve main body having a valve chamber communicated with an inflow passage and an outflow passage for the refrigerant, a valve body changing a flow rate of the refrigerant by moving forward and backward between a valve close state and a valve open state, an electric motor driving the valve body, a control board mounting an electronic component controlling the electric motor thereon, a board storage portion storing the control board in a sealed state, an external portion connecting terminal electrically connecting to the external portion, and a connector portion sealed by supporting the external portion connecting terminal to the internal portion and fitting to a mating connector, a communicating passage communicating the board storage portion and the connector portion is provided, and the board storage portion comes to the sealed state when the mating connector is fitted to the connector portion.
[Problem] To provide an electric valve control device capable of determining at an appropriate timing whether or not the rotation of the rotor of a stepping motor is restricted, an electric valve device having the electric valve control device, and an electric valve state determination method. [Solution] A drive current for rotating a rotor 41, the drive current being controlled by a pulse width modulation method, is supplied to a coil of a stator 60 of a stepping motor 66. A low-pass filter of an electric valve control device 70 has a cutoff frequency lower than a pulse width modulation frequency used in the pulse width modulation method and allows a voltage component having a frequency lower than the cutoff frequency of a voltage generated in the coil to pass. A computer of the electric valve control device 70 determines, using a voltage component that has passed through the low-pass filter, whether or not an electric valve 5 is in a rotation-restricted state in which the rotation of the rotor 41 is restricted.
The present invention provides an electric valve and an electric valve unit capable of securing versatility and enhancing scalability of control. In this electric valve in which a detection signal can be input from a sensor for detecting at least one of pressure and temperature of a fluid entering the electric valve or discharged from the electric valve, the sensor has: flexible wiring capable of transmitting a detection signal; a second terminal connected to the wiring; and a second connector connectable to a first connector of the electric valve. When the first connector and the second connector are connected to each other, a first terminal of the electric valve and the second terminal are engaged with each other so as to be able to transmit a signal. A control unit of the electric valve acquires a detection signal from the sensor via the first terminal and the second terminal, and generates a drive signal for driving a motor of the electric valve on the basis of the detection signal.
[Problem] To provide an electric valve which is capable of more accurately detecting the position of a valve element and is easy to assemble. [Solution] An electric valve 1 includes: a valve body 10; a can 30; a drive shaft 70; a planetary gear mechanism 60 which transmits the rotation of a rotor 51 to the drive shaft 70; a valve body 40 which is disposed in a valve chamber 13 of the valve body 10 and of which the vertical position changes according to the rotation of the drive shaft 70; and a magnetic sensor 85 disposed outside the can 30. The electric valve 1 also includes: a drive magnet 76 attached to the drive shaft 70 and rotating together with the drive shaft 70; and an annular driven magnet 77 surrounding the drive magnet 76. The driven magnet 77 rotates around the drive shaft 70 as the drive magnet 76 rotates. The magnetic sensor 85 detects the magnetism of the driven magnet 77.
[Problem] To provide an electric valve and a valve device which can be disposed in a small space. [Solution] An electric valve 1 includes: a valve body 10 having a valve chamber 12 and a valve port 13; a cylindrical rotor case 30 attached to the valve body 10; a cylindrical rotor 40 disposed inside the rotor case 30; a valve body 20 moving according to rotation of the rotor 40; and a stator 90 disposed inside the rotor 40 and forming a stepper motor 98 together with the rotor 40.
Provided is an expansion valve with which it is possible for a valve closed state to be maintained at will by utilizing the fluid pressure of a refrigeration cycle. The expansion valve comprises: a valve body having a valve chamber and a valve seat; a power element that is provided in the valve body and that has a displaceable displacement portion; a valve needle disposed inside the valve chamber; a first urging device that urges the valve needle toward the valve seat; an operating rod that is provided in the valve body, is disposed between the displacement portion and the valve needle, and drives the valve needle in response to the displacement of the displacement portion; a syringe member that is provided in the valve body, internally accommodates a portion of the operating rod in such a way as to be capable of moving, and forms, between the displacement portion and the syringe member, a cylinder chamber that can expand and contract in the direction of movement of the valve needle; a movement restricting portion that restricts movement of the syringe member toward the valve chamber side; and a supply portion that supplies fluid in the valve chamber or fluid on an upstream side of the valve chamber to the cylinder chamber.
F25B 41/33 - Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant
F16K 31/68 - Operating meansReleasing devices responsive to temperature variation actuated by fluid pressure or volumetric variation in a confined chamber
F25B 41/335 - Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant via diaphragms
F25B 41/345 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
An electric valve includes: a valve body 12 having a valve chamber 13 and an orifice 16 therein and having a first flow passage 14 and a second flow passage 15 communicating with the valve chamber; a valve body 17 that moves forward and backward relative to the orifice and changes a flow rate of the fluid; a bottomed, lidless can 19 that communicates with the valve chamber and houses a rotor 27 of an electric motor 21 that drives the valve body; and a bearing member 29 that is located at an upper part of the rotor inside the can and that rotatably supports the rotor. The bearing member has a plurality of joining parts that are in contact with an inner surface of a top plate part 19d of the can and are joined to the inner surface.
[Problem] To provide: an electric valve that can suppress a decrease in durability; and a refrigeration cycle device that has the electric valve and uses a natural refrigerant. [Solution] An electric valve 1 is incorporated in a refrigeration cycle device that uses a natural refrigerant. The electric valve 1 comprises: a valve body 30; a drive mechanism 40 for driving the valve body 30; and a can 20 in which the drive mechanism 40 is disposed. The natural refrigerant is introduced into the can 20. The drive mechanism 40 has a drive shaft 41 having an external thread 42t, and a bearing member 45 having an internal thread 45t with which the external thread 42t is screwed together. A fluorine grease is applied on the drive shaft 41 and the bearing member 45.
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
F25B 41/35 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
This electric valve is provided with: a valve body 12 that has a valve chamber 13 therein, and that also has a first flow path hole 14 communicating with the valve chamber at a bottom part 12a and has a second flow path hole 15 communicating with the valve chamber; a valve element 17 that is provided so as to be able to advance and retreat with respect to a valve seat 16 formed at a valve chamber side end part of the first flow path hole; a rotor 23 that is a component of an electric motor 21 for driving the valve element; and a transmission mechanism 34 that converts rotation of the rotor into linear motion and transmits the motion to the valve element. The valve is provided with: a strainer 19 that has a net-like strainer body part 19a through which a fluid can pass; and a support part 19b that supports the strainer body part. The support part is fixed to the valve body so that the fluid passing through the first flow path hole passes through the strainer body part.
Provided are an accumulator with which it is possible to increase an amount of refrigerant that passes through the accumulator, and a method for manufacturing the same. In the accumulator, an outflow pipe includes a small cylindrical portion which is inserted into and fixed to a refrigerant outflow hole, a large cylindrical portion which is disposed within a body portion and which has a cross-sectional area greater than that of the small cylindrical portion, and a tapered cylindrical portion connecting the small cylindrical portion and the large cylindrical portion, wherein: an inner circumferential surface of the outflow pipe has, along a refrigerant flow direction, a large inner circumferential surface, an intermediate inner circumferential surface connected to the large inner circumferential surface, and a small inner circumferential surface which is connected to the intermediate inner circumferential surface and which has a cross-sectional area smaller than the cross-sectional area of the large inner circumferential surface; the intermediate inner circumferential surface has a shape having a cross-sectional area that gradually decreases toward the small inner circumferential surface side; a gas-liquid separating member includes a main body that has a communicating portion and that faces a header, and an extension portion that extends from the main body to the tapered cylindrical portion; and the extension portion is sandwiched between the header and the outflow pipe in a state in which the extension part is in contact with the tapered cylindrical portion.
Provided are a method for manufacturing a drainage pump, obtained by connecting a rotor member and a rotating blade, and the drainage pump, with which it is possible to reduce the noise of the drainage pump. The method for manufacturing a drainage pump, comprising a rotor that is capable of rotating relative to a housing, and a rotating blade connected to the rotor, involves: forming a first mark corresponding to a positional displacement of a center of gravity of the rotor with respect to a rotational axis on the rotor, spaced apart from the rotational axis; forming a second mark corresponding to a positional displacement of a center of gravity of the rotating blade with respect to the rotational axis on the rotating blade, spaced apart from the rotational axis; and connecting the rotor and the rotating blade such that the first mark and the second mark have a predetermined positional relationship around the rotational axis, where the predetermined positional relationship is a positional relationship whereby the position, relative to the rotational axis, of a center of gravity of an integrated object obtained by assembling the rotor and the rotating blade together is closer to the rotational axis than the positions of the centers of gravity of each of the rotor and the rotating blade.
A flow passage switching valve 10 is capable of supplying a fluid to at least two elements that use the fluid as a thermal transfer medium, and has a parallel mode for individually supplying the fluid to the elements, and a series mode for supplying the fluid to at least two elements in series.
F16K 11/00 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid
In an electrically operated valve including a valve main body having a valve chamber communicating with an inflow passage for refrigerant and an outflow passage for refrigerant, a valve body moving forward and backward for a valve seat formed within the valve chamber and changing a refrigerant flow rate, an electric motor driving the valve body, a board controlling the electric motor, and a board storage portion including a case storing the board, the board has a fixing hole fixing the board within the case, the case has a support projection fixed into the fixing hole and supporting the board within the case, and the support projection is integrally formed with the case portion. The support projection is preferably provided with a step portion and the board is preferably held by the step portion and a pressing projection disposed in a back surface of a lid occluding the case.
[Problem] To provide a motorized valve control device capable of reducing power consumption of a motorized valve, a motorized valve device having the motorized valve control device, and a motorized valve control method. [Solution] A motorized valve control device 70 acquires a voltage generated in a stator 60 by rotation of a rotor 41, and determines a relationship between a rotation load and a magnitude of a drive current supplied to the stator 60 on the basis of the voltage. The motorized valve control device 70 maintains the magnitude of the drive current when it is determined that the magnitude of the drive current is appropriate for the rotation load, reduces the magnitude of the drive current when it is determined that the magnitude of the drive current is large with respect to the rotation load, and increases the magnitude of the drive current when it is determined that the magnitude of the drive current is small with respect to the rotation load.
In an electrically operated valve including a valve main body having a valve chamber communicated with an inflow passage and an outflow passage for the refrigerant, a valve body changing a flow rate of the refrigerant by moving forward and backward between a valve close state and a valve open state, an electric motor driving the valve body, a control board mounting an electronic component controlling the electric motor thereon, a board storage portion storing the control board in a sealed state, an external portion connecting terminal electrically connecting to the external portion, and a connector portion sealed by supporting the external portion connecting terminal to the internal portion and fitting to a mating connector, a communicating passage communicating the board storage portion and the connector portion is provided, and the board storage portion comes to the sealed state when the mating connector is fitted to the connector portion.
A valve device 11 comprising: a valve main body 12 having a valve chamber 13 in an interior thereof; a valve body 21 that has flow path space 22 in an interior thereof and that is rotationally driven in the valve chamber and changes a flow quantity of a fluid; a first flow path hole 14 that is formed in the valve main body and that communicates with the flow path space and allows the passage of the fluid; a second flow path hole 15 that is formed in the valve main body, whose communication state with the flow path space is changed via the rotational displacement position of the valve body, and that allows the passage of the fluid when communicating with the flow path space; and a transmission mechanism including a valve body driving shaft 31 that transmits, to the valve body, driving force for rotating the valve body. The rotation axis of the valve body and the rotation axis of the valve body driving shaft are orthogonal with each other.
F16K 31/53 - Mechanical actuating means with toothed gearing
F16K 5/04 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfacesPackings therefor
This flow path switching valve has a valve unit equipped with: a valve main body in which a first intake/discharge port and a second intake/discharge port are formed in a wall surface of a valve chamber, and a third intake/discharge port is formed in a floor surface of the valve chamber; a valve element positioned so as to be capable of rotating inside the valve chamber; a first flow path which is connected to the first intake/discharge port; a second flow path which is connected to the second intake/discharge port and is arranged in parallel with the first flow path while sandwiching the valve main body therebetween; and a third flow path which is connected to the third intake/discharge port and is open on the side thereof opposite the third intake/discharge port. The flow path switching valve also has a rotation drive unit for rotating the valve element. Therein, another valve unit overlaps and is connected to one valve unit on the side thereof opposite the rotation drive unit, and the range of the opening which corresponds to the first and second intake/discharge ports of the valve element of the one valve unit differ from the range of the opening which corresponds to the first and second intake/discharge ports of the valve element of the other valve unit.
F16K 11/08 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks
Provided is a valve device including: a plurality of blocks each having a first surface in which an inflow port for a fluid is formed and a second surface in which an outflow port, from which the fluid that has flowed in from the inflow port flows out, is formed and that is provided on a side different from the first surface; a control unit that is provided on at least one of the blocks, that is provided between the inflow port and the outflow port, and that controls the flow of the fluid; and an inflow side passage with which the inflow port and the control unit are communicated with each other and an outflow side passage with which the outflow port and the control unit are communicated with each other. The dimension from lower surfaces of the blocks to the inflow port and the dimension from the lower surfaces thereof to the outflow port are set the same.
F16K 27/00 - Construction of housingsUse of materials therefor
F16K 11/22 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
Provided is a motor operated value having a short switching time of switching the state of the motor operated valve while having the power required for moving a valve body. The motor operated valve (1) comprises: a drive shaft (70) having male threads (72c); a guide member (68) having female threads (68c) with which the male threads (72c) engage; and a planetary gear mechanism (60) that reduces a speed of rotation of a rotor (51) and transmits the speed to the drive shaft (70). The motor operated valve (1) satisfies formula [1] and formula [2], where L is a lead of the male threads and K is the reduction ratio of the planetary gear mechanism (60). [1] 0.04K ≤ L ≤ 0.10K [2] 30 ≤ K ≤ 100
[Problem] To provide a motorized valve control device, a motorized valve device having the motorized valve control device, and a motorized valve control method that make it possible to shorten the time taken for a motorized-valve initialization operation and to suppress noise. [Solution] A motorized valve 5 includes a stepping motor 66 having a rotor 41 and a stator 60. The stator 60 is connected to a current circuit having a switch element. A motorized valve control device 70 acquires an OFF time of the switch element when a drive current causing the rotor 41 to rotate in a first direction is supplied to the stator 60. The motorized valve control device 70 then determines, on the basis of the OFF time, whether the motorized valve 5 is in a first rotation-regulated state in which the rotation of the rotor 41 in the first direction is regulated.
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
Provided is a flow passage switching valve comprising: a valve unit including a valve main body having a first inlet/outlet port and a second inlet/outlet port formed in a wall surface of a valve chamber and a third inlet/outlet port formed in a bottom surface of the valve chamber, a valve element rotationally disposed inside the valve chamber, a first port communicating with the first inlet/outlet port, a second port communicating with the second inlet/outlet port, and a third port communicating with the third inlet/outlet port; and a rotational drive unit coupled to the valve unit to rotate the valve element. Coupling is achieved by connecting, to the first port and the second port of the valve unit, the first port and the second port of another valve unit, respectively.
F16K 11/076 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with pivoted closure members with sealing faces shaped as surfaces of solids of revolution
27.
MOTORIZED VALVE CONTROL DEVICE, MOTORIZED VALVE DEVICE, AND METHOD FOR CONTROLLING MOTORIZED VALVE
Provided are a motorized valve control device with which the time required for an initialization operation of a motorized valve can be shortened to minimize noise, a motorized valve device having a motorized valve control device, and a method for controlling a motorized valve. A motorized valve control device (70) according to the present invention inputs a second preparatory number of pulses to a stepping motor (66) to cause a rotor (41) to rotate in a second direction (second preparatory operation), and inputs a first preparatory number of pulses to the stepping motor (66) to cause the rotor to rotate in a first direction (first preparatory operation). The motorized valve control device (70) acquires a voltage generated in a stator due to the rotation of the rotor (41) in the first direction. The motorized valve control device (70) sets the waveform of the voltage acquired during the first preparatory operation as a reference waveform of the voltage. On the basis of the difference between the waveform of the voltage and the reference waveform of the voltage, the motorized valve control device (70) assesses whether a motorized valve (5) is in a rotation-restricted state.
An electric valve according to the present invention comprises: a valve body 12 that has a valve chamber 13 that communicates with an inflow passage 15 and an outflow passage 16; a valve element 17 that moves back and forth relative to a valve seat 14; an electric motor 41 that has a rotor 43 and a stator 42 that drive the valve element; a can 40 that accommodates the rotor on the inside and has the stator arranged on the outside; a connection member 21 that connects the valve body and the can; and a seal member 30 that extends so as to surround the connection member and is pressed between an outer circumferential surface of the connection member and an inner circumferential surface of a housing 56 of the electric motor. The connection member is press-molded and has a cylindrical part 22. A rigid component 31 is fitted into the cylindrical part. The cylindrical part, the rigid component, and the seal member are arranged so as to coincide with each other in the direction of the axis A of the electric valve.
An electrically driven valve includes a valve element configured to move to a direction approaching a valve seat or to a direction separating therefrom, a stepping motor configured to be operated by entering a drive pulse, a driving mechanism configured to drive the valve element by a driving force output from the stepping motor, a nonvolatile storage unit configured to store an amount of hysteresis, and a control unit configured to drive the stepping motor according to an operation instruction information entered from an exterior.
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F25B 41/35 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
30.
STATOR UNIT, ELECTRIC VALVE, AND MANUFACTURING METHOD FOR STATOR UNIT
A stator unit includes an A-phase yoke, a B-phase yoke, a first resin portion, and a second resin portion. The A-phase yoke and the B-phase yoke include pole teeth. The first resin portion includes an A-phase yoke filling part in an inner space of the A-phase yoke and a B-phase yoke filling part in an inner space of the B-phase yoke. The second resin portion includes a sealing part between the pole teeth. An A-phase bobbin separates the A-phase yoke filling part from the sealing part. A B-phase bobbin separates the B-phase yoke filling part from the sealing part.
H02K 3/52 - Fastening salient pole windings or connections thereto
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B29K 25/00 - Use of polymers of vinyl-aromatic compounds as moulding material
B29K 67/00 - Use of polyesters as moulding material
B29K 71/00 - Use of polyethers as moulding material
B29K 77/00 - Use of polyamides, e.g. polyesteramides, as moulding material
B29K 81/00 - Use of polymers having sulfur, with or without nitrogen, oxygen or carbon only, in the main chain, as moulding material
An electric valve control device inputs a pulse to a stepping motor to rotate a rotor in a first direction. The electric valve control device obtains a voltage generated in a stator by rotation of the rotor. The electric valve control device determines whether an electric valve is in a first-rotation restricted state where the rotation of the rotor in the first direction is restricted, based on a degree of difference between a waveform of the voltage and a reference waveform of the voltage.
This electrically operated valve comprises a first valve body 41 having a first space 42 in the interior thereof, a second valve body 51 having a second space 52 in the interior thereof, and a transmission mechanism that transmits driving force to the valve bodies. A valve main body 13 has: a first flow path hole 21 and a second flow path hole 22 for which communication states with the first space are changed by the rotation position of the first valve body; a connecting flow path 25 for which the communication state with the second space is changed by the rotation position of the second valve body, the connection flow path communicating with the first space, and allowing a fluid to pass through from the second space to the first space with the second valve body at first and second rotation positions; a third flow path hole 23 for which the communication state with the second space is changed by the rotation position of the second valve body, the third flow path hole 23 allowing the fluid to flow out of the second space with the second valve body in a third rotation position; and a fourth flow path hole that allows the fluid to flow into the second space. The transmission mechanism includes a first shaft 61 that drives the first valve body, and a second shaft that drives the second valve body. The driving force of the second valve body is transmitted to the second shaft via the first shaft, and the valve bodies rotate in conjunction.
F16K 11/16 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle which only slides, or only turns, or only swings in one plane
F16K 11/087 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
F16K 31/53 - Mechanical actuating means with toothed gearing
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
Provided are an electric valve and an electric valve unit with which it is possible to obtain improved mountability and improved reliability while maintaining a small size. The electric valve comprises: a valve body including a valve chamber, an end opening that communicates with the valve chamber and is open in an axial direction, and a side opening that communicates with the valve chamber and is open in a direction intersecting with the axis; a seat member with at least a portion thereof disposed within the end opening and also provided with a valve seat on the valve chamber side; a valve element that approaches or separates from the valve seat; and a conversion mechanism for converting a rotational movement of a rotor into a linear movement of the valve element. The valve body is provided with a contact surface that restricts a movement of the seat member toward the valve chamber within the end opening.
This electrically operated valve comprises: a feed screw mechanism for causing a valve body to advance and retreat in an axial direction relative to a valve seat; a rotor that is rotatably supported in an inner circumferential portion of a can and is rotationally driven by a stator disposed in an outer circumferential portion of the can; a deceleration device that has a plurality of planetary gear mechanisms disposed in the axial direction, that transmits torque through the plurality of planetary gear mechanisms from the farthest side of the feed screw mechanism toward the nearest side of the feed screw mechanism, and that thereby reduces the rotational speed of the rotor and transmits the foregoing to the feed screw mechanism; and a reduction means for reducing the pressure acting on the gears of a third planetary gear mechanism.
An electric-powered valve 10 comprises: a feed screw mechanism 24; a rotor 42 that is rotatably supported at an inner circumferential section of a can 48 and is rotationally driven by a stator 36 disposed at an outer circumferential section of the can 48; and a speed reducer 50 that has a plurality of planetary gear mechanisms 52 that are disposed side-by-side in the axial direction and whose fixed elements are all the same element, the speed reducer 50 transmitting torque in order from a first planetary gear mechanism 52A to a third planetary gear mechanism 52C, reducing the rotational speed of the rotor 42, and transmitting torque to the feed screw mechanism 24, and the speed reducer 50 being configured such that, from among the plurality of planetary gear mechanisms 52, the third planetary gear mechanism 52C and a second planetary gear mechanism 52B adjacent in the axial direction are separable.
Provided is an accumulator capable of holding a gas-liquid separating body and increasing an amount of refrigerant that passes through, while preventing an increase in the number of components. The accumulator comprises a body portion having an opening in at least one end, a header which has a refrigerant inflow hole and a refrigerant outflow hole and which blocks the opening in said one end of the body portion, a gas-liquid separating member disposed within the body portion and facing the refrigerant inflow hole and the refrigerant outflow hole, and an outflow pipe connected to the refrigerant outflow hole, wherein: the outflow pipe includes a small-diameter cylinder portion inserted into and fixed to the refrigerant outflow hole, and a large-diameter cylinder portion which has a larger diameter than the small-diameter cylinder portion and which is disposed within the body portion; the gas-liquid separating member is sandwiched between a stepped surface, which is an end surface of the large-diameter cylinder portion on the small-diameter cylinder portion side thereof, and the header; and the outflow pipe has a cylindrical inner circumferential surface formed within the small-diameter cylinder portion, and a tapered inner circumferential surface which is joined to the cylindrical inner circumferential surface and which contracts diametrically toward the refrigerant outflow hole.
A solenoid valve (100) comprises: a solenoid (70) on which a coil (70a) is wound; an attraction piece (80) disposed inside the solenoid; a plunger (50) that is attracted by the attraction piece when current is passed through the solenoid and that is connected to a valve shaft (valve body) (60); a pipe (51) that is provided inside the solenoid and that houses the plunger; and a housing (70c) which has a first support (91) overlaid on one end of the solenoid in the axial direction, and a second support (92) overlaid on the other end of the solenoid in the axial direction, and in which the first and second supports has formed therein first and second fitting holes (91a, 92b) to be inserted with a pipe, and the first fitting hole abuts the outer circumference of the pipe on one side in the radial direction.
Provided is an expansion valve that can ensure a valve closed state as needed, and can nevertheless suppress pressure loss. The expansion valve is provided with: a valve body having a valve chamber and a valve seat; a valve element disposed in the valve chamber; a power element that is provided in the valve body and generates a force to separate the valve element from the valve seat for valve opening; a first biasing device that biases the valve element toward the valve seat; an operation rod that is provided in the valve body and drives the valve element; a piston member that is provided between the power element and the operation rod and configures, together with the power element, a cylinder chamber which is extendable in the direction of movement of the valve element, the piston member transmitting the force generated from the power element to the operation rod; and a supply section that supplies a refrigerant in the valve chamber or a refrigerant upstream of the valve chamber to the cylinder chamber.
F25B 41/335 - Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant via diaphragms
F16K 31/68 - Operating meansReleasing devices responsive to temperature variation actuated by fluid pressure or volumetric variation in a confined chamber
A flow path switching valve includes: a valve main body having an inlet/outlet port being opened in a pair of a left first wall surface and a right first wall surface facing each other of a valve chamber formed inside; a valve body having a ball shape that is disposed in the valve chamber; an annular seat member disposed between the valve body and the inlet/outlet port and disposed between the left first wall surface and the right first wall surface of the valve chamber facing an outer peripheral portion; an O-ring that presses the seat member against the valve body; a rotary drive unit that rotates the valve body; and an inclined seal surface that is formed on the seat member, that is inclined at a constant angle θ with respect to an axis, and that is in contact with an outer peripheral surface of the valve body.
F16K 11/087 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
Provided is an accumulator that has a superior assembly property and that enables to ensure a function of a refrigeration cycle even when vibration is applied. The accumulator includes a body, a pipe arranged on an inner side of the body eccentrically with respect to the body, a retaining member arranged between the pipe and the body, and a bag configured to accommodate a desiccant, wherein the bag is retained by being in contact with the body and the retaining member at a position where a distance between an inner circumference surface of the body and an outer circumference surface of the pipe is greatest.
An electric valve includes a motor, a power transmission mechanism that converts rotational movement generated by the motor into axial movement of a valve body, a housing that accommodates at least a part of the power transmission mechanism and the motor, an external connector that is provided to the housing and enables power supply to the motor and communication with a control device connected via a network, and a control substrate that is provided in the housing, processes the communication and controls the motor, and has a connection position connected to an external connector-side terminal and a connection position connected to a motor-side terminal disposed on opposite sides to each other with respect to the axis of the motor.
Provided is an expansion valve that can ensure a valve closed condition at will, and nevertheless can minimize pressure loss. This expansion valve has: a valve body; a valve main body that has a valve chamber in which the valve body is positioned, a valve hole formed in the downstream side of the valve chamber, a valve seat formed around the valve hole, a low-pressure flow passage through which refrigerant of a lower pressure than in the valve chamber flows, said low-pressure flow passage being distanced from the valve chamber in the direction in which the valve body faces the valve seat in the valve chamber, and a communication hole formed between the valve chamber and the low-pressure flow passage and communicating the low-pressure flow passage and the valve hole; a first biasing device that biases the valve body toward the valve seat; an actuation rod that is positioned in the valve hole and the communication hole and drives the valve body; a power element that drives the actuation rod; a partitioning section that has at least a piston section, said piston section being provided to the actuation rod and being positioned in the communication hole, and partitions the interior of the communication hole into a valve chamber-side cylinder chamber and a communication chamber, said communication chamber being positioned on the low-pressure flow passage side and being in communication with the low-pressure flow passage; an inflow passage that is formed in the valve main body, and communicates the valve chamber and the cylinder chamber and introduces the refrigerant within the valve chamber into the cylinder chamber, or is in communication with the cylinder chamber and causes the refrigerant to flow into the cylinder chamber from further upstream than the valve chamber; and a first valve device that controls the flow of the refrigerant into the cylinder chamber via the inflow passage.
F16K 31/68 - Operating meansReleasing devices responsive to temperature variation actuated by fluid pressure or volumetric variation in a confined chamber
F25B 41/335 - Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant via diaphragms
43.
SOLENOID VALVE AND METHOD FOR ASSEMBLING SOLENOID VALVE
A solenoid valve (100) comprises: a cylindrical plunger (50) having a bottom (50a) in which a through-hole (50c) is formed; a valve shaft (60) that has a head part (62) and a shaft part (63), is slidably supported by the plunger along an axial direction, and opens and closes a valve seat (42), the head part being disposed inside the plunger, the shaft part being inserted into the through-hole and projecting from the bottom on the outside of the plunger toward the valve seat; and a first biasing member (52) having a valve closing spring part (52a) with one end contacting the bottom of the plunger, and the other end biasing, in a valve closing direction, the shaft part of the valve shaft projecting outside of the plunger.
Provided are a solenoid valve and an expansion valve with the solenoid valve that can ensure smooth flow of fluid when the valve is opened. The solenoid valve comprises: a solenoid valve chamber; a valve body having an inlet-side flow path communicating with the solenoid valve chamber, a recess, and an outlet-side flow path formed on a bottom surface of the recess; a valve hole connecting the outlet-side flow path and the solenoid valve chamber; a first valve part that is attached to the recess of the valve body by any one of press-fitting, gluing, screw-fixing, or snap-fitting; and a second valve part that is seated against the first valve part to cover the valve hole, and that is separated from the first valve part to open the valve hole. Materials of the first valve part and the second valve part have different Young's modulus values. A surface of the second valve part on the first valve part side is composed of a single member. When an end of the first valve part is projected toward the second valve part along an axial direction of the valve hole, a projected image thereof does not overlap with the valve body at least between the inlet-side flow path and the outlet-side flow path in the solenoid valve chamber.
F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
F16K 31/68 - Operating meansReleasing devices responsive to temperature variation actuated by fluid pressure or volumetric variation in a confined chamber
[Problem] To provide an electric valve and an electric valve device that can detect the rotation direction of a stepping motor. [Solution] A magnet rotor 31 of this electric valve 5 has: a drive rotor 311; and a detection rotor 312 coaxially connected to the drive rotor 311. The detection rotor 312 includes an outer circumferential surface which has a cylindrical shape and on which a plurality of detection magnetic poles dp1-dp6 are disposed in the circumferential direction. A magnetic sensor 91 of the electric valve 5 detects a magnetic field of the plurality of detection magnetic poles dp1-dp6. At least three detection magnetic poles among the plurality of detection magnetic poles dp1-dp6 have mutually different circumferential lengths.
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
H02K 37/14 - Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
In an electric valve, an upper surface of a main body portion of a valve body, a cylindrical portion of the valve body, and a flange member form a groove in an annular recess shape. A stator unit includes a tubular portion that surrounds the groove. A sealing member is disposed in the groove and held between the cylindrical portion of the valve body and the tubular portion of the sealing member.
F25B 41/35 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
Provided is an electrically operated valve 11 comprising: a valve body 13 having a valve chamber 14; a valve member 31 that has a flow path space 32 inside, and is rotationally driven in the valve chamber to switch a flow path of fluid; and a transmission mechanism including a drive shaft 41 that transmits a driving force for rotating the valve member to the valve member. The valve body includes: a first flow path hole 15 that communicates with the flow path space to allow the fluid to flow into the flow path space; a second flow path hole 16 of which the state of communication with the flow path space is changed depending on the position of rotational displacement of the valve member, and which communicates with the flow path space at a first rotational displacement position of the valve member to allow the fluid to flow out from the flow path space; and a third flow path hole 17 of which the state of communication with the flow path space is changed depending on the position of rotational displacement of the valve member, and which communicates with the flow path space at a second rotational displacement position of the valve member to allow the fluid to flow out from the flow path space. A rotation axis X of the valve member and a rotation axis Y of the drive shaft intersect with each other.
F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfacesPackings therefor
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
48.
VALVE DEVICE, EXPANSION VALVE, METHOD FOR MANUFACTURING VALVE DEVICE, AND METHOD FOR MANUFACTURING EXPANSION VALVE
Provided are a valve device, an expansion valve, a method for manufacturing a valve device, and a method for manufacturing an expansion valve with which manufacturing costs can be reduced without increasing the number of manufacturing processes. A valve device of a valve main body includes a base surface portion which is a flat surface that is formed by subjecting one side surface of the valve main body to a prescribed cutting process or grinding process, and to which an object to be fixed can be attached, and an adjacent portion adjacent to at least a portion of an edge of the base surface portion, wherein the adjacent portion is not subjected to the prescribed cutting process or grinding process, and has a shape that does not project relative to the base surface portion in a normal line direction of the base surface portion. By having such a valve main body, the amount of material that is cut and discarded during processing is reduced, and since burrs are not formed between the base surface portion and the adjacent portion, a process to remove burrs is not required, and there is thus no increase in the number of processes.
F16K 27/00 - Construction of housingsUse of materials therefor
F16K 31/68 - Operating meansReleasing devices responsive to temperature variation actuated by fluid pressure or volumetric variation in a confined chamber
This flow path switching valve has a valve unit comprising: a valve body having a first port and a second port formed in a valve chamber, and a third port formed on a bottom surface of the valve chamber; a first valve body disposed rotatably in the valve chamber, and in which a flow path is formed; a first flow path communicating with the first port; a second flow path provided along with the first flow path with the valve body interposed therebetween, and communicating with the second port; a branch part communicating with the third port and branching at least in two directions; a third flow path and a fourth flow path each connected to the branch part; and a second valve body disposed in the branch part and which rotates in conjunction with the first valve body. The communication state of the first port, the second port, and the third port is selectively switched through the first valve body, and the communication state of the third port, the third flow path, and the fourth flow path is switched by the second valve body.
F16K 11/056 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only lift valves with ball-shaped valve members
F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
The present invention provides a flow path switching valve comprising a plurality of valve units in each of which a connection state of a plurality of flow paths is changed by rotating a valve element provided in a valve chamber of a valve body, the flow path switching valve including: a gear shaft that rotates the valve element of one valve unit, a gear shaft that rotates the valve element of the other valve unit, a rotational drive unit for rotating the gear shafts, and a driving force distribution mechanism that distributes the rotational driving force of the rotational drive unit to the two gear shafts.
F16K 11/087 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
A stator unit includes a main circuit board parallel to an up-and-down direction, a sub circuit board at a right angle to the main circuit board, a magnetic sensor on the sub circuit board, and a housing including a sub circuit board space that is located adjacent to an inner space of the stator unit in which a can is disposed. The sub circuit board includes a first end connected to the main circuit board via a circuit board terminal and a second end located near the inner space in the sub circuit board space. The magnetic sensor is located closer to the inner space than the circuit board terminal is.
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
H02K 11/33 - Drive circuits, e.g. power electronics
52.
STATOR UNIT, ELECTRIC VALVE, AND MANUFACTURING METHOD FOR STATOR UNIT
[Problem] To provide a stator unit and an electric valve by which it is possible to prevent electromagnetic waves emitted from a stator and to prevent a malfunction of an operation of an electronic component, and to provide a manufacturing method for the stator unit. [Solution] A stator unit 8 has a stator 80 and a housing 100 that is made of synthetic resin and that is molded integrally with the stator 80. Furthermore, the stator unit 8 has an electromagnetic-wave suppression film 90 arranged between the stator 80 and the housing 100.
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
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
H02K 37/14 - Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
This flow path switching valve comprises: a valve unit including a valve main body in which a first port and a second port through which a fluid flows in and out are formed on a wall surface forming a valve chamber, and a third port is formed on a bottom surface of the valve chamber, a valve body disposed rotatably in the valve chamber, and in which a flow path is formed, a first flow path communicating with the first port, a second flow path provided along with the first flow path with the valve main body interposed therebetween, and communicating with the second port, and a third flow path communicating with the third port and which is open on the side opposite to the third port; and a rotation drive part coupled to the valve unit and which rotates the valve body. To the first flow path and the second flow path of the valve unit, the first flow path and the second flow path of another valve unit can be respectively connected and coupled.
F16K 11/087 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
F16K 11/22 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
F16K 27/00 - Construction of housingsUse of materials therefor
This flow path switching valve includes: a valve unit provided with a valve body which has a first inlet/outlet and a second inlet/outlet formed, on a wall surface constituting a valve chamber, so as to allow a fluid to flow in and out therethrough, and has a third inlet/outlet formed on the bottom surface of the valve chamber, a valve element which is rotatably disposed inside the valve chamber and which has formed therein a flow channel, a first flow channel which is in communication with the first inlet/outlet, a second flow channel which is arranged parallel with the first flow channel with the valve body therebetween and which is in communication with the second inlet/outlet, and a third flow channel which is in communication with the third inlet/outlet and which is open at a side opposite to the third inlet/outlet; and a rotary drive part that is connected to the valve unit and that rotates the valve element. At a side of the valve unit opposite to the rotary drive part, another valve unit can be overlaid and connected.
F16K 11/087 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
F16K 11/22 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
F16K 27/00 - Construction of housingsUse of materials therefor
55.
MOTORIZED VALVE, MOTORIZED VALVE DEVICE, AND METHOD FOR ASSEMBLING MOTORIZED VALVE DEVICE
[Problem] To provide: a motorized valve and a motorized valve device that can be used across multiple types of systems; and an attachment method for a motorized valve. [Solution] A motorized valve (3) comprises a valve body assembly (5), a stator unit (6), and a nut member (7). The stator unit (6) is attached to the valve body assembly (5). The outer peripheral surface of a body member (10) of the valve body assembly (5) has provided thereto a male screw (11e). The male screw (11e) is screwed into a female screw (7e) provided on the inner peripheral surface of the nut member (7) and a female screw (201e) provided on the inner peripheral surface of an attachment hole (201) of a flow path block (2). The length of the male screw (11e) along an axial line (L) direction is greater than the length of the female screw (7e) along the axial line (L) direction.
In an electric valve, an upper surface of a main body portion of a valve body, a cylindrical portion of the valve body, and a flange member form a groove in an annular recess shape. A stator unit includes a tubular portion that surrounds the groove. A sealing member is disposed in the groove and held between the cylindrical portion of the valve body and the tubular portion of the sealing member.
A valve device capable of reducing pressure loss is provided. The valve device is provided with a valve main body having a valve chamber in which a valve body is arranged, inflow outlets, and communication holes communicating the valve chamber and the inflow outlets, and a rectification member arranged in the communication hole. The communication hole has a bent portion where the center line of the communication hole is bent, and the rectification member is arranged in the bent portion and has a corner portion formed by an inner circumferential surface bent or curved at an angle larger than the angle of the bent portion.
F16K 1/32 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces Details
F15D 1/04 - Arrangements of guide vanes in pipe elbows or duct bendsConstruction of pipe conduit elements for elbows with respect to flow, e.g. for reducing losses of flow
F16K 1/06 - Special arrangements for improving the flow, e.g. special shape of passages or casings
F16K 11/044 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
58.
MOTORIZED VALVE CONTROL DEVICE AND MOTORIZED VALVE DEVICE
[Problem] To provide a motorized valve control device and a motorized valve device that can more accurately detect a malfunction of a stepping motor of a motorized valve. [Solution] A motorized valve device (1) comprises a motorized valve (5) and a motorized valve control device (100). The motorized valve (5) has a stepping motor (66), and the stepping motor (66) has a magnet rotor (31), an A-phase stator (61), and a B-phase stator (62). The motorized valve control device (100) controls an A-phase current (Ia) which is supplied to an A-phase coil (61c) of the A-phase stator (61), and a B-phase current (Ib) which is supplied to a B-phase coil (62c) of the B-phase stator (62), by a PWM method. The motorized valve control device (100) detects occurrence of an abnormality in the A-phase coil (61c) or the B-phase coil (62c), on the basis of a comparison between an A-phase duty ratio (Da) related to the A-phase current (Ia) and a B-phase duty ratio (Db) related to the B-phase current (Ib).
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
H02P 8/36 - Protection against faults, e.g. against overheating or step-outIndicating faults
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 51/00 - Other details not peculiar to particular types of valves or cut-off apparatus
A combined valve includes a body block having multiple joints for letting fluid in and out, and a first four-way valve and second four-way valve provided inside the body block to selectively allow fluid flowing in from any one joint to flow out from any other joint. A shaft that operates a stem valve of the one first four-way valve is provided on one side of the body block, and a shaft that operates a stem valve of the other second four-way valve is provided on the side opposite to the one side of the body block.
F16K 27/00 - Construction of housingsUse of materials therefor
F16K 11/20 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit operated by separate actuating members
60.
ELECTRIC VALVE CONTROL DEVICE AND ELECTRIC VALVE DEVICE
[Problem] To provide an electric valve control device and an electric valve device which can relatively easily detect that the rotation of a magnet rotor has been regulated. [Solution] This electric valve control device controls an electric valve. The electric valve has a first magnetic sensor 91 and a second magnetic sensor 92. Output signals of the first magnetic sensor 91 and second magnetic sensor 92 are binary signals. When the total number of a plurality of N-poles and a plurality of S-poles of the magnet rotor 31 is noted as n, a natural number is denoted as N, an angle between a line M1 connecting an axis line L and the first magnetic sensor 91 and a line M2 connecting an axis line L and the second magnetic sensor 92 is denoted as θ, the following equation (1) is satisfied. (1) θ=(360/n)×N＋(360/2n) The electric valve control device detects the regulation of rotation of the magnet rotor 31 on the basis of the output signals and expectation value information about the output signals.
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
H02K 37/14 - Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
This electrically driven valve comprises: a valve main body 13 that has a main valve chamber 14 and a pilot valve chamber 22 inside, has an inflow port 15 and an outflow port 16 for a refrigerant, and has a main valve seat 17 formed at the end part of the outflow port on the main valve chamber side; a main valve body 18 that moves forward and backward with respect to the main valve seat to open and close the outflow port; a valve-opening spring 21 that biases the main valve body in the valve-opening direction; a pilot passage 19 passing through the main valve body and providing selective communication between the main valve chamber and the pilot valve chamber; a pressure equalizing path 20 that provides communication between the main valve chamber and the pilot valve chamber; a pilot valve seat 23 formed at the end part of the pilot passage on the pilot valve chamber side; a pilot valve body 24 that moves forward and backward with respect to the pilot valve seat to open and close the pilot passage; and an electrical driving device 41 that drives the pilot valve body. The outflow port is formed so as to be open to the side surface part of the main valve chamber. The valve-opening spring is provided such that the lower end of the valve-opening spring is located higher than the lower end of the inflow port.
[Problem] To provide a motor-operated valve control device and a motor-operated valve device that can suppress malfunction of a motor-operated valve at low temperatures. [Solution] A motor-operated valve control device (100) acquires a temperature (K) on the basis of a signal from a temperature sensor (126) that is arranged outside of a can (20) and transitions to a preparation mode when the temperature (K) is below a reference temperature (Kr). In the preparation mode, when a magnet rotor (31) does not rotate normally, the motor-operated valve control device (100) performs a heat generation operation to make a stator (60) generate heat until the magnet rotor (31) rotates normally. When the magnet rotor (31) has rotated normally, the motor-operated valve control device (100) transitions to a standby mode.
This drain pump comprises: a rotary blade; a bottom cover (cover); a housing that forms, together with the bottom cover, a pump chamber for accommodating the rotary blade, and that is coupled, through snap-fit, to the bottom cover in the axial direction X of the rotary blade; an annular O ring (seal component); and an accommodation part that is formed by the bottom cover and the housing outside of the pump chamber in the radial direction R of the rotary blade, and that accommodates the O ring, wherein the accommodation part has a conical inner surface, an outer peripheral surface, and a lower surface (pressing part) that press the O ring in the axial direction X and the radial direction R.
This flow path switching valve comprises: a valve body in which a valve chamber is formed; a valve member disposed in the valve chamber; an annular sheet member that is positioned between the valve member and the inlet/outlet of the valve body such that a side surface on the reverse side from the valve member side contacts a wall surface of the valve body, and the outer peripheral surface is separated from the valve body; an inclined seal surface which is formed on the sheet member, is inclined at a fixed angle θ relative to an axis, and is contacted by the outer peripheral surface of the valve member; an O-ring that is compressed and accommodated in an O-ring groove provided in the wall surface of the valve body; and a rotation driving unit that rotates the valve member, wherein the value of the angle θ is determined such that the pressing force between the valve member and sheet member at the minimum temperature during use and the pressing force between the valve body and the sheet member at the maximum temperature during use do not vary.
F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfacesPackings therefor
[Problem] To provide an electric valve that makes it possible to omit a stopper provided to a magnet rotor and stop rotation of the magnet rotor when movement of a valve body is stopped. [Solution] An electric valve 1 has: a valve main body 10 having a valve port 15 and a valve seat 16 surrounding the valve port 15; a valve body 40 facing the valve port 15; a valve shaft 34; and a stepping motor 66. The valve shaft 34 has a male thread 34c formed therein. The valve main body 10 has formed therein a female thread 13c to which the male thread 34c is threaded. The male thread 34c and the female thread 13c constitute a feed screw mechanism 33. The valve shaft 34 is coaxially fixed to the magnet rotor 31 of the stepping motor 66. The lower end of the valve shaft 34 is connected with the valve body 40. The valve body 40 is moved toward the valve port 15 when the magnet rotor 31 rotates in a valve closing direction. Movement of the valve body 40 toward the valve port 15 is restricted when the valve body 40 is brought into contact with the valve seat 16.
Provided are a control device for a motor-operated valve, a motor-operated valve, and a motor-operated valve unit using the same capable of performing appropriate flow rate control by changing the control of a stepping motor according to the amount of hysteresis. The present invention comprises a valve body capable of moving in a direction toward or away from a valve seat, a stepping motor that operates by inputting a drive pulse, a drive mechanism that drives the valve body by using the drive force output from the stepping motor, a non-volatile storage unit that stores the amount of hysteresis, and a control unit that drives the stepping motor according to operation instruction information input from outside. When moving the valve body in a direction different from the last movement direction on the basis of the operation instruction information input from outside, the control unit inputs, to the stepping motor, a number of drive pulses equal to the effective number of pulses obtained by adding the number of pulses corresponding to the amount of hysteresis stored in the storage unit to the target number of pulses corresponding to the target movement amount of the valve body.
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F25B 41/35 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
67.
MOTOR-OPERATED VALVE AND METHOD FOR ACQUIRING VALVE BODY POSITION OF MOTOR-OPERATED VALVE
[Problem] To provide a motor-operated valve with which variation in the rear of a throttle flow path can be minimized and the desired flow rate characteristics can be obtained. [Solution] A valve body 40 of a motor-operated valve 1 has a control unit 45 having a single tapered shape. The valve body 40 is driven in a movement section between a closed position Pa and a fully open position Pz by the rotation of a stepping motor 66. When the valve body 40 is in the closed position Pa, a control surface 46, which is the outer peripheral surface of the control unit 45, is in contact with a valve seat 16. When the valve body 40 has moved from the closed position Pa and is in the movement section, a throttle flow path is formed between the valve seat 16 and the control surface 46. The movement section includes a first section between the closed position Pa and a first position, and a second section between the first position and a second position. A control device 80 makes the step angle when the valve body 40 is in the first section smaller than the step angle when the valve body 40 is in the second section.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Clack valves [parts of machines]; Control valves for regulating the flow of gases and liquids [parts of machines]; Motorized valves; Motor operated valves with control apparatus; Differential pressure valves [parts of machines]; Parts and fittings of valves [parts of machines]; Pressure regulating valves; Pressure regulating valves being parts of machines; Pressure switches being parts of machines; Pump control valves; Valves; Valves [parts of machines]; Valves as machine components; Valves operated automatically by hydraulic control; Valves operated automatically by pneumatic control; Valves used for plumbing of air-conditioning apparatus; Valves used for plumbing of air conditioners; Valves used for plumbing of freezing machines and apparatus; Valves for freezing installations [parts of machines]; Valves used for plumbing of water heaters; Channel switching valves [parts of machines]; Flow regulating valves [parts of machines]; Electronic expansion valves [parts of machines]; Automatic control valves [parts of machines]; Ball valves being parts of machines. Computer programs; Computer software [programs]; Electrical and electronic control apparatus and instruments; Electronic control apparatus for automatic machines; Electronic control apparatus for industrial machines; Electronic control apparatus for valves; Power distribution or control machines and apparatus; Solenoid valves [electromagnetic switches]; Telecommunication machines and apparatus; Control apparatus for valves used for air conditioning installations; Control apparatus for valves used for freezing installations; Computer programs for control apparatus used for valves of air-conditioning installations (including downloadable); Computer programs for control apparatus used for valves of freezing installations (including downloadable). Parts and fittings of air conditioners for industrial purposes; Air conditioners for industrial purposes; Air conditioners for vehicles; Parts and fittings of air conditioners for automobiles; Expansion valves for air-conditioning apparatus of automobiles and vehicles; Air cooling apparatus; Air-conditioning apparatus; Room air conditioning apparatus and their parts and fittings; Expansion valves for air-conditioning apparatus; Cooling installations and machines; Freezing machines and apparatus; Freezing machines and apparatus for industrial purposes; Industrial freezing machines and apparatus and their parts; Refrigerating apparatus and machines; Refrigerating appliances and installations; Refrigerating machines; Refrigerating machines for industrial purposes; Expansion valves for refrigerating or freezing machines; Room air conditioners; Thermostatic radiator valves; Valves [plumbing fittings]; Valves for air conditioners; Freezing installations; Water heaters.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Clack valves [parts of machines]; Control valves for regulating the flow of gases and liquids [parts of machines]; Motorized valves; Motor operated valves with control apparatus; Differential pressure valves [parts of machines]; Parts and fittings of valves [parts of machines]; Pressure regulating valves; Pressure regulating valves being parts of machines; Pressure switches being parts of machines; Pump control valves; Valves; Valves [parts of machines]; Valves as machine components; Valves operated automatically by hydraulic control; Valves operated automatically by pneumatic control; Valves used for plumbing of air-conditioning apparatus; Valves used for plumbing of air conditioners; Valves used for plumbing of freezing machines and apparatus; Valves for freezing installations [parts of machines]; Valves used for plumbing of water heaters; Channel switching valves [parts of machines]; Flow regulating valves [parts of machines]; Electronic expansion valves [parts of machines]; Automatic control valves [parts of machines]; Ball valves being parts of machines. Computer programs; Computer software [programs]; Electrical and electronic control apparatus and instruments; Electronic control apparatus for automatic machines; Electronic control apparatus for industrial machines; Electronic control apparatus for valves; Power distribution or control machines and apparatus; Solenoid valves [electromagnetic switches]; Telecommunication machines and apparatus; Control apparatus for valves used for air conditioning installations; Control apparatus for valves used for freezing installations; Computer programs for control apparatus used for valves of air-conditioning installations (including downloadable); Computer programs for control apparatus used for valves of freezing installations (including downloadable). Parts and fittings of air conditioners for industrial purposes; Air conditioners for industrial purposes; Air conditioners for vehicles; Parts and fittings of air conditioners for automobiles; Expansion valves for air-conditioning apparatus of automobiles and vehicles; Air cooling apparatus; Air-conditioning apparatus; Room air conditioning apparatus and their parts and fittings; Expansion valves for air-conditioning apparatus; Cooling installations and machines; Freezing machines and apparatus; Freezing machines and apparatus for industrial purposes; Industrial freezing machines and apparatus and their parts; Refrigerating apparatus and machines; Refrigerating appliances and installations; Refrigerating machines; Refrigerating machines for industrial purposes; Expansion valves for refrigerating or freezing machines; Room air conditioners; Thermostatic radiator valves; Valves [plumbing fittings]; Valves for air conditioners; freezing installations; water heaters.
Provided is an electromagnetic valve comprising: a valve main body in which an inflow opening and an outflow opening for fluid are formed and a main valve seat and a main valve chamber are formed between the inflow opening and the outflow opening; a main valve body which is arranged in the main valve chamber and can come in contact with and can separate from the main valve seat; a plunger which is arranged in the valve main body and moves the main valve body in a direction in which the main valve body comes in contact with and separates from the main valve seat; a solenoid which is formed by winding a coil for driving the plunger; a magnet which is mounted to the plunger; and a magnetic sensor which is provided to the valve main body and detects magnetic flux density of the magnet.
F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
F16K 31/40 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
The present invention performs calibration of the rotation range of a valve member. A flow path switching valve (10) comprises: a valve body (14) in which a valve chamber (12) is formed and that has a plurality of fluid inlet and outlet ports (24, 26, 28) formed in a wall surface forming the valve chamber (12); a valve member (16) that has a valve shaft (48), is rotatably disposed in the valve chamber (12), and is formed with a flow path (36); a sealing part (38) that is disposed to surround the peripheries of openings (36A, 36B) of the flow path (36) of the valve member (16), and seals between the inlet and outlet ports (24, 26, 28) and the valve member (16) in a state in which the openings (36A, 36B) and the inlet and outlet ports (24, 26, 28) face each other; and a rotary drive unit (18) that rotates the valve member (16) by means of the valve shaft (48) so as to selectively switch the communication state of the plurality of inlet and outlet ports through the flow path (36) of the valve member (16), and that is capable of detecting the angular position of the valve member (16). Stoppers (44, 46) that restrict further rotation of the valve member at at least one of the upper limit and lower limit of the rotation range of the valve disc are provided inside the valve body (14).
F16K 11/085 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
A flow path switching valve comprises: a valve body which has a valve chamber formed therein and which has inlet/outlet ports formed in an interior wall (wall surface) that forms the valve chamber; a valve element which is rotatably disposed within the valve chamber and which has formed therein a flow path having a plurality of openings that are provided to an outer peripheral surface facing the wall surface; a sealing part which is disposed to encircle the circumference of the openings of the flow path in the valve element and which provides sealing between the inlet/outlet ports and the valve element in a state the openings and the inlet/outlet ports are positioned to face each other; and a rotary drive unit which rotates the valve element via a valve shaft to allow the connection state of the inlet/outlet ports to be switched selectively through the flow path of the valve element and which can detect the angular position of the valve element. This flow path switching valve has a mode in which the openings of the valve element are sealed simultaneously by the wall surface and the flow of fluid in the flow path is brought to a halt.
F16K 11/085 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
F16K 11/087 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
73.
MOTORIZED VALVE CONTROL DEVICE, MOTORIZED VALVE DEVICE, AND METHOD FOR CONTROLLING MOTORIZED VALVE
[Problem] To provide a motorized valve control device capable of determining whether a rotor can rotate normally within an appropriate rotation range. [Solution] The motorized valve control device 90 (1) inputs a pulse P to a stepping motor 80 to cause a rotor 81 to rotate in a second direction, (2) when a motorized valve 5 enters a second direction rotation restricted state Sr2, inputs the pulse P to the stepping motor 80 to cause the rotor 81 to rotate in a first direction, (3) when the motorized valve 5 enters a first direction rotation restricted state Sr1 while rotating the rotor 81 in the first direction, acquires the number of pulses (input number Xi) input to the stepping motor 80 during the period from the second direction rotation restricted state Sr2 to the first direction rotation restricted state Sr1, (4) when the input number Xi is greater than or equal to a design number Xd and less than or equal to an upper limit number Xu, determines that the rotor 81 can rotate normally, and (5) when the input number Xi is less than the design number Xd or when the input number Xi is greater than the upper limit number Xu, determines that the rotor 81 cannot rotate normally.
A pump comprising: a pump chamber 13 having a suction port P11 and a plurality of discharge ports P21 and P22; an electric motor 41 capable of forward and reverse rotation; an impeller 21 provided in the pump chamber and driven by the electric motor; and a switching valve 31 that is rotated by the electric motor via the impeller and has a valve body 32 that opens and closes the discharge ports, wherein the valve body has a plurality of shielding wall portions that close the discharge ports and a plurality of opening portions that open the discharge ports, the shielding wall portions and the opening portions are arranged so as to surround the impeller and set alternately in array in a circumferential direction of the valve body so that the discharge ports can be opened or closed depending on the rotational position of the valve body, the discharge ports are formed on an inner peripheral surface 13a of the pump chamber along an outer peripheral surface of the valve body, and the pump includes a one-way rotation transmission mechanism 51 that is interposed between the impeller and the switching valve, transmits the rotational force in a second direction from the impeller to the switching valve but does not transmit the rotational force in a first direction from the impeller to the switching valve.
[Problem] To provide a motorized valve control device and a motorized valve device capable of suppressing noise by shortening the time required for the initialization operation of the motorized valve. [Solution] A motorized valve control device 90 (1) starts inputting a pulse P to a stepping motor 66 to rotate a rotor 41 in the first direction, (2) every time the pulse P is input to the stepping motor 66, acquires the rotation angle of the rotor 41 on the basis of a rotation angle signal Sa and acquires the position of the rotor 41 on the basis of a magnetic flux density signal Sm, and (3) when the change in the rotation angle of rotor 41 matches change pattern information J and the position of the rotor 41 coincides with a proximity position Rk or a position closer to a reference position Rx than the proximity position Rk, stops the input of the pulse P to the stepping motor 66. Furthermore, the change pattern information J includes a change in rotation angle indicating rotation in the second direction.
Provided is an expansion valve that makes it possible to further reduce weight and costs even when, for example, the same materials as those used in the prior art are used. The expansion valve comprises: a valve main body equipped with a valve seat within a valve chamber; a valve body that prevents the passage of a fluid as a result of being seated on the valve seat and allows the passage of the fluid as a result of being separated from the valve seat; an insertion section; and a flange protruding in a direction orthogonal to an axis with respect to the insertion section. The expansion valve also includes a valve body support connected to the valve body, a coil spring that has the insertion section inserted therein and biases the valve body toward the valve seat via the valve body support, and an anti-vibration member sandwiched between the flange and the coil spring. The anti-vibration member comprises a base section including an opening through which the insertion section passes, and a plurality of leg pieces extending from the base section and in contact with the inner wall of the valve chamber. At least one of the outer circumference of the insertion section and the inner circumference of the opening is non-circular in a cross section orthogonal to the axis of the valve body support, and the outer circumference of the insertion section and the inner circumference of the opening are in contact at three or more points along the circumferential direction.
F25B 41/335 - Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant via diaphragms
F16K 31/68 - Operating meansReleasing devices responsive to temperature variation actuated by fluid pressure or volumetric variation in a confined chamber
This pump comprising: a pump chamber 14 having a suction port 15, a first discharge port 16 and a second discharge port 17; an impeller 18 that generates a rotating flow; and a switching valve 21 that has a first valve cover 23 and a second valve cover 24 and discharges fluid from the first discharge port or the second discharge port depending on the direction of the rotating flow, the switching valve being in a first switching state in which the first valve cover closes the first discharge port and the second valve cover opens the second discharge port when the rotating flow is in the first direction, or in a second switching state in which the second valve cover closes the second discharge port and the first valve cover opens the first discharge port when the rotating flow is in the second direction, wherein the switching valve has a first contact means 25 for coming into contact with the impeller and receiving a force from the impeller that causes return to the first switching state when the switching valve in the first switching state swings toward the second switching state, and a second contact means 26 for coming into contact with the impeller and receiving a force from the impeller that causes return to the second switching state when the switching valve in the second switching state swings toward the first switching state.
This flow path switch valve comprises: a valve body having inlet/outlet openings formed in a pair of a left first wall and a right first wall that oppose each other across a valve chamber formed inside the valve body; a ball-shaped valve body disposed inside the valve chamber; a ring-shaped sheet member that is disposed between the valve body and the inlet/outlet openings, and also between the left first wall and the right first wall of the valve chamber opposing an outer peripheral section; an O-ring that presses the sheet member against the valve body; a rotational drive unit that rotates the valve body; and an inclined sealing surface that is formed in the sheet member, that is inclined at a constant angle θ to an axial line, and with which the outer peripheral surface of the valve body is in contact. The value of the angle θ is set such that the compression rate of the O-ring at the minimum temperature and the compression rate of the O-ring at the maximum temperature do not change.
F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfacesPackings therefor
F16K 11/08 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Motor operated valves being parts of machines, not for land vehicles; motor operated valves being parts of machines with control apparatus; pressure regulating valves being parts of machines; differential pressure valves being parts of machines; flow regulator valves being parts of machines Electronic apparatus for controlling valves used for air conditioning installations; electronic apparatus for controlling valves used for freezers; downloadable computer software programs for controlling valves in air conditioning equipment; downloadable computer software programs for controlling valves in freezing equipment; solenoid valves; automatic control valves being parts of flow regulators; expansion valves for fluid control Industrial freezing machines and apparatus in the nature of freezers and parts thereof; room air conditioning apparatus and parts thereof; valves used for plumbing fittings of air-conditioning apparatus; valves used for plumbing fittings of air conditioners; valves used for plumbing fittings of freezing machines and apparatus; valves used for plumbing fittings of freezing machines and apparatus, namely, parts of freezers being valves; valves used for plumbing fittings of water heaters, namely, valves for water heaters; parts of freezers being valves
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Motor operated valves being parts of machines, not for land vehicles; motor operated valves being parts of machines with control apparatus; pressure regulating valves being parts of machines; differential pressure valves being parts of machines; flow regulator valves being parts of machines Electronic apparatus for controlling valves used for air conditioning installations; electronic apparatus for controlling valves used for freezers; downloadable computer software programs for controlling valves in air conditioning equipment; downloadable computer software programs for controlling valves in freezing equipment; solenoid valves; automatic control valves being parts of flow regulators; expansion valves for fluid control Industrial freezing machines and apparatus in the nature of freezers and parts thereof; room air conditioning apparatus and parts thereof; valves used for plumbing fittings of air-conditioning apparatus; valves used for plumbing fittings of air conditioners; valves used for plumbing fittings of freezing machines and apparatus; valves used for plumbing fittings of freezing machines and apparatus, namely, parts of freezers being valves; valves used for plumbing fittings of water heaters, namely, valves for water heaters; parts of freezers being valves
The present invention addresses the problem of ensuring valve performance and enabling easy arrangement of a valve body and a sealing part in a flow passage switching valve having a valve body in which four flow passage openings are formed in the same plane. In a flow passage switching valve (10), a valve body (16) and sealing parts (18) can be arranged in a valve chamber (12) from an opening (12U). On the outer surface of the valve body (16), a pair of planar sections (16U, 16L) are formed such that a portion (16L) which opposes a bottom plate (12E) constituting the valve chamber (12) and a portion (16U) positioned on the side opposite the abovementioned portion in the diameter direction of a spherical surface are parallel to each other. The outer dimension of the valve body in a direction different from a direction of a two-surface width (T), which is the minimum distance between the planar sections (16U, 16L), is greater than the two-surface width (T) and is equal to or less than the diameter of the spherical surface. The two-surface width (T) is less than a separation distance (K) between the opposing sealing parts, and equal to the outer dimension of the valve body in the direction of the two-surface width (T).
F16K 27/00 - Construction of housingsUse of materials therefor
F16K 27/06 - Construction of housingsUse of materials therefor of taps or cocks
F16K 11/087 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
According to the present invention, three flow path ports are each formed in respective side walls of a valve main body. Sealing parts disposed so as to surround the flow path ports seal spaces between the side walls and the outer surface of the valve body. The outer surface of the valve body, which rotates, is in contact with the entire circumference of at least one of the sealing parts.
F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfacesPackings therefor
F16K 11/08 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks
According to the present invention, when a valve body is tilted by 90 [degrees] with respect to the use state so that the lower surface portion of the valve body faces a side wall of a main valve body, a gap into which a sealing portion can be inserted is formed between the side wall and the lower surface portion. The sealing portion is inserted into said gap. Then, the valve body is sequentially caused to face the other side walls.
F16K 11/087 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
F16K 27/06 - Construction of housingsUse of materials therefor of taps or cocks
To provide a drainage pump capable of reducing the amount of drain water remaining in a drain pan. A drainage pump includes a housing, an impeller housed in the housing, and a motor with a drive shaft connected to the impeller. The housing includes a suction pipe in a cylindrical shape extending in an up-and-down direction. A suction port facing downward and a concave surface in an annular shape around the suction port are disposed at a lower end of the suction pipe.
F04D 29/22 - Rotors specially for centrifugal pumps
F04D 7/04 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogeneous
F04D 13/06 - Units comprising pumps and their driving means the pump being electrically driven
This flow path switch valve comprises a valve main body inside of which a valve chamber is formed and in which inlet/outlets for fluid are formed in a wall surface forming the valve chamber, a valve body which is rotatably disposed in the valve chamber and in which a flow path is formed, a sealing part which is disposed between the valve body and the inlet/outlet and which creates a seal between the valve body and the inlet/outlet, a rotation-driving unit that causes the valve body to rotate by means of a valve shaft so that the communication state of a plurality of the inlet/outlets is selectively switched through the flow path of the valve body and that can detect the angle position of the valve shaft, and a stopper that restricts further rotation of the valve shaft at the upper limit and/or the lower limit of the rotation range of the valve body.
F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfacesPackings therefor
F16K 11/085 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
F16K 11/087 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Clack valves [parts of machines]; Control valves for regulating the flow of gases and liquids [parts of machines]; Motorised valves; Motor operated valves with control apparatus; Differential pressure valves [parts of machines]; Parts and fittings of valves [parts of machines]; Pressure regulating valves; Pressure regulating valves being parts of machines; Pressure switches being parts of machines; Pump control valves; Valves; Valves [parts of machines]; Valves as machine components; Valves operated automatically by hydraulic control; Valves operated automatically by pneumatic control; Valves used for plumbing of air-conditioning apparatus; Valves used for plumbing of air conditioners; Valves used for plumbing of freezing machines and apparatus; Valves for freezing installations [parts of machines]; Valves used for plumbing of water heaters; Channel switching valves [parts of machines]; Flow regulating valves [parts of machines]; Electronic expansion valves [parts of machines]; Automatic control valves [parts of machines]. Computer programs; Computer software [programs]; Electrical and electronic control apparatus and instruments; Electronic control apparatus for automatic machines; Electronic control apparatus for industrial machines; Electronic control apparatus for valves; Phase modifiers; Power distribution or control machines and apparatus; Rotary converters; Solenoid valves [electromagnetic switches]; Telecommunication machines and apparatus; Control apparatus for valves used for air conditioning installations; Control apparatus for valves used for freezing installations; Computer programs for control apparatus used for valves of air-conditioning installations (including downloadable); Computer programs for control apparatus used for valves of freezing installations (including downloadable). Air conditioners for industrial purposes; Air conditioners for vehicles; Parts and fittings of air conditioners for automobiles; Expansion valves for air-conditioning apparatus of automobiles and vehicles; Air cooling apparatus; Air-conditioning apparatus; Room air conditioning apparatus and their parts and fittings; Expansion valves for air-conditioning apparatus; Cooling installations and machines; Freezing machines and apparatus; Freezing machines and apparatus for industrial purposes; Industrial freezing machines and apparatus and their parts; Refrigerating apparatus and machines; Refrigerating appliances and installations; Refrigerating machines; Refrigerating machines for industrial purposes; Expansion valves for refrigerating or freezing machines; Room air conditioners; Thermostatic radiator valves; Valves [plumbing fittings]; Valves for air conditioners; Parts and fittings of air conditioners for industrial purposes; Freezing installations; Water heaters.
[Problem] To provide an electric valve that is capable of reducing variations in the number of valve-opening pulses. [Solution] An electric valve 1 having a plurality of positions (hereinafter referred to as "stator unit attachment positions"), on a stator unit 7, that attach to a valve body assembly 5A. When the step angle of a stepping motor 66 is denoted by θ, the number of excitation patterns of the stepping motor 66 is denoted by M, the number of the stator unit attachment positions is denoted by K, and an integer is denoted by U, the angle dα[j] around an axis between a jth (j = 1, 2, …, K-1) stator unit attachment position and a j+1th stator unit attachment position is a multiple of the step angle θ and satisfies expression (1) below. (1) dα[j] ≠ M×θ×U
[Problem] To provide an electric valve control device and an electric valve device with which any increase in the internal temperature of a motor driver can be minimized. [Solution] When a computer 80 of an electric valve control device 70 receives a valve opening degree change command including a target valve opening degree for an electric valve 5, the computer 80 acquires a target number, which is the number of pulses to be inputted to a motor driver 77 in order to set the valve opening degree of the electric valve 5 to the target valve opening degree. When it is assessed that the temperature surrounding the motor driver 77 is not high, the computer 80 continuously inputs the target number of pulses to the motor driver 77. When it is assessed that the surrounding temperature is high, the computer 80 continuously inputs a unit number of pulses at a time to the motor driver 77 until the number of pulses inputted to the motor driver 77 reaches the target number, and the computer 80 provides a pulse input pause period each time the unit number of pulses are inputted.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Motor operated valves being parts of machines, not for land vehicles; motor operated valves being parts of machines with control apparatus; pressure regulating valves being parts of machines; differential pressure valves being parts of machines; flow regulator valves being parts of machines Electronic apparatus for controlling valves used for air conditioning installations; electronic apparatus for controlling valves used for freezers; downloadable computer software programs for controlling valves in air conditioning equipment; downloadable computer software programs for controlling valves in freezing equipment; solenoid valves; automatic control valves being parts of flow regulators; expansion valves for fluid control Industrial freezing machines and apparatus in the nature of freezers and parts thereof; room air conditioning apparatus and parts thereof; valves used for plumbing fittings of air-conditioning apparatus; valves used for plumbing fittings of air conditioners; valves used for plumbing fittings of freezing machines and apparatus; valves used for plumbing fittings of freezing machines and apparatus, namely, parts of freezers being valves; valves used for plumbing fittings of water heaters, namely, valves for water heaters; parts of freezers being valves
This electric valve comprises: a valve main body having a valve chamber communicating with a refrigerant inflow passage and a refrigerant outflow passage; a valve body that moves forward and backward in relation to a valve seat formed in the valve chamber, between a closed state of being seated on the valve seat and an open state of being separated from the valve seat, thereby changing the flow rate of the refrigerant; an electric motor 23 that drives the valve body; a control substrate on which electronic components for controlling the electric motor are mounted; a substrate-housing portion 43 capable of housing the control substrate in a sealed state; an external connection terminal 45 for establishing electrical connection with the exterior; and a connector portion 44 that supports the external connection terminal inside and has a sealed structure that is sealed by fitting with a mating connector. The electric valve also has a communication path 51 that allows communication between the substrate-housing portion and the connector portion, and the substrate-housing portion becomes sealed when the mating connector is fitted into the connector portion.
[Problem] To provide an electric valve control device and an electric valve device with which an electric valve can be returned from a lock state to a normal state. [Solution] An electric valve control device 70 has a computer for controlling a stepping motor of an electric valve 5. Upon detection of stepping out of the stepping motor during control of the stepping motor such that a rotor 41 rotates in a first direction so as to change the valve opening degree of the electric valve 5, the computer controls the stepping motor such that the rotor 41 rotates in a second direction, which is opposite to the first direction.
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F25B 41/35 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
Provided is a drainage pump that can inhibit the propagation of vibrations while being easy to attach without increasing the number of components. This drainage pump has a case accommodating a rotary blade and a motor that rotationally drives the rotary blade, wherein: the case has a plurality of legs protruding along the rotational axis direction of the rotary blade; the legs have a leg body fixed to a mounting part, and a plurality of plate-shaped parts connecting the leg body and the case.; and when viewed through a space between the plate-shaped parts, a first gap is formed between the case and the leg body.
A motor-operated valve comprises a valve body 12 having a valve chamber 13 communicating with a refrigerant inflow passage 16 and a refrigerant outflow passage 15, a valve element 17 that moves back and forth with respect to a valve seat 14 formed in the valve chamber to change the refrigerant flow rate, an electric motor 23 that drives the valve element, a board 46 that controls an electric motor, and a board accommodating portion including a case 43 that accommodates the board, wherein the board has a fixing hole for fixing the board in the case, the case has a supporting projection inserted into the fixing hole to support the board in the case, and the supporting projection is formed integrally with a case portion. It is preferable that the supporting projection have a stepped portion 57 and the board be sandwiched between the stepped portion and a pressing projection 61 provided on a back surface of a lid 47 that closes the case.
Provided are an electric valve control device and an electric valve device that are capable of suppressing an excess of the position of a rotor of a motor from a position corresponding to the maximum opening degree of an electric valve. An electric valve device (1) has an electric valve (5) and an electric valve control device (70). The electric valve (5) has a stepper motor (66). The electric valve control device (70) controls the electric valve (5). The electric valve control device (70) has current valve opening degree information indicating the current valve opening degree of the electric valve (5), and changes the valve opening degree of the electric valve (5) within a range from the minimum opening degree to the maximum opening degree on the basis of the current valve opening degree information. Upon detection of an abnormality in the electric valve (5), the electric valve control device (70) sets the maximum opening degree to the current valve opening degree information.
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
An electric valve 11 comprising: a main valve body 12 having a valve chamber 13 that communicates with an inflow passage 15 for introducing a refrigerant and an outflow passage 16 for discharging the refrigerant; a valve body 17 that changes the flow rate of the refrigerant by advancing and retreating with respect to a valve seat 14 formed in the valve chamber between a closed state in which the valve body is seated on the valve seat and an open state in which the valve body is apart from the valve seat; and an electric motor 45 that drives the valve body. The electric motor has: a stator 46 including a coil 49 that is supplied with a current to generate a magnetic force; and a magnet rotor 36 that is disposed on the inner side of the stator and rotates by receiving the magnetic force generated by the coil. The electric valve further comprises a magnetic sensor 62 that detects the magnetic force of the magnet rotor. In the electric valve, a magnetic shield member (made from, for example, a soft magnetic material) 61 is provided so as to be interposed between the magnetic sensor and the coil.
[Problem] To provide a valve device capable of suppressing leakage of a refrigerant, a decrease in cooling efficiency, and noise caused by a flow of the refrigerant. [Solution] A valve device 5 is used in an air conditioning apparatus 1. The valve device 5 has: one valve body 100 having a plurality of refrigerant passages; and a plurality of valve units mounted to the valve body 100. The plurality of refrigerant passages include: a high-temperature refrigerant passage in which a high-temperature refrigerant flows; an intermediate-temperature refrigerant passage in which an intermediate-temperature refrigerant, the temperature of which is lower than that of the high-temperature refrigerant, flows; and a low-temperature refrigerant passage in which a low-temperature refrigerant, the temperature of which is lower than that of the intermediate-temperature refrigerant, flows.
[Problem] To provide: a motorized valve device and a motorized valve control device that can shorten the time taken up by the action of initializing a motorized valve to curb any noise; and a method for controlling the motorized valve [Solution] A motorized valve control device 70 supplies a drive current to a stator 60 to cause a rotor 41 to rotate in the first direction. The motorized valve control device 70 acquires a voltage produced in the stator 60 due to the rotation of the rotor 41. The motorized valve control device 70 determines whether a motorized valve 5 is in a regulated rotation state in which a stopper mechanism 49 regulates rotation of the rotor 41 in the first direction on the basis of at least one from among the area of a voltage waveform, the amplitude of waves periodically observed in the waveform of the voltage, and the periodic appearance of new waves different from the waves periodically observed in the waveform of the voltage.
[Problem] To provide an electric valve control device, an electric valve device, and a method for controlling an electric valve which allow reduction in time required for the initialization operation of an electric valve and suppression of noise. [Solution] An electric valve control device 70 inputs a pulse to a stepper motor 66 to rotate a rotor 41 in a first direction. The electric valve control device 70 acquires a voltage generated in a stator 60 by the rotation of the rotor 41. The electric valve control device 70 then determines, on the basis of the degree of difference between the waveform of the voltage and a voltage reference waveform, whether or not an electric valve 5 is in a first rotation-regulated state in which the rotation of the rotor 41 in the first direction is regulated.
Provided is an electric valve which enables employment of a large valve diameter while ensuring durability of the electric valve. An electric valve (1) comprises a main valve body (10) having a valve port (14), a valve body (40) facing the valve port (14), a rotor (51) rotatable with respect to the main valve body (10), and a drive shaft (70) to which the rotation of the rotor (51) is transmitted. When the rotation of the rotor (51) is transmitted to the drive shaft (70), the drive shaft (70) moves downward or upward. The drive shaft (70) pushes the valve body (40) when the drive shaft (70) moves downward and pulls the valve body (40) when the drive shaft (70) moves upward and can rotate relatively with respect to the valve body (40).
A pressure regulating valve (11) comprising: a valve main body (12) having a valve chamber (13) that communicates with a refrigerant inflow passage (14) and a refrigerant outflow passage (15); a valve body (17) that changes the flow rate of a refrigerant by advancing to and retreating from a valve seat (16) formed in the valve chamber (13) between a closed state of being seated on the valve seat (16) and an open state of being spaced apart from the valve seat (16); a pressure-sensitive member (21) which biases the valve body (17) toward the valve seat (16) and which expands and contracts according to a pressure received by the valve body (17) from the refrigerant flowing in from the inflow passage (14) to thereby allow the advancement and retreat of the valve body (17); an adjustment means (24) for adjusting a biasing force applied by the pressure-sensitive member (21) to the valve body (17); and an actuator (such as stepper motor) (40) that drives the adjustment means (24). It is preferred for the adjustment means (24) to comprise a stopper member (29) that can stop the movement of an adjustment member caused by the actuator (40) and can serve as a start point for setting the biasing force.
