WO2016072070A1 - Soupape intégrée, dispositif de régulation, procédé de fabrication d'un dispositif de régulation et dispositif embarqué - Google Patents

Soupape intégrée, dispositif de régulation, procédé de fabrication d'un dispositif de régulation et dispositif embarqué Download PDF

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Publication number
WO2016072070A1
WO2016072070A1 PCT/JP2015/005441 JP2015005441W WO2016072070A1 WO 2016072070 A1 WO2016072070 A1 WO 2016072070A1 JP 2015005441 W JP2015005441 W JP 2015005441W WO 2016072070 A1 WO2016072070 A1 WO 2016072070A1
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WIPO (PCT)
Prior art keywords
valve body
valve
flow path
refrigerant
axial direction
Prior art date
Application number
PCT/JP2015/005441
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English (en)
Japanese (ja)
Inventor
康裕 川瀬
幸克 尾▲崎▼
内田　和秀
伊藤　哲也
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株式会社デンソー
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Publication of WO2016072070A1 publication Critical patent/WO2016072070A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/048—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with valve seats positioned between movable valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part

Definitions

  • the present disclosure relates to an integrated valve, a control device, a control device manufacturing method, and an in-vehicle device.
  • the forward or reverse motion of the stepping motor is converted into the reciprocating motion of the rod in the axial direction, and the valve body is moved closer to or away from the valve seat by the reciprocating motion of the rod in the axial direction.
  • the valve body is moved to a position where the valve body is in contact with the valve seat and the flow path is fully closed, and the position where the flow path is fully closed by the valve body (hereinafter referred to as the fully closed position)
  • Initialization is performed with the origin, and the opening is detected based on the rotation angle of the stepping motor with the origin determined by this initialization as a reference position.
  • the first and second valve bodies are driven by a single rod, the first and second valve bodies are simultaneously driven to the fully closed position by driving the first and second valve bodies by the rod. Even if it tries to position, one valve body will shift from a fully closed position among the 1st and 2nd valve bodies. That is, the first and second valve bodies cannot be accurately positioned at the fully closed position simultaneously by one rod.
  • the integrated valve of Patent Document 1 the first flow path formed between the first inlet and the outlet, the second flow path formed between the second inlet and the outlet, A first valve seat disposed in one flow path and a second valve seat disposed in the second flow path are provided. Further, the integrated valve includes a first spring that urges the first valve body to push the first valve body toward the first valve seat, and a second force that pushes the second valve body toward the second valve seat. A second spring that biases the valve body is provided.
  • the first and second valve bodies In a state where the first spring pushes the first valve body toward the first valve seat and the second spring pushes the second valve body toward the second valve seat, the first and second valve bodies The first and second flow paths are fully closed.
  • the first valve body When the rod moves to one side in the axial direction, the first valve body is pushed by the rod, and the first valve body is separated from the first valve seat. Therefore, the first valve body opens the first flow path with the second valve body fully closing the second flow path.
  • a stopper provided on the rod pushes the second valve body. Therefore, the second valve body is separated from the second valve seat. Therefore, the second valve body is in a state where the second flow path is opened while the first valve body is fully closed on the first flow path. Thereby, the opening degree control of the first and second valve bodies can be performed.
  • the position sensor for detecting the position of the rod is used to set the valve body for each valve body without using the fully closed position of the first and second valve bodies as the origin.
  • the opening degree is detected for each valve element by detecting the opening degree.
  • the number of parts may increase, leading to an increase in cost.
  • the present disclosure provides an integrated valve, an integrated valve control device, and an integrated valve configured to enable the opening control of the first and second valve bodies without using a position sensor that detects the position of the rod. It is an object to provide a method for manufacturing a control device and an in-vehicle device.
  • An integrated valve includes a first flow path for allowing fluid to flow between a first inlet and an outlet, a first valve seat disposed in the first flow path, and a first valve seat.
  • the first valve body closes the first flow path by contacting the first valve body and opens the first flow path by moving away from the first valve seat, and the force is applied to the first valve body in the direction of closing the first flow path.
  • the second valve body that closes the second flow path by opening the second flow path by moving away from the second valve seat, and the second bias that biases the second valve body in the direction to close the second flow path
  • a stopper for pushing the second valve body to the other side in the axial direction, supported so as to be movable in the axial direction, and moving the first valve body through the first flow path by moving to the one side in the axial direction.
  • Kick push direction and a rod pushing the second valve body by the stopper portion in a direction to open the second flow path by moving in the other axial direction.
  • the first valve element opens the first flow path and the second valve element closes the second flow path.
  • the first valve element closes the first flow path.
  • the second valve body is controlled to the second state where the second flow path is opened, and the first and second valve bodies are controlled to be the third state where the first and second flow paths are closed.
  • the integrated valve includes a restricting portion that restricts the rod from moving to the other side in the axial direction in a state where the first valve body closes the first flow path and the second valve body opens the second flow path.
  • the position control of the two valves can be performed with the position where the movement of the rod in the other axial direction of the rod is regulated by the regulating unit as the origin.
  • the integrated valve comprised so that control of the opening degree of a 1st, 2nd valve body can be implemented, without using the position sensor which detects the position of a rod.
  • the opening degree is a scale indicating the degree of opening of the flow path between the valve body and the valve seat. For example, the opening degree is 100% when the valve body is fully opened, the opening degree is 0% when the valve body is fully closed, and the ratio indicating the opening area of the flow path as a percentage is the opening degree. .
  • the rod is moved to a position where the movement of the rod to the other side in the axial direction is restricted by the restricting portion, and the position where the movement of the rod is restricted by the restricting portion is the first and second valves.
  • Initialization as the origin when controlling the position of the body may be performed.
  • control device for controlling the integrated valve determines the amount of movement of the rod in one axial direction necessary to move the first valve body from the origin to a position at which the first valve body begins to open the first flow path.
  • the amount of movement in the axial direction of the rod required to move the second valve body from the origin to the position where the second valve body is closed by the second valve body from the origin is defined as the second movement amount.
  • a controller that controls the position of the first and second valve bodies by controlling the rod with an actuator based on the first and second control amounts stored in the memory. .
  • the manufacturing method of the control device is such that the first and second control amounts are read by the reading device from the display code portion where the first and second control amounts are displayed by codes in the integrated valve, and the read first and second control amounts are read.
  • a step of writing the second control amount to the memory by the writing device may be provided.
  • the first and second memories are stored in the memory of the control device corresponding to the integrated valve even if the manufacturing process of the control device and the manufacturing process of the integrated valve are performed at a remote location.
  • the control amount can be stored for each integrated valve.
  • 1st Embodiment it is the figure which showed the whole structure of the vehicle air conditioner which has an integrated valve as a flow control valve.
  • 1st Embodiment it is the figure which added the refrigerant
  • 1st Embodiment it is the figure which added the refrigerant
  • 1st Embodiment it is the figure which added the refrigerant
  • FIG. 1 is an overall configuration diagram of a vehicle air conditioner 10 having an integrated valve 30 as an integrated valve.
  • the vehicle air conditioner 10 is an air conditioner that is mounted on a hybrid vehicle and performs air conditioning in a vehicle interior.
  • the hybrid vehicle has a small amount of engine waste heat.
  • the same applies to an electric vehicle, and there is no waste heat itself in an electric vehicle. Therefore, it is difficult to perform heating using engine waste heat as in the engine vehicle. Therefore, in a hybrid vehicle or an electric vehicle, heating is performed using an electric heater or the like.
  • a heat pump that heats blown air by heat exchange with a refrigerant. .
  • the vehicle air conditioner 10 of the present embodiment includes the refrigeration cycle 11 shown in FIG. 1 that can be operated in a plurality of operation modes such as heating and cooling by switching the refrigerant circulation path.
  • This refrigeration cycle 11 is a subcritical cycle in which the high-pressure side refrigerant pressure does not exceed the critical pressure of the refrigerant.
  • the vehicle air conditioner 10 has three operation modes: a cooling mode for cooling the passenger compartment, a heating mode for heating the passenger compartment, and a dehumidifying heating mode for heating while dehumidifying the passenger compartment. It is alternatively switched to the operating mode.
  • the vehicle air conditioner 10 includes a vehicle interior air conditioning unit 12 disposed in the vehicle interior, a compressor 14, an expansion valve 16, an outdoor heat exchanger 18 for exchanging heat between the outside air and the refrigerant, and a refrigerant flow passage according to an electric signal.
  • a vehicle interior air conditioning unit 12 disposed in the vehicle interior
  • a compressor 14 an expansion valve 16 for exchanging heat between the outside air and the refrigerant
  • a refrigerant flow passage according to an electric signal are provided with an electromagnetic on-off valve 20, an evaporation pressure control valve 22, a gas-liquid separator 24 for separating gas and liquid, an integrated valve 30 and the like.
  • the vehicle interior air conditioning unit 12 is disposed inside the instrument panel at the forefront of the vehicle interior.
  • the vehicle interior air conditioning unit 12 includes an electric blower 121, an indoor evaporator 122 disposed on the downstream side of the air flow with respect to the blower 121, an indoor condenser 123 disposed on the downstream side of the air flow with respect to the indoor evaporator 122, and indoor evaporation.
  • the heater core 124, the air mix door 125, etc. which are arrange
  • the vehicle interior air conditioning unit 12 then blows out the air conditioned by the indoor evaporator 122, the indoor condenser 123, and the heater core 124 into the vehicle interior.
  • the blower 121 is, for example, a centrifugal blower, and sucks outside air that is air outside the vehicle interior or inside air that is air inside the vehicle interior and blows out the sucked air.
  • the air blown out from the blower 121 flows to the indoor evaporator 122.
  • the indoor evaporator 122 is disposed in the vehicle interior air conditioning unit 12.
  • the indoor evaporator 122 heat-exchanges the air passing through the indoor evaporator 122 and the refrigerant circulating in the refrigeration cycle 11, evaporates the refrigerant by the heat exchange, and cools the air passing therethrough. That is, the indoor evaporator 122 is an evaporator that cools the air blown into the vehicle interior.
  • the indoor evaporator 122 is refrigerated together with the indoor condenser 123, the compressor 14, the expansion valve 16, the outdoor heat exchanger 18, the electromagnetic on-off valve 20, the evaporation pressure control valve 22, the gas-liquid separator 24, the integrated valve 30, and the like. Cycle 11 is configured.
  • the refrigerant inlet 122 a of the indoor evaporator 122 is connected to the outlet 30 c of the integrated valve 30, and the refrigerant outlet 122 b of the indoor evaporator 122 is connected to the inlet side of the gas-liquid separator 24 via the evaporation pressure control valve 22. . That is, in the indoor evaporator 122, the refrigerant flows in from the refrigerant inlet 122a and flows out from the refrigerant outlet 122b.
  • the air is guided downstream of the indoor condenser 123 by bypassing the heating passage 12 a provided with the indoor condenser 123 and the heater core 124, and the indoor condenser 123 and the heater core 124.
  • a bypass passage 12 b is formed on the downstream side of the air flow with respect to the indoor evaporator 122.
  • the air flowing through the heating passage 12a is heated by one or both of the indoor condenser 123 and the heater core 124.
  • the air mix door 125 opens and closes the heating passage 12a and the bypass passage 12b, and the air volume ratio at which the air from the indoor evaporator 122 flows into the heating passage 12a and the bypass passage 12b is set to the rotational position of the air mix door 125. Adjust accordingly.
  • the indoor condenser 123 heat-exchanges the air passing through the indoor condenser 123 and the refrigerant circulating in the refrigeration cycle 11, condensing the refrigerant by the heat exchange, and heats the air passing therethrough. That is, it is an indoor capacitor.
  • the refrigerant outlet 14a of the compressor 14 is connected to the refrigerant inlet side of the indoor condenser 123, and the refrigerant flowing out of the indoor condenser 123 is connected to the outdoor heat exchanger 18 on the refrigerant outlet side of the indoor condenser 123.
  • a first refrigerant passage 111 leading to is connected. In the cooling mode, the heating passage 12a is closed by the air mix door 125, and in this case, heat exchange between the air and the refrigerant is not performed.
  • the heater core 124 is a heater that heats the air passing through the heater core 124 using waste heat of the engine that outputs the driving force for traveling the vehicle.
  • Engine cooling water that outputs vehicle driving force is circulated in the heater core 124, and the heater core 124 causes heat exchange between the air passing through the heater core 124 and the engine cooling water, thereby the air. Heat.
  • the compressor 14 is disposed in the engine room, sucks refrigerant from the refrigerant suction port 14b in the refrigeration cycle 11, compresses the refrigerant, and discharges the refrigerant from the refrigerant discharge port 14a.
  • the compressor 14 is configured as an electric compressor driven by an electric motor. The discharge flow rate of the refrigerant discharged from the compressor 14 changes according to the rotational speed of the compressor 14, and the rotational speed is changed by a control signal output from the electronic control unit.
  • the expansion valve 16 is disposed in the first refrigerant passage 111, and is configured so that the passage area of the first refrigerant passage 111 can be changed.
  • the expansion valve 16 is a decompression device that decompresses the refrigerant flowing out of the indoor condenser 123.
  • the expansion valve 16 is an electric variable throttle mechanism that includes a valve body that can change the throttle opening degree and a stepping motor that changes the throttle opening degree of the valve body. is there. Therefore, the expansion valve 16 increases or decreases the throttle opening (also simply referred to as the opening) of the expansion valve 16 according to a control signal output from the electronic control unit.
  • the expansion valve 16 expands the refrigerant under reduced pressure by restricting the refrigerant that passes through the expansion valve 16 and flows into the outdoor heat exchanger 18.
  • the expansion valve 16 allows the refrigerant to pass through without being decompressed and expanded when the expansion valve 16 is fully opened.
  • the expansion valve 16 blocks the refrigerant flow when the expansion valve 16 is fully closed, that is, when the throttle opening is zero. That is, the refrigerant is prevented from flowing into the outdoor heat exchanger 18.
  • the inlet side of the outdoor heat exchanger 18 is connected to the outlet side of the expansion valve 16.
  • the outdoor heat exchanger 18 is disposed in the engine room, and exchanges heat between the vehicle traveling wind blown from a blower fan (not shown) and the refrigerant circulating in the outdoor heat exchanger 18.
  • the outdoor heat exchanger 18 functions as an evaporator that evaporates the refrigerant and exerts an endothermic effect in the heating mode or the like, and functions as a radiator that radiates the refrigerant in the cooling mode or the like.
  • the outlet side of the outdoor heat exchanger 18 is integrated with the second refrigerant passage 112 that guides the refrigerant flowing out of the outdoor heat exchanger 18 to the inlet side of the gas-liquid separator 24 and the refrigerant flowing out of the outdoor heat exchanger 18.
  • a third refrigerant passage 113 that leads to the second inlet 30b of the valve 30 is connected.
  • the electromagnetic opening / closing valve 20 is disposed in the second refrigerant passage 112.
  • the electromagnetic on-off valve 20 is an electromagnetic valve that opens and closes the second refrigerant passage 112, and its operation is controlled by a control signal output from the electronic control device.
  • the refrigeration cycle 11 is provided with a fourth refrigerant passage 114 that guides the refrigerant before reaching the inlet side of the expansion valve 16 in the first refrigerant passage 111 to the first inlet 30a of the integrated valve 30.
  • the fourth refrigerant passage 114 is a refrigerant passage that guides the refrigerant flowing out of the indoor condenser 123 to the integrated valve 30 by bypassing the expansion valve 16 and the outdoor heat exchanger 18.
  • the evaporation pressure control valve 22 is disposed upstream of the connection point to which the second refrigerant passage 112 is connected in the refrigerant flow path from the refrigerant outlet 122b of the indoor evaporator 122 to the gas-liquid separator 24.
  • the evaporating pressure control valve 22 is a mechanical depressurizing device that depressurizes the refrigerant passing through the evaporating pressure control valve 22 by a mechanical operation therein.
  • the evaporation pressure control valve 22 holds the refrigerant pressure at the inlet side of the evaporation pressure control valve 22, that is, the refrigerant outlet 122b of the indoor evaporator 122 at a predetermined value, in other words, holds the refrigerant pressure constant. Then, the refrigerant passing through the evaporation pressure control valve 22 is decompressed.
  • the refrigerant pressure on the inlet side of the evaporation pressure control valve 22 is set so that condensation in the indoor evaporator 122 can be
  • the gas-liquid separator 24 is an accumulator that separates the gas-liquid of the refrigerant that has flowed into the accumulator 24 and stores excess refrigerant in the refrigeration cycle 11.
  • a refrigerant suction port 14 b of the compressor 14 is connected to the gas phase refrigerant outlet of the gas-liquid separator 24. Therefore, the gas-liquid separator 24 functions to prevent the liquid phase refrigerant from being sucked into the compressor 14 and prevent liquid compression in the compressor 14.
  • the integrated valve 30 includes a first flow rate control unit 301 and a second flow rate control unit 302. And the 1st flow control part 301 adjusts the flow volume of the refrigerant which flowed in from the 1st inflow port 30a, carries out decompression expansion of the refrigerant, and flows it into outflow port 30c.
  • the second flow rate control unit 302 adjusts the flow rate of the refrigerant flowing in from the second inflow port 30b, decompresses and expands the refrigerant, and flows it to the outflow port 30c. That is, the integrated valve 30 is an integrated type integrated valve in which two pressure reducing valves are integrated. The structure of the integrated valve 30 will be described later.
  • the integrated valve 30 can set one or both of the first flow rate control unit 301 and the second flow rate control unit 302 to a shut-off state that shuts off the refrigerant flow, that is, a fully closed state.
  • the refrigerant does not flow from both the part 301 and the second flow rate control part 302 to the outlet 30c at the same time.
  • the refrigerant flow of the refrigeration cycle 11 is switched according to each operation mode described above. Therefore, the operation mode of the vehicle air conditioner 10 is also the operation mode of the refrigeration cycle 11 as it is.
  • the electronic control unit that controls the air conditioning of the vehicle air conditioner 10 opens the second refrigerant passage 112 by opening the electromagnetic on-off valve 20. Further, the opening degree of the expansion valve 16 is controlled to the target opening degree, and the expansion valve 16 is brought into a throttle state in which the refrigerant flowing out from the indoor condenser 123 is decompressed and then flowed to the outdoor heat exchanger 18. Further, the first flow rate control unit 301 of the integrated valve 30 is fully closed as shown in Table 1 below, thereby blocking the fourth refrigerant passage 114 and the second flow rate control unit 302 is also fully closed. Thus, the refrigerant is prevented from flowing into the indoor evaporator 122. In Table 1 below, the fully closed state is described as “closed”, and the state where the throttle opening is controlled by opening the valve is described as “control”.
  • FIG. 2 is a diagram in which the refrigerant flow in the heating mode is added to FIG.
  • the compressor 14 compresses the refrigerant sucked from the outdoor heat exchanger 18 through the gas-liquid separator 24 and then discharges it to the indoor condenser 123.
  • the outdoor heat exchanger 18 functions as a heat absorption side heat exchanger that absorbs the heat of the outside air into the refrigerant that has flowed into the outdoor heat exchanger 18.
  • the electronic control unit closes the bypass passage 12b by the air mix door 125, so that the entire flow rate of the blown air after passing through the indoor evaporator 122 passes through the heating passage 12a. .
  • the high-temperature and high-pressure refrigerant compressed by the compressor 14 flows into the indoor condenser 123, and the heat of the high-temperature and high-pressure refrigerant is radiated to the blown air by the indoor condenser 123 and the heater core. 124 causes the air to be heated. By heating the blown air thus heated into the vehicle interior, the vehicle interior is heated.
  • the dehumidifying heating mode of the vehicle air conditioner 10 will be described.
  • the window glass becomes cloudy, so it is necessary to dehumidify the vehicle interior.
  • dehumidification and heating must be performed in parallel. Therefore, the dehumidifying and heating mode is selected to perform dehumidification and heating in parallel.
  • the electronic control unit opens the second refrigerant passage 112 by opening the electromagnetic on-off valve 20 in the same manner as in the heating mode. Further, the opening degree of the expansion valve 16 is controlled to the target opening degree, and the expansion valve 16 is brought into a throttle state in which the refrigerant flowing out from the indoor condenser 123 is decompressed and then flowed to the outdoor heat exchanger 18. Further, the second flow rate controller 302 of the integrated valve 30 is fully closed as shown in Table 1 above, thereby preventing the refrigerant from flowing from the outdoor heat exchanger 18 to the indoor evaporator 122.
  • the first flow rate control unit 301 of the integrated valve 30 is opened to adjust the throttle opening, thereby opening the fourth refrigerant passage 114. Then, the refrigerant flowing out of the indoor condenser 123 is decompressed, and the decompressed refrigerant having a low temperature is caused to flow into the indoor evaporator 122.
  • FIG. 3 is a diagram in which the refrigerant flow in the dehumidifying heating mode is added to FIG. In the dehumidifying and heating circulation path indicated by the arrow ARdh in FIG.
  • the refrigerant discharged from the compressor 14 flows to the indoor condenser 123, and from the indoor condenser 123, the expansion valve 16, the outdoor heat exchanger 18, and the electromagnetic on-off valve 20, the gas-liquid separator 24 flows in that order, and the indoor condenser 123 flows in the order of the first flow rate control unit 301 of the integrated valve 30, the indoor evaporator 122, the evaporation pressure control valve 22, and the gas-liquid separator 24.
  • the refrigerant merged in the gas-liquid separator 24 returns from the gas-liquid separator 24 to the compressor 14.
  • the outdoor heat exchanger 18 functions as a heat absorption side heat exchanger in the same manner as the heating circulation path described above.
  • the electronic control device adjusts the rotational position of the air mix door 125 in order to adjust the temperature of the air blown into the passenger compartment.
  • the dehumidifying heating mode similarly to the heating mode, the high-temperature and high-pressure refrigerant compressed by the compressor 14 flows to the indoor condenser 123, and the blown air from the blower 121 flows to the indoor condenser 123 and the heater core 124. Guided by the air mix door 125. And the ventilation air heated with the indoor condenser 123 and the heater core 124 blows off into a vehicle interior, and heating of a vehicle interior is implement
  • the refrigerant flowing out of the indoor condenser 123 is decompressed by the first flow rate control unit 301 of the integrated valve 30, and the decompressed and cooled refrigerant flows into the indoor evaporator 122. Be made. Then, the blown air passes through the indoor evaporator 122 in the vehicle interior air conditioning unit 12. Thereby, since the water vapor
  • the cooling mode of the vehicle air conditioner 10 will be described.
  • the electronic control unit fully closes the first flow rate control unit 301 of the integrated valve 30 as shown in Table 1 as in the heating mode.
  • the expansion valve 16 is fully opened to the maximum opening.
  • the second refrigerant passage 112 is shut off by closing the electromagnetic opening / closing valve 20.
  • the second flow rate control unit 302 of the integrated valve 30 is opened to adjust the throttle opening, thereby opening the third refrigerant passage 113.
  • FIG. 4 is a diagram in which the refrigerant flow in the cooling mode is added to FIG.
  • the refrigerant discharged from the compressor 14 includes the indoor condenser 123, the expansion valve 16, the outdoor heat exchanger 18, the second flow rate control unit 302 of the integrated valve 30,
  • the indoor evaporator 122, the evaporation pressure control valve 22, and the gas-liquid separator 24 flow in this order and return to the compressor 14.
  • the evaporation pressure control valve 22 allows the refrigerant from the indoor evaporator 122 to flow to the gas-liquid separator 24 with almost no pressure reduction.
  • the outdoor heat exchanger 18 functions as a heat radiation side heat exchanger that radiates the heat of the refrigerant flowing into the outdoor heat exchanger 18 to the outside air.
  • the electronic control unit closes the heating passage 12a by the air mix door 125, whereby the entire flow rate of the blown air after passing through the indoor evaporator 122 flows to the bypass passage 12b. And since blowing air does not flow into the heating channel
  • the refrigerant circulates as indicated by the arrow ARc. Therefore, the high-temperature and high-pressure refrigerant compressed by the compressor 14 is cooled by the outdoor heat exchanger 18, and the cooled refrigerant is supplied to the integrated valve 30.
  • the flow to the second flow rate control unit 302 is reduced in pressure by the second flow rate control unit 302.
  • the decompressed low-temperature and low-pressure refrigerant flows into the indoor evaporator 122.
  • the air blown from the blower 121 passes through the indoor evaporator 122 in the vehicle interior air conditioning unit 12. As a result, the air blown from the blower 121 is cooled by the indoor evaporator 122 and then blown out into the vehicle interior to cool the vehicle interior.
  • FIG. 5 is a cross-sectional view of the integrated valve 30 taken along a cross section including the rod core CL ⁇ b> 1 that is the central axis of the integrated valve 30, and is a diagram illustrating the configuration of the integrated valve 30.
  • the integrated valve 30 includes a body portion 32, a first valve body 34, a first spring 36, a second valve body 38, a second spring 40, a push rod 42, plug portions 44 and 46, and an actuator. 48 etc.
  • the body portion 32 is formed in a substantially cylindrical shape, and includes a protruding portion 50 that protrudes radially outward with the rod center CL1 as the center.
  • the protrusion 50 has a first inlet 30a and a second inlet 30b that are opened radially outward.
  • the first inflow port 30a is disposed on one axial side with respect to the second inflow port 30b.
  • the body portion 32 includes an outlet 30c that opens outward in the radial direction.
  • the outlet 30c is provided between the first and second inlets 30a and 30b and on the opposite side of the rod center CL1 from the first and second inlets 30a and 30b.
  • a coolant channel 60 is formed between the first inlet 30a and the outlet 30c.
  • the refrigerant channel 60 includes an inlet channel 61, an intermediate channel 62, an outlet channel 63, and a throttle channel 64.
  • the inlet channel 61 is formed between the first inlet 30a side and the rod center CL1 side.
  • the intermediate flow path 62 is formed on the rod center CL1 side in the inlet flow path 61.
  • the outlet channel 63 is formed between the outlet 30c side and the rod center CL1 side.
  • the throttle channel 64 is formed to communicate between the intermediate channel 62 and the outlet channel 63.
  • the throttle channel 64 is formed so that the cross section of the channel has a circular shape centered on the rod center CL1.
  • the channel cross-sectional area of the throttle channel 64 is smaller than the channel cross-sectional area of the intermediate channel 62 and the channel cross-sectional area of the outlet channel 63.
  • a first valve body storage chamber 65 is formed on one side of the body portion 32 in the axial direction with respect to the intermediate flow path 62.
  • the first valve body storage chamber 65 forms an opening 65 a that opens to one side in the axial direction of the body portion 32, and communicates with the intermediate flow path 62.
  • the opening 65 a is closed by the stopper 44.
  • the plug portion 44 is formed with a protruding portion 44a that protrudes to the other axial side along the rod center CL1.
  • a refrigerant flow path 70 is formed between the second inlet 30b and the outlet 30c.
  • the refrigerant flow path 70 includes an inlet flow path 71, an intermediate flow path 72, a throttle flow path 73, and an outlet flow path 63.
  • the inlet channel 71 is formed between the second inlet 30b side and the rod center CL1 side.
  • the intermediate flow path 72 is formed along the rod center CL1 from the inlet core 71 to the axial direction one side from the rod center CL1 side.
  • the throttle channel 73 is formed so as to communicate between the intermediate channel 72 and the outlet channel 63.
  • the throttle channel 73 is formed so that the channel cross section is circular with the rod center CL1 as the center.
  • the channel cross-sectional area of the throttle channel 73 is smaller than the channel cross-sectional area of the intermediate channel 72 and the channel cross-sectional area of the outlet channel 63.
  • a second valve body storage chamber 66 is formed on the other axial side of the body portion 32 with respect to the intermediate flow path 72.
  • the second valve body storage chamber 66 forms an opening 66 a that opens to the other axial side of the body portion 32 and communicates with the intermediate flow path 72.
  • the opening 66a is closed by a plug portion 46 as a restricting portion.
  • the plug portion 46 is formed with a protruding portion 46a that protrudes to one side in the axial direction along the rod center CL1.
  • the protrusion 46 a constitutes a support portion that supports the push rod 42.
  • the plug portion 46 is formed with a through hole 46b penetrating along the rod core CL1.
  • a female screw 46c is formed in the through hole 46b in the axial direction.
  • the plug portion 46 is provided with a concave portion 46 d that is recessed radially inward on the outer peripheral side thereof.
  • a ring member 46e is fitted in the recess 46d.
  • the ring member 46 e seals between the plug portion 46 and the body portion 32. This prevents the refrigerant from leaking from the second valve body storage chamber 66 through the gap between the plug portion 46 and the body portion 32.
  • the push rod 42 is disposed such that its axis (that is, the rod center CL1) coincides with the central axis of the body portion 32.
  • the push rod 42 is supported by the body portion 32 so as to be movable in the axial direction.
  • the push rod 42 has a through hole in the intermediate channel 62, the throttle channel 64, the outlet channel 63, the throttle channel 73, the intermediate channel 72, the second valve body storage chamber 66, and the plug portion 46. It penetrates 46b.
  • the other side of the push rod 42 in the axial direction protrudes from the through hole 46 b of the plug portion 46 to the other side in the axial direction.
  • a male screw 42 a is formed on the outer peripheral side of the push rod 42. The male screw 42 a meshes with the female screw 46 c of the plug portion 46.
  • a stopper portion 42c is provided on one side in the axial direction of the push rod 42 with respect to the male screw 42a.
  • the stopper portion 42 c is formed in an annular shape that protrudes radially outward from the push rod 42.
  • the stopper portion 42c constitutes a support portion that supports the second valve body 38 from the other side in the axial direction.
  • the first valve body 34 includes a valve body 34a and a valve body stopper portion 34b.
  • the first valve body 34 is disposed in the intermediate flow path 62.
  • the valve body 34a is formed in a columnar shape centered on the rod center CL1.
  • a tapered portion 34c is formed on the other axial side of the valve body 34a.
  • the taper portion 34c has a gradually decreasing radial dimension around the rod center CL1 from one axial side to the other axial side.
  • the tapered portion 34c of the valve main body 34a is disposed on one axial side with respect to the first valve seat 64a.
  • the first valve body 34 opens and closes the refrigerant channel 85 (that is, the refrigerant channel 60) (see FIGS. 9A and 9B).
  • the refrigerant channel 85 is a refrigerant channel between the first valve body 34 and the first valve seat 64a.
  • the first valve seat 64 a is disposed in the refrigerant flow path 60. Specifically, the first valve seat 64 a is a forming part that forms an opening on one side in the axial direction of the throttle channel 64 in the body part 32. That is, the first valve seat 64 a is formed in an annular shape that surrounds the opening on the one axial side of the throttle channel 64.
  • the valve main body 34a is formed with a hole 34d that opens to the other axial side. One side of the push rod 42 in the axial direction is fitted into the hole 34d.
  • the valve body stopper portion 34 b is disposed in the first valve body storage chamber 65.
  • the valve body stopper part 34b is arrange
  • the valve body stopper part 34b is formed in the cylindrical shape centering on the rod center CL1, and the other axial side is closed by the cover part 34e.
  • the valve body stopper portion 34b has a lid portion 34e coupled to the valve body 34a.
  • the lid portion 34e is formed with a pressure equalizing hole 34f communicating in the axial direction.
  • the pressure equalizing holes 34f allow the refrigerant to move from the inside to the outside of the valve body stopper portion 34b, or allow the refrigerant to move from the outside to the inside of the valve body stopper portion 34b.
  • the first spring 36 is disposed between the lid part 34e and the plug part 44 of the valve body stopper part 34b.
  • the first spring 36 is a first biasing portion that biases the first valve body 34 toward the other axial side with respect to the plug portion 44.
  • the first spring 36 is a first load application unit that applies a force to the first valve body 34 to press the first valve body 34 toward the other side in the axial direction.
  • the first spring 36, the push rod 42, the first valve body 34, and the first valve seat 64a control the first flow rate control that controls the flow rate of the refrigerant passing through the refrigerant flow path 85.
  • Part 301 is configured.
  • the second valve body 38 includes a valve body 38a and a valve body stopper portion 38b.
  • the second valve body 38 is disposed in the intermediate flow path 72.
  • the valve body 38a is formed in a cylindrical shape having a through hole 38f with the rod center CL1 as the center.
  • a push rod 42 passes through the through hole 38f of the valve body 38a.
  • Ring members 38g and 38h are disposed in the through hole 38f.
  • Each of the ring members 38g and 38h is formed in an annular shape so as to surround the push rod 42 from the outer peripheral side.
  • the ring member 38g is disposed on one side in the axial direction with respect to the ring member 38h.
  • the ring members 38g and 38h are formed in a U-shaped cross section.
  • the ring members 38g and 38h seal between the push rod 42 and the valve body 38a.
  • the second valve body 38 closes the refrigerant flow path 86 (that is, the refrigerant flow path 70)
  • the second valve body is accommodated from the throttle flow path 73 through the gap between the push rod 42 and the valve body 38a.
  • the refrigerant is prevented from flowing into the chamber 66.
  • the refrigerant flow path 86 is a refrigerant flow path formed between the second valve body 38 and the second valve seat 73a.
  • a tapered portion 38c is formed on one side of the valve body 38a in the axial direction.
  • the taper portion 38c has a gradually decreasing radial dimension around the rod center CL1 from the other axial side toward the one axial side.
  • the tapered portion 38c of the valve body 38a is disposed on the other side in the axial direction with respect to the second valve seat 73a.
  • the second valve seat 73a is disposed in the refrigerant flow path 70.
  • the second valve seat 73 a is a forming part that forms an opening on the other axial side of the throttle channel 73 in the body part 32. That is, the second valve seat 73 a is formed in an annular shape surrounding the opening on the other axial side of the throttle channel 73.
  • the valve main body 38a is formed with a through hole 38f penetrating in the axial direction. The push rod 42 passes through the through hole 38f.
  • the valve body stopper portion 38 b is disposed in the second valve body storage chamber 66.
  • the valve body stopper portion 38b is disposed on the other side in the axial direction with respect to the valve body 38a.
  • the valve body stopper portion 38b is formed in a cylindrical shape centered on the rod center CL1, and one axial side thereof is closed by a lid portion 38d.
  • the valve body stopper portion 38b has a lid portion 38d coupled to the valve body 38a.
  • a pressure equalizing hole 38e communicating with the axial direction is formed in the lid portion 38d.
  • the pressure equalizing hole 38e allows the refrigerant to move from the inside to the outside of the valve body stopper portion 38b, or allow the refrigerant to move from the outside to the inside of the valve body stopper portion 38b.
  • the second valve body 38 is disposed on the heaven region improvement side with respect to the first valve body 34.
  • the second spring 40 is disposed between the lid portion 38d of the valve body stopper portion 38b and the plug portion 46.
  • the second spring 40 is a second urging portion that urges the second valve body 38 toward one side in the axial direction with respect to the plug portion 46.
  • the second spring 40 is a second load operating portion that applies a force to the second valve body 38 to press the second valve body 38 toward one side in the axial direction.
  • the second spring 40, the push rod 42, the second valve seat 73a, and the second valve body 38 control the refrigerant flow rate through the refrigerant flow path 86, and the second flow rate control unit 302. Is configured.
  • the actuator 48 is a stepping motor disposed on the other side in the axial direction with respect to the body portion 32.
  • the actuator 48 includes a can member 80, a rotor 81, and a stator 82.
  • the rotor 81 is formed in a cylindrical shape centered on the rod center CL1.
  • the other side of the push rod 42 in the axial direction is fitted into the hollow portion of the rotor 81. Thereby, the rotor 81 is supported by the push rod 42.
  • the rotor 81 rotates in synchronization with the rotating magnetic field generated from the stator 82 to generate a rotational force that rotates the push rod 42.
  • the can member 80 is formed in a cylindrical shape covering the rotor 81 from the outside in the radial direction centered on the rod core CL1, and the other axial side is closed by a lid 80a.
  • the stator 82 is disposed radially outside the can member 80 with the rod center CL1 as the center.
  • the stator 82 is composed of a plurality of stator coils. The plurality of stator coils generate a rotating magnetic field applied to the rotor 81 by a current output from the electronic control unit 90 (see FIG. 2). Details of the electronic control unit 90 will be described later.
  • a code display portion 32b (see FIG. 6) is formed on the outer surface 32a of the body portion 32 of the present embodiment by printing or the like.
  • the code display unit 32b displays control information used for position control of the push rod 42 as a code.
  • a QR code registered trademark
  • the electronic control unit 90 includes a microcomputer 91, a memory 92, and the like.
  • the memory 92 includes a RAM, a flash memory, and the like.
  • the microcomputer 91 executes the air conditioning control process according to the computer program stored in the memory 92.
  • the microcomputer 91 controls the actuator 48 of the integrated valve 30 together with the compressor 14, the expansion valve 16, the electromagnetic on-off valve 20, and the like as the air conditioning control process is executed.
  • the electronic control unit 90 rotates the rotor 81 of the actuator 48 in the forward direction. For this reason, the rotor 81 rotates in the forward direction together with the push rod 42. Accordingly, the push rod 42 moves to the one side in the axial direction in a state where the male screw 42a is engaged with the female screw 46c of the plug portion 46.
  • the electronic control unit 90 rotates the rotor 81 of the actuator 48 in the negative direction. For this reason, the rotor 81 rotates in the negative direction together with the push rod 42. Accordingly, the push rod 42 moves to the other side in the axial direction in a state where the male screw 42 a is engaged with the female screw 46 c of the plug portion 46.
  • the first spring 36 is The first valve body 34 is biased to the other side in the axial direction by the elastic force. For this reason, the first valve body 34 is pressed against the first valve seat 64 a by the elastic force of the first spring 36. For this reason, the taper part 34c of the 1st valve body 34 contacts the 1st valve seat 64a, and it will be in the state which the refrigerant flow path 85 (refer FIG. 9A and FIG. 9B) fully closed.
  • the second spring 40 urges the second valve body 38 toward one side in the axial direction by its elastic force. For this reason, the second valve body 38 is pressed against the second valve seat 73 a by the elastic force of the second spring 40. For this reason, the taper part 38c of the 2nd valve body 38 contacts the 2nd valve seat 73a, and the refrigerant
  • the electronic control unit 90 rotates the rotor 81 of the actuator 48 in the forward direction. For this reason, the rotor 81 rotates in the forward direction together with the push rod 42. Accordingly, the push rod 42 moves to the one side in the axial direction in a state where the male screw 42a is engaged with the female screw 46c of the plug portion 46.
  • the push rod 42 moves to one side in the axial direction while sliding with respect to the ring members 38g and 38h, and presses the first valve body 34 to one side in the axial direction.
  • the first valve body 34 moves to the one side in the axial direction while the first valve body 34 opposes the elastic force of the first spring 36 with the second valve body 38 closing the refrigerant flow path 86.
  • the first valve body 34 is separated from the first valve seat 64a, and the opening degree of the first valve body 34 gradually increases.
  • the push rod 42 moves to the one side in the axial direction, the push rod 42 pushes the first valve body 34, and the refrigerant flow path 85 is fully opened, and the valve body stopper portion 34b comes into contact with the plug portion 44 to be in the first state.
  • the valve body 34 stops.
  • the push valve 42 presses the first valve body 34 toward one axial direction, so that the second valve body 38 fully closes the refrigerant flow path 86 and the first valve body in the refrigerant flow path 85.
  • the opening of 34 gradually increases. Thereby, the refrigerant
  • the electronic control unit 90 rotates the rotor 81 of the actuator 48 in the negative direction. For this reason, the rotor 81 rotates in the negative direction together with the push rod 42. Accordingly, the push rod 42 moves to the other side in the axial direction in a state where the male screw 42 a is engaged with the female screw 46 c of the plug portion 46.
  • the push rod 42 moves to the other side in the axial direction while sliding with respect to the ring members 38g and 38h. Accordingly, the first valve body 34 moves to the other side in the axial direction by the elastic force of the first spring 36. For this reason, the opening degree of the 1st valve body 34 in the refrigerant
  • the stopper portion 42c supports the second valve body 38 and moves the second valve body 38 to the other side in the axial direction. For this reason, the opening degree of the second valve body 38 in the refrigerant flow path 86 gradually increases from the state in which the second valve body 38 fully closes the refrigerant flow path 86. Thereafter, after the second valve body 38 is in a state where the refrigerant flow path 86 is fully opened, the valve body stopper portion 38b comes into contact with the plug portion 46 and the second valve body 38 stops. As described above, when the push rod 42 moves to the other side in the axial direction, the opening degree of the second valve body 38 in the refrigerant flow path 86 gradually increases with the first valve body 34 fully closed in the refrigerant flow path 85.
  • coolant flow path 70 increases.
  • the refrigerant is decompressed and expanded and discharged from the outlet 30c.
  • the electronic control unit 90 rotates the rotor 81 of the actuator 48 in the forward direction. For this reason, the rotor 81 rotates in the forward direction together with the push rod 42. Accordingly, the push rod 42 moves to the one side in the axial direction in a state where the male screw 42a is engaged with the female screw 46c of the plug portion 46.
  • the push rod 42 moves to one side in the axial direction while sliding with respect to the ring members 38g and 38h, and presses the second valve body 38 to one side in the axial direction. For this reason, the 2nd valve body 38 moves to the axial direction one side. Along with this, the opening degree of the second valve body 38 in the refrigerant flow path 86 gradually decreases. Thereafter, the second valve body 38 comes into contact with the second valve seat 73a, and the second valve body 38 is in a state where the refrigerant flow path 86 is fully closed.
  • the opening degree of the second valve body 38 in the refrigerant flow path 86 gradually increases with the first valve body 34 fully closing the refrigerant flow path 85. Get smaller. Thereby, the refrigerant
  • one axial direction side of the push rod 42 is the bottom portion of the hole portion 34d of the valve body 34a. Away from. At this time, the second valve body 38 fully opens the refrigerant flow path 86 and the first valve body 34 fully closes the refrigerant flow path 85.
  • the opening degree of the refrigerant flow path 86 by the second valve body 38 (reference A in FIG. 10) while the first valve body 34 fully closes the refrigerant flow path 85. (See) gradually decreases.
  • the second valve body 38 fully closes the refrigerant flow path 86. Furthermore, when the axial direction one side of the push rod 42 is moved, the state in which the first valve body 34 fully closes the refrigerant flow path 85 and the second valve body 38 fully closes the refrigerant flow path 86 is maintained. .
  • the first valve body 34 starts to open the refrigerant flow path 85. Further, when one side of the push rod 42 in the axial direction is moved, the opening degree of the refrigerant flow path 85 by the first valve body 34 (B in FIG. 10) with the second valve body 38 fully closing the refrigerant flow path 86. (See) gradually increases.
  • the opening is a scale indicating the degree of opening of the refrigerant flow path 85.
  • the opening degree is 100%
  • the opening degree is 0%
  • the ratio indicating the opening area as a percentage is defined as the opening.
  • the opening degree of the second valve body 38 is set to 100%, and when the second valve body 38 fully closes the refrigerant flow path 86, the second valve body 38
  • the opening degree of the second valve body 38 is defined as a ratio indicating the opening area of the refrigerant flow path 86 as a percentage with the opening degree set to 0%.
  • the second valve body 38 is assumed to be fully open to the refrigerant flow path 86.
  • the position 38 is the fully open position.
  • the second valve body 38 is assumed to be fully closed, and the position of the second valve body 38 is set to the fully closed position.
  • the first valve body 34 is in contact with the first valve seat 64a, the position of the first valve body 34 is set to the fully closed position, assuming that the first valve body 34 fully closes the refrigerant flow path 85.
  • the valve body stopper part 34b of the 1st valve body 34 is contacting the stopper part 44, the position of the 1st valve body 34 is made into a fully open position.
  • FIG. 8A is a flowchart showing a manufacturing procedure of the integrated valve 30.
  • the second valve body 38, the second spring 40, the ring members 38g and 38h, the push rod 42, and the like are arranged in the body portion 32.
  • the opening 66 a of the body part 32 is closed by the plug part 46.
  • the first valve body 34 and the first spring 36 are arranged in the body portion 32, and the opening portion 65 a of the body portion 32 is closed by the plug portion 44.
  • the integrated valve 30 excluding the actuator 48 is assembled.
  • the integrated valve 30 excluding the actuator 48 is referred to as an integrated valve assembly.
  • step 110 the position of the push rod 42 of the integrated valve assembly is initialized. Specifically, the push rod 42 is rotated in the negative direction, and the push rod 42 is moved to the other side in the axial direction. Along with this, the stopper portion 42c moves the second valve body 38 to the other side in the axial direction. Thereafter, in a state where the first valve body 34 fully closes the refrigerant flow path 85 and the second valve body 38 is fully opened, the second valve body 38 contacts the plug portion 46 and the second valve body 38 is axially moved. Movement to the other side is restricted. That is, the plug portion 46 restricts the push rod 42 from moving to the other side in the axial direction. In this way, the position where the plug rod 46 is restricted from moving to the other side in the axial direction is the origin. The origin is a reference position when opening control (that is, position control) of the first and second valve bodies 34 and 38 is performed.
  • the initialization for stopping the push rod 42 at the origin is completed in a state where the first valve body 34 fully closes the refrigerant flow path 85 and the second valve body 38 fully opens the refrigerant flow path 86.
  • step 120 in the integrated valve assembly, the specific position P1 of the push rod 42 that fully closes the refrigerant flow path 86 by the second valve body 38 is specified.
  • step 130 the specified position P2 of the push rod 42 in the integrated valve assembly is specified by the first valve body 34 where the refrigerant flow path 85 starts to open.
  • the first valve body 34 fully closes the refrigerant flow path 85
  • the second valve body 38 fully closes the refrigerant flow path 86
  • the second inlet 30b is a plug 100 as a jig.
  • air is blown to the first inlet 30a, and the push rod 42 is moved to one side in the axial direction while measuring the amount of air flowing from the outlet 30c with the flow meter 410.
  • the first valve body 34 is pushed in the axial direction by the push rod 42, and the first valve body 34 begins to separate from the first valve seat 64a. For this reason, the air amount starts to flow from the first inflow port 30a to the outflow port 30c from the state where the air amount does not flow from the first inflow port 30a to the outflow port 30c. ”(See FIG. 9B), it is assumed that the first valve body 34 starts to open the refrigerant flow path 85.
  • the position of the push rod 42 at the moment when the refrigerant flow path 85 by the first valve body 34 starts to open is defined as a specific position P2.
  • step 140 in the integrated valve assembly, a movement amount L1 (second movement amount) necessary to move the push rod 42 from the origin of the push rod 42 to the specific position P1, and the push rod 42 A movement amount L2 (first movement amount) necessary to move the push rod 42 from the origin to the specific position P2 is acquired (see FIG. 10).
  • step 150 the code display portion 32b indicating the control amounts S1 and S2 (first and second control amounts) corresponding to the movement amounts L1 and L2 of the push rod 42 is displayed on the outer surface 32a of the body portion 32. It is formed by printing or the like.
  • control amounts S1 and S2 are information indicating the rotation angle of the rotor 81 of the actuator 48.
  • the control amount S1 is a rotation angle of the rotor 81 that needs to be rotated to move the push rod 42 from the origin by the movement amount L1.
  • the control amount S2 is a rotation angle of the rotor 81 that needs to be rotated to move the push rod 42 from the origin by the movement amount L2.
  • step 160 the integrated valve 30 is assembled from the actuator 48 and the integrated valve assembly.
  • the integrated valve 30 acquires the control amounts S1 and S2 of the push rod 42 for each product, and the code display unit 32b indicating the acquired control amounts S1 and S2 is displayed on the body unit. It is formed on the outer surface 32a of 32 by printing or the like.
  • the manufacturing apparatus 400 includes a ROM writer 401 that writes data to a memory such as a flash memory, and a code reader 402 that reads control amounts S1 and S2 from a code display unit 32b.
  • control amounts S1 and S2 for each integrated valve 30 are read from the code display section 32b of the body section 32 of the integrated valve 30 by the code reader 402.
  • the ROM writer 401 writes the read control amounts S1 and S2 in the flash memory of the memory 92 of the electronic control unit 90.
  • control amounts S1 and S2 for each product of the integrated valve 30 are stored in the memory 92 of the electronic control unit 90.
  • FIG. 8B is a flowchart showing a valve opening control process.
  • the electronic control unit 90 executes the valve opening degree control process according to the flowchart of FIG. 8B.
  • the valve opening control process is started when the ignition switch of the automobile is turned on and the traveling engine is turned on.
  • step 200 the actuator 48 is controlled to initialize the position of the push rod 42. Specifically, the actuator 48 rotates the push rod 42 in the negative direction by a certain angle. As a result, the push rod 42 moves to the other side in the axial direction by a certain distance, the second valve body 38 contacts the plug portion 46, and the push rod 42 stops. That is, the push rod 42 stops at the position (that is, the origin) where the push rod 42 is restricted from moving to the other side in the axial direction. Therefore, the initialization for stopping the push rod 42 at the origin is completed with the first valve body 34 fully closed with the refrigerant flow path 85 and the second valve body 38 fully opened with the refrigerant flow path 86.
  • next step 210 it is determined whether or not a request for changing the opening degree of the first and second valve bodies of the integrated valve 30 has been received. At this time, when it is determined NO in Step 210 that no request for changing the opening degree of the first and second valve bodies 34 and 38 (hereinafter referred to as an opening degree changing request) is received, the process returns to Step 210. For this reason, the NO determination in step 210 is repeated until an opening change request is received. Thereafter, when an opening change request is received, YES is determined in step 210 and the process proceeds to step 220.
  • a position where the second valve body 38 is restricted from moving to the other side in the axial direction by the plug portion 46 in a state where the second valve body 38 fully opens the refrigerant flow path 86 is set as the origin, and the control amounts S1, S2 Based on the above, the actuator 48 is controlled to control the position of the push rod 42.
  • the rotation angle of the rotor 81 of the actuator 48 corresponds to the movement amount of the push rod 42
  • the rotation direction of the rotor 81 corresponds to the movement direction of the push rod 42.
  • the stepping motor as the actuator 48 is controlled so that the actual rotation angle of the rotor 81 approaches the target angle.
  • the opening degree of the 1st, 2nd valve bodies 34 and 38 can be brought close to a target opening degree.
  • the opening degree of the 1st, 2nd valve bodies 34 and 38 can be changed.
  • coolant amount which flows through one refrigerant flow path among the refrigerant flow paths 60 and 70 can be changed.
  • step 230 it is determined whether or not the traveling engine is turned off. If NO is determined in step 230 because the traveling engine is turned on, the process returns to step 210. For this reason, when the travel engine is turned on, the plug portion 46 restricts the push rod 42 from moving to the other side in the axial direction every time it is determined YES in Step 210 upon receiving an opening change request.
  • the position of the push rod 42 is controlled by controlling the actuator 48 based on the control amounts S1 and S2 with the position to be the origin as the origin. Thereby, the opening degree of the 1st, 2nd valve bodies 34 and 38 is changed.
  • Step 230 the execution of the valve opening degree control process is terminated.
  • the integrated valve 30 is disposed between the first inlet 30a, the second inlet 30b, and the outlet 30c, and the first inlet 30a and the outlet 30c.
  • 1 valve seat 64a and the 1st valve body 34 are provided.
  • the refrigerant flow path 60 (85) is closed when the first valve body 34 contacts the first valve seat 64a, and the refrigerant flow path 60 (85) is opened when the first valve body 34 moves away from the first valve seat 64a.
  • the integrated valve 30 includes a first spring 36 that biases a force toward the first valve body 34 in a direction in which the refrigerant flow path 85 is closed, and a second valve seat disposed between the second inlet 30b and the outlet 30c.
  • the refrigerant flow path 70 (86) is closed when the second valve body 38 comes into contact with the second valve seat 73a, and the refrigerant flow path 70 (86) is opened by moving away from the second valve seat 73a.
  • the integrated valve 30 includes a second spring 40 that urges a force to the second valve body 38 in a direction in which the refrigerant flow path 86 is closed, and a push rod 42.
  • the push rod 42 includes a stopper portion 42c, is supported so as to be movable in the axial direction, and pushes the first valve body 34 in the direction of opening the refrigerant flow path 85 by moving to the one side in the axial direction.
  • the second valve body 38 is pushed in the direction of opening the refrigerant flow path 70 by the stopper portion 42c.
  • a first state in which the first valve body 34 opens the refrigerant flow path 60 and the second valve body 38 closes the refrigerant flow path 70 as the push rod 42 moves in the axial direction.
  • a second state in which the valve body 34 closes the refrigerant flow path 60 and the second valve body 38 opens the refrigerant flow path 70, and the first and second valve bodies 34 and 38 pass through the refrigerant flow paths 60 and 70.
  • Each closed third state is implemented.
  • the second valve body 38 includes a plug portion 46 that restricts the push rod 42 from moving to the other side in the axial direction at a position where the refrigerant flow path 70 (86) is fully opened.
  • the push rod 42 is moved to a position where the movement of the shaft 42 to the other side in the axial direction is restricted, and the position where the movement of the push rod 42 is restricted by the plug portion 46 is determined by the first and second valve bodies 34, 38. Initializing the origin when controlling the position is performed.
  • the first and second positions with the position where the second valve body 38 fully opens the refrigerant flow path 86 and the movement of the push rod 42 toward the other side in the axial direction by the plug 46 is defined as the origin.
  • the position of the valve bodies 34 and 38 can be controlled.
  • the integrated valve 30 comprised so that control of the opening degree of the 1st, 2nd valve bodies 34 and 38 can be provided can be provided.
  • the electronic control device 90 that can control the opening degree of the first and second valve bodies 34 and 38 in the integrated valve 30, a method for manufacturing the electronic control device 90, and the vehicle air conditioner 10 can be provided. .
  • the second valve body 38 is disposed on the heaven region improvement side with respect to the first valve body 34.
  • the position of the push rod 42 is reset with the state where the valve body stopper portion 38b of the second valve body 38 is in contact with the plug portion 46 as the origin.
  • the valve body stopper part 38b of the 2nd valve body 38 is arrange
  • the occurrence of an error in the origin of the position of the push rod 42 caused by foreign matter such as wear powder of the compressor 14 being sandwiched between the valve body stopper portion 38b and the plug portion 46 can be suppressed.
  • the second valve body 38 when the position of the push rod 42 is initialized, the second valve body 38 must be pressed against the second spring 40 until the valve body stopper portion 38b comes into contact with the plug portion 46. Since the load is applied to the rod 42, the push rod 42 needs to be thickened. When the push rod 42 becomes thicker, it is necessary to increase the valve diameter in order to secure the flow path area, and the physique becomes larger due to the increase in the size of the second spring 40 and the like. When there are two valve bodies on the upper and lower sides, the second valve body 38, which is normally disposed on the upper side to allow the push rod 42 to pass therethrough, is made larger in diameter than the first valve body 34.
  • the first valve seat 64a has a smaller diameter and the push rod 42 has a smaller diameter. For this reason, if the load acting on the push rod 42 at the time of initialization is the same for both the first and second valve bodies 34, 38, the amount of increase in the push rod 42 diameter associated with the initialization is smaller in the second valve body 38. Thus, the physique can be made smaller than when the first valve body 34 is initialized.
  • control amounts S1 and S2 are read by the code reader 402 from the display code portion 32b in which the control amounts S1 and S2 are displayed as codes in the integrated valve 30, and the read control amounts S1 and S2 are read by the ROM writer 401. (Step S170). According to this, if the display code part 32b is provided in the integrated valve 30, even if it implements the manufacturing process of the electronic control apparatus 90 and the manufacturing process of the integrated valve 30 in the place away, it respond
  • FIG. 12 is a flowchart showing the valve opening degree control process of this embodiment. 12, the same reference numerals as those in FIG. 8B denote the same steps, and the description thereof is omitted.
  • the electronic control unit 90 executes the valve opening degree control process according to the flowchart of FIG.
  • the valve opening degree control process is executed when the ignition switch of the automobile is turned off and the traveling engine is turned off.
  • step 200 as in the first embodiment, the actuator 48 is controlled to initialize the position of the push rod 42.
  • step 240 it is determined whether or not the traveling engine is turned on (step 240). If NO is determined in step 240 because the traveling engine is turned off, the process returns to step 240. For this reason, as long as the traveling engine is turned off, the NO determination in step 240 is repeated.
  • step 210 it is determined whether an opening change request for changing the opening of the first and second valve bodies of the integrated valve 30 has been received.
  • the second valve body 38 is in the axially other side with the refrigerant flow path 86 fully opened, as in the first embodiment.
  • the position where the plug portion 46 is restricted from moving is set as the origin, and the position of the push rod 42 is controlled by controlling the actuator 48 based on the control amounts S1 and S2.
  • the opening degree of the 1st, 2nd valve bodies 34 and 38 is changed. Therefore, the amount of refrigerant flowing through one of the refrigerant channels 60 and 70 can be changed.
  • step 230 it is determined whether or not the traveling engine is turned off. If NO is determined in step 230 because the traveling engine is turned on, the process returns to step 210. For this reason, when the travel engine is turned on, the plug portion 46 restricts the push rod 42 from moving to the other side in the axial direction every time it is determined YES in Step 210 upon receiving an opening change request.
  • the position of the push rod 42 is controlled by controlling the actuator 48 based on the control amounts S1 and S2 with the position to be the origin as the origin. Thereby, the opening degree of the 1st, 2nd valve bodies 34 and 38 is changed. Thereafter, when the ignition switch of the automobile is turned off and the traveling engine is turned off, if the determination at step 230 is YES, the execution of the valve opening degree control process is terminated.
  • the first valve body 34 when the engine is turned off, the first valve body 34 fully closes the refrigerant flow path 85 and the second valve body 38 fully opens the refrigerant flow path 86. Then, the push rod 42 is moved to a position where the movement of the push rod 42 to the other side in the axial direction is restricted by the plug portion 46 and stopped, and the stopped position of the first and second valve bodies 34 and 38 is stopped. Initialization is performed with the origin when the position is controlled. Therefore, similarly to the first embodiment, the integrated valve 30, the electronic control device 90, and the vehicle air conditioner 10 configured to be able to perform the position control of the first and second valve bodies 34 and 38 are provided. be able to.
  • the vehicle air conditioner 10 includes the heater core 124.
  • the heater core 124 may not be provided.
  • the integrated valve 30 is connected to the refrigerant inlet 122a of the indoor evaporator 122 in the refrigeration cycle 11, but the location where the integrated valve 30 is provided in the refrigeration cycle 11 is limited to this. Not.
  • the fourth refrigerant passage 114 is connected to the first inlet 30a of the integrated valve 30, and the third refrigerant passage 113 is connected to the second inlet 30b.
  • the third refrigerant passage 113 may be connected to the first inlet 30a
  • the fourth refrigerant passage 114 may be connected to the second inlet 30b.
  • the integrated valve 30 is included in the vehicle air conditioner 10 mounted on the hybrid vehicle.
  • the integrated valve 30 is not limited to the hybrid vehicle, and may be used, for example, in an air conditioner for an electric vehicle. There is no problem. Since there is no engine in an electric vehicle, there is no heater core 124. Furthermore, the integrated valve 30 may be used for applications other than those for vehicles.
  • the vehicle air conditioner 10 is operated in one of the operation modes of the heating mode, the dehumidifying heating mode, and the cooling mode. There is no problem even if it is driven.
  • the simple dehumidifying mode the temperature of the air blown from the vehicle interior air conditioning unit 12 is adjusted so as to maintain the vehicle interior temperature. That is, the vehicle interior is simply dehumidified without cooling or heating.
  • the refrigerant of the refrigeration cycle 11 is circulated through the cooling circulation path shown in FIG.
  • the air mix door 125 is rotated from a rotation position that closes the heating passage 12a to a rotation position that is slightly opened, and after passing through the indoor evaporator 122. Part of the blown air is introduced into the heating passage 12a.
  • the present invention is not limited to this, and the first and second valve bodies 34 and 38 are shifted in the vertical direction. If the second valve body 38 is arranged on the top side of the first valve body 34, the push rod 42 is arranged so that the axial direction of the push rod 42 is inclined with respect to the top-and-bottom direction. May be.
  • the refrigerant channels 60 and 70 of the integrated valve 30 are the refrigerant channels through which the refrigerant flows is described, but instead, the refrigerant channel 60 of the integrated valve 30 is replaced.
  • 70 may be a flow path for circulating a fluid (for example, oil, water) other than the refrigerant.
  • initialization may be performed when the engine of the vehicle is started and when the engine of the vehicle is stopped.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Multiple-Way Valves (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

La présente invention concerne, dans une soupape intégrée (30) en association avec le déplacement axial d'une tige de poussée (42), un premier état, dans lequel un premier corps (34) de soupape ouvre un premier canal (60) et un second corps (38) de soupape ferme un second canal (70), un deuxième état dans lequel le premier corps (34) de soupape ferme le premier canal (60) et le second corps (38) de soupape ouvre le second canal (70), ainsi qu'un troisième état dans lequel les premier et second corps (34, 38) de soupape ferment les premier et second canaux (60, 70). On met en œuvre une initialisation, dans laquelle la tige de poussée (42) est déplacée vers une position au niveau de laquelle le déplacement de la tige de poussée (42) est limité par une partie obturateur (46), la position au niveau de laquelle le second corps (38) de soupape ouvre totalement le second canal (70) étant désignée comme le point de régulation d'origine pour les positions des premier et second corps (34, 38) de soupape.
PCT/JP2015/005441 2014-11-04 2015-10-29 Soupape intégrée, dispositif de régulation, procédé de fabrication d'un dispositif de régulation et dispositif embarqué WO2016072070A1 (fr)

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JP2014-224502 2014-11-04
JP2014224502A JP6455086B2 (ja) 2014-11-04 2014-11-04 統合弁、制御装置、制御装置の製造方法、および車載装置

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10293660B2 (en) 2015-02-04 2019-05-21 Denso Corporation Integrated valve and heat pump cycle
US10731770B2 (en) 2015-08-27 2020-08-04 Denso Corporation Electric flow control valve and actuator

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101875650B1 (ko) 2016-10-21 2018-07-06 현대자동차 주식회사 냉각유체 제어밸브 유닛, 및 이를 구비한 엔진시스템
JP6858145B2 (ja) * 2018-02-13 2021-04-14 太平洋工業株式会社 電動弁
JP7105489B2 (ja) * 2018-11-08 2022-07-25 株式会社不二工機 流路切換弁
WO2020158459A1 (fr) * 2019-01-31 2020-08-06 株式会社フジキン Dispositif de soupape, procédé de régulation de débit utilisant le dispositif de soupape, dispositif de commande de fluide, procédé de production de semi-conducteur et dispositif de production de semi-conducteur
JP7118435B2 (ja) 2019-08-02 2022-08-16 株式会社不二工機 流路切換弁

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JPH07217760A (ja) * 1994-02-07 1995-08-15 Noritz Corp 弁制御装置
EP1653132A1 (fr) * 2004-11-02 2006-05-03 Siemens Aktiengesellschaft Soupape à trois voies

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JP3033320B2 (ja) * 1992-02-07 2000-04-17 松下電器産業株式会社 二流体制御弁

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Publication number Priority date Publication date Assignee Title
JPH07217760A (ja) * 1994-02-07 1995-08-15 Noritz Corp 弁制御装置
EP1653132A1 (fr) * 2004-11-02 2006-05-03 Siemens Aktiengesellschaft Soupape à trois voies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10293660B2 (en) 2015-02-04 2019-05-21 Denso Corporation Integrated valve and heat pump cycle
US10731770B2 (en) 2015-08-27 2020-08-04 Denso Corporation Electric flow control valve and actuator

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