JP2015098949A - Heat exchange system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchange system capable of efficiently and stably cooling a heat source in both cooling and heating.SOLUTION: A heat exchanger performing heat exchange among an air conditioning refrigerant Y1, a cooling refrigerant Y2 and an air flow Y3 includes heat exchange amount adjustment means of adjusting a heat exchange amount between the air conditioning refrigerant Y1 and the cooling refrigerant Y2. The heat exchange amount adjustment means reduces the heat exchange amount between the air conditioning refrigerant Y1 and the cooling refrigerant Y2 when an air conditioning refrigerant circuit functions as cooling, and increases the heat exchange amount between the air conditioning refrigerant Y1 and the cooling refrigerant Y2 when the air conditioning refrigerant circuit functions as heating.

Description

  The present invention relates to a heat exchange system, and more particularly to a heat exchange system including a three-fluid heat exchanger.

  Regarding a conventional heat exchange system, Japanese Patent Laying-Open No. 2013-139251 (Patent Document 1) discloses a first coolant flowing from a first heat exchanger that performs a heat release action during cooling and a heat absorption action during heating in a refrigeration cycle in an air conditioner. And a three-fluid heat exchanger that simultaneously exchanges heat between the second coolant that cools the heat source and the air flow. Japanese Patent Laying-Open No. 2013-51099 (Patent Document 2) discloses a heat exchanger that performs heat exchange between a liquid fluid for controlling the temperature of a battery and a refrigerant for an air conditioning system.

JP 2013-139251 A JP 2013-51099 A

  Patent Document 1 describes that the first coolant flows through the first heat exchanger and the three-fluid heat exchanger in the same manner during both the heating operation and the cooling operation of the air conditioner. ing. In the first heat exchanger, the refrigerant flowing through the refrigeration cycle absorbs heat from the first coolant during heating and radiates heat to the first coolant during cooling. Since the amount of heat of the first coolant flowing through the three-fluid heat exchanger is different between cooling and heating, when heat exchange is performed in the same way between cooling and heating in the three-fluid heat exchanger, the heat source during cooling There was a problem that the cooling performance of was poor.

  The present invention has been made in view of the above problems, and a main object thereof is to provide a heat exchange system capable of efficiently and stably cooling a heat source both during cooling and during heating.

  The heat exchange system according to the present invention includes an air conditioning refrigerant circuit in which an air conditioning refrigerant circulates, a cooling refrigerant circuit in which a cooling refrigerant for cooling a heat source circulates, an air conditioning refrigerant, a cooling refrigerant, and air. And a heat exchanger for exchanging heat. The heat exchanger has heat exchange amount adjusting means for adjusting the heat exchange amount between the air conditioning refrigerant and the cooling refrigerant. The heat exchange amount adjusting means reduces the amount of heat exchange between the air conditioning refrigerant and the cooling refrigerant when the air conditioning refrigerant circuit functions as cooling, and the air conditioning refrigerant and the cooling refrigerant when the air conditioning refrigerant circuit functions as heating. Increase the amount of heat exchange with.

  According to the heat exchange system of the present invention, the heat source can be efficiently and stably cooled during both cooling and heating.

It is operation | movement explanatory drawing which shows the refrigerant circuit for an air conditioning which concerns on embodiment, and the refrigerant circuit for cooling. It is the schematic which shows the internal structure of the side tank of a three-fluid heat exchanger at the time of the heating operation of the refrigerant circuit for an air conditioning. It is the schematic which shows the internal structure of the side tank of a three fluid heat exchanger at the time of air_conditionaing | cooling operation of the refrigerant circuit for an air conditioning. It is a flowchart which shows operation | movement of the three-fluid heat exchanger which concerns on embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

  FIG. 1 is an operation explanatory diagram showing an air conditioning refrigerant circuit 100c and a cooling refrigerant circuit 100a according to the present embodiment. The heat exchange system 100 shown in FIG. 1 can be mounted on a vehicle such as an electric vehicle (EV), a hybrid vehicle (HV), or a plug-in hybrid vehicle (PHV) that includes a traveling motor as a driving source for traveling. . The heat exchange system 100 cools a device 5 (which is a device that generates heat, such as an inverter, a motor generator, or a battery, and is also referred to as a heat source 5) using a cooling refrigerant circuit 100a, and uses an air conditioning refrigerant circuit 100c. Cooling and heating operation is possible.

  The air conditioning refrigerant circuit 100c is a heat cycle for heating or cooling the passenger compartment. The air conditioning refrigerant circuit 100c includes a compressor 6, an indoor radiator 11, an electromagnetic valve 7, a heating throttle by an electric expansion valve 17 connected in parallel to the electromagnetic valve 7, and a heat exchanger (liquid cooling heat) serving as an outdoor heat exchanger. (Exchanger) 81, three-way valve 13, and accumulator 10. In addition, the air-conditioning refrigerant circuit 100 c includes a cooling throttle 14 and an evaporator 9 provided in a branch flow path branched from the three-way valve 13. Instead of the three-way valve 13, a solenoid valve may be used as is well known.

  The cooling refrigerant circuit 100a is a cooling circuit on the heat source 5 side. The cooling refrigerant Y2 indicated by the arrow Y2 flows through the cooling refrigerant circuit 100a in the order of the heat source 5, the pump 3, the heat exchanger 81, the three-way valve 2, and the heat source 5, and then flows through the heat source 5. The heat source 5 is cooled.

  Among the devices constituting the air conditioning refrigerant circuit 100c and the cooling refrigerant circuit 100a, the indoor radiator 11 and the evaporator 9 are disposed in an air conditioning case 21 in the vehicle interior (inside the instrument panel). The compressor 6, the heat exchanger 81, the blower 16, the heat source 5 and the like are disposed in the engine room.

  The compressor 6 is an electric fluid machine that is driven by an electric motor (not shown) and compresses and discharges the refrigerant to a high temperature and a high pressure. The compressor 6 can adjust the discharge amount of the refrigerant according to the operating rotational speed.

  The indoor radiator 11 is a heat exchanger for heat dissipation in which a refrigerant channel is formed, and is disposed on the downstream side of the airflow for air conditioning in the air conditioning case. The high-temperature and high-pressure refrigerant discharged from the compressor 6 flows through the refrigerant flow path in the indoor radiator 11, and the indoor radiator 11 circulates in the air conditioning case and passes through the indoor radiator 11 itself. The airflow is radiated to heat the airflow for air conditioning.

  The solenoid valve 7 has a specification that can be switched between fully open and fully closed. The heating throttle by the electric expansion valve 17 that constitutes a control throttle constitutes a throttle with a predetermined opening degree, and is a pressure reducing means for reducing the pressure of the refrigerant flowing out of the indoor radiator 11. During the cooling operation, the electric expansion valve 17 is closed, and the refrigerant flowing out from the indoor radiator 11 passes through the open electromagnetic valve 7 and is subjected to a heat exchanger 81 that forms an outdoor heat exchanger without being depressurized. To flow into. During heating operation, the electromagnetic valve 7 is closed, and the electric expansion valve 17 restricts the flow path as a heating throttle so that the refrigerant is decompressed and flows into the liquid-cooled heat exchanger composed of the heat exchanger 81.

  When the refrigerant flows out from the heating throttle by the electric expansion valve 17 during the heating operation, the refrigerant is decompressed to a low temperature and a low pressure, so the heat exchanger 81 serves as an endothermic heat exchanger (heat absorber) that absorbs heat from the air flow. Function. Further, since the refrigerant is not decompressed and remains at high temperature and pressure during the cooling operation, the heat exchanger 81 functions as a liquid cooling radiator that cools the refrigerant.

  A blower 16 for supplying an air flow Y3 is provided on the vehicle rear side of the heat exchanger 81. The blower 16 is configured such that the air flow rate of the air flow Y3 is adjusted by increasing or decreasing the rotation speed of the fan. Note that the blower 16 may be a push-type air flow supply unit that is provided on the vehicle front side of the heat exchanger 81 and supplies the air flow Y3 from the front side to the rear side of the vehicle.

  The three-way valve 13 can be switched between the case where the refrigerant flows through the cooling throttle (pressure reducing valve) 14 side and the case where the refrigerant flows mainly through the accumulator 10 side. The three-way valve 13 forms a cooling / heating switching means together with the electromagnetic valve 7 and the electric expansion valve 17.

  The cooling throttle 14 is a decompression unit, and includes a throttle with a predetermined opening degree so as to decompress the refrigerant. The evaporator 9 is a heat exchanger provided on the downstream side of the cooling throttle 14, and exchanges heat between the refrigerant decompressed by the cooling throttle 14 and the air conditioning airflow flowing through the air conditioning case 21, The air flow for air conditioning is cooled. The evaporator 9 is provided so as to cross the entire flow path in the air conditioning case 21. The evaporator 9 is disposed in the air conditioning case 21 on the upstream side of the air flow for air conditioning with respect to the indoor radiator 11.

  The accumulator 10 is a gas-liquid separation unit, and receives the refrigerant that has flowed out of the heat exchanger 81 through the three-way valve 13 or the refrigerant that has flowed out of the evaporator 9 through the cooling throttle 14. The accumulator 10 is installed on the suction side of the compressor 6, separates the gas-liquid refrigerant, stores the liquid refrigerant at the bottom, and sucks the gas refrigerant into the compressor 6.

  The indoor unit is a unit that adjusts the temperature of the air flow for air conditioning to a set temperature set by the occupant and blows it out into the passenger compartment. The blower 25, the evaporator 9, the indoor radiator 11, and the air are provided in the air conditioning case 21. A mix door 12 and the like are provided.

  The blower 25 is a blowing unit that takes in an air-conditioning air flow from the vehicle interior or the exterior of the vehicle interior into the air-conditioning case 21 by switching the inside / outside air switching door 27 and blows it out from various outlets on the most downstream side into the vehicle interior. The evaporator 9 and the indoor radiator 11 described above are disposed on the downstream side of the air flow for air conditioning of the blower 25. Further, a bypass passage 26 is formed between the indoor radiator 11 and the air conditioning case 21 so that the airflow for air conditioning bypasses the indoor radiator 11 and can be circulated.

  The air mix door 12 is an adjusting unit that adjusts the air flow rate of the air conditioning air passing through the indoor radiator 11 and the bypass passage 26. The air mix door 12 is a rotary door that opens and closes an air conditioning air circulation section of the indoor radiator 11 or the bypass passage 26. In accordance with the opening degree of the air mix door 12, the flow rate ratio between the heated air flow that flows through the indoor radiator 11 and the cooling air flow that is cooled by the evaporator 9 and flows through the bypass passage 26 is adjusted, and the indoor heat dissipation. The air-conditioning air temperature on the downstream side of the vessel 11 is adjusted.

  During the cooling operation, the air-conditioning refrigerant Y1 indicated by the arrow Y1 flows from the compressor 6 to the indoor radiator 11, the electromagnetic valve (open) 7, and an outdoor heat exchanger (functions as a water-cooled condenser during cooling) 81. The three-way valve 13, the cooling throttle 14, the evaporator 9, the accumulator 10, and the compressor 6 are circulated through the air conditioning refrigerant circuit 100 c in this order. The air flow for air conditioning does not flow in the indoor radiator 11 because the air mix door 12 is closed.

  During the heating operation, the air-conditioning refrigerant Y1 includes a compressor 6, an indoor radiator 11, an electric expansion valve (throttle) 17, a heat exchanger (functioning as a heat absorber during heating) 81, a three-way valve 13, and an accumulator. 10 and the compressor 6 are circulated through the air conditioning refrigerant circuit 100c in this order. During the dehumidifying heating, the opening / closing setting of the three-way valve 13 is adjusted so that the air conditioning refrigerant Y1 also flows into the cooling throttle (pressure reducing valve) 14 and the evaporator 9 side.

  The cooling refrigerant circuit 100a has a heat storage bypass passage 15. When frost adheres to the surface of the heat exchanger 81 during the heating operation of the air conditioning refrigerant circuit 100c and the defrosting operation is necessary, the opening / closing setting of the three-way valve 2 is controlled to control the heat source 5, the pump 3, and the heat storage The cooling refrigerant Y2 circulates through the bypass flow path 15 and the heat source 5 in this order, and heat storage to the cooling refrigerant Y2 is performed. The stored refrigerant Y2 for cooling flows into the heat exchanger 81 to which frost has adhered, and the blower 16 is brought into an operating state, whereby defrosting is performed for a short time.

  The heat exchanger 81 is configured as a three-fluid heat exchanger through which three fluids related to the air flow Y3 flowing as indicated by the arrow Y3 by the blower 16, the air-conditioning refrigerant Y1, and the cooling refrigerant Y2 flow. The heat exchanger 81 performs heat exchange among the air conditioning refrigerant Y1, the cooling refrigerant Y2, and the air flow Y3.

  FIG. 2 is a schematic diagram showing the internal structure of the side tank 30 of the heat exchanger 81, which is a three-fluid heat exchanger, during the heating operation of the air conditioning refrigerant circuit 100c. The heat exchanger 81 includes a pair of side tanks 30 that are arranged to face each other at a predetermined interval, and a plurality of tubes that connect the pair of side tanks 30 to each other. These tubes include an air conditioning tube 31 through which the air conditioning refrigerant Y1 flows and a cooling tube 32 through which the cooling refrigerant Y2 flows.

  In FIG. 2 and FIG. 3 described later, one of the pair of side tanks 30 and a part of the vicinity of the end portions of the plurality of air conditioning tubes 31 and the plurality of cooling tubes 32 connected to the side tank 30 are shown. It is shown in the figure. The plurality of air conditioning tubes 31 and the plurality of cooling tubes 32 are arranged in parallel to each other, and have a function of flowing the air conditioning refrigerant Y1 and the cooling refrigerant Y2 from one side of the side tank 30 to the other. Yes.

  2 and 3 show the ends of the air conditioning tube 31 and the cooling tube 32 on the side where the air conditioning refrigerant Y1 and the cooling refrigerant Y2 flow into the air conditioning tube 31 and the cooling tube 32, respectively. . The air conditioning tube 31 has a water supply port 33 that opens to the internal space of the side tank 30. The air conditioning refrigerant Y <b> 1 flows into the air conditioning tube 31 from the inside of the side tank 30 via the water supply port 33. The cooling tube 32 has a water supply port 34 that opens to the internal space of the side tank 30. The cooling refrigerant Y <b> 2 flows into the cooling tube 32 from the inside of the side tank 30 via the water supply port 34.

  The operation of the blower 16 generates an air flow Y3 that flows in the direction perpendicular to the paper surface in FIG. The flow direction of the air flow Y3 is orthogonal to the direction in which the air conditioning tube 31 and the cooling tube 32 extend (vertical direction in FIG. 2). The flow direction of the air flow Y3 is orthogonal to the direction in which the side tank 30 extends (the left-right direction in FIG. 2).

  The plurality of air conditioning tubes 31 are arranged in a line along the direction in which the side tank 30 extends. The plurality of cooling tubes 32 are arranged in a line along the direction in which the side tank 30 extends.

  Referring to FIG. 2, in the left part of the heat exchanger 81 in the figure, the air conditioning tubes 31 and the cooling tubes 32 are alternately arranged with respect to the direction in which the side tank 30 extends. In the left portion of the heat exchanger 81 in FIG. 2, the air conditioning tubes 31 and the cooling tubes 32 are arranged in a staggered manner with respect to the direction in which the side tank 30 extends. On the other hand, in the portion on the right side of the heat exchanger 81 in the figure, only the cooling tube 32 is disposed, and the air conditioning tube 31 is not provided.

  In the direction in which the side tank 30 extends, the air conditioning tubes 31 and the cooling tubes 32 are arranged irregularly. That is, the ratio of the arrangement of the air conditioning tube 31 and the cooling tube 32 is not constant but uneven. In the example shown in FIG. 2, the number of air-conditioning tubes 31 and cooling tubes 32 arranged on the right side in the figure is different from the number of air-conditioning tubes 31 and cooling tubes 32 arranged on the left side in the figure. Yes. As a result, the ratio of the arrangement of the air-conditioning tube 31 and the cooling tube 32 is different between the right side and the left side in the figure, and the arrangement of the air-conditioning tube 31 and the cooling tube 32 is not correct in the direction in which the side tank 30 extends. It is even.

  In the left part of the heat exchanger 81, heat exchange is performed between the air-conditioning refrigerant Y1 flowing in the air-conditioning tube 31, the cooling refrigerant Y2 flowing in the cooling tube 32, and the air flow Y3. It is. In the portion of the heat exchanger 81 on the right side in the figure where the air conditioning tube 31 does not exist, heat exchange between the cooling refrigerant Y2 flowing in the cooling tube 32 and the air flow Y3 is performed.

  As shown in FIG. 2, the heat exchanger 81 also has a tube water supply port closing valve 41 accommodated in the side tank 30. The tube water supply port blocking valve 41 has a rectangular flat plate shape, and is provided so as to cover a part of the water supply ports 33 and 34 of the air conditioning tube 31 and the cooling tube 32. The tube water supply port blocking valve 41 suppresses the inflow of the air conditioning refrigerant Y1 to the air conditioning tube 31 by blocking the water supply port 33. Thereby, the flow volume of the air-conditioning refrigerant | coolant Y1 which flows through the inside of the air-conditioning tube 31 reduces. The tube water supply port blocking valve 41 suppresses the inflow of the cooling refrigerant Y <b> 2 to the cooling tube 32 by blocking the water supply port 34. As a result, the flow rate of the cooling refrigerant Y2 flowing through the cooling tube 32 decreases.

  The heat exchanger 81 further includes a heat expansion / contraction material 42 connected to the tube water supply port closing valve 41. The heat stretchable material 42 shown in FIG. 2 has a cylindrical shape. One end of the cylinder is fixed to the inner wall on the right side of the side tank 30 in the drawing, and the other end of the cylinder is connected to the end surface of the tube water supply port closing valve 41. The heat stretchable material 42 is a member that expands and contracts in response to temperature, such as thermowax. Specifically, the heat stretchable material 42 contracts when the temperature is low, and the heat stretchable material 42 expands when the temperature is high. The tube water supply port blocking valve 41 is provided so as to be capable of reciprocating in the internal space of the side tank 30 along the direction in which the side tank 30 extends in accordance with the deformation of the heat expansion / contraction material 42.

  During the heating operation shown in FIG. 2, the outside air temperature is low, so that the heat stretchable material 42 is in a contracted state. Therefore, the length of the thermal expansion / contraction material 42 along the extending direction of the side tank 30 is relatively small. At this time, the tube water supply port blocking valve 41 is disposed in the portion on the right side in FIG. The tube water supply port closing valve 41 covers the water supply ports 34 of the plurality of cooling tubes 32, while not covering the water supply ports 33 of the air conditioning tubes 31.

  FIG. 3 is a schematic diagram showing the internal structure of the side tank 30 of the heat exchanger 81 that is a three-fluid heat exchanger during the cooling operation of the air conditioning refrigerant circuit 100c. During the cooling operation shown in FIG. 3, the outside air temperature is high, so that the heat stretchable material 42 is in a stretched state. Therefore, the length of the thermal expansion / contraction material 42 along the extending direction of the side tank 30 is relatively large. At this time, the tube water supply port blocking valve 41 is disposed in the left side portion in FIG. The tube water supply port closing valve 41 covers both the water supply ports 33 of the plurality of air conditioning tubes 31 and the water supply ports 34 of the plurality of cooling tubes 32.

  FIG. 4 is a flowchart showing the operation of the heat exchanger 81 which is a three-fluid heat exchanger according to the embodiment. The operation of the heat exchanger 81 will be described with reference to FIG. First, in step (S10), it is determined whether or not the air conditioning refrigerant circuit 100c is in a heating operation. When the air conditioning refrigerant circuit 100c is in the cooling operation, or when the air conditioning refrigerant circuit 100c is stopped, NO is determined in the determination of step (S10). In that case, it progresses to step (S20), the tube water supply port blocking valve 41 is moved to the left, and the tube water supply port blocking valve 41 has the water supply ports 33 of the plurality of air conditioning tubes 31 and the water supply ports 34 of the plurality of cooling tubes 32. The state shown in FIG. 3 is covered.

  When the air conditioning refrigerant circuit 100c is in a cooling operation, the heat exchanger 81 functions as a condenser as described above. In this case, a high-temperature refrigerant flows into the heat exchanger 81, and the air-conditioning refrigerant Y1 is radiating heat to the heat exchanger 81. Therefore, in order to cool the heat source 5, it is desirable to reduce the amount of heat exchange between the air conditioning refrigerant Y1 and the cooling refrigerant Y2 and increase the amount of heat exchange between the cooling refrigerant Y2 and the air flow Y3. Therefore, the tube feed port blocking valve 41 is moved to the left as shown in FIG. 3 to suppress heat transfer from the high-temperature air-conditioning refrigerant Y1 to the cooling refrigerant Y2, and from the cooling refrigerant Y2 to the air flow Y3. Promotes heat dissipation. Thereby, since the cooling refrigerant Y2 can be reliably cooled in the heat exchanger 81, the cooling performance of the heat source 5 during the cooling operation of the air conditioning refrigerant circuit 100c can be ensured.

  When the air conditioning refrigerant circuit 100c is stopped, the cooling refrigerant is increased by increasing the flow rate of the cooling refrigerant Y2 to the cooling tube 32 on the right side in FIGS. Heat dissipation from Y2 to the airflow Y3 can be promoted. Thereby, the cooling performance of the heat source 5 can be ensured.

  In the determination of step (S10) shown in FIG. 4, if the air conditioning refrigerant circuit 100c is in the heating operation, it is determined YES. In this case, the process proceeds to step (S30), the tube water supply port closing valve 41 is moved to the right, and the tube water supply port closing valve 41 covers the water supply ports 34 of the plurality of cooling tubes 32. 33 is not covered and is in the state shown in FIG.

  When the air conditioning refrigerant circuit 100c is in a heating operation, the heat exchanger 81 functions as a heat absorber as described above. In this case, the low-temperature refrigerant flows into the heat exchanger 81, and the air-conditioning refrigerant Y1 absorbs heat from the heat exchanger 81. Therefore, in order to cool the heat source 5, it is desirable to increase the amount of heat exchange between the cooler refrigerant Y1 and the cooling refrigerant Y2. Therefore, the arrangement shown in FIG. 2 in which the tube water supply port closing valve 41 is moved to the right is used to promote heat dissipation from the cooling refrigerant Y2 to the low-temperature air-conditioning refrigerant Y1. Thereby, since the cooling efficiency of the cooling refrigerant Y2 in the heat exchanger 81 can be improved, the cooling performance of the heat source 5 during the heating operation of the air conditioning refrigerant circuit 100c can be ensured.

  As described above, in the heat exchange system 100 according to the present embodiment, the tube water supply port blocking valve 41 moving in the side tank 30 adjusts the heat exchange amount between the air conditioning refrigerant Y1 and the cooling refrigerant Y2. It has a function as an exchange amount adjusting means.

  When the air conditioning refrigerant circuit 100c functions as cooling, since the air conditioning refrigerant Y1 flowing into the heat exchanger 81 is at a high temperature, the amount of heat exchange between the air conditioning refrigerant Y1 and the cooling refrigerant Y2 is reduced, and the cooling refrigerant. The amount of heat exchange between Y2 and the airflow Y3 is increased. Thereby, at the time of air_conditioning | cooling with the large heat radiation from the air-conditioning refrigerant | coolant Y1, the temperature rise of the cooling refrigerant | coolant Y2 which flows through the heat exchanger 81 can be suppressed, and the cooling refrigerant | coolant Y2 can be cooled reliably.

  On the other hand, when the air conditioning refrigerant circuit 100c functions as heating, since the air conditioning refrigerant Y1 flowing into the heat exchanger 81 is at a low temperature, the amount of heat exchange between the air conditioning refrigerant Y1 and the cooling refrigerant Y2 is increased. Thereby, the cooling refrigerant Y2 flowing through the heat exchanger 81 can be reliably cooled by heat transfer from the cooling refrigerant Y2 to the air conditioning refrigerant Y1. At this time, since the air-conditioning refrigerant Y1 receives heat from the cooling refrigerant Y2 in the heat exchanger 81 and can secure a sufficient amount of heat absorption, heating efficiency can be improved by collecting the exhaust heat.

  Therefore, the heat source 5 can be efficiently and stably cooled both during cooling and heating of the air conditioning refrigerant circuit 100c.

  In addition, in embodiment mentioned above, although the example which moves the tube water supply port blocking valve 41 by expansion-contraction accompanying the temperature change of the heat expansion / contraction material 42 was demonstrated, it is not restricted to this example. For example, a drive mechanism for electrically or mechanically moving the tube water supply port closing valve 41 may be provided, and the tube water supply port closing valve 41 may be controlled to move according to the operating state of the air conditioning refrigerant circuit 100c.

  The tube water supply port closing valve 41 may move according to the detected value of the temperature of the heat source 5. For example, when the temperature of the heat source 5 becomes too high during the cooling operation, the tube water supply port closing valve 41 may be moved to the left side. In this case, the amount of heat transfer from the air conditioning refrigerant Y1 to the cooling refrigerant Y2 decreases, and the amount of heat exchange between the cooling refrigerant Y2 and the air flow Y3 increases, so the temperature of the heat source 5 can be lowered. After the temperature of the heat source 5 is sufficiently lowered, the tube water supply port closing valve 41 may be returned to the right side. Further, when the heat source 5 is a battery or the like and the temperature of the heat source 5 is to be raised during initial operation or the like, the tube water supply port blocking valve 41 is moved to the right side to transfer heat from the air conditioning refrigerant Y1 to the cooling refrigerant Y2. You may let them.

  The tube water supply port closing valve 41 may move according to the detected value of the temperature of the air conditioning refrigerant Y1. For example, when the temperature of the air-conditioning refrigerant Y1 decreases during the heating operation, the tube water supply port blocking valve 41 may be moved to the right side. In this case, since the amount of heat transfer from the cooling refrigerant Y2 to the air conditioning refrigerant Y1 increases, the temperature of the air conditioning refrigerant Y1 can be increased. After the temperature of the air-conditioning refrigerant Y1 has risen sufficiently, the tube water supply port blocking valve 41 may be returned to the left side.

  Although the embodiment of the present invention has been described as above, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  2,13 Three-way valve, 3 pump, 5 heat source, 6 compressor, 7 solenoid valve, 9 evaporator, 10 accumulator, 11 indoor radiator, 12 air mix door, 15 heat storage bypass flow path, 16 blower, 17 electric type Expansion valve, 25 Blower, 26 Bypass passage, 27 Inside / outside air switching door, 30 Side tank, 31 Air conditioning tube, 32 Cooling tube, 33, 34 Water supply port, 41 Tube water supply port blocking valve, 42 Thermal expansion / contraction material, 81 Heat Exchanger, 100 heat exchange system, 100a cooling refrigerant circuit, 100c air conditioning refrigerant circuit, Y1 air conditioning refrigerant, Y2 cooling refrigerant, Y3 air flow.

Claims (1)

An air conditioning refrigerant circuit in which the air conditioning refrigerant circulates;
A cooling refrigerant circuit in which a cooling refrigerant for cooling the heat source circulates;
In the heat exchange system comprising: the air conditioning refrigerant, the cooling refrigerant, and a heat exchanger that exchanges heat between the air,
The heat exchanger has a heat exchange amount adjusting means for adjusting a heat exchange amount between the air conditioning refrigerant and the cooling refrigerant,
The heat exchange amount adjusting means reduces the amount of heat exchange between the air conditioning refrigerant and the cooling refrigerant when the air conditioning refrigerant circuit functions as cooling, and the air conditioning when the air conditioning refrigerant circuit functions as heating. Exchange system which increases the amount of heat exchange between the refrigerant for cooling and the refrigerant for cooling.

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