JP2015037894A - Vehicle air conditioner, heat exchange device, and unit device for vehicle air conditioning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle air conditioner which achieves compactification of an air-conditioning system utilizing a refrigerant circuit and a coolant circuit and reduces heat loss thereby improving the performance.SOLUTION: A vehicle air conditioner includes: an outdoor heat exchanger 10 which conducts heat exchange between a refrigerant of a heat pump and air at the exterior of a vehicle cabin; a water refrigerant heat exchanger 30 which flows the refrigerant and a coolant thereinto to move heat from the refrigerant to the coolant; a heat radiation part 50 which flows the coolant thereinto to radiate the heat from the coolant to air; circulation means 52 which circulates the coolant between the water refrigerant heat exchanger 30 and the heat radiation part 50; and a draft air duct 200 which blows air into the vehicle cabin and in which the heat radiation part 50 is disposed in the middle thereof. The outdoor heat exchanger 10 is integrally joined to the water refrigerant heat exchanger 30.

Description

  The present invention relates to a vehicle air conditioner mounted on a vehicle, a heat exchange device used in the vehicle air conditioner, and a unit device for vehicle air conditioning.

  Conventionally, several technologies have been proposed in which heat is exchanged between the refrigerant of the heat pump and the cooling water, and the cooling water performs a part of the cooling or heating operation of the air conditioner (for example, Patent Documents). 1 or 2).

JP-A-10-329532 JP 05-330331 A

  However, in an air conditioning system including a circuit for flowing refrigerant and a circuit for flowing cooling water, the number of components of the system increases with a plurality of devices for flowing the refrigerant and a plurality of devices for flowing the cooling water. Therefore, in such an air conditioning system, there is a problem that the entire system becomes large and has a complicated configuration.

  Further, in such an air conditioning system, heat loss is caused by the piping connecting the respective components, and this heat loss reduces the air conditioning performance and hinders energy saving.

  An object of the present invention is to provide a vehicle air conditioner capable of achieving a compact air conditioning system using a refrigerant circuit and a cooling water circuit and improving performance by reducing heat loss. Moreover, it is providing the unit apparatus for a heat exchange apparatus and vehicle air conditioning which can be utilized for such a vehicle air conditioner.

  An air conditioner for a vehicle according to an aspect of the present invention includes an outdoor heat exchanger that exchanges heat between a refrigerant of a heat pump and air outside a passenger compartment, and the refrigerant and cooling water that flow inside to cool the refrigerant. Cooling between a water-refrigerant heat exchanger that transfers heat to water, a heat-dissipating part that causes the cooling water to flow inside and releases heat from the cooling water to the air, and the water-refrigerant heat exchanger and the heat-dissipating part A circulation means that circulates water, and an air passage that sends air into the passenger compartment and in which the heat dissipating part is disposed, and the outdoor heat exchanger and the water refrigerant heat exchanger are integrally joined. Adopt the configuration.

  A heat exchange device according to an aspect of the present invention includes a refrigerant air heat exchanger that exchanges heat between refrigerant and air by flowing a refrigerant therein, and a refrigerant and cooling water that flows through the refrigerant and air. A water / refrigerant heat exchanger for exchanging heat with cooling water, and the refrigerant / air heat exchanger and the water / refrigerant heat exchanger are joined together, and the refrigerant of the refrigerant / air heat exchanger is integrated. And a pipe for flowing the refrigerant of the water-refrigerant heat exchanger are connected to each other.

  A unit apparatus for air conditioning of a vehicle according to an aspect of the present invention includes an electric compressor that compresses a refrigerant of a heat pump, and cooling water and a refrigerant compressed by the electric compressor flowing therein to flow from the refrigerant to the cooling water. A water-refrigerant heat exchanger that moves heat and a refrigerant that has passed through the water-refrigerant heat exchanger flowed to exchange heat between the refrigerant and air, and are joined integrally with the water-refrigerant heat exchanger. An outdoor heat exchanger and an accumulator for supplying a gas-phase refrigerant to the electric compressor are unitized.

  According to the present invention, the air conditioning system using the refrigerant circuit and the cooling water circuit can be made compact. In addition, the piping between the refrigerant air heat exchanger (for example, the outdoor heat exchanger) and the water refrigerant heat exchanger is shortened, and heat loss during this period can be reduced, thereby improving air conditioning performance and energy saving. be able to.

The figure which shows the unit apparatus for vehicle air conditioning of Embodiment 1 of this invention Schematic diagram showing a refrigerant and cooling water circuit of the vehicle air conditioner of the first embodiment. The figure which shows the air-path structure of the vehicle air conditioner of Embodiment 1. FIG. Schematic diagram for explaining the state of the cooling operation of the vehicle air conditioner according to the first embodiment. It is a figure explaining the effect | action of a solenoid valve with an orifice, (A) is a figure which shows an open state, (B) is a figure which shows a closed state The figure which shows the integrated heat exchange apparatus of Embodiment 1. FIG. It is a figure which shows the part of the water cooling condenser of an integrated heat exchange apparatus, (A) is the perspective view, (B) is an exploded perspective view. The schematic diagram which shows the circuit of the refrigerant | coolant and cooling water of the vehicle air conditioner of Embodiment 2. FIG. It is a figure which shows the heat absorber of Embodiment 2, (A) is a perspective view of the state attached to the compressor, (B) is a perspective view of a heat absorber itself.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram illustrating a vehicle air conditioning unit device according to a first embodiment of the present invention. FIG. 2 is a schematic diagram showing a refrigerant and cooling water circuit of the vehicle air conditioner according to the first embodiment. FIG. 3 is a diagram illustrating a wind path configuration of the vehicle air conditioner according to the first embodiment. 2 and 3 show the state during heating operation.

  The vehicle air conditioner according to Embodiment 1 of the present invention includes an outdoor heat exchanger 10, a heat exchange fan 19, a solenoid valve with an orifice (corresponding to a switching valve) 20, a water-cooled condenser (a water refrigerant heat exchanger). 30), a compressor (compressor) 41, an accumulator 42, an on-off valve 43, three-way valves 44, 45, an expansion valve 46, a fan 47, a pipe 49 through which a heat pump refrigerant flows, an evaporator 48, , A heater core (corresponding to a heat radiating portion) 50, a cooling / heating switching door 51, a blower path 200, a cooling water pump 52, and a pipe 53 through which cooling water (for example, LLC: Long Life Coolant) flows.

  As will be described in detail later, among these configurations, the outdoor heat exchanger 10, the solenoid valve 20 with an orifice, and the water-cooled condenser 30 are joined together to constitute an integrated heat exchange device 100. Further, the integrated heat exchange device 100, the compressor 41, the accumulator 42, the on-off valve 43, and the piping 49 between them are packaged in one to form a unit device.

  The outdoor heat exchanger 10 causes the refrigerant to flow inside, and receives heat from the heat exchange fan 19 outside the passenger compartment to exchange heat between the air and the refrigerant. The outdoor heat exchanger 10 functions as an evaporator during heating operation, and a low-pressure and low-temperature refrigerant is flowed to give air heat to the refrigerant. On the other hand, the outdoor heat exchanger 10 functions as a condenser during the cooling operation, and a high-pressure and high-temperature refrigerant is flowed to release the heat of the refrigerant to the air.

  The water-cooled condenser 30 causes the refrigerant and the cooling water to flow inside and exchanges heat between them. Inside the water-cooled condenser 30, the refrigerant and the cooling water flow through the partitions with high heat conduction (a plurality of plates 31 (see FIG. 7B)) to exchange heat. Details of the water-cooled condenser 30 will be described later.

  The compressor 41 compresses the refrigerant to a high temperature and a high pressure by electric drive, and sends the compressed refrigerant to the water-cooled condenser 30. The compressor 41 has a property of generating heat by Joule heat and frictional heat of the drive unit.

  The accumulator 42 separates the refrigerant that is a mixture of the liquid phase and the gas phase, and supplies only the gas phase refrigerant to the compressor 41.

  The on-off valve 43 switches whether the refrigerant sent from the outdoor heat exchanger 10 is sent to the evaporator 48 side or sent to the accumulator 42 without passing through the evaporator 48 by an opening / closing operation. The on-off valve 43 is opened during the heating operation and allows the refrigerant to flow, and is closed during the cooling operation and does not flow the refrigerant.

  The three-way valve 45 sends the refrigerant sent out from the outdoor heat exchanger 10 to the evaporator 48 side or the on-off valve 43 side. When the on-off valve 43 is open, the three-way valve 45 allows most of the refrigerant to flow toward the on-off valve 43 due to the pressure difference, and when the on-off valve 43 is closed, causes the refrigerant to flow toward the evaporator 48.

  The three-way valve 44 sends the refrigerant from the on-off valve 43 side or the refrigerant from the evaporator 48 side to the accumulator 42. It should be noted that the expansion valve 46 does not substantially flow the refrigerant when the pressure for moving the refrigerant is low, so the three-way valves 44 and 45 can be omitted.

  The expansion valve 46 causes the refrigerant to flow during the cooling operation, expands the high-pressure refrigerant to a low temperature and low pressure, and sends it to the evaporator 48.

  As shown in FIG. 3, the air blowing path 200 is a flow path that introduces outside air or a mixed air of outside air and inside air from the introduction port and sends the air into the vehicle interior. In the air passage 200, a fan 47, an evaporator 48, a heater core 50, and a cooling / heating switching door 51 are provided in the middle of the air flow path.

  The fan 47 generates static pressure in the air passage 200 and causes air to flow along the air passage 200.

  The evaporator 48 moves the heat of air to the refrigerant by flowing a low-temperature refrigerant therein and flowing air in the air passage 200 between the plurality of fin-type heat radiating plates. The evaporator 48 has no effect on the air that is not passed through the refrigerant during the heating operation, and cools the air that is passed through the refrigerant during the cooling operation.

  The heater core 50 allows cooling water to flow therein and discharges heat of the cooling water to the air by flowing air in the air passage 200 between a plurality of fin-type heat sinks heated by the cooling water. The heater core 50 superheats the air passing through the heated cooling water during the heating operation. The heater core 50 has no effect on the air because the cooling water is stopped during the cooling operation or the cooling / heating switching door 51 blocks the passage of air.

  As shown in FIG. 3, the cooling / heating switching door 51 is a door that switches whether the air flowing through the air blowing path 200 passes through the heater core 50 or is bypassed.

  The solenoid valve with orifice 20 is a valve that can be switched between an expansion valve action (a function of allowing the refrigerant to pass through under reduced pressure) and an open / close valve.

  FIG. 5 is a diagram for explaining the operation of the solenoid valve 20 with an orifice. FIG. 5A is a diagram showing an open state, and FIG. 5B is a diagram showing a closed state.

  As shown in FIG. 5A, the orifice-equipped solenoid valve 20 opens the valve 21 greatly in the open state and allows the refrigerant to pass therethrough with almost no pressure reduction. On the other hand, as shown in FIG. 5 (B), the orifice-equipped solenoid valve 20 functions as an expansion valve for reducing the pressure after passing through the refrigerant by flowing the refrigerant through the narrow flow path of the orifice 22 in the closed state.

  The solenoid valve with orifice 20 introduces the refrigerant from the water-cooled condenser 30 and sends it out to the outdoor heat exchanger 10. The solenoid valve with orifice 20 is closed during the heating operation and is opened during the cooling operation.

[Heating operation]
FIG. 2 shows a heating operation state of the vehicle air conditioner according to the first embodiment.

  During the heating operation, the orifice-equipped electromagnetic valve 20 is closed, the on-off valve 43 is opened, and the cooling water pump 52 is activated. Further, in the air blowing path 200, the cooling / heating switching door 51 opens the flow path on the heater core 50 side, and the fan 47 is driven.

  By such an operation, the refrigerant is compressed by the compressor 41, passes through the water-cooled condenser 30, and then expanded by the orifice-equipped electromagnetic valve 20 to be low temperature and low pressure. The low-temperature refrigerant passes through the outdoor heat exchanger 10 and absorbs heat from the air. Thereafter, the refrigerant passes through the on-off valve 43 and is sent to the compressor 41 via the accumulator 42 without flowing to the evaporator 48 side.

  When the refrigerant passes through the water-cooled condenser 30, the cooling water is heated by the high-temperature and high-pressure refrigerant, and the heated cooling water is sent to the heater core 50 by the action of the cooling water pump 52.

  In the air passage 200, the air flowing by the fan 47 passes through the evaporator 48 and the heater core 50 and is sent to the vehicle interior. Cold refrigerant does not flow through the evaporator 48, and hot cooling water flows through the heater core 50, so that the air flowing through the air blowing path 200 is heated and sent to the vehicle interior.

[Cooling operation]
FIG. 4 is a schematic diagram for explaining a cooling operation state of the vehicle air conditioner according to the first embodiment.

  During the cooling operation, the solenoid valve with orifice 20 is opened, the on-off valve 43 is closed, and the cooling water pump 52 is substantially stopped. Further, in the air blowing path 200, the cooling / heating switching door 51 closes the flow path on the heater core 50 side, and the fan 47 is driven.

  By such an operation, the refrigerant is compressed by the compressor 41, passes through the water-cooled condenser 30, and then is sent to the outdoor heat exchanger 10 as it is without being depressurized by the orifice-equipped electromagnetic valve 20. The refrigerant dissipates heat in the outdoor heat exchanger 10 and is sent to the evaporator 48 side. The refrigerant is expanded to a low temperature and a low pressure by the expansion valve 46 and flows through the evaporator 48. The refrigerant that has cooled the air after passing through the evaporator 48 is sent to the compressor 41 via the accumulator 42.

  When the refrigerant passes through the water-cooled condenser 30, the refrigerant passes at a high temperature and a high pressure because no cooling water flows. The heater core 50 does not become hot because the cooling water is not flowing.

  In the air passage 200, the air flowing by the fan 47 is cooled by the evaporator 48 and sent to the passenger compartment.

[Configuration of Integrated Heat Exchanger 100]
FIG. 6 is a partially broken front view showing the integrated heat exchange device. FIG. 7 is a perspective view (A) and an exploded perspective view (B) showing a water-cooled condenser part of the integrated heat exchange device.

  The integrated heat exchange device 100 is configured by integrally joining an outdoor heat exchanger 10, an electromagnetic valve 20 with an orifice, and a water-cooled condenser 30.

  The outdoor heat exchanger 10 includes left and right struts 11 incorporating a mother pipe (header), a plurality of fin-type heat sinks 12 that flow between the left and right struts 11 and contact air in a wide area, and refrigerant. And a receiver tank 13 for temporary storage.

  The solenoid valve with orifice 20 is configured by joining an orifice 22 in a pipe 23 and attaching a valve 21 and an electromagnetic actuator to a lateral hole of the pipe 23.

  As shown in FIG. 7B, the water-cooled condenser 30 includes a refrigerant and cooling water between a panel 32 provided with a plurality of joints 32a to 32c and a panel 33 provided with a refrigerant outlet 33a. A plurality of plates 31 forming the flow path are stacked.

  The joints 32a to 32c of the panel 32 are a joint 32a for introducing cooling water, a joint 32b for sending cooling water, and a joint 32c for introducing refrigerant.

  Every other space between the panels 32 and 33 and the plurality of plates 31 becomes a thin flat flow path for flowing a coolant and a thin flat flow path for flowing cooling water. The plurality of plates 31 are provided with openings 31a and 31b and short pipes for distributing the refrigerant from the inlet to the refrigerant flow path so as not to cross the cooling water flow path and then sending the refrigerant to the outlet. It has been. The plurality of plates 31 have openings 31c, 31d and short pipes for distributing the cooling water from the introduction port to the cooling water flow channel so as not to cross the refrigerant flow channel and then sending the cooling water to the delivery port. The body is provided.

  In a plurality of thin flat flow paths formed between the plurality of plates 31 and the panels 32 and 33, as indicated by solid arrows in FIG. On the other hand, as shown by the dashed arrows in FIG. 7B, the cooling water flows from top to bottom every other flow path. And heat is exchanged between both.

  The water-cooled condenser 30 is joined to the column 11 of the outdoor heat exchanger 10 via the pipe 23 of the solenoid valve 20 with an orifice. The water-cooled condenser 30 is joined in the direction in which the plate 31 and the panels 32 and 33 extend along the longitudinal direction of the support 11. The refrigerant outlet 33a of the water-cooled condenser 30 (see FIG. 7B) is connected to the mother pipe of the column 11 through the short pipe 23 of the solenoid valve 20 with an orifice.

  The plurality of fin-type heat radiating plates 12 of the outdoor heat exchanger 10, the column 11 and the receiver tank 13, the piping 23 and the orifice 22 of the solenoid valve 20 with an orifice, and the plurality of plates 31 and panels 32 and 33 of the water-cooled condenser 30. Are simultaneously put into a furnace and joined together by brazing.

  According to the integrated heat exchange device 100 as described above, the outdoor heat exchanger 10 and the water-cooled condenser 30 can be integrally manufactured by a single brazing process, and the manufacturing cost and the number of manufacturing steps can be reduced. Can do.

  In addition, according to such an integrated heat exchange device 100, compared to a configuration in which an outdoor heat exchanger, an electromagnetic valve with an orifice, and a water-cooled condenser are provided as separate components and connected to each other by piping, Compactness can be achieved, and installation on a vehicle is facilitated. In addition, heat loss in the piping is reduced, and energy efficiency is improved particularly during heating operation.

  Further, according to the unit device of the present embodiment in which the integrated heat exchange device 100, the compressor 41, the accumulator 42, the three-way valve 44, and the piping 49 between them are packaged in one, the following is performed. Effects can be obtained. That is, by adding this unit device without modifying the configuration of the air passage 200 provided in the conventional vehicle, the vehicle air conditioner of the present embodiment that performs cooling and heating by a heat pump can be realized.

(Embodiment 2)
The second embodiment is mainly different from the first embodiment in that it includes a heat absorber (corresponding to a heat absorption part) 60 that takes in heat released from the compressor 41 to the surroundings into cooling water. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 8 is a schematic diagram showing a refrigerant and cooling water circuit of the vehicle air conditioner according to the second embodiment. 9A and 9B are diagrams showing a heat absorber according to the second embodiment, in which FIG. 9A is a perspective view of a state attached to a compressor, and FIG. 9B is a perspective view of a heat absorber alone.

  As shown in FIGS. 9A and 9B, the heat absorber 60 includes a mat-like heat insulating material 62 and a pipe 63 having high thermal conductivity. The pipe 63 is fixed around the compressor 41 in a highly heat conductive state, and the heat insulating material 62 covers the periphery.

  As shown in FIG. 9A, the pipe 63 through which the cooling water flows in the heat absorber 60 and the pipes 41a and 41b through which the refrigerant of the compressor 41 flow are independent. There is no heat exchange.

  In the second embodiment, the integrated heat exchange device 100, the compressor 41, the accumulator 42, the three-way valve 44, the heat absorber 60, and the pipes 49 and 53 between them are packaged in one to form a unit device. doing.

  According to the vehicle air conditioner of the second embodiment, the heat generated by the compressor 41 is absorbed by the cooling water sent from the heater core 50 to the water cooling condenser 30 during the heating operation. This heat is used when the heater core 50 warms the air. Therefore, according to the vehicle air conditioner of Embodiment 2, the thermal efficiency during the heating operation can be further improved.

  The embodiments of the present invention have been described above.

  In the above embodiment, a specific configuration has been described as an example of the refrigerant circuit and the cooling water circuit. However, the invention in which the outdoor heat exchanger (refrigerant air heat exchanger) and the water-cooled condenser (water refrigerant heat exchanger) are integrated is not limited to the refrigerant and cooling water circuit shown in the embodiment, and various It is useful when applied to circuits. Moreover, in the said embodiment, although demonstrated using the specific structure as an example as an outdoor heat exchanger (refrigerant air heat exchanger) and a water-cooled condenser (water refrigerant heat exchanger), these specific structures are various. It can be changed.

  The present invention is useful when applied to a vehicle air conditioner mounted on a vehicle.

DESCRIPTION OF SYMBOLS 10 Outdoor heat exchanger 11 Support | pillar 12 Fin type heat sink 20 Orifice solenoid valve 30 Water cooling condenser 41 Compressor 42 Accumulator 43 On-off valve 44, 45 Three-way valve 46 Expansion valve 47 Fan 48 Evaporator 49, 53, 63 Piping 50 Heater core 51 Cooling and heating Switching door 52 Cooling water pump 60 Heat absorber 62 Heat insulation material 200 Air passage

Unit device for a vehicle air conditioner according to an embodiment of the present invention, cooling and compression device you compress a refrigerant of the heat pump, is flowed and a refrigerant compressed by the cooling water before Ki圧 condenser therein from the refrigerant A water-refrigerant heat exchanger that transfers heat to water, and a refrigerant that has passed through the water-refrigerant heat exchanger is flowed to exchange heat between the refrigerant and air, and is joined to the water-refrigerant heat exchanger integrally. an outdoor heat exchanger that is, an accumulator for supplying gas-phase refrigerant before Ki圧 condenser, but a configuration that is unitized.

An air conditioner for a vehicle according to an aspect of the present invention includes an outdoor heat exchanger that exchanges heat between a refrigerant of a heat pump and air outside a passenger compartment, and the refrigerant and cooling water that flow inside to cool the refrigerant. Cooling between a water-refrigerant heat exchanger that transfers heat to water, a heat-dissipating part that causes the cooling water to flow inside and releases heat from the cooling water to the air, and the water-refrigerant heat exchanger and the heat-dissipating part A circulation means for circulating water, an air passage in which air is sent into the vehicle interior and the heat dissipating part is disposed in the middle, and a switching valve that can be switched to a state in which the refrigerant is expanded or allowed to pass without being expanded. wherein the said switching valve in the flow path of the refrigerant between the outdoor heat exchanger and the water refrigerant heat exchanger is mounted, the outdoor heat exchanger, before Symbol water refrigerant heat exchanger, and the switching valve is integrated The structure which has been joined is taken.

A heat exchange device according to an aspect of the present invention includes a refrigerant air heat exchanger that exchanges heat between refrigerant and air by flowing a refrigerant therein, and a refrigerant and cooling water that flows through the refrigerant and air. A water-refrigerant heat exchanger that exchanges heat with cooling water, and a switching valve that can be switched to a state in which the refrigerant is expanded or allowed to pass without being expanded , the refrigerant air heat exchanger, the switching valve in the flow path of the refrigerant between the water refrigerant heat exchanger is mounted, the coolant air heat exchanger, before Symbol water refrigerant heat exchanger, and the switching valve is integrally joined, structure Take.

A unit device for air conditioning of a vehicle according to an aspect of the present invention includes a compressor that compresses a refrigerant of a heat pump, and cooling water and a refrigerant that is compressed by the compressor are flowed therein to generate heat from the refrigerant to the cooling water. the water refrigerant heat exchanger which moved, the chamber outside heat exchanger to be replaced heat between the water refrigerant heat exchanger refrigerant passing through the streamed with refrigerant and air, and the outdoor heat exchanger water A switching valve attached to a refrigerant flow path between the refrigerant heat exchanger and capable of switching between a state in which the refrigerant is expanded or a state in which the refrigerant is allowed to pass without expansion , and a gas phase refrigerant to the compressor The accumulator is unitized, and the outdoor heat exchanger, the water refrigerant heat exchanger, and the switching valve are integrally joined .

Claims (7)

An outdoor heat exchanger that exchanges heat between the refrigerant of the heat pump and the air outside the passenger compartment,
A water-refrigerant heat exchanger that flows heat from the refrigerant to the cooling water by flowing the refrigerant and the cooling water therein;
A heat dissipating part for allowing the cooling water to flow inside and releasing heat from the cooling water to the air;
A circulating means for circulating cooling water between the water-refrigerant heat exchanger and the heat radiating section;
An air passage that sends air into the passenger compartment and the heat dissipating part is disposed in the middle;
With
The outdoor heat exchanger and the water refrigerant heat exchanger are integrally joined;
Vehicle air conditioner. The outdoor heat exchanger and the water refrigerant heat exchanger are integrally brazed,
The vehicle air conditioner according to claim 1. A switching valve that can be switched to a state in which the refrigerant is expanded or allowed to pass without being expanded,
The switching valve is attached to a refrigerant flow path between the outdoor heat exchanger and the water refrigerant heat exchanger.
The vehicle air conditioner according to claim 1. The outdoor heat exchanger has a plurality of fin-type heat radiating plates joined to a pipe through which a refrigerant flows, and a column portion that supports the plurality of fin-type heat radiating plates,
The water refrigerant heat exchanger is integrally joined to the support column.
The vehicle air conditioner according to claim 1. A compressor for compressing the refrigerant of the heat pump;
An endothermic part that causes cooling water to flow inside and absorbs heat generated by the compressor into the cooling water;
Further comprising
The circulating means is
Circulating cooling water between the water-refrigerant heat exchanger, the heat radiating part, and the heat absorbing part;
The vehicle air conditioner according to claim 1. A refrigerant air heat exchanger that exchanges heat between the refrigerant and air through which the refrigerant flows;
A water-refrigerant heat exchanger in which refrigerant and cooling water are flowed inside to exchange heat between the refrigerant and cooling water;
Comprising
The refrigerant air heat exchanger and the water refrigerant heat exchanger are integrally joined, and a pipe for flowing the refrigerant of the refrigerant air heat exchanger and a pipe for flowing the refrigerant of the water refrigerant heat exchanger are connected. Yes,
Heat exchange device. An electric compressor that compresses the refrigerant of the heat pump;
A water-refrigerant heat exchanger in which cooling water and the refrigerant compressed by the electric compressor are flowed to transfer heat from the refrigerant to the cooling water;
An outdoor heat exchanger that is integrally joined to the water refrigerant heat exchanger while the refrigerant that has passed through the water refrigerant heat exchanger flows and exchanges heat between the refrigerant and air;
An accumulator for supplying a gas-phase refrigerant to the electric compressor;
Is unitized,
Unit device for vehicle air conditioning.

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