Vehicle air conditioning system

Abstract

To provide a vehicle air conditioning system configured so that a piping length of piping can be shortened.SOLUTION: A vehicle air conditioning system A comprises an air conditioning unit D having a blower 1 and a heat exchanger 2, which performs cooling and heating in a vehicle interior, and a refrigerant module B and a cooling liquid module C through which fluid heat-exchanged with air is flown to the heat exchanger 2. In the air conditioning unit D, the blower 1 is arranged closer to the vehicle interior than the heat exchanger 2. The heat exchanger 2 is arranged, along a vehicle longitudinal direction, among the refrigerant module B, the cooling liquid module C and the blower 1, where the air conditioning unit D, the refrigerant module B and the cooling liquid module C are overlapped with one another, when viewed in the vehicle longitudinal direction.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to vehicle air conditioning systems. [Background technology]

[0002] 2. Description of the Related Art Vehicle air conditioning systems have been used to cool and heat the interior of a vehicle. Technologies relating to such vehicle air conditioning systems are described in, for example, Patent Documents 1 and 2, the sources of which are shown below.

[0003] Patent Document 1 describes a refrigeration cycle device. This refrigeration cycle device is applied to a vehicle air conditioner. The vehicle air conditioner is configured to be switchable between a cooling mode and a heating mode. In the cooling mode, the blown air is cooled by the interior evaporator, and cold air is supplied to the interior of the vehicle. On the other hand, in the heating mode, heat is exchanged between the refrigerant that has been brought to a high-temperature and high-pressure state by the compressor and the heat-exchanged coolant via the heater core, and the blown air is heated and warm air is supplied to the interior of the vehicle. The fan, the interior evaporator, and the heater core are arranged in this order from the front to the rear of the vehicle.

[0004] Patent Document 2 describes an air conditioner for a vehicle. This air conditioner for a vehicle is configured to be switchable between a cooling mode and a heating mode. In the cooling mode, the blown air is cooled by the evaporator, and cold air is supplied to the interior of the vehicle. On the other hand, in the heating mode, heat is exchanged between the refrigerant, which has been brought to a high temperature and high pressure state by the compressor, and the cooling water, which has been subjected to heat exchange, via the heater core, and the blown air is heated, and warm air is supplied to the interior of the vehicle. The evaporator and the heater core are arranged in parallel with each other in the blowing direction, and the fan is arranged downstream of the evaporator and the heater core in the blowing direction. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2019-60580 A [Patent Document 2] JP 2009-202734 A Summary of the Invention [Problem to be solved by the invention]

[0006] In the refrigeration cycle device described in Patent Document 1, the heat exchanger (indoor evaporator and heater core) is located inside the vehicle, so the piping length for circulating the fluid circulated by the thermal device located in the motor room (engine room) to the heat exchanger becomes long, and the amount of heat dissipated from the piping increases. In the vehicle air conditioning device described in Patent Document 2, the fan is located inside the vehicle, but there is no description of the location of the heat exchanger (evaporator and heater core) and the thermal device located in the motor room.

[0007] Therefore, there is a demand for a vehicle air conditioning system that can shorten the piping length between the thermal device and the heat exchanger for heating and cooling. [Means for solving the problem]

[0008] The characteristic configuration of the vehicle air conditioning system of the present invention is that it comprises an air conditioning unit having a blower and a heat exchanger for heating and cooling the vehicle cabin, and a thermal device for circulating a fluid that exchanges heat with the air through the heat exchanger, wherein the air conditioning unit has the blower positioned closer to the vehicle cabin than the heat exchanger, the heat exchanger is positioned between the thermal device and the blower along the fore-and-aft direction of the vehicle, and the air conditioning unit and the thermal device overlap when viewed from the fore-and-aft direction of the vehicle.

[0009] In this configuration, the blower is disposed closer to the passenger compartment than the heat exchanger, and the heat exchanger is disposed between the thermal device and the blower along the front-rear direction of the vehicle, so that the thermal device is close to the heat exchanger and the blower is close to the passenger compartment. This makes it possible to effectively utilize the space in the motor room compared to disposing the blower at the front of the vehicle, and by placing the heat exchanger and the thermal device close to each other, the piping length can be shortened. Furthermore, since the air conditioning unit and the thermal device overlap when viewed in the front-rear direction, unnecessary routing of the piping can be suppressed and the piping length can be shortened. This makes it possible to reduce the amount of heat dissipated from the piping and improve power efficiency.

[0010] In this manner, the vehicle air conditioning system is capable of shortening the piping length between the thermal device and the heat exchanger for heating and cooling. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a circuit configuration diagram of a vehicle air conditioning system. [Diagram 2] 1 is a diagram showing the layout of a vehicle air conditioning system according to a first embodiment; [Diagram 3] FIG. 4 is a diagram showing the flow of coolant in a first state. [Figure 4] FIG. 11 is a diagram showing the flow of coolant in a second state. [Diagram 5] FIG. 11 is a diagram showing the arrangement of a vehicle air conditioning system according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of a vehicle air conditioning system according to the present invention will be described in detail with reference to the drawings. Note that the embodiments described below are merely examples for explaining the present invention, and the present invention is not limited to these embodiments. Therefore, the present invention can be embodied in various forms without departing from the gist of the present invention.

[0013] First Embodiment A vehicle air conditioning system A according to a first embodiment will be described with reference to Figs. 1 and 2. Fig. 1 is a diagram showing a circuit configuration of the vehicle air conditioning system A. The vehicle air conditioning system A is mounted on a vehicle and includes a refrigerant module B (an example of a thermal device), a coolant module C (an example of a thermal device), and an air conditioning unit D (an example of an "HVAC (Heating, Ventilation, and Air Conditioning) unit"). Fig. 2 shows the arrangement of the refrigerant module B, the coolant module C, and the air conditioning unit D in the vehicle air conditioning system A. Fig. 2(A) is a plan view, and Fig. 2(B) is a side view. In Fig. 2, the front side in the traveling direction of the vehicle when the vehicle air conditioning system A is mounted on the vehicle is indicated as F, and the rear side in the traveling direction is indicated as R.

[0014] The air conditioning unit D has a blower 1 and a heat exchanger 2, and the heat exchanger 2 includes an evaporator 3 and a heater core 4. As shown in Figures 1 and 2, the blower 1 is disposed closer to the passenger compartment than the heat exchanger 2 (rearward in the direction of travel of the vehicle), and the evaporator 3, heater core 4, and blower 1 are disposed in this order from the front of the vehicle toward the rear of the vehicle. Therefore, outside air sucked in by the blower 1 is introduced into the passenger compartment through the evaporator 3 and heater core 4.

[0015] The refrigerant module B is provided with a refrigerant flow path B1 and is configured as a refrigerant manifold. The coolant module C is provided with a coolant flow path C1 and is configured as a coolant manifold. Here, the manifold is a flow path housing in which a plate member is laminated and sealed on a housing main body in which the coolant flow path C1 and the refrigerant flow path B1 are formed. The flow path housing is made of a metal material with high thermal conductivity, including aluminum. The module is a manifold integrated with a pump, valves, etc.

[0016] First, the refrigerant flow path B1 will be described with reference to Fig. 1. A refrigerant such as hydrofluorocarbon (HFC) or hydrofluoroolefin (HFO) flows through the refrigerant flow path B1, and a cooling liquid such as antifreeze or long-life coolant mainly composed of ethylene glycol or the like, or a cooling liquid composed of insulating oil such as paraffin-based oil flows through the coolant flow path C1.

[0017] The refrigerant flow path B1 circulates the refrigerant between the water-cooled condenser 12, the chiller 14, and the evaporator 3. The refrigerant module B is configured to allow the refrigerant to flow between the accumulator 10, the compressor 11, the water-cooled condenser 12, the expansion valve 13, the switching valve 44, and the chiller 14 and / or the evaporator 3 via the refrigerant flow path B1.

[0018] The accumulator 10 stores a liquid refrigerant and separates the stored refrigerant into gas and liquid. The gas refrigerant separated by the accumulator 10 flows through a first refrigerant passage 21 and is sent to the compressor 11.

[0019] The compressor 11 compresses the refrigerant that has flowed in from the accumulator 10. This causes the refrigerant to become a high-temperature compressed gas. The compressor 11 sends the refrigerant that has become a high-temperature compressed gas to the water-cooled condenser 12 via the second refrigerant passage 22. Thus, the compressor 11 pressure-feeds the refrigerant from the accumulator 10 to the water-cooled condenser 12.

[0020] The refrigerant that has passed through the compressor 11 flows through the water-cooled condenser 12. The water-cooled condenser 12 is configured so that the cooling liquid flows in through a first cooling liquid flow path 31 and flows out through a second cooling liquid flow path 32. The first cooling liquid flow path 31 and the second cooling liquid flow path 32 are configured separately from the second cooling liquid path 22. The cooling liquid that flows in through the second cooling liquid path 22 is condensed and liquefied as heat is absorbed by the cooling liquid. The liquefied cooling liquid is sent to the third cooling liquid path 23. Like the second cooling liquid path 22, the third cooling liquid path 23 is also configured separately from the first cooling liquid flow path 31 and the second cooling liquid flow path 32.

[0021] In the expansion valve 13, the refrigerant (liquefied refrigerant) flowing through the third refrigerant passage is expanded and turned into a low-temperature, low-pressure mist. The mist-like refrigerant is sent to the fourth refrigerant passage .

[0022] The refrigerant flows through the chiller 14 via the switching valve 44 provided in the fourth refrigerant passage 24. The refrigerant expanded by the expansion valve 13 and turned into a low-temperature, low-pressure mist flows through the fourth refrigerant passage 24 as described above, and this mist is sent to the chiller 14. The chiller 14 is configured such that the coolant that has undergone heat exchange in the battery 16 flows in through the third coolant passage 33, and the coolant flows out through the fourth coolant passage 34. The third coolant passage 33 and the fourth coolant passage 34 are configured separately from the fourth refrigerant passage 24. In the chiller 14, the mist refrigerant absorbs heat from the coolant and evaporates. The evaporated refrigerant flows through the fifth refrigerant passage 25 to the accumulator 10.

[0023] The refrigerant that flows from the switching valve 44 into the sixth refrigerant passage 26 flows into the evaporator 3. The low-temperature, low-pressure mist refrigerant that flows into the evaporator 3 absorbs heat from the air introduced from the outside by the blower 1 and evaporates. Conversely, the air is cooled by the refrigerant absorbing heat, and is sent into the vehicle interior as cool air. The evaporated refrigerant flows into the fifth refrigerant passage 25 through the check valve 15 arranged in the seventh refrigerant passage 27 and flows into the accumulator 10.

[0024] Next, the coolant flow path C1 will be described with reference to Fig. 1. A coolant that exchanges heat with the refrigerant in the water-cooled condenser 12 and the chiller 14 flows through the coolant flow path C1. The coolant module C is configured so that the coolant can flow through the coolant flow path C1 between the water-cooled condenser 12, the chiller 14, the switching valve 42, the radiator 43, the heater core 4, and the battery 16 by the first pump P1 and the second pump P2.

[0025] As described above, the water-cooled condenser 12 is configured so that the coolant flows in through the first coolant flow path 31 to remove heat from the refrigerant, and the coolant flows out through the second coolant flow path 32. The first coolant flow path 31 is provided with a first pump P1, and the coolant is pumped out by this first pump P1.

[0026] In the heating mode, the switching valve 42 is configured to allow the coolant to flow from the water-cooled condenser 12 to the heater core 4 and / or the radiator 43. The coolant is sent from the water-cooled condenser 12 to the switching valve 42 via the second coolant flow path 32. The switching valve 42 is configured to allow the coolant to be sent to the fifth coolant flow path 35 and the sixth coolant flow path 36.

[0027] The coolant sent from the switching valve 42 to the fifth coolant flow path 35 flows through the heater core 4. The coolant sent to the heater core 4 can be sent to the water-cooled condenser 12 via the first coolant flow path 31.

[0028] The coolant sent from the switching valve 42 to the sixth coolant flow path 36 flows through the radiator 43. In the radiator 43, heat exchange takes place between the coolant and the outside air, and the coolant is cooled. The coolant after the heat exchange is sent to the first coolant flow path 31 via the seventh coolant flow path 37.

[0029] Further, a second pump P2 is provided in the fourth coolant flow path, and the coolant is circulated through the battery 16, the third coolant flow path 33, the chiller 14, and the fourth coolant flow path by the second pump P2.

[0030] The switching valve 42 is configured to be able to switch the flow state of the coolant in the coolant flow passage C1 between a first state and a second state. The first state is a state in which the coolant is circulated through the water-cooled condenser 12. The flow state of the coolant in the first state is indicated by a thick solid line in Fig. 3. As shown in Fig. 3, in the first state, the coolant is circulated by the first pump P1 through the water-cooled condenser 12, the second coolant flow passage 32, the switching valve 42, the fifth coolant flow passage 35, the heater core 4, and the first coolant flow passage 31.

[0031] The second state is a state in which the coolant is sent from the switching valve 42 to the sixth coolant flow path 36, and circulates through the radiator 43 and the seventh coolant flow path 37, returning to the first coolant flow path 31. This makes it possible to adjust the temperature of the coolant flowing through the heater core 4.

[0032] The flow state of the refrigerant in the refrigerant flow path B1 in the heating mode is indicated by a thick dashed line in Fig. 3. As shown in Fig. 3, in the heating mode, the refrigerant is circulated through the chiller 14, the fifth refrigerant path 25, the accumulator 10, the first refrigerant path 21, the compressor 11, the second refrigerant path 22, the water-cooled condenser 12, the third refrigerant path 23, the expansion valve 13, the fourth refrigerant path 24, and the switching valve 44. At this time, the battery 16 can be cooled by operating the second pump P2. When it is not necessary to cool the battery 16, the coolant is circulated to the water-cooled condenser 12 by a switching valve (not shown).

[0033] The cooling mode is a state in which the refrigerant is circulated through the evaporator 3.

[0034] The flow state of the refrigerant in the refrigerant flow path B1 in the cooling mode is indicated by a thick dashed line in Fig. 4. As shown in Fig. 4, in the second state, the refrigerant is circulated along the evaporator 3, the seventh refrigerant path 27, the accumulator 10, the first refrigerant path 21, the compressor 11, the second refrigerant path 22, the water-cooled condenser 12, the third refrigerant path 23, the expansion valve 13, the fourth refrigerant path 24, the switching valve 44, and the sixth refrigerant path 26.

[0035] The first pump P1, the second pump P2 and the switching valves 42, 44 are controlled by a control unit (not shown) of the vehicle air conditioning system A or a host system of the vehicle air conditioning system A.

[0036] Returning to Fig. 1, the air conditioning unit D includes a blower 1, an evaporator 3, and a heater core 4. The blower 1 draws in outside air and sends the outside air, whose temperature has been adjusted by the evaporator 3 and the heater core 4, to the vehicle interior.

[0037] The evaporator 3 exchanges heat between the air and the refrigerant for cooling and heating the vehicle interior. The air is the outside air drawn in by the blower 1. The refrigerant is introduced into the evaporator 3 through the sixth refrigerant passage 26 as described above, and the refrigerant flows through one or both of the fifth refrigerant passage 25 and the sixth refrigerant passage 26 depending on the state of the switching valve 44 (details will be described later). In the evaporator 3, heat exchange occurs between the outside air and the refrigerant supplied through the sixth refrigerant passage 26, and the cold air after the heat exchange is introduced into the vehicle interior. In addition, the coolant is introduced into the heater core 4 through the fifth coolant passage 35 as described above, and the coolant is sent to one or both of the fifth coolant passage 35 and the sixth coolant passage 36 depending on the state of the switching valve 42. Therefore, in the heater core 4, heat exchange occurs between the outside air drawn in by the blower 1 and the coolant supplied through the fifth coolant passage 35, and the warm air after the heat exchange is introduced into the vehicle interior. Specifically, when the outside air is cooled in the evaporator 3, cold air is introduced into the vehicle cabin, and when the outside air is heated in the heater core 4, hot air is introduced into the vehicle cabin. This makes it possible to cool or heat the vehicle cabin.

[0038] In this embodiment, the switching valve 42 is configured to be able to change the opening degree so as to simultaneously realize the first state and the second state. Therefore, in the switching valve 42, the relatively high-temperature coolant from the water-cooled condenser 12 and the relatively low-temperature coolant from the radiator 43 can be mixed and sent to the fifth coolant flow path 35.

[0039] In addition, the switching valve 44 is configured to allow the refrigerant flowing through the fourth refrigerant passage 24 to flow to the evaporator 3 and / or the chiller 14. When heating the vehicle interior, the switching valve 44 circulates the refrigerant to the chiller 14 and operates the second pump P2 to cool the battery 16 (see FIG. 3). When performing dehumidification heating, the switching valve 44 adjusts the opening so that the refrigerant flows through both the fifth refrigerant passage 25 and the sixth refrigerant passage 26. The refrigerant that flows through the sixth refrigerant passage 26 and enters the evaporator 3 cools and dehumidifies the outside air introduced by the blower 1. The cooled air is sent to the heater core 4, where it is heated, and sent to the vehicle interior as hot air. When cooling the vehicle interior, the switching valve 44 circulates the refrigerant to the evaporator 3 (see FIG. 4). At this time, the water-cooled condenser 12 is not used, and an exterior condenser (not shown) capable of exchanging heat between the refrigerant and the outside air is provided between the compressor 11 and the water-cooled condenser 12. When it is necessary to cool the battery 16 while cooling the vehicle interior, the opening of the switching valve 44 is adjusted so that the refrigerant flows through both the evaporator 3 and the chiller 14, and the second pump P2 is operated.

[0040] In this embodiment, as shown in FIG. 2, the refrigerant module B and the coolant module C are integrated with the air conditioning unit D. Here, "integration" means that the refrigerant module B and the coolant module C are fixed to the air conditioning unit D with bolts or the like. This "integration" also includes forming the same case by combining the materials of the air conditioning unit D, the refrigerant module B, and the coolant module C. Specifically, as shown in FIG. 2A, when the air conditioning unit D is mounted on the vehicle, the refrigerant module B is provided on the front side of the air conditioning unit D in the traveling direction of the vehicle. When viewed in the front-rear direction of the vehicle, the air conditioning unit D and the refrigerant module B overlap. The coolant module C is provided on the left side of the vehicle in the air conditioning unit D. By integrating the refrigerant module B and the coolant module C with the air conditioning unit D in this way, the routing of the flow paths through which the refrigerant or coolant flows between the refrigerant module B and the coolant module C and the air conditioning unit D can be easily and shortly, so that the vehicle air conditioning system A can be made compact.

[0041] Furthermore, in the air conditioning unit D of this embodiment, the evaporator 3, the heater core 4, and the blower 1 are arranged in this order from the front to the rear of the vehicle, and the evaporator 3 and the heater core 4 are arranged between the refrigerant module B and the blower 1 along the front-rear direction of the vehicle. With this arrangement, the refrigerant module B is close to the evaporator 3, and the coolant module C is close to the heater core 4, so that the piping length of the piping connecting the refrigerant module B and the evaporator 3 and the piping connecting the coolant module C and the heater core 4 can be shortened and unnecessary routing of the piping can be suppressed, thereby reducing the amount of heat dissipation from the piping. Also, the space in the motor room can be used more effectively than when the blower 1 is arranged in the front of the vehicle.

[0042] Second Embodiment In the first embodiment, an example has been described in which the refrigerant module B is provided in front of the air conditioning unit D in the traveling direction of the vehicle, and overlaps with the air conditioning unit D when viewed in the front-rear direction of the vehicle. Alternatively, as shown in Fig. 5, the refrigerant module B, the coolant module C, and the air conditioning unit D may be arranged in this order from the front of the vehicle to the rear of the vehicle, and the air conditioning unit D may overlap with the refrigerant module B and the coolant module C when viewed in the front-rear direction of the vehicle. Since the other configurations are the same as those in the first embodiment, detailed description of the same configurations as those in the first embodiment will be omitted.

[0043] In the second embodiment, the refrigerant module B and the coolant module C are disposed on the vehicle front side of the air conditioning unit D. In the air conditioning unit D, the evaporator 3, the heater core 4, and the blower 1 are disposed in this order from the front of the vehicle toward the rear of the vehicle, so that the refrigerant module B is adjacent to the evaporator 3, and the coolant module C is adjacent to the heater core 4. Therefore, compared to the case where the blower 1 is disposed at the front of the vehicle, it is possible to reduce unnecessary routing of the piping and shorten the piping length. This makes it possible to reduce the amount of heat dissipated from the piping and improve power efficiency. It also makes it possible to effectively utilize the space in the motor room.

[0044] Other embodiments (1) In the above embodiment, the air conditioning unit D has a heat exchanger 2 including an evaporator 3 and a heater core 4. However, instead of the heater core 4, a cabin condenser that circulates high-temperature refrigerant from the compressor 11 may be provided, or the evaporator 3 and the heater core 4 may be combined into a single heat exchanger, and a moisture absorption rotor and a heater may be provided separately.

[0045] (2) In the above embodiment, when the air conditioning unit D is mounted on a vehicle, the refrigerant module B is provided at the front of the air conditioning unit D in the traveling direction of the vehicle, and the coolant module C is disposed on the left side of the air conditioning unit D. However, the refrigerant module B may be provided on the left or right side of the air conditioning unit D, or the coolant module C may be provided at the front of the air conditioning unit D in the traveling direction of the vehicle.

[0046] (3) In the above embodiment, a flap may be provided between the evaporator 3 and the heater core 4. By providing the flap, the air cooled in the evaporator 3 bypasses the heater core 4 and is introduced into the vehicle interior by the blower 1, so there is no heat loss of the cooled air.

[0047] In the above-described embodiment, the following configurations are envisaged. (1) A vehicle air conditioning system A comprising an air conditioning unit D having a blower 1 and a heat exchanger 2 for heating and cooling the interior of a vehicle cabin, and a thermal device for circulating a fluid that exchanges heat with the air through the heat exchanger 2, wherein the air conditioning unit D is arranged such that the blower 1 is positioned closer to the passenger compartment than the heat exchanger 2, and the heat exchanger 2 is positioned between the thermal device (refrigerant module B) and the blower 1 along the fore-and-aft direction of the vehicle, and the air conditioning unit D and the thermal device (refrigerant module B) overlap when viewed from the fore-and-aft direction of the vehicle.

[0048] In this configuration, the blower 1 is disposed closer to the passenger compartment than the heat exchanger 2, and the heat exchanger 2 is disposed between the thermal device (refrigerant module B) and the blower 1 along the front-rear direction of the vehicle, so that the thermal device (refrigerant module B) is close to the evaporator 3, and the blower 1 is close to the passenger compartment. Therefore, compared to the case where the blower 1 is disposed at the front of the vehicle, it is possible to effectively utilize the space in the motor room, and by placing the evaporator 3 and the thermal device (refrigerant module B) close to each other, the piping length can be shortened. Furthermore, since the air conditioning unit D and the thermal device (refrigerant module B) overlap when viewed in the front-rear direction, it is possible to suppress unnecessary routing of the piping and shorten the piping length. This makes it possible to reduce the amount of heat dissipated from the piping and improve the power consumption.

[0049] (2) In the vehicle air conditioning system A described in (1), the thermal device arranged in front of the heat exchanger 2 is at least one of a refrigerant module B that circulates refrigerant to the heat exchanger 2 (evaporator 3) and a coolant module C that circulates coolant to the heat exchanger 2 (heater core 4).

[0050] As in this configuration, by arranging the refrigerant module B or the coolant module C so that it overlaps with the air conditioning unit D when viewed from the front-to-rear direction, it is possible to shorten the piping length while effectively utilizing the space in the motor room.

[0051] In the vehicle air conditioning system A described in (3)(2), the heat exchanger 2 has an evaporator 3 for cooling the passenger compartment through which a refrigerant circulates, and a heater core 4 for heating the passenger compartment through which a cooling liquid circulates, and the evaporator 3, heater core 4, and blower 1 are arranged in that order from the front to the rear of the vehicle.

[0052] As in this configuration, by arranging the evaporator 3 upstream of the heater core 4 in the air blowing direction, the evaporator 3 and the heater core 4 can be communicated with each other to realize dehumidifying heating.

[0053] (4) In the vehicle air conditioning system A described in (2) or (3), the air conditioning unit D, the refrigerant module B, and the coolant module C are integrated together.

[0054] By integrating the air conditioning unit D, the refrigerant module B, and the coolant module C as in this configuration, a compact vehicle air conditioning system A can be realized while extremely shortening the piping length. [Industrial Applicability]

[0055] The present invention can be used in a vehicle air conditioning system that allows the piping length to be shortened. [Explanation of symbols]

[0056] 1: Blower, 2: Heat exchanger, 3: Evaporator, 4: Heater core, A: Vehicle air conditioning system, B: Refrigerant module, C: Coolant module, D: Air conditioning unit

Claims

1. an air conditioning unit having a blower and a heat exchanger for heating and cooling the interior of a vehicle; A thermal device that circulates a fluid that exchanges heat with air through the heat exchanger, The air conditioning unit is configured such that the blower is disposed closer to the vehicle compartment than the heat exchanger, the heat exchanger is disposed between the thermal device and the blower along a front-rear direction of the vehicle, A vehicle air conditioning system in which the air conditioning unit and the thermal device overlap when viewed in the front-rear direction of the vehicle.

2. 2. The vehicle air conditioning system according to claim 1, wherein the thermal device arranged in front of the heat exchanger is at least one of a refrigerant module that circulates a refrigerant through the heat exchanger and a coolant module that circulates a coolant through the heat exchanger.

3. the heat exchanger includes an evaporator for cooling the vehicle compartment through which the refrigerant circulates, and a heater core for heating the vehicle compartment through which the cooling liquid circulates, 3. The vehicle air conditioning system according to claim 2, wherein the evaporator, the heater core, and the blower are arranged in this order from the front to the rear of the vehicle.

4. 4. The vehicle air conditioning system according to claim 2, wherein the air conditioning unit, the refrigerant module and the coolant module are integrated together.

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