Vehicle air conditioning system

Abstract

To provide a vehicle air conditioning system which is small-sized and capable of various kinds of humidification.SOLUTION: A vehicle air conditioning system A includes: a blower 51 for sucking outdoor air; a heat exchanger 52 which exchanges heat between outdoor air and a fluid, and is capable of cooling or heating outdoor air; an adsorption part 53 which adsorbs moisture contained in moisture-containing air and generates warm dry air; and a heating part 54 which evaporates the moisture adsorbed by the adsorption part 53 to generate cool humidifying air. The heat exchanger 52 exchanges heat between warm dry air or cool humidifying air and the fluid in order to generate cabin cooling air or cabin heating air.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] Conventionally, a temperature control system that performs cooling and dehumidification operation or heating and humidification operation in a room with high efficiency is known (for example, Patent Document 1). Patent Document 1 discloses a temperature control system (a desiccant air conditioning system in Patent Document 1) that includes a first passage for exhausting indoor air to the outside, a second passage for supplying outdoor air into the room, a condenser and a heating means disposed in the first passage, an evaporator disposed in the second passage, a dehumidification rotor disposed across the first passage and the second passage, a compressor disposed outside the first passage and the second passage, and an expansion valve disposed between the condenser and the evaporator. In the temperature control system, the outdoor air becomes dry air by adsorbing moisture contained in the outdoor air flowing through the second passage to the dehumidification rotor and removing it, and the dry air is cooled by the evaporator and supplied to the room. In addition, the air discharged from the room is heated by the condenser and the heating means in the first passage to become exhaust air, and the exhaust air removes moisture adsorbed by the dehumidification rotor to regenerate (desorb, dry) the dehumidification rotor. The dehumidification rotor, condenser, evaporator, compressor, and expansion valve constitute a compression type air conditioner. The heating means is waste heat from the cooling water of the solid polymer fuel cell. The dehumidification rotor is filled with adsorbents such as silica gel and activated carbon, and rotates at a low speed to alternately face the first and second passages. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-279069 A Summary of the Invention [Problem to be solved by the invention]

[0004] When the desiccant air conditioning system disclosed in Patent Document 1 is installed in a vehicle, the condenser must be placed in the front of the vehicle, which may increase the size and pressure loss. In addition, the desiccant air conditioning system disclosed in Patent Document 1 cannot perform a heating and dehumidification operation in which the outside air is humidified and then heated, so when installed in a vehicle, for example, it cannot supply dehumidified heated air when the defroster function is used in winter, etc.

[0005] Therefore, there is a demand for a vehicle air conditioning system that is compact and capable of performing a variety of humidity control functions. [Means for solving the problem]

[0006] One embodiment of the vehicle air conditioning system of the present invention includes a blower that draws in outside air, a heat exchanger that exchanges heat between the outside air and a fluid and is capable of cooling or heating the outside air, an adsorption section that adsorbs moisture contained in moisture-containing air to generate heated dry air, and a heating section that evaporates the moisture adsorbed in the adsorption section to generate cooled humidified air, and the heat exchanger exchanges heat between the heated dry air or the cooled humidified air and the fluid to generate air for cooling the passenger compartment or air for heating the passenger compartment.

[0007] According to this embodiment, the adsorption unit adsorbs moisture contained in the moisture-containing air to generate heated dry air, and the heating unit evaporates the moisture adsorbed in the adsorption unit to generate cooled humidified air. In addition, the heat exchanger exchanges heat between the heated dry air or the cooled humidified air and a fluid to generate air for cooling the vehicle cabin or air for heating the vehicle cabin. As a result, when cooling the vehicle cabin, the heated dry air can be cooled to generate cooled air for the vehicle cabin, and when heating the vehicle cabin, the cooled humidified air can be heated to generate heated air for the vehicle cabin. Furthermore, when heating the vehicle cabin, the heated dry air can be heated to generate heated air for the vehicle cabin, making dehumidification and heating possible. As a result, a vehicle air conditioning system capable of various humidity control has been provided.

[0008] In addition, since the air for heating and cooling the vehicle compartment is generated by the heat exchanger, the adsorption section, and the heating section, the configuration can be simplified compared to conventional compression type air conditioners, which allows the vehicle air conditioning system to be made smaller and less expensive. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a circuit configuration diagram of a vehicle air conditioning system. [Diagram 2] FIG. 1 is a diagram showing the layout of a vehicle air conditioning system. [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 the coolant in a second state. [Diagram 5] FIG. 11 is a circuit configuration diagram of a vehicle air conditioning system according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The vehicle air conditioning system according to the present invention is configured to be able to cool and heat the vehicle interior. Hereinafter, a vehicle air conditioning system A according to the present embodiment will be described. However, the vehicle air conditioning system A is not limited to the following embodiment, and various modifications are possible without departing from the gist of the invention.

[0011] FIG. 1 is a diagram showing the circuit configuration of a vehicle air conditioning system A. The vehicle air conditioning system A is mounted on a vehicle, and as shown in FIG. 1, includes a refrigerant module B, a coolant module C, and an HVAC (Heating, Ventilation, and Air Conditioning) unit D (an example of an "air conditioning unit"). The refrigerant module B is provided with a refrigerant flow path B1 and configured as a refrigerant manifold. The coolant module C is provided with a coolant flow path C1 and 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 engraved. The flow path housing is formed of a metal material having high thermal conductivity, including aluminum.

[0012] A refrigerant such as hydrofluorocarbon (HFC) or hydrofluoroolefin (HFO) flows through the refrigerant flow path B1, and a coolant such as antifreeze or long-life coolant mainly composed of ethylene glycol or the like, or a coolant composed of insulating oil such as paraffin flows through the coolant flow path C1. FIG. 2 shows the arrangement of the refrigerant module B, the coolant module C, and the HVAC 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 with the vehicle air conditioning system A mounted on the vehicle is indicated as F, and the rear side in the traveling direction is indicated as R. The coolant module C is provided with ports PO1 and PO2 through which the coolant is introduced and discharged.

[0013] 1 and 2, the refrigerant flow path B1 circulates the refrigerant between the water-cooled condenser 12 and the chiller 14. The refrigerant module B is configured to allow the refrigerant to flow between the accumulator 10, the compressor 11, the water-cooled condenser 12 (an example of a "condenser"), the expansion valve 13, and the chiller 14 (an example of an "evaporator") via the refrigerant flow path B1.

[0014] 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.

[0015] The compressor 11 compresses the refrigerant 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.

[0016] The refrigerant that has passed through the compressor 11 flows through the water-cooled condenser 12. The water-cooled condenser 12 is configured such 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 from 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.

[0017] 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 .

[0018] The refrigerant flows through the chiller 14 via the fourth refrigerant passage 24. As described above, the refrigerant expanded by the expansion valve 13 and turned into a low-temperature, low-pressure mist flows through the fourth refrigerant passage 24, 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 heat exchanger 52 flows into the chiller 14 from the third coolant passage 33, and the coolant flows out from the fourth coolant passage 34. The third coolant passage 33 and the fourth coolant passage 34 are configured separately from the fourth coolant passage 24. In the chiller 14, the mist refrigerant absorbs heat from the coolant and evaporates. The evaporated and vaporized refrigerant flows through the fifth refrigerant passage 25 to the accumulator 10.

[0019] Further, the coolant flow path C1 passes through the coolant which exchanges heat with the refrigerant in the water-cooled condenser 12 and the chiller 14. The coolant module C is configured to allow the coolant to flow through the coolant flow path C1 among the water-cooled condenser 12, the chiller 14, the switching valve 42, the radiator 43, and the heat exchanger 52 by the first pump P1 and the second pump P2.

[0020] As described above, the water-cooled condenser 12 is configured so that the coolant flows in through the first coolant flow path 31 and 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.

[0021] The switching valve 42 is configured to allow the flow of cooling liquid from the water-cooled condenser 12 and the chiller 14. The cooling liquid is sent to the switching valve 42 from the water-cooled condenser 12 via the second cooling liquid flow path 32, and the cooling liquid is sent from the chiller 14 via the fourth cooling liquid flow path 34. A second pump P2 is provided in the fourth cooling liquid flow path 34, and the second pump P2 sends the cooling liquid from the chiller 14 to the switching valve 42. The switching valve 42 is configured to allow the cooling liquid to be sent to the fifth cooling liquid flow path 35 and the sixth cooling liquid flow path 36.

[0022] The coolant sent from the switching valve 42 to the fifth coolant flow path 35 flows through the heat exchanger 52. The coolant sent to the heat exchanger 52 is configured to be capable of being sent to the water-cooled condenser 12 via the first coolant flow path 31, and is also configured to be capable of being sent to the chiller 14 via the third coolant flow path 33.

[0023] 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 with outside air occurs, and the coolant is cooled. After the heat exchange, the coolant is sent to the first coolant flow path 31 via the seventh coolant flow path 37.

[0024] The HVAC unit D includes a blower 51, a heat exchanger 52, a desiccant 53 (a drying material, an example of an “adsorption unit”), and an electric heater 54 (an example of a “heating unit”). The blower 51 draws in outside air and sends the drawn-in outside air to the heat exchanger 52.

[0025] The heat exchanger 52 exchanges heat between the air and the coolant for cooling and heating the vehicle interior. The air is the outside air sucked in by the blower 51. The coolant is introduced into the heat exchanger 52 through the fifth coolant flow path 35 as described above, and the coolant is sent to one or both of the first coolant flow path 31 and the third coolant flow path 33. Therefore, in the heat exchanger 52, heat exchange is performed between the outside air sent from the blower 51 and the coolant supplied through the fifth coolant flow path 35, and the air after the heat exchange is introduced into the vehicle interior. Specifically, when the outside air is cooled in the heat exchanger 52, cold air is introduced into the vehicle interior, and when the outside air is heated in the heat exchanger 52, warm air is introduced into the vehicle interior. This makes it possible to cool or heat the vehicle interior.

[0026] The desiccant 53 adsorbs moisture contained in the moisture-containing air to generate heated dry air. The desiccant 53 functions as an adsorption section that adsorbs moisture, and can be configured using an adsorbent such as zeolite, silica gel, or activated carbon. The desiccant 53 is provided between the blower 51 and the heat exchanger 52. Therefore, the outside air sent from the blower 51 is discharged to the heat exchanger 52 via the desiccant 53.

[0027] The electric heater 54 evaporates the moisture adsorbed in the desiccant 53 to generate cooled humidified air. The electric heater 54 functions as a heating unit that evaporates the moisture adsorbed in the desiccant 53. As shown in FIG. 1, the electric heater 54 is attached to the desiccant 53, for example. In this case, the desiccant 53 is heated by the electric heater 54, so that the moisture adsorbed in the desiccant 53 evaporates. The electric heater 54 may be provided at a position upstream of the desiccant 53 and spaced apart from the desiccant 53, without being attached to the desiccant 53. In this case, the air heated by the electric heater 54 is supplied to the desiccant 53, so that the moisture adsorbed in the desiccant 53 evaporates. In this way, the moisture adsorbed in the desiccant 53 evaporates, and the air supplied to the desiccant 53 is humidified by the evaporated moisture, so that cooled humidified air is generated. The heating section for evaporating the moisture adsorbed in the desiccant 53 may be an air heating device other than the electric heater 54 .

[0028] When moisture-containing air is supplied from the blower 51 to the desiccant 53 in a state where moisture is not adsorbed to the desiccant 53, the desiccant 53 adsorbs the moisture in the moisture-containing air to reduce the humidity of the moisture-containing air. As a result, the moisture-containing air supplied to the desiccant 53 becomes dry air dehumidified by the desiccant 53 and is discharged to the heat exchanger 52.

[0029] On the other hand, when the desiccant 53 is heated by the electric heater 54 or when high-temperature air from the blower 51 is supplied to the desiccant 53 while moisture is adsorbed in the desiccant 53, the desiccant 53 desorbs the adsorbed moisture, and the air is humidified by the desorbed moisture. As a result, the air supplied to the desiccant 53 becomes moist air humidified by the desiccant 53 and is discharged to the heat exchanger 52.

[0030] The heat exchanger 52 exchanges heat between the heated dry air or the cooled humidified air and the coolant to generate air for cooling the vehicle interior or air for heating the vehicle interior. Thus, the heat exchanger 52 exchanges heat between the dry air and the coolant introduced through the fifth coolant flow path 35 to generate air for cooling the vehicle interior. The heat exchanger 52 also exchanges heat between the humidified air and the coolant introduced through the fifth coolant flow path 35 to generate air for heating the vehicle interior. Furthermore, the heat exchanger 52 can also exchange heat between the dry air and the coolant introduced through the fifth coolant flow path 35 to generate air for heating the vehicle interior. In this case, for example, when using a defroster function in winter, dehumidified heated air can be supplied to the vehicle interior. By introducing such air for cooling the vehicle interior or air for heating the vehicle interior into the vehicle interior, it is possible to adjust the humidity in the vehicle interior.

[0031] As described above, the switching valve 42 is configured to allow the flow of the coolant from the water-cooled condenser 12 and the coolant from the chiller 14. When comparing the coolant from the water-cooled condenser 12 with the coolant from the chiller 14, the temperature of the coolant from the water-cooled condenser 12 is relatively higher than the temperature of the coolant from the chiller 14. Therefore, when heating the vehicle interior, the switching valve 42 is set to a first state in which the coolant is circulated through the water-cooled condenser 12, and when cooling the vehicle interior, the switching valve 42 is set to a second state in which the coolant is circulated through the chiller 14.

[0032] 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, it is possible to mix the relatively high-temperature coolant from the water-cooled condenser 12 and the relatively low-temperature coolant from the chiller 14 and send the mixed mixture to the fifth coolant flow path 35.

[0033] In this embodiment, as shown in FIG. 2, the refrigerant module B and the coolant module C are integrated with the HVAC unit D. Here, "integration" means that the refrigerant module B and the coolant module C are fixed to the HVAC unit D with bolts or the like. This "integration" also includes forming the same case by combining the materials of the HVAC unit D, the refrigerant module B, and the coolant module C. Specifically, as shown in FIG. 2A, when the HVAC unit D is mounted on a vehicle, the refrigerant module B is provided on the front side of the HVAC unit D in the traveling direction of the vehicle. As a result, as shown in FIG. 2A and FIG. 2B, the water-cooled condenser 12, the expansion valve 13, and the chiller 14 can be disposed in the front of the vehicle, so that the traveling wind can be blown on the water-cooled condenser 12, the expansion valve 13, and the chiller 14 as the vehicle travels. Therefore, it is possible to prevent condensation on the water-cooled condenser 12, the expansion valve 13, and the chiller 14.

[0034] 2B, when the HVAC unit D is mounted on the vehicle, the coolant module C is provided on the left side of the vehicle in the HVAC unit D. This makes it possible to easily ensure the introduction and discharge routes of the coolant in the coolant module C by providing ports PO1 and PO2 as shown in FIG. 2B. Also, by arranging the first pump P1, the second pump P2, and the switching valve 42 on the side of the HVAC unit D, it becomes possible to improve maintainability.

[0035] Other embodiments Next, other embodiments of the vehicle air conditioning system A will be described.

[0036] In the above embodiment, an example in which the vehicle air conditioning system A is configured by disposing one heat exchanger 52 in the HVAC unit D has been shown. Alternatively, as shown in FIG. 5, the vehicle air conditioning system A may be configured by disposing two heat exchangers 52A and 52B in the HVAC unit D. In the example shown in FIG. 5, the heat exchanger 52 in the HVAC unit D is configured by a first heat exchanger 52A that exchanges heat with the chiller 14 and a second heat exchanger 52B that exchanges heat with the water-cooled condenser 12. A third pump P3 is provided in the third coolant flow path 33, and the coolant is sent from the chiller 14 to the first heat exchanger 52A by this third pump P3. The heat exchangers 52A and 52B are both arranged in parallel toward the downstream side of the desiccant 53, and are arranged in the order of the first heat exchanger 52A and the second heat exchanger 52B toward the downstream side. One of the heat exchangers 52A and 52B may be disposed upstream of the desiccant 53, and the other may be disposed downstream of the desiccant 53.

[0037] In the above embodiment, the vehicle air conditioning system A has been described as being provided with a switching valve 42 that can be switched between a first state in which the coolant is circulated to the water-cooled condenser 12 and a second state in which the coolant is circulated to the chiller 14 in the coolant flow passage C1. However, the vehicle air conditioning system A can be configured without the switching valve 42. In this case, a flow passage for circulating the coolant between the water-cooled condenser 12 and the heat exchanger 52 and a flow passage for circulating the coolant between the chiller 14 and the heat exchanger 52 are provided separately (independently), and an opening / closing valve is further provided in each flow passage. By switching each of these opening / closing valves between an open state and a closed state, the coolant from the water-cooled condenser 12 and the coolant from the chiller 14 can be circulated to the heat exchanger 52. It is also possible to configure the coolant flow passage C1 to simultaneously circulate the coolant from the water-cooled condenser 12 and the coolant from the chiller 14 through the heat exchanger 52.

[0038] In the above embodiment, the switching valve 42 is described as being capable of changing the opening degree so as to simultaneously realize the first state and the second state. However, the switching valve 42 may be configured so as not to simultaneously realize the first state and the second state. For example, by changing the period during which the coolant circulates through the first heat exchanger 52A and the second heat exchanger 52B shown in FIG. 5, the air conditioning temperature can be changed in multiple stages.

[0039] In the above embodiment, the coolant module C having the coolant flow path C1 has a heat exchanger 52 and is integrated with the HVAC unit D that cools and heats the vehicle cabin. However, it is also possible to configure the coolant module C without integrating it with the HVAC unit D. Furthermore, in the above embodiment, the refrigerant module B having the refrigerant flow path B1 has a heat exchanger 52 and is integrated with the HVAC unit D that cools and heats the vehicle cabin. However, it is also possible to configure the refrigerant module B without integrating it with the HVAC unit D.

[0040] [Summary of the above embodiment] Hereinafter, in the above-described embodiment, the following configurations are envisioned. <1> One embodiment of the vehicle air conditioning system (A) includes a blower (51) that draws in outside air, a heat exchanger (52) that exchanges heat between the outside air and a fluid and is capable of cooling or heating the outside air, an adsorption section (53) that adsorbs moisture contained in moisture-containing air to generate heated dry air, and a heating section (54) that evaporates the moisture adsorbed in the adsorption section (53) to generate cooled humidified air, and the heat exchanger (52) exchanges heat between the heated dry air or the cooled humidified air and the fluid to generate air for cooling the passenger compartment or air for heating the passenger compartment.

[0041] According to this embodiment, the adsorption section (53) adsorbs moisture contained in the moisture-containing air to generate heated dry air, and the heating section (54) evaporates the moisture adsorbed in the adsorption section to generate cooled humidified air. The heat exchanger (52) exchanges heat between the heated dry air or the cooled humidified air and a fluid to generate air for cooling the vehicle compartment or air for heating the vehicle compartment. Thus, when cooling the vehicle compartment, the heated dry air can be cooled to generate cooled air for the vehicle compartment, and when heating the vehicle compartment, the cooled humidified air can be heated to generate heated air for the vehicle compartment. Furthermore, when heating the vehicle compartment, the heated dry air can be heated to generate heated air for the vehicle compartment, thereby enabling dehumidification and heating. As a result, a vehicle air-conditioning system (A) capable of performing various humidity control operations can be provided.

[0042] In addition, since the heat exchanger (52) generates air for heating and cooling the passenger compartment through the heat exchanger (52), the adsorption section (53), and the heating section (54), the configuration can be simplified compared to conventional compression type air conditioners, thereby enabling the vehicle air conditioning system (A) to be made smaller and less expensive.

[0043] <2> The fluid is preferably a cooling liquid that exchanges heat with a refrigerant circulating between the condenser (12) and the evaporator (14).

[0044] According to this configuration, when the vehicle interior is heated, the coolant heated by the refrigerant flowing through the condenser (12) is circulated through the heat exchanger (52) to exchange heat with outside air, and when the vehicle interior is cooled, the coolant cooled by the refrigerant flowing through the evaporator (14) is circulated through the heat exchanger (52) to exchange heat with outside air. By configuring the heat exchanger (52) to exchange heat between the outside air and the coolant in this manner, the heat exchanger (52) can be simply configured. This allows the vehicle air conditioning system (A) to be made smaller and less expensive.

[0045] <3> It is preferable that a switching valve (42) is disposed in the cooling liquid flow path (C1) through which the cooling liquid flows, the switching valve (42) being switchable between a first state in which the cooling liquid is circulated through the condenser (12) and a second state in which the cooling liquid is circulated through the evaporator (14).

[0046] According to this configuration, when the vehicle interior is heated, the switching valve (42) is switched to the first state, so that the cooling liquid warmed in the condenser (12) can flow through the heat exchanger (52), and when the vehicle interior is cooled, the switching valve (42) is switched to the second state, so that the cooling liquid cooled in the evaporator (14) can flow through the heat exchanger (52). In this way, the switching valve (42) can easily switch the cooling liquid to be flowed through the heat exchanger (52).

[0047] <4> The cooling system preferably includes an air conditioning unit (D) having a blower (51), a heat exchanger (52), an adsorption section (53), and a heating section (54), and a coolant module (C) having a coolant flow path (C1) through which the coolant flows, and the air conditioning unit (D) and the coolant module (C) are integrated into one body.

[0048] According to this configuration, since the air conditioning unit (D) and the coolant module (C) are integrated, the coolant from the coolant module (C) can be easily routed through a flow path to the heat exchanger (52) of the air conditioning unit (D). In addition, since the flow path from the coolant module (C) to the air conditioning unit (D) can be shortened, this contributes to the miniaturization and cost reduction of the vehicle air conditioning system (A). [Industrial Applicability]

[0049] The present invention can be widely used in vehicle air conditioning systems. [Explanation of symbols]

[0050] 51: Blower, 52: Heat exchanger, 52A: First heat exchanger, 52B: Second heat exchanger, 53: Desiccant (adsorption section), 54: Electric heater (heating section), A: Vehicle air conditioning system, B: Refrigerant module, B1: Refrigerant flow path, C: Coolant module, C1: Coolant flow path, D: HVAC unit (air conditioning unit)

Claims

1. A blower that draws in outside air; a heat exchanger capable of exchanging heat between the outside air and a fluid and cooling or heating the outside air; an adsorption section that adsorbs moisture contained in moisture-containing air to generate heated dry air; a heating unit that evaporates the moisture adsorbed by the adsorption unit to generate cooled and humidified air, The heat exchanger is a vehicle air conditioning system that generates air for cooling a vehicle compartment or air for heating a vehicle compartment by exchanging heat between the heated dry air or the cooled humidified air and the fluid.

2. 2. The vehicle air conditioning system of claim 1, wherein the fluid is a coolant that exchanges heat with a refrigerant circulating between a condenser and an evaporator.

3. 3. The vehicle air conditioning system according to claim 2, wherein a switching valve is disposed in a coolant flow path through which the coolant flows, the switching valve being switchable between a first state in which the coolant is circulated through the condenser and a second state in which the coolant is circulated through the evaporator.

4. an air conditioning unit having the blower, the heat exchanger, the adsorption unit, and the heating unit; a coolant module having a coolant flow path through which the coolant flows; 4. A vehicle air conditioning system according to claim 2 or 3, wherein the air conditioning unit and the coolant module are integrated together.

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