JP2006273150A - On-vehicle air-conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle air-conditioner which is mounted on a vehicle having a constant-temperature chamber to perform cold storage or heated storage of an article therein, and capable of cooling or heating the inside of a cabin C even when the vehicle is stopped for a long time while a vehicular engine EG is stopped. <P>SOLUTION: The on-vehicle air-conditioner comprises an in-chamber heat exchanger 31 to exchange heat between the air in a constant-temperature chamber 100 and a heating medium, an in-cabin heat exchanger 32 provided in a cabin C, a heating medium circulating passage 36 formed between the heat exchangers 31, 32, a water pump 33 provided in the heating medium circulating passage 36 to circulate the heating medium, and a blower 34 to blow the air heat-exchanged with the heating medium into the cabin C by circulating the air in the in-cabin heat exchanger 32. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an in-vehicle air conditioner that is mounted on a vehicle having a thermostatic chamber that cools and keeps articles inside.

  Conventionally, in truck vehicles such as refrigeration vehicles, the refrigeration cycle is operated using the vehicle engine as a drive source. However, in recent years, when stopping for a long time, such as when loading or unloading luggage, the vehicle engine is stopped due to environmental problems, and instead There is a transport refrigeration apparatus that keeps the inside of the freezer at a low temperature even when the vehicle is stopped by driving a compressor of a refrigeration cycle with an electric motor that is rotated by power supplied from a ground power source. Patent Document 1 below is an example.

Also, it is applied to truck vehicles, etc., and it shows cooling performance of the passenger compartment when stopping and stopping the vehicle engine, such as when loading and unloading luggage and when stopping idling while waiting for a signal. There is a regenerative air conditioner that creates ice by a refrigeration cycle and cools the passenger compartment by the melting latent heat of the ice when the vehicle stops, and Patent Document 2 below is an example.
JP-A-10-253175 JP 2002-337541 A

  However, the transport refrigeration apparatus of Patent Document 1 has a problem that even if the inside of the freezer can be kept at a low temperature, the vehicle interior cannot be cooled because the vehicle engine is stopped. Moreover, in the cool storage type air conditioner of the above-mentioned Patent Document 2, it is necessary to increase the amount of cold storage in order to cope with the recent increase in stop time. However, the cold storage by ice increases the weight and corresponds to the stop time. Since cold storage time is required, there is a problem that it is not possible to sufficiently respond to a long stop.

  The present invention has been made in view of the above-mentioned problems of the prior art, and its purpose is to mount a vehicle having a constant temperature storage for keeping the article cold and warm inside and stopping the vehicle engine. An object of the present invention is to provide an in-vehicle air conditioner capable of cooling or heating a passenger compartment even when the vehicle is stopped for a long time.

In order to achieve the above object, the present invention employs technical means described in claims 1 to 6. That is, in the invention according to claim 1, a thermostatic chamber (100) that is mounted on a vehicle and that cools and keeps an article inside,
An internal heat exchanger (31) for exchanging heat between the air in the thermostat (100) and the heat medium;
A passenger compartment heat exchanger (32) provided in the passenger compartment (C);
A heat medium circuit (36) formed between the heat exchangers (31, 32);
A heat medium circulation means (33) provided in the heat medium circulation path (36) for circulating the heat medium;
It is characterized by comprising air blowing means (34) for circulating air through the vehicle interior heat exchanger (32) and blowing out the air heat exchanged with the heat medium into the vehicle interior (C).

  In the present invention, the inside of the thermostatic chamber (100) is always kept at a low temperature or a warmed state by a standby operation or the like for maintaining the quality of the article (N) even when the vehicle engine (EG) is stopped for a long time. The heat medium cooled or heated by the cold heat in the constant temperature chamber (100) is circulated through the heat exchanger (32) installed in the passenger compartment (C), and the passenger compartment (C It is a device that cools or heats the inside.

  According to the first aspect of the present invention, the vehicle is mounted on a vehicle having a constant temperature chamber (100) that keeps the article (N) cold and insulated inside, and the vehicle engine (EG) is stopped for a long time. The inside of the passenger compartment (C) and the nap bed (B, see FIG. 1) can be cooled or heated. Moreover, since a cool storage part is not required compared with the conventional cool storage type air conditioner, it is possible to reduce the size and weight. Moreover, it can also be used as auxiliary cooling or auxiliary heating by being operated during traveling, and for example, can be used for cooling or heating the nap bed part (B).

Moreover, in invention of Claim 2, in the vehicle-mounted air conditioner of Claim 1,
The refrigerant compressor (5A, 5B) of the refrigeration cycle (R) that cools and heats the temperature chamber (100) is an electric motor (4) that is rotated by power supplied from the vehicle engine (EG) or the ground power supply (E). ).

  According to the second aspect of the present invention, the refrigerant compressor (5A, 5B) of the refrigeration cycle (R) is driven by the vehicle engine (EG) while the vehicle is running, and by the standby device while the vehicle is stopped for a long time. Since it is driven by the electric motor (4) that is rotated by power supply from the ground power supply (E), the inside of the thermostatic chamber (100) can always be kept at a low temperature or a warmed state. In addition, since the on-vehicle air conditioner can be operated by supplying ground power (E) from the standby unit (3) of the refrigeration system while the vehicle is stopped, it can be used for a long time while the vehicle engine (EG) is stopped. There is no burden on the battery.

Moreover, in invention of Claim 3, in the vehicle-mounted air conditioner of Claim 1,
A heat storage means (20) for exchanging heat with the vehicle interior heat exchanger (32) is provided. According to the third aspect of the invention, the vehicle interior heat exchanger (32) cools the heat storage means (20) such as a cold storage material, and cools the vehicle interior (C) with its latent heat of melting. By using the heat storage means (20) as a medium, the temperature blown into the passenger compartment (C) can be made constant and stable. In addition, since the cooling or heating can always be performed, the device can be reduced in size and weight.

Moreover, in invention of Claim 4, in the vehicle-mounted air conditioner of any one of Claim 1 thru | or 3,
A cooling water inflow passage (46) for allowing the cooling water of the vehicle engine (EG) to flow into one of the heat medium circulation passages (36) connecting the heat exchangers (31, 32);
An inflow side flow path switching means (47) provided at a connection portion between the heat medium circulation path (36) and the cooling water inflow path (46);
A cooling water outflow passage (48) through which cooling water flows out from the other of the heat medium circulation passage (36) connecting the heat exchangers (31, 32) to the vehicle engine (EG);
An outflow side flow path switching means (49) provided at a connection portion between the heat medium circulation path (36) and the cooling water outflow path (48) is provided.

Moreover, in invention of Claim 5, in the vehicle-mounted air conditioner of any one of Claim 1 thru | or 3,
A cooling water inflow passage (46) for allowing the cooling water of the vehicle engine (EG) to flow into one of the heat medium circulation passages (36) connecting the heat exchangers (31, 32);
An inflow side passage intermittent means (50) provided in the cooling water inflow passage (46);
A cooling water outflow passage (48) through which cooling water flows out from the other of the heat medium circulation passage (36) connecting the heat exchangers (31, 32) to the vehicle engine (EG);
The present invention is characterized in that an outflow side channel intermittent means (51) provided in the cooling water outflow channel (48) is provided.

  According to the inventions of the fourth and fifth aspects, by connecting to the cooling water circuit of the vehicle engine (EG), the internal heat exchanger (31) is placed in the constant temperature storage (100) in winter. It becomes possible to use as a heating device. Moreover, it becomes possible to use as an auxiliary heating apparatus in a vehicle interior (C). By the way, according to the invention described in claim 4, the heating of the constant temperature chamber (100) and the heating of the passenger compartment (C) can be selectively switched by the both flow path switching means (47, 49). Thus, according to the fifth aspect of the present invention, the heating of the constant temperature chamber (100) and the heating of the passenger compartment (C) can be simultaneously turned ON / OFF by the both passage intermittent means (50, 51). It becomes like this.

Moreover, in invention of Claim 6, in the vehicle-mounted air conditioner of any one of Claim 5 or Claim 6,
The engine cooling water is used as a heat medium. According to the sixth aspect of the present invention, the engine cooling water by an antifreeze such as LLC is used as a heat medium so that the connection between the constant temperature chamber (100) and the passenger compartment (C) is not an air duct but a hose. Therefore, it is possible to prevent the smell in the temperature-controlled room (100) from being brought into the passenger compartment (C) and to easily cope with the tilt of the cabin portion in the truck vehicle.

  Moreover, it becomes possible to connect with the cooling water circuit of a vehicle engine (EG) like invention of Claim 5 or Claim 6, and the cold / hot heat in a thermostat (100) and vehicle engine (EG) It becomes possible to selectively use exhaust heat. Incidentally, the reference numerals in parentheses of the above means are examples showing the correspondence with the specific means described in the embodiments described later.

(First embodiment)
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic diagram showing a side cross section of a truck vehicle equipped with an in-vehicle air conditioner according to an embodiment of the present invention, and FIG. 2 is a configuration of a refrigeration cycle R that cools the constant temperature chamber 100 of FIG. It is a schematic diagram which shows an outline. FIG. 3 is a schematic diagram showing an outline of the configuration of the in-vehicle air conditioner according to the first embodiment of the present invention.

  FIG. 1 shows a truck vehicle equipped with a thermostat 100 such as a freezer / refrigerator / warm warehouse that keeps the article N cold and warm inside, and will be described as a freezer 100 in the following embodiments. The refrigeration cycle R for cooling the freezer 100 is roughly composed of a condensing unit 1 installed outside the freezer 100, an evaporator unit 2 installed in the freezer 100, and a standby unit installed under the floor of the freezer 100. The refrigeration cycle R includes two refrigerant compressors (hereinafter referred to as compressors) 5A and 5B, and these compressors 5A and 5B are incorporated in parallel in the refrigerant circuit.

  The vehicle engine EG and the first compressor 5A are installed in the engine room, and the electric motor 4 and the second compressor 5B are installed under the floor of the freezer 100. When the vehicle engine EG is in operation, the first compressor 5A is driven by the vehicle engine EG, and when the vehicle is parked at a pickup place equipped with a ground power supply facility, the ground power source E configured in the standby unit 3 The second compressor 5B is driven by the electric motor 4 that is rotated by power feeding.

  Therefore, when the first compressor 5A is driven by the vehicle engine EG, the compressed refrigerant discharged from the first compressor 5A passes through the first check valve 21 and is installed in the condensing unit 1 (hereinafter referred to as a refrigerant radiator). (Referred to as a capacitor). On the way, the compressor oil is separated by the oil separator 15, and the separated compressor oil is supplied to the suction side of the compressor through the capillary tube 16.

  The refrigerant sent to the condenser 6 dissipates heat to the outside air blown by the condenser fan 7 in the process of flowing and condensates. The condenser fan 7 includes a fan 7a and a motor 7b that drives the fan 7a. Then, the condensed and liquefied liquid refrigerant is sent to an expansion valve 10 disposed in the evaporator unit 2 through a receiver 8 and a dryer (not shown).

  The liquid refrigerant is adiabatically expanded by being throttled in the process of flowing through the expansion valve 10. Next, the liquid refrigerant evaporates by cooling the internal air blown by the evaporator fan 12 driven by the motor 13 in the process of flowing through the refrigerant evaporator (hereinafter referred to as an evaporator) 11, and then the accumulator. 14 and sucked into the first compressor 5A.

  The evaporator fan 12 includes a fan 12a and a motor 12b that drives the fan 12a. Also, reference numeral 13 in FIG. 2 exchanges heat between the high-pressure refrigerant that has flowed out of the condenser 6 (refrigerant before being decompressed by the expansion valve 10) and the low-pressure refrigerant that has flowed out of the evaporator 11 and is sucked into the compressors 5A and 5B. It is an internal heat exchanger.

  Next, when the second compressor 5B is driven by the electric motor 4, the refrigerant discharged from the second compressor 5B passes through the second check valve 22, then goes through the same path as above, and cools down from the accumulator 14. It returns to the second compressor 5B after passing through an SPR (suction pressure regulator) valve 19 for preventing an overload operation such as an initial stage.

  If the internal temperature detected by an internal temperature sensor (not shown) is lowered to a set temperature or lower by this cooling operation, the heating operation is performed. For this heating operation, a hot gas bypass passage 17 is provided that communicates the discharge side of the compressors 5A and 5B with the downstream side of the expansion valve 10 and the upstream side of the evaporator 11.

  The hot gas bypass flow path 17 is provided with a first electromagnetic valve 18 as an opening / closing means, and when the first electromagnetic valve 18 is opened and hot gas is supplied to the evaporator 11, a reverse flow to the capacitor 6 side. A second electromagnetic valve 9 is provided between the receiver 8 and the expansion valve 10 as an opening / closing means for preventing the above. During the heating operation, the first electromagnetic valve 18 is opened and the second electromagnetic valve 9 is closed.

  Therefore, after the compressed refrigerant discharged from the compressors 5A and 5B flows through the evaporator 11 through the hot gas bypass channel 17 and the first electromagnetic valve 18, the internal air is heated and then passes through the accumulator 14 and the compressor 5A.・ Return to 5B. By repeating the cooling operation and the heating operation, the internal temperature in the freezer 100 is maintained at the set temperature.

  Next, the vehicle-mounted air conditioner of this embodiment will be described with reference to FIGS. 1 and 3. The in-vehicle air conditioner according to the present embodiment includes an in-compartment heat exchanger 31 in the freezer 100 and a cabin heat exchanger 32 in a cabin (cabinet) C, and between the heat exchangers 31 and 32. A water pump (heat medium circulation means) 33 that forms a hose path as the heat medium circulation path 36, encloses engine cooling water as a heat medium, and circulates the coolant in one place of the heat medium circulation path 36 is provided. is there.

  The internal heat exchanger 31 is provided with a duct portion 31a in a part of the flow returned to the evaporator unit 2 after the cool air blown out from the evaporator unit 2 in the freezer 100 cools the article N, and is disposed therein. (See FIG. 1). The vehicle interior heat exchanger 32 is also disposed in a case 35 serving as an air flow path. For example, a blower 34 serving as a blowing means is provided at an outlet 35b provided above the driver D.

  Next, the operation according to the above configuration will be described. The inside of the freezer 100 is cooled by blowing cold air from the evaporator 11, and the cooling water enclosed by the internal heat exchanger 31 installed in the duct portion 31a through which the cooling air flows is cooled. The cooled cooling water is circulated to the vehicle interior heat exchanger 32 by the operation of the water pump 33. On the other hand, the operation of the blower 34 causes the passenger compartment air to be taken in from a suction port 35a provided in the lower part of the cabin C, and the passenger compartment air is cooled by exchanging heat with cooling water in the process of flowing through the passenger compartment heat exchanger 32. The inside of the cabin C is cooled by blowing the cooling air into the cabin C.

  In addition, since the constant temperature storage 100 is a freezer in this embodiment, the inside of the cabin C can be cooled using the cold heat of the freezer 100, and if the constant temperature storage 100 heats the goods N, it will be. Thus, the cabin C can be heated using the heat of the warm storage 100.

  Next, features and effects of this embodiment will be described. First, in a constant temperature chamber 100 that is mounted on a vehicle and that cools and warms articles inside, an in-compartment heat exchanger 31 that exchanges heat between the air in the constant temperature chamber 100 and a heat medium, and the cabin C The vehicle interior heat exchanger 32 provided, the heat medium circulation path 36 formed between the heat exchangers 31 and 32, the water pump 33 provided in the heat medium circulation path 36 for circulating the heat medium, the vehicle There is provided a blower 34 that causes air to flow through the indoor heat exchanger 32 and blows out the air exchanged with the heat medium into the cabin C.

  The present invention focuses on the fact that the inside of the thermostatic chamber 100 is always kept at a low temperature or a warm state by standby operation or the like in order to maintain the quality of the article N even when the vehicle engine EG is stopped for a long time. There is a device that circulates the heat medium cooled or heated by the cold heat in the thermostat 100 to the heat exchanger 32 installed in the cabin C, and cools or heats the cabin C as well.

  According to this, it is mounted on a vehicle having a constant temperature storage 100 that keeps the article N cold and warm inside, and the cabin C and the nap bed part B are cooled even during a long stoppage with the vehicle engine EG stopped. Or it can be heated. Moreover, since a cool storage part is not required compared with the conventional cool storage type air conditioner, it is possible to reduce the size and weight. Moreover, it can also be used as auxiliary cooling or auxiliary heating by being operated during traveling, and for example, can be used for cooling or heating the nap bed portion B.

  Further, the refrigerant compressors 5A and 5B of the refrigeration cycle R that cools and heats the constant temperature chamber 100 are driven by either the vehicle engine EG or the electric motor 4 that is rotated by power supply from the ground power source E.

  According to this, the refrigerant compressors 5A and 5B of the refrigeration cycle R are driven by the vehicle engine EG while the vehicle is running, and the electric motor 4 that is rotated by the power supply from the ground power source E by the standby device while the vehicle is stopped for a long time. Therefore, the inside of the thermostatic chamber 100 can always be kept at a low temperature or a warmed state. In addition, since the on-vehicle air conditioner can be operated by supplying ground power E from the standby unit 3 of the refrigeration unit while the vehicle is stopped, the battery is burdened even if the vehicle engine EG is stopped for a long time. There is no.

(Second Embodiment)
FIG. 4 is a schematic diagram showing a configuration outline of an in-vehicle air conditioner according to the second embodiment of the present invention. As a feature different from the first embodiment described above, the heat storage pack 20 is provided as heat storage means for exchanging heat with the vehicle interior heat exchanger 32. As shown in FIG. 4, the vehicle interior heat exchanger 32 is formed by bending a flat tube 32a through which a refrigerant flows in a meandering manner so as to have a plurality of bent portions. The flat tube 32a is made of a metal such as aluminum. The cold storage pack 20 is formed in a long and narrow tank shape with a resin material and encloses a cold storage material such as an antifreeze therein.

  A plurality of cool storage packs 20 (five in the example of FIG. 4) are disposed so as to be in close contact with each other between the opposing flat tubes 2 a of the vehicle interior heat exchanger 32. In the regenerator pack 20, a surface closely contacting the surface of the flat tube 32a, that is, a surface in the vertical direction in FIG. 4 is formed with a large number of recesses 20a, and a plurality of air passages 20a for circulating air are formed by the recesses 20a. Is done.

  According to this, the cold storage pack 20 such as a cold storage material is cooled by the vehicle interior heat exchanger 32, and the vehicle compartment (C) is cooled by the latent heat of fusion, that is, the heat storage means (20) is used as a medium. Thus, the temperature blown out into the cabin C can be made constant and stable. In addition, since the cooling or heating can always be performed, the device can be reduced in size and weight.

(Third embodiment)
FIG. 5 is a schematic diagram showing a configuration outline of an in-vehicle air conditioner according to the third embodiment of the present invention. As a cooling water circuit for the vehicle engine EG, the vehicle engine EG and a radiator 40 that cools the cooling water that cools the vehicle engine EG by exchanging heat with outside air are connected by an introduction path 41 and a reflux path 42. . Further, a water pump 45 that is a mechanical pump that circulates cooling water between the engine EG and the radiator 40 and is driven by being connected to the engine EG by a driving belt is disposed in the middle of the reflux path 42. .

  Further, one end of the bypass passage 43 is connected to the reflux passage 42 at a position upstream of the water pump 45. The other end of the bypass passage 43 is connected to the introduction passage 41 so that the cooling water flowing through the introduction passage 41 can bypass the radiator 40. A well-known wax-type thermostat 44 is disposed as a water temperature control means at a connection portion between the bypass passage 43 and the reflux passage 42.

  As a feature different from the above-described embodiment, the cooling water of the vehicle engine EG is caused to flow into one of the heat medium circulation paths 36 connecting the heat exchangers 31 and 32 of the on-vehicle air conditioner separately from the radiator 40 side. A cooling medium inflow path 46, a three-way valve 47 serving as an inflow side flow path switching means provided at a connection portion between the heat medium circulation path 36 and the cooling water inflow path 46, and a heat medium connecting the heat exchangers 31 and 32 A cooling water outflow passage 48 for allowing the cooling water to flow out from the other of the circulation passages 36 to the vehicle engine EG, and a three-way valve 49 as an outflow side passage switching means provided at a connection portion between the heat medium circulation passage 36 and the cooling water outflow passage 48. Is provided.

  Incidentally, the downstream end of the cooling water outflow path 48 is connected to a position between the thermostat 44 and the water pump 45 in the reflux path 42, and the cooling water is also circulated through the heat medium circulation path 36 by driving the water pump 45. It will be. According to this, by connecting with the cooling water circuit of the vehicle engine EG, the internal heat exchanger 31 can be used as a heating device in the thermostat 100 in winter. Moreover, it becomes possible to use it as an auxiliary heating device in the cabin C. Further, according to the configuration shown in FIG. 5, it is possible to selectively switch between heating of the thermostatic chamber 100 and heating of the cabin C by the both three-way valves 47 and 49.

  Further, engine cooling water is used as a heat medium. According to this, since the engine cooling water by the antifreezing liquid such as LLC is used as a heat medium, the connection between the thermostat 100 and the cabin C can be formed as a hose instead of an air duct or the like. In addition to being able to prevent it from being brought in, it is also easy to cope with the tilt of the cabin portion in a truck vehicle. Moreover, it becomes possible to connect with the cooling water circuit of the vehicle engine EG like this embodiment, and it becomes possible to selectively use the cold / hot heat in the thermostat 100 and the exhaust heat of the vehicle engine EG.

(Fourth embodiment)
FIG. 6 is a schematic diagram showing a configuration outline of an in-vehicle air conditioner according to the fourth embodiment of the present invention. As a feature different from the above-described embodiment, a cooling water inflow path 46 for allowing the cooling water of the vehicle engine EG to flow into one of the heat medium circulation paths 36 connecting the heat exchangers 31 and 32 and the cooling water inflow path 46 are provided. An inflow side on-off valve 50 serving as an inflow side flow path interrupting means, a cooling water outflow path 48 for allowing cooling water to flow out from the other heat medium circulation path 36 connecting the heat exchangers 31 and 32 to the vehicle engine EG, An outflow side opening / closing valve 51 is provided as an outflow side channel intermittent means provided in the water outflow channel 48.

  According to this, by connecting with the cooling water circuit of the vehicle engine EG, the internal heat exchanger 31 can be used as a heating device in the thermostat 100 in winter. Moreover, it becomes possible to use it as an auxiliary heating device in the cabin C. Further, according to the configuration shown in FIG. 6, the heating of the thermostatic chamber 100 and the heating of the cabin C can be simultaneously turned on and off by the both on-off valves 47 and 49.

(Other embodiments)
In the above-described embodiment, the first compressor 5A driven by the vehicle engine EG and the second compressor 5B driven by the electric motor 4 are configured. However, the present invention is not limited to the above-described embodiment. Further, it may be configured by one two-way compressor having an electromagnetic clutch for intermittently driving the driving force from the vehicle engine EG and an electric motor for driving and capable of driving the engine and the motor.

  In the above-described embodiment, the constant temperature chamber 100 has been described as a freezer or refrigerator that cools articles in the warehouse. However, the heat exchanger 11 in the warehouse is a refrigerant radiator, and the heat exchanger 6 outside the warehouse is a refrigerant evaporator. As an example, it may be configured as a warm storage for heating the articles in the warehouse, or a four-way valve or the like may be provided in the refrigeration cycle R to switch between cooling and heating of the articles in the warehouse. . Moreover, in the above-mentioned embodiment, although the vehicle engine EG is a vehicle travel engine, it may be a sub-engine for constant temperature storage operation.

  Moreover, in the above-mentioned embodiment, although the internal heat exchanger 31 is arrange | positioned in the front part in the freezer 100, if it is in a cold wind channel | path, it will not restrict to here, Even if it installs in the rear part of the evaporator 11. Good heat exchange performance may be improved by installing a dedicated ventilation means. Also, cabin equipment such as the vehicle interior heat exchanger 32, water pump 33, and blower 34 is mounted under the nap bed B shown in FIG. It may be used effectively.

It is a schematic diagram which shows the side surface cross section of the truck vehicle carrying the vehicle-mounted air conditioner in one Embodiment of this invention. It is a schematic diagram which shows the structure outline | summary of the refrigerating cycle R which cools the inside of the thermostat 100 of FIG. It is a schematic diagram which shows the structure outline | summary of the vehicle-mounted air conditioner in 1st Embodiment of this invention. It is a schematic diagram which shows the structure outline | summary of the vehicle-mounted air conditioner in 2nd Embodiment of this invention. It is a schematic diagram which shows the structure outline | summary of the vehicle-mounted air conditioner in 3rd Embodiment of this invention. It is a schematic diagram which shows the structure outline | summary of the vehicle-mounted air conditioner in 4th Embodiment of this invention.

Explanation of symbols

4 ... Electric motor 5A ... 1st compressor (refrigerant compressor)
5B ... 2nd compressor (refrigerant compressor)
20 ... heat storage pack (heat storage means)
31 ... Internal heat exchanger 32 ... Interior heat exchanger 33 ... Water pump (heat medium circulation means)
34 ... Blower (blower means)
36 ... Heat medium circulation path 46 ... Cooling water inflow path 47 ... Inflow side three-way valve (inflow side flow path switching means)
48 ... Cooling water outflow passage 49 ... Outflow side three-way valve (outflow side passage switching means)
50 .. Inflow side on-off valve (inflow side channel intermittent means)
51. Outflow side on-off valve (outflow side flow passage intermittent means)
100 ... Freezer, refrigerator, warm storage (constant temperature storage)
C ... Cabin (cabin)
E ... ground power EG ... vehicle engine R ... refrigeration cycle

Claims (6)

A thermostatic chamber (100) that is mounted on a vehicle and that cools and keeps articles inside;
An internal heat exchanger (31) for exchanging heat between the air in the thermostat (100) and the heat medium;
A passenger compartment heat exchanger (32) provided in the passenger compartment (C);
A heat medium circuit (36) formed between the heat exchangers (31, 32);
A heat medium circulation means (33) provided in the heat medium circulation path (36) for circulating the heat medium;
Blowing means (34) is provided for blowing air into the passenger compartment (C) by circulating air through the passenger compartment heat exchanger (32) and exchanging heat with the heat medium. In-vehicle air conditioner.   The refrigerant compressor (5A, 5B) of the refrigeration cycle (R) that cools and heats the thermostat (100) is an electric motor (rotated by power supplied from the vehicle engine (EG) or the ground power supply (E)). The in-vehicle air conditioner according to claim 1, which is driven by any one of 4).   The in-vehicle air conditioner according to claim 1, further comprising a heat storage means (20) for exchanging heat with the vehicle interior heat exchanger (32). A cooling water inflow path (46) for allowing cooling water of the vehicle engine (EG) to flow into one of the heat medium circulation paths (36) connecting the heat exchangers (31, 32);
Inflow side flow path switching means (47) provided at a connection portion between the heat medium circulation path (36) and the cooling water inflow path (46);
A cooling water outflow passage (48) through which cooling water flows out from the other of the heat medium circulation passage (36) connecting the heat exchangers (31, 32) to the vehicle engine (EG);
The outflow side flow path switching means (49) provided at the connecting portion between the heat medium circulation path (36) and the cooling water outflow path (48) is provided. The in-vehicle air conditioner according to claim 1. A cooling water inflow path (46) for allowing cooling water of the vehicle engine (EG) to flow into one of the heat medium circulation paths (36) connecting the heat exchangers (31, 32);
An inflow side channel interrupting means (50) provided in the cooling water inflow channel (46);
A cooling water outflow passage (48) through which cooling water flows out from the other of the heat medium circulation passage (36) connecting the heat exchangers (31, 32) to the vehicle engine (EG);
The in-vehicle air conditioner according to any one of claims 1 to 3, further comprising an outflow-side passage intermittent means (51) provided in the cooling water outflow passage (48).   The in-vehicle air conditioner according to any one of claims 5 and 6, wherein engine cooling water is used as the heat medium.

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