JPH10315750A - Heat storage type air conditioner of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively perform warming and cooling within a compartment also when an engine is stopped by performing heat storage for warming heat and cooling heat as sensible heat in a coolant circuit such as an evaporator of a cooling equipment and a sensible heat heat storage device when an engine is operated. SOLUTION: When a compartment temperature is raised and reaches a set temperature in a warming heat heat storage operation mode, a first coolant circuit 2 is made a closed state, second and third coolant circuits 5, 23 are made opened states and coolant is heated by an engine 11 in operation. Coolant within a latent heat heat storage device 7, coolant circuits 2, 5 and a sensible heat heat storage device 8 is raised up to an engine stable water temperature. A part of this coolant is passed through an evaporator 27 and a sensible heat heat storage device 8 in the second coolant circuit 5 is made to perform heat storage as warming heat. Further, a part of coolant is passed through the latent heat heat storage device 7 in the second coolant circuit 5 and heat storage is performed as warming heat on a latent heat heat storage material 7 B for warming. Subsequently, thermal energy which is stored at each place is radiated and warming is made to be performed when the engine 11 is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerative air-conditioning system for a vehicle which stores warm and cold heat by operating an engine and cools and heats a vehicle compartment when the engine is stopped.

[0002]

2. Description of the Related Art In general, in a vehicle such as an automobile, an air conditioner for a vehicle is composed of a heating device that uses the heat of a coolant for cooling an engine and a cooling device that uses a refrigeration cycle. Have been. As such air conditioners for vehicles, for example, those shown in FIGS. 10, 11 and 12 are known.

[0003] In FIG.
1 and the cooling device 10 shown in FIG.
3 is provided. Heat exchanger 1 for heating of heating device 102
02A, an air blowing device 105 via a duct 104
Is connected. The air blowing device 105 includes a casing 106 and a blower 10 installed in the casing 106.
7 and the casing 106 has blow-off ports 106A, 1
06B and 106C are provided. Casing 106
The cooling heat exchanger 103A of the cooling device 103 is disposed therein.

[0004] As shown in FIG. 11, a heating device 102 is configured by disposing a heating heat exchanger 102 A in the middle of a coolant circuit 109 circulating an engine 108. In the heating mode, in the heating heat exchanger 102A, the taken-in air exchanges heat with the heat of the coolant of the engine 108 to increase the temperature, and the heated air is supplied to the vehicle interior. FIG.
As shown in (1), the cooling device 103 is configured such that an evaporator 110A, a compressor 110B, a condenser 110C, a liquid receiver 110D, and an expansion valve 110E are interposed on a refrigerant circulation pipe 111. In the cooling mode, the air passing through the cooling heat exchanger 103A is cooled by the heat of vaporization of the evaporator 110A, and the cooled air is supplied into the vehicle interior.

[0005]

In the vehicle air conditioner 101 described above, the engine 108 is operated and the engine 108 is operated.
In addition, the interior of the vehicle is heated using the heat of the vehicle, and the interior of the vehicle is cooled using the refrigeration cycle of the cooling device 103.

However, since the exhaust gas is emitted by the operation of the engine 108, the operation of the engine 108 is not preferable from the viewpoint of low pollution to prevent air pollution. That is, it is required to stop the engine of the parked vehicle, for example,
In some cases, idling in parking lots is prohibited.

Further, from the viewpoint of energy saving, it is not preferable to operate the engine 108 to cool and heat the vehicle interior. Stopping the operation of the engine 108 and stopping the air conditioning in summer and winter in accordance with such a demand is contrary to the usability of the vehicle, in which the driver and the occupant often take a break or take a nap while riding the vehicle. The comfort for hands and occupants is significantly impaired, which is not preferable.

Therefore, there is a need for a regenerative air conditioner that stores hot and cold heat during operation of the engine and releases heat or cold when the engine is stopped. But the heat,
A regenerative air conditioner that dissipates cold heat is not disclosed, and a vehicle heating device (for example, a real heating system) that stores high-temperature hot water in a heat storage device during operation of an engine and uses high-temperature water for heating when the engine is stopped. 6-328929). Since the vehicle heating device does not store cold heat, it cannot cool the vehicle compartment when the engine is stopped.

In short, it is not possible to heat or cool the vehicle compartment by storing heat or cold heat while the engine is running, and dissipating the stored cold or warm heat when the engine of the vehicle is stopped. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to store heat and cold heat by operating an engine, and to radiate the heat and cold heat stored when the engine is stopped. An object of the present invention is to provide a regenerative air conditioner for a vehicle that can cool and heat a room.

[0010]

According to the first aspect of the present invention,
A first coolant circuit that is connected to the engine and circulates coolant by an engine water pump; a heat exchanger that is interposed in the first coolant circuit and heats or cools air guided from the vehicle interior; An air blower for supplying air sent from the heat exchanger into the vehicle interior by a blower, a second coolant circuit connected to the engine for circulating coolant, a middle portion of the first coolant circuit, and a second cooling device A switching circuit for connecting a middle part of the liquid circuit, and a first circuit interposed in the middle of the switching circuit.
A switching valve, a second switching valve interposed in the first coolant circuit, for flowing or shutting off the coolant between the first coolant circuit and the engine, and a second switching valve interposed in the second coolant circuit, A third switching valve for flowing or shutting off a coolant between the second coolant circuit and the engine; and a third switching valve interposed in the second coolant circuit,
A sensible heat storage device accommodating an evaporator and a second coolant circuit interposed, and driven by a battery power supply to supply coolant to the first coolant circuit, the second coolant circuit, and the switching circuit. It is characterized by comprising a centrifugal electric pump, and a cooling device having an evaporator provided in the middle of the second coolant circuit and a compressor driven by a vehicle engine.

According to a second aspect of the present invention, in the heat storage type air conditioner for a vehicle according to the first aspect, a third coolant circuit is connected in parallel with the second coolant circuit, and
A latent heat storage device containing a latent heat storage material for cooling is interposed, and a third coolant circuit and a second coolant circuit in a third coolant circuit are provided.
A fourth switching valve is interposed between the piping connection of the coolant circuit and the latent heat storage device.

According to a third aspect of the present invention, in the heat storage air conditioner of the vehicle according to the second aspect, the latent heat storage device contains a latent heat storage material for heating. According to a fourth aspect of the present invention, in the thermal storage type air conditioner for a vehicle according to the first aspect, a latent heat storage device including a cooling latent heat storage material in series with the sensible heat storage device in the second coolant circuit. The intermediate switching valve is interposed between the sensible heat storage device and the latent heat storage device in the third coolant circuit, and the second coolant circuit includes
A bypass path is provided in parallel with the latent heat storage device, and a bypass valve is interposed in the bypass path.

According to a fifth aspect of the present invention, in the thermal storage type air conditioner of the vehicle according to the fourth aspect, the latent heat storage device contains a latent heat storage material for heating. According to a sixth aspect of the present invention, in the regenerative air conditioner for a vehicle according to any one of the first to fifth aspects, a dry circuit that bypasses the evaporator is connected to the cooling device, and the dry circuit is provided in the middle of the dry circuit. A dry evaporator is provided, and the dry evaporator and the heat exchanger are housed in a cooling and heating unit through which air passes.

According to a seventh aspect of the present invention, there is provided a regenerative air conditioner for a vehicle according to any one of the first to sixth aspects,
The power input unit of the centrifugal electric pump is connected to a battery of the vehicle.

(Function) In the first aspect of the present invention,
The regenerative air conditioner of the vehicle is operated in the following modes.

(A-1) Heating operation mode (A-2) Thermal heat storage operation mode (A-3) Heat radiation operation mode with the engine stopped (heating) (B-1) Cooling operation mode (B-2) Cold heat storage operation mode (B-3) Cool heat radiation operation mode (cooling) when engine is stopped The following describes each mode.

(A-1) Heating operation mode When the temperature of the coolant is equal to or lower than the set temperature, the first switching valve is closed, the second switching valve is opened, and the third switching valve is closed. I have. The first coolant circuit is open, the second coolant circuit is closed, and the cooling device is stopped. The blower of the air blowing device is operating.

The engine is operated, and the coolant is circulated through the engine and the first coolant circuit by the engine water pump. The coolant is warmed by the heat of the engine and exchanges heat with the drawn air in the heat exchanger to give heat to the air. The air whose temperature has risen is sent from the heat exchanger to the air blowing device, and further supplied to the vehicle interior by the blower of the air blowing device, thereby heating the vehicle interior.

(A-2) Thermal storage operation mode When the temperature of the coolant becomes equal to or higher than the set temperature, the first switching valve is closed, the second switching valve is closed, and the third switching valve is open. . The cooling device is in a stopped state. As a result, the first coolant circuit is closed and the second coolant circuit is open.

The engine is operated and the coolant is warmed by the engine. The coolant circulates through the engine and the second coolant circuit by the engine water pump, but does not pass through the heat exchanger. Heat exchange with the coolant is not performed in the heat exchanger with the sucked air. When the coolant passes through the evaporator, the heat of the coolant is stored in the sensible heat storage device in the middle of the second coolant circuit.

(A-3) Heat release operation mode with the engine stopped (heating) The engine is stopped, the first switching valve is opened, the second switching valve is closed, and the third switching valve is closed. It has become. The cooling device is in a stopped state. Therefore, the first coolant circuit and the second coolant circuit are disconnected from the engine, and the first coolant circuit and the second coolant circuit are in communication.

The coolant does not pass through the engine but is circulated through the heat exchanger of the first coolant circuit and the second coolant circuit by the centrifugal electric pump. Heat is transferred from the sensible heat storage device to the heat exchanger via the coolant, and the sucked air exchanges heat with the coolant in the heat exchanger. (B-1) Cooling operation mode The engine is operated, the first switching valve is open, the second switching valve is closed, and the third switching valve is closed. Further, the fourth switching valve is in a closed state. The cooling device is operating.

As a result, the first coolant circuit and the second coolant circuit are disconnected from the engine, and the first coolant circuit and the second coolant circuit are in communication. In this state, the coolant does not pass through the engine and is circulated through the first coolant circuit and the second coolant circuit by the centrifugal electric pump. In the evaporator of the cooling device, the coolant is cooled, and the coolant is transferred to the heat exchanger of the first coolant circuit.

The air sucked in the heat exchanger is exchanged with a coolant and cooled. The cooled air is sent from the heat exchanger to the air blowing device, and further supplied to the vehicle interior by the blower of the air blowing device, thereby cooling the vehicle interior. (B-2) Cold energy storage operation mode The engine is operated, the first switching valve is open, the second switching valve is closed, and the third switching valve is closed.

The first coolant circuit and the second coolant circuit are disconnected from the engine, the first coolant circuit and the second coolant circuit are in communication, and the cooling device is in operation. ing. The coolant does not pass through the engine and is circulated through the heat exchanger of the first coolant circuit and the second coolant circuit by the centrifugal electric pump.

In the evaporator of the cooling device, the coolant is cooled, and the coolant is transferred to the heat exchanger of the first coolant circuit. In the heat exchanger, the coolant exchanges heat with the sucked air, and the air is cooled. The cooled air is sent from the heat exchanger to the air blowing device, and further supplied to the vehicle interior by the blower of the air blowing device, thereby cooling the vehicle interior.

At the same time, the cold heat of the coolant is stored on the sensible heat storage device in the middle of the second coolant circuit. (B-3) Cooling heat radiation operation mode (cooling) when the engine is stopped The engine is stopped, the first switching valve is opened, the second switching valve is closed, and the third switching valve is closed. I have. First
The coolant circuit and the second coolant circuit are disconnected from the engine, the first coolant circuit and the second coolant circuit are in communication with each other, and the cooling device is stopped.

The coolant does not pass through the engine and is circulated through the heat exchanger of the first coolant circuit and the second coolant circuit by the centrifugal electric pump. When the coolant flows through the sensible heat storage device in the middle of the second coolant circuit to the heat exchanger of the first coolant circuit, the cold heat stored on the sensible heat storage device passes through the coolant to the second heat source. 1 Conveyed to the heat exchanger of the coolant circuit.

In the heat exchanger, the coolant and the sucked air exchange heat, and the air is cooled. The cooled air is sent from the heat exchanger to the air blowing device, and further supplied to the vehicle interior by the blower of the air blowing device, thereby cooling the vehicle interior. According to the second aspect of the invention, (B-2) the cold heat storage operation mode according to the first aspect of the invention,
-3) In the cold heat radiation operation mode (heating) with the engine stopped, the fourth switching valve is opened, and the coolant flows through the latent heat storage device.

(B-2) In the cold heat storage operation mode, when the coolant passes through the latent heat storage device, the coolant is stored as cold heat in the cooling latent heat storage material of the latent heat storage device. Also, (B-
3) Cooling heat radiation operation mode with the engine stopped (cooling)
In the above, when the coolant passes through the latent heat storage device, the cooling latent heat storage material of the latent heat storage device undergoes a phase change to dissipate cold heat, and the coolant is given cold heat.

On the other hand, in the cooling operation mode (B-1), the fourth switching valve is closed, so that the coolant does not flow through the latent heat storage device. In the third aspect of the invention, the fourth switching valve is in the open state in (A-2) the thermal storage operation mode and (A-3) the thermal radiation operation mode with the engine stopped in the invention of the first aspect. And the coolant flows through the latent heat storage device.

(A-2) In the thermal storage operation mode, when the coolant passes through the latent heat storage device, the heating latent heat storage material of the latent heat storage device changes phase, and the coolant is stored in the heating latent heat storage material as heat. Heat is stored. Further, in the (A-3) heat radiation mode of operation (heating) with the engine stopped, when the coolant passes through the latent heat storage device, the heating latent heat storage material of the latent heat storage device undergoes a phase change to radiate heat, Heat is applied to the cooling liquid.

According to the fourth aspect of the present invention, there is provided the second aspect.
The same operation as the described invention occurs. According to the fifth aspect of the invention, the same effect as the third aspect of the invention is produced. In the invention described in claim 6, the first switching valve is in a closed state, the second switching valve is in an open state, and the third switching valve is in a closed state. The first coolant circuit is open, the second coolant circuit is closed, and the cooling device is operating.

The engine is operated, and the coolant warmed by the engine is supplied to the engine by a water pump of the engine.
The engine circulates through the first coolant circuit. On the other hand, by the operation of the cooling device, the air is cooled via the evaporator of the drying circuit. Therefore, the air is cooled and warmed at the same time, and the dry operation is performed. The dehumidified air is supplied into the vehicle interior by a blower of an air blowing device.

In the invention according to claim 7, a battery is used as a power source of the pump.

[0036]

Embodiments of the present invention will be described below with reference to the drawings.

A heat storage type air conditioner for a vehicle according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8. In FIG. 1, reference numeral 1 indicates a heat storage type air conditioner 1 for a vehicle according to the present embodiment. The regenerative air conditioner 1 for a vehicle according to the present embodiment includes a first coolant circuit 2, a heat exchanger 3, an air blowing device 4, a second coolant circuit 5, a centrifugal electric pump 6, A latent heat storage device 7, a sensible heat storage device 8, a cooling device 9, and a drying circuit 10 are provided. Here, in the regenerative air conditioner 1, for example, a cooling fluid having a large specific heat by mixing an antifreeze containing ethylene glycol as a main component is used as a brine. The freezing temperature of the antifreeze can be set to minus 40 ° C.

The details will be described below. Reference numeral 11 denotes an engine, and a water jacket 1 is provided inside the engine 11.
2 are provided. Exit 1 of water jacket 12
2A, the first coolant circuit 2 is connected to the inlet of the engine water pump 12B. That is, the first coolant circuit 2 is connected to the engine 11 and is indicated by a two-dot chain line 2A. The coolant is circulated through the first coolant circuit and the engine 11 by the engine water pump 12B.

The second coolant circuit 5 is indicated by a two-dot chain line 5A, and is connected to the engine 11. Here, the first coolant circuit 2 and the second coolant circuit 5 are connected by piping connections 2B and 2C, and the first coolant circuit 2 and the second coolant circuit 5 are connected by piping in the first coolant circuit 2. Portions 2D from the connecting portion 2B to the inlet of the engine water pump 12B of the water jacket 12 and portions 2E from the pipe connecting portion 2B in the first coolant circuit 2 to the outlet 12A of the water jacket 12 form a common pipe.

An intermediate portion of the first coolant circuit 2 and an intermediate portion of the second coolant circuit 5 are connected via a switching circuit 13, and a first switching valve 14 comprising an electromagnetic valve is interposed in the switching circuit 13. Have been.

Further, in the middle of the first cooling liquid circuit 2, a second switching valve 15 composed of an electromagnetic valve and the heat exchanger 3 are provided in this order. The heat exchanger 3 is accommodated in a cooling and heating unit 16, and a drying evaporator 17 is arranged in the cooling and heating unit 16 so as to face the heat exchanger 3. Air conditioning unit 1
Reference numeral 6 denotes an air passage, to which the air blowing device 4 is connected via a duct 18.

The air blowing device 4 includes a casing 19,
And a blower 20 installed in the casing 19, and the casing 19 is provided with outlets 19A, 19B, and 19C. A third switching valve 21 composed of an electromagnetic valve is interposed in a portion 5C of the second cooling fluid circuit 5 between the piping connection portion 2B of the first cooling fluid circuit 2 and the piping connection portion 5B of the switching circuit 13. .

In the middle of the second coolant circuit 5, the centrifugal electric pump 6, the fifth switching valve 24 comprising an electromagnetic valve, and the sensible heat storage device 8 are connected to the pipe of the first coolant circuit 2 from the pipe connection portion 5B. It is interposed in order toward the connection part 2C. The third coolant circuit 23 is connected in parallel to the pipe connection portions 5D and 5E of the second coolant circuit 5. A fourth switching valve 22 composed of an electromagnetic valve and the latent heat storage device 7 are interposed in the middle of the third coolant circuit 23 from the pipe connection part 5D to the pipe connection part 5E. The fourth switching valve 22 is located between the pipe connection portion 5D of the second coolant circuit 5 and the latent heat storage device 7 in the third coolant circuit 23, and performs a cooling operation (B-1) described later.
Enable.

The latent heat storage device 7 includes a heat insulating casing 7A.
And a latent heat storage material for heating 7B and a latent heat storage material for cooling 7C housed in a heat insulating casing 7A. As the latent heat storage material for heating 7B, an engine stable water temperature vicinity (8 degrees Celsius)
(5 to 90 degrees) is used. For example, a wax, an organic heat carrier, a molten salt and the like can be mentioned.

As the cooling latent heat storage material 7C, a material that causes a phase change at a set temperature (5 to 10 degrees Celsius) is used. For example, various inorganic hydrate salts and organic substances such as paraffin can be mentioned. In the case of C ₁₄ ~C ₁₆ paraffin,
The melting point is 2 to 7 degrees Celsius. The centrifugal electric pump 6 is a pump driven by a battery power supply (not shown) as an energy source generated by rotation of the engine 11, and includes a first coolant circuit 2, a second coolant circuit 5, and a third coolant circuit 23. , The cooling liquid can be supplied to the switching circuit 13.

The pipe connection 5B of the second coolant circuit 5
The first coolant circuit 2 from the portion between the
A fourth coolant circuit 25 is interposed between the heat exchanger 3 and the pipe connection portion 2C. Fourth coolant circuit 2
In the middle of 5, a sixth switching valve 26 is interposed. The cooling device 9 includes an evaporator 27, a compressor 28, a condenser 29, a liquid receiver 30, a seventh switching valve 31 including an electromagnetic valve, and an expansion valve housed in the sensible heat storage device 8. 32 is disposed on the refrigerant circulation line 33.

The sensible heat storage device 8 contains a cooling liquid in a heat insulating container, and contains an evaporator 27. The compressor 28 is provided with a compressor driving clutch 28A which is connected to the rotating shaft of the engine 11 so as to be able to be connected and disconnected, and the rotation of the engine 11 is connected to and disconnected from the compressor 28 via the compressor driving clutch 28A. It has become.

The sensible heat storage device 8 in the refrigerant circulation line 33
33A between the compressor and the compressor 28, the receiver 30 and the seventh
The dry circuit 10 is connected to a portion between the portions 33B between the switching valves 31. In the middle of the drying circuit 10, an eighth switching valve 34 composed of a solenoid valve and an expansion valve 3 are provided.
5. The evaporator 17 for drying is interposed in order.

Next, the operation of the present embodiment will be described. In the regenerative air conditioner 1 of the vehicle, the operating state or the stopped state of each of the compressor 28, the centrifugal electric pump 6, and the blower 20, the first switching valve 14, the second switching valve 15, and the third switching valve 21 are described. The opening and closing of the fourth switching valve 22, the fifth switching valve 24, the sixth switching valve 26, the seventh switching valve 31, and the eighth switching valve 34 are selected based on the switch operation and the temperature in the vehicle interior.

The next mode corresponding to the state of each device described above is selected, and Table 1 shows the correspondence between each device and the operation mode. (A-1) Heating operation mode, (A-2) Heat storage operation mode, (A-3) Heat release operation mode (heating) with engine stopped, (A-4) Heating stop mode, (B-1) )
Cooling operation mode, (B-2) Cool heat storage operation mode, (B
-3) Cooling heat radiation operation mode (cooling) with the engine stopped, (B-4) cooling stop mode, (C-1) dry operation mode, (C-2) dry operation stop mode

[Table 1] Note that a coolant having a large specific heat is preferable as the brine,
As described above, for example, a coolant mixed with an antifreeze containing ethylene glycol as a main component is used in the heat storage type air conditioner 1 of the vehicle.

Hereinafter, each mode will be described. (A-1) Heating operation mode The heating operation mode is selected at the start of heating by operating a switch, and each device is in the state shown in Table 1. That is, when the temperature in the passenger compartment is equal to or lower than the set temperature, the first switching valve 14 is closed.
The second switching valve 15 is in an open state, the third switching valve 21 is in a closed state, and the cooling device 9 is in a stopped state. Thereby, as shown by the thick black line in FIG. 2, the first coolant circuit 2 is in the open state, and the second coolant circuit 5 is in the closed state.

The engine 11 is operated, and the coolant is supplied to the engine 1 by a water pump (not shown) of the engine 11.
1, circulate through the first coolant circuit 2. Coolant is engine 1
The air is heated by the heat of the heat exchanger 1 and exchanges heat with the air sucked from the vehicle compartment (not shown) in the heat exchanger 3 to give heat to the air. The temperature-raised air is sent from the heat exchanger 3 to the air blowing device 4 and further supplied to the vehicle interior by the blower 20 of the air blowing device 4 to heat the vehicle interior.

(A-2) Thermal storage operation mode When the temperature in the passenger compartment rises and reaches the set temperature, each device enters the state shown in Table 1. That is, the first switching valve 14 is closed, the second switching valve 15 is closed, and the third switching valve 21 is open. The fourth switching valve 22 and the fifth switching valve 24 are opened. The cooling device 9 is in a stopped state.

Thus, as shown by the thick black line in FIG. 3, the first coolant circuit 2 is closed and the second coolant circuit 5 is closed.
Is in the open state, and the third coolant circuit 23 is in the open state. The engine 11 is operated, and the coolant is supplied to the engine 11.
Is warmed up and the temperature rises. By operating the engine 11 for a long time, the coolant inside the latent heat storage device 7, the first coolant circuit 2, the second coolant circuit 5, and the sensible heat storage device 8 indicated by the thick black line in FIG. , The engine temperature rises to stable water temperature.

The coolant circulates through the engine 11 and the second coolant circuit 5 by a water pump (not shown) of the engine 11, but does not pass through the heat exchanger 3. Heat exchange with the coolant is not performed in the heat exchanger 3 with respect to the air sucked into the vehicle interior. Part of the cooling liquid passes through the evaporator 27.
When the coolant passes through the evaporator 27, the coolant is stored as heat in the sensible heat storage device 8 in the middle of the second coolant circuit 5.

A part of the coolant is stored as warm heat on the heating latent heat storage material 7B of the latent heat storage device 7 in the middle of the second coolant circuit 5. Heat for heating is supplied to the cooling device 9.
Is stored in the cooling liquid of the evaporator 27, the first cooling liquid circuit 2, and the second cooling liquid circuit 5.

Note that the coolant flows through the centrifugal electric pump 6 even when the centrifugal electric pump 6 is stopped. In particular, since the centrifugal electric pump 6 is of a centrifugal type, the resistance is small and the coolant can easily flow through the centrifugal electric pump 6. In this way, the coolant rises and reaches the engine stable water temperature. (A-3) Thermal radiation operation mode with the engine stopped (heating) The thermal radiation operation mode with the engine stopped is selected by a switch operation, and each device is in the state shown in Table 1.

The engine 11 is stopped and the first switching valve 14
Is open, the second switching valve 15 is closed, and the third switching valve 2 is closed.
1 is closed. Further, the fourth switching valve 22 and the fifth switching valve 24 are in an open state. The cooling device 9 is in a stopped state. Thereby, as shown by the thick black line in FIG.
The first coolant circuit 2 and the second coolant circuit 5 are disconnected from the engine 11, and the first coolant circuit 2 and the second coolant circuit 5 are in communication.

The coolant does not pass through the engine 11 and is circulated through the heat exchanger 3 and the second coolant circuit 5 of the first coolant circuit 2 by the centrifugal electric pump 6. The cooling liquid passes through the sensible heat storage device 8. When the coolant passes through the sensible heat storage device 8, the coolant flowing through the second coolant circuit 5 in the sensible heat storage device 8 receives heat from the coolant in the hot state of the sensible heat storage device 8, Is transferred to the heat exchanger 3 via the second coolant circuit 5 and the switching circuit 13.

When the coolant passes through the heating latent heat storage material 7B of the latent heat storage device 7, the heating latent heat storage material 7B undergoes a phase change and radiates heat at a constant temperature. The heating latent heat storage material 7B of the latent heat storage device 7 undergoes a phase change, and heat is given to the coolant. The heat is transferred to the heat exchanger 3 by the coolant via the third coolant circuit 23 and the switching circuit 13.

In the heat exchanger 3, heat exchange between the air sucked into the vehicle interior and the coolant is performed. As a result, the temperature of the air rises, and the temperature-raised air is sent from the heat exchanger 3 to the air blowing device 4 and further supplied to the vehicle interior by the blower 20 of the air blowing device 4 to heat the vehicle interior. Adjustment of the temperature of the passenger compartment is performed by turning on and off the blower 20.
FF operation, ON / OFF operation of the centrifugal electric pump 6, and opening / closing operation of the first switching valve 14, the fourth switching valve 22, and the fifth switching valve 24 are performed.

(A-4) Heating stop mode The heating stop mode is selected by the switch operation or the heating set temperature, and the equipment is in the state shown in Table 1, and (A-3)
Thermal radiation in the thermal radiation operation mode (heating) with the engine stopped is stopped, and heating of the vehicle interior is stopped. (B-1) Cooling operation mode The cooling operation mode is selected at the start of cooling by operating the switch, and each device is in the state shown in Table 1.

That is, when the temperature in the passenger compartment is equal to or higher than the set temperature, the engine 11 is operated, the first switching valve 14 is opened, the second switching valve 15 is closed, and the third switching valve 21 is closed. It is in a state. Further, the fourth switching valve 22 is closed.
The fifth switching valve 24 is open. The compressor driving clutch 28A is turned on, the compressor 28 is driven, and the cooling device 9 is in an operating state. As a result, a well-known refrigeration cycle is performed, and in the evaporator 27, the coolant flowing through the second coolant circuit 5 is cooled by the heat of vaporization. In the condenser 29 of the cooling device 9, heat is radiated to the outdoor air by a blower fan (not shown), and the refrigerant circulation pipe 3
The refrigerant circulating in 3 is liquefied.

As shown by the thick black line in FIG. 5, the first coolant circuit 2 and the second coolant circuit 5 are cut off from the engine 11, and the first coolant circuit 2 and the second coolant circuit 2 The liquid circuit 5 is in a communication state. In such a state, the coolant does not pass through the engine 11 and is driven by the centrifugal electric pump 6.
The portion of the first coolant circuit 2 indicated by the thick black line in FIG. 5 and the second coolant circuit 5 circulate.

In the evaporator 27 of the cooling device 9, heat is exchanged, and the cooling liquid is cooled by the evaporator 27 of the blower 9 of the cooling device. This coolant is carried to the heat exchanger 3 of the first coolant circuit 2. In the heat exchanger 3, the coolant exchanges heat with the air sucked from the vehicle compartment, and the air is cooled.
The cooled air is sent from the heat exchanger 3 to the air blowing device 4 and further supplied to the vehicle interior by the blower 20 of the air blowing device 4 to cool the vehicle interior.

The above operation is performed until the temperature of the passenger compartment falls to the set temperature. (B-2) Cold heat storage operation mode (B-1) When the temperature of the vehicle compartment becomes lower than the set temperature in the cooling operation mode, the cold heat storage operation mode is selected.
In this cold heat storage operation mode, the compressor driving clutch 2
8A is turned on, the compressor 28 is driven, and the cooling device 9
Is in operation. Thus, a well-known refrigeration cycle is performed, and the second heat is generated in the evaporator 27 by the heat of vaporization.
The coolant flowing through the coolant circuit 5 is cooled. In the condenser 29 of the cooling device 9, heat is radiated to the outdoor air by a blower fan (not shown), and the refrigerant circulating in the refrigerant circulation line 33 is liquefied.

When the engine 11 is operated and the temperature in the passenger compartment falls below the set temperature in the cooling operation (B-1),
Each device is in the state shown in Table 1. The first switching valve 14 is in an open state, the second switching valve 15 is in a closed state, and the third switching valve 21 is in a closed state. Further, the fourth switching valve 22 and the fifth switching valve 2
4 is open. (B-1) The difference from the state of the cooling operation mode is that the fourth switching valve 22 is opened.

That is, as shown by the thick black line in FIG.
The first coolant circuit 2 and the second coolant circuit 5 are disconnected from the engine 11, and the first coolant circuit 2 and the second coolant circuit 5 are in communication. Further, the second coolant circuit 5 and the third coolant circuit 23 are in communication. In this state, the coolant does not pass through the engine 11 and is circulated by the centrifugal electric pump 6 in the first coolant circuit 2 and the second coolant circuit 5 indicated by thick black lines in FIG.

In the evaporator 27 of the cooling device 9, the coolant is cooled, and the coolant is transferred to the heat exchanger 3 of the first coolant circuit 2. In the heat exchanger 3, heat is exchanged between the coolant and the air sucked into the passenger compartment, and the air is cooled by being given cold heat. The cooled air is sent from the heat exchanger 3 to the air blowing device 4 and further supplied to the vehicle interior by the blower 20 of the air blowing device 4 to cool the vehicle interior.

At the same time, the cooling liquid in the sensible heat storage device 8 is cooled by the heat of vaporization of the evaporator 27, and the cold heat is stored in the sensible heat storage device 8 as sensible heat. Also, the third coolant circuit 2
The cooling liquid passes through the latent heat storage device 7 via the cooling medium 3, whereby the cooling latent heat storage material 7 </ b> C undergoes a phase change, and the cooling heat of the cooling liquid is transferred from the latent heat storage device 7 in the second cooling liquid circuit 5. Heat is stored on the heat storage material 7C. That is, the cooling heat is transferred from the evaporator 27 of the cooling device 9 to the latent heat storage material for cooling 7C of the latent heat storage device 7 by the cooling liquid.

Since the sixth switching valve 26 is open, a part of the coolant in the first coolant circuit 2 that has passed through the centrifugal electric pump 6 is diverted to the latent heat storage device 7, The amount of the coolant flowing to the heat exchanger 3 is reduced to prevent excessive cooling, and the temperature of the cooling in the vehicle compartment is adjusted. (B-3) Cooling / heat dissipating operation mode when engine is stopped (cooling) By operating a switch, the cooling / heat dissipating operation mode when engine is stopped is selected, and each device is in the state shown in Table 1. That is, the engine 11 is stopped, the first switching valve 14 is open, the second switching valve 15 is closed, and the third switching valve 21 is closed. Further, the fourth switching valve 22 and the fifth switching valve 2
4 is open. Since the engine 11 is stopped, the compressor 28 is stopped, and the cooling device 9 is stopped.
Is stopped, and the refrigeration cycle is not performed.

Thus, as shown by the thick black line in FIG. 7, the first coolant circuit 2 and the second coolant circuit 5
1 and the first coolant circuit 2 and the second coolant circuit 5 are in communication with each other. The second coolant circuit 5 and the third coolant circuit 23 are in communication.
In this state, the coolant does not pass through the engine 11 and is circulated through the heat exchanger 3 and the second coolant circuit 5 of the first coolant circuit 2 by the centrifugal electric pump 6.

The cooling liquid passes through the sensible heat storage device 8. When the coolant passes through the sensible heat storage device 8, the coolant flowing through the second coolant circuit 5 in the sensible heat storage device 8 receives cold heat from the coolant in the cold state of the sensible heat storage device 8, Is transferred to the heat exchanger 3 via the second coolant circuit 5 and the switching circuit 13. At the same time, the coolant flows through the heat exchanger 3 of the first coolant circuit 2 through the latent heat storage device 7 in the middle of the second coolant circuit 5, so that the cooling latent heat storage material 7C of the latent heat storage device 7 changes phase. I do. The cold heat stored on the cooling latent heat storage material 7C of the latent heat storage device 7 is transferred to the heat exchanger 3 of the first coolant circuit 2 via the coolant.

In the heat exchanger 3, the cooling liquid exchanges heat with the sucked air, and the air is cooled. The cooled air is sent from the heat exchanger 3 to the air blowing device 4, and further,
The air is supplied from the air blowing device 4 into the vehicle compartment, and the vehicle compartment is cooled. The temperature of the cabin is adjusted by the O
N, OFF operation, ON / OFF operation of the centrifugal electric pump 6, the first switching valve 14, the fourth switching valve 22, the fifth switching valve 24
The opening and closing operation is performed.

(B-4) Cooling stop mode The cooling stop mode is selected by the switch operation or the cooling set temperature, and the equipment is in the state shown in Table 1, and (B-3)
The cooling heat radiation operation mode (cooling) with the engine stopped is stopped.

(C-1) Dry Operation Mode The dry operation mode is selected by operating the switch, and when the temperature in the vehicle interior is higher than the set dry operation temperature, each device is in the state shown in Table 1. In the dry operation mode, the engine 11 is operated, (A-1) the heating operation and the following cooling operation are performed simultaneously, and the air in the vehicle compartment is dried (dehumidified). This will be described below.

(A-1) The heating operation is performed as follows. The first switching valve 14 is in a closed state, the second switching valve 15 is in an open state, and the third switching valve 21 is in a closed state. As a result, as shown by the thick black line in FIG. 8, the first coolant circuit 2 is open and the second coolant circuit 5 is closed. The coolant circulates through the engine 11 and the first coolant circuit 2 by the water pump of the engine 11. The coolant is heated by the heat of the engine 11 and exchanges heat with the air sucked from a vehicle compartment (not shown) in the heat exchanger 3.
Heat is given to the air.

On the other hand, since the seventh switching valve 31 is in the closed state and the eighth switching valve 34 is in the open state, the cooling circuit CH indicated by the thick line in FIG. 8 is formed. The cooling circuit CH includes a dry evaporator 17, a compressor 28, and a condenser 2
9, the liquid receiver 30, the eighth switching valve 34, and the expansion valve 35 are disposed on the drying circuit 10. The engine 11 is operated, the compressor driving clutch 28A is turned on, the compressor 28 is driven, and the cooling circuit CH is in an operating state.
As a result, a known refrigeration cycle is performed, and the drying circuit 1
The cooling liquid flowing through 0 is cooled. The cooled liquid is transferred to the cooling / heating unit 16 to cool the air.

In the cooling / heating unit 16, the cooling circuit C
The air is dried by cooling the air with H and heating the air with the heat exchanger 3. The dried air is sent from the cooling / heating unit 16 to the air blowing device 4 and is supplied from the air blowing device 4 into the vehicle interior to dry the vehicle interior. (C-2) Dry operation stop mode When the temperature in the vehicle interior becomes lower than the dry operation set temperature, the dry operation stop is selected, and the devices are in the state shown in Table 1, and the drying in the vehicle interior is stopped.

According to the above configuration, the following effects can be obtained. First, at the time of engine operation, hot and cold heat can be stored as sensible heat in the second cooling liquid circuit such as the evaporator of the sensible heat storage device 8 and the sensible heat storage device 8. Heating and cooling are possible. As a result, cooling and heating can be performed without operating the engine 11, fuel consumption can be reduced, energy can be saved, and exhaust gas can be prevented from being emitted to prevent air pollution.

Second, since a coolant having a large specific heat is used as the brine, the capacity of the sensible heat storage device 8 is increased, and it is not practical to store cold heat with air, whereas it is not practical to use cold heat. Heat storage becomes possible. Third, the vehicle interior can be heated by storing the waste heat of the engine 11 as warm heat and radiating the stored heat when the engine is stopped, so that the waste heat energy of the engine 11 is not wasted.

Fourth, since a coolant having a large specific heat is used as the brine, heat can be transferred quickly, and the heat storage speed of cold and warm heat can be increased. During the heat dissipation operation, heat is transferred quickly, so that heating and cooling up to the set temperature can be quickly performed at the next heating and cooling. Fifth, since the heat is transferred to the heat exchanger 3 using the cooling liquid, heating can be performed without using the cooling device 9.

Sixth, in a conventional vehicle air conditioner, a heating system employs a system utilizing the heat of an engine, and a cooling system employs a cooling cycle. Since the cooling fluid is used, control can be integrated into one system, so that cold heat storage, hot heat storage, cold heat storage heat radiation, and heat heat storage heat radiation can be performed, and cooling and heating can be performed with one heat exchanger. be able to.

Seventh, since a cooling liquid made of antifreeze is used as a means for transferring cold and warm heat, the heat transfer amount can be increased and the diameter of the pipe can be reduced as compared with the case where air is used. The device can be made compact. Further, since the cooling liquid composed of the antifreeze liquid does not freeze even at 0 degrees Celsius, the sensible heat storage device 8 can store cold heat in the cooling liquid having a temperature of 0 degrees Celsius or less to increase the heat storage capacity.

Eighth, it is possible to store cold heat as latent heat in the latent heat storage material 7C for cooling of the latent heat storage device 7. Also,
Since a coolant having a large specific heat is used as the brine, it is not practical to store cold heat with air, but it is possible to store cold heat, and the capacity of the latent heat storage device 7 can be increased.

Further, in order to install the latent heat storage device 7 in one place of the vehicle, there is a limitation in space and the capacity is limited. However, the latent heat storage device 7 and the sensible heat storage device 8 are divided. The latent heat storage device 7 and the sensible heat storage device 8 can be made compact. The latent heat storage device 7 can be used as a backup device for the sensible heat storage device 8.

Ninth, since the heat storage means includes the latent heat storage device 7 and the sensible heat storage device 8, the heat storage capacity can be increased.
In the next heating and cooling, the heating start and the cooling start up to the set temperature can be accelerated. Tenth, a drying circuit 10 that bypasses the evaporator 27 is connected to the cooling device 9,
Since the drying evaporator 17 is arranged in the cooling / heating unit 16 together with the heat exchanger 3 in the middle of the drying circuit 10, the cooling / heating unit 16 cools the air by the cooling circuit HC shown in FIG. The air is dried by the heating of the air by the air, thereby enabling a dry operation.

Eleventh, since the power input section of the centrifugal electric pump 6 is connected to the battery of the vehicle, a battery can be used as a power source of the centrifugal electric pump 6, and a new general commercial AC power supply can be used. There is no need for it, and it is excellent in mobility. In the present embodiment, the heat storage air conditioner of the vehicle includes a latent heat storage device and a sensible heat storage device. However, the latent heat storage device is deleted by increasing the capacity of the sensible heat storage device. Heat storage and heat radiation can be performed only with the sensible heat storage device. In this case, a regenerative air conditioner for a vehicle according to the embodiments of the first, sixth, and seventh aspects of the invention is configured.

Further, since the heat for heating can be stored in the evaporator of the cooling device, the sensible heat storage device, and the cooling liquid of the first cooling liquid circuit and the second cooling liquid circuit, the latent heat storage device is used for cooling. It may be configured to house only the latent heat storage material. In this case, a regenerative air conditioner for a vehicle according to the first, second, sixth, and seventh embodiments of the invention is configured.

Referring to FIG. 9, a description will be given of a regenerative air conditioner for a vehicle according to an embodiment of the present invention. The regenerative air conditioner for a vehicle according to the present embodiment is basically the same as the regenerative air conditioner for a vehicle according to the first to third, third, sixth, and seventh embodiments of the invention. Configuration. In the heat storage type air conditioner of the vehicle according to the first to third, third, sixth, and seventh aspects of the invention, the latent heat storage device 7 and the sensible heat storage device 8 are in a parallel relationship. But,
In the present embodiment, the latent heat storage device and the sensible heat storage device are in a serial relationship.

This embodiment will be described only with respect to parts different from the regenerative air conditioner of the vehicle according to the first to third, third, sixth, and seventh embodiments of the present invention. The same components as those of the regenerative air conditioner of the vehicle according to the first to third, third, sixth, and seventh aspects of the invention will be denoted by the same reference numerals and will be described. Omitted.

In the drawing, reference numeral 51 denotes a regenerative air conditioner for a vehicle according to the present embodiment. In the second coolant circuit 5 of the regenerative air conditioner 51, a latent heat accumulator 52 is connected in series with the sensible heat accumulator 8. Is interposed. An intermediate switching valve 53 composed of an electromagnetic valve is interposed between the latent heat storage device 52 and the sensible heat storage device 8 in the third coolant circuit.

The latent heat storage device 52 includes a heat insulating casing 52.
A, and a heating latent heat storage material 52B and a cooling latent heat storage material 52C accommodated in a heat insulating casing 52A. As the heating latent heat storage material 52B, a material that causes a phase change near the engine stable water temperature (85 to 90 degrees Celsius) is used. For example, a wax, an organic heat carrier, a molten salt and the like can be mentioned.

As the cooling latent heat storage material 52C, one that causes a phase change at a set temperature (5 to 10 degrees Celsius) is used. For example, various inorganic hydrate salts and organic substances such as paraffin can be mentioned. In the case of C ₁₄ ~C ₁₆ paraffin,
The melting point is 2 to 7 degrees Celsius. The second coolant circuit 5 includes a bypass path 5 in parallel with the latent heat storage device 52.
4 is provided, and a bypass valve 55 including an electromagnetic valve is interposed in the middle of the bypass path 54. Intermediate switching valve 53
Is in an open state, the bypass valve 55 is in a closed state, and when the intermediate switching valve 53 is in a closed state, the bypass valve 55 is in an open state. The intermediate switching valve 53 is closed only during the cooling operation.

According to the present embodiment, the same operation and effect as those of the heat storage type air conditioner of the vehicle according to the first to third, third, sixth, and seventh aspects of the present invention are obtained. In addition, since the heat for heating can be stored in the evaporator of the cooling device, the sensible heat storage device, and the cooling liquid of the first cooling liquid circuit and the second cooling liquid circuit, the latent heat storage device is replaced with a latent heat storage material for cooling. It can also be configured to accommodate only the in this case,
A regenerative air conditioner for a vehicle according to an embodiment of the present invention is constructed.

[0096]

According to the first aspect of the present invention, the following effects can be obtained. First, when the engine is running, the heat and cold heat can be stored as sensible heat in the second cooling liquid circuit such as the evaporator of the cooling device and the sensible heat storage device. it can.

As a result, cooling and heating can be performed without operating the engine, energy consumption can be reduced by reducing fuel consumption, and emission of exhaust gas can be prevented to prevent air pollution. Second, since a coolant having a large specific heat is used as the brine, the capacity of the sensible heat storage device can be increased, and it is not practical to store cold heat with air, but it is possible to store cold heat. Become.

Third, the vehicle interior can be heated by storing the waste heat of the engine as warm heat and radiating the stored heat when the engine is stopped, so that the waste heat energy of the engine is not wasted. Fourth, since a coolant having a large specific heat is used as the brine, heat can be transferred faster than air, and the heat storage speed of cold and warm heat can be increased. Alternatively, the heat transfer is fast during the cooling heat radiation operation, so that the next time heating or cooling is performed, heating start-up and cooling start-up to the set temperature can be performed quickly.

Fifth, since heat is transferred to the heat exchanger using the cooling liquid, heating can be performed without using a cooling device. Sixth, in a conventional vehicle air conditioner,
The heating system adopts the system that uses the heat of the cooling water of the engine, and the cooling system adopts the cooling cycle system. In contrast to the two systems, the cooling system uses one system because the cooling liquid is used. And therefore,
Cold heat storage, hot heat storage, cold heat storage and heat dissipation, and heat heat storage and heat dissipation are possible, and cooling and heating can be completed with one heat exchanger.

Eighth, since a cooling liquid made of antifreeze is used as a means for transferring cold and warm heat, the heat transfer amount can be increased and the diameter of the pipe can be reduced as compared with the case where air is used. The device can be made compact. In addition, since the cooling liquid made of the antifreeze liquid does not freeze even at 0 degrees Celsius, the sensible heat storage device can store cold heat in the cooling liquid at 0 degrees Celsius or less to increase the heat storage capacity.

According to the second aspect of the present invention, it is possible to store cold heat as latent heat in the cooling latent heat storage material of the latent heat storage device. In addition, since a coolant having a large specific heat is used as the brine, it is not practical to store cold heat with air, but it becomes possible to store cold heat, and the capacity of the latent heat storage device can be increased. .

Further, in order to install the latent heat storage device in one place in a vehicle, there is a space limitation due to the layout of the vehicle, and therefore the capacity is limited. By dividing into a latent heat storage device and a sensible heat storage device, the capacity can be increased, and the sensible heat storage device and the latent heat storage device can each be made compact. The latent heat storage device can be used as a sensible heat storage device as a backup device.

According to the third aspect of the present invention, since the heat storage means includes the latent heat storage device and the sensible heat storage device, the heat storage capacity can be increased, and the heating to the set temperature is performed at the next heating and cooling. Start-up and cooling start-up can be performed quickly. According to the fourth aspect of the invention, the same effect as the second aspect of the invention can be obtained. According to the fifth aspect of the invention, the same effects as those of the third aspect of the invention can be obtained.

According to the sixth aspect of the present invention, since heating and cooling can be simultaneously performed on air, a dry operation can be performed and air can be dehumidified. According to the seventh aspect of the present invention, the power input portion of the centrifugal electric pump is connected to the battery of the vehicle, so that the battery can be used as a power source of the centrifugal electric pump, and the general commercial AC power supply is not used. It is easy to move and has excellent mobility.

[Brief description of the drawings]

FIG. 1 is a block diagram of a first embodiment of the present invention;
BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the heat storage type air conditioner of the vehicle which concerns on embodiment of the described invention.

FIG. 2 is an explanatory diagram of an operation state of the regenerative air conditioner during a heating operation.

FIG. 3 is an explanatory diagram showing an operation state of the thermal storage type air conditioner during a thermal storage operation.

FIG. 4 is an explanatory diagram showing an operation state of the regenerative air conditioner during a heat radiation operation in an engine stopped state.

FIG. 5 is an explanatory diagram showing an operation state of the regenerative air conditioner during a cooling operation.

FIG. 6 is an explanatory diagram of an operation state of the heat storage type air conditioner during a cold heat storage operation.

FIG. 7 is an explanatory diagram showing an operation state of the regenerative air conditioner during a cold heat radiation operation in an engine stopped state.

FIG. 8 is an explanatory diagram of an operation state of the regenerative air conditioner during a dry operation.

FIG. 9 is a configuration diagram of a regenerative air conditioner for a vehicle according to an embodiment of the invention described in claims 1, 4 to 7;

FIG. 10 is a configuration diagram showing a conventional air conditioner.

FIG. 11 is a configuration diagram showing a conventional heating device.

FIG. 12 is a configuration diagram showing a conventional cooling device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 regenerative air conditioner 2 first coolant circuit 3 heat exchanger 4 air blower 5 second coolant circuit 6 centrifugal electric pump 7 latent heat storage device 7B latent heat storage material for heating 7C latent heat storage material for cooling 8 sensible heat storage Device 9 Cooling device 10 Drying circuit 11 Engine 13 Switching circuit 14 First switching valve 15 Second switching valve 17 Drying evaporator 21 Third switching valve 20 Blower 24 Fourth switching valve 27 Evaporator

Claims (7)

[Claims] 1. A first coolant circuit connected to an engine and circulating coolant by an engine water pump, and heats or cools air interposed in the first coolant circuit and guided from a vehicle interior. A heat exchanger, an air blowing device for supplying air sent from the heat exchanger into the vehicle interior by a blower, a second coolant circuit connected to the engine and circulating coolant, and in the middle of the first coolant circuit. A switching circuit for connecting a portion of the second coolant circuit to a portion of the second coolant circuit; a first switching valve provided in the middle of the switch circuit; a first coolant circuit provided in the first coolant circuit; A second switching valve for flowing or shutting off a coolant between the second coolant circuit and a third valve for flowing or shutting off a coolant between the second coolant circuit and the engine; A switching valve, interposed in the middle of the second coolant circuit. A sensible heat storage device accommodating the evaporator, and a cooling liquid interposed in the middle of the second cooling liquid circuit and driven by a battery power supply to flow the cooling liquid to the first cooling liquid circuit, the second cooling liquid circuit, and the switching circuit. Heat storage for a vehicle, comprising: a centrifugal electric pump; and a cooling device including an evaporator provided in the middle of the second coolant circuit and a compressor driven by an engine of the vehicle. Air conditioner. 2. A third coolant circuit is connected in parallel with the second coolant circuit, and a latent heat storage device containing a cooling latent heat storage material is interposed in the middle of the third coolant circuit. 3. The three-coolant circuit according to claim 1, wherein a fourth switching valve is interposed between a pipe connection portion of the third and second coolant circuits and the latent heat storage device. Thermal storage air conditioner for vehicles. 3. The heat storage air conditioner according to claim 2, wherein the latent heat storage device contains a latent heat storage material for heating. 4. A latent heat storage device accommodating a cooling latent heat storage material in series with the sensible heat storage device is provided in the middle of the second cooling liquid circuit. An intermediate switching valve is interposed between the latent heat storage devices, a bypass path is provided in the second coolant circuit in parallel with the latent heat storage device, and a bypass valve is interposed in the middle of the bypass path. The regenerative air conditioner for a vehicle according to claim 1. 5. The air conditioner of claim 4, wherein the latent heat storage device contains a latent heat storage material for heating. 6. A cooling circuit is connected to a drying circuit that bypasses the evaporator, a drying evaporator is arranged in the middle of the drying circuit, and the drying evaporator and the heat exchanger are arranged so that air passes therethrough. The regenerative air conditioner for a vehicle according to any one of claims 1 to 5, wherein the air conditioner is housed in a unit. 7. The regenerative air conditioner for a vehicle according to claim 1, wherein a power input portion of the centrifugal electric pump is connected to a battery of the vehicle.