JPH06211029A - Cooling device for automobile - Google Patents

Abstract

PURPOSE:To provide an automobile cooling device of such constitution as to perform cooling by the cold accumulated in a cold accumulator. CONSTITUTION:A cooling device for an automobile is provided with a compressor 5 for compressing a cooling medium, a condenser 6 for radiating the heat of the cooling medium to the outside, an expansion valve 7 for expanding the cooling medium, and an evaporator 8 for releasing the cold of the cooling medium into the air to be sent into the vehicle interior. This cooling device is further provided with a cold accumulator 19 for accumulating the cold, a heat exchanger 17 for performing heat exchange with the cooling medium or with the air to be sent into the vehicle interior, a pump 18 for circulating a cold accumulating medium between the cold accumulator 19 and the heat exchanger 17, and a control circuit 4 for making the cold accumulator 19 accumulate or release the cold according to the operating state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle cooling device.

[0002]

2. Description of the Related Art When a vehicle is stopped in the hot summer in the summer with the engine stopped, the temperature inside the vehicle becomes considerably high. Therefore, there is a demand for rapidly cooling the vehicle after the engine is started.

As a countermeasure against this, a conventional automobile air-conditioning apparatus is proposed, for example, as shown in Japanese Patent Laid-Open No. 61-193914, which is provided with a regenerator which stores heat by utilizing an endothermic reaction of a metal hydride. ing.

[0004]

However, in such a conventional automobile air-conditioning system, the structure becomes complicated because it is necessary to consider the closed system in which the chemical reaction takes place and the reaction gas. There was a problem that the space and weight to be mounted on the car became too large.

Further, for example, in JP-A-2-220923, a regenerator that stores cold heat is connected to a refrigerant of a cooling device via a regenerator so that heat can be exchanged with the regenerator and a regenerator body sent from the regenerator is discharged. It has been proposed to circulate the cooling evaporator to cool the air sent into the passenger compartment.

However, in this case, an evaporator, a compressor, a fan and the like must be added in addition to the regenerator, and there is a problem that the space and weight are too large to be mounted on an automobile.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an air conditioner for an automobile which cools air by the cold heat stored in the regenerator.

[0008]

SUMMARY OF THE INVENTION The present invention is directed to a compressor for compressing a cooling medium, a compressor for compressing the cooling medium, a condenser for releasing the heat of the cooling medium to the outside, and an expansion for expanding the cooling medium. In a vehicle air-conditioning apparatus including a valve and an evaporator that releases the cold heat of a cooling medium to the air sent to the passenger compartment, a regenerator that stores the cold heat and a heat that exchanges heat with the cooling medium or the air sent to the passenger compartment. It is provided with an exchanger, a pump that circulates a refrigerant storage medium between the regenerator and the heat exchanger, and a control circuit that causes the regenerator to cool or cool according to the operating state.

The invention according to claim 2 is, as shown in FIG. 2, means 101 for detecting the temperature Tr in the passenger compartment, and when the temperature Tr in the passenger compartment is higher than a reference value Trh, it is judged that a quick cooling is required. Means 102, and a control means 111 for driving both the compressor 5 and the pump 18 when quick cooling is required.

According to a third aspect of the present invention, as shown in FIG. 3, means 104 for setting the required temperature Trs in the passenger compartment,
A means 101 for detecting the temperature Tr in the passenger compartment, a means 105 for determining that a quick cooling is required when the difference between the temperature Tr in the passenger compartment and the required temperature Trs is larger than a reference value Trd, and a compressor when a quick cooling is required. 5 and the control means 103 for driving the pump 18 together.

According to the fourth aspect of the present invention, as shown in FIG. 4, a means 106 for detecting the temperature Ti of the refrigerant storage medium on the upstream side of the regenerator and a temperature To of the refrigerant storage body To on the downstream side of the regenerator are detected. Means 107, means 108 for determining that the cool storage unit requires a cool storage when the temperature difference between the upstream and downstream sides of the cool storage unit is smaller than the reference value Td; The control means 109 which drives is provided.

According to a fifth aspect of the present invention, as shown in FIG. 5, the means 110 for determining when the vehicle is in rapid acceleration, the driving load of the compressor 5 during the rapid acceleration, and the pump 18 are provided.
And a control means 111 for driving.

According to a sixth aspect of the present invention, as shown in FIG. 6, means 112 for determining the idling time during warm-up of the engine, and reduction of the drive load of the compressor 5 during idling during the warm-up, The control means 113 which drives the pump 18 is provided.

As shown in FIG. 7, the invention according to claim 7 comprises means 114 for determining when the vehicle is decelerating, and control means 115 for driving both the compressor 5 and the pump 18 at the time of decelerating.

[0015]

In addition to the conventional cooling device, the present invention provides a regenerator for storing cold heat, a heat exchanger for exchanging heat with a cooling medium for cooling, and a regenerator and a heat exchanger. With a relatively simple structure including a pump that circulates the refrigerant storage body, cold storage that stores cold heat in the regenerator via the heat exchanger,
Cooling is performed by releasing the cold heat stored in the regenerator.

According to the second aspect of the present invention, by comparing the temperature Tr in the vehicle compartment with the reference value Trh, it is possible to accurately detect a high temperature state such as burning in the vehicle compartment in summer.

By driving both the compressor 5 and the pump 18 at the time of requesting such rapid cooling, the air sent into the passenger compartment is cooled in two stages of the evaporator and the heat exchanger, thereby rapidly cooling the passenger compartment. be able to.

According to the third aspect of the present invention, by comparing the difference between the temperature Tr in the passenger compartment and the required temperature Trs with the reference value Trd, it is possible to accurately determine the demand time for quick cooling.

According to the fourth aspect of the present invention, the temperature difference (Ti-T) between the refrigerant storing bodies on the upstream side and the downstream side of the regenerator is shown.
By comparing o) with the reference value Td, it is possible to accurately determine the cool storage demand time of the regenerator.

By driving both the compressor 5 and the pump 18 at the time of requesting cold storage, cold heat is stored in the cold storage via the heat exchanger.

According to the fifth aspect of the present invention, the drive load of the compressor 5 is reduced when the vehicle is rapidly accelerated, and the pump 18 is driven to continue cooling from the cold heat stored in the regenerator, The load for driving the compressor 5 is prevented from impairing the acceleration performance.

According to the sixth aspect of the invention, the drive load of the compressor 5 is reduced at the time of idling while the engine is warming up, and the pump 18 is driven to continue cooling from the cold heat stored in the regenerator. However, the fuel efficiency of the engine can be reduced.

In the seventh aspect of the present invention, the compressor 5 and the pump 18 are both driven during deceleration of the vehicle, so that the kinetic energy of the vehicle can be used to store cold during deceleration.

[0024]

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

In FIG. 1, 5 is a variable capacity type compressor whose capacity can be controlled from the outside, 6 is a condenser, 41 is a liquid receiver, 7 is an expansion valve, and 8 is an evaporator. The high-pressure and high-temperature cooling medium gas compressed by the compressor 5 is sent to the condenser 6, radiates heat to the outside air in the condenser 6 to be liquefied, and then passes through the expansion valve 7 to be expanded and thereby low-temperature low-pressure liquid. Enters the evaporator 8 and is vaporized while releasing cold heat to the air sent through the blower (blower) 10 in the evaporator 8 to become low-pressure gas and is sucked into the compressor 5 again. On the other hand, the evaporator 8
The air cooled by passing through the
It is sent to the vehicle interior through 5 to cool the vehicle interior.

Reference numeral 11 is an air mix damper, and 9 is a heater core. The air sent from the blower 10 is warmed by passing through the heater core 9 via the air mix damper 11.

The air conditioning duct 15 is provided with three air outlet switching dampers 12, 13 and 14 so that the air outlets into the passenger compartment can be switched.

Reference numeral 19 is a regenerator. The regenerator 19 is covered with, for example, a heat insulating material or has a heat insulating structure such as a thermos, and stores the refrigerant medium itself therein, or fills the inside with the heat accumulating material to store cold heat in the heat accumulating material. It is like this.

The air conditioning duct 15 is provided with a heat exchanger 17 downstream of the evaporator 8. The ventilation path switching damper 16 is provided on the upstream side of the heat exchanger 17. Ventilation switching damper 1
As shown in FIG. 8, reference numeral 6 denotes a fully open position in which the entire amount of air sent from the blower 10 is introduced to the heat exchanger 17, a half-open position in which a part of the air sent from the blower 10 is introduced to the heat exchanger 17, It can be switched to a closed position where the air flow guided to the exchanger 17 is shut off.

Reference numeral 18 is a pump. The pump 18 circulates a refrigerant storage body between the regenerator 19 and the heat exchanger 17.

Reference numeral 4 is a control circuit. The control circuit 4 inputs a signal for detecting the operating state of the air conditioner and a signal for detecting the operating state of the vehicle, and the compressor 5, the blower 10, the air mix damper 11, the outlet switching dampers 12, 13, 1 are input.
4. The ventilation path switching damper 16 and the pump 18 are comprehensively controlled.

In order to know the operating state of the cooling device, the control circuit 4 detects the temperature of the refrigerant at the inlet and outlet of the regenerator 19 and the temperature of the refrigerant at the outlet of the evaporator 8, respectively. A sensor 20 for detecting, a sensor 23 for detecting the temperature of air passing through the evaporator 8, a sensor 24 for detecting the temperature of air passing through the heat exchanger 17, a sensor 25 for detecting the temperature inside the vehicle compartment, and a room temperature setting switch 26. In order to know the driving state of the vehicle, the cooling water temperature sensor 29 of the engine 1 and the vehicle speed sensor 3 are input.
0, the opening sensor 27 of the accelerator pedal 2, the brake pedal switch 28 for detecting the depression of the brake pedal 3
The signal from is input.

FIG. 9 is a flow chart for performing the rapid cooling, which is executed at a constant cycle.

Explaining this, when the engine is started, the pump 18 is driven for a few seconds in order to know the temperature To of the refrigerant stored in the regenerator 19, and at the same time the regenerator 1 is operated.
The temperature To of the storage medium is detected by the sensor 22 provided at the outlet of 9 (steps 1 and 2).

When the starter switch is turned off and the engine speed rev rises, it is determined that the engine 1 has been started (step 3).

After the engine 1 is started, the temperature To of the refrigerant storage body To
Is lower than the reference value Tol and there is a sufficient amount of cold storage (step 4), the vehicle compartment temperature Tr is a high temperature equal to or higher than the reference value Trh (step 5), and the conditions for operating the cooling device are complete. It is determined whether it is a request time (steps 6 and 7). Note that the control content performed in step 5 corresponds to the function of the rapid cooling demand determination means 102 in FIG. Trh defined as a reference value is a temperature that reaches a high temperature state such as during burning of the vehicle interior in summer.

When the rapid cooling is required, the pump 18 is driven and the ventilation path switching damper 16 is held at the fully open position (step 8). The control content performed in step 8 corresponds to the function of the rapid cooling control means 103 in FIGS. 2 and 3.

As a result, the air sent from the blower 10 is cooled in two stages of the evaporator 8 and the heat exchanger 17, and the interior of the vehicle is rapidly cooled. FIG. 12 is a characteristic diagram of the cool-down performance showing the relationship between the vehicle interior temperature and the time when the vehicle interior is hot. As shown in the figure, compared to normal cooling in which the pump 18 is not driven, the pump 18 is driven faster. Cooling can lower the vehicle interior temperature more quickly.

Then, in step 9, the temperature T of the storage medium is
o increases above the reference value Ti and the amount of cold storage in the regenerator 19 becomes insufficient, or the difference between the vehicle interior temperature Tr and the set temperature Trs becomes smaller than the reference value Trd to perform sufficient cooling, or It is determined whether the temperature Ta2 of the air passing through the heat exchanger 17 is higher than the reference value Ta1, and if any one of these conditions is satisfied, step 10 is performed.
Then, the drive of the pump 18 is stopped, the air flow to the heat exchanger 17 is shut off via the ventilation path switching damper 16, and the cooling by the regenerator 19 is stopped. Note that the control content performed in step 9 corresponds to the function of the rapid cooling demand determination means 105 in FIG.

FIG. 10 is a flow chart for performing cold storage in the regenerator 19.

Explaining this, first, it is judged whether or not the cooling device is operating (steps 11, 1).
2) If the cooling device is stopped, the pump 18 is stopped and the ventilation path switching damper 16 is held at the closed position (step 18).

When the cooling device is in operation, the operating state in which the cooling is sufficiently performed because the difference between the passenger compartment temperature Tr and the set temperature Trs is smaller than the reference value Trd is judged (step 13), The temperature To of the regenerator body on the downstream side of the regenerator 19 is higher than the reference value Tol, and the regenerator 1
9 temperature difference Ti-T of the refrigerant storage body on the upstream side and the downstream side
When o is larger than the reference value Td, the cold storage 19 has a cold heat input and output.
4) When it is determined that the cool storage is required, the ventilation path switching damper 16 is held in the half-open position, and the pump 18 is driven together with the compressor 5 to store the cool in the cool storage 19 (steps 15 and 16). If the compressor 5 is stopped by the control of step 1, the pump 18 is also stopped (step 17). In addition,
The control content performed in step 14 corresponds to the function of the cool storage demand determination means 108 in FIG.
The control content performed in 6 corresponds to the function of the cold storage control unit 109.

In this manner, the air cooled in the evaporator 8 is guided to the heat exchanger 17, whereby the refrigerant storage medium circulating in the evaporator 8 is cooled, and the internal temperature of the regenerator 19 is lowered. In step 14, the temperature difference Ti-To of the refrigerant storage bodies on the upstream side and the downstream side of the regenerator 19 is the reference value Td.
By continuing to cool the storage medium until the temperature becomes the following, it is possible to reliably store a predetermined amount of heat in the regenerator 19.

FIG. 11 is a flow chart for performing various controls according to the driving state of the automobile.

Explaining this, the operating state in which normal cooling is performed is determined (steps 19 and 20),
This condition is such that the vehicle is suddenly accelerated during normal cooling, the idle operation is performed during warm-up, or the temperature of the cooling medium is significantly lowered, and an operation that may cause a failure or the like is performed. The condition is determined (step 21), and when it is determined that this operating condition is satisfied, the drive of the compressor 5 is stopped or the capacity of the compressor 5 is reduced to reduce the drive load, and the blower 10 is continuously driven. Meanwhile, the pump 18 is driven and the ventilation path switching damper 16 is held in the half-open position (step 22).

In this way, the compressor 5 is stopped at the time of idling during warm-up, or the capacity of the compressor 5 is reduced to reduce the driving load, so that cooling is continued from the cold heat stored in the regenerator 19. However, it is possible to reduce fuel consumption.

Further, by stopping the compressor 5 at the time of sudden acceleration or reducing the capacity of the compressor 5 to reduce the driving load, it is possible to impair the acceleration performance by the load for driving the compressor 5. To avoid.

The determination at the time of sudden acceleration of the vehicle, which is made in step 21, is carried out by determining the accelerator opening sensor 27 and the vehicle speed sensor 30.
It is performed based on the detection signal of. This control content corresponds to the function of the rapid acceleration determination means 110 in FIG.

Similarly, at the time of idling during warm-up, which is performed in step 21, the cooling water temperature Te detected by the cooling water temperature sensor 29 is lower than the reference value Tel, and the vehicle speed V detected by the vehicle speed sensor 30 is the reference value. It is performed depending on whether V1 or less. This control content corresponds to the function of the idling time determination means 112 during warm-up shown in FIG.

The control contents performed in step 22 correspond to the functions of the cooling control means 111 and 113 in FIGS. 5 and 6.

When it is detected that the warm-up has been completed, the vehicle has exited the sudden acceleration state, or the temperature of the cooling medium has returned to normal (step 23), the compressor 5 is restarted at the same time. The pump 18 is stopped and the ventilation path switching damper 16 is held in the closed position (step 24). As a result, the cooling by the regenerator 19 is completed and only the evaporator 8 cools.

In step 25, the temperature To of the regenerator body on the downstream side of the regenerator 19 is higher than the reference value Tol, the cool storage demand of the regenerator 19 is determined. As described above, the procedure proceeds to step 11 and thereafter to hold the ventilation path switching damper 16 in the half-open position, and
The pump 18 is driven together with the compressor 5 to store heat in the regenerator 19.

However, when the condition in step 23 is satisfied, the routine proceeds to step 26, where the temperature To of the storage medium is To.
Rises above the reference value Ti and the amount of cold storage in the regenerator 19 becomes insufficient, or the difference between the vehicle interior temperature Tr and the set temperature Trs becomes smaller than the reference value Trd to perform sufficient cooling, or Temperature T of the air passing through the exchanger 17
It is determined whether or not a2 is higher than the reference value Ta1, and if any one of these conditions is satisfied, the routine proceeds to step 24, where the cooling by the regenerator 19 is finished and only the evaporator 8 is cooled. When none of these conditions are satisfied in step 26, the process proceeds to step 27, and when it is confirmed that the temperature To of the storage medium on the downstream side of the regenerator 19 becomes higher than the reference value Tol, the process proceeds to step 28. The cooling by the regenerator 19 is completed, the compressor 5 is driven, and only the evaporator 8 cools.

When the deceleration of the vehicle is detected while the vehicle is running and the cooling device is not operating, the regenerator 19 stores cold.

Explaining this control, the pump 18 is driven every few tens of seconds for several seconds while the cooling device is not operating, and the temperature T of the refrigerant storage body downstream of the regenerator 19 is reached.
It is determined whether or not o is higher than the reference value Tol and the amount of cold storage is not sufficient (steps 29 to 33).

If it is determined in step 32 that the vehicle is in an operating state in which the amount of cold storage is insufficient, the routine proceeds to step 34, where the vehicle speed V is equal to or higher than the reference value V2 (V2> V1), and based on the signal from the brake pedal switch 28. Then, it is determined whether the brake pedal 3 is being depressed or not during deceleration. Note that the control content performed in this step 34 corresponds to the function of the deceleration time determination means 114 in FIG. 7.

When it is detected in step 34 that the vehicle is decelerating, the routine proceeds to step 35, where the ventilation path switching damper 1
6 is held in the half-open position, the blower outlet switching dampers 12, 13, 14 are switched to the DEF position for sending the wind toward the window so that the human body is not directly exposed to the wind, and the blower 10, the compressor 5 and the pump 18 are driven. Then, the internal temperature of the regenerator 19 is lowered. This makes it possible to store cold by utilizing the kinetic energy of the vehicle during deceleration. The control content performed in step 35 corresponds to the function of the cold storage control means 115 in FIG. 7.

In step 36, the vehicle speed V is changed to the reference value V3 (V2
When it detects a low speed running state of> V3) or less, the routine proceeds to step 37, the driving of the pump 18 and the blower 10 is stopped, and the heat exchanger 1 is passed through the ventilation path switching damper 16.
The air flow to 7 is cut off, and the cold storage of the regenerator 19 is stopped.

Next, in another embodiment shown in FIG. 13, the first heat exchanger 17 provided in the air conditioning duct 15 is exclusively used for cooling, and a cooling medium circulating downstream of the expansion valve 7 is used. A second heat exchanger 34 for exchanging heat with the storage medium is provided. Hereinafter, this will be described, but the portions corresponding to those in FIG. 1 or FIGS. 9 to 11 are denoted by the same reference numerals and the description thereof will be omitted.

Between the regenerator 19 and the pump 18, a regenerator circuit 35 in which a second heat exchanger 34 is interposed via a three-way switching valve 32 and a cooler circuit 36 in which the first heat exchanger 17 is interposed.
Are arranged in parallel. The three-way switching valve 32 has a position where the refrigerant storing medium circulates in the first heat exchanger 17 for cooling as shown by a solid arrow in FIG. The exchanger 34 is circulated to switch to a position for storing cold.

The second heat exchanger 34 is arranged between the expansion valve 7 and the evaporator 8 in parallel with the bypass pipe 33 via the three-way switching valve 31. The three-way switching valve 31 has a cooling medium shown in FIG.
4, a position where the evaporator 8 is circulated through the bypass pipe 33 as shown by a solid line arrow for cooling, and a cooling medium is circulated through the second heat exchanger 34 as shown by a broken line arrow in FIG. To switch to the cold storage position.

FIG. 15 is a flow chart for performing quick cooling. When quick cooling is requested, the process proceeds to step 8 to drive the pump 18, hold the ventilation path switching damper 16 in the fully open position, and allow the three-way switching valve 32 to cool. The circuit 36 is switched to a position where the bypass pipe 33 is opened, and the three-way switching valve 31 is switched to a position where the bypass pipe 33 is opened. As a result, the air sent from the blower 10 is cooled in two stages of the evaporator 8 and the heat exchanger 17, so that the passenger compartment is rapidly cooled. The contents of the control performed in step 8 correspond to the function of the rapid cooling control means 103 in FIGS. 2 and 3.

In step 9, the temperature To of the storage medium rises above the reference value Ti and the amount of cold storage in the regenerator 19 becomes insufficient, or the difference between the vehicle compartment temperature Tr and the set temperature Trs becomes smaller than the reference value Trd. Is it sufficiently cooled?
Alternatively, when it is determined that the temperature Ta2 of the air that has passed through the heat exchanger 17 is higher than the reference value Ta1, the process proceeds to step 10, the driving of the pump 18 is stopped, and the ventilation path switching damper 1
The air flow to the heat exchanger 17 is shut off via 6, and the three-way switching valve 32 is switched to the position where the cold storage circuit 35 is communicated with it to stop the cooling by the cold storage 19.

FIG. 16 is a flow chart for storing heat in the regenerator 19. When the cooling device is stopped, the process proceeds to step 18 to stop the drive of the pump 18 and the ventilation path switching damper 16 is used. The air flow to the heat exchanger 17 is cut off, the three-way switching valve 32 is switched to the position for communicating the cold storage circuit 35, and the cooling by the cold storage 19 is also stopped.

When it is confirmed at step 15 that the compressor 5 is being driven at the time of requesting cold storage, the routine proceeds to step 16, where the pump 18 is driven and the three-way switching valve 32 is switched to the position where the cold storage circuit 35 is opened. , The three-way switching valve 31 is switched to a position where the bypass pipe 33 is closed to store the cold in the regenerator 19. At this time, unlike the embodiment of FIG. 1, it is not necessary to hold the ventilation path switching damper 16 in the half-open position, and this switching frequency can be reduced.
When the compressor 5 is stopped, the routine proceeds to step 17, where the pump 18 is stopped and the three-way switching valve 31 is switched to a position where the bypass pipe 33 is opened. The contents of the control performed in steps 15 and 16 correspond to the function of the cold storage control unit 109.

FIG. 17 is a flow chart for performing various controls according to the operating state of the automobile. In step 21, the regenerator 1
When it is determined that the operating condition is such as during rapid acceleration in which cooling is performed only by the cold heat stored in 9, the process proceeds to step 22, the compressor 5 is stopped, the blower 10 is continuously driven, and the pump 18 is driven. Then, the ventilation path switching damper 16 is held in the half-open position, the three-way switching valve 32 is switched to the position for opening the cooling circuit 36, and the three-way switching valve 31 is switched to the position for opening the bypass pipe 33. Note that the control contents performed in this step 22 are shown in FIG. 5 and FIG.
This corresponds to the function of the cooling control means 111, 113 in.

When the compressor 5 is restarted, in steps 24 and 28, the compressor 5 is driven, the pump 18 is stopped, the ventilation path switching damper 16 is held in the closed position, and the three-way switching valve 32 is turned on. The cold storage circuit 35 is switched to a position where it is opened.

Further, when the cooling device is not in operation while the vehicle is traveling, for controlling the cold storage of the cold storage 19 when the vehicle is decelerated, in step 35, the blower 10, the compressor 5 and the pump 18 are driven, The switching valve 32 is switched to a position where the cold storage circuit 35 is opened, and the three-way switching valve 31 is switched to a position where the bypass pipe 33 is closed to store cold in the regenerator 19. At this time, unlike the embodiment of FIG. 1, it is not necessary to hold the ventilation path switching damper 16 in the half-open position, and the air outlet switching dampers 12, 13, 14 are directed toward the windows so that the human body is not directly exposed to the wind. Send D
There is no need to switch to the EF position. The control content performed in step 35 corresponds to the function of the cold storage control means 115 in FIG. 7.

When the low speed traveling state in which the vehicle speed V becomes equal to or lower than the reference value V3 is detected in step 36, the process proceeds to step 37, the driving of the pump 18 is stopped, and the three-way switching valve 31 is switched to the position where the bypass pipe 33 is opened. .

[0070]

As described above, according to the present invention, a regenerator for storing cold heat, a heat exchanger for exchanging heat with the cooling medium or air sent to the passenger compartment, and between the regenerator and the heat exchanger. Since it is equipped with a pump that circulates the storage refrigerant body and a control circuit that performs regenerator or cooling of the regenerator depending on the operating state, the air sent to the vehicle interior during the burning of the vehicle interior in summer etc. It can be cooled in two stages of an evaporator and a heat exchanger for rapid cooling, and can be realized without requiring a great change in conventionally used sensors and actuators.

According to the second aspect of the invention, the temperature Tr in the vehicle compartment is
With the configuration in which the reference value Trh is compared with the reference value Trh, it is possible to accurately detect a high temperature state such as during the burning of the vehicle interior in summer.

According to the third aspect of the present invention, the time required for quick cooling can be accurately determined by the configuration in which the difference between the temperature Tr in the passenger compartment and the required temperature Trs is compared with the reference value Trd.

According to the fourth aspect of the present invention, the temperature difference (Ti-To) between the refrigerant storage bodies on the upstream side and the downstream side of the regenerator is compared with the reference value Td, so that the regenerator demands the regenerator accurately. Can be determined.

According to a fifth aspect of the present invention, the drive load of the compressor is reduced when the vehicle is rapidly accelerated, and the pump is driven, so that the compressor 5 is continuously cooled by the cold heat stored in the regenerator. It is possible to prevent the acceleration performance from being impaired by the load for driving the.

According to the sixth aspect of the present invention, the drive load of the compressor is reduced at the time of idling while the engine is warming up, and the pump is driven to continue cooling from the cold heat stored in the regenerator, The fuel efficiency of the engine can be reduced.

According to the seventh aspect of the present invention, the compressor and the pump are both driven during deceleration of the vehicle, so that the kinetic energy of the vehicle can be used for cold storage during deceleration.

[Brief description of drawings]

FIG. 1 is a mechanical configuration diagram showing an embodiment of the present invention.

FIG. 2 is a claim correspondence diagram of the invention according to claim 2;

FIG. 3 is a diagram corresponding to claims of the invention according to claim 3;

FIG. 4 is a diagram corresponding to claims of the invention according to claim 4;

FIG. 5 is a claim correspondence diagram of the invention according to claim 5;

FIG. 6 is a claim correspondence diagram of the invention according to claim 6;

FIG. 7 is a claim correspondence diagram of the invention according to claim 7;

FIG. 8 is a configuration diagram of an air conditioning duct showing an embodiment of the present invention.

FIG. 9 is a flowchart for explaining the same operation.

FIG. 10 is a flowchart for explaining the same operation.

FIG. 11 is a flowchart for explaining the same operation.

FIG. 12 is a characteristic diagram similarly showing the relationship between the indoor average temperature and the operating time.

FIG. 13 is a mechanical configuration diagram showing another embodiment.

FIG. 14 is a refrigerant circuit diagram of the same.

FIG. 15 is a flowchart for explaining the same operation.

FIG. 16 is a flowchart for explaining the same operation.

FIG. 17 is a flowchart for explaining the same operation.

[Explanation of symbols]

 1 Engine 4 Control Circuit 5 Compressor 6 Condenser 7 Expansion Valve 8 Evaporator 10 Blower 16 Ventilation Switching Damper 17 Heat Exchanger 18 Pump 19 Regenerator

Claims (7)

[Claims] 1. A compressor for compressing a cooling medium, a condenser for releasing the heat of the cooling medium to the outside, an expansion valve for expanding the cooling medium, and an evaporation for releasing the cold heat of the cooling medium to the air sent into the passenger compartment. In a vehicle air-conditioning system including a cooler, a regenerator for storing cold heat, a heat exchanger for exchanging heat with the cooling medium or air sent to the passenger compartment, and a refrigerant storage medium circulating between the regenerator and the heat exchanger. An air conditioner for an automobile, comprising: a pump for controlling the temperature of the regenerator; 2. A means for detecting a temperature inside the vehicle compartment, a means for determining that a quick cooling request is made when the temperature inside the vehicle compartment is higher than a reference value, and a compressor and a pump are driven together when the rapid cooling request is made. Control means is provided, Claim 1 characterized by the above-mentioned.
The cooling device for an automobile according to the description. 3. A means for setting a required temperature inside the vehicle compartment, a means for detecting a temperature inside the vehicle interior, and a case where a demand for quick cooling is determined when a difference between the temperature inside the vehicle interior and the required temperature is larger than a reference value. Means for controlling the compressor and the pump to drive the compressor and the pump when the rapid cooling is required.
The cooling device for an automobile according to the description. 4. A means for detecting the temperature of the refrigerant storage body on the upstream side of the regenerator, a means for detecting the temperature of the refrigerant storage body on the downstream side of the regenerator, and a temperature of the refrigerant storage body on the upstream side and the downstream side of the regenerator. The cooling system for an automobile according to claim 1, further comprising: a unit that determines that the cool storage unit requires a cool storage when the difference is larger than a reference value; and a control unit that drives both the compressor and the pump when the cool storage request is made. apparatus. 5. A means for determining when the vehicle is in rapid acceleration, and a control means for driving the pump while reducing the drive load of the compressor at the time of sudden acceleration.
The cooling device for an automobile according to the description. 6. A means for determining an idling time while the engine is warming up, and a control means for driving a pump while reducing the driving load of the compressor at the idling time during the warming up. The vehicle air conditioner according to claim 1. 7. The cooling system for an automobile according to claim 1, further comprising: a unit that determines when the vehicle is decelerating, and a control unit that drives both the compressor and the pump when the vehicle is decelerating.