JP2011057120A - Air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle that reduces fuel consumption by controlling drive of a compressor according to a cold-storage state of a cold-storage material. <P>SOLUTION: When it is confirmed by input information from an ENG-ECU (21) that a cold-storage state of a cold-storage material (16) exceeds a prescribed cold-storage state, an A/C-ECU (42) stops drive of a compressor (11), switches an air-passage switching door and motor (17), and uses a cold-storage cooler that sends air to the cold-storage material (16) and cools the cold-storage material. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle air conditioner and relates to a technique for controlling a compressor according to a cold storage state of a cold storage material.

Conventionally, in a vehicle air conditioner, in a season when the amount of solar radiation is large, the structural material constituting the passenger compartment is always heated from the outside and is maintained even if the passenger compartment reaches a desired temperature. Requires a lot of energy.
Therefore, there is a problem that the drive energy of the compressor constituting the vehicle air conditioner increases, the load of the engine driving the compressor increases, and the fuel consumption deteriorates.

  For this reason, when the engine is braked when fuel is cut when the passenger compartment is maintained at a stable and comfortable temperature, the engine enters the cold storage mode to increase the driving force of the compressor and increase the refrigeration capacity. A vehicle air conditioner has been developed that can store the increased amount in the cold storage material to cool the structural material constituting the passenger compartment and store the cold storage material without increasing the fuel efficiency (see Patent Document 1).

JP 2004-148860 A

In the vehicle air conditioner of Patent Document 1 described above, a cold storage mode is entered during engine braking when the passenger compartment is stably maintained at a comfortable temperature, and the driving force of the compressor is increased to increase the refrigeration capacity. The increased amount is stored in the cool storage material.
However, even if the cold storage state of the cold storage material is sufficient, when the engine brake state is entered while the passenger compartment is stably maintained at a comfortable temperature, the cold storage mode is always set to increase the refrigeration capacity and cool the cold storage material, and the compressor It will always be working.

In addition, the compressor is always operated when cooling air conditioning is required, which is not preferable because fuel consumption increases.
The present invention has been made to solve such a problem, and the object of the present invention is to reduce the fuel consumption by controlling the drive of the compressor according to the cold storage state of the cold storage material, and to improve the durability of the compressor. It is providing the vehicle air conditioner which can aim at improvement of this.

  In order to achieve the above object, a vehicle air conditioner according to a first aspect of the present invention includes a refrigeration circuit including a compressor, a condenser, an expansion valve, and an evaporator that operate as an auxiliary machine of an internal combustion engine for running a vehicle, and external air or air to the evaporator. In a vehicle air conditioner having a blower for sending inside air and a cold storage material for storing cold air by the outside air or inside air passing through the evaporator and capable of freely changing the cooling capacity of the vehicle interior, the vehicle running state is Vehicle running state detection means for detecting, cold storage state determination means for determining the cold storage state of the cold storage material, and air passage switching member that switches part or all of the flow of outside air or inside air that has passed through the evaporator to the cold storage material side And air conditioning control means for controlling the drive of the compressor and the switching operation of the air passage switching member, the air conditioning control means, When the vehicle is in a running state based on the detection results of the both running state detection means, the cold storage state of the cold storage material is less than a predetermined cold storage state based on the determination result of the cold storage state determination means, and the running state does not depend on the internal combustion engine. When in the no-load running state, the compressor driving force is increased and the air passage switching member is switched, and the air flow passing through the evaporator is stored in the cold storage material as the cold storage material side while If the cold storage state of the cold storage material is equal to or higher than a predetermined cold storage state based on the determination result of the cold storage state determination means, the compressor is stopped and the air passage switching member is switched to Cooling is performed by the cold storage material with the flow as the cold storage material side.

  Further, in the vehicle air conditioner according to claim 2, in the invention according to claim 1, the air conditioning control means requires cooling of the passenger compartment when the vehicle is in a running state based on a detection result of the vehicle running state detecting means. If the cold storage state of the cold storage material is greater than or equal to a predetermined cold storage state based on the determination result of the cold storage state determination means, the compressor is not operated even if the traveling state is a no-load traveling state that does not depend on the internal combustion engine. It is characterized by.

  According to a third aspect of the present invention, there is provided a vehicle air conditioner according to the first or second aspect of the present invention, further comprising a traveling wind inlet through which the traveling wind can be introduced as outside air in front of the vehicle. And control of the introduction of inside air and the operation of the blower, and when the vehicle interior needs to be cooled, if the vehicle speed detected by the vehicle running state detecting means is equal to or higher than a predetermined vehicle speed, the running A driving wind is introduced from the wind inlet as outside air and the blower is stopped.

  According to a fourth aspect of the present invention, in the vehicle air conditioner according to any one of the first to third aspects, the air conditioning control means further measures the stop time of the vehicle and switches between the operation and the stop of the internal combustion engine. When the vehicle has stopped for a predetermined time or longer and is not in the running state based on the detection result of the vehicle running state detecting means, the vehicle compartment needs to be cooled, and the cold storage state of the cold storage material is the predetermined cold storage state. As described above, the internal combustion engine is stopped and the air passage switching member is switched to cool the air flow with the air flow as the cold storage material side.

  According to the invention of claim 1, it has cold storage state determination means for determining the cold storage state of the cold storage material, and air conditioning control means for controlling the drive of the compressor and the switching operation of the air passage switching member. When the vehicle is in a running state, if the cold storage state of the cold storage material is less than a predetermined cold storage state and the running state is a no-load running state that does not depend on the internal combustion engine, the driving force of the compressor is increased and the evaporator is passed. While storing air in the regenerator material with the air flow as the regenerator material side, cooling of the passenger compartment is required, and if the regenerator state of the regenerator material is equal to or higher than the predetermined regenerator state, the compressor is stopped and the air flow is stopped. Is used for cooling with the cold storage material.

  As a result, when the vehicle is in a running state and cooling of the passenger compartment is required, the compressor can be stopped when the cold storage state of the cold storage material is equal to or higher than the predetermined cold storage state. It is possible to continue cooling the passenger compartment while suppressing fuel consumption and reducing fuel consumption.

According to the invention of claim 2, when the vehicle is in a running state, the cooling of the passenger compartment is not necessary, and the running state depends on the internal combustion engine if the cold storage state of the cold storage material is greater than or equal to a predetermined cold storage state. The compressor is stopped even in a no-load running state.
As a result, when the vehicle interior is not required to be cooled and the cold storage state of the cold storage material is equal to or higher than the predetermined cold storage state, cold storage is not performed on the cold storage material even when the traveling state is an unloaded traveling state that does not depend on the internal combustion engine. Therefore, it is possible to suppress unnecessary driving of the compressor and improve the durability of the compressor.

According to the invention of claim 3, since the blower is stopped at a predetermined vehicle speed or more and the traveling wind is introduced from the traveling wind introduction port, the power consumption in the blower is eliminated, for example, the internal combustion by power generation in the alternator An increase in engine load can be suppressed, and fuel consumption can be further reduced.
Further, according to the invention of claim 4, the air conditioning control means requires cooling of the passenger compartment when the vehicle is not in a running state after being stopped for a predetermined time or more, and the cold storage state of the cold storage material is the predetermined cold storage. If it is above the state, the internal combustion engine is stopped and the air flow is used as the regenerator material to cool the regenerator material, so that the fuel consumption can be further reduced by stopping the internal combustion engine itself while the vehicle is stopped. Cooling of the passenger compartment can be continued.

It is a schematic block diagram of the vehicle air conditioner which concerns on 1st Example of this invention. It is a flowchart which shows the control routine of the air-conditioning control during the vehicle driving | running | working of the vehicle air conditioner which concerns on 1st Example of this invention. It is a flowchart which shows the control routine of the air-conditioning control at the time of the air_conditioning | cooling unused of the vehicle air conditioner which concerns on 1st Example of this invention. It is a flowchart which shows the control routine of the air-conditioning control in the air_conditioning | cooling use at the time of the vehicle stop of the vehicle air conditioner which concerns on 1st Example of this invention. It is a schematic block diagram of the vehicle air conditioner which concerns on 2nd Example of this invention. It is a flowchart which shows the control routine of the air-conditioning control in the air_conditioning | cooling use at the time of the vehicle stop of the vehicle air conditioner which concerns on 2nd Example of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First embodiment]
FIG. 1 is a schematic configuration diagram of a vehicle air conditioner according to a first embodiment of the present invention.

Hereinafter, the structure of the vehicle air conditioner of 1st Example of this invention is demonstrated.
In the figure, the white arrow indicates the air flow, and the thick solid line indicates the refrigerant flow.
As shown in FIG. 1, the vehicle air conditioner 1 includes a compressor 11, a condenser 12, an expansion valve 13, an evaporator 14, a blower 15, a cool storage material 16, an air passage switching door & motor (air passage switching member) 17, ENG−. ECU (vehicle running state detecting means) 21, accelerator opening sensor 22, intake manifold pressure sensor 23, vehicle speed sensor 24, navigation system 31, air conditioning operation unit 41, A / C-ECU (air conditioning control means, cold storage state determining means) 42 The outside air temperature sensor 43 is configured.

  The compressor 11, the condenser 12, the expansion valve 13, the evaporator 14, and the blower 15 constitute a cooler that is a vapor compression refrigeration cycle using a refrigerant, and introduces a traveling wind inlet 18 or inside air that introduces traveling wind that is outside air. The air introduced from the inside air introduction port 19 is cooled and blown into the passenger compartment.

The cool storage material 15 is disposed downstream of the evaporator 14, stores cooling energy from the air cooled by the evaporator 14, or cools the air introduced from the traveling wind introduction port 18 or the inside air introduction port 19. .
The air passage switching door and motor 17 is disposed between the evaporator 14 and the cool storage material 15 and distributes part or all of the air introduced from the traveling wind introduction port 18 or the inside air introduction port 19 to the cool storage material 15. Is.

The ENG-ECU 21 is a control device for performing comprehensive control of an engine (not shown), and includes an input / output device, a storage device (ROM, RAM, nonvolatile RAM, etc.), a central processing unit (CPU), and the like. Composed.
On the input side of the ENG-ECU 21, an accelerator opening sensor 22 that detects the accelerator opening, an intake manifold pressure sensor 23 that detects the pressure in the intake manifold, a vehicle speed sensor 24 that detects the speed of the vehicle, A navigation system 31 for guiding the surrounding situation is electrically connected, and detection information from these various sensors is input.

On the other hand, an A / C-ECU 42 is electrically connected to the output side of the ENG-ECU 21 in addition to the engine.
Thus, the ENG-ECU 21 calculates the driving conditions of the vehicle and the engine (not shown) based on detection information from various sensors, and supplies an output signal to the A / C-ECU 42.

The A / C-ECU 42 is a control device for performing comprehensive control of the air conditioner, and includes an input / output device, a storage device, a timer, a CPU, and the like, similar to the ENG-ECU 21.
The air-conditioning operation unit 41 has a cooler switch that sets the number of air-conditioning fan stages, temperature, and inside / outside air mode, and turns the air-conditioning power ON / OFF.

On the input side of the A / C-ECU 42, an ENG-ECU 21, an air conditioning operation unit 41, and an outdoor air temperature sensor 43 that detects the outdoor temperature are electrically connected. Detection information from the outdoor air temperature sensor 43, air conditioning operation The setting information of the unit 41 and the driving conditions of the vehicle and the engine are input.
On the other hand, to the output side of the A / C-ECU 42, the compressor 11, the blower 15, the air passage switching door & motor 17 and the ENG-ECU 21 are electrically connected.

  Thus, the A / C-ECU 42 calculates the operation content of the air conditioner based on the detection information from the outside air temperature sensor 43, the setting information of the air conditioning operation unit 41, and the operating conditions of the vehicle and the engine, and outputs the output signal to the compressor 11. , The blower 15 and the air passage switching door & motor 17, and further supplied to the ENG-ECU 21, the operation of the compressor 11 is switched according to the output signal, the operation of the blower 15 and the opening of the air passage switching door & motor 17 are controlled. Alternatively, the engine is operated via the ENG-ECU 21.

Hereinafter, the operation and effect of the vehicle air conditioner according to the first embodiment of the present invention thus configured will be described.
FIG. 2 is a flowchart showing a control routine for air-conditioning control while the vehicle air-conditioning apparatus according to the present invention is executed by the A / C-ECU 42. FIG. 3 is a flowchart showing air-conditioning control when the cooling is not used. 4 is a flowchart showing a control routine, and FIG. 4 is a flowchart showing a control routine of air-conditioning control in cooling use when the vehicle is stopped.

  As shown in FIG. 2, in step S10, it is determined whether the cooler switch of the air conditioning operation unit 41 is ON or OFF. If the determination result is true (Yes), the cooler switch is ON and cooling is required, the process proceeds to step S12. If the determination result is false (No), the cooler switch is OFF and the cooling is not required, the process proceeds to the air conditioning control when the cooling is not used from step S30.

  In step S12, it is determined whether or not the vehicle is traveling. If the determination result is true (Yes) and the vehicle is traveling, the process proceeds to step S14. If the determination result is false (No) and the vehicle is in a stopped state, air conditioning control for cooling use when the vehicle is stopped from step S40. move on.

[Air conditioning control while driving]
In step S14, it is determined from the input information from the ENG-ECU 21 whether the vehicle speed is equal to or higher than a predetermined vehicle speed. If the determination result is true (Yes) and the vehicle speed is equal to or higher than the predetermined vehicle speed, the process proceeds to step S22, the blower 15 is stopped, and the process proceeds to step S16. If the determination result is false (No) and the vehicle speed is lower than the predetermined vehicle speed, the process proceeds to step S16.

  In step S16, it is determined from the input information from the ENG-ECU 21 whether or not the cold storage state of the cold storage material 16 is equal to or higher than a predetermined cold storage state (for example, traveling for 4 hours at a vehicle speed of 40 km / h). If the determination result is true (Yes) and the cold storage state of the cold storage material 16 is equal to or greater than the predetermined cold storage state, the drive of the compressor 11 is stopped and the air passage switching door & motor 17 is switched to blow air to the cold storage material 16. Then, the cool storage cooler for cooling is used, and the process returns to step S10. If the determination result is false (No) and the cold storage state is less than the predetermined cold storage state, the process proceeds to step S18.

  In step S18, it is determined from the input information from the ENG-ECU 21 whether or not the engine is in a no-load operation state (for example, during deceleration or downhill). If the determination result is true (Yes) and the engine is in a no-load operation state, the process proceeds to step S26, and the air passage switching door & motor 17 is operated to increase the driving force of the compressor 11 and the engine brake is applied, and the regenerator 16 Then, the cooling air cooled by the evaporator 14 is blown, the cooling energy is stored in the cool storage material 16, and the process returns to step S10. If the determination result is false (No) and the engine is not in the no-load operation state, the process proceeds to step S20, the compressor 11 is normally driven, and the process returns to step S10.

[Air conditioning control when air conditioning is not used]
As shown in FIG. 3, in step S30, it is determined based on information from the outside air temperature sensor 43 whether or not the outside air temperature is equal to or lower than a predetermined temperature. If the determination result is true (Yes) and the outside air temperature is equal to or lower than the predetermined temperature, the process proceeds to step S32. If the determination result is false (No) and the outside air temperature is higher than the predetermined temperature, the process returns to step S10.

  In step S32, it is determined from the input information from the ENG-ECU 21 whether or not the cold storage state of the cold storage material 16 is greater than or equal to a predetermined cold storage state. If the determination result is true (Yes) and the cold storage state of the cold storage material 16 is equal to or greater than the predetermined cold storage state, the process returns to step S10 without driving the compressor 11. If the determination result is false (No) and the cold storage state is less than the predetermined cold storage state, the process proceeds to step S34.

  In step S34, it is determined from the input information from the ENG-ECU 21 whether or not the engine is in a no-load operation state. If the determination result is true (Yes) and the engine is in the no-load operation state, the process proceeds to step S36, and the air passage switching door & motor 17 is operated to increase the driving force of the compressor 11 and the engine brake is applied. Then, the cooling air cooled by the evaporator 14 is blown, the cooling energy is stored in the cool storage material 16, and the process returns to step S10. If the determination result is false (No) and the engine is not in the no-load operation state, the process returns to step S10 without driving the compressor 11.

[Air conditioning control when using air conditioning when the vehicle is stopped]
As shown in FIG. 4, in step S40, navigation information is received from the navigation system 31 via the ENG-ECU 21, and the process proceeds to step S42.
In step S42, it is determined from the navigation information whether the signal stop time is equal to or longer than a predetermined stop time. If the determination result is true (Yes) and the signal stop time is equal to or longer than the predetermined signal stop time, the process proceeds to step S44. If the determination result is false (No) and the signal stop time is shorter than the predetermined signal stop time, the process proceeds to step S48, the compressor 11 is normally driven, and the process returns to step S10.

  In step S44, it is determined from the input information from the ENG-ECU 21 whether or not the cold storage state of the cold storage material 16 is greater than or equal to a predetermined cold storage state. If the determination result is true (Yes) and the cold storage state of the cold storage material 16 is equal to or greater than the predetermined cold storage state, the process proceeds to step S46, an idling stop signal is transmitted to the ENG-ECU 21 to stop idling, and the air passage switching door & Switches the motor 17 and uses a cool storage cooler that blows air to the cool storage material 16 to cool and cool the air, and returns to step S10. If the determination result is false (No) and the cold storage state is less than the predetermined cold storage state, the process proceeds to step S48, the compressor 11 is normally driven, and the process returns to step S10.

As described above, according to the vehicle air conditioner according to the first embodiment of the present invention, the blower 15 is appropriately stopped based on the vehicle speed, and the compressor 11 is stopped based on the cold storage state of the cold storage material 16, thereby the cold storage material 16. The cool storage cooler using is used.
As a result, power consumption in the blower is eliminated, and an increase in engine load due to power generation in the alternator and driving of the compressor 11 can be suppressed, so that fuel consumption can be reduced. Moreover, useless driving of the compressor 11 can be suppressed and the durability of the compressor can be improved.

[Second Embodiment]
Next, a second embodiment will be described.
FIG. 5 is a schematic configuration diagram of a vehicle air conditioner according to a second embodiment of the present invention.
As shown in FIG. 5, in the second embodiment, a vehicle operation system 32 is added to the first embodiment, and the differences from the first embodiment will be described below.

The vehicle operation system 32 inputs operation information such as a waiting place / time and a resting place / time, and outputs the operation information to the ENG-ECU 21.
An accelerator opening sensor 22, an intake manifold pressure sensor 23, a vehicle speed sensor 24, a navigation system 31, and a vehicle operation system 32 are electrically connected to the input side of the ENG-ECU 21, and detection information from these various sensors is obtained. Entered.

On the other hand, the A / C-ECU 42 is electrically connected to the output side of the ENG-ECU 21 as in the first embodiment, and the ENG-ECU 21 operates the vehicle and the engine based on detection information from various sensors. The situation is calculated and an output signal is supplied to the A / C-ECU 42.
Hereinafter, the operation and effect of the vehicle air conditioner according to the second embodiment of the present invention thus configured will be described.

FIG. 6 is a flowchart showing a control routine of air conditioning control in cooling use when the vehicle is stopped according to the second embodiment.
In the second embodiment, in addition to the navigation information of the navigation system 31 for the air conditioning control in the cooling use when the vehicle is stopped in the first embodiment, the vehicle stop is determined based on the operation information of the vehicle operation system 32. Differences from the first embodiment will be described below.

[Air conditioning control when using air conditioning when the vehicle is stopped]
As shown in FIG. 6, in step S40 ′, navigation information and operation information are received from the navigation system 31 and the vehicle operation system 32 via the ENG-ECU 21, and the process proceeds to step S41.
In step S41, it is determined whether or not the vehicle is stopped by a signal from the navigation information and the operation information. If the determination result is true (Yes) and the signal is stopped, the process proceeds to step S42. If the determination result is false (No) and the signal is not stopped, the process proceeds to step S43.

  In step S42, it is determined from the navigation information whether the signal stop time is equal to or longer than a predetermined stop time. If the determination result is true (Yes) and the signal stop time is equal to or longer than the predetermined signal stop time, the process proceeds to step S44. If the determination result is false (No) and the signal stop time is shorter than the predetermined signal stop time, the process proceeds to step S48, the compressor 11 is normally driven, and the process returns to step S10.

  In step S43, it is determined whether or not the vehicle is stopped due to waiting for a load or a break time from the operation information. If the determination result is true (Yes) and the vehicle is stopped due to waiting for a load or a break time, the process proceeds to step S44. If the determination result is false (No) and the vehicle is not stopped due to waiting for a load or resting time, the process proceeds to step S48, the compressor 11 is normally driven, and the process returns to step S10.

  In step S44, it is determined from the input information from the ENG-ECU 21 whether or not the cold storage state of the cold storage material 16 is greater than or equal to a predetermined cold storage state. If the determination result is true (Yes) and the cold storage state of the cold storage material 16 is equal to or greater than the predetermined cold storage state, the process proceeds to step S46, an idling stop signal is transmitted to the ENG-ECU 21 to stop idling, and the air passage switching door & The motor 17 is switched to use a cool storage cooler that blows air to the cool storage material 16 to cool and cool the air, and returns to step S10. If the determination result is false (No) and the cold storage state is less than the predetermined cold storage state, the process proceeds to step S48, the compressor 11 is normally driven, and the process returns to step S10.

Thus, according to the vehicle air conditioner according to the second embodiment of the present invention, the engine is idling stopped based on the vehicle operation information, and the compressor 11 is stopped based on the cold storage state of the cold storage material 16. The cool storage cooler using 16 is used.
Thereby, when the vehicle stops for a certain time or more, the engine can be stopped and the drive of the compressor 11 can be stopped, so that the fuel consumption can be further reduced.

Although the description of the embodiment of the invention is finished as above, the embodiment of the present invention is not limited to the embodiment.
For example, in the first and second embodiments, the air conditioning control when the cooling is not used and the cooling control when the vehicle is stopped are performed. However, these controls may be omitted. Even in this case, the compressor 11 can be stopped based on the cold storage state of the cold storage material 16, and the cold storage cooler using the cold storage material 16 can be used, thereby reducing fuel consumption.

DESCRIPTION OF SYMBOLS 1, 1 'Vehicle air conditioner 11 Compressor 14 Evaporator 15 Blower 16 Cold storage material 17 Air path switching door & motor (air path switching member)
18 Traveling wind inlet 21 ENG-ECU (vehicle traveling state detection unit)
31 navigation system 32 vehicle operation system 41 air conditioning operation unit 42 A / C-ECU (air conditioning control unit, cold storage state determination unit)
43 Outside air temperature sensor

Claims (4)

A refrigeration circuit composed of a compressor, a condenser, an expansion valve and an evaporator that operates as an auxiliary machine of an internal combustion engine for traveling on a vehicle, a blower that sends outside air or inside air to the evaporator, and cold air that is generated by passing outside air or inside air through the evaporator In the vehicle air conditioner, which has a cold storage material that performs cold storage by the vehicle, and can freely change the cooling capacity of the passenger compartment,
Vehicle running state detecting means for detecting the vehicle running state;
Cold storage state determination means for determining the cold storage state of the cold storage material;
An air passage switching member that switches part or all of the flow of outside air or inside air that has passed through the evaporator to the cold storage material side;
Air conditioning control means for controlling the drive of the compressor and the switching operation of the air passage switching member,
The air conditioning control means includes:
When the vehicle is in a running state from the detection result of the vehicle running state detecting means,
From the determination result of the cold storage state determination means, if the cold storage state of the cold storage material is less than a predetermined cold storage state and the traveling state is a no-load traveling state that does not depend on the internal combustion engine, the driving force of the compressor is increased. While performing the cold storage on the cold storage material as the cold storage material side the flow of air that has switched the air passage switching member and passed through the evaporator,
When the vehicle interior needs to be cooled and the cold storage state of the cold storage material is equal to or higher than a predetermined cold storage state based on the determination result of the cold storage state determination means, the compressor is stopped and the air passage switching member is switched. A vehicle air conditioner that performs cooling with the cold storage material with an air flow as the cold storage material side. The air conditioning control means includes
When the vehicle is in a running state from the detection result of the vehicle running state detecting means,
When the vehicle interior is not required to be cooled and the cold storage state of the cold storage material is greater than or equal to a predetermined cold storage state based on the determination result of the cold storage state determination means, the traveling state is an unloaded traveling state that does not depend on the internal combustion engine. The vehicle air conditioner according to claim 1, wherein the compressor is not operated. It has a traveling wind inlet that can introduce traveling wind as outside air in front of the vehicle,
The air conditioning control means includes
Furthermore, it controls the introduction switching of outside air and inside air and the operation of the blower,
When the vehicle interior needs to be cooled, if the vehicle speed detected by the vehicle running state detection means is equal to or higher than a predetermined vehicle speed, the running wind is introduced as outside air from the running wind introduction port and the blower is stopped. The vehicle air conditioner according to claim 1 or 2, characterized in that. The air conditioning control means includes
Furthermore, it measures the stop time of the vehicle and switches between operation and stop of the internal combustion engine,
When the vehicle stops from a detection result of the vehicle running state detecting means for a predetermined time or longer and is not in a running state,
When the vehicle interior needs to be cooled, and the cold storage state of the cold storage material is equal to or higher than a predetermined cold storage state, the internal combustion engine is stopped and the air passage switching member is switched to change the air flow to the cold storage material side. The vehicle air conditioner according to any one of claims 1 to 3, wherein cooling is performed using a material.

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