JP3303471B2 - Vehicle air conditioner control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for controlling an air conditioner for a vehicle so that the air conditioner in a vehicle compartment can be satisfactorily air-conditioned particularly at a high temperature to improve the occupant's sensation.

[0002]

2. Description of the Related Art In a conventional air conditioner for a vehicle, as disclosed in Japanese Utility Model Application Laid-Open No. 1-81105, the temperature of a vehicle compartment, the amount of solar radiation, the possibility of opening a ceiling, and the like are detected and their outputs are detected. Although the air flow is controlled according to the signal, it is difficult to rapidly reduce the vehicle air temperature by controlling the air flow when the vehicle interior temperature is particularly high.

Conventionally, an electronic control unit to which signals such as vehicle speed, engine cooling water temperature, and air conditioner refrigerant pressure are input controls the operation of a refrigerant condenser fan in response to an air conditioner operation command. If the occupant operates the air conditioner at the time of starting the engine, the refrigerant condenser fan is driven at a low speed until the temperature of the engine cooling water rises to about 95 ° C. in order to save power consumption and reduce noise. However, since the cooling performance of the refrigerant condenser is low, the temperature in the passenger compartment cannot be rapidly lowered, and it is difficult to eliminate the discomfort of the occupant.

[0004]

SUMMARY OF THE INVENTION The present invention is to reduce the vehicle interior temperature rapidly when the vehicle interior temperature is extremely high because the vehicle has been stopped for a long time in fine weather in summer. It is intended to immediately eliminate the discomfort of the occupant when the user gets into the vehicle.

[0005]

SUMMARY OF THE INVENTION Therefore, a vehicle air conditioner control device according to the present invention includes a vehicle engine start sensor, a vehicle interior temperature sensor, a refrigerant condenser fan drive circuit for an air conditioner, and a switch installed in the drive circuit. Having an engine start signal from the start sensor,
When the temperature detected by the vehicle interior temperature sensor is equal to or higher than a predetermined value, the switch is closed to drive the refrigerant condenser fan at a high speed.

A vehicle air conditioner control device according to the present invention is installed in a vehicle engine start sensor, a vehicle interior temperature sensor, an outside air temperature sensor and / or a solar radiation sensor, an air conditioner refrigerant condenser fan drive circuit, and the drive circuit. When the engine start signal from the start sensor is obtained from the start sensor and the detection values of the vehicle interior temperature sensor and the outside air temperature sensor and / or the solar radiation sensor are respectively equal to or greater than predetermined values, the switch is closed. The refrigerant condenser fan is configured to be driven at a high speed.

[0007]

In other words, when the engine is started and the temperature in the vehicle interior is equal to or higher than a predetermined value, a switch provided in the refrigerant condenser fan drive circuit for the air conditioner is closed, and the refrigerant condenser fan is driven at a high speed. As a result, the cooling performance of the air conditioner is increased from the beginning, so that the cooling performance of the air conditioner is immediately increased and sufficient cold air can be blown into the vehicle interior, so that the temperature in the vehicle interior can be rapidly lowered, and a high vehicle interior can be easily achieved. The discomfort of the occupant due to the temperature can be immediately eliminated.

[0008]

Embodiments of the present invention will be described below. The electronic control unit ECU mounted on the vehicle receives signals such as vehicle speed, engine coolant temperature, and air conditioner refrigerant pressure, and controls the operation of the refrigerant condenser fan based on the operation command of the air conditioner. An auto air conditioner controller 2 is installed in a drive circuit 1. The auto air conditioner controller 2 is connected to a start sensor 3, a vehicle interior temperature sensor 4, an outside air temperature sensor 5, and a solar radiation sensor 6 of a vehicle engine, and has a timer. The switch 7 is built in.

When the start signal of the vehicle engine is input from the start sensor 3, the auto air conditioner controller 2 detects that the temperature of the vehicle interior is 40 ° C.
When the above signal is input and a signal of the outside air temperature of 30 ° C. or more from the outside air temperature sensor 5 and / or a sunshine signal of a predetermined amount or more is input from the sunshine sensor 6, the switch 7 with the timer is closed and the refrigerant condenser is closed. The high-speed drive circuit 1 of the fan is configured to be closed, and after about 10 minutes, the switch 7 is opened by the operation of the timer, and the high-speed drive circuit 1 is opened.

[0010] Therefore, when the passenger enters the vehicle when the vehicle interior temperature is extremely high because the vehicle has been stopped for a long time on a sunny day in the summer, the engine is activated to activate the air conditioner. Since a start signal of the engine is input to the auto air conditioner controller 2 and a signal of a predetermined value or more is input to the auto air conditioner controller 2 from the vehicle interior temperature sensor 4, the outside air temperature sensor 5, and the solar radiation sensor 6, a switch with a timer is provided. 7 is closed, the high-speed drive circuit 1 of the refrigerant condenser fan is closed, and the high-speed operation of the refrigerant condenser fan enhances the cooling action in the refrigerant condenser from the beginning.
The cooling performance of the air conditioner immediately rises and relatively low-temperature cold air can be blown into the passenger compartment, which rapidly lowers the passenger compartment temperature. Pleasant feeling can be eliminated promptly, and the livability of the vehicle can be easily improved.

When about 10 minutes have passed since the switch 7 was closed, the timer is operated to open the switch 7 to open the high-speed drive circuit 1 so that normal control by the electronic control unit ECU is performed. Become.

In addition, as described above, when the temperature in the vehicle compartment or the outside air is relatively high, the number of revolutions is rapidly increased by the start of the engine, and there is little possibility that the power generation amount becomes insufficient. Since no large noise is generated by the high-speed driving of the condenser fan, the control of the refrigerant condenser fan does not cause any particular trouble.

The temperature, illuminance, etc., at which the vehicle interior temperature sensor, the outside air temperature sensor and the solar radiation sensor detect and operate the auto air conditioner controller, respectively, or the time limit of the switch with a timer are all mounted. Needless to say, it can be appropriately set according to the performance of the air conditioner, the type of vehicle, etc.
Even when the switch is closed when the temperature in the cabin, which has the greatest influence on the occupant's bodily sensation, is equal to or higher than the set value, the same operational effects as in the case of the above embodiment can be obtained.

[0014]

In the vehicle air conditioner control device according to the present invention, when the engine is started and the vehicle interior temperature is equal to or higher than a predetermined value, the refrigerant condenser fan is immediately driven at a high speed. As a result of being increased from the beginning, the cooling performance of the air conditioner rises immediately and sufficient cold air can be blown into the passenger compartment, making it possible to rapidly reduce the passenger compartment temperature, and to increase the occupant's temperature due to the high passenger compartment temperature. Discomfort can be immediately eliminated, and the livability of the vehicle can be easily improved.

[Brief description of the drawings]

FIG. 1 is a schematic layout diagram in an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Condenser fan high-speed drive circuit 2 Auto air conditioner controller 3 Start-up sensor 4 Car interior temperature sensor 5 Outside air temperature sensor 6 Solar radiation sensor 7 Switch with timer

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-31814 (JP, A) JP-A-60-183220 (JP, A) JP-A-57-30609 (JP, A) 42325 (JP, A) JP-A-59-93160 (JP, A) JP-A-62-110519 (JP, A) JP-A-2-45218 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60H 1/32

Claims (2)

(57) [Claims] An engine start sensor for a vehicle engine, a vehicle interior temperature sensor, a refrigerant condenser fan drive circuit for an air conditioner and a switch installed in the drive circuit, an engine start signal from the start sensor is obtained, and A vehicle air conditioner control device configured to close the switch and drive the refrigerant condenser fan at high speed when the temperature detected by the vehicle interior temperature sensor is equal to or higher than a predetermined value. 2. A starter sensor for a vehicle engine, a cabin temperature sensor, an outside air temperature sensor and / or a solar radiation sensor, a refrigerant condenser fan drive circuit for an air conditioner, and a switch installed in the drive circuit. When an engine start signal is obtained and the detection values of the vehicle interior temperature sensor and the outside air temperature sensor and / or the solar radiation sensor are respectively equal to or greater than predetermined values, the switch is closed and the refrigerant condenser fan is driven at a high speed. Vehicle air conditioner control device.