JPS62110518A - Air conditioner for automobile - Google Patents

Abstract

PURPOSE:To keep off the worsening of a feeling of air-cooling comfortableness when a window is opened as well as to secure such air conditioning that is comfortable and excellent in efficiency, by compensating the setting temperature, operating a compressor on or off, to be lowish when the window is opened. CONSTITUTION:An operational part 1 in a control unit detects outside air temperature and room temperature from an outside air sensor 2 and a room sensor 3, and calculates the setting temperature operating a compressor on or off. In addition, a compressor control part 4 compares the setting temperature calculated at the operational part 1 with the evaporator temperature detected by an evaporation sensor 5, and when this evaporator temperature is higher than the setting temperature, by way of example, an electromagnetic clutch 6 is energized with current, operating the compressor 7. In the above-mentioned constitution, a setting temperature compensator 8 is installed in the control unit is addition, and each output of the operational part 1 and a window on-off detector 9 is inputted into this compensator. Then, when a window is opened, the setting temperature is made lower than at a time when it is closed.

Description

[Detailed description of the invention] industrial use alter ego The present invention relates to an air conditioner for an automobile.

BACKGROUND OF THE INVENTION In recent years, control has been implemented to reduce the operating rate of the compressor and perform air conditioning with high efficiency by calculating the set temperature at which the compressor is turned on and off from outside air temperature, indoor temperature, etc.

Conventional air conditioners for automobiles of this type were developed by, for example,
There is one as shown in Japanese Patent No.-6808.

FIG. 3 is a block diagram of a conventional automobile air conditioner. A calculation unit 1 detects outside air temperature and indoor temperature from an outside air sensor 2 and an indoor sensor 3, and calculates a set temperature for turning on and off the compressor. For example, if the outside temperature is high, the set temperature is lowered. The compressor control unit 4 compares the set temperature calculated by the calculation unit 1 and the evaporator temperature detected by the evaporator sensor 5, and if the evaporator temperature is higher than the set temperature, energizes the electromagnetic clutch 6 to operate the compressor 7. If the temperature of the evaporator is lower than the set temperature, the electromagnetic clutch 6 is not energized and the compressor 7 is stopped.

Problems to be Solved by the Invention However, with the above configuration, when the window is opened and warm air comes in, the set temperature does not change until the indoor temperature rises, resulting in a poor cooling feeling.・Efficient air conditioning is not performed.

Therefore, the present invention prevents the indoor temperature from rising even when the window is opened.
The present invention provides an automotive air conditioner that provides comfortable and efficient air conditioning.

Means for Solving the Problems In order to solve the above problems, the automotive air conditioner of the present invention includes a window opening/closing detection device for detecting the opening and closing of a window, an evaporator sensor for detecting the temperature of the evaporator, and an air conditioner for detecting the outside air temperature and indoor temperature. A calculation unit that calculates a set temperature for turning on and off the compressor based on information such as temperature, and compares the evaporator temperature detected by the evaporator sensor with the set temperature, and turns off the compressor if the evaporator temperature is lower than the set temperature. and a control device having a compressor control section that turns on the compressor if the temperature is high, and when the window opening/closing detection device detects that the window is open, the control device lowers the set temperature. A set temperature correction section is provided to adjust the temperature.

Effect: With the above configuration, the present invention fully detects that the window is opened and lowers the set temperature for turning on and off the compressor, so that even if the window is opened, the cooling feeling does not deteriorate and the air conditioner is comfortable. This will provide efficient air conditioning.

Example Hereinafter, an automotive air conditioner according to an example of the present invention will be described.
This will be explained with reference to the drawings.

FIG. 1 is a circuit diagram showing one embodiment of the present invention, and FIG.
The same parts as in the figures are represented by the same symbols, and their explanations will be omitted.

1 differs from FIG. 3 in that the output of the calculation section 1 is input to the set temperature correction section 8, and the output of the set temperature correction section 8 is input to the compressor control section 4. Information on window opening/closing is input to the set temperature correcting unit 8 by a window opening/closing detection device 9 .

FIG. 2 is a flowchart of the control of the set temperature correction section 8. Assuming that the set temperature TS is output from the calculation unit 1,
The set temperature correction unit 8 determines whether the window is open based on the input from the window opening/closing detection device 9. If the corrected set temperature output from the set temperature correction section 8 is TH, then TH=TS when the window is closed. If the window is open and the amendment is TM, then TH=TS-TM. That is, the set temperature is lower by TM than when the window is closed.

Effects of the Invention As described above, the present invention provides a control device with a set temperature correction unit that lowers the set temperature for turning on and off the compressor when the window is open, thereby improving the feeling of cooling even when the window is open. It won't get worse, and the air conditioning will be comfortable and efficient.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an automobile air conditioner showing an embodiment of the present invention, Fig. 2 is a flowchart showing the control contents of the set temperature correction section of the interior d, and Fig. 3 is a block diagram of a conventional automobile air conditioner. It is a block diagram. 1...Calculation unit, 2...Outside air sensor, 3
... Indoor sensor, 4 ... Compressor control unit, 5 ... Eva sensor, 6 ... Electromagnetic clutch, 7 ... Compressor, 8. ...
... Set temperature correction unit, 9... Window opening/closing detection device.

Claims (1)

[Claims] a window opening/closing detection device that detects the opening and closing of a window; an evaporator sensor that detects the temperature of the evaporator; a calculation unit that calculates a set temperature for turning on and off the compressor based on information on the detected temperature; and a evaporator temperature detected by the evaporator sensor. and the set temperature, and if the temperature of the evaporator is lower than the set temperature, the compressor is turned off, and if it is higher than the set temperature, the compressor is turned on. An air conditioner for an automobile, comprising a set temperature correction section that lowers the set temperature when the device detects that a window is in an open state.