JPS6317643B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air conditioner for a vehicle that changes the temperature inside a vehicle according to the clothing mode of the occupant with respect to a set temperature set by the occupant.

Conventional vehicle air conditioners maintain the room temperature at the set temperature by controlling the opening degree of the air mix door according to the temperature difference between the set temperature set by the passenger and the room temperature detected by the inside air sensor. That's what I do. Figure 1 shows an example of this control, in which the opening degree of the air mix door changes from 0% (full cool) to 100% (full hot) in the range where the temperature difference t (set temperature - room temperature) on the horizontal axis changes from -5°C to +5°C. ) (Japanese Unexamined Patent Publication No. 55-36156).

However, according to this vehicle air conditioner, regardless of the clothing mode, such as whether the occupant is wearing thick clothes (for example, a suit) or light clothes (for example, a short-sleeved shirt), Since the opening of the air mix door is controlled only according to the temperature difference between You may feel cold and vice versa.

In view of the above, the present invention has been developed to prevent differences in comfort depending on the clothing mode, such as when wearing thick clothes and when wearing light clothes. To provide an air conditioner for a vehicle that changes temperature according to the clothing mode of an occupant.

The vehicle air conditioner of the present invention will be explained in detail below with reference to FIGS. 2 to 4.

FIG. 2 shows an embodiment of the present invention, which includes a series circuit consisting of variable resistors 1 and 2 between the positive and negative terminals of a power supply, an inside air sensor 3 for detecting the temperature inside the vehicle, and correction means 4, a fixed resistor 5, and a temperature setting. A resistor bridge circuit is constructed by connecting the series circuit of the variable resistor 6 of the device in parallel. Then, the voltage Va at one voltage division point a and the voltage Vb at the other voltage division point b are respectively input to a comparator 7 which is an amplifier. In this bridge circuit, the variable resistor 1 is a resistor for adjusting the bridge balance, and the variable resistor 2 changes its resistance value in conjunction with the opening degree of the air mix door in the air mix door opening control circuit 8. This is a variable resistor for feedback whose resistance value increases according to the degree of opening toward the hot side and decreases according to the degree of opening toward the cool side. The inside air sensor 3 is a temperature detector for detecting the room temperature provided in the instrument section, and uses a thermistor or the like having a characteristic that the resistance value decreases as the temperature rises.

The correction means 4 is for substantially changing the detected temperature characteristic of the inside air sensor 3 according to the clothing mode, and includes a heater operating switch 9, a cooler operating switch 10, and a resistor 11 on the opposite side of the switch 9. Terminal c, a thick mode terminal D having a resistor 12, and a resistor 13 on the opposite side of the switch 10.
It consists of a thin mode terminal e having a resistor 14, and a thick mode terminal f having a resistor 14.

Resistors 11, 12, 13, 14 of this correction means 4
The relationship between the resistance values R ₁₁ , R ₁₂ , R ₁₃ , and R ₁₄ is R ₁₁ < R ₁₂ ,
R ₁₃ < R ₁₄ .

The variable resistor 6 is a resistance of a temperature setting device that sets the indoor temperature, and the higher the set temperature, the higher the resistance value, and the lower the set temperature, the lower the resistance value.

The comparator 7 compares the voltage Va at point a and the voltage Vb at point b, and controls the air mix door control circuit 8 to operate the air mix door of the temperature adjustment device so that the potential difference becomes zero. let Incidentally, the amplification factor of the comparator 7 is determined by the resistance values of the resistors 15 and 16.

In the above configuration, the operation will be explained as follows.

(1) During heating After turning on switch 9, turn on terminal c when wearing light clothes and turn on terminal d when wearing thick clothes depending on the clothing mode. The air mix door opening degree control circuit 8 inputs the signal from the comparator 7 and connects terminals a and b.
variable resistor 2 so that the voltages Va and Vb of
Adjust. Since the resistance value of the resistor 12 is greater than the resistance value of the resistor 11, if the resistance value of the temperature setting resistor 6 is the same, the opening degree of the air mix door will be greater when the person is wearing light clothes than when the person is wearing thick clothes, and the temperature inside the vehicle will increase. can be controlled to a high degree. Third
The figure shows this state, where the solid line shows thick clothes and the dotted line shows light clothes.

(2) During cooling After turning on the switch 10, depending on the clothing mode, if the person is wearing light clothes, turn on the terminal e, and if the person is wearing thick clothes, turn on the terminal f. The variable resistor 2 is adjusted by the air mix door opening control circuit 8. Since the resistance value of the resistor 14 is greater than the resistance value of the resistor 13, the degree of opening of the air mix door is smaller when the driver is wearing heavy clothing than when the driver is wearing light clothing, so that the temperature inside the vehicle can be controlled to be lower. FIG. 4 shows this state, where the solid line shows thick clothes and the dotted line shows light clothes.

As explained above, according to the vehicle air conditioner according to the present invention, the temperature inside the vehicle is changed according to the clothing mode of the occupant relative to the set temperature. This can ensure that there is no difference in comfort.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional method for controlling the opening degree of an air mix door, and FIG. 2 is an explanatory diagram showing an embodiment of the present invention. 3 and 4 show a method of controlling the opening degree of the air mix door according to the present invention, with FIG. 3 showing the case during heating, and FIG. 4 showing the case during cooling. Explanation of symbols, 2... Air mix door opening control resistor, 3... Inside air sensor, 4... Clothes mode signal output circuit, 6... Set temperature signal output circuit, 7...
...Differential amplifier, 8...Air mix door opening control circuit.

Claims (1)

[Scope of Claims] 1. A circuit that outputs a set temperature signal according to a preset temperature, a circuit that outputs a vehicle interior temperature signal that corresponds to the temperature inside the vehicle, and a clothing mode that corresponds to the passenger's clothing mode. a circuit that outputs a signal; inputting the set temperature signal, the vehicle interior temperature signal, and the clothing mode signal; and adjusting the temperature difference between the set temperature and the vehicle interior temperature according to a value increased or decreased according to the clothing mode. 1. A vehicle air conditioner comprising: a control circuit that outputs a control signal; and means for inputting the control signal to change the temperature of air discharged into a vehicle interior. 2. The vehicle air conditioner according to claim 1, wherein the means for changing the temperature of the air discharged into the vehicle interior is configured to input the control signal to control the opening degree of the air mix door.