JPS61278414A - Air conditioner for automobile - Google Patents

Abstract

PURPOSE:To prevent heating from being suspended in a severly cold winter by moving a mixing damper forcively to the hot side when a trouble is found in either an air mixing damper position detecting device or a drive section of a control device concerning the control of the air mixing damper. CONSTITUTION:A control signal is outputted from an arithmatic unit 11 of a control device 10 based on information from both a temperature setting device 1 and an air mixing damper position detecting device 2 in a device as referred to the titled. This allows a drive section 12 to output a drive signal to an actuator 3 which controls the opening of an air mixing damper 4. In this configuration, the control device 10 is provided with a trouble detecting section 13. When a trouble is detected by the said detecting section 13 in both the drive section 12 and the said position detecting device 2, a trouble detection signal is outputted to an emergency drive section 14. This allows the emergency drive section 14 to keep outputting a drive signal so as to drive the said damper 4 to the hot side for the period of time required for the damper 4 to move to the hot side from the cool side.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an air conditioner for an automobile.〇Prior art A conventional air conditioner for an automobile is disclosed in Japanese Patent Publication No. 58-900, for example.
As shown in Publication No. 7, it has a configuration as shown in FIG.

That is, a control signal is output from the calculation unit 11 based on information from the temperature setting device 1 and the air mix damper position detection device 2. Based on this control signal, a drive signal is output from the drive unit 12 to the actuator 3, and the air mix damper 4 is driven, and after adjusting and mixing the amount of air flowing through the heater core 5 and the amount of air bypassing the heater core 5, It's blowing out into the room.

Problems to be Solved by the Invention However, in the above configuration, if the drive section 12 or the air mix damper position detection device 2 fails, the air mix damper 4 cannot be normally controlled. The lack of heating during severe winters is extremely inconvenient for the passengers and poses health management problems.

Therefore, the present invention provides an air conditioner for an automobile in which even if the drive unit 12 and the air mix damper position detection device 2 are out of order, heating will not be performed during severe winters and the health of the occupants will not be affected. be.

Means for Solving the Problems In order to solve the above-mentioned problems, the automotive air conditioner of the present invention includes an air mix damper that adjusts the blowout temperature in the vehicle interior, an actuator that drives the air mix damper, and an air conditioner that controls the air. an air mix damper position detection device that detects the position of the mix damper; a temperature setting device; a calculation unit that outputs a control signal for the air mix damper based on information from the air mix damper position detection device and the temperature setting device; and a control signal. a control device having a drive section that outputs a drive signal to the actuator; the control device includes a failure detection section that detects a failure of the air mix damper position detection device and the drive section; and a failure detection section of the failure detection section. An emergency drive unit is provided which outputs a drive signal for driving the air mix damper to the hot side to the actuator for at least the time required for the air mix damper to move from the cool side to the hot side.

Effect of the Invention The present invention has the above-described configuration, detects a failure in the drive unit of the air mix damper position detection device and the control device, and drives the air mix damper at least during the time it takes to move from the cool side to the hot side. This eliminates problems such as interruptions in heating at times.

Example Hereinafter, an automotive air conditioner according to an example of the present invention will be described.
This will be explained with reference to FIG. Here, the same numbers as those in the conventional example are given the same numbers, and the description thereof will be omitted.

The failure detection section 13 outputs a failure detection signal to the emergency drive section 14 to detect a failure of the drive section 12 and the air mix damper 4. When the emergency drive unit 171 receives a failure detection signal, it outputs a drive signal for driving the mix damper 4 toward the hot side for at least the time required for the mix damper 4 to move from the cool side to the hot side.

As described above, by providing the failure detection unit 13 and the emergency drive unit 14 in the control device 10a, even if a failure occurs in the drive unit 12 and the air mix damper 2, a situation where heating is not performed during severe winter can be avoided. can.

Effects of the Invention As described above, the EA of the present invention includes an air mix damper that adjusts the blowing temperature in the vehicle interior, an actuator that drives the air mix damper, and an air mix damper position detection device that detects the position of the air mix damper. a temperature setting device; a calculation unit that outputs a control signal for the air mix damper based on information from the air mix damper position detection device and the temperature setting device; and a drive unit that outputs a drive signal to the actuator based on the control signal; an air mix damper position detection device; a failure detection unit that detects a failure of the drive unit; By installing a control device with an emergency drive unit that outputs the time required for the mix damper to move from the cool side to the hot side, it is possible to prevent situations in which heating is not performed during severe winters, resulting in highly reliable automotive air conditioning. It is possible to realize the device.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an automobile air conditioner according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional automobile air conditioner. 1... Temperature setting device, 2... Air mix damper position detection device, 3... Actuator, 4... Old air mix damper, 5... Heater core, 1o. 10 &... control device, 11... calculation section,
12... Drive unit, 13... Failure detection unit, 14... Emergency drive unit.

Claims (1)

[Claims] An air mix damper that adjusts the air outlet temperature inside the vehicle,
an actuator that drives the air mix damper;
an air mix damper position detection device that detects the position of the air mix damper; a temperature setting device; and a calculation unit that outputs a control signal for the air mix damper based on information from the air mix damper position detection device and the temperature setting device. a control device having a drive unit that outputs a drive signal to the actuator in response to a control signal; the control device includes a failure detection unit that detects a failure of the air mix damper position detection device and the drive unit; An air conditioner for an automobile, comprising an emergency drive section that outputs a drive signal for driving the air mix damper to the hot side to the actuator for at least the time required for the air mix damper to move from the cool side to the hot side. .