JPS59209907A - Control method of air conditioner for automobile - Google Patents

Abstract

PURPOSE:To avoid blowing a current directly against people aboard in time of starting, by blowing off only the current out of a defrost duct within the setting time from the starting, in case of an air conditioner which presets a setting mode and a setting temperature. CONSTITUTION:There are provided with an intake unit 1, a cooler unit 2 and a heater unit 3. When air cooling operation is started, an intake door 9 is selected to a position opening an inside air circulating port 6 and closing an outside air leading port 7. Likewise, a mix door 13, a floor door 17 and a vent door 18 are all selected to a position where cooled air passing through an evaporator 11 is blown to a car room only from a defrost duct 14 by detouring a heater core 12. Therefore, the cold air tries to cool the inside of the car room as early as possible but this cold air flows along the front glass from the defrost duct 14 so that the direct blowing of the cold air can be avoided hitting directly against people aboard inside the car room.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air conditioner for an automobile, and more particularly to a control method at the time of starting the air conditioner.

Automatic automotive air conditioners that have been used in recent years are
By simply setting the setting mode and temperature in advance, the indoor humidity will automatically be brought close to the set temperature in a short period of time. In other words, this auto-temperature-adjusting automotive air conditioner immediately starts cooling or heating operation based on information obtained from sensors when the air conditioner is started, so that a comfortable state can be obtained without manual operation. The air conditioner is controlled to the set mode and the temperature within the single room is adjusted to the set temperature.

A problem with the above-mentioned automatic air conditioner for automobiles is the gap between the distance between people and the temperature of the air blown out from the air conditioner.

For example, the humidity inside a vehicle during the midsummer day can easily reach 40 degrees Celsius or higher. On the other hand, the set temperature of the automobile air conditioner was set at 20℃.
If this is the case, the air conditioner for a car will perform cooling operation and the temperature of the cold air blown into the vehicle interior will be below 10°C, and if a person who was in the outside air at a temperature close to 30°C were directly exposed to this cold air, it would be more than cool. I feel rather uncomfortable. Moreover, there is a large difference in the set humidity between the inside of the car and the air conditioner, which rotates the fan at high speed to send out a large amount of cold air, which means that a large amount of cold air is blown out at once, causing discomfort for a relatively long time. may be accompanied by

In view of the above-mentioned points, the present invention has been made for the purpose of providing a control method for an automobile air conditioner that does not cause discomfort to people inside the vehicle at the time of startup. It is characterized in that wind is blown out only from the defrost duct within a certain period of time.

The present invention will be explained below with reference to embodiments shown in the drawings.

The figure shows an air conditioner for an automobile that implements the control method of the present invention, and this air conditioner for an automobile includes an intake unit 1, a cooler unit 2, and a heater unit 3. . Among these, the intake unit 1 includes a fan 5 driven by a motor 4, an inside air circulation port 6 into which the circulation flow into the vehicle interior flows, an outside air inflow lower into which outside air flows in, and an air or outside air inflow from the inside air circulation port 6. It is equipped with an outflow lower for sending out air from either the inside air circulation [16] from the lower or from both the outside air inflow lower and the outside air inflow lower by the fan 5. The air flowing in through the inflow lower is switched and controlled by the intake door 9.

The cooler unit 2 into which air from the intake unit 1 flows has an evaporator 11 in which refrigerant circulates through a refrigerant conduit constituting a cooling cycle system, and cools the air by exchanging heat with the air introduced by the intake unit. It is something to do.

Furthermore, the heater unit 3 includes a heater core 12 through which engine cold N1 water circulates in order to heat the cold air that has passed through the cooler unit 2, and a mix door 13 installed on the entire surface of the heater core 12. The cool air is heated appropriately by adjusting the opening of the duct, and mixed with the cold air that was bypassed without being heated. After reaching a predetermined temperature, various ducts are selected according to the selected mode and the air is distributed into the passenger compartment. It is something.

This duct has defrost 1 to duct 14. Floor duct 15. There are vent ducts 16, and each duct has a floor door 17. Install the vent door 17 (bu, Jlftil
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Next, the control method of the present invention using the above-mentioned automobile air conditioner will be explained.

As mentioned above, when the outside temperature exceeds 30'C and the set temperature is set to 20°C and the cooling operation is started, the intake door and inside air circulation port 6 are opened, and the outside air inlet lower is closed. Take the position and also mix door 13,
The floor 1ζ area 17 and the vent door 18 are connected to the solid line in the figure so that the cold air that has passed through the evaporator 11 is blown into the single room only from the defrost duct 14, bypassing the heater core 12 as shown by the arrow. taking a position.

Therefore, although it does not pass through the heater core 12, low-temperature cold air is blown into the vehicle interior to quickly bring the interior to the set temperature, but this cold air flows from the defrost duct 14 along the windshield (not shown). Since the occupants inside the vehicle are not directly exposed to cold air, they do not feel uncomfortable.

When the time set by the timer (not shown) has passed, the floor door 17 and the vent door 18 move to their normal positions determined by the mode lever, and cold air is supplied from the vent duct 16. By this time, the occupants have become accustomed to the low temperature to some extent, so there is no problem even if they are directly exposed to cold air.

As described above, according to this embodiment, when the automobile air conditioner is started, cold air is supplied only from the differential 14 to the differential 14, so that the occupants' bodies are gradually cooled down and comfortable without causing any discomfort. Become. It goes without saying that the present invention can be applied not only to the cooling mode but also to the heating mode.

As explained above, since the automotive air conditioner according to the present invention blows air only from the defrost duct within a certain set time after startup, there is no possibility that people inside the vehicle will feel uncomfortable when the vehicle is started. It has an excellent effect of allowing you to enjoy comfortable cooling or heating without any hassle.

BRIEF DESCRIPTION OF THE DRAWINGS The figure is an explanatory diagram showing an example of an air conditioner for an automobile that implements the control method according to the present invention. DESCRIPTION OF SYMBOLS 1... Intake unit, 2... Cooler unit, 3... Heater unit, 9... Intake unit, 11... Evaporator, 12... Heater core, 13... Mix door, 14...・Defrost duct, 15...Floor duct, 16...Pen 1 ~ duct [~, 17...Floor door, 18...
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Claims (1)

[Claims] A control method for an automotive air conditioner, characterized in that the automotive air conditioner has a set mode and a set temperature, and blows air only from a defrost duct within a certain set time after startup.