JPS6325122A - Air conditioner for automobile - Google Patents

Abstract

PURPOSE:To lessen an unpleasant feeling through informing the condition of cooling or heating by providing a command means holding at the maximum cooling or heating capacity and its indicating means when a target temperature by a temperature setting means has reached outside the scope of a predetermined temperature. CONSTITUTION:A setting temperature descends when the down-switch 151b of a temperature setting switch 151 is pushed. Now, when a setting temperature indicating portion 152 indicates 18, the down-switch 151b is pushed and a setting temperature equivalent to 17 is reached, then the indication is made to be CC and the maximum cooling condition is fixed. Similarly, when the indicating portion 152 indicates 32, an up-switch 151a is pushed, and a setting temperature equivalent to 33 is reached, then the indication is made to be HH and the maximum heating condition is fixed. By this, an occupant's unpleasant feeling against the sudden increase of an air quantity and a noise from an air conditioner is lessened, since the occupant can be informed of being retained at the maximum cooling or heating capacity.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner for an automobile (car air conditioner).

[Conventional technology]

A conventional air conditioner for an automobile includes a temperature setting means for setting a target temperature in the vehicle interior, and controls the actual temperature in the vehicle interior to match the target temperature. Furthermore, some vehicles are provided with a command means for fixing the operating state of the automobile air conditioner to the maximum cooling state or the maximum heating state.

Examples of this command means include a switch operated by a passenger, and a command that issues a command to set the maximum cooling state or maximum heating state when the target temperature of the target temperature setting means falls outside a predetermined range.

[Problem that the invention seeks to solve]

For such automotive air conditioners, is the current operating state of the automotive air conditioner fixed?
The occupants may not be able to determine whether the operating state is being adjusted according to the target temperature.

Ta.

For example, when the difference between the target temperature and the actual temperature is very large, the automotive air conditioner is set to the maximum heating state or maximum cooling state by the temperature control means, and the difference from when it is fixed by the above-mentioned command means is I don't know.

Furthermore, as the temperature setting means is operated, when a certain target temperature is reached, the maximum cooling state or maximum heating state is suddenly set by the command means, which causes a rapid increase in air volume and noise, which can be uncomfortable for the passengers. Ta.

In view of the above-mentioned problems, the present invention reduces the discomfort of the occupants by notifying the occupants when the operating state of the automobile air conditioner is maintained at the maximum cooling state or the maximum heating state. The purpose is to reduce

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention includes a temperature setting means for setting a target temperature for air conditioning in a vehicle interior, and a device for adjusting the temperature in the vehicle interior to match the target temperature within a predetermined temperature range. temperature control means for adjusting heating and cooling capacity; maximum capacity command means for maintaining the maximum cooling capacity or heating capacity when the target temperature falls outside the predetermined temperature range; A technical means is adopted in which a display means is provided to indicate that the

[Effect]

The display means displays this when the automobile air conditioner is maintained at the maximum heating state or the maximum cooling state. The operating state of the automotive air conditioner can be determined to be maintained at the maximum cooling capacity or maximum heating state by the target temperature being outside the predetermined temperature range of the temperature control means, and also by the command from the maximum capacity command means. Can be judged.

This notifies the occupants of the current automotive air conditioner whether its cooling and heating capacity is being adjusted by the temperature control means, or whether it is being maintained at its maximum cooling capacity or maximum heating capacity by the maximum capacity commanding means. .

〔Effect of the invention〕

Passengers can be informed that the current automotive air conditioner is maintained at its maximum cooling capacity or maximum heating capacity. In other words, the occupants can know that the temperature is not being adjusted.

This reduces the discomfort of the occupants and provides a more comfortable cabin environment.

〔Example〕

A car air conditioner according to a first embodiment of the present invention will be explained based on the drawings.

First, the configuration of this first embodiment will be explained based on the drawings.

FIG. 2 is a schematic configuration diagram of a car air conditioner.

A blower fan 5 is provided downstream of the inside/outside air switching damper 4 that switches between the inside air intake port 2 and the outside air intake port 3, and the blower fan 5 is driven by a motor 5a. An evaporator 6 is provided downstream of the blower fan 5 to cool all the passing air. Further downstream, a heater core 7 is provided, and an air mix damper 9 adjusts the ratio of air passing through the heater core 7 to air passing through the bypass passage 8, thereby adjusting the temperature of the air. The temperature-adjusted air is delivered to the vehicle interior 13 from the outlet selected by the outlet switching damper 12 that switches between the vent outlet 10 and the heat outlet 11.
is blown out. 14 is a control device consisting of a microcomputer. This control device 14 includes a control panel 16, an internal temperature sensor 17, and a water temperature sensor 1 for the engine 7a.
8. Evaporator rear temperature sensor 19, outside temperature sensor 2
0, and potentiometer 9 of air mix damper 9
The signal b is input.

This control device 14 includes a motor 4as of the inside/outside air switching damper 4, a motor 5a of the blower fan 5, and a compressor 6.
It controls the electromagnetic clutch 6b of a, the servo motor 9a of the air mix damper 9, the water valve 7b, and the servo motor 12a of the outlet switching damper.

FIG. 3 is a plan view of the control panel of the car air conditioner according to the first embodiment. This car air conditioner is called an automatic air conditioner, and by setting a target temperature, a microcomputer automatically controls the car air conditioner to match the temperature inside the vehicle to the set temperature.

The control panel 15 includes a temperature setting switch 151.
, set temperature display section 152, blowout mode changeover switch 15
3. An inside/outside air mode changeover switch 154, an auto switch 155, an air conditioner switch 156, and a blower fan changeover switch 157 are provided. When the rising switch 151a of the temperature setting switch 151 is pressed, the set temperature increases in 1 (t') increments, and when the descending switch 151b is pressed, the set temperature decreases in 1 (°C) increments. and,
This set temperature is counted in the range corresponding to 17 (°C) to 33 ('C), and can be set in the range of 18 ('C) to 32 ('C). It consists of a 7-segment fluorescent display tube.

Next, the operation of this embodiment will be explained. In this embodiment, when the set temperature display section 152 is 18, when the lowering switch 151b is further pressed and the set temperature corresponding to 17 is reached, the display becomes CC and the maximum cooling state is fixed. Further, at the time of 32, when the rise switch 151a is further pressed and the set temperature corresponding to 33 is reached, the display becomes HH and the maximum heating state is fixed. Such a display is shown in FIG.

A is a two-digit 7-segment HH display.

B is a display of set temperatures from 18 to 32.

C is a CC display with 7 segments of 2 digits.

FIG. 5 shows a flowchart showing the operation of the microcomputer for making such a display. Step 5
At step 01, a setting value corresponding to the temperature set by the temperature setting switch 51 is read. In step 502, it is determined whether this set value corresponds to MaxCool. That is, if the set value corresponds to 17 ("C)," the process branches to "Yes".

In step 503, the set temperature display device 152 is caused to display CC. In step 504, it is determined whether the set value read in step 501 corresponds to MaxHot. That is, if the set value corresponds to 33 ("C)", the process branches to "Yes".

In step 505, the set temperature display device 152 is caused to display HH. In step 506, 18 ('C) to 32 (''C) corresponding to the setting values read in step 501 are selected.
Displays the set temperature in the range.

With the configuration and operation of this embodiment, the driver and passengers can accurately know the operating state of the air conditioner.

Further, there is a slight delay in switching the air conditioner to the maximum heating state or the maximum cooling state because there is a delay in the operation of the damper and motor.

Therefore, since the set temperature display becomes HH or CC before the air conditioner reaches its maximum heating state or maximum cooling state, the occupant can predict a sudden increase in the air volume or noise of the air conditioner.

FIG. 6 shows a control panel of a second embodiment to which the present invention is applied.

In this second embodiment, indicator lamp 158.15
9, and an indicator lamp 158 is lit when the maximum heating state is fixed.

Note that the determination of the maximum heating state or maximum cooling state is the same as in the first embodiment described above.

In the embodiment described above, the set temperature is set using a 2-digit 7-segment 1-LED;
It may be three digits with an additional digit, or a liquid crystal display may be used to display predetermined figures or characters.

Furthermore, a maximum heating command switch and a maximum cooling command switch may be provided, and when these are operated, a display corresponding to the maximum heating state or the maximum cooling state may be displayed.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the present invention, and FIG. 2 is a block diagram of the present invention. 3 is a front view of the control panel of the first embodiment, FIG. 4 is an example of a two-digit 7-segment display, and FIG. 5 is a flowchart for displaying the set temperature. FIG. 6 is a front view of the control panel of the second embodiment. 1...Automotive air conditioner, 5...Prower fan. 6... Evaporator, 7... Heater core, 9...
Air mix damper, 14...control device, 15...
Control panel, 151...temperature setting switch,
152... Set temperature display section. Representative Patent Attorney Takashi Okabe Figure 1 II: I Figure 3 Figure 2 Figure 4 Figure 5 1D Figure 6

Claims (1)

[Scope of Claims] Temperature setting means for setting a target temperature for air conditioning in a vehicle interior; and temperature setting means for adjusting heating and cooling capacity so that the temperature in the vehicle interior matches the target temperature within a predetermined temperature range. adjustment means; maximum capacity command means for maintaining the maximum cooling capacity or maximum heating capacity when the target temperature falls outside the predetermined temperature range; and displaying that the maximum cooling capacity or the maximum heating capacity is maintained. An air conditioner for an automobile, comprising: a display means.