JP2707934B2 - Vehicle air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner having a control device for controlling a cooler unit and a heater unit in a vehicle such as a bus.

[0002]

2. Description of the Related Art In a conventional bus vehicle, as shown in FIG. 3, a cooler unit 1 and a heater unit 2 are independently installed, and an outlet 3 of the cooler unit 1 is provided on a ceiling portion and a heater unit 2 of the heater unit 2 is provided. The outlet 4 is located near the seat bottom. Conventionally, the cooler unit 1 and the heater unit 2 are controlled independently of each other. In the case of an auto cooler or an auto heater, although each unit is automated, the cooler unit 1 and the heater unit 2
Are collectively controlled independently of each other by the control device 5 shown in FIG.

The control device 5 includes a room temperature sensor 6 for detecting the room temperature inside the vehicle, an outside temperature sensor 7 for detecting the temperature outside the vehicle, and a water temperature sensor 8 for detecting the temperature of the cooling water for the engine.
And are connected. A temperature setter 10 having a display unit 11 in which a set temperature in the vehicle compartment is input and a temperature value is digitally displayed by a liquid crystal or the like is provided substantially at the center of the control device 5. The controller 5 drives the cooler unit 1 and the heater unit 2 according to the set temperature of the temperature setter 10 to control the interior of the vehicle to the set temperature.

[0004] That is, a relay box 12 is connected to the control device 5, and a plurality of cooler fan motors 13, a plurality of heater fan motors 14, a compressor 15, a damper motor 16 and the like are connected to the relay box 12. According to a control command from the device 5, the respective contacts of the relay box 12 are connected, and the respective devices are driven.

The controller 5 includes a refrigerant pressure switch (high pressure) 17 and a refrigerant pressure switch (low pressure) 1.
8 are connected. The pressure of the refrigerant can be adjusted by turning these pressure switches 17 and 18 on and off.

An operation unit 20 is provided on both sides of the display unit 11 of the control device 5. The operation unit 20 is provided with an auto button (not shown). When the auto button is pressed, various conditions such as a temperature detected by each of the sensors 6, 7, and 8 connected to the control device 5 and a pressure of the refrigerant are detected. Then, automatic air-conditioning control is performed so as to maintain the vehicle interior temperature at the set temperature input to the temperature setting device 10.

A button switch (not shown) for manually adjusting the air flow according to the driver's preference, a button switch for specifying an outlet position, a button switch for inputting a set temperature, and the like are provided.

By operating the switches of the operation unit 20, the cooler unit 1 and the heater unit 2 are controlled, and the cooler fan motor 13, the heater fan motor 14, and the like are driven.

[0009]

However, in the air conditioner for a vehicle described above, the cooler unit 1 and the heater unit 2 are arranged independently, and the cooler unit is controlled by the control device 5 according to the temperature set in the temperature setter 10. 1 or a control command is issued to the heater unit 2 to drive each cooler fan motor 13 or heater fan motor 14.

However, the temperature setting must be set when checking the system of the control device 5, and the driver or other occupant directly checks the air outlet position and air volume at each temperature setting. We had to check the operation by putting our hands on the exits 3 and 4.

Further, in the system check of the control device 5 when the outside air temperature is low, the cooler unit 1 may not operate in some cases, and it is necessary to check the locations of the outlets and the air volume by touching the outlets 3 and 4. there were.

The present invention has been made in view of the above circumstances. It is an object of the present invention to display an image of an outlet portion corresponding to each set temperature in a control device and an air volume of the outlet. It is another object of the present invention to provide a vehicle air conditioner capable of confirming operation.

[0013]

In order to achieve the above object, a vehicle air conditioner according to the present invention is provided with a cooler unit having an air outlet at an upper part of a vehicle interior and a heater having an air outlet at a lower part of the vehicle interior. A unit is provided, including a sensor for detecting the room temperature in the vehicle compartment, including a sensor for detecting the temperature outside the vehicle compartment, and including a sensor for detecting the temperature of the cooling water of the engine,
A temperature setting device for inputting and displaying a set temperature in the vehicle compartment is provided, and a control device for collectively controlling the cooler unit and the heater unit based on the detected temperature of each sensor and the temperature set value of the temperature setting device is provided, A system check that automatically raises the temperature setting from a low temperature to a high temperature in a fixed temperature step in the above controller, and displays the outlet location and the air volume of the outlet for the control command in each temperature step on the display of the temperature setting device. Means were provided.

[0014]

According to the vehicle air conditioner having the above-mentioned structure, when the system check means of the control device is operated, first, the temperature is displayed on the display unit without the occupant setting the temperature. The displayed temperature is automatically stepped up from a lower temperature to a higher temperature. At this time, the location of the outlet at each temperature step and the amount of air blown out of the outlet are displayed as an image on the display of the temperature setting device.

After confirming the drive of the cooler unit and the heater unit at each set temperature, the location of the outlet, and the amount of blown air, the optimum set temperature is input and the control device is driven, so that the occupant can directly blow by hand. There is no need to place a hand on the outlet to check the outlet location and air volume.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. The same components as those described in the related art are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 1 shows an air conditioner control unit 30 as a control device. At the approximate center of the air conditioner control unit 30, there is provided a temperature setter 32 having a display unit 31 for inputting a set temperature in the vehicle compartment and digitally displaying a temperature value by a liquid crystal or the like.

The air conditioner control unit 30 is provided with an air conditioner self-diagnosis device 35 as system check means having a system check function.

That is, the display section 31 is made of a liquid crystal or the like, and displays a set temperature or a temperature detected by each of the sensors 6, 7, and 8, a temperature display section 36, and an outline of a bus. And a blowout amount display portion 38 provided on both sides of the blowout position display portion 37 and showing blowout amounts blown out from the front side and the rear side. ing.

The temperature display section 36 displays a set temperature, a vehicle interior temperature, a vehicle exterior temperature, and a coolant temperature by one button operation. In addition, the balloon location display section 3
In 7, the outlet location and the outlet direction are indicated by arrows on the display unit 31. An arrow 37a displayed at the center of the bus of the outlet location display section 37 indicates whether internal air circulation or external air is introduced.

The blowout amount display section 38 displays the airflow at the front side in three stages: small, medium, and large, and the airflow at the rear side is extremely small, small, medium, and large. The display area of the display unit 31 is formed to be larger as the outlet air volume increases.

The operation unit 40 of the temperature setting unit 32 is provided with an auto button 41 as a switch for automatic air conditioning control and a check button 42 as a switch for confirming air conditioning. By simultaneously pressing these buttons 41 and 42, the air conditioner self-diagnosis device 35 is driven.

Therefore, when the auto button 41 and the check button 42 are pressed simultaneously, the air conditioner self-diagnosis device 35 is operated, and the temperature display section 36 of the display section 31 is displayed without the occupant setting the temperature. For example, the temperature is automatically displayed in steps of 1 ° C. automatically from 18 ° C. to 32 ° C., and the temperature is continuously displayed.

Further, a temperature display section 36 of 18 ° C. to 32 ° C.
In accordance with each of the display temperatures, the blowout point display section 37 of the display section 31 and the blowout amount display section 38 are displayed. In this way, while the occupant is in the driver's seat, it is possible to confirm the operation (system check) of the outlet position with respect to the set temperature and the air flow rate of the outlet. There is no need to check the exit location and air volume.

The occupant confirms the mechanical operation of motors such as the cooler fan motor 13 and the heater fan motor 14 in response to each control command of the air conditioner control unit 30.

The air conditioner self-diagnosis device 35 includes:
At the same time, the above sensors 6, 7, 8 and pressure switches 17, 1
The switch relation of No. 8 can be checked. That is, by pressing a sensor operation confirmation button (not shown), the temperature detected by each sensor 6, 7, 8 is displayed on the temperature display section 36,
If the detection by 7 and 8 is normal, for example, "OK" is displayed on the temperature display section 36 of the display section 31, and if abnormal, the abnormal portion or abnormal state is displayed by a predetermined error code.

[0027]

The present invention has been configured as described above.
By continuously increasing the set temperature in the room from a low temperature to a high temperature, and displaying the outlet location corresponding to each temperature and the air volume of the outlet in an image, a command for equipment to be operated can be provided. You can check the operation,
This has the effect of eliminating the need for the occupant to reach directly to the outlet to check the outlet and the amount of the outlet.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing a vehicle air conditioner according to an embodiment of the present invention.

FIG. 2 is a plan view showing a display unit of the vehicle air conditioner of the embodiment.

FIG. 3 is a perspective view of a conventional bus.

FIG. 4 is a plan view schematically showing a conventional vehicle air conditioner.

[Explanation of symbols]

1: Cooler unit, 2: Heater unit, 6, 7, 8
... Sensor, 30 ... Air conditioner control unit, 31
... Display unit, 32 ... Temperature setting device, 35 ... Air conditioner self-diagnosis device.

Claims (1)

(57) [Claims] 1. A cooler unit having an air outlet at an upper part of a vehicle interior, a heater unit having an air outlet at a lower part of the vehicle interior, a sensor for detecting a room temperature in the vehicle interior, and a sensor for detecting an air temperature outside the vehicle interior. A sensor for detecting the temperature of the cooling water for the engine, a temperature setter for inputting and displaying a set temperature in the vehicle cabin, the cooler unit based on the detected temperature of each of the sensors and the temperature set value of the temperature setter. A control device for controlling the heater unit collectively, and a temperature setting provided in the control device for automatically increasing a temperature setting from a low temperature to a high temperature at a constant temperature step, and controlling an air outlet location and an air volume of the air outlet in response to a control command at each temperature step. And a system checker for displaying the temperature on a display section of the temperature setting device.