JPS6144891Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a control device related to a vehicle interior air conditioner used in a vehicle such as an automobile and an air purification device that purifies the vehicle interior air.

Air conditioners used in vehicles such as automobiles generally have an outside air intake and an inside air intake, and a damper selectively opens and closes both air intakes. A so-called outside air intake mode in which the air intake port is opened and the inside air intake port is closed, and a so-called inside air circulation mode in which the outside air intake port is closed and the inside air intake port is opened are selected.

Furthermore, in some vehicles such as automobiles, an air purification device is provided independently of the air conditioner for the purpose of removing odors, smoke, etc. from the interior of the vehicle. Conventionally, this air purifying device is generally operated selectively according to the will of the occupant.

To eliminate dirt caused by smells and smoke in the air inside the vehicle,
When the outside air is clean, it is faster to introduce outside air into the cabin and ventilate the cabin air more quickly than to purify the air with an air purification device, and when the outside air is polluted, the outside air is used to ventilate the cabin air. In this case, it is preferable to purify the air inside the vehicle by using an air purification device.

In view of the above-mentioned circumstances, the present invention selects and sets the air intake mode of the air conditioner according to the pollution level of the outside air when the pollution level of the air inside the vehicle exceeds a predetermined value, and also purifies the air in connection with this. It is an object of the present invention to provide a related control device for an air conditioner and an air purification device, which controls the operation of the devices and quickly purifies the air inside a vehicle.

According to the present invention, this purpose is to improve the relationship between an air conditioner in which an outside air intake mode that takes in outside air and an inside air circulation mode that circulates cabin air are selectively set, and an air purification device that purifies the cabin air. The control device uses a vehicle interior air pollution sensor that measures the pollution level of the vehicle interior air, an outside air pollution sensor that measures the outside air pollution level, and a vehicle interior air pollution sensor to detect when the vehicle interior air pollution level is above a predetermined value. When a certain thing is measured and the outside air pollution level is measured by the outside air pollution sensor to be higher than a predetermined value, the air conditioner is set to an inside air circulation mode and the air purification device is activated so that the inside air pollution sensor detects the outside air pollution level. control means for setting the air conditioner to an outside air intake mode when the degree of contamination of the air inside the vehicle is measured to be above a predetermined value and the degree of contamination of the outside air is measured by the outside air pollution sensor to be below the predetermined value; This is achieved by a related control device for a vehicle air conditioner and an air purifying device, which is characterized by having the following.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram showing one embodiment of a control device related to a vehicle air conditioner and an air purifying device according to the present invention. In the figure, 1 indicates a ventilation duct. The ventilation duct 1 has an inside air intake 2 and an outside air intake 3 at one end, and the inside air intake 2 and the outside air intake 3 are selectively connected to each other by an inside/outside air switching damper 4. One side is open and the other is closed. Inside/outside air switching damper 4
is driven by an appropriate internal/external air switching actuator 5 such as a servo motor. Further, the ventilation duct 1 has a heater outlet 6 and a vent outlet 7 at the other end. Heater outlet 6
is often provided below the instrument panel, and is designed to blow air mainly toward the feet of the occupants seated in the seats. The vent outlet 7 is often provided at the front of an instrument panel and is configured to blow air mainly toward the upper body of an occupant seated on a seat.

In this embodiment, the heater outlet 6 and the vent outlet 7 are selectively opened and closed by one switching damper 8. Further, the ventilation duct 1 has a defroster outlet 10 at the other end, and the defroster outlet 10 is selectively opened and closed by a damper 11. The switching damper 8 and the damper 11 may be operated at the driver's will using a lever (not shown) provided on the air conditioning operation panel.

An electric motor 12 is located near the one end of the ventilation duct 1.
A blower fan 13 is provided which is rotationally driven by. The blower fan 13 is configured to blow air taken in from the vehicle interior air intake 2 or the vehicle exterior air intake 3 toward the heater outlet 6 and the vent outlet 7. The rotation speed of the electric motor 12 is controlled by a fan speed control device 14.

In the ventilation duct 1 on the downstream side of the ventilation fan 13 in terms of the air flow, there is a fan in order to cross the entire air flow flowing through the ventilation duct, that is, to cross all of one cross section of the ventilation duct 1. , an evaporator 15 which is a cooling heat exchanger is provided. The evaporator 15 includes a compressor, a condenser, and the like (not shown) to form a refrigeration cycle, and is supplied with refrigerant.

Further, an air mix type temperature control mechanism 19 is provided in the ventilation duct 1 further downstream from the location where the evaporator 15 is disposed. The temperature adjustment mechanism 19 includes a heater core 20, which is a heating heat exchanger, provided in one cross section of the ventilation duct 1 in a part of the cross section, and a heater core 20 provided in the cross section to control the airflow flowing through the ventilation duct 1. It includes an air mix damper (temperature control damper) 21 that divides the air into a first air flow that flows through the heater core 20 and a second air flow that bypasses the heater core 20. and is adapted to adjust the temperature of the blowing air by adjusting the distribution ratio of said first and second air streams. Engine cooling water (not shown) is supplied to the heater core 20 in a circulating manner. When the air mix damper 21 is located at the position shown by the solid line in FIG. When the damper 21 is in the position shown by the imaginary line in FIG. 1, all of the air flowing through the ventilation duct 1 bypasses the heater core 20, so that the temperature of the blown air becomes low.

The air mix damper 21 is adapted to be driven by an air mix damper actuator 23.

Further, an air purifying device 40 is provided behind the rear seats. The air purification device 40 includes a blower fan 4
1 sucks the air inside the vehicle interior into the duct 43 through the air suction port 42, purifies the air with the air purification element 44, and blows the purified air toward the vehicle interior through the air outlet 45. It's becoming like that. The blower fan 41 is driven by an electric motor 46.

Inside/outside air switching actuator 5, air mix damper actuator 23, fan speed control device 1
4 and the air purification device 40 are controlled based on operation commands generated by the microcomputer 24, respectively. Microcomputer 2
4 receives a set temperature signal from a temperature setting device 25 operated by a passenger such as a driver, an outside temperature signal from an outside air temperature sensor 26, and a vehicle interior temperature sensor 27.
The solar radiation sensor 28 receives a vehicle interior temperature signal, the solar radiation sensor 28 provides a solar radiation amount signal, the vehicle interior air pollution sensor 29 provides a vehicle interior air pollution level signal, and the outside air pollution sensor 39 provides an outside air pollution level signal. The actuator is configured to output an operation command signal to the actuator, the fan speed control device, and the air purification device.

The microcomputer 24 is a temperature setting device 25
The set temperature and the outside temperature sensor 26
The target blowout air temperature is calculated based on the outside air temperature measured by the vehicle interior temperature sensor 27, the vehicle interior temperature measured by the vehicle interior temperature sensor 27, and the amount of solar radiation measured by the solar radiation sensor 28.

Further, the microcomputer 24 calculates a target damper opening degree based on the target blowout air temperature, and outputs a signal based on the calculation result to the air mix damper actuator 23. As a result, the opening degree of the air mix damper 21 is adjusted so that the temperature inside the vehicle reaches the set temperature set by the temperature setting device 25.

Further, the microcomputer 24 uses the target blowing air temperature and the vehicle interior air and outside air pollution sensor 29.
and 30, an operation command signal is output to the inside/outside air switching actuator 5 to select and set the air intake mode. That is, when the degree of contamination of the vehicle interior air measured by the vehicle interior air pollution sensor 29 is below a predetermined value, the microcomputer 24 operates based on the target blowout air temperature, and when it is low, in other words, in the cooling mode. When the internal air circulation mode is set and the target blowing air temperature is high,
In other words, in the heating mode, the outside air intake mode is set, and on the other hand, when the degree of pollution of the cabin air measured by the cabin air pollution sensor 29 is equal to or higher than a predetermined value, the control is performed based on the target blowing air temperature as described above. At this time, if the degree of contamination of the outside air measured by the outside air pollution sensor 30 exceeds the predetermined value, the mode is set to the internal air circulation mode, and if the degree of contamination is below the predetermined value, the mode is set to the outside air intake mode. ing.

Further, the microcomputer 24 calculates the optimum blowing fan speed based on the target blowing air temperature,
A signal based on the calculation result is sent to the fan speed control device 1.
4 to control the fan speed, and increase the fan speed when the outside air intake mode is set due to pollution of the air inside the vehicle, and decelerate the fan speed when the air purification device 40 is operating. It's becoming like that.

In addition, when the degree of pollution of the air in the vehicle interior measured by the air pollution sensor 29 in the vehicle interior is a predetermined value or more, and the degree of pollution of the outside air measured by the outdoor air pollution sensor 30 is more than a predetermined value, the microcomputer 24 is activated. An energization command signal is output to the electric motor 46 that is to operate the air purifying device 40.

Next, with reference to the flowchart shown in FIG. 2, the control procedure for the air conditioner and air purification device when the air inside the vehicle is contaminated will be explained. First, in step 1, the vehicle interior air pollution sensor 29 determines whether the degree of pollution of the vehicle interior air is above a predetermined value. If the degree of contamination of the air inside the vehicle is below a predetermined value, the process proceeds to step 2. In this step, if the air purifying device 40 has been operating up to now, it is stopped, and the process proceeds to step 3. In step 3, normal air conditioning control is performed based on the target blown air temperature.

If the degree of contamination of the air inside the vehicle is equal to or higher than a predetermined value in step 1, the process proceeds to step 4. A determination is made whether or not. If the degree of pollution of the outside air is below the specified value,
Proceeding to step 5, in this step, the outside air intake mode is set over the air intake mode setting control based on the target blowing air temperature, and in step 6, the speed of the blower fan 13 is increased. . At this time, clean air is introduced into the vehicle interior, thereby ventilating the interior of the vehicle and eliminating pollution within the vehicle interior.

If the degree of contamination of the outside air is equal to or higher than a predetermined value in step 4, the process proceeds to step 7, in which the air intake mode setting control based on the target outlet air temperature is exceeded and the air circulation mode is set. After setting, the electric motor 46 is energized in step 8, and the air purifying device 40 is activated. Then, in step 9, the blower fan 13 is decelerated in accordance with the amount of air blown by the blower fan 41. At this time, the air inside the vehicle is purified by the air purification device.

As is clear from the above description, according to the present invention, when the air inside the car is contaminated, the air inside the car is automatically purified in a preferable manner according to the degree of pollution of the outside air at that time. It will be appreciated that a control device is provided that provides associated control of an air conditioner and an air purification device.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing one embodiment of a related control device for a vehicle air conditioner and an air purifying device according to the present invention, and FIG. 2 is a flowchart showing the operation of the related control device according to the present invention. 1...Ventilation duct, 2...In-vehicle air intake, 3...
...Vehicle outside air intake, 4...Inside and outside air switching damper, 5...
...Inside/outside air switching actuator, 6...Heater outlet, 7...Vent outlet, 8...Switching damper, 1
0... Defroster outlet, 11... Damper, 12
...Electric motor, 13...Blower fan, 14...Fan speed control device, 15...Evaporator, 19...
... Temperature adjustment mechanism, 20 ... Heater core, 21 ...
Air mix damper, 23...Air mix damper actuator, 24...Microcomputer, 25...Temperature setting device, 26...Outside air temperature sensor, 27...Interior temperature sensor, 28...Solar radiation sensor, 29... In-vehicle air pollution sensor, 30...
...Outside air pollution sensor, 40...Air purification device, 41
...Blower fan, 42...Air suction port, 43...
...Duct, 44...Air purification element, 45...Air outlet, 46...Electric motor.

Claims (1)

[Scope of utility model registration request] This is a control device related to an air conditioning system that selects between an outside air intake mode that takes in outside air and an inside air circulation mode that circulates air inside the cabin, and an air purification system that purifies the air inside the cabin to prevent contamination of the air inside the cabin. An outside air pollution sensor measures the outside air pollution level, an outside air pollution sensor measures the outside air pollution level, and an outside air pollution sensor measures the outside air pollution level when the inside air pollution sensor measures the outside air pollution level. When it is determined that the degree of pollution of the air inside the vehicle is above a predetermined value, the air conditioner is set to an internal air circulation mode, the air purification device is activated, and the air pollution sensor detects that the degree of pollution of the air inside the vehicle is above the predetermined value. and control means for setting the air conditioner to an outside air intake mode when the outside air pollution level is measured by the outside air pollution sensor to be below a predetermined value. Control equipment related to vehicle air conditioners and air purification equipment.