JPH036004B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ventilation system for an automobile that uses a solar cell as a power source to ventilate the interior of a vehicle.

An example of this type of ventilation system is shown in FIG. A ventilation switch is turned on using a solar battery 1 installed on the roof of the automobile as a power source to operate a blower motor 2 of an air conditioner, taking outside air into the vehicle interior from the air conditioner and exhausting the indoor air from a drafter 3. These ventilation systems prevent the interior of the vehicle from becoming too hot due to sunlight and outside temperature, such as when the vehicle is parked in the hot summer sun.

Here, in the conventional air conditioner, air is blown out by the blower motor 2 from each outlet of the vent, differential, and floor (heater), but the open/closed state of the doors 4, 5, and 6 of each outlet is changed before ventilation. It is determined by the position of the air conditioning mode switch, and depending on the operating position of the mode switch, the differential air outlet may be open or the floor air outlet may be open, so the indoor ventilation flow will be uneven and the room temperature reduction effect will be poor. There was a problem.

The present invention has been made in view of the above-mentioned problems, and by providing a means for automatically adjusting the air outlet to only the vent outlet when indoor ventilation is performed using solar cells, the mode switch can be activated simply by operating the indoor ventilation switch. The purpose is to provide a ventilation device that reduces the room temperature effectively and provides reliable indoor ventilation while saving the labor of operation.

FIG. 2 shows an embodiment of the present invention, which is applied to a vacuum outlet operating mechanism. In the intake unit 7, the opening ratio of the outside air A and the inside air B is determined by adjusting the opening degree of the intake door 8. The opening of the intake door 8 is controlled by a vacuum type actuator 9, and a vacuum solenoid 10 is provided as a driving source for the intake door 8.
Engine intake negative pressure or atmospheric pressure is selectively supplied to the actuator 9 in accordance with the on/off operation of the actuator 1. The intake switch 11 operates the intake door 8 to the internal air circulation (REC) side in its ON state,
Operate to outside air intake (FRESH) side in OFF operation state. Therefore, when turning off the ignition switch 12, such as when parking, the intake door 8 is forced to the outside air introduction side regardless of whether the switch 11 is on or off, and the intake switch 11 is forced to the outside air introduction side for indoor ventilation. It saves you the trouble of operating it.

That is, the intake door switching means switches the intake door to the outside air introduction side when the ignition switch is turned off.

The speed of the blower motor 13 provided in the intake unit 7 is adjusted by a fan switch 14, and the power supply is switched to the solar cell 1 side by a ventilation switch 15. Therefore, when ventilating the vehicle interior, the blower motor 13 is operated by the solar cell 1 regardless of the operation of the fan switch 14, and since the intake door 8 is on the outside air introduction side, outside air is introduced by the blower.

The outside air introduced from the intake unit 7 is forced into the heater unit 17 through the cooling unit 16. The vent door 18, floor door 19, and differential door 20 provided in the heater unit 17 are provided with vacuum actuators 21, 22, and 23, respectively.
The respective actuators 2 are opened and closed by
1, 22, 23 are vacuum solenoids 24, 2
5 and 26, respectively. vent door 1
8 is an operating direction in which the solenoid 24 is turned off and is opened when supplying atmospheric pressure to the actuator 21. On the other hand, floor door 1
9 and the differential door 20 are operated in a closed state when the solenoids 25 and 26 are turned off.

The mode switch 27 is configured as a contact circuit as shown in the figure, and the switch knob 27A is set to the vent (VENT).
In the bilevel (B/L) position, all solenoids 24 to 26 are turned off, leaving only the vent door 18 open, and in the bilevel (B/L) position, only the solenoid 25 is turned on, opening the vent door 18 and floor door 19, and turning off the heater (HEAT). At the position, the solenoids 25 and 24 are turned on, the vent door 18 is closed, the floor door 19 is opened, and the differential (DEF) is turned on.
At the position, the solenoids 26 and 24 are turned on to close the vent door and open the differential door. and,
The power source of the mode switch 27 is connected to the battery via the ignition switch 12, and when the ignition switch 12 is in the OFF state, the solenoids 24 to 24 are connected to each other regardless of the position of the switch knob 27A.
6 are all turned off and only the vent door 18 is opened.

That is, the air outlet door switching means opens the vent door and closes the floor door and the differential door when the ignition switch is turned off.

Therefore, for air ventilation using a solar battery, simply switch the ventilation switch 15 to the solar battery 1 side, and there is no need to operate the intake switch 11 or the air control mode switch 27. Air is automatically regulated to blow air into the vehicle interior, effectively ventilating the interior of the vehicle and reducing the rise in room temperature. The reason air blowing out of the vent outlet is effective ventilation is because the room temperature rises highest in the upper part of the car when the car is left in the hot sun, and it is difficult to ventilate the upper part of the car with floor air or differential air.

As described above, according to the present invention, in order to automatically adjust the air outlet from the air conditioner to only the vent outlet when the solar battery-powered blower operates to ventilate the vehicle interior, only one switch operation, that is, the operation of the ventilation switch, is required. It is possible to effectively and reliably ventilate the room to reduce the room temperature by just using the air conditioner, and it also eliminates the need for troublesome operations by the occupants.

[Brief explanation of the drawing]

FIG. 1 is a diagram for schematically explaining a vehicle interior ventilation system, and FIG. 2 is a configuration diagram showing an embodiment of the present invention. 1...Solar cell, 2...Blower motor, 4...
Vent door, 5...Differential door, 6...Floor door, 8...Intake door, 11...Intake switch, 12...Ignition switch, 1
3... Blower motor, 14... Fan switch,
15... Indoor ventilation switch, 18... Vent door, 19... Floor door, 20... Differential door, 2
1, 22, 23... Vacuum actuator, 2
4, 25, 26... Vacuum solenoid, 27
...Mode switch.

Claims (1)

[Scope of Claims] 1. In a ventilation system that operates a blower motor of an air conditioner using a solar battery as a power source to ventilate a vehicle interior, an intake door switching means that switches the intake door to the outside air introduction side when an ignition switch is turned off. , an air outlet door switching means that opens the vent door and closes the floor door and the differential door when the ignition switch is turned off; and a ventilation switch that switches the power source of the blower motor between the battery power source and the solar battery side. A ventilation system for an automobile, which automatically adjusts to blowing outside air only from a vent door when ventilating a vehicle interior.