JPH0585152A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE:To blow a large amount of conditioned air to an entrance port of a vehicle by a simple method at the time of opening an entrance door of the vehicle. CONSTITUTION:A blow port 6 for blowing conditioned air to an entrance port 2 is opened in a blower duct 5 for supplying conditioned air in the vicinity of the entrance port 2 of a vehicle. A switching damper 7 of providing an opening part 7a for opening/closing this blow port 6 is provided in the blower duct 5 and opened, when an entrance door 3 is opened, to blow a large amount of conditioned air toward the entrance port 2 from the blow port 6 of large opening area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system for a vehicle that blows conditioned air to an entrance / exit of a vehicle.

[0002]

2. Description of the Related Art As an air conditioning system for a vehicle that blows air-conditioned air to an entrance / exit of a vehicle in order to improve comfort when getting on / off a door of the vehicle, for example, the actual opening 60-18622.
It is proposed in Japanese Patent Publication No.

In the above-mentioned vehicle air conditioner, when the door of the vehicle is opened, a dedicated blower provided in a duct above the entrance of the vehicle is actuated so that an opening above the entrance of the vehicle opens. Air-conditioned air is blown toward the entrance / exit.

[0004]

On the other hand, in the case where a dedicated blower is provided in the duct above the entrance / exit of the vehicle, it is necessary to enlarge the blower in order to obtain a large air volume. However, there is a problem in mounting, and there is a problem in that cost is increased because a dedicated blower is mounted.

The present invention has been made in view of the above problems, and it is an object of the present invention to blow a large amount of conditioned air to an entrance / exit of a vehicle without impairing the mountability. To do.

[0006]

In order to achieve the above object, the present invention is for (1) a vehicle for blowing conditioned air to an entrance / exit of a vehicle when the entrance / exit door is opened. In an air conditioner, a blower duct for supplying conditioned air to the vicinity of the entrance / exit opening, a blower opening provided in this blower duct for blowing conditioned air to the entrance / exit opening, and provided in the blower duct, And a switching damper that opens and closes an air outlet, and when the opening / closing door is opened, the switching damper is opened to blow the conditioned air from the air outlet to the door. The switching damper has an opening portion, and uses technical means having a configuration in which the opening area of the opening portion is smaller than the opening area of the air outlet.

[0007]

According to the above means, the switching damper, which closes the outlet for blowing the conditioned air to the vehicle entrance / exit, opens in conjunction with the opening of the entry / exit door of the entrance / exit, so that it flows in the air duct. The conditioned air is blown from the outlet having a large opening area, and therefore a large amount of conditioned air is blown to the entrance / exit.

Here, when the entry / exit door is closed, the switching damper is also closed and the air outlet is closed, but the conditioned air flowing in the blower duct through the opening provided in the switching damper. However, since a small amount of air is blown to the entrance / exit, the balance of air blowing in the entire passenger compartment is maintained.

Since the air outlet and the switching damper are provided in the existing air blow duct, there is no obstacle in mounting and the structure is simple.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a vehicle air conditioner of the present invention mounted on a bus. In FIG. 1, cool air is supplied from a cooling unit 4 above an entrance / exit 2 of a door 3 of a bus vehicle 1. The blower duct 5 is installed in the front-rear direction of the vehicle, and at the part of the blower duct 5 directly above the entrance / exit 2, an outlet 6 for blowing cold air toward the entrance / exit 2 is provided. There is.

FIG. 2 is an enlarged view of the main part of FIG.
As shown by the dotted line in FIG. 2, a switching damper 7 that opens in conjunction with the opening of the entry / exit door 3 is provided at the air outlet 6, and the switching damper 7 has an opening 7 smaller than the opening area of the air outlet 6.
a has been opened. The opening 7a is for maintaining a ventilation balance in the entire passenger compartment by blowing a small amount of air to the entrance / exit 2 even when the entrance / exit door 3 is closed.

FIG. 3 shows the switching of the switching damper 7.
As shown in FIG. 3, the opening area S1 of the outlet 6 is set to be much larger than the opening area S2 of the opening 7a of the switching damper 7. In FIG. 3, 8 is a shaft of the switching damper 7, 9 is a servomotor for rotating the switching damper 7 by rotating the shaft 8, and the servomotor 9 emits a signal by opening and closing the door 3. It is designed to be driven by an instruction from the control circuit 10 which operates by receiving a signal from the door switch 11.

FIG. 4 is an electric circuit diagram relating to the switching control of the switching damper 7. As shown in FIG.
The contact 12 a of the relay 12 connected to the control circuit 10 via the main switch 13 led from the battery 14 is also connected to the control circuit 10.
Is connected to the servomotor 9 through the above, and an electric circuit is constituted by the above.

Next, the operation of the above embodiment will be described. In FIG. 4, when the entry / exit door 3 is closed after the main switch 13 is turned on, the door switch 11
Is open, the relay 12 is not energized, the relay contact 12a is open, and the servomotor 9 is not driven. Therefore, the switching damper 7 is at the position A in FIG. for that reason,
A small amount of cool air is blown from the air outlet 6 to the entrance / exit 2 through the opening 7a of the switching damper 7 having a small opening area.

On the other hand, when the door 3 is opened, the door switch 11 is closed, so that the relay 12 is energized via the control circuit 10, the relay contact 12a is closed, the servo motor 9 is driven, and the instruction of the control circuit 10 is given. Switch damper 7 by
Rotates 90 ° and switches to the position B in FIG. for that reason,
A large amount of cold air is blown to the entrance / exit 2 from the outlet 6 having a large opening area. As a result, comfort can be obtained at the time of riding, and hot air outside the vehicle compartment is prevented from entering the vehicle interior through the entrance / exit 2.

Next, when the door 3 is closed,
Although the door switch 11 is opened, the relay 12 is continuously energized according to an instruction from the control circuit 10, and the switching damper 7 is changed to A in FIG.
After the servomotor 9 is driven until the position is switched to the position, the relay 12 is de-energized and the relay contact 12a is opened.

In FIG. 3, when it is at the position of the switching damper 7A, a small amount of cold air may be blown to the entrance / exit 2, so the opening area S2 of the opening 7a of the switching damper 7 is equal to the outlet. It is desirable to reduce the opening area S1 of 6 to about 1/4 in order to maintain the balance of air blowing in the entire passenger compartment.

Next, in the present embodiment, the turning angle of the switching damper 7 is set to 90 °, but by changing the opening area S2 of the opening 7a of the switching damper 7 and the turning angle of the switching damper 7, the boarding / alighting operation is performed. When the door 3 is opened, it is possible to adjust the amount of cool air blown to the entrance / exit 2 over a wide range.

In this embodiment, the cold air is blown to the entrance / exit of the bus vehicle.
For example, it can be applied to a light van or the like.
In this embodiment, the cool air is blown to the entrance / exit, but if the outside air temperature is low, the hot air may be blown to the entrance / exit as necessary.

[0020]

As described above, according to the present invention, by switching the switching damper that opens and closes the air outlet provided in the air duct, a large amount of conditioned air is supplied to the door when the door of the vehicle is opened. Since it blows air, a dedicated blower is eliminated, the mountability on the vehicle is improved, the structure is simplified, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a vehicle air conditioner of the present invention in a bus vehicle in a see-through manner.

FIG. 2 is a perspective view showing an enlarged main part of the same apparatus as above.

[Fig. 3] Fig. 3 is a schematic diagram for explaining switching of the air flow rate of the device.

FIG. 4 is an electric circuit diagram relating to switching control of a switching damper of the same apparatus.

[Explanation of symbols]

 1 vehicle 2 entrance / exit 3 entrance / exit door 5 air duct 6 outlet 7 switching damper 7a switching damper opening S1 opening area of outlet S2 opening area of switching damper opening

Claims (2)

[Claims] 1. A vehicle air conditioner that blows air-conditioned air to an entrance / exit of a vehicle when the entry / exit door provided in the entrance / exit of the vehicle is opened, and a ventilation duct for supplying the air-conditioned air to the vicinity of the entrance / exit. An air outlet is provided in the air duct to blow the conditioned air to the entrance / exit, and a switching damper is provided in the air duct to open / close the air outlet. The switching damper is provided when the door is opened. And a conditioned air is blown from the outlet to the entrance / exit of the vehicle. 2. The vehicle air conditioner according to claim 1, wherein the switching damper has an opening, and an opening area of the opening is smaller than an opening area of the air outlet.