JPS5820403Y2 - Air flow switching valve for air conditioners - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air passage switching valve for an air conditioner, and mainly relates to an air passage switching valve for an automobile air conditioner that switches between a siventilator duct and a side defroster.

In automobile air conditioners, it has been widely used to use the side ventilator as a side defroster to prevent dew buildup on the door glass in order to effectively utilize the limited space. An air passage switching valve is provided at the confluence part to switch between ventilation air and warm air.

This air passage switching valve was equipped with a dedicated switching device and could be switched manually by the passenger.However, even if the air conditioner control device is operated, the switching operation of the switching valve must be performed separately. However, since the side ventilator or side defroster is still used, there are inconveniences such as not being able to obtain the desired ventilation from the air outlet.

In addition, the switching operation mechanism of the switching valve has a large number of parts such as a control knob, wire or link system, and pulp, making it expensive. On the other hand, if the switching valve is linked to the control device of the air conditioner, the link system becomes complicated. At the same time, since the switching valve and the control valve must be operated at the same time, a problem arises in operability.

The present invention has been developed in view of the above, and its purpose is to provide a switch valve made of a movable lightweight material at the point where the air channels merge from two directions, so that the ventilator mode or side defrost heater can be switched on or off. To enable automatic switching when the mode is set, to reduce costs by reducing the number of parts related to the switching valve and simplifying the structure, and to simplify the operation of the switching valve. be.

This invention basically consists of installing a switching valve made of lightweight material that moves by sensing wind pressure at the point where the air channels from two directions merge, and also installing a grid in each air path at the merging section. According to the wind pressure of the wind blown from one air passage, the switching valve is brought into close contact with the grid of the other air passage, sealing the other air passage, and automatically switching the air passage. , the present invention will be explained in detail below.

FIG. 1 shows the case where the present invention is applied to an automobile air conditioner.

1 is an air conditioner, and 2 is a duct for the air conditioner.

Reference numeral 3 denotes an intique door, which is arranged at the entrance of the duct 20 and is designed to select the air to be taken in, that is, the inside air 3a and the outside air 3b.

A heater core 4 heats the air taken in, and an air mix door 5 is provided in front of the heater core 4 to adjust the amount of air passing through the heater core 4 and the amount of air bypassing the heater core 4.

6 is a side ventilator duct, I is a front defroster duct, 8 is a side defroster duct, and 9 is a heater duct, all of which are disposed at the other end of the duct 1.

10 is a venturator opening/closing door provided at the entrance of the side ventilator duct 6, 11 is a defroster opening/closing door provided at the entrance of the defroster duct 7, and 12 is provided across both entrances of the side defroster duct 8 and the heater duct 9. It is a common heater door.

13 is a common side duct that serves as both a ventilator duct and a defroster duct, side defroster duct 6
and a side defroster duct 8 are connected to each other.

Reference numerals 14a and 14b indicate highly ventilated gratings provided at the confluence of the side ventilator duct 6 and the side defroster duct 80, respectively, and 15 indicates a portion where both the side ventilator duct 6 and the side defroster duct 80 converge, serving as valves for both the ducts. This is a switching valve made of lightweight material that can be moved by wind pressure.

The switching valve 15 may be either plate-shaped or sheet-shaped.

Next, the operation of the air path switching valve of the present invention will be explained.

First, when obtaining ventilator wind, the heater core 40 passage is closed by the air mix door 5, the outside air taken in is bypassed, the heater door 12 of the test regulator section 17 is closed, and the ventilator opening/closing door 10 is opened, and the wind is passed through the side ventilator. As shown in the detailed diagram in FIG.
6 and remove the grating 14b on the side defroster duct 8 side.
A side ventilator air path is formed by bringing the ventilator into close contact with the side (dash line position), and ventilator air is blown out from the outlet of the common side duct 13.

To obtain the side defroster mode, the heater door 12 in the distributor section 17 is opened, and warm air heated to an appropriate temperature by the action of the air mix door 5 is sent to the side defroster duct 8 from the outlet of the common side duct 13. It blows out air and acts as a side defroster.

In other words, the air passing through the side defroster duct 8 flows through the grid 1.
5b, as shown in FIG. 2, the switching valve 16 made of lightweight material is pushed up by wind pressure and brought into close contact with the lattice 15a of the side ventilator duct 6 at the actual root position, thereby switching the air path to the side defroster air path. Warm air is blown out from the outlet of the side duct 13 as a side defroster.

At the same time, blow out warm air from the outlet of the heater duct 9.

The present invention is applicable not only to a combination of a ventilator and a side defroster, but also to any type of air passage switching valve that has an air passage from two directions and switches the air passage based on wind pressure.

Note that the lightweight material used as the switching valve is a thin plate or thin piece of vinyl chloride or urethane sheet that senses wind pressure and is easily movable and lightweight, and the grid placed at the confluence of each air path is made of wire mesh or press molding. Use steel etc.

As explained in the embodiments above, according to the present invention, a grid is provided at the confluence of each air path from two directions, and a switching valve made of a lightweight material that can be moved by wind pressure is disposed at the confluence. Therefore, the rider can automatically and reliably switch the switching valve without changing the switching valve, and the desired blowing mode can be obtained.

That is, side defroster air or ventilator air is obtained from the common side duct outlet.

Furthermore, according to the present invention, the air path switching valve has an extremely simple structure consisting of a grid provided at the merging portion and a valve made of lightweight material provided at the merging portion, thus reducing the number of parts. Moreover, the structure of the switching valve can be simplified, and thereby the cost of the switching valve can be significantly reduced.

Further, according to the present invention, the valve is an automatic air path switching valve, and there is no need to provide a special operating section, and the valve automatically switches depending on the wind pressure.

Therefore, no particular operation by the occupant is required.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an embodiment of the present invention, and FIG. 2 is an enlarged view of its main parts. 1...Car air conditioner, 2...Duct,
6... Side ventilator duct, 8...
...Side defroster duct, 14a, 14b...
...grid, 15... switching valve made of lightweight material.

Claims (2)

[Scope of utility model registration request] (1) A switching valve made of lightweight material that senses wind pressure and moves is installed at the part where the air paths from two directions merge, and a grid is installed in each air path at the merge point to An air conditioner switching valve that switches air paths by bringing the switching valve into close contact with a grid of another air path and sealing the other air path by the pressure of the wind blown out from the air path. (2) Each air passage at the confluence part is a side ventilator air passage and a side defroster air passage.
) The air passage switching valve for air conditioners described in item 2.