JPS6233621Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an outside air introduction device for an automobile.

Some outside air introduction devices for automobiles are conventionally designed to take in outside air through a slit provided in a cowl upper panel. For example, the outside air introduction device for an automobile shown in FIG. Introduced in 5.

Since the introduced outside air is provided with the waterproof plate 6, it suddenly flows as shown by the arrow 7. As a result, moisture mixed in the outside air is separated and discharged through the drain 8. The outside air that has flowed in the direction of arrow 7 further flows in the direction of arrow 9, and is led to the heater, air conditioner, etc. through the outside air inlet 10. In this way, water contained in the outside air was removed and only air was sent to heaters, air conditioners, etc.

However, the above-mentioned conventional outside air introduction device for automobiles
Since the outside air passage is set to be long, this causes an increase in passage resistance, and in addition, the outside air that has been led downward 7 must be directed upward again 9.
This had the disadvantage that the ram pressure generated on the cowl upper panel surface could not be used effectively. This has resulted in inconveniences such as requiring a large amount of fan output for introducing outside air.

This invention was made in view of the above circumstances,
An inner cowl ventilator box and an outer cowl bench box containing the inner cowl ventilator box are provided under the slit provided in the cowl upper panel, and a drain is provided in the inner cowl ventilator box, and the outer cowl ventilator box is provided with a drain. - Provides an outside air introduction device for an automobile in which an outside air introduction port is provided at the bottom of the cowl ventilator box, and outside air and water are separated in the gap between the cowl upper panel and the inner cowl ventilator box. .

The invention will now be described with reference to embodiments shown in the accompanying drawings. 2 and 3 a to 3 c show an embodiment of the outside air introduction device for an automobile according to the present invention, in which 11 is a cowl upper panel, 12 is an inner cowl ventilator box, and 13 is an outer cowl ventilator box. It is. In the figure, arrow D indicates the front side where the engine room is located, and arrow E indicates the driver's seat side.

The cowl upper panel 11 is provided at the same position as in a conventional automobile, and includes a slit 14. The inner cowl ventilator box 12 and the outer cowl ventilator box 13 are provided below the slit 14 and adjacent to the dash panel. The outer cowl ventilator box 13 is fixed to the cowl upper panel 11, and the inner cowl ventilator box 12 is disposed within the outer cowl ventilator box 13. In addition,
A predetermined gap is provided between the upper end 12' of the inner cowl ventilator box 12 and the cowl upper panel 11.

Above inner cowl ventilator box 1
A drain pipe 16 is provided at the bottom of the engine compartment 2, and the drain pipe 16 passes through the outer cowl ventilator box 13 and the dash panel to the engine room side. An outside air inlet 17 is provided at the bottom of the outer cowl ventilator box 13, and the outside air inlet 17 is connected to the connection duct 1.
8 is connected. A weir 19 is further provided around the outside air inlet 17.

In the outside air introduction device of the above embodiment, the outside air and water 21 introduced through the slit 14 are separated by the gap between the cowl upper panel 11 and the inner cowl ventilator box 12, and the outside air is introduced through the outside air introduction port 17. The water is led to a heater, air conditioner, etc. via a connecting duct 18, and is discharged from a drain pipe 16. Note that even if water gets into the outer cowl ventilator box 13, water will not get into the outside air inlet 17 due to the weir 19. The remaining water is in the small pipe 2
0, and is discharged outside the vehicle by a method such as merging with the drain pipe 16.

In the above embodiment, the passage area can be increased in the order of slit 14 → gap between cowl upper panel 11 and inner cowl ventilator box 12 → passage inside outer cowl ventilator box 13. Since there is no need to reverse the unnecessary outside air which has proceeded downward upwards, the passage resistance is reduced. Furthermore, of course, ram pressure can also be used effectively.

As mentioned above, the outside air introduction device for automobiles according to the present invention can significantly reduce passage resistance, effectively utilize the ram pressure on the cowl upper panel surface, and reduce fan output, thereby reducing energy loss. Although it is small, the practical effect is large.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional outside air introduction device, and FIG. 2 is a perspective view of an embodiment of the outside air introduction device according to the present invention.
3a, b, and c are a cross-sectional view taken along line AA, line B-B, and line C-C in FIG. 2. 1, 11... Cowl upper panel, 2, 14
...Slit, 4...Dutch panel, 6...Waterproof plate, 10, 17...Outside air inlet, 12...Inner cowl ventilator box, 13...Outer cowl ventilator box, 16...
drain pipe.

Claims (1)

[Scope of utility model registration request] An inner cowl ventilator box and an outer cowl ventilator box containing the inner cowl ventilator box are installed under the slit provided in the cowl upper panel, and the cowl upper panel and the inner cowl
An automobile characterized in that a gap is provided between the cowl ventilator box and the cowl ventilator box to separate outside air and water, a drain is provided in the inner cowl ventilator box, and an outside air inlet is provided in the outer cowl ventilator box. Outdoor air introduction device.