JPS6145321Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in a water draining device that automatically discharges moisture accumulated at the bottom of an air cleaner to the outside of a vehicle.

Air cleaners installed in automobiles remove dust and moisture from the air at the same time. The removed water is temporarily retained at the bottom of the air cleaner and is discharged from the vehicle through a water drainage device.

Conventionally, this water draining device has been used, for example, as shown in Fig. 1.
The one shown in FIG. 2 is used. (Refer to Service Bulletin No. 355, page 68, published by Nissan Motor Co., Ltd., April 1973) The air taken in from the outside air intake port 2 of the air cleaner body 1 is removed from dust and moisture by the cyclone 3 and filter element 3A. The purified air is then sucked into the engine body (not shown) through the supply port 4.

The removed moisture is temporarily stored in the air cleaner body 1.
The dust is collected in a dust pan 5 provided at the bottom of the .
A drain hole 6 is provided in the side wall of the dust pan 5, and a rubber plate valve 8 is provided in the drain hole 6, which is integrally caulked with a guide 7. When the amount of water accumulated in the dust pan 5 reaches a certain level, the water itself The weight pushes the valve 8 outward, opening the drain hole 6 and draining water.

However, in such a conventional air cleaner water draining device, when the engine is stopped or decelerated, the rubber plate valve 8 easily opens to promote good drainage, but when accelerating with a large amount of intake air or During constant speed operation, the suction negative pressure of the air cleaner is high, making it difficult to open the valve and making it impossible to drain water sufficiently.

Further, when the outside of the air cleaner main body 1 is directly exposed to water, there is a problem that the sealing performance of the valve 8 is poor, and water instead enters the inside of the dust pan 5.

Furthermore, if the sealing function deteriorates due to deterioration of the rubber material from which the valve 8 is made, the gap becomes a passage for intake air, causing noise.

This idea was created with a focus on these problems, and included a drainage hole at the bottom of the air cleaner dust pan, and a valve that opened and closed this hole at the same time, which was linked to a float that floated depending on the amount of water stored in the dust pan. An object of the present invention is to provide an automatic water draining device that can easily drain water accumulated in an air cleaner dust pan even during engine operation by connecting the air cleaner dust pan with the air cleaner dust pan.

This invention will be explained below based on the drawings.

FIG. 3 is a sectional view showing an embodiment of this invention.

The removed moisture accumulates in a dust pan 5 provided at the bottom of the air cleaner body 1.

A drain hole 10 for drainage is provided at one end of the bottom of the dust pan 5, and at the same time, this drain hole 1
Rubber drain valve 11 that opens and closes 0 from the outside
will be provided.

This drain valve 11 is supported by a valve arm 13 which is attached to its center by a caulking 12 or the like and performs a linking action, and normally seals the drain hole 10.

The valve arm 13 is rotatably provided around the fulcrum A on the bracket 14 protruding from the inner bottom surface of the dust pan 5, and as described above, supports the drain valve 11 on one side and is connected to the float 15 on the other side. .

The float 15 is placed on the inner bottom surface of the dust pan 5, and its upper surface is pressed by a spring 16 with an appropriate pressure. Note that 17 is a cylindrical guide plate that protects the valve 11.

When an automatic drainage device is configured in this way,
Since the float 15 is pressed against the bottom surface of the dust pan 5 by the pressing force of the spring 16, the valve arm 13 is urged clockwise in the figure around the fulcrum A by the link action, and the valve 11 is pushed into the drain hole 10. is sealed.

Therefore, the water sucked into the air cleaner main body 1 is separated from the air by the cyclone 3 provided in the main body and collected in the dust pan 5 at the bottom of the air cleaner.

When this amount of water increases, the float 15 built into the dust pan 5 overcomes the pressing force of the spring 16 and floats up, and the drain valve arm 13 fixed to the float 15 rotates counterclockwise around the fulcrum A. , press down the drain valve 11 to drain the water.

When the water runs out, float 15 goes down and valve 1
1 seals the drain hole 10 again.

On the other hand, when the outside of the air cleaner body 1 is directly exposed to water, the valve 11 is kept in a sealed state by the elastic force of the spring 16 with the float 15 lowered, thereby preventing water from entering from the outside.

As explained above, according to this invention, a drainage hole is provided at the bottom of the air cleaner dust pan, and at the same time, a valve that opens and closes this drainage hole is connected via a link to a float that floats depending on the amount of water stored in the dust pan. This has the effect of allowing water to be drained as appropriate even while the engine is running, and also reliably preventing water from entering from the outside.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional air cleaner, FIG. 2 is a side view of a water draining device, and FIG. 3 is a sectional view of an embodiment of this invention. 10...Drain hole, 11...Drain valve, 13...Drain valve shaft, 15...
float.

Claims (1)

[Scope of utility model registration request] A drainage hole is formed at the bottom of the dust pan attached to the lower part of the air cleaner body, a valve is provided to close the drainage hole from the outside of the dust pan, and a float is provided that floats depending on the amount of water accumulated inside the dust pan. The valve and the float are connected via a valve arm that rotates about a bracket protruding from the bottom of the dust pan, and the valve is pushed down and opened by the rise of the float in accordance with the amount of water in the dust pan. An automatic water draining device for air cleaners featuring: