JPH0337697Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present application relates to an air cleaner having a disk-like honeycomb type over-element.

Air cleaners used to filter the intake air of internal combustion engines have a filter element made of paper pleated in the shape of a chrysanthemum arranged around a porous inner cylinder.
A typical structure is that it is installed inside a case equipped with a suction pipe. Furthermore, as a device with a longer service life, a device using a so-called honeycomb structured over-element has been proposed. For example, as shown in Figure 2, one end is open,
A disk-shaped honeycomb type filter element 2 provided with a large number of flow passages 1 whose other end is closed is arranged in a case 4 provided with an outlet pipe 3 in the center. Dust-containing air flows into the honeycomb-type filter element 2 from one end surface, removes dust while flowing through the channel 1, and flows out to the other end.

However, in an air cleaner with this structure,
This has the drawback that the flow of dust-containing air is concentrated only in the center of the over-element 2, and the entire over-element 2 cannot be used effectively. Although it has been considered to add an upper case 6 with a suction pipe 5 to the one shown in FIG. 2 (see FIG. 3), it has not been used effectively for the same reason. Furthermore, as shown in FIGS. 6 and 7 of JP-A No. 57-140555, a cylindrical pass element having a structure in which an inlet is provided toward the center of the cylindrical case is provided on the side wall of the cylindrical case. Even if a fluid purifier is provided, the dust-containing air tends to flow toward the center of the case, so it is not effectively utilized.

Therefore, in the present application, an oil-impregnated disk-shaped honeycomb type filter element having a large number of flow passages, one end of which is open and the other end of which is closed, is arranged in a lower case with an outlet pipe provided in the center. By adopting a structure in which an upper case having a suction pipe provided tangentially to the side wall surface is attached to the open end side of the over-element, the entire over-element can be effectively utilized and the life of the air cleaner can be improved. It is something that

To explain by way of an embodiment, FIG. 1 shows an air cleaner of the present invention, in which a disk-like honeycomb type over-element 13 is disposed between upper and lower cases 11 and 12.
It consists of holding. The upper case 11 has an inverted cylindrical bowl shape, has a top plate 14 and a side wall 15, and has an annular flange 25 at its open end edge. side wall 1
5 is provided with a suction pipe 16 extending in the tangential direction thereof. The lower case 12 is funnel-shaped and has an outlet 18 in the center of the bottom wall 17.
It has an annular flange 19 at its open end. The honeycomb type over-element 13 is made by layering a flat plate material and a corrugated sheet material, and filling and sealing the peaks of the corrugated sheet material on one side and the troughs on the other side alternately. It has a conventionally well-known structure in which a flow path 20 is formed and both of the materials are impregnated with oil.

The honeycomb type over-element 13 is the lower case 1
2, and its bottom periphery is connected to the lower case 12.
It is placed on the inner peripheral end of the bottom wall 17 of. Further, a sealing agent is filled between the side surface of the honeycomb type over-element 13 and the side wall of the lower case 12. The upper case 11 is attached to the open end side of the honeycomb type over-element 13, and is connected to the lower case 12 and packing 2.
1 and are integrated by a fastener 22.

The air cleaner has an outlet 1 of the lower case 12.
8 is connected to a carburetor (not shown) of an internal combustion engine for use.

The dust-containing air flows in from the suction pipe 16 of the upper case 11 and reaches one side of the honeycomb-type filter element 13 while rotating inside the upper case 11 . From there, the dust-laden air is transferred to the honeycomb-shaped filter element 13.
flows through the flow path 20 of the lower case 12 and reaches the outlet 1 of the lower case 12.
8. During this time, dust particles in the air are trapped on the inner wall surface of the flow path 20. The dust-containing air flowing into the upper case 11 forms a swirl, a part of which travels along the inner periphery of the upper case 11 and flows diagonally toward the inlet end of the flow path 20 on the outer periphery of the honeycomb element 13. The particles collide and adhere to each other, forming a cake layer shaped like an avalanche (see Figure 4). The air in the center of the swirl flow passes through the flow path 20 in the center of the honeycomb-type filter element 13 and flows toward the outlet 18 . The dust trapped in the honeycomb type filter element 13 is moistened by the oil contained in the material, forming a porous cake layer.

As described above, the air cleaner of the present invention has an oil-impregnated disk-shaped honeycomb type filter element disposed inside the case, and the suction pipe is provided tangentially to the inner wall of the case. It is possible to circulate dust-containing air throughout the mold element, and it is also possible to trap a large amount of dust in the shape of a snow eave at the inlet end of the flow path of the honeycomb mold element, increasing the trapping efficiency.
Improve lifespan.

[Brief explanation of drawings]

FIGS. 1A and 1B are a sectional view and a plan view of the air cleaner of the present invention, and FIGS. 2 and 3 are sectional views of a conventional air cleaner. FIG. 4 is a partially enlarged view of the honeycomb type element of FIG. 1. 11... Upper case, 12... Lower case, 13...
...honeycomb type element, 16...suction pipe.

Claims (1)

[Scope of utility model registration request] Inside the lower case, which has an outlet in the center of the bottom wall,
An air cleaner having a honeycomb-type element, in which a disk-shaped honeycomb-type over-element impregnated with oil is arranged, and an upper case is attached above the honeycomb-type over-element with a suction pipe extending tangentially to the side wall.