JPH0131297Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present application relates to a honeycomb filter element for an air cleaner used, for example, to filter intake air of an internal combustion engine.

The honeycomb type filter element used in conventional air cleaners is made by overlapping a flat plate material 1 and a corrugated plate material 2 with a central core 3, as shown in Fig. 4.
The crests 4 of the corrugated sheet material 2 on one side and the troughs 5 of the corrugated sheet material 2 on the other side
It has a structure in which a large number of elongated channels 6 are provided between one side and the other side. This structure has a larger overarea than a pleated filter element made of folded paper.
Although it has the advantage of long life, it has the following disadvantages. In other words, as shown in Figure 5,
Dust-containing air flowing in from the open end of the elongated channel 6 of the honeycomb filter element is passed through the wall surface of the elongated channel 6, but the open end of the elongated channel 6 is free from dust particles in the air. It is easy to collide and adhere, leading to early blockage. Such early clogging is particularly noticeable when the honeycomb filter element is oil-impregnated. This is because oil-impregnated elements tend to form a dust cake layer on the material.

Therefore, the present invention has developed a honeycomb in which a layer of flat plate material and a corrugated plate material are stacked one on top of the other, and a large number of elongated channels are formed between one end face and the other end face, one of which is closed and the other is open. In the type filter element, the ridges of the corrugated sheet material on one end surface and the troughs of the corrugated sheet material at a predetermined length from the other end surface are filled and sealed, and a flow opening is provided in the material between the troughs and the other end surface. This structure alleviates the overload at the open end of the elongated channel and prevents early clogging. To explain this by way of an example, FIGS. 1 and 2 show a honeycomb type filter element 10 of the present invention, which includes a flat plate material 11 made of rectangular paper and a corrugated plate material 12 made by corrugating the same material. The overlapped material is the center core 13
The flat plate material 11 at the end of the winding layer is wrapped around the winding layer, and the flat plate material 11 at the end thereof is wound several times and the winding is stopped. Mountain portion 14 of corrugated plate material 12 on one end surface of honeycomb filter element 10
are filled and sealed with a sealing material such as hotmelt, and the trough 15 of the corrugated sheet material 12 located at a predetermined distance from the other end surface is similarly filled and sealed with a sealing material over a certain width. ing. In the case of this embodiment, the predetermined length is approximately 5 of the length from one end surface to the other end surface.
% value. Between the other end face and one end face,
Numerous elongated channels 1 with one end open and the other end closed
6 is formed. The portion between the other end surface and the trough 15 of the filled and sealed corrugated sheet material 12 constitutes a first filter portion 17, and the portion between the trough and one end surface constitutes a second filter portion 18. .

A flow opening 19 is provided in either or both of the flat plate material 11 and the corrugated plate material 12 of the first filter section 17 . The flow opening 19 is provided in the vicinity of the seal portion of the trough 15 of the corrugated sheet material 12, and has a limited hole diameter.

The honeycomb filter element 10 is impregnated with oil such as lubricating oil if necessary, and is placed in a case (not shown) for use.

Dust-containing air is filtered through honeycomb filter element 1.
0, flows through the side wall of the elongated channel 16, passes through the side wall of the elongated channel 16, and flows out from the other end surface. When the dust-containing air flows in from the other end surface, a part of the dust-containing air flows into the elongated flow path 1 of the first filter section 17.
6 and flows through the chamber A (FIG. 3) adjacent to the flow path 6 and flows out into the elongated channel 16 through the flow opening 19. During this time, dust particles are collected in the overchamber A. The remainder of the dust-containing air is captured by the second filter section 18 of the elongated channel 16. Some of the dust particles in the dust-containing air are
Since the dust particles are collected by the first filter section 17, the speed at which dust particles are captured and blocked at the open end of the elongated flow path 16 becomes slower, and early clogging of the open end of the elongated flow path 16 is prevented. . The first filter section 17 collects not only dust particles due to inertial collision, but also dust-containing air that is trapped due to the flow of the dust-containing air through the circulation opening 19.

As described above, the present invention forms a number of elongated channels, one of which is open and the other of which is closed, by rolling layers of flat plate material and corrugated plate material and forming between one end surface and the other end surface. In a honeycomb type filter element, the crests of the corrugated sheet material on one end surface and the troughs located at a predetermined length from the other end surface are filled and sealed, and the part of the material between the troughs and the other end surface is filled and sealed. Since the structure is provided with a flow opening, overload at the open end of the elongated flow path can be reduced, and early clogging of the filter element can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a honeycomb filter element of the present invention, FIG. 2 is a partially exploded view of the filter element in FIG. 1, and FIG. 3 is an enlarged partial sectional view of the filter element in FIG. 1.
FIG. 4 shows a partially exploded view of a conventional element, and FIG. 5 shows an enlarged partial cross-sectional view of the element shown in FIG. 11...Flat plate material, 12...Corrugated plate material, 14...
... Filled and sealed peak portion, 15... Filled and sealed valley portion, 19... Distribution opening.

Claims (1)

[Scope of utility model registration request] A flat sheet material and a corrugated sheet material having peaks and troughs are layered one on top of the other, and a number of elongated channels are formed between one end surface and the other end surface, one of which is closed and the other is open. In the honeycomb type filter element, the ridges of the corrugated sheet material on one end surface and the troughs of the corrugated sheet material at a predetermined length from the other end surface are filled and sealed, and the gap between the filled and sealed troughs and the other end surface is filled and sealed. A honeycomb type filter element characterized by a structure in which a flow opening is provided in the material.