JPH0622406Y2 - Filter element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a honeycomb type filter element used for filtering gas, liquid and the like.

(Prior Art) As an air cleaner or an oil filter used in an internal combustion engine, a honeycomb-shaped filter element 20 as shown in FIG. 4 is widely used because it can secure a large filtration area in a constant volume. .

That is, a corrugated filter material 21 and a flat plate filter material 22 of a certain size that have been corrugated are overlapped by a required number of steps so that the corrugated filter material 21 is on the upper side, and one corrugated filter material is on one side edge (front side in the figure). 21 is filled with a sealing adhesive 23 in a certain width in a mountain portion facing the lower flat filter medium 22, and at the other side edge, a certain width is applied in a valley portion facing the upper flat filter medium 22. 23 are filled to form a large number of bag-shaped ventilation holes whose front ends or rear ends are alternately closed, and the side circumference except for the front and rear portions is covered with a cover.

(Problems to be solved by the invention) By the way, although the conventional filtration element has an advantage that a large filtration area can be obtained under a constant volume,
Since both the inlet side and outlet side end faces of the fluid are occluded by the adhesive for sealing, the flow resistance becomes high for the filter that processes a large amount of fluid, and the filtration function only deteriorates. Not
The life of the element will be shortened.

(Means for Solving the Problems) The present invention is directed to a pair of both side pieces integrated at one end and an upper wall piece, and a downward groove portion having the other end opened, and both side pieces and the bottom wall integrated at the other end. A bent filter medium is formed by alternately connecting upward grooved portions with one open end, and the downward grooved portion and the upward grooved portion of this curved filter material are aligned at both ends and overlap each other. Auxiliary filter media having corrugated corrugations formed at the ends of the bent filter media were arranged alternately between the filter media.

(Function) The fluid to be treated enters the inside of the filter element through the inflow port formed by the auxiliary grooved material which divides the downward groove part having three U-shaped filter walls and other openings, and the both side walls As it traverses, the upper wall piece and the auxiliary filter medium are also traversed, while dust is captured by the filter medium. At this time, the upper wall piece and the lower wall piece arranged on both sides of the auxiliary filter medium come into contact with the corrugated member provided on the auxiliary filter medium, and the corrugate forms an air passage to smoothly flow in the passage, and Adhesion is prevented and the entire filtration surface is used effectively.

(Embodiment) FIG. 1 shows an embodiment of the present invention, in which a filter element 1 is composed of a bent filter material 2 and an auxiliary filter material 3 each having a certain length and formed of a filter material such as nonwoven fabric or filter paper. The filter material 3 is stacked in a required number of stages with the filter material 3 sandwiched between the upper and lower curved filter materials 2, and the side circumference except the front surface and the rear surface is covered with a cover 4 of the filter material or synthetic resin.

As shown in FIG. 2, the bent filter medium 2 has a rectangular side wall piece 11 and a triangular upper wall piece 12 that abut at one end (the rear end in the figure), and has a triangular shape in a plane triangle shape and the other end. Downward groove portion A (front end in the figure) opened, and the other end (front end)
Rectangular side pieces 11 and triangular lower wall piece 13 that abut at
Thus, the upward triangular groove portion B having a triangular shape and a U-shaped cross section and the other end (rear end) of which is open forms alternating and continuous bends. As shown in FIG. 3, the bent filter medium 2 has the boundary filter line ₁ of the upper wall piece 12 and the lower wall piece 13 as shown by the solid line in the material filter medium 5.
Boundary lines l _{2 of} are alternately provided with a constant gap (width of the side piece 11) as shown by dotted lines, and are bent downward or upward by a molding roll along the slanted lines l ₁ and l ₂ at the front end and the rear end. Pieces 11 are formed by integrally adhering the abutting portions of each other.

The upper and lower bent filter papers 2 are stacked so that the downward groove parts A and the upward groove parts B are aligned, and the auxiliary filter material 3 is disposed between the upper and lower bent filter media 2 as described above, and the lower bent filter media 2 is arranged. 2, the upper surface of the upward groove portion B and the lower surface of the downward curved groove portion A of the upper curved filter material 2 are closed, and at the front end side, the lower edge of the auxiliary filter material 3 and the lower curved filter material 2 are closed.
The upper edge of the auxiliary filter medium 3 and the lower edge of the upper curved filter medium 2 are bonded to each other by the adhesive 6 on the rear end side. Auxiliary filter medium 3 is on both sides
3a is flat, and the central portion 3b is corrugated.
Further, the upper surface of the upward groove portion B of the uppermost bent filter material 2 is closed by the upper wall of the cover 4 and the front edge is bonded and sealed with the adhesive 6, and the lower surface of the downward groove portion A of the lowermost bent filter material 2 is closed. Is closed by the upper wall of the cover 4 and the rear edge is joined and sealed with an adhesive 6.

When the fluid to be processed enters the filter element 1 from the downward groove portion A of the bent filter medium 2 on the front side, it is filtered across the left and right side walls 11 and enters the adjacent clean room, and the upper wall piece 12 and the lower wall piece 13 The corrugated tops of the central portions 3b of the auxiliary filter media 3 disposed between them advance to the back by the flow path formed, and are filtered across the surfaces of the upper wall piece 12 and the auxiliary filter media 3 from the upward groove portion. It flows to the back.

(Effects of the Invention) As described above, according to the present invention, the bent filter media having the downward groove part and the upward groove part are overlapped with each other so that the upward and downward groove parts are aligned with each other. An auxiliary filter medium having a flat surface and a corrugated central portion is disposed, and the tops of the central corrugations of the auxiliary filter medium are respectively brought into contact with the upper wall piece and the lower wall piece of the bent filter medium to form a flow passage, so that the upper and lower wall pieces are The density of the auxiliary filter medium is prevented, so that all of the filter medium disposed in the element can be used as the filter surface, the life is extended, and the flow resistance can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view in which a part of an embodiment of the present invention is cut away, FIG. 2 is a partial perspective view showing an arrangement state of upper and lower bent filter media and auxiliary filter media, and FIG. 3 is a developed state of the bent filter media. And FIG. 4 is a perspective view of a conventional filtration element. 1 ... Filter element, 2 ... Bent filter material 3 ... Auxiliary filter material, 11 ... Side piece 12 ... Upper wall piece, 13 ... Lower wall piece A ... Downward grooved portion B ... Upward grooved portion

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Reference number within the agency FI Technical indication location F01M 11/03 B 7443-3G F02M 35/024 Q 9247-3G

Claims (1)

[Scope of utility model registration request] 1. A downwardly-grooved groove portion having two ends and an upper wall piece which are adhesively sealed at one end, and an upwardly-opening groove portion which has both ends and adhesively sealed at the other end. Parts are alternately and continuously formed to form a bent filter medium, and the downward groove-shaped part and the upward groove-shaped part of the bent filter medium are aligned and overlapped with each other, and an auxiliary filter medium in which a corrugation is formed between the upper and lower bent filter media is formed. A filter element arranged.