JPH08117534A - Flanged air filter - Google Patents

Abstract

PURPOSE: To obtain an air filter generating no damage in a frame member and a filter by airtightly winding a tapelike material around the outer periphery of a filter pack to surround the pack to form the frame member and forming a flange part to one end of the frame member. CONSTITUTION: A tapelike material is airtightly wound around the entire periphery of the side surface of a filter pack 2 obtained by folding a filter material in a zigzag pattern to form a filter frame member 3. A flange part 4 molded so as to an L-shape cross section by superposing a plurality of paper sheets or aluminum foils one upon another is provided in the entire periphery of one end of the filter frame member 3. Since the flange part can be certainly and closely bonded to the filter attaching frame of a filter box, the leak of the dust from the bonded part can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flanged air filter used for an air cleaning device for a building air conditioner, general industrial use, medical equipment, etc. or a clean room, and a method for manufacturing the same.

[0002]

2. Description of the Related Art In a conventional air filter, a plywood such as veneer plywood, a coated or plated iron plate, a stainless steel plate, an aluminum drawing material, etc. is used to assemble the frame body, and these frame bodies are assembled. The body is fastened and fixed to the filter mounting frame with bolts, and the filter and the mounting frame are brought into close contact with each other to prevent dust from leaking. For example, as shown in FIGS. 10 and 11, the frame body of the filter 12 is brought into close contact with the filter mounting frame 11, the filter 12 is held by the filter holder 13, and the bolt 12 is tightened and fixed to fix the filter 12 to the filter box 15.
It is attached to. Further, Japanese Patent Application No. 5-347584 proposes a filter frame formed by air-tightly winding a tape-like material around the outer periphery of a filter pack and surrounding the filter pack. However, since the frame body has low rigidity, tightening the frame body with bolts causes the frame body to buckle and damage the filter as in the case of the conventional filter frame body, so that the filter and the filter mounting frame are not closely attached. Have difficulty.

[0003]

Therefore, in the air filter described in the above-mentioned Japanese Patent Application No. 5-347584, which has advantages such as a reduction in the kinds of frame materials and simplification of the frame assembly work, the mounting of the filter is required. It was difficult to adopt the bolt tightening method, and there was a problem that the advantages could not be fully utilized. Therefore, when tightening the frame body and the filter mounting frame, it is desired to develop a structure that does not cause damage to the frame body and the filter even by the bolt tightening method. An object of the present invention is to solve the above problems and to provide an air filter that does not damage the frame and the filter when the frame is attached to the filter attachment frame.

[0004]

In order to achieve the above object, the flanged air filter of the present invention has a flange portion at one end of a frame body obtained by winding and surrounding a tape-like object on the outer periphery of a filter pack. It is characterized by being formed. In the flanged air filter, it is preferable that the flange portion is composed of a part of a tape-shaped material. According to the present invention, the filter pack is formed by winding and surrounding a tape-like material made of a thin material on the outer periphery of the filter pack, and a flange is provided on the entire circumference of one end of the filter frame, and the flange is closely attached to the filter mounting frame.・ It is fixed. The filter pack generally has no self-shape-retaining property, and as shown in Japanese Patent Application No. 5-347584, for example, a filter paper is folded in a zigzag shape and corrugated between the folded folds. Inserting a separator to keep the folds apart, or bending the filter paper in a zigzag shape and partially fixing the filter papers with a ribbon-shaped resin to keep the folded folds apart However, the structure of the filter pack may be such that the filter pack itself is provided with a self-shape-retaining property through a jig or the like, and is not particularly limited. The tape-shaped material is paper (paper made of inorganic fibers, organic fibers or a mixture of these fibers),
Nonwoven fabric, metal (aluminum, stainless steel, etc.), synthetic resin or the like may be used, and filter paper may be used as paper or non-woven fabric, or a combination thereof. The material of the flange portion is paper (paper made of inorganic fiber, organic fiber or a mixture of these fibers), metal thin plate (aluminum,
Made of iron, stainless steel, etc. ), A synthetic resin or the like, but it is desirable to use the same material as the frame body. In addition, the frame in the present invention is a Japanese Patent Application No. 5-347.
Although it can be manufactured according to the method described in No. 584, for example, a rubber adhesive, an epoxy adhesive, a polyurethane adhesive, or a thermoplastic resin adhesive is used between the outer periphery of the filter pack and the tape-like material. A frame can be formed on the outer circumference of the filter pack by air-tightly surrounding and surrounding the tape-like material on the outer circumference of the filter pack while applying another adhesive. The flange portion may be subsequently formed at one end of the frame body thus obtained, or may be formed integrally with the formation of the frame body.

[0005]

According to the air filter with flange of the present invention, the air filter is attached to the filter box by bringing the flange portion of the air filter with flange into close contact with the filter mounting frame, pressing the flange portion with the filter retainer, and tightening with bolts or the like. Therefore, the filter and the filter mounting frame can be brought into close contact with each other without damaging the frame and the filter. If you insert rubber packing between the flange and the mounting frame,
The close contact becomes more reliable, and the leakage of dust from this portion is further improved.

[0006]

Embodiments of the present invention will be specifically described below with reference to FIGS. 1 is a plan view of a flanged air filter of a first embodiment of the present invention, FIG. 2 is a side view of the flanged air filter of FIG. 1, and FIG. 3 is a line A of FIG.
It is sectional drawing along -A. 4 is a plan view of the flanged air filter of the second embodiment of the present invention, FIG. 5 is a side view of the flanged air filter of FIG. 4, and FIG. 6 is a line BB of FIG. It is sectional drawing along. According to the first embodiment of the present invention, as shown in FIGS. 1 to 3, the flanged air filter comprises a filter 1, a filter frame body 3 and a flange portion 4. Specifically, the filter medium is zigzag-shaped. A filter frame 3 is formed by air-tightly winding a tape-like material around the entire side surface of the filter pack 2 obtained by bending the filter pack 2, and a flange portion 4 is provided on the entire circumference of one end of the filter frame body 3. The flange portion 4 is formed into an L-shaped cross section by using, for example, one sheet or a plurality of sheets of paper, aluminum foil, plastic sheets, etc., which are laminated, and is bonded and fixed to the filter frame body 3. There is. According to the second embodiment of the present invention, as shown in FIGS. 4 to 6, the flange portion 4'is composed of a part of tape-shaped paper, metal foil or the like which is a material of the filter frame 3 '. Has been done. That is, when the tape-shaped material is wound around the filter pack 2, one end of the tape-shaped material is bent to form the flange portion 4 ', or after winding, the end is bent outward to form the flange portion 4'. Can be configured to form. The flanged air filter of the present invention is attached to a filter box as follows, for example. That is, as shown in FIGS. 7 to 9, the flange portion 7 of the air filter 6 with a flange is brought into close contact with the filter mounting frame 5, the flange portion 7 is held by the filter retainer 8, and the bolt 9 is tightened to tighten the air filter 6 Is attached to the filter box 10. Thus, the filter and the filter mounting frame can be brought into close contact with each other without damaging the frame and the filter. It should be noted that by inserting a rubber packing or the like between the flange portion 7 and the mounting frame 5, the close contact can be made more reliable, and the leakage of dust from this portion can be further improved. The flanged air filter of the present invention can be mounted alone or in combination.

[0007]

As described in detail above, when the air filter with flange of the present invention is mounted on the filter box, the flange portion surely comes into close contact with the filter mounting frame of the filter box. Leakage of dust can be prevented. Further, since the filter frame is not brought into contact with the flange portion by the force for tightening the filter, there is an advantage that the filter frame body is not damaged and no problem is caused in the function of the filter. When winding the tape-shaped material constituting the frame body of the flanged air filter of the present invention around the filter pack, one end of the tape-shaped material in the longitudinal direction is bent so that the flange portion is formed at the same time when the frame body is processed. Since it can be formed integrally,
Compared to the case where the flange part is made separately and bonded and fixed to the filter frame, the time required for manufacturing can be shortened, and the adhesion process between the flange part and the filter frame is eliminated, so reliability against dust leakage is improved. There is also an advantage to improve.

[Brief description of drawings]

FIG. 1 is a plan view of a flanged air filter according to a first embodiment of the present invention.

FIG. 2 is a side view of the flanged air filter of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a plan view of a flanged air filter according to a second embodiment of the present invention.

5 is a side view of the flanged air filter of FIG. 4. FIG.

6 is a cross-sectional view taken along the line BB of FIG.

FIG. 7 is a plan view showing a state in which the flanged air filter of the present invention is attached to a filter box.

8 is a cross-sectional view taken along the line CC of FIG.

9 is a detailed view of the filter mounting portion of FIG.

FIG. 10 is a plan view showing an example of mounting a filter by tightening a conventional bolt.

11 is a cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

 1 Filter 2 Filter Pack 3, 3'Filter Frame 4, 4'Flange Part 5 Filter Mounting Frame 6 Filter 7 Flange Part 8 Filter Retainer 9 Bolt 10 Filter Box 11 Filter Mounting Frame 12 Filter 13 Filter Retainer 14 Bolt 15 Filter Box

Claims (2)

[Claims] 1. An air filter with a flange, characterized in that a flange is formed at one end of a frame body obtained by winding and surrounding a tape-like material on the outer periphery of a filter pack. 2. The air filter with a flange according to claim 1, wherein the flange portion is formed of a part of a tape-shaped material.