JPH11221418A - Filter element structure of air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make incineration treatment of a filter element unit possible by using a waste paper-mixed thermoplastic resin for making a filter material frame to be installed in the outer circumference of a filter material. SOLUTION: This air cleaner element 4 comprises a filter material 40 having a plurality of corrugated bag parts 400 and a filter material frame 404 having a flange part 12 formed in the outer circumferential rim 402 of the filter material 40. The filter material 40 is made of a nonwoven fabric and the filter material frame 404 is made of a waste paper-mixed thermoplastic resin. The corrugated bag parts 400 of the filter material 40 are constituted of a corrugated plate 406 and a side face plate 409 for closing apertures 408 in the side face of the corrugated plate 406. On the other hand, the filter material frame 404 is constituted of an outer circumferential wall part 403 surrounding the outer circumference and the flange part 12, and the wall part 403 and the flange part 12 are integrally formed by injection molding to reliably provide the rigidity of the whole body of the filter element 4. The mixing ratio of the waste paper and the thermoplastic resin of the waste paper-mixed thermoplastic resin is controlled to be about 50-80% of waste paper by weight.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter element structure of an air cleaner which is mounted on an internal combustion engine and used for taking in air.

[0002]

2. Description of the Related Art A filter element of an air cleaner, which is mounted on a conventional internal combustion engine, extends along the outer periphery of the filter element (not shown) so as to cover the outer peripheral edge of a non-woven filter medium in order to secure the rigidity of the entire filter element. Arranged
A filter material frame having a brim portion integrally formed from a resin material base material obtained by mixing glass fiber, talc (rubber), or the like into polypropylene.

[0003] In order to ensure a sealing property with the filter element, an air cleaner case for storing the filter element and a cover of the air cleaner case sandwich an outer peripheral end of the flange of the filter element. A rubber gasket is attached to the outer peripheral end of the upper and lower surfaces to secure the sealing performance by pressing the upper and lower surfaces with the air cleaner case and cover.

[0004]

However, in the case of a substrate made of the above-mentioned conventional material, it is difficult to separate the above-mentioned mixture of the above-mentioned substrates, such as the above-mentioned polypropylene, glass fiber and talc. This is impossible, and the incinerator may be damaged due to so-called dipping peculiar to the resin, in which the resin dries when incinerated.

[0005] In particular, it is difficult to secure land for a disposal site for resin parts for automobiles in an urban area, and there are many difficulties in disposing the parts. The present invention has been made in view of such a problem, and abolishes a rubber seal used in various devices, and forms a filter material frame provided on an outer peripheral edge of a filter material of a filter element of an air cleaner by using a recycled paper-containing resin material. Accordingly, an object of the present invention is to provide a filter element structure of an air cleaner capable of incinerating the filter element alone.

[0006]

Therefore, the filter element structure of the air cleaner according to the first aspect of the present invention has the following features.
Since the filter medium frame of the filter medium is made of the waste paper-containing thermoplastic resin material, it can be configured as a lightweight filter element, and the function of absorbing and burning the thermoplastic resin by the fibers of the waste paper can be secured.

According to a second aspect of the present invention, there is provided a filter element structure for an air cleaner according to the first aspect, wherein the mixing ratio of the waste paper of the thermoplastic resin material containing the waste paper is determined by:
Since about 50% to about 80% by weight is mixed, incineration can be performed and the weight can be reduced, and the strength of the filter element can be ensured according to specifications.

According to a third aspect of the present invention, there is provided a filter element structure for an air cleaner according to the first or second aspect, wherein at least one of the convex portion provided on the flange portion of the filter medium frame and the convex portion is provided. The portion is sandwiched and elastically deformed by the case of the air cleaner and the flange of the cover, so that the sealing force increases and the sealing force can be improved. According to a fourth aspect of the present invention, there is provided the filter element structure of the air cleaner according to any one of the first to third aspects, wherein the waste paper-containing thermoplastic resin material has a melting point lower than the melting point of the waste paper. Since a resin is used, the function of the waste paper fibers to absorb and burn the thermoplastic resin can be maintained.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention. FIG. 1 is a schematic explanatory view showing a state where an air cleaner is disassembled when a filter element structure of an air air cleaner of the present invention is applied to an internal combustion engine. FIG. 2A is a perspective view showing the filter element, FIG. 2B is a schematic explanatory view showing a cross section taken along line 2B-2B in FIG. 2A, and FIG. 3 is a line 3A-3A in FIG. FIG. 2 is a schematic explanatory view showing a cross section along the line.

First, an air cleaner (not shown) for an internal combustion engine using the filter element of the present invention will be described. As shown in FIG. 1, the air cleaner 2 includes an air cleaner case 6 that stores the filter element 4 and a cover 8 that covers the air cleaner case 6.

An air cleaner case 6 and a cover 8
Are provided with flanges 14 and 16 for sandwiching the flange 12 of each filter medium frame 404 described later in a sandwich manner, the air cleaner case 6 has an intake 18 for taking in air, and the cover 8 is An outlet 20 for taking out the filtered air filtered by the element 4 is provided.
The air cleaner element 4 includes a filter medium 40 having a plurality of wavy bag portions 400 and a filter medium 4 as shown in FIG.
And a filter medium frame 404 having a brim portion 12 disposed on the outer peripheral edge 402 of the rim.

The filter medium 40 is formed of a non-woven fabric, and the filter medium frame 404 is formed of a waste paper-containing resin material described later. Further, the wavy bag portion 400 of the filter medium 40 is
06 and a side plate 409 for closing the opening 408 on the side surface of the corrugated plate 406. Further, the filter medium 40 configured as described above is disposed in an injection molding die in the same manner as in the injection molding of a conventionally known air cleaner element, and is placed in a space spaced from the filter medium 40 in the mold. The filter element 4 of the air cleaner as shown in FIG. 2 is formed by molding the filter medium frame 404 integrally with the filter medium 40 by heating and melting the above-mentioned waste paper-containing thermoplastic resin material and injecting it.

The brim portion 12 of the filter medium frame 404 is
As shown in FIG. 3, convex portions 50 a and 50 b projecting from the upper and lower surfaces of the brim portion 12 are provided along the outer peripheral edge 402 of the filter medium 40 so as to surround the outer peripheral edge 402. The hardness of at least the protrusions 50a and 50b of the flange 12 and the protrusions 50a and 50b is configured to have a shore hardness of about 20 to 100, and is formed so as to have elastic force.

Therefore, when assembled in the direction of arrow Y shown in FIG. 1, the flange 12 of the filter medium 40 is sandwiched between the flanges 14 and 16 of the case 6 and the cover 8, and the flange 12 and the convex Since at least the projections 50a and 50b of the projections 50a and 50b are configured so as to be able to exhibit a sealing effect by being compressed and deformed, it is not necessary to separately provide a rubber gasket or the like as in the above-described conventional technology.

As shown in FIG. 2, the filter medium frame 404 includes an outer peripheral wall 403 surrounding the outer periphery of the filter medium 40 and a flange 12.
, And are integrally formed by injection molding, and the rigidity of the entire filter element 4 can be secured. Further, as shown in FIG. 2, the height H1 of the outer peripheral wall portion 403 can be set according to the design specifications according to the strength of the non-woven filter medium 40 as shown in FIG. The height H1 may be provided so as to cover the entire outer periphery of 400, and in this case, the strength can be improved.

Since the filter medium 40 forms the bag-like corrugated bag 400 by the corrugated plate 406 and the side plate 409 as described above, the outer peripheral wall 403 of the filter medium frame 404 is replaced with the outer peripheral wall of the filter medium 40. Since the dust contained in the air can be captured by the corrugated bag 400 without surrounding the entirety of the outer wall 403, the outer peripheral wall 403 is not required.
Can be reduced by, for example, the height H2 shown in FIG. 2, and the costly resin can be saved.

Further, since the waste paper-containing thermoplastic resin material used above is used, it is possible to incinerate the used filter element 4 and to make the air cleaner lightweight and inexpensive. Cut off. Next, the used paper-containing thermoplastic resin material used above will be described. The base material of the waste paper-containing thermoplastic resin of the present invention is obtained by mixing and kneading pulp obtained by pulverizing waste paper into a thermoplastic resin in a molten state by heating. The mixing ratio of the thermoplastic resin and the waste paper kneaded is about 50% to 80% by weight of the waste paper pulp mixed therein. is there.

Further, as described above, the base material of the used paper-containing thermoplastic resin portion can be used to form the filter element 4 without any change in the conventional manufacturing method of injection molding, so that it has versatility. Moreover, since glass fiber is not used unlike the conventional products, the filter element 4 which is inexpensive and lightweight can be manufactured. When the incineration treatment is performed after using the filter element 4 made of the waste paper blended thermoplastic resin material formed as described above, the fibers of the pulp burn while absorbing the polypropylene resin, and dipping does not occur. Damage can be prevented.

In addition, any filter that can be incinerated after using the filter element 4 formed from the base material of the waste paper-containing thermoplastic resin can be approved as burning dust. The mixing ratio of the pulp of the waste paper is about 50% to 80% by weight of the thermoplastic resin. However, as the content of the waste paper increases, the strength of the waste paper decreases. , About 50% to 55% are preferred.

The used paper may be recycled pulp such as newsprint, preferably used paper such as cardboard. In essence, any paper may be used, that is, pulp. Further, in the case of the above embodiment, the thermoplastic resin constituting the base material used polypropylene, but is not limited thereto, and may be, for example, a polyolefin resin such as the polypropylene or polyethylene, and a pulp made of the used paper. Any thermoplastic resin having a melting point below the temperature at which it decomposes itself, for example, up to about 300 ° C. may be used.

For example, polypropylene is usually molded at about 180 ° C. when an air cleaner is made. If a thermoplastic resin having a melting point exceeding the cellulose decomposition temperature which is higher than that is used, the pulp is decomposed in the molding step. Might be. Then, when the pulp is decomposed as described above, the pulp structure is broken, the fibers are not fibers, and the pulp is in a powder state.

That is, when the pulp is heated to a high temperature, the cellulose component of the pulp itself is decomposed, so that water evaporates to become a single cellulose molecule, and when it reaches the cellulose decomposition temperature, it becomes water and carbon dioxide gas and becomes ash. Would. When the pulp has no fiber, the function of absorbing the resin and mixing it with air to burn and lose gas is lost, and the pulp becomes weak because of the absence of the fiber.

Therefore, the used paper-containing thermoplastic resin material of the present invention can exhibit its function and effect for the first time by using the above-mentioned thermoplastic resin having a melting point at such a temperature that the pulp of the used paper does not decompose. . The size of the pulp from which the used paper used as the base material is ground is, for example, a center diameter of about 80 μ (micron) and a length of about 0.5 to
Since it is flocculent at about 3.3 mm, it can be pumped inside the pipe by air pressure. However, the size and shape are not limited to this, and for example, waste paper (pulp) cut with a shredder or the like ) May be mixed into the thermoplastic resin kneaded, and may be any size that can hold the fibers of the pulp.

[0024]

As described above in detail, according to the filter element structure of the air cleaner according to the first aspect of the present invention, the filter medium frame disposed on the outer peripheral edge of the filter medium is made of a thermoplastic resin material mixed with waste paper. Lightweight, inexpensive, and capable of incineration of used filter elements. Use of the above-mentioned waste paper-containing thermoplastic resin material reduces damage to the incinerator due to resin-specific dipping that occurs when the resin is burned. can do.

According to the filter element structure of the air cleaner of the second aspect of the present invention, in the configuration of the first aspect, the mixing ratio of the waste paper of the waste paper-containing thermoplastic resin material is about 50% to 50% by weight. Since about 80% of the filter element is mixed to enable the incineration treatment of the used filter element, it can be recycled. According to the filter element structure of the air cleaner of the present invention described in claim 3,
3. The configuration according to claim 1, wherein the filter element is provided on a case and a cover of the air cleaner by elastic deformation of at least the convex portion provided on the flange portion of the filter medium frame and the convex portion of the flange portion. 4. When stored, the sealing force increases and the sealing force can be improved.

According to the filter element structure of the air cleaner of the present invention described in claim 4, in the configuration according to any one of claims 1 to 3, the thermoplastic resin material containing the used paper has a melting point lower than the melting point of the used paper. Since the thermoplastic resin at a temperature is used, the fibers of the waste paper can absorb the thermoplastic resin and burn, without being deformed or damaged during molding of the filter element.

[Brief description of the drawings]

FIG. 1 shows one embodiment of the present invention, and is a schematic explanatory view showing a state where an air cleaner is disassembled when a filter element structure of an air air cleaner of the present invention is applied to an internal combustion engine.

FIG. 2 is an explanatory view of the filter element of FIG. 1,
(A) is a perspective view showing the filter element, (B)
FIG. 2 is a schematic explanatory view showing a cross section taken along line 2B─2B in FIG.

FIG. 3 is a schematic explanatory view showing a cross section along line 3A-3A in FIG. 1;

[Explanation of symbols]

 Reference Signs List 2 air cleaner 4 filter element 6 air cleaner case 8 cover 12 flange 40 filter material 50a, 50b convex portion 400 wavy bag portion 402 outer peripheral edge 403 outer peripheral wall portion 404 filter material frame 406 corrugated plate 408 side opening 409 side plate

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ryo Arita 5-33-8 Shiba, Minato-ku, Tokyo Inside Mitsubishi Motors Corporation (72) Inventor Yukihiro Hattori 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation (72) Inventor Hiroyuki Nishikawa 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation (72) Kenichi Tange 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Within Industrial Co., Ltd. (72) Inventor Zenya Ota 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Industrial Co., Ltd. (72) Inventor Shigeo Tsukagoshi 2-21-3 Kamariya Minami, Kanazawa-ku, Yokohama, Kanagawa Prefecture (72) Inventor Miya Hisawa Miya 2-8-C, Miigaoka, Aoba-ku, Yokohama-shi, Kanagawa Prefecture (72) Inventor Kiyoshi Onuma 5-5-1 Haramachida, Machida-shi, Tokyo (72) Inventor Sato ▲ Issue ▼ Hyogo prefecture 12-16, Rokuritsuso-cho, Ya-shi (72) Inventor Jun Sato 12-16, Rokuritsu-so-machi, Ashiya-shi, Hyogo (72) Inventor Ryo Takenaka 45-67, Nakayama-cho, Nara-shi, Nara (72) Inventor Akihiro Nakayama Kita-Katsuragi-gun, Nara 2-11-11 Hirosedai, Kawai-machi

Claims (4)

[Claims] 1. A filter element comprising a non-woven filter medium and a filter medium frame disposed on an outer peripheral edge of the filter medium, a case for storing the filter element, and a cover for covering the case. In an air cleaner having a delivery port, the filter element frame of the air cleaner is characterized in that the filter medium frame is made of a waste paper-containing thermoplastic resin material. 2. The mixing ratio of the thermoplastic resin and the waste paper of the waste paper-containing thermoplastic resin material is about 50% by weight of the waste paper.
The filter element structure of an air cleaner according to claim 1, wherein the filter element structure is mixed with about to about 80%. 3. A filter provided along a peripheral edge of the filter medium, the filter medium frame having a convex portion protruding from upper and lower surfaces of a flange portion, and at least one of the flange portion and the convex portion. The filter element structure of an air cleaner according to claim 1 or 2, wherein the hardness of the convex portion is set to a shore hardness of about 20 to about 100. 4. The thermoplastic resin material containing waste paper, wherein the thermoplastic resin has a melting point lower than the melting temperature of the waste paper mixed therein. Air cleaner filter element structure.