JP2002113319A - Filter frame of air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter frame having small number of parts, corresponding to a thick filter and having an excellent filter supporting property. SOLUTION: In the filter frame for supporting a filter for inserting into an air duct of an air cleaning device, the filter frame is formed by making two cup bodies 4 having a wall 3 standing from a meshlike bottom surface 2 oppose each other and holding the filter between the cup bodies 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter frame for holding a filter inserted in an air duct for taking in air in an air purifying apparatus for purifying air in factories, stores, offices and the like.

[0002]

2. Description of the Related Art In order to keep air in factories and the like clean, it is necessary to take in clean air from the outside.
Many filters are inserted into the air intake duct to filter out dirt particles. Therefore, the filter becomes dirty and clogged with the filtration, and must be replaced at an appropriate cycle. In order to facilitate the replacement operation, the filter is held by a filter frame, and the filter frame is inserted into and removed from the duct.

FIG. 12 is an explanatory view showing a conventional filter frame. The filter frame A is formed by forming an extruded aluminum material or the like into a square shape with its groove a facing the inner periphery (since the duct is a square shape). ), A filter B having a square shape is fitted into the groove a, a mesh plate C is mounted on the front surface, and two V-shaped pressing rods D are fitted between the groove a and the filter B on the rear surface. To hold filter B.
Although plywood may be used instead of aluminum, the structure for holding the plywood is almost the same.

[0004]

In this case, since there are various types of filter thicknesses, it is necessary to prepare a large number of filter frames having the same size but different thicknesses. That was driving up costs. Also, the members require not only the filter frame but also a mesh plate and a holding rod, and the filter and the holding rod must be pushed into the groove of the filter frame. Poor. Further, since a sufficient holding force cannot be obtained with a presser bar or the like, there is a problem in that a corner or the like of the filter is turned up by wind pressure. In addition, when dirty, remove the filter frame,
The filter is removed from the filter frame and each is washed, but it takes a lot of time especially for cleaning the groove of the filter frame.

[0005] The present invention has been made to solve such problems, and embodies a filter frame which has a small number of parts, can cope with a wide range of thicknesses, and has excellent filter holding properties.

[0006]

SUMMARY OF THE INVENTION Under the above-mentioned problems, the present invention relates to a filter frame for holding a filter inserted into an air duct of an air purifying apparatus, wherein the filter frame comprises:
Provided is a filter frame in an air purifying apparatus in which two cup bodies each having a peripheral wall rising from a mesh-like bottom face face each other and a filter is sandwiched therebetween. Since the filter frame according to the present invention has the two cup bodies facing each other and the filter sandwiched between them, the above-described mesh plate and the holding rod are not required, and the number of parts can be reduced. Further, since the filter is simply sandwiched between the two filter frames, the time and effort for mounting the filter are simple.

Further, according to the present invention, the notches are formed at two predetermined positions on the peripheral wall from the upper end, and the two cups are brought close to each other with the notches facing each other so that the notches are fitted to each other. If the peripheral wall is superimposed, the two cup bodies only need to have the same shape, so that the manufacturing cost can be reduced. Also, the two cup bodies are fixed by passing fasteners between the peripheral walls, and at this time, if the overlapping amount of the peripheral walls can be adjusted, cups of the same shape but different filter thicknesses can be handled it can.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of a filter frame showing an example of the present invention, FIG. 2 is a plan view, FIG. 3 is a partially enlarged plan view, and FIG. 4 is a cross-sectional view taken along line AA of FIG. And two relatively shallow cup bodies 4 each having a rectangular shape with a peripheral wall 3 standing upright from the edge of the mesh bottom surface 2 forming a lattice formed by the vertical rails 2a and the horizontal rails 2b and having an open upper surface. Things.

The above-mentioned cup body 4 may be made of any material such as metal, plate material, resin, etc., but in this example, a molded article of resin made of polypropylene, polyethylene, nylon or the like is used in consideration of moldability and cost. OK. There are various sizes of the cup body 4, but the one in this example shows a standard one of 600 to 610 mm square.
Is 2 to 5 mm thick (the bottom 2 also)
The mesh formed by the vertical bars 2a and the horizontal bars 2b is set to be about 50 mm square.

In addition, in this embodiment, the bottom wall 5 having a width of about 20 mm is provided near the peripheral wall 3 of the bottom surface 2 and the bottom wall 5 is located at two symmetrical positions of the peripheral wall 3 sandwiching the corner.
A concave groove 6 which is depressed on the side is formed up and down. Therefore, although a total of eight concave grooves 6 are formed, the four lower right groups marked with ♭ are wide, and the four upper left groups marked with ♯ are narrow and wide. When a narrow object is put along the inside of the object, it is in a close contact relationship. It is to be noted that the direct purpose of forming the concave groove 6 is to make a head of a fastener described later be depressed therein so as not to protrude from the peripheral wall 3 (obstruction when sliding in the frame of the duct). Because it doesn't work). Further, a notch 7 is provided below the lower left corner of the peripheral wall 3 and to the right of the upper right corner so as to be cut out from the upper end by the thickness of the peripheral wall 3 and leave only the bottom wall 5, and a notch 7 is provided. Holes 8 are also formed in the four concave grooves 6 in the directions at the same height from the bottom surface 2.

According to the cup body 4 as described above, the same shape can be used for both sides. FIG. 5 is a plan view of a state in which two cup bodies 4 are combined, FIG. 6 is a front view, FIG. 7 is a side view, and FIG.
From the state where the two cup bodies 4 are arranged side by side with the opening part upside down, they are turned upside down so that the bottom surface 2 becomes farther away, and they are turned 90 ° and shifted in the lower left direction by 45 ° in the direction of the thickness of the peripheral wall 3 to approach them. If so, two places on the peripheral wall 3 would interfere with each other and would not approach any more.

However, in the case of this embodiment, the notches 7 are formed at the interfering portions, and the notches 7 are fitted to each other, so that the two cup bodies 4 are in a state of being engaged with each other, During this period, the filter 9 is held if the filter 9 is sandwiched. Then, the peripheral wall 3 is also polymerized in a close contact state, and the concave groove 5 also fits into the narrow groove inside the wide groove (see FIG. 5), so that the mutual deviation is regulated. . Further, since the holes 8 formed in the peripheral wall 3 are also brought into a state of being joined, the fasteners 10 such as bolts are inserted into the holes 8.
And the front and back cup bodies 4 are fixed at their thickness.

Since the filter frame 1 is constructed as described above, it can be inserted into and removed from a frame of a duct provided at a predetermined position of an air duct in an air cleaning device. In this case, the surface of the filter 9 is
a) Since it is held by the horizontal rail 2b (lattice mesh), it is not turned up by wind pressure or the like. At this time, if the projections 2ba that strongly press the filter 9 are formed in the lattice mesh (see FIG. 8), the holding of the filter 9 becomes stronger. In particular, since the filter 9 near the corner has a weak holding force and is easily turned up, it is appropriate to provide a large number of the projections 2ba near the corner and hold this portion more firmly.

By the way, if a normal bolt and nut are used as the fastener 10, it is troublesome and troublesome because the nut must be operated in the filter. Therefore, there is a method using a fastener capable of quick operation. For example, the one shown in FIG.
0a and the pin 10b, and when the pin 10b is inserted into the sleeve 10a, the sleeve 10a expands so as not to come out of the hole 8. The one shown in FIG. This is an example in which 10d is screwed.

FIG. 11 is a sectional view of a main part showing another example of the fastening structure. In this example, upper and lower long holes 11 are used in place of the holes 8 described above. In this way, the overlap margin (thickness) of the two cup bodies 4 even if they have the same shape.
Can be adjusted. As a result, even if the filter 9 has a different thickness, it can be held. It is to be noted that a plurality of holes 8 may be provided above and below instead of the long holes 11.
Although the adjustment of the thickness is stepwise, there is an advantage that it is hard to shift.

[0016]

As described above, the filter frame according to the present invention has two cups facing each other and holds the filter between them, so that a small number of components is sufficient and the mounting time is simple. In this case, if two notches are formed at predetermined locations on the peripheral wall, the two pieces may have the same shape, and thus the manufacturing cost can be reduced. If the degree of polymerization of the peripheral wall can be changed so as to be fixed, filters having the same shape and different thicknesses can be held.

In addition, the present invention can be expected to have the following effects. 1) Since the filter is sandwiched between the two cup bodies (not forcibly inserted with a tool), the filter is mounted in a normal shape without twisting or the like. 2) Since the four peripheral walls of the cup body overlap, the strength and rigidity are high. 3) By using a resin, sharp corners and the like can be eliminated to achieve high safety. In particular, since the radius of the corner can be increased, slipping is good when the duct is mounted on the frame. 4) If resin is used, it can be recycled and is environmentally friendly.

[Brief description of the drawings]

FIG. 1 is a perspective view of a filter frame showing an example of the present invention.

FIG. 2 is a plan view of a filter frame showing an example of the present invention.

FIG. 3 is a partially enlarged plan view of a filter frame showing an example of the present invention.

FIG. 4 is a sectional view taken along the line AA in FIG. 3 showing an example of the present invention.

FIG. 5 is a plan view showing an example of the present invention in a state where two cup bodies are combined.

FIG. 6 is a front view of a state in which two cup bodies showing one example of the present invention are combined.

FIG. 7 is a side view of a state in which two cup bodies showing one example of the present invention are combined.

FIG. 8 is a cross-sectional view of a main part in a state where two cup bodies showing one example of the present invention are combined.

FIG. 9 is a cross-sectional view of a main part of a fastening state of two cup bodies showing an example of the present invention.

FIG. 10 is a cross-sectional view of a main part in a fastened state of two cup bodies showing an example of the present invention.

FIG. 11 is a cross-sectional view of a main part in a fastened state of two cup bodies showing an example of the present invention.

FIG. 12 is a perspective view showing a conventional filter frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filter frame 2 Mesh bottom 3 Peripheral wall 4 Cup body 7 Notch 9 Filter 10 Fastener

[Procedure amendment]

[Submission date] October 11, 2000 (2000.10.
11)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hideyuki Imato 58 Kamitomi, Kurashiki-shi, Okayama Marugo Rubber Industries Co., Ltd. In-house (72) Inventor Kazuo 58 Kamitomii, Kurashiki-shi, Okayama Prefecture Marugo Rubber Industries Co., Ltd. (72) Inventor Takashi Miyake 417, Higashikawa-ku, Yakage-cho, Oda-gun, Okayama Prefecture (72) Inventor Koji Tsuji 2-1-1, Shiromi, Chuo-ku, Osaka City, Osaka Prefecture F-term in Bicchu Corporation (Reference) 3L080 AE04 AE05 4D058 JA12 KA01 KA23 KC12 KC32 KC37 SA20

Claims (4)

[Claims] 1. A filter frame for holding a filter to be inserted into an air duct of an air purifying apparatus, wherein the filter frame faces two cup bodies having a peripheral wall rising from a mesh-like bottom surface, and sandwiches the filter therebetween. Filter frame in an air purifying device. 2. A notch cut out from the upper end at two predetermined positions on the peripheral wall, and when the two cup bodies are brought close to each other with the notches facing each other, the notches fit together and the peripheral walls overlap. Frame in the air purifier of Japan. 3. The filter frame according to claim 2, wherein a fastener is passed between the peripheral walls and fixed, and at this time, the overlapping amount of the peripheral walls can be adjusted. 4. The filter frame according to claim 1, wherein the cup body is formed of a resin molded product.