JPS60193515A - Air filter fitting apparatus and its fitting method - Google Patents

Abstract

PURPOSE:To make execution of fitting and detachment for an air filter frame easy, to increase durability of a gasket and to enable shielding function to maintain for a long period by fixing the air filter frame to a frame body with a clamping mechanism. CONSTITUTION:A clamping function is provided to the lower part of a frame body 1 fitted to a lifting tackle 5. A filter frame 2 is abutted on an opening edge face 11 of the frame body 1 via an elastic gasket 3 and sandwiched between the frame body 1 and the clamping mechanism 9. The lifting tackle 5 is hung almost vertically from a ceiling or the like. The clamping mechaism 9 consists of a shielding plate 91 by which the filter frame 2 is supported from a lower part and a screw means 51. The tip 210 of an extension part 21 is abutted on a bottom face of the frame body 1 and an edge face 11 of the frame body is inhibited from biting into the elastic gasket excessively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-performance air filter mounting device and a method for mounting the same to a fixed part such as a ceiling.

Conventional technology Semiconductors, electronics, precision industry, and pharmaceuticals.

Ultra clean rooms are used in the food industry.

This is achieved by installing a high-performance air filter on a grid-like frame made of drawn aluminum or the like installed on the ceiling, and using this filter to purify the air that is sent in from the ceiling. The air filter is glass.

For example, it is constructed by folding ceramic, cellulose asbestos paper, etc. into an accordion shape.

Filtration efficiency for 0.3 μm DOP particles is 99.97%
It has higher performance than above. However, even if there is a slight gap between the filter frame and the lattice frame, air leakage will occur and the cleaning of the two rooms will be hindered. The following methods are used to prevent this.

As shown in FIG. 1, a rubber gasket 300 is applied to a part of the air filter frame 200, and the weight of the air filter 6 and the filter frame 200 and the air flow pressure are applied to the frame body 1.
00 and the filter frame 200 are kept airtight (
Jitsukō 58-47937). but.

Since the surface of the frame body 100 inevitably has fine irregularities, it is not possible to maintain the two in a completely airtight state. As shown in FIG. 2, there has also been an attempt to tighten the filter frame 201 with a fastener 501 of the frame body 101 and seal it by utilizing the elastic deformation of the gasket 301. (Jitsukai Showa 5
6-121426). However, this has the drawback that the tightening cannot necessarily be done uniformly over the entire surface, and that a slight gap may be created between the filter frame 201 and the filter frame 201 due to creep deformation due to long-term use.

Further, as shown in FIG. 3, the filter frame 201 and the frame body 101 are joined via a rubber gasket 302.

It has also been proposed to prevent air leakage by disposing a sealing material made of caulking material 303 around the outer periphery of the filter frame 201 (Utility Model Publication No. 56-121425). This method requires complicated work such as attaching and replacing the filter 6 and requires a lot of time. Furthermore, as shown in FIG.
A method is also known in which a liquid sealant 304 is placed in the sealant to prevent air leakage (Japanese Patent No. 643375). In this method, the joint portion of the U-shaped cross-sectional groove 102 that accommodates the liquid sealant 304 must be sealed to maintain an airtight state, and the work is extremely complicated.

OBJECTS OF THE INVENTION An object of the present invention is to provide an air filter mounting device that allows easy installation and removal of an air filter. Another object of the invention is.

To provide an air filter mounting device having a simple configuration and excellent durability. Still another object of the present invention is to provide a method for attaching this air filter attachment device to a fixed part such as a ceiling.

Light appearance! 1 The air filter mounting device of the present invention has the following features: (1) vertically;
(2) a plurality of mutually connected frames each having a U-shaped cross section and having an opening facing downward; (4) the clamp has a mechanism, and (4) the clamp has a filter frame that is held between the mechanism and the frame;
(5) The filter frame is configured such that it comes into contact with the end face of the frame opening via an elastic gasket, and the extension from the filter frame comes into contact with the bottom face of the frame, thereby achieving the above purpose. be done. The air filter mounting device can be installed by (1) supporting and fixing a large number of interconnected frames each having a U-shaped cross section with their openings facing downwards using hanging fittings extending vertically from a desired fixing part; (2) An elastic gasket is fixed to an air filter frame having an extending portion and holding an air filter in an airtight manner so as to be surrounded by the extending portion and the filter frame.

(3) The filter frame via the elastic gasket.

(4) the filter frame is brought into airtight contact with the end surface of the opening of the frame so that the extension part is in contact with the bottom surface of the frame;
A tightening mechanism provided on the frame body and the hanging metal fitting and located below the frame body is held between the frame body and the hanging metal fitting.

This achieves the above objective. Fixing of the elastic gasket to the air filter frame is achieved by (1) arranging a mold release auxiliary frame opposite to the extending portion of the filter frame, and (2)
A liquid gasket is injected into a space formed by the filter frame, the extension portion, and the auxiliary frame.

and (3) after the liquid gasket has hardened, the auxiliary frame is released from the mold.

large coal The present invention will be described below with reference to one embodiment.

As shown in FIG. 5, the air filter mounting device of the present invention includes hanging metal fittings 5. The frame body 1 attached to this hanging fitting 5. A tightening mechanism 9 is provided on the hanging fitting 5 and located below the frame 1.

The device of the present invention further includes an air filter frame 2 and an air filter frame extension portion 21. The filter frame 2 abuts against the opening end surface 11 of the frame 1 via the elastic gasket 3, and is held between the frame 1 and the tightening mechanism 9. A tip 210 of the extending portion 21 is in contact with the bottom surface of the frame 1. The hanging fitting 5 is suspended almost vertically from a ceiling or the like.

The material is 1, for example, aluminum or iron. The tightening mechanism 9 has a shielding plate 91 that supports the filter frame 2 from below, and a screw means 51 that presses the shielding plate 91 against the filter frame 2 from below. This shielding plate 91 is arranged in a shape corresponding to the frame body 1. Therefore,
It has a function of shielding the joint between the frame body 1 and the filter frame 2 from the field of view and improving the appearance of the device. The screw means 51 is composed of two, for example, a screw groove 52 and a nut 92.

The extending portion 21 has its tip 210 in contact with the bottom surface of the frame 1, and the frame end surface 11 in contact with the elastic gasket 3 on the filter frame.
This prevents it from getting too deep inside.

These filter frame 2 and extension part 21 are one example.

Aluminum, iron, plywood. It may be made of plastic or the like. The elastic gasket 3 has a resin that hardens at room temperature and has surface tackiness after hardening.

A material that is highly elastic and tightly adheres to the filter frame 2 is used. Examples include room temperature curing two-component modified urethane resins and silicone resins. Among them, those having appropriate viscosity and pot life are appropriately selected from the viewpoint of chemical properties, sealing properties, etc. Further, a compressive strength retaining base material 4 that performs a creep prevention function and a compressive strength retaining function is appropriately embedded inside the first elastic gasket 3 as necessary.

For example, a coil 41° as shown in Fig. 6, a gold coil as shown in Fig. 7, etc. 1i42. Cloth 43 as shown in FIG. There are leaf springs 44 as shown in FIG. 9 or leaf springs 45 with a U-shaped cross section as shown in FIGS.
Buried inside. This gasket 3 is attached to the filter frame 2 in the following manner, for example: As shown in FIG. The auxiliary frame 8 thus prepared is placed facing the filter frame extension part 21. Auxiliary frame 8 is a removable type.

The material is not limited. Next, this filter frame 2
The liquid gasket resin is injected into the space formed by the extended portion 21 and the auxiliary frame 8. When the base material 4 is employed, it is buried therein in advance. After the liquid gasket resin has hardened, the auxiliary frame 8 is removed as shown in FIG. 11Tb). Then, the elastic gasket 3 with three surfaces of adhesive is firmly adhered to the filter frame 2 and the extension portion 21. The elastic gasket 3 shown in FIG.
Since it is shaped like a letter, it has high elasticity and thus provides good adhesion. Figure 10 (al and 10
Other embodiments using the elastic gasket 3 shown in Fig. 1 are shown in Figs. 12, 13, 14, and 15.

In either case, the frame body and the air filter frame are in close contact with each other in an airtight manner via an elastic gasket 3 having a leaf spring 45 having a U-shaped cross section. In particular, in the embodiments shown in FIGS. 14 and 15, the elastic gasket 3 is pressed by the tip 130 of the frame 13 housing the fan 12, so that the airtightness between the fan housing frame 13 and the filter frame 2 is further improved.

According to the air filter mounting device of the present invention, as described above,
The air filter frame is simply tightened by fixing it to the frame using a mechanism, so it is easy to install and tighten the air filter frame.
Easy to remove and install.

Moreover, excessive digging of the air filter frame into the inside of the elastic gasket is prevented, and as a result, the durability of the elastic gasket is improved and its sealing function can be maintained for a long period of time.

[Brief explanation of drawings]

1, 2, 3, and 4 are front sectional views of main parts of a conventional air filter mounting device, respectively, and FIG. 5 is a front view of main parts showing an embodiment of the air filter mounting device of the present invention. Cross-sectional views, FIGS. 6 to 9. FIG. 10 (al) and FIG. 10 (b) are a cross-sectional view and FIG.
FIG. 11(b) is a sectional view showing an example of a method for attaching an elastic gasket to an air filter frame of the air filter attaching device of the present invention, and FIG. 11(b) is a sectional view showing a state in which the elastic gasket is attached to an air filter frame. FIGS. 12, 13, 14, and 15 are front cross-sectional views of essential parts of an embodiment of the air filter mounting device of the present invention using an elastic gasket in which a compressive strength retaining base material is embedded. 1, 102...U-shaped cross-section frame body, 2.200.20
1.202-... Air filter frame, 3... Elastic gasket, 4.41°42, 43.44.45... Compressive strength retaining base material, 5.500°502... Hanging fittings,
6... Air filter, 7... Pressurized air, 8...
Auxiliary frame, 9... Tightening mechanism, 11... U-shaped frame end surface, 12... Fan, 13... Fan housing frame. 21... Air filter frame extension portion, 51... Screw means, 52... Thread groove, 81... Release agent or release paper, 91... Shielding plate, 92... Oak l- ,130
...The tip of the fan housing frame. 210... Tip of air filter frame extension part, 300.
301... Gasket l-, 302... Rubber packing, 3o3... Caulking material, 304... Liquid sealing material, 501... Fastening fitting. Figure 1 Figure 2 +013Ql Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 (a) Figure 10 (b) Figure 11 (a
) Figure 11(b) Figure 14 Figure 15

Claims (1)

[Scope of Claims] 1. (ll) A vertically extending hanging fitting. (2) A number of mutually connected frames each having a U-shaped cross section and having an opening facing downward, attached to the hanging fitting. (3) The clamp provided on the hanging fitting and located below the frame has a mechanism. (4) The clamp has a mechanism and a filter frame that is held between the mechanism and the frame. (5) The air filter mounting device is configured such that the filter frame abuts the end face of the frame opening via an elastic gasket, and the extending portion from the filter frame abuts the bottom face of the frame body. 2. The elastic gasket. The device according to claim 1, wherein a compressive strength retaining base material is embedded in the inside of the device.3. Support and fix with a hanging fitting extending vertically from a desired fixing part. (2) An air filter frame having an extension part and holding the air filter in an airtight manner, surrounded by the extension part and the filter frame. (3) through the elastic gasket, the filter frame is brought into airtight contact with the end face of the opening of the frame body so that the extension portion is in contact with the bottom face of the frame body; and (4) a method of installing an air filter mounting device in which the filter frame is held between the frame body and a tightening mechanism provided on the hanging fitting and located below the frame body. 4. When fixing to the filter frame. +11 Arrange a mold release auxiliary frame opposite to the extended part of the filter frame. (2) Place a liquid in the space constituted by the filter frame, the extended part, and the auxiliary frame. 4. The mounting method according to claim 3, wherein the gasket is injected, and (3) after the liquid gasket is cured, the auxiliary frame is released from the mold. 5. A compressive strength retaining base material is provided inside the elastic gasket. The mounting method according to claims 3 and 4, wherein the mounting method is buried.