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Air filter

An air filter and filter technology, which is applied in membrane filters, dispersed particle filtration, chemical instruments and methods, etc., can solve the problems of heavy weight of filter assemblies and high wind pressure of filter assemblies, etc.

Inactive Publication Date: 2008-07-30
NIPPON MUKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in a large air filter, since the filter assembly itself has a very large dead weight, and the wind pressure acting on the filter assembly is also very large, after a long period of use, especially the central part of the filter assembly will be damaged Due to its own weight, it sags greatly toward the downstream side. In order to prevent the deformation of the filter assembly for a long time, it is necessary to improve the protection measures of the filter material.

Method used

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Examples

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Embodiment 1

[0043] figure 1 Among them, 1 represents the air filter, which is a large air filter with a vertical and horizontal dimension of 1220mm×1220mm and a thickness of 75mm. It consists of a filter assembly 10 with a folded width of 65 mm, an aluminum filter frame 20 with a thickness of 15 mm, and two pieces of aluminum steel wire mesh 30 with a thickness of 1 mm and an opening ratio of about 70%.

[0044] The filter material 11 made of glass fibers constituting the filter pack 10 is folded in a zigzag shape, and the creases are fixed with a strip-shaped hot-melt resin to maintain the folding interval.

[0045] The ends 11a, 11b parallel to the pleats of the filter material 11 are fixed to the inner side walls 21, 22 of the filter frame 20 with an adhesive 12 . The bent ends 11c, 11d perpendicular to the pleats of the filter material 11 are hermetically fixed to the inner side walls 23, 24 of the filter frame 20 with a sealant 13 .

[0046] Two steel meshes 30, 30 are bent vertica...

Embodiment 2

[0050] Adopt the air filter of the same material and size as the air filter of Example 1, the height of the rib is 11 mm, the width of the reinforcing plate matches the height of the rib, which is about 8 mm, and the rest of the conditions are the same as in Example 1.

[0051] Past example:

[0052] Adopt the same material, the air filter of size with the air filter of embodiment 1, as Figure 5 As shown, no reinforcing plate is provided on the rib 31, and other conditions are the same as in Embodiment 1.

[0053] For the air filters of the above-mentioned Examples 1, 2 and the prior examples, each air filter was placed horizontally, and the deformation of the filter assembly after 1 month, 3 months, 6 months, and 1 year was measured, and the filter material was confirmed. damage condition. The deformation of the filter pack is based on the downstream end of the filter frame of the horizontally placed air filter, and the amount of sagging deformation of the filter pack from...

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Abstract

An air filter formed by disposing two or more sheets of net-like objects stored in a filter frame at least on the downstream side of a filter pack, wherein at least one end parts of the net-like objects are bent to form two or more ribs, reinforced plates are installed along the ribs, and the air filter is fixed to the filter frame with the rear faces of the ribs abutted against each other. Since the strength of the net-like objects is remarkably increased and the filtration area of the net-like objects is increased by an increase in size of the air filter, the filter pack increased in weight can be effectively prevented from being deformed to the downstream side and a filter medium from being damaged.

Description

technical field [0001] The present invention relates to an air filter for creating an ultra-clean space such as a clean room for liquid crystal and semiconductor production. Background technique [0002] In the past, the structure of the clean room for liquid crystal and semiconductor production was that the air filter was installed on the entire ceiling, and the air was circulated by a large fan. Conventionally, as such an air filter, an air filter having a size of 610 mm in length and 610 mm in width has been used. As the filter material protection measure of the air filter, as shown in the Japanese Publication No. 57-73363, kraft paper is pasted on both sides of the filter paper with wavy pleats in the length direction, and a metal mesh made of metal mesh is set on the bottom surface. As for the reinforcement member, in order to further strengthen the reinforcement member, bends are provided on both sides of the metal mesh and embedded in the member, or in addition to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/52B01D46/00B01D46/10
CPCB01D46/10B01D46/521B01D2265/06B01D46/0005B01D46/52
Inventor 山口健渡边正昭
Owner NIPPON MUKI CO LTD