JPH0952013A - Filter attaching structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter attaching structure having a wide adaptable range inclusive of a filter built-in blowoff device. SOLUTION: This filter attaching structure is constituted so that a filter frame 12 airtightly surrounding the filter material 11 of an air filter 10 is airtightly fixed to the filter attaching frame 2 provided in a chamber 1. The filter attaching frame 2 equipped with an engaging groove 2a is provided along the inner peripheral surface of the chamber 1 and the support member 3 supporting the filter frame 12 is engaged with the engaging groove 2a of the filter attaching frame 2 and the gap between the filter frame 12 and the filter attaching frame 2 is sealed by a seal material 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter mounting structure for fixing an air filter to a filter mounting frame of a chamber, and more particularly to a filter mounting structure suitable for application in a filter built-in blowing device.

[0002]

2. Description of the Related Art Conventionally, for example, a method shown in FIG. 5 is known for attaching an air filter to a chamber. That is, the filter frame c that hermetically surrounds the outer periphery of the filter material b of the air filter a is clamped and fixed to the filter mounting frame f provided in the chamber e via the gasket d made of chloroprene rubber. In this tightening and fixing, for example, the upper end surface of the filter frame c is brought into contact with the filter mounting frame f, the filter mounting bracket g is brought into contact with the lower surface of the filter frame c, and the tightening member h composed of a stat bolt is tightened. The filter mounting bracket g is fastened to the air filter a. However, in the statbolt system, the chamber e and the filter a are
Since a mounting space is required between them, there is a problem that a dead space where air does not blow out becomes large.

Therefore, various proposals have been made in which the structure of the filter frame and the filter mounting frame is devised so that the air filter is mounted without using the stat bolt. For example, in Japanese Utility Model Publication No. 6-2728, concave grooves are provided on the inner surface of the lattice of a lattice-shaped filter mounting frame, and locking pieces that can be engaged in the concave grooves are provided on both side surfaces of the filter frame of an air filter. What has been proposed is proposed.

[0004]

However, in the case of the proposed filter mounting structure, the filter frame of the air filter and the filter mounting frame both need to have a special dedicated structure, so that the application range is inconvenient. . Especially,
In the case of a blow-out device with a built-in filter, a thin steel plate processed by sheet metal processing is used as the casing that constitutes the chamber, and therefore the above-mentioned mounting structure cannot be applied. Therefore, it is an object of the present invention to solve the above-mentioned disadvantages of the prior art and to provide a filter mounting structure having a wide range of application, including a blowing device with a built-in filter.

[0005]

SUMMARY OF THE INVENTION The present invention meets such a demand, and a filter frame for hermetically surrounding the outer periphery of a filter medium of an air filter is hermetically fixed to a filter mounting frame provided in a chamber. It has a mounting structure,
A filter mounting frame having a locking groove is provided along the inner peripheral surface of the chamber, and a supporting member for supporting the filter frame is locked in the locking groove of the filter mounting frame, and the filter frame and the filter mounting frame are The feature is that the space is sealed with a sealing material. In addition, it is preferable that the support member is provided with a support portion that holds the lower end portion of the filter frame and an engagement portion that engages with the engagement groove of the filter mounting frame.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the filter mounting structure of the present invention will be described with reference to FIGS. 1 in the figure
Indicates a casing (chamber), and this casing 1
Along the inner circumferential surface of the air filter 10, a filter frame 12 that airtightly surrounds the filter medium 11 is formed in a frame shape slightly larger than the outer circumference of the filter frame 12, and includes a locking groove 2a having a U-shaped cross section. Also, the filter mounting frame 2 is provided by welding.

Reference numeral 3 in the drawing denotes a support member, which is a horizontal plate-shaped support portion 3a for supporting the lower end surface of the filter frame 12, and the support member 3 for engaging with the engagement groove 2a. And a hook-shaped engaging portion 3b.

Thus, according to this embodiment, the filter frame 1 of the air filter 10 is provided on the support portion 3a of the support member 3.
The air filter 10 is fixed to the filter mounting frame 2 by supporting the lower end surface of the filter 2 and engaging the locking portion 3b of the support member 3 with the locking groove 2a of the filter mounting frame 2. Further, the gap s formed between the filter frame 12 and the filter mounting frame 2 of the air filter 10 is sealed by the sealing material 20. At the position where the support member 3 is present, by applying the sealing material 20 between the support member 3 and the filter frame 12 and the filter mounting frame 2, the filter frame 12 of the air filter 10 is removed.
The gap s formed between the filter mounting frame 2 and the filter mounting frame 2 is sealed.

In order to construct the mounting structure, first,
The air filter 10 is horizontally lifted and inserted into the opening 4 formed by the filter mounting frame 2 from the downstream side, and then the support member 3 is attached to the locking portion 3b at four positions on two sides of the filter mounting frame 2. Lock it. Next, the lower end surface of the filter frame 12 of the air filter 10 is placed and supported on the support portion 3a of each of the support members 3, and the space s formed between the filter frame 12 and the filter mounting frame 2 is sealed. After sealing with the material 20, the supporting member 3 and the filter frame 12 and the filter mounting frame 2 are sealed with the sealing material 20 to form the mounting structure.

Although the locking groove 2a of the filter mounting frame 2 has a U-shaped cross section in the above-described embodiment, the locking groove 2a has a J-shaped cross section, and the locking portion 3b of the support member 3 is formed. The shape is not particularly limited as long as it engages with
Further, the filter mounting frame 2 itself may form the locking groove 2a, or the filter mounting frame 2 and the casing 1 may form the locking groove 2a.

If the support member 3 is provided with a locking portion 3b that engages with the locking groove 2a and a supporting portion 3a on which the lower end surface of the filter frame 12 of the air filter 10 is placed, it is particularly preferable. Is not limited. Incidentally, as shown in FIG. 4, if the support portion 3a of the support member 3 is configured to hold the lower end portion of the filter frame 12, the filter 10 can be stably installed without being displaced.

[0012]

As described above, according to the present invention,
Since the air filter is not clamped and fixed by stat bolts to the filter mounting frame via the gasket, the installation space for the stat bolt and filter mounting bracket can be omitted, and the dead space for blowing clean air can be reduced. The non-wind area is reduced, and the turbulent flow caused by it is also reduced, so that cleaning by laminar flow can be achieved quickly. Also, the filter frame does not require special processing,
Since it does not require special processing for engagement, it can be used freely even if it is not suitable for processing such as a wooden frame, and even if it is a casing made of sheet metal processing of thin steel plate, filter mounting with locking groove Since the frame only needs to be fixed in advance by welding or the like, it can be applied to a casing made of sheet metal of thin steel plate.

[Brief description of drawings]

FIG. 1 is a bottom view of the filter mounting structure of the present invention.

FIG. 2 is a sectional view taken along line II of FIG. 1;

FIG. 3 is a sectional view taken along line II-II of FIG.

FIG. 4 is a sectional view of a main part of another embodiment of the filter mounting structure of the present invention.

FIG. 5 is a side sectional view of a conventional filter mounting structure.

[Explanation of symbols]

 1 Casing (Chamber) 2 Filter Mounting Frame 2a Locking Groove 3 Supporting Member 3a Supporting Part 3b Locking Part 4 Opening 10 Air Filter 11 Filtering Material 12 Filter Frame 20 Sealing Material

Claims (2)

[Claims] 1. A filter mounting structure in which a filter frame surrounding an outer periphery of a filter medium of an air filter is hermetically fixed to a filter mounting frame provided in a chamber, the filter mounting structure extending along an inner peripheral surface of the chamber. A filter mounting frame having a locking groove is provided, a supporting member for supporting the filter frame is locked in the locking groove of the filter mounting frame, and a sealing material is provided between the filter frame and the filter mounting frame. The filter mounting structure characterized in that 2. The support member includes a support portion that holds a lower end portion of the filter frame and an engagement portion that engages with an engagement groove of the filter mounting frame. Filter mounting structure.