JPH03274331A - Filter device for air conditioner - Google Patents

Abstract

PURPOSE:To facilitate exchange of the filter medium of a filter by a method wherein superposed parts are formed at two end pieces of the filter medium located between first and second filter frame bodies, and hook parts formed at four corners are engaged with respective opening parts having a gap therebetween. CONSTITUTION:Two ends 8, being superposed parts 9, of a filter medium 7 are inserted and locked to respective opening part H, having a gap (a), of bent parts 3 and 3a of filter frame bodies 1 and 1a. Further, the end surfaces of the filter medium 7 are pressed against cushioning materials 4 and 4a mounted on the inner surfaces of lateral frames 2 and 2a of the filter frame bodies 1 and 1a. A filter comprises a pair of filter frame bodies of the one being the first frame body 1 and the other being the second filter frame 1a and the filter medium 7.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Application The present invention relates to a filter device installed in an air conditioner.

2. Description of the Related Art Conventionally, filters for air conditioners have been constructed as shown in FIGS. 2 and 3. That is, the main body 11 of the air conditioner (hereinafter referred to as an air conditioner) includes a heat exchanger 14, an air blower e115, a pre-filter 17, and a filter 21. The pre-filter 17 is inserted from the front of the main body 11 into a groove of a U-shaped filter rail 16 fixed by welding or the like to opposing positions on the lower inner surfaces of the side plate 12 and the other side plate 13 of the main body 11 of the air conditioner. It is inserted and installed. On the other hand, the filter 18 is attached to the upper part of the pre-filter 17 by being inserted from the front of the main body 11 onto the filter rail 16 for attaching the pre-filter 17. Then, the indoor air is supplied by the operation of the blower 15 as shown by arrow A.
The air is sucked in through the air suction port 19, removed by the pre-filter 17 and the filter 18, passed through the blower 15, and exchanged heat with the heat exchanger 14. It is blown back into the room as blown air. In FIG. 3, the filter 18 is formed into an angular shape by caulking both ends of two pairs of U-shaped filter frames 22 and 23 with rivets 22a, etc., and has a cushioning material 24 on the inner surface of the filter frame to prevent wind leakage. The structure was such that a corrugated filter medium 25 was housed by pasting it on all sides.

Problems to be Solved by the Invention In such conventional configurations, the filter medium 25 is often disposable, and the entire filter 18 must be discarded during regular filter maintenance, which is performed two or three times a year. In the case of air conditioners that are installed in large numbers in buildings, offices, etc. to be replaced, the initial cost is large, and even if the filter media 25 is a washable type, the filter frames 22 and 23 have rivets 22a, etc. Since the filter medium 25 cannot be easily removed, the buffer material 24 attached to the filter frame 22 and 23 absorbs water when the filter 18 is washed with water, which increases the drying time. This poses a problem in that it takes a long time to perform maintenance.

The present invention solves these problems and aims to provide a filter device in which only the filter medium can be easily replaced.

Means for Solving the Problems In order to solve this problem, the present invention comprises a first filter frame body including a horizontal frame and a bent portion, a cushioning material is pasted inside the horizontal frame, and the The bent part is formed with an open part having an interval by a cut and raised piece, and the first filter frame and the second filter frame are provided, and the first filter frame and the second filter frame are provided. A filter medium to be worn between the filter medium and the body is provided, overlapped portions are formed on both end pieces of the filter medium, hanging portions are provided at the four corners, and the hanging portions are fitted into the open portion having the above-mentioned spacing. It is structured as follows.

Function: With this configuration, both ends of the overlapped portion of the filter media are inserted and locked into the open portion having the interval between the bent portions of the filter frame, and the end face of the filter media is inserted into and locked into the open portion having the interval between the folded portions of the filter frame, and the end surface of the filter media is inserted into and locked into the open portion having the interval between the folded portions of the filter frame. A filter is formed by a pair of filter frames, a first filter frame and a second filter frame, and a filter medium.

Embodiment An embodiment of the present invention will be described below with reference to FIG. −
A first filter frame 1, which is a good example, has a horizontal frame 2 and a bent part 3 bent in an L shape at both ends symmetrically, and inside the horizontal frame 2 is a cushioning material 4 made of foamed resin. is pasted. Further, a cut and raised piece 5 is formed on the inner surface of each of the bent parts 3, and a distance a is formed between the bent part 3 and the cut and raised piece 5.

Two sides of the cut and raised piece 5 form an open part H, and the remaining two sides form a bottom part 6 that is continuous with the bent part 3. 6. On the other hand, the filter medium 7 is formed in a wavy shape in order to increase the dust filtration area, and both end pieces 8 of the filter medium 7 are connected to the adjacent end pieces with an overlapping part 9 using an adhesive (not shown) or the like. It is formed to have a thicker thickness b, and has sufficient strength to be inserted into the opening H. That is, the overlapping 89 of both end pieces 8
The hanging portion 10 is fitted and inserted into the opening portion 3a. Further, the edge portion 7a of the filter medium 7 is brought into contact with the cushioning materials 4, 4a attached to the inside of the horizontal frame 2. On the other hand, the second filter frame 1a on the other side is also configured symmetrically with the first filter frame 1, and has a cushioning material 4a on the inner surface of the horizontal frame 2a, a bent portion 3a, and a bent portion 3a. An open portion H and a bottom portion 6a are formed in the portion 3a.

In the above configuration, when assembling the filter frame 1, an overlapping portion 9 is formed on both end pieces 8 of the filter medium 7 at a distance a between the open portion H formed in the folded EIIJ portion 3 of the first filter frame 1. The hanging portion 1° is inserted and fitted, and the edge portion 7a is brought into contact with the I impact 4. On the other hand, the hanging portions 10 configured as overlapping portions 9 are inserted and fitted to both end pieces 8 of the filter medium 7 at the interval a of the open portion H formed in the bent portion 3a of the second filter frame 1a. By bringing the edge portion 7a into contact with the cushioning material 4a, one unit of the filter frame 1 is completed.

Next, when performing maintenance to periodically replace the filter medium 7, disassemble it in the reverse order. That is, the bent portions 3, 3
The first filter frame 1, the second filter frame 1a, and the filter media are removed by forcibly removing the four corners of the hanging portion 10 of the filter media 7 that had been fitted into the opening H of a. 7 is disassembled, replaced with a new filter medium, and completed with the filter frame 1+la in the above-mentioned assembly order. As a result, both end pieces 8 of the filter medium 7 are partially covered with the bent parts 3 and 3a,
The remaining central portion W is exposed and no material is required for this portion alone, resulting in lower costs.

Effects of the Invention As is clear from the description of the embodiments described above, the present invention provides a first filter frame body and a second filter frame body each consisting of a horizontal frame and a bent portion, and a cushioning material inside the horizontal frame. At the same time as pasting, the hanging portion of the filter medium is inserted into the bent portion, and opening portions to be fitted are provided symmetrically, while overlapping portions are provided on both end pieces of the filter medium to form the opening portion of the filter medium. Since the hanging part is inserted and fitted, the filter frame and the filter medium can be separated for maintenance of the filter medium, and when the filter medium becomes dirty and unusable, Only the filter medium needs to be replaced, making it very economical and the replacement work very easy. Also, when cleaning the filter media or washing with water, only the filter media can be cleaned or washed with water, and the cushioning material attached to the inside of the horizontal frame is irrelevant. There is no need to wash the cushioning material as required in the past, and the drying time can be shortened, and the adhesion of the cushioning material will not be weakened. Furthermore, by configuring both end pieces of the filter medium as overlapping parts, they form a part of the filter frame, and the number of constituent members of the filter frame can be reduced, as well as being inexpensive and easy to use. It has the effect of being able to create

FIG. 2 is a perspective view of the configuration of a filter device, FIG. 2 is a perspective view of the configuration of an air conditioner for explaining a conventional example, and FIG. 3 is a perspective cutaway sectional view of the filter of the air conditioner according to the conventional example.

1.1a...filter frame, 2,2a...
・・Horizontal frame, 3, 3a・・・・Bending part, 4, 4a・・
...Cushioning material, 5.5a...Cut and raised piece, 7.
...Filter media, 8...Both end pieces, 9.
...overlapping part, 1o...hanging part, a.
...Space, H...Open part.

Claims (1)

[Claims] The first filter frame body is composed of a horizontal frame and a bent part, a cushioning material is pasted in the horizontal frame, and an open part having a gap is formed in the bent part by a cut and raised piece, The first filter frame and a second filter frame are provided, a filter medium is provided between the first filter frame and the second filter frame, and both end pieces of the filter medium are provided. A filter device for an air conditioner, the filter device having a structure in which overlapping portions are formed, hanging portions are provided at the four corners, and the hanging portions are fitted into the open portion having the above-mentioned interval.