JPH08224422A - Air filter - Google Patents

Abstract

PURPOSE: To provide an air filter short in working hours for the attachment and exchange and also inexpensive in production cost for the air filter and air filter fixing frame. CONSTITUTION: The air filter is constructed of a plate-like air filter media and a filter frame 4 for inserting the filter media. Plural holes formed in the periphery of the filter media are engaged with the pins 5 provided at positions corresponding to hole positions of the filter media on the filter frame 4, and the filter media is fixed to the filter frame 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air filter installed at an outside air intake of an air conditioner, an outside air intake of a building ventilation device, or the like.

[0002]

2. Description of the Related Art Conventionally, as an air filter provided at an outside air intake of an air conditioner or a building ventilation device, a filter unit is a frame made of an iron plate, an aluminum plate, etc., in which a flat filter medium is incorporated. Then, this unit was used by mounting it on the filter mounting frame in the required number according to the required treatment air volume. For example, as shown in FIG.
The filter unit was assembled by fixing the air filter medium 11 with the filter retaining wire 12 and the frame 13. or,
In order to be able to commonly use the various air filters used, a relatively small outer dimension of the unit, for example, 610 mm square is generally used.

[0003]

However, in a large air filter, the number of units to be mounted increases,
There are drawbacks such that it takes time to install and replace the air filter, and if the number of units is large, the manufacturing cost of the filter unit and the filter mounting frame for mounting them increases. Further, as the number of units increases, the area occupied by the frames of the units increases, and the effective filter medium area decreases, so that there is a drawback that the intake filter device becomes large in size to maintain the desired effect. Therefore, an object of the present invention is to eliminate these drawbacks, and also for an air filter provided in a large-sized outside air intake, to shorten the working time for mounting and replacing the air filter as much as possible, and to To reduce the cost of manufacturing the filter mounting frame.

[0004]

In order to achieve the above-mentioned object, an air filter of the present invention is an air filter comprising a flat plate-like air filter medium and a filter frame for loading the medium. A plurality of holes formed in the periphery of the filter medium and a pin provided at a position corresponding to the hole position of the filter medium of the filter frame are fitted to each other, and the filter medium is fixed to the filter frame. Characterize. In the air filter medium, it is preferable that the peripheral edge of the air filter medium is reinforced with a reinforcing material such as cloth or non-woven fabric.

[0005]

According to the present invention, an appropriate number of holes are formed in the peripheral edge of the flat air filter medium, and the filter frame is provided with pins at positions corresponding to the hole positions of the filter medium.
When assembling the filter frame and the filter medium, the holes of the filter medium are fitted into the pins of the filter frame, so that the position of the filter medium in the filter frame does not shift. With such a structure, the outer dimensions of the filter frame can be freely determined according to the size of the outside air intake. In terms of practical use, from the viewpoint of manufacturing the filter medium and handling the filter, a width of 1000 mm and a length of 1000-
A filter medium having a size of about 2000 mm is preferable. Further, the number of holes (or the number of pins of the frame) provided on the periphery of the filter medium may be appropriately determined according to the size of the filter medium. To reinforce the periphery, for example, a tape-shaped cloth or a non-woven fabric is used as a edging. You may. By using a cloth or a non-woven fabric, it is easy to handle because it is a flexible material when it is folded or rolled into a roll for storage and handling. Further, since it has air permeability, it also exerts an effect as a filter medium.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same members are designated by the same reference numerals. FIG. 1 is a perspective view of a filter medium used in the air filter of the present invention. As shown in FIG. 1, a plurality of eyelet holes 2 are formed in the outer peripheral edge of the air filter medium 1. The air filter of the present invention is provided at an outside air intake of an air conditioner or a building ventilation device to collect dust in the outside air, and a non-woven fabric having a thickness of about 10 to 25 mm is usually used as a filter medium. The average dust collection efficiency is 60-
It is about 80%. In FIG. 2, the periphery of the air filter medium 1 is trimmed with a tape 3 made of organic or inorganic fiber, and the eyelet holes 2
It is a perspective view which shows the example of another filter media which reinforced the filter media periphery including. FIG. 3 is a perspective view of an air filter assembly using the air filter medium 1 according to the present invention,
As shown in the drawing, the eyelet holes of the air filter medium 1 are fitted into the plurality of pins 5 provided on the frame 4 to fix the position of the medium. As shown in FIG. 4, which is a partially enlarged view of FIG. 3, a gold net 6 may be attached to the frame so as to be integrated with the frame, and the bending of the air filter medium due to the wind pressure can be suppressed.

[0007]

As described above, according to the present invention,
Since the filter filter medium is fixed by fitting the holes formed in the periphery of the flat plate-like filter medium with the pins provided in the filter frame, the position of the filter medium is prevented from being displaced in the filter frame. Also, the size of the outside air intake can be decided to the optimum size without being restricted by the size of the standard type filter.
Greater flexibility in design. Compared to using a standard size filter in combination, the number of filters used is reduced, which reduces the number of filter frames and simplifies the structure of the filter mounting frame for mounting the filter frames. There is an advantage that the production cost of them is reduced. If standard size filters are used in combination, odd-sized filters are likely to be created in the width direction and depth direction (or height direction) at one inlet, increasing the number of types of filters and increasing the cost. The drawback of becoming is also improved. Further, when the filter is replaced, only the filter material needs to be replaced, so the replacement cost can be reduced. Further, since the filter medium is light in weight, it is easy to carry and store.

[Brief description of drawings]

FIG. 1 is a perspective view of a filter medium used in an air filter of the present invention.

FIG. 2 is a perspective view of a filter medium having an outer peripheral edge used for the air filter of the present invention.

3 is a perspective view of a filter assembly assembled using the filter medium of FIG.

4 is a partially enlarged sectional view of FIG.

FIG. 5 is a perspective view of a conventional filter assembly.

[Explanation of symbols]

 1 Air Filter Filter Material 2 Eyelet Hole 3 Outer Perimeter Tape 4 Frame 5 Pin 6 Gold Net 11 Air Filter Filter Material 12 Filter Material Holding Wire 13 Frame

Claims (2)

[Claims] 1. An air filter comprising a flat air filter medium and a filter frame for loading the filter medium, wherein a plurality of holes are formed in the periphery of the filter medium, and the filter frame has a plurality of holes. An air filter, wherein a pin provided at a position corresponding to a hole position of the filter medium is fitted to fix the filter medium to the filter frame. 2. The air filter according to claim 1, wherein a peripheral edge of the air filter medium is edge-reinforced with a reinforcing material.