JP3779300B2 - Air filter unit - Google Patents

Description

  The present invention relates to an air filter unit.

Conventionally, for example, as shown in FIG. 5, an air filter unit 2 is provided in which a plurality of rectangular filter cassettes 6 are arranged in a V shape in an outer frame 4 and can be inserted and removed from the front as indicated by an arrow 8. (For example, refer nonpatent literature 1).
“Indoor Air Cleaner Handbook” edited by Japan Air Cleaner Association, Ohm Co., Ltd., August 25, 2000, p. 220-221

  In such an air filter unit 2, the direction in which the adjacent filter cassette 6 is inserted and removed intersects. Therefore, in order to facilitate the insertion and removal, the air filter unit 2 cannot be completely sealed. It is necessary to be able to play gaps and play.

However, in this manner it is Tsu Na to allow clearance or play, and contribute to the filter performance (such as particle collection efficiency) is decreased. Further, since the direction in which the adjacent filter cassette 6 is inserted and removed intersects and is inclined with respect to the outer frame 4, the assembling work becomes troublesome.

  In view of such circumstances, the present invention is intended to provide an air filter unit that can improve filter performance and can be easily assembled.

  In order to solve the above technical problem, the present invention provides an air filter unit having the following configuration.

The air filter unit is of a type in which a plurality of rectangular filter cassettes including a filter medium are combined in a V shape and stored in a filter frame. In the filter frame , a bottomed groove is formed in a pair of frame members arranged to face each other in a direction perpendicular to the direction in which the filter cassettes are adjacent to each other . The end of the filter cassette in a direction perpendicular to the direction in which the filter cassettes housed in the filter frame are adjacent to each other is pressed against the bottom surface of the bottomed groove. At least one of the pair of frame members of the filter frame includes an inner frame member and an outer frame member coupled to the inner frame member. The inner frame member is formed with a through hole penetrating in a direction perpendicular to the direction in which the filter cassettes are adjacent to each other, and the filter cassette is inserted from the through hole. The bottomed groove is formed in the outer frame member .

According to the above configuration, the filter cassette can be inserted into and removed from the through hole in the filter frame in a direction perpendicular to the direction in which the filter cassettes are adjacent to each other, that is, in a direction substantially perpendicular to the air flow with respect to the air filter unit. . Since this insertion / removal direction is a direction that does not intersect the adjacent filter cassette, the filter cassette can be easily inserted / removed even if there is no gap or play between the adjacent filters. Further, the direction in which the filter cassette is inserted and removed is the direction in which the filter frame extends and does not cross obliquely with respect to the filter frame, so that the assembling work is facilitated.
In the above configuration, the outer frame member can prevent the filter cassette from coming out of the through hole of the inner frame member. Compared with the case where each filter cassette is not individually removed from the filter frame, the configuration is simple and the assembling work is facilitated. In addition, since the end of the filter cassette comes into pressure contact with the bottom surface of the bottomed groove to improve the sealing performance, the particle collection rate of the filter unit can be improved.

Preferably, the pair of frame members of the filter frame includes the inner frame member and the outer frame member, respectively. The through-holes and the bottomed grooves are alternately formed on the inner frame members of the pair of frame members for each of the air filter units combined in a V shape and housed in the filter frame.

  According to the said structure, about a pair of frame member, the intensity | strength fall by a through-hole can be made equal, or the kind of components can be reduced by making it the same shape, and a structure can be simplified.

Preferably, a connection member is provided. The connecting member, between the pair of frame members, extends in a direction perpendicular to the direction in which the filter cassette together housed in the filter frame are adjacent, exchange on both sides of a direction perpendicular to the filter frame each other disposed, the filter cassette together housed in the upper Symbol filter frame is pressed against the ends of adjacent direction of the filter cassette.

  As described above, with a simple configuration in which the end of the filter cassette is pressed into contact with the connecting member, the adjacent filter cassettes can be sealed, and the particle collection rate of the filter unit can be improved.

  The air filter unit of the present invention can improve the filter performance and can be easily assembled.

  Hereinafter, examples of the present invention will be described with reference to FIGS.

  As shown in FIGS. 1 and 2, the air filter unit 10 includes filter cassettes 31 to 38 in a filter frame in which a pair of upper and lower inner frame members 16 and a pair of left and right side plate members 22 are coupled in a rectangular shape in the drawing. Is to be stored. The connecting members 12 and 14 are coupled between the pair of upper and lower inner frame members 16, and the outer frame member 18 is disposed outside the inner frame member 16.

  The inner frame member 16 is a plate-like member, and as shown in FIG. 2, bottomed grooves 16 a that are not penetrating in the thickness direction and penetrating through holes 16 b are alternately formed in a zigzag manner. The pair of inner frame members 16 have the same size and shape, and are arranged so that the bottomed groove 16 a of one inner frame member 16 faces the through hole 16 b of the other inner frame member 16. As shown in FIG. 3, a counterbore 16t is formed around the through hole 16b, and the filter cassettes 31 to 38 can be easily inserted into the through hole 16b from the counterbore 16t side. Further, a notch 16 s is formed at the end of the inner frame member 16.

  The outer frame member 18 is a plate-like member, and as shown in FIG. 2, a plurality of bottomed grooves 18a are formed obliquely in parallel on one side. The pair of outer frame members 18 have the same size and shape, are fixed so as to be in contact with the outer surfaces of the pair of inner frame members 16, and each bottomed groove 18 a faces each through hole 16 b of the inner frame member 16. It is like that. As shown in FIG. 3, a protrusion 18 t is formed at the end of the outer frame member 18, and is fitted into the notch 16 s of the inner frame member 16 so that the outer frame member 18 is coupled to the inner frame member 16. It has become.

  The side plate member 22 is a plate-like member, and as shown in FIGS. 2 and 3, the upper and lower end portions are respectively coupled to the left and right end portions of the inner frame member 16.

  As shown in FIGS. 1B and 2, the connecting member 12 is a columnar member having a pentagonal cross section, is disposed between the inner frame members 16, and has a bottomed groove 16 a of the inner frame member 16 formed in a zigzag shape. And upper and lower ends are coupled to the vicinity of each apex of the zigzag of the through hole 16b.

  The connecting member 14 is a columnar member having a quadrangular cross-section obtained by halving the connecting member 12 described above. The upper and lower ends are coupled to the vicinity of the zigzag start and end portions of 16 a and the through hole 16 b, and the side surfaces are coupled to the side plate 22.

  The connecting members 12, 14, the inner frame member 16, the outer frame member 18, and the side plate member 22 can be made of, for example, resin or metal. Can be joined by a stop.

  As shown in FIG. 4, the filter cassettes 31 to 38 are panel-like members in which the filter medium 30 is sandwiched between a pair of panel frames 39. As shown in FIG. 1, the filter cassettes 31 to 38 are arranged in the filter frame of the air filter unit 10. Arranged in a V shape and fixed.

  Next, an example of a procedure for assembling the air filter unit 10 will be described.

  First, the pair of inner frame members 16 and the pair of side plate members 22 are coupled to each other in a rectangular shape, the coupling members 12 and 14 are coupled between the pair of inner frame members 16, and the coupling member 14 is further coupled to the side plate 22. To do.

  Next, the filter cassettes 31 to 38 are inserted into the through holes 16b from both sides of the pair of inner frame members 16, and the end portions of the filter cassettes 31 to 38 are formed in the bottomed grooves of the inner frame member 16 as shown in FIG. Plug into 16a. Then, the outer frame member 18 is overlapped on the inner frame member 16, the protrusion 18 t of the outer frame member 18 is press-fitted into the notch 16 s of the inner frame member 16, and the outer frame member 18 is coupled to the inner frame member 16.

  When assembled as described above, one end of the filter cassettes 31 to 38 is in pressure contact with the bottom surface of the bottomed groove 16a of the inner frame member 16, and the other end (the end on the through hole 16b side) is It is pressed against the bottom surface of the bottomed groove 18a of the outer frame member 18 and is held between the opposed inner frame member 16 and outer frame member 18 without any gaps or play. Further, as shown in FIG. 1B, adjacent end portions of the filter cassettes 31 to 38 are pressed against the connecting members 12 and 14 so that there is no gap or play. Thereby, since the four sides of the filter cassettes 31 to 38 are sealed, the filter performance can be improved.

  Further, the direction in which the filter cassettes 31 to 38 are inserted and removed is the direction in which the filter frame extends, and the air filter unit is easy to assemble because it does not intersect the adjacent air filter unit unlike the conventional product.

  In addition, this invention is not limited to the said Example, It can implement in the various aspect which added the change.

  The air filter unit of the present invention can be widely used in general for air filters such as air conditioning equipment and engine intake systems.

It is (a) front view and (b) sectional drawing of an air filter unit. (Example) FIG. 2 is an assembled perspective view of the air filter unit of FIG. 1. (Example) It is a principal part expanded sectional view of the air filter unit of FIG. (Example) It is an assembly perspective view of a filter cassette. (Example) It is a partial section perspective view of an air filter unit. (Conventional example)

Explanation of symbols

10 air filter unit 12, 14 connecting member 16 inner frame member (filter frame, pair of frame members)
16a Bottomed groove 16b Through hole 18 Outer frame member (filter frame, pair of frame members)
18a Bottomed groove 22 Side frame member (filter frame)
30 Filter media 31-38 Filter cassette

Claims (3)

In an air filter unit that combines a plurality of rectangular filter cassettes including a filter medium into a V-shape and stores them in a filter frame,
The filter frame is formed with a bottomed groove in a pair of frame members arranged to face each other in a direction perpendicular to the direction in which the filter cassettes are adjacent to each other ,
An end of the filter cassette in a direction perpendicular to the direction in which the filter cassettes housed in the filter frame are adjacent to each other is pressed against the bottom surface of the bottomed groove,
At least one of the pair of frame members of the filter frame includes an inner frame member and an outer frame member coupled to the inner frame member,
The inner frame member is formed with a through hole penetrating in a direction perpendicular to the direction in which the filter cassettes are adjacent to each other, and the filter cassette is inserted from the through hole ,
The air filter unit, wherein the outer frame member is formed with the bottomed groove. Each of the pair of frame members of the filter frame includes the inner frame member and the outer frame member,
In the inner frame member of the pair of frame members, the through holes and the bottomed grooves are alternately formed for each of the air filter units housed in the filter frame in combination with a V shape. The air filter unit according to claim 1, wherein the air filter unit is characterized. Between the pair of frame members, extends in a direction perpendicular to the direction in which the filter cassette together housed in the filter frame are adjacent, exchange is mutually disposed on both sides of a direction perpendicular to the filter frame, the upper 3. The air filter unit according to claim 1, further comprising a connecting member that presses against an end of the filter cassette in a direction in which the filter cassettes housed in the filter frame are adjacent to each other.

Images