JPH0331380Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a filter device whose sealing function does not deteriorate even if the roof is displaced due to earthquakes, snow accumulation, etc.

[Conventional technology]

Conventionally, a filter unit 35 in which a number of vertical laminar flow type filters 34 are mounted and fixed on a filter holding frame 33 suspended from a ceiling surface 31 via hanging bolts 32 has been provided as shown in FIG. When a load is applied to the ceiling surface 31 due to vibrations caused by an earthquake or snow accumulation, displacement occurs particularly in the part A in the figure. As shown, the filter holding frame 3 on which the filter 34 facing the wall surface 36 is placed and fixed
3, the synthetic resin sheet 37 is bent downward and fixed via fixing fittings 38, 39, and below the fixing fitting 38 on the wall surface 36 side and the fixing fitting 39 of the filter holding frame 33. Sealing materials 40 and 41 were filled in the upper portions of the tubes, respectively. Further, when the length of the synthetic resin sheet 37 in the longitudinal direction is insufficient, the missing length is added by melt-bonding at the construction site.

[Problem that the invention attempts to solve]

However, in the conventional method described above, the synthetic resin sheet 37 is fixed via the fixing fittings 38 and 39 at the construction site, so when attaching the fixing fittings 38 and 39 to the wall surface 36 and the filter holding frame 33, screw holes must be inserted. There is a problem that it is time-consuming because there is a lot of work such as opening and screwing.
In addition, since static pressure is applied to the upstream side of the air flow, there is a problem that leakage will occur immediately if there is a defect in melt adhesion when adding to the synthetic resin sheet 37. Since the area shown is a dead space, vortices are formed in the airflow in that area, resulting in poor wind speed distribution and an extremely unsightly appearance when viewed from the downstream side of the airflow.

The present invention aims to solve the above problems.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention has a hollow part between the wall surface and the filter holding frame of the filter unit, and is formed by fixing elastic plates to the upper and lower boards respectively through a mounting plate. It is constructed by connecting and fixing a cylindrical connecting body.

[Effect]

According to the present invention having the above configuration, the wall surface and the filter holding frame of the filter unit are connected by a cylindrical connection body having expandable and retractable plates on the upper and lower sides, and the filter unit can be displaced from the ceiling surface due to earthquakes, snow accumulation, etc. Even if this occurs, the expansion and contraction plate absorbs the displacement.

〔Example〕

An example of the implementation of the present invention will be described in detail with reference to FIGS. 1 to 3. A vertical laminar flow type filter 4 is mounted on a filter holding frame 3 suspended from a ceiling surface 1 via hanging bolts 2. In the filter unit 5, a mounting plate is formed by mounting and fixing a large number of them, and has locking pieces 7 projecting upwardly and downwardly in the longitudinal direction from the end side surface 3a of the filter holding frame 3 and the wall surface 6 facing this. Fix 8 and 9.

A substrate 10 made of two synthetic resin materials,
Expandable and retractable plates 12 and 13, such as bellows-shaped plates, are integrally bonded and fixed to the upper and lower inner surfaces of the substrates 10 and 11, respectively, with a hollow portion 14 therebetween.
A retractable cylindrical connecting body 16 is formed by providing locking protrusions 15 projecting upward and downward in the longitudinal direction on the outer surface of the mounting plate 1 so as to be able to lock with each of the locking pieces 7 of the mounting plates 8 and 9. There is.

The mounting plates 8 and 9 on which the locking pieces 7 are protruded are not particularly limited, but it is recommended that they be manufactured by aluminum extrusion molding in terms of workability and manufacturing cost, and cylindrical connectors. 16 is also recommended to be integrally molded from a synthetic resin material such as vinyl chloride from the same viewpoint as above.

FIG. 3 is an enlarged view showing a state in which the locking protrusion 15 of the cylindrical connector 16 is locked to the locking pieces 7 of the mounting plates 8 and 9 fixed to the wall surface 6 and the filter unit 5. It is a sectional view, and sealing material 17 is applied above and below the locking protrusion 15 to prevent leakage.

The cylindrical connecting body 16, which is connected and fixed to each of the mounting plates 8 and 9 via the locking protrusions 15 as described above, has a hollow part 14 inside, and expandable plates 1 above and below it.
2 and 13, even if the ceiling surface 1 is displaced due to vibrations caused by an earthquake or snow accumulation, the displacement is absorbed because the extensible plates 12 and 13 are expandable and contractable.

[Effect of idea]

Since the present invention is as described above, even if the ceiling surface is displaced due to vibrations caused by earthquakes or snow accumulation, the displacement is absorbed by the expandable and retractable plate, which prevents the cylindrical connection body from breaking, cracking, etc. There is no risk of leakage, and installation is easy. Furthermore, since the cylindrical connection body can be manufactured to a predetermined length in advance at a factory, there is no need to melt and bond it at the construction site as in the past. Unlike the cylindrical connection body, which has a hollow part and is relatively thick, there is no dead space, so there is no vortex in the airflow, and the wind speed distribution is good. It's not unsightly.

[Brief explanation of drawings]

Figure 1 is an overall schematic explanatory diagram, Figure 2 is an exploded perspective view of the main parts, Figure 3 is an enlarged sectional view of the main parts, and Figure 4 is an exploded perspective view of the main parts.
The figure is a schematic explanatory diagram of a conventional device, and FIG. 5 is an enlarged sectional view of the main part. In the figure, 3 is a filter holding frame, 5 is a filter unit, 6 is a wall surface, 8 and 9 are mounting plates, 1
0 and 11 are substrates, 12 and 13 are expandable plates, 14 is a hollow portion, and 16 is a cylindrical connection body.

Claims (1)

[Scope of utility model registration request] A filter device in which a cylindrical connecting body is connected and fixed by connecting and fixing a hollow part between a wall surface and a filter holding frame of a filter unit through a mounting plate and fixing expandable plates to upper and lower substrates respectively. .