JP2002001041A - Protecting device for filter medium of ceiling blow-off fan filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure that a filter medium is not damaged when a fan unit is mounted on the upstream side of a filter body of a ceiling blow-off fan filter. SOLUTION: A protecting plate 5 is fixedly set at each of corner angular parts of mutually adjacent frame plates 1a-1d on the upstream side of the filter body 4 equipped with the filter medium 3 in such a way that air-permeable parts 6 are provided on the corner angular part sides.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling blower fan filter, and more particularly to a device for protecting a filter medium in a ceiling blower fan filter for preventing breakage of the filter medium when a fan unit is mounted upstream of the filter.

[0002]

2. Description of the Related Art Conventionally, a method of mounting a fan unit upstream of a HEPA or ULPA filter provided on a ceiling surface of a clean room (fan filter unit).
Are often adopted. As shown in FIG. 7, the protection of the filter medium in the above-mentioned conventional method is performed on the entire surface of both the upstream side and the downstream side of the filter medium 32 constituting the filter 31, such as a lath net of aluminum, steel plate, stainless steel or the like. Wire mesh,
Alternatively, it is covered with a protective member 33 made of a perforated plate of the same material.
Unit 3 with fan 34 mounted on the upper surface on the upstream side
5 is mounted, the filter medium 32 is
Had the function of protecting the upstream surface from being damaged.

[0003]

In the above-mentioned conventional filter medium protection device, with respect to the entire protection of the filter medium 32 on the downstream side of the filter, the downstream surface of the filter 31 is exposed on the ceiling surface after the filter 31 is installed, so that an operator can enter the room. Since the downstream surface of the filter 31 may be damaged, it is necessary to cover and protect the entire downstream side of the filter medium 32 with a protective member 33 such as a wire mesh or a perforated plate. However, on the upstream side of the filter medium 32, when the fan unit 35 is mounted on the upstream side of the filter 31, in order to prevent the filter medium 32 on the upstream side of the filter 31 from being damaged, the protective member 33 is provided on the entire upstream side. However, after the fan unit 35 is mounted on the upstream side of the filter 31, the upstream surface of the filter 31 is concealed, so that there is a problem that an expensive protection member is wasted.

According to the present invention, when investigating the location of damage on the upstream surface of the filter medium when the fan unit is mounted on the upstream side of the filter, it is found that 90% or more are concentrated on the corners or side surfaces of the upstream surface of the filter medium. In view of the above, it is an object of the present invention to provide a filter medium protection device for a ceiling blower fan filter that protects only a corner portion or a side portion on the upstream side of the filter medium.

[0005]

According to the present invention, a filter body is formed by attaching and fixing a filter medium to an inner surface of a filter frame formed by joining and fixing four frame plates in a rectangular frame shape.
Means of fixing a protection plate at each corner of a frame plate adjacent to each other on the upstream side of the filter body and having a ventilation portion on a corner side of the protection plate, and four frame plates. A filter medium is mounted and fixed to the inner surface of a filter frame formed by joining and fixing the filter body in a rectangular frame shape, and a filter body is formed. On the upstream side of the filter body, corner portions of frame plates adjacent to each other are formed. Means for erection and fixing a protection plate formed in a triangular shape and provided with a plurality of ventilation portions, and an inner surface of a filter frame formed by joining and fixing four frame plates in a square frame shape. The filter body is attached and fixed to form a filter body, and on both sides of each of the frame plates disposed at right angles to the fold portion so as to be parallel to the fold portion of the filter material on the upstream side of the filter body. A protective plate outside the protective plate, and Means having a ventilation portion on each frame plate side arranged in parallel with each other and fixedly mounted, respectively, and a filter medium is formed on the inner surface of a filter frame formed by joining and fixing four frame plates in a rectangular frame shape. Is attached and fixed to form a filter main body, and at the upstream side of the filter main body, protection is provided on both sides of each frame plate disposed in parallel with the folding part so as to be perpendicular to the folding part of the filter medium. Means for mounting and fixing the plates so as to have ventilation portions on the side of each of the frame plates disposed outside of the protective plate and at right angles to the folding portion, and the four frame plates are rectangular. A filter medium is mounted and fixed on the inner surface of the filter frame formed by joining and fixing in a frame shape to form a filter main body, and, on the upstream side of the filter main body, both side portions of a mutually facing frame plate forming the filter frame. Crossing the protection plate, each said protection plate Means that each bridging fixed so as to have a vent in the frame plate side located Risotokata, by adopting any one of,
The above problem has been solved.

[0006]

FIG. 1 is a perspective view showing a first embodiment of the present invention, in which four aluminum frame plates are shown. 1a-1
The filter medium 3 is mounted and fixed on the inner surface of the filter frame 2 formed by joining and fixing the filter members d in a rectangular frame shape, and the filter body 4 is formed. On the upstream side of the filter body 4, the frame plates 1a
b, 1b.1c, 1c.1d, 1d.1a, at each corner, the adjacent frame plates 1a.1b, 1b.1c, 1c.
A protective plate 5 made of a metal such as aluminum is obliquely mounted and fixed between 1d, 1d and 1a so as to have a ventilation portion 6 on the corner side of the protective plate 5.

That is, the protection plate 5 is attached to the filter body 4
Are formed in a width that does not hinder the ventilation of the filter medium 3 and that can sufficiently withstand the strength. On the downstream side of the filter body 4, a protection member 7 made of a wire mesh or a perforated plate is attached over the entire surface as in the conventional case (FIG. 2).

[0008] Then, the filter main body 4 having the above-described configuration.
Is mounted on a grid 8 suspended from a ceiling surface (not shown), and a fan unit 10 having a fan 9 mounted on the filter body 4 in the form shown in FIG. And is mounted without damaging the upstream side of the filter medium 3.

FIG. 3 is a perspective view showing a second embodiment of the present invention, and the adjacent frame plates 1a, 1b, 1b, 1c, 1c, 1 are located upstream of the filter body 4.
In order to cover the corners of d, 1d and 1a, the protective plate 5 is formed in a triangular shape with a metal such as aluminum, and a plurality of through holes are formed in the plate surface to form a ventilation portion 6. The protective plate 5 is connected to the adjacent frame plates 1a, 1b, 1b.
1c, 1c and 1d, and 1d and 1a, respectively.

FIG. 4 is a perspective view showing a third embodiment of the present invention. The frame plate is arranged upstream of the filter main body 4 so as to be parallel to the folded portion 3a of the filter medium 3. As shown in FIG. A rectangular protection plate 5 made of metal such as aluminum is provided on both sides of the frame plates 1a and 1c disposed at right angles to the folding portion 3a among the protection plates 5a to 1d. ,
And frame plates 1b and 1 arranged in parallel with the folded portion 3a.
Each is erected and fixed so as to have the ventilation part 6 on the d side.

FIG. 5 is a perspective view showing a fourth embodiment of the present invention. The frame plate is arranged so as to be perpendicular to the folded portion 3a of the filter medium 3 on the upstream side of the filter main body 4. A rectangular protective plate 5 made of a metal such as aluminum is provided on both sides of the frame plates 1b and 1d provided in parallel with the folded portion 3a among the protective plates 5a to 1d. ,
And the frame plates 1a and 1 disposed at right angles to the folding portion 3a.
Each is erected and fixed so as to have the ventilation part 6 on the c side.

FIG. 6 is a perspective view showing a fifth embodiment of the present invention. At the upstream side of the filter main body 4, among the frame plates 1a to 1d, the frame plates 1a. A rectangular protection plate 5 made of aluminum or metal intersects both side edges between 1c, 1b and 1d, and a ventilation portion 6 is provided on each of the frame plates 1a to 1d located outside the protection plate 5. Each is erected and fixed.

The operation of the protection plate 5 shown in the second to fifth embodiments is the same as that of the first embodiment, and the description is omitted.

[0014]

As described above, according to the present invention, since the corners and side surfaces of the filter medium on the upstream side of the filter body are protected by the protective plate, the filter medium of the filter body may be damaged when the fan unit is mounted. Without the use of expensive protection members, and can be provided at a low cost,
It has excellent effects.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a filter medium protection device in a ceiling blower fan filter of the present invention.

FIG. 2 is a longitudinal sectional view showing the same use state.

FIG. 3 is a perspective view showing a second embodiment of a filter medium protection device in a ceiling blower fan filter of the present invention.

FIG. 4 is a perspective view showing a third embodiment of a filter medium protection device in a ceiling blower fan filter of the present invention.

FIG. 5 is a perspective view showing a fourth embodiment of a filter medium protection device in a ceiling blower fan filter of the present invention.

FIG. 6 is a perspective view showing a fifth embodiment of a device for protecting a filter medium in a ceiling blower fan filter of the present invention.

FIG. 7 is a longitudinal sectional view showing a usage state of a filter medium protection device in a conventional ceiling blower fan filter.

[Description of Signs] 1a to 1d frame plate, 2 filter frame, 3 filter medium, 3a
Folding part, 4 filter body, 5 protection plate, 6 ventilation part.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3L058 BF01 BG03 4D058 JA14 KA01 KA06 KA25 KA29 KB02 KC02 KC54 QA01 QA11 SA04 UA25

Claims (5)

[Claims] 1. A filter body is formed by mounting and fixing a filter medium on an inner surface of a filter frame formed by joining and fixing four frame plates in a rectangular frame shape, and a filter body is formed upstream of the filter body. A protection device for a filter medium in a ceiling blower fan filter, wherein a protection plate is provided at each corner of an adjacent frame plate and has a ventilation portion at a corner side of the protection plate and is erected and fixed. 2. A filter body is formed by attaching and fixing a filter medium to an inner surface of a filter frame formed by joining and fixing four frame plates in a rectangular frame shape, and a filter body is formed on the upstream side of the filter body. A device for protecting a filter material in a ceiling blower fan filter, wherein a protection plate formed in a triangular shape and provided with a plurality of ventilation portions is erected and fixed at each corner of adjacent frame plates. 3. A filter body is formed by attaching and fixing a filter medium to an inner surface of a filter frame formed by joining and fixing four frame plates in a rectangular frame shape, and the filter body is provided at an upstream side of the filter body. Protective plates are disposed on both sides of each frame plate disposed at right angles to the folded portion so as to be parallel to the folded portion of the filter medium, and are provided outside the protective plate and parallel to the folded portion. A device for protecting a filter material in a ceiling blower fan filter, wherein the filter material is fixedly installed so as to have a ventilation portion on each of the provided frame plates. 4. A filter body is formed by attaching and fixing a filter medium to an inner surface of a filter frame formed by joining and fixing four frame plates in a rectangular frame shape, and the filter body is formed on the upstream side of the filter body. Protective plates are arranged on both sides of each frame plate disposed in parallel with the folded portion so as to be at right angles to the folded portion of the filter medium, and are disposed outside the protective plate and at right angles to the folded portion. A device for protecting a filter material in a ceiling blower fan filter, wherein the filter material is fixedly installed so as to have a ventilation portion on each of the provided frame plates. 5. A filter body is formed by attaching and fixing a filter medium to an inner surface of a filter frame formed by joining and fixing four frame plates in a rectangular frame shape, and a filter is provided upstream of the filter body. The protective plates intersect at both sides of the frame plates facing each other constituting the frame, and are fixedly installed so as to have a ventilation portion on each frame plate side located outside the respective protective plates. Protection device for ceiling blower fan filter.