JPH11141941A - Air cleaning unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a modular air cleaning unit, along with an air filter and a fixing frame thereof, in which flexibility is enhanced by placing a hermetic sealing material between the air filter and the fixing frame thereof. SOLUTION: An air cleaning unit 1 comprises an air filter 2 and a fixing frame 4 thereof. The air cleaning unit 1 is supported by a chamber suspended from ceiling structure, or the like. The air filter 2 comprises a filter pack and an air filter frame 3 integrated structurally therewith while surrounding the outer circumference thereof. A hermetic sealing material is placed between the air filter frame 3 and the filter fixing frame 4 in order to seal them. The air filter frame 3 and the filter fixing frame 4 are jointed through pop nuts 8 and formed into integrated structure. Consequently, a flexible modular air cleaning unit is obtained and sealing performance is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifying unit which can be modularized by integrating an air filter and a filter mounting frame into a unit and has high flexibility.

[0002]

2. Description of the Related Art There are various kinds of known techniques relating to an air purifying unit.
No. 5 is disclosed. 4-14
FIG. 3 of Japanese Patent Publication No. 105 discloses a structure in which an air filter is fastened and fixed to a filter mounting frame provided in a chamber via a gasket with stud bolts. FIG. 2 shows an air filter of the air filter. The hanging edge (flange) of the air filter frame mounting body provided inside the unit frame of the chamber is airtightly connected to the air tight seal provided at the edge of the opening on the air inflow side of the frame, and circulates inside the unit frame. An airtight seal packing is provided for the air filter frame support provided to protrude outward, and is disposed on the inwardly protruding air filter frame support flange to be engaged with the air discharge side opening edge of the air filter frame. There is disclosed a structure that is airtightly fixed by bolting through.

[0003]

However, the structure disclosed in Japanese Utility Model Publication No. 4-14105 is not an integral structure of the air filter and the filter mounting frame, and the structure shown in FIG. There is a problem that dust leaks into the clean room from between the filter mounting frame and the welded portion of the stud bolt of the filter mounting frame. In addition, there is a problem that air stays in a useless space required for tightening the stud bolt, which causes dust to leak. In addition, the structure shown in FIG. 2 has a problem that the mounting structure of the air filter frame is slightly complicated and the mounting property is poor. It is desirable that the air filter and the filter mounting frame surrounding the air filter are integrally unitized and modularized, and that it is desirable to flexibly cope with a specification change. There are various methods for manufacturing the filter mounting frame. FIG. 10 and FIG. 11 show an example. As shown in FIG. 10, the filter mounting frame has four plate pieces 35, 35, 3
After bending each of the members 6 and 36, the joints are welded as shown in FIG. Plate pieces 35, 35,
By forming the cutouts at the corners of 36, 36, the respective plate pieces 35, 36, etc. are assembled without interference. However,
There is a problem that welding is required at least at each of the four upper and lower portions, which requires a great deal of time for the assembling work, and that it is not formed with high accuracy.

FIGS. 12 and 13 show a conventional example in which a filter mounting frame is formed from a single plate, and a flange portion surrounding an air flow opening is formed by an angle 37. FIG. As shown in FIG. 12, one plate member 38 has a central plate piece 40 forming an opening hole 39 corresponding to an air flow opening in the center, and side plate pieces 41, 41, 42, 42.
The side plate pieces 41, 42 are outer wall frame plate pieces 43, corresponding to the outer wall frame.
43, 44, and 44, and folded part plate pieces 45, 45, 46, 46, etc., provided at the leading edge thereof and corresponding to the folded parts.

[0005] From the unfolded state shown in FIG.
9, 49, 50, 50, the side plate pieces 45, 46 are bent, and then the folded part plate pieces 41, 42 are bent along bending lines 47, 4.
The box-shaped frame shown in FIG. 13 is formed by folding and inverting along 7, 48, and 48. Angle 37
Is welded to the central plate member 40 as shown in the figure to form a filter mounting frame.

When a filter mounting frame of this type is engaged with an air filter as shown in FIG.
Is not inclined, the dimension a is set as shown in FIG.
Becomes a fixed size. However, when the angle 37 is spot-welded to the central plate 40 via a gap, the flange 37a is inclined by an angle θ, and the dimension between the groove 37 and the groove 11 is a ′> a, and the flange 37a is formed. Is also unstable, and when the dimension a 'is larger than the thickness h of the sealing material 5, there is a problem that the sealing performance is deteriorated. There is also a problem that welding of the angle 37 becomes unstable.

The present invention has been made in view of the above circumstances, and the air filter and the filter mounting frame have an integral structure, and can be made into any shape, thereby improving flexibility and modularization. It is an object of the present invention to provide an air purification unit capable of performing the above, a filter mounting frame and an air filter for constituting the air purification unit. A further object of the present invention is to provide a filter mounting frame formed by bending a single plate material without any mutual interference and with high precision.

[0008]

In order to achieve the above object, an air purifying unit of the present invention is an air purifying unit in which an air filter and a filter mounting frame surrounding the air filter are detachably provided in an integrated structure. A sealing material is interposed between the air filter and the filter mounting frame.

The air purifying unit according to a second aspect of the present invention is an air purifying unit in which an air filter and a filter mounting frame surrounding the air filter are detachably provided in an integrated structure. The filter mounting frame is characterized in that an upper side thereof is in close contact with the filter mounting frame via a sealing material, and a lower side is fixed to a lower surface of the filter mounting frame.

[0010] The filter mounting frame of the present invention is a filter mounting frame for constituting the air purifying unit according to claim 2, and surrounds the air filter at a suitable interval with a side wall portion of the air filter. An outer peripheral frame, a folded portion bent substantially inwardly from an upper end of the outer peripheral frame to form an upper surface of the filter mounting frame, and a folded portion bent downward from an inner edge of the folded portion to form an upper air flow opening. An upper flange portion forming a peripheral edge, a fixing member receiving portion bent substantially inward from a lower end of the side wall portion to form a lower surface of the filter mounting frame, and a part of an inner edge of the fixing member receiving portion Or a lower flange portion which is bent upward from the whole and forms part or all of the peripheral edge of the lower air flow opening.

According to a fourth aspect of the present invention, in the filter mounting frame, the filter mounting frame is formed of a box-shaped frame by bending a single plate material. From the side, a lower flange portion plate piece corresponding to a lower flange portion surrounding the lower air flow opening, a fixing member receiving portion plate piece corresponding to the fixing member receiving portion, and an outer wall frame plate corresponding to the outer peripheral frame And an upper flange part plate corresponding to the upper flange part formed on the outermost side and surrounding the upper air flow opening, and are orthogonal to each other at the time of bending. The folded back plate and the upper flange plate are provided with cutouts for preventing mutual interference.

Further, the air filter of the present invention is characterized in that
An air filter for configuring the air purifying unit according to the above, comprising a filter pack and an air filter frame formed integrally therewith surrounding the filter pack, the air filter frame is provided on the outer periphery of the filter pack A frame-shaped side wall that is in intimate contact, a groove formed in an upper peripheral edge of the side wall, into which the sealing material is inserted, and a part or the entire lower peripheral edge of the side wall that is formed so as to protrude outward and is mounted on the filter. It is characterized by having a fixing member having a shape that comes into contact with the fixing member receiving portion of the frame.

The air filter and a filter mounting frame surrounding the air filter are integrally connected to form a unit. In this state, the air cleaning unit is fixed and supported on a ceiling frame or the like. Therefore, this air purifying unit has a large degree of freedom in the combination shape of the air filter and the filter mounting frame, and has high flexibility and can be modularized. In addition, the filter mounting frame is formed by bending a single plate, so that it is extremely easy to make, and since there is no mutual interference, it is formed with high precision.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the air purifying unit of the present invention will be described below in detail with reference to the drawings. 1 to 3
FIG. 4 is a view showing the entire structure of the air cleaning unit of the present invention, FIG. 4 shows an air filter in this embodiment, and FIGS. 5 to 7 show a filter mounting frame. FIG.
FIG. 9 is a development view of a filter mounting frame composed of a single plate, and FIG.
Is a partial assembly view thereof.

As shown in FIGS. 1 to 3, the air cleaning unit 1 of the present invention is roughly divided into an air filter 2 and a filter mounting frame 4. The air cleaning unit 1 is supported by a chamber (all not shown) hanging from a ceiling frame or the like. The air filter 2 includes a filter pack 2a and an air filter frame 3 which is formed so as to surround the outer periphery of the filter pack 2a and to be integrally formed in an integral structure. A sealing material 5 is interposed between the air filter frame 3 and the filter mounting frame 4 to seal between the two. The air filter frame 3 and the filter mounting frame 4
Are connected by a screw 7 and a pop nut 8 to form an integral structure.

First, the structure of the air filter 2 will be described with reference to FIGS. The filter pack 2a is for purifying air, and is surrounded by an air filter frame 3 as a frame. The air filter frame 3 includes a side wall portion 10 which is in close contact with and surrounds the outer periphery of the filter pack 2a, and a frame body portion 12 formed above and forming a groove portion 11 and the like. In addition,
The side wall 10 is formed of a hollow frame that forms the space 9. A fixing member 14 is formed below the side wall portion 10 so as to protrude outward from a peripheral edge thereof. As shown in FIG. 4, in this example, the fixing member 14 is formed only on a part of the lower peripheral edge of the side wall portion 10.
It may be formed over the entire lower peripheral edge.

Next, the structure of the filter mounting frame 4 is mainly shown in FIG.
This will be described with reference to FIGS. The filter mounting frame 4 has an air flow hole 13 formed inward and an air flow hole 1 formed above and below.
It consists of a box-shaped frame body that forms openings 5 and 16. The air filter 2 is housed in the air flow hole 13. The outer frame 1 surrounding the side wall 10 is disposed at an appropriate distance from the side wall 10 of the air filter frame 3.
7, a folded portion 18 formed by being bent inward at a substantially right angle from above the outer peripheral frame 17, an upper flange portion 19 bent substantially at a right angle downward from an end of the folded portion 18, It comprises a fixing member receiving portion 20 which is bent inward at a substantially right angle from below the outer peripheral frame 17, and a lower flange portion 21 which is bent at a substantially right angle upward from this end. In this example, the lower flange portion 21 is formed only on a part of the lower peripheral edge of the outer peripheral frame 17, but may be formed entirely. Further, the upper flange portion 19 surrounds the upper air circulation port 15,
The inner edge of the fixing member receiving portion 20 and the lower flange portion 21 surround the lower air flow port 16.

Next, a method of assembling the air cleaning unit 1 will be described mainly with reference to FIGS. First, the air filter frame 3
The sealing material 5 is inserted into the groove 11 of the frame 12.
In addition, the second surface of the fixing member 14 of the air filter frame 3 is
Is adhered. As the sealing material 5, a material having a sealing property is adopted.
A jelly-like sealant made of a viscoelastic material such as silicone gel having adhesive force and elasticity as disclosed in Japanese Patent No. 3112 is preferable. Of course, it is not limited to this.

The air filter 2 is mounted on the filter mounting frame 4
Is inserted into the filter mounting frame 4 from the side of the air flow port 16 below. Thereby, the filter mounting frame 4 is provided in the groove 11.
The upper flange portion 19 enters the upper flange portion 19.
Is pressed against the sealing material 5. The outer surface of the side wall portion 10 of the air filter frame 3 abuts on the lower flange portion 21 of the filter mounting frame 4 and is positioned at the center. Further, as shown in the drawing, the upper flange portion 19 is pressed almost vertically to the sealing material 5 while being positioned at a substantially central position of the groove portion 11. In this state, as shown in FIG. 2, the screw 7 is inserted from below the fixing member 14 and fixed by the pop nut 8, so that the air filter 2 and the filter mounting frame 4 are integrally fixed and become portable. Even if the size or shape of the air filter 2 changes, the filter mounting frame 4 may be formed in a shape corresponding to the change, and an air cleaning unit having an arbitrary combination shape can be formed.

FIG. 8 shows a developed shape of the plate material when the filter mounting frame 4 is formed from a single plate material. An opening 23 having an area corresponding to the lower air flow opening 16 is punched and formed in the center of the plate member 22. Opening 2
3, lower flange portion plates 24, 24 corresponding to the lower flange portion 21 are formed at positions facing each other, and fixed member receiving portion plate pieces 25, 25 corresponding to the fixed member receiving portion 20 are formed. It is formed at a position orthogonal to the lower flange plate 24. Hereinafter, for convenience of description, the direction in which the lower flange portion plate pieces 24, 24 are formed is referred to as an X direction, and a direction orthogonal thereto is referred to as a Y direction.

In the X direction, the fixing member receiving portion plate pieces 25 and 25 corresponding to the fixing member receiving portion 20 and the outer peripheral frame corresponding to the outer peripheral frame 17 are provided outwardly and continuously from the lower flange portion plate piece 24. Plate pieces 26, 26, folded part plate pieces 27, 27 corresponding to the folded part 18, and upper flange plate pieces 28, 28 corresponding to the upper flange part 19 are formed. On the other hand, in the Y direction, the outer peripheral frame plate pieces 29, 29 corresponding to the outer peripheral frame 17 connected to the fixing member receiving portion plate pieces 25, 25, the folded portion plate pieces 30, 30, corresponding to the folded portion 18, the upper flange portion Upper flange portions 31 and 31 corresponding to 19 are formed respectively. The filter mounting frame 4 of a box-shaped frame is formed by bending each plate at the above-mentioned folding curve between the plates.

As shown in FIG. 8, cutouts 32 are formed at both ends in the longitudinal direction of the lower flange plate piece 24 in the X direction, and this portion is easily bent. Further, both ends of the outer peripheral frame plate piece 26 in the X direction and the outer peripheral frame plate piece 29 in the Y direction are formed in contact with each other. Notches 33 are formed at both ends of the folded portion plate piece 30 in the Y direction so that both ends of the piece 30 do not interfere with each other. Notches 34 are also formed so that the upper flange plate pieces 28 and 31 in the X and Y directions do not interfere with each other at the time of bending.

FIG. 9 shows one sheet material 22 shown in FIG.
The direction is the lower flange part plate piece 24, the fixing member receiving part piece 2
5, in the order of the outer frame plate 26, the folded plate 27, and the upper flange plate 28, the fixing member receiving plate 25, the outer frame plate 29, the folded plate 30, the upper flange plate are arranged in the Y direction. Piece 3
1 shows a partially assembled form of a filter mounting frame 4 formed by bending in the order of 1. Notch 32 as shown
The lower flange plate 24 is smoothly bent, and the folded plate 27, 30 and the upper flange plate 28, 31 are engaged by the cutouts 33, 34 without interference and without any gap. The filter mounting frame is bent into a predetermined shape by welding the engaging portion as shown. Weld 50
Since only the portion shown in FIG. 9 is required, the welding distance is drastically reduced as compared with the conventional art, and as a result, the seal portion is also drastically reduced.

[0024]

1) According to the air purifying unit of the present invention, the air filter and the filter mounting frame are integrally formed via the sealing material, and the air purifying unit having a desired shape can be formed. Therefore, a flexible air purifying unit can be formed, and modularization becomes possible. Further, the sealing property can be improved. 2) Further, according to the filter mounting frame for constituting the air cleaning unit of the present invention, the filter mounting frame is formed by bending a single plate material, so that the filter mounting frame can be easily and inexpensively implemented. Further, by forming the cutout, mutual interference is prevented, and the cutout is formed with high precision. Further, since the welding distance is shortened, the number of seal portions is reduced, and the reliability of the seal is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of an air cleaning unit of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a perspective view showing an appearance of an air filter in the air cleaning unit of the present invention.

FIG. 5 is a perspective view showing an appearance of a filter mounting frame in the air cleaning unit of the present invention.

FIG. 6 is a sectional view taken along line CC of FIG. 5;

FIG. 7 is a sectional view taken along line DD of FIG. 5;

FIG. 8 is a plan view showing a developed shape of the plate material for bending and forming a filter mounting frame from one sheet material.

FIG. 9 is a perspective view showing a part of a state where the plate material shown in FIG. 8 is bent.

FIG. 10 is a plan view showing the shape of a conventional filter mounting frame.

FIG. 11 is a perspective view showing a filter mounting frame assembled by using the plate material of the flat plate shown in FIG. 10;

FIG. 12 is a plan view showing a developed shape of the plate material of a filter mounting frame made of one sheet material;

13 is a perspective view showing a filter mounting frame formed by bending the plate member of FIG. 12 and welding an angle corresponding to an upper flange portion.

14A and 14B are partial cross-sectional views showing an engagement state between an angle and a sealing material in FIG. 13;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air purification unit 2 Air filter 2a Filter pack 3 Air filter frame 4 Filter mounting frame 5 Sealing material 7 Screw 8 Pop nut 9 Space part 10 Side wall part 11 Groove part 12 Frame part 13 Air circulation hole 14 Fixing member 15 Air circulation port ( 17) Outer peripheral frame 18 Folding portion 19 Upper flange portion 20 Fixed member receiving portion 21 Lower flange portion 22 Plate material 23 Opening 24 Lower flange portion plate piece 25 Fixed member receiving portion plate piece 26 Peripheral frame plate Piece 27 folded part piece 28 upper flange part piece 29 outer peripheral frame piece 30 folded part piece 31 upper flange part piece 32 notch part 33 notch part 34 notch part

Claims (5)

[Claims] An air purifying unit in which an air filter and a filter mounting frame surrounding the air filter are detachably provided in an integrated structure, wherein a sealing member is interposed between the air filter and the filter mounting frame. An air purifying unit characterized in that: 2. An air purifying unit in which an air filter and a filter mounting frame surrounding the air filter are detachably provided in an integrated structure, and the upper side of the air filter is in close contact with the filter mounting frame via a sealing material. An air purifying unit, wherein a lower side is fixed to a lower surface of the filter mounting frame. 3. A filter mounting frame for constituting the air purifying unit according to claim 2, wherein an outer peripheral frame surrounding the air filter is provided at an appropriate distance from a side wall of the air filter. A folded portion bent substantially inwardly from the upper end to form an upper surface of the filter mounting frame, and an upper flange portion bent downward from an inner edge of the folded portion to form a peripheral edge of an upper air flow opening; A fixing member receiving portion which is bent substantially inward from the lower end of the side wall portion to form the lower surface of the filter mounting frame, and which is bent upward from a part or all of the inner edge of the fixing member receiving portion. A lower flange portion that forms part or all of the periphery of the lower air flow opening. 4. The filter mounting frame is formed by bending a single plate material to form a box-shaped frame, and in the expanded shape of the plate material, connects the lower air flow opening from the inner side. A lower flange portion plate piece corresponding to the surrounding lower flange portion,
A fixing member receiving portion plate piece corresponding to the fixing member receiving portion,
An outer wall frame plate corresponding to the outer peripheral frame, a folded portion plate corresponding to the folded portion, and an upper flange portion plate formed on the outermost side and corresponding to an upper flange portion surrounding the upper air flow opening. The notch part which prevents mutual interference is formed in said folded part plate piece and upper flange part plate piece which are orthogonally arranged at the time of bending. Air filter mounting frame described. 5. An air filter for constituting the air purifying unit according to claim 2, comprising: a filter pack and an air filter frame surrounding the filter pack and integrally formed. A frame-shaped side wall portion that is in close contact with the outer periphery of the filter pack, a groove portion formed on the upper peripheral edge of the filter pack, into which the sealing material is inserted, and a part or the entirety of the lower peripheral edge of the side wall portion facing outward. An air filter, comprising: a fixing member formed so as to protrude and abut on a fixing member receiving portion of the filter mounting frame.