JPH0244815Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial Application Field" This invention relates to the structure of a clean room laminar flow ceiling module used in a clean room.

``Prior art'' When creating a clean room, a high-performance ceiling filter for clean rooms is installed on the ceiling air outlet surface.
Supply clean air into the room at a low flow rate. As shown in FIG. 5, this clean room ceiling filter 1 generally has a structure in which a rectangular cylindrical frame 2 and a high-performance filter element 3 are tightly attached to the inside of the rectangular cylindrical frame 2. This filter 1 is attached to the ceiling of a room as shown in FIG. 6, and has a structure in which air sent by a blower 4 is purified by the filter 1 and sent into the room.

As shown in FIG. 6, the conventional ceiling support structure for mounting a filter on a ceiling is, for example, a ceiling support member 5 having a T-shaped cross section is installed near the ceiling in a grid pattern, and the filter 1 is placed on the flange portion 5A of this ceiling support member 5. I support it.

``Problem that the invention attempts to solve'' When using the conventional filter mounting structure, when installing the filter 1, the filter 1 is placed diagonally between the ceiling supports 5 and 5, as shown by the dotted line in the figure. After inserting the filter 1 completely into the attic space, the work of placing the filter 1 on the flange portion 5A of the ceiling support member 5 is carried out. Further, when removing the filter 1, it is necessary to lift the filter 1 upward and then lower it diagonally through the space between the ceiling support members 5 and 5. Moreover, since the filter 1 is heavy, it is difficult for one person to replace the filter 1.

Furthermore, since the filter 1 must be completely lifted above the ceiling support 5, the distance L between the ceiling support 5 and the attic or upper floor 6 must be relatively large. As a result, the ceiling surface formed by the filter 1 becomes low, resulting in an inconvenience that the ceiling of the working room becomes low.

"Means for Solving Problems" This invention includes a clean room ceiling filter 1 in which a high-performance filter element for air purification is closely attached within a rectangular cylindrical frame, and a clean room ceiling filter 1.
The square tubular frame 2 of the filter 1 is rotatably suspended from a ceiling supporting member 5 that supports the ceiling at a distance between two parallel sides of the frame 2, and is engaged with the square tubular frame 2 of the filter 1 at its lower end. The folded portions 7 protrude in the direction facing each other.
A rotary support plate 7 with A and a folded part 7A of this rotary support plate 7 are screwed together. A laminar flow ceiling module for a clean room is constituted by bolts 9 that move the frame 2 upward and press the upper end against the ceiling support member 5.

(Function) According to the configuration of this invention, when removing the clean room ceiling filter 1 from the ceiling, the filter 1 can be removed simply by loosening the bolts and rotating the rotating support plate 7 outward.

Also, when installing filter 1, rotate support plate 7
Rotate outward to widen the distance between the opposing sides,
Insert the filter 1 in between and then rotate the support plate 7.
When the folded portion 7A provided on the rotating support plate 7 engages with the lower end of the rectangular cylindrical frame 2 of the filter 1, the filter 1 is temporarily supported. be able to. By tightening the bolts 9 in this state, the filter 1 can be moved upward and the four circumferences of the upper end of the rectangular cylindrical frame 2 can be pressed against and supported by the ceiling support material. Installing the filter,
This provides the advantage of easy removal.

``Example'' Figure 1 shows an example of this invention. In the figure, 1 indicates a ceiling filter for clean rooms. As explained in FIG. 5, this filter 1 has a structure in which a rectangular cylindrical frame 2 and a high-performance filter element 3 are housed in close contact with the rectangular cylindrical frame 2. 5 indicates a ceiling support material. As shown in FIG. 4, this ceiling support material 5 is assembled in a lattice shape and is suspended and supported by, for example, hanging bolts at a ceiling forming position in the room.

In this invention, a rotating support plate 7 is provided on the lower surface of the ceiling support member 5. That is, two rotary support plates 7 are provided along two opposing sides in the grid formed by the ceiling support member 5. For example, a hinge can be used as the rotation mechanism for the rotation support plate 7.
It is suspended from the lower surface of the ceiling support member 5 by a hinge.

A folded portion 7A is provided on the lower side of the rotation support plate 7.
A nut 8 is welded to this folded portion 7A, and a bolt 9 is screwed into this nut 8. The lower end of the bolt 9 has a groove 9A, and the bolt 9 can be rotated from below by engaging a driver with the groove 9A. By rotating the bolt 9, the amount by which the bolt 9 projects from the upper surface of the folded portion 7A can be changed.

When the filter 1 is placed on the folded portion 7A, the rectangular cylindrical frame 2 of the filter 1 is engaged with the bolt 9. By tightening the bolts 9, the filter 1 is pressed upward, and the sealing material 11 attached to the upper end of the rectangular cylindrical frame 2 is pressed against the lower surface of the ceiling support member 5, sealing the four circumferences of the filter 1.

As shown in FIG. 2, a tightening mechanism consisting of a bolt 12 and a receiving nut 13 is provided on the side where the rotation support plate 7 is not attached, and the filter 1 is mainly attached to this tightening mechanism. Therefore, it is supported as shown in FIG. Note that the reference numeral 14 shown in FIG. 3 indicates a fluorescent lamp.

(Operation of the embodiment) According to the implementation structure shown in FIGS. 1 to 3, in order to remove the filter 1 from the state shown in FIG. 1, the bolt 12 shown in FIGS. After removing it, loosen bolt 9. The bolt 9 is moved downward until the upper end of the rectangular cylindrical frame 2 of the filter 1 is separated from the lower surface of the ceiling support member 5.

When the upper end of the rectangular cylindrical frame 2 separates from the lower surface of the ceiling support member 5, the filter 1 can be lowered by supporting the filter 1 by hand and pushing and expanding the rotary support plate 7.

To attach the filter 1, the lower end of the rotary support plate 7 is pushed apart as shown in FIG. 2, and the filter 1 is inserted into the space between the pushed and spread out ends. When the filter 1 reaches the predetermined position, the rotation support plate 7
Close. When the rotation support plate 7 is closed, the square cylindrical frame 2 of the filter 1 engages with the upper end of the bolt 9, and by tightening the bolt 9 in this state, the square cylindrical frame 2
The sealing material 11 attached to the upper end is pressed against the ceiling support material 5 and becomes temporarily fixed.

With the filter 1 temporarily fixed by the rotary support plate 7, the bolt 12 provided on the other side is screwed into the nut 13 to support the filter 1 on the lower surface of the ceiling support member 5.

"Effects of the Invention" As described above, according to this invention, the filter 1 can be attached and removed without being pushed above the ceiling support member 5. As a result, the installation position of the ceiling support material 5 does not have to be far away from the floor of the upper floor or the attic. Therefore, the height of the ceiling can be increased.

Further, since the filter 1 is constructed so that it can be temporarily fixed by the folded portion 7A of the rotating support plate 7, there is an advantage that the filter 1 can be easily attached and detached.

[Brief explanation of the drawing]

Figures 1 to 3 are cross-sectional views showing one embodiment of this invention, Figure 4 is a perspective view for explaining the structure of the ceiling support material, and Figure 5 is a diagram for explaining the structure of a clean room ceiling filter. FIG. 6 is a sectional view for explaining a conventional filter mounting structure. 1: Filter, 2: Rectangular tubular frame, 3: Filter element, 4: Air blower, 5: Ceiling support material, 6: Upper floor or roof, 7: Rotating support plate, 7A: Folded part, 8:
Nut, 9: Bolt, 9A: Groove, 11: Seal material, 12: Bolt, 13: Nut.

Claims (1)

[Scope of Claim for Utility Model Registration] A. A ceiling filter for a clean room in which an air purifying filter element is closely attached to a rectangular cylindrical frame, and B. The distance between two mutually parallel sides of the rectangular cylindrical frame of this ceiling filter for a clean room. a rotatable support plate that is rotatably suspended from a ceiling support member that supports the ceiling at a distance of about 100 mm, and has folded portions at its lower ends that protrude in directions facing each other so as to engage with the rectangular cylindrical frame of the filter; C: a tightening screw that is screwed into the folded part of the rotary support plate and moves the square tubular body upward with the square tubular frame of the filter placed on the folded part; Laminar flow ceiling module for clean rooms.