JPH0326906Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a filter mounting device that blows air down from the ceiling surface as a laminar flow in a clean room.

(Prior art) This type of ceiling filter mounting device for a clean room involves constructing a lattice-shaped frame on the lower surface of the ceiling, placing square filter frames on each lattice-shaped opening of the frame, and connecting them airtight. As disclosed in Japanese Utility Model Application Publication No. 61-75816 as a device to improve this, when attaching the filter frame to the support frame, the metal fittings tied to the sides of the filter frame are made to face the metal fittings on the support frame side. By connecting both metal fittings with bolts, the filter frame is immovably connected to the support frame.

(Problem to be solved by the invention) However, when the metal fittings are connected with bolts within the opening of the support frame as described above, it is necessary to accurately oppose the two metal fittings and align the bolt holes correctly. In actual work, when the ceiling is high, it is difficult to handle a heavy filter frame and match the bolt holes, as in the above idea.
Even if a third hooking metal fitting is provided, it is still a complicated task, and furthermore, inserting a bolt into the bolt hole and rotating and tightening it is an extremely complicated and difficult task.
In addition, since it is necessary to provide metal fittings for tying the filter frame on both sides, the width of the frame is necessarily wide, and this width obstructs the laminar flow from top to bottom, causing turbulence on the bottom surface of the frame. As a result of the flow, it was inevitable that the laminar flow effect would deteriorate overall.

(Means for Solving the Problems) The present invention eliminates the disadvantages of the above-mentioned conventional designs, makes on-site installation work extremely easy, and simplifies the configuration without reducing the laminar flow effect of air. , Supporting materials with a channel-shaped cross section and long holes arranged at predetermined intervals in the bottom piece are fixed and fixed to the lower surface of the structure fixed to the ceiling at predetermined intervals in the length direction. Both sides of the rectangular filter frame are connected to the support material through hanging fittings. It is formed into a support part that is bent and supports the filter frame.

(Function) As shown in Figs. 1 and 2, the device of the present invention utilizes structural members 1 fixed to the ceiling, and is connected and fixed in parallel with a predetermined interval in the length direction. Attach the hanging fitting 3 to the support member 2 at its upper locking end 3a.
A support formed by inserting the support member 2 from below into the elongated hole 2a that is in contact with a predetermined position in the length direction of the support member 2 from below and then bending and locking it, and bending the lower support end 3b of the hanging metal fitting 3. By supporting the rectangular filter frame 4 at the upper part, the filter frames 4 are made to be adjacent to each other on the lower surface of the space between the adjacent support members 2, 2, and both sides of each filter frame 4 are connected to the elongated holes of the upper support member 2. The filter frame 2a is attached to the filter frame 2a via a hanging metal fitting 3, and this work can be done from the ceiling or the bottom surface as desired, and the gap between adjacent filter frames 4 is filled with a sealing material 5 to airtightly seal it.

During construction, a manhole for inspection should be provided in the ceiling, or the filter frame to be finally attached should be easily removable from the bottom, so that it can be removed at any time and used as a manhole for inspection. When disassembling for replacement, cleaning, or other purposes, cut off the sealing material 5 between the filter frames, enter the ceiling through the manhole, and attach the hanging metal fittings 3 to the support material 2.
By returning the bent locking portion 3a to its flat state and releasing the engagement with the elongated hole 2a, the filter frame 4 can be removed and dismantled downward together with the metal fitting 3.

(Example) Embodiments of the present invention will be described with reference to the drawings.

In the drawings, reference numeral 1 denotes a structural member, such as a building component, which is erected and fixed from the ceiling via a support metal fitting 7 with a hanging bolt 6, and a plurality of supporting members 2 are installed on the lower surface of the structural member 1 orthogonally thereto at predetermined intervals, i.e., They are mounted parallel to each other with an interval substantially equal to the width of a filter frame 4, which will be described later.

The support member 2 is made of a channel member having an M-shaped cross section, and long holes 2a are provided at predetermined intervals in the bottom piece of the support member 2 in accordance with the size of the filter frame 4.

Note that any means can be used to attach the support material 2 to the structural member 1, but in the illustrated example, the M-shaped cross section of the support material 2 is used, and one end is locked to the inner surface of the bent portion of the upper edge on both sides. A case is shown in which the hook-shaped latching fitting 8 whose other end is latched to the upper surface of the structural member 1 is used to immovably connect the structural member 1.

FIG. 3 shows a hanging metal fitting 3 used to attach the filter frame 4 to the support member 2. The metal fitting 3 has a locking part 3a formed by bending at the upper end of a rectangular metal plate. A support part 3b for supporting the filter frame 4 is formed by bending the lower end, and the upper end thereof is inserted into the elongated hole 2a of the support member 2, as shown in FIG.
After inserting the metal fitting 3 into the support member 2 from below, the metal fitting 3 is connected to the support member 2 by bending the locking part 3a and locking it so that it does not come out downward. The filter frame 4 is held by supporting the middle step part of the side frame. FIG. 5 shows another embodiment of the hanging fitting 3, in which the rectangular metal plate is made longer than that of the embodiment shown in FIG. A support portion 3b is formed by bending the same shape, and the lower surface of the side frame of the filter frame 4 is supported by the bent support portion 3b at the lower end during use, as shown in FIG. In addition, it is also possible to provide the hanging metal fitting 3 with a nail hole 3c as shown by the sketched line in the drawing, and to use the metal fitting 3 by tying it to the side surface of the filter frame 4 in advance.

Thus, the rectangular filter frame 4 is connected to the adjacent supporting members 2, 2 via the hanging fittings 3 on both sides thereof.
It is fixedly fixed vertically and horizontally at the lower part of the interval between the support members 2 and 3, and can be removed by releasing the suspension fittings 3 from the support member 2 at any time for replacement, cleaning, etc., if necessary. Furthermore, as shown in FIGS. 4 and 6, if a rectifying frame 9 which also serves as a sealing material and has a V-shaped cross section is provided over the lower surfaces of the joints of the adjacent filter frames 4 and 4, as shown by the arrow in the same figure. Since the laminar flow that tends to become turbulent on the adjacent lower surface can be guided by the straightening frame 9 and flowed downward as a laminar flow, generation of turbulent flow that is likely to occur on the adjacent lower surface of the filter frame 4 can be prevented and the first half can be improved. This can prevent the laminar flow effect from deteriorating.

(Effects of the invention) According to the invention, long holes are provided in the support member installed parallel to the fixed structure at a predetermined distance,
The filter frame is supported by the lower end bending support portion of the hanging fitting that is inserted into the long hole and bent and locked, and the upper and lower ends of the hanging fitting are bent vertically and horizontally on the lower surface of the support member. It can be attached to or detached from the support material by operation, and the operation is extremely simple.Moreover, the support materials for attachment and holding are simply erected in parallel at predetermined intervals, so the construction is simple and lightweight. This has the advantage that there is no need to particularly increase the strength of the building for this purpose.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a plan view, Fig. 2 is a perspective view of the main parts, Fig. 3 is a perspective view of the hanging fitting, and Fig. 4 is a case where the fitting is used. FIG. 5 is a perspective view of another embodiment of the hanging metal fitting, and FIG. 6 is a side view of the filter frame installed when the metal fitting is used. DESCRIPTION OF SYMBOLS 1... Structural material, 2... Support material, 2a... Long hole, 3... Hanging metal fittings, 3a... Upper end bending locking part, 3b... Lower end bending support part, 4... Filter frame.

Claims (1)

[Scope of utility model registration request] Supporting materials, each having a channel-shaped cross section and slotted holes at predetermined intervals in the bottom piece thereof, are tied and fixed to the lower surface of the structure fixed to the ceiling at predetermined intervals in the length direction. Both sides of the rectangular filter frame are tied to the supporting member via hanging fittings, and the upper part of the hanging fitting is a locking part that is inserted through the elongated hole of the supporting material and bent and locked, and the lower part is folded. A mounting device for a ceiling filter in a clean room, which is formed on a support that bends and supports a filter frame.