JP2007232278A - Air blowout port structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air blowout port structure with improved appearance by providing easy and quick correction of twisting of a decorative panel, even when a filter unit, and, the decorative panel are twisted in a planar direction. <P>SOLUTION: In the air blowout port structure attached with the decorative panel 13, a plurality of air blowout holes 13d is formed in a lower part protruding downward from a ceiling panel of the filter unit suspended by a hang bolt and connected to a duct. In the decorative panel 13, a plurality of oblong bolt holes 21 extending in a circumferential direction is provided on the same circumference C as seen from above, and by screwing bolts passed through the bolt holes 21 through nuts provided in a casing of the filter unit, the decorative panel 13 is attached to the lower part of the filter unit. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air outlet structure applied to a clean room or the like.

  For example, in a clean room, the air supplied from a duct is blown out from the air outlet through a filter unit installed on the ceiling. Thus, an example of the arrangement in the vicinity of the air outlet for blowing out such air is shown in FIGS. In the drawing, reference numeral 1 denotes a filter unit such as a high efficiency particulate air (HEPA) filter, which includes a box-shaped casing 2 having an opening 2a formed at the lower end. A filter main body 3 is accommodated in the casing 2, and the filter main body 3 is fixed to filter fixing brackets 5 and 6 fixed in the casing 2 through fixing bolts 4.

  A plurality of suspension bolts 7 are fastened to the upper surface plate 2 b of the casing 2 via nuts 8, and the upper ends of the suspension bolts 7 penetrate through an uneven deck plate 10 attached to the lower surface of the concrete slab 9. The threaded portion of the suspension jig 11 embedded in the concrete slab 9 is screwed.

  The lower part of the casing 2 of the filter unit 1 protrudes downward from the opening 12 a of the ceiling panel 12, and the flange 2 c formed at the lower end of the casing 2 is positioned directly below the ceiling panel 12 so as to be parallel to the ceiling panel 12. ing. Protrusions 2d for positioning and sealing are formed on the outer periphery of the flange 2c.

  A decorative plate 13 positioned at the lower part of the ceiling panel 12 is disposed at the lower part of the casing 2 so as to cover the opening 2a and the flange 2c of the casing 2 from below. The decorative plate 13 has a thin rectangular dish shape, and a large amount of air is applied to the inclined portion 13b extending upward from the bottom portion 13a protruding downward on the center side toward the flange 13c on the outer peripheral side parallel to the flange 2c. A blowout hole 13d is formed. Also, edge plates 13e are formed on the outer peripheral edge of the flange 13c of the decorative plate 13 so as to be bent at a substantially right angle and directed upward, and round hole bolt holes are formed at the four corners of the flange 13c. 13f is drilled.

  A bolt hole 13f provided in the flange 13c of the decorative plate 13 is inserted with a bolt 14 from below, and the upper end of the bolt 14 is screwed into a nut 15 fixed to the lower surface of the flange 2c of the casing 2 of the filter unit 1. is doing. Thus, the decorative plate 13 is attached to the lower portion of the casing 2 so as to cover the lower end of the filter unit 1. Instead of providing the nut 15 on the lower surface of the flange 2c, a jig in which a female screw is screwed to the flange 2c may be fixed.

  3 to 6, 16 is a duct connected to a short duct 2 e formed on the upper side of the casing 2, 17 is a main duct connected to the duct 16, and 18 is a joint between adjacent ceiling panels 12. A joint 19 is a caulking provided so as to cover the nut 8 screwed to the lower end of the suspension bolt 7.

  Another example of the arrangement in the vicinity of the air outlet for blowing out air is shown in FIG. Thus, in the illustrated example, the duct 16 is substantially the same as the arrangement shown in FIG. 3 except that the duct 16 is connected to the short duct 2e of the casing 2 in the filter unit 1 via the flexible duct 20, The same parts as those in FIG. 3 are denoted by the same reference numerals. The decorative plate 13 is provided with a number of air blowing holes 13d (see FIGS. 4 and 6) and bolt holes 13f.

There exists patent document 1 as a prior art document which has arrange | positioned the decorative board to the air blower outlet.
JP 2004-251533 A

  3 to 7, the decorative plate 13 is fixed to the lower surface of the flange 2c in the casing 2 by inserting the bolts 14 into the round hole-shaped bolt holes 13f formed in the flange 13c. The bolts 14 are screwed into the nuts 15 so as to be attached to the lower portion of the casing 2.

  However, since the filter unit 1 is suspended and fixed from the suspension jig 11 embedded in the concrete slab 9 by the suspension bolt 7, the displacement of the embedded position of the suspension jig 11 relative to the concrete slab 9 and the suspension bolt 7 The filter unit 1 may be twisted in the plane direction due to the distortion of the filter unit 1, the pushing / pulling force from the duct 16 connected to the casing 2 of the filter unit 1, and if the filter unit 1 is twisted, the decorative plate 13 is similarly flat. Will twist in the direction.

  When this twist occurs, the air outlet portion has no performance problem, but the outer edge side 13e ′ of the edge plate portion 13e in the decorative plate 13 is parallel to the joint 18 of the ceiling panel 12 as shown in FIG. It will not look good.

  For this reason, when the filter unit 1 is twisted in the plane direction, it is necessary to correct the twist of the filter unit 1 in order to improve the appearance. However, the direction of the filter unit 1 is bent at the back of the ceiling and the suspension bolt 7 is bent. Since it is necessary to forcibly change by pushing or pulling the duct 16, the work is difficult to perform, and if there are many parts to be corrected, the work becomes more difficult, and the twist of the filter unit 1 itself is not corrected. Even if only the twist of the decorative plate 13 is to be corrected, since the gap between the bolt 14 for attaching the decorative plate 13 and the bolt hole 13f provided in the flange 13c of the decorative plate 13 is small, the twist of only the decorative plate 13 is corrected. It is difficult to do.

  As shown in FIG. 7, when the duct 16 is connected to the casing 2 of the filter unit 1 forming the air outlet portion via the flexible duct 20, the twist of the filter unit 1 due to the pushing and pulling force from the duct 16 is eliminated. In addition, the displacement of the embedding position of the suspension jig 11 with respect to the concrete slab 9 and the distortion of the filter unit 1 due to the distortion of the suspension bolt 7 cannot be prevented, and therefore the twist of the decorative plate 13 cannot be prevented. There is a problem similar to the above-mentioned in the correction of the twist of.

  In the case of Patent Document 1, since the mounting hole provided in the decorative plate is a long hole, the decorative plate can be adjusted in the longitudinal direction of the long hole, but cannot respond to twisting.

  In view of the above-described circumstances, the present invention is based on the filter unit and the makeup by the displacement of the embedment position of the suspension jig with respect to the ceiling concrete, the distortion of the suspension bolt, the pushing and pulling force from the duct connected to the casing of the filter unit, and the like. An object of the present invention is to provide an air outlet structure for a clean room or the like that can easily and quickly correct the twist of the decorative plate even when the plate is twisted in the plane direction, and has an improved appearance. Is.

  The air outlet part structure according to claim 1 of the present invention covers the lower end opening of the filter unit on the part protruding downward from the ceiling panel of the filter unit that is suspended by the suspension bolt and connected to the duct. An air outlet structure in which a decorative plate having a plurality of air blowing holes is mounted, wherein the decorative plate extends in the circumferential direction on the same circumference or / and concentrically in a plan view. And a bolt inserted through the long hole is screwed into a female screw portion provided in the casing of the filter unit so that the decorative plate is attached to the lower portion of the filter unit. Has been.

  In the air outlet structure according to claim 2 of the present invention, the filter unit is a HEPA filter or a ULPA filter.

  According to the air outlet structure according to the first and second aspects of the present invention, even if the filter unit is twisted, it is only necessary to correct the position of the decorative plate in the plane direction, so that the correction work can be performed easily and quickly. It can be performed, and an excellent effect that the appearance of the air outlet port is improved can be achieved.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 and 2 show an example of an embodiment for carrying out the present invention, and the structure of the air outlet is the same as that shown in FIGS. 3 and 7 except for the decorative board 13. In the figure, the same components as those shown in FIGS. 4 and 6 are denoted by the same reference numerals.
Thus, in the illustrated example, the flange 13c of the decorative plate 13 is a long hole bolt extending in the circumferential direction so as to be positioned on the same circumference C with respect to the center portion O of the bottom portion 13a. When the decorative plate 13 is attached to the lower surface of the filter unit 1, the bolt 14 is inserted through the elongated hole 21 and screwed into the nut 15 shown in FIGS. 3 and 4. Is done.

  Therefore, if the filter unit 1 and the decorative plate 13 are twisted as shown in FIG. 6 and the outer edge side 13e ′ of the edge plate portion 13e is not parallel to the joint 18 as a result of the mounting, the bolt 14 is attached. Loosen and rotate the decorative plate 13 in the longitudinal direction of the bolt hole 21 with the center O as a reference to adjust the position, and the position of the decorative plate 13 so that the outer edge side 13e 'of the outer edge side 13e is parallel to the joint 18. Make corrections. When the decorative plate 13 is in a predetermined state, the bolt 14 is tightened. Thereby, even if it does not correct the twist of the filter unit 1, only the decorative board 13 is corrected to improve the appearance of the air outlet.

  According to the illustrated example, even if the filter unit 1 is twisted, only the position of the decorative plate 13 needs to be corrected, so that the correction work can be performed easily and quickly, and the appearance of the air outlet port is good. It becomes.

  In the air outlet structure of the present invention, the case where the filter unit is suspended from the concrete slab has been described. However, the filter unit can be suspended from a structure such as a steel frame, and a long bolt hole provided in the decorative plate is provided. Although the case where they are provided on the same circumference has been described, it can be implemented if they are provided on concentric circles, can be applied to air conditioning in various rooms as well as clean rooms, and the filter is limited to a HEPA filter. Of course, various filters such as an ULPA (ultra low penetration air) filter can be used, and various modifications can be made without departing from the scope of the present invention.

It is a bottom view which shows the shape which looked at the decorative board applied to the air blower outlet structure of this invention from the bottom. It is the II section enlarged view of FIG. It is a longitudinal cross-sectional view of an example of the filter unit vicinity for demonstrating a general air blower outlet part structure. It is an IV-IV direction arrow line view of FIG. It is the V section enlarged view of FIG. It is a bottom view which shows the state which the decorative board shown in FIG. 3 twisted to the plane direction. It is a longitudinal cross-sectional view of the other example of the filter unit vicinity for demonstrating a general air blower outlet structure.

Explanation of symbols

1 Filter unit 2 Casing 2a Opening (lower end opening)
7 Suspension bolt 12 Ceiling panel 13 Decorative plate 13d Air outlet 15 Nut (Female thread)
16 Duct 21 Slotted bolt hole C Same circumference

Claims (2)

  A decorative plate having a plurality of air outlet holes formed on the lower end of the filter unit so as to cover the lower end opening of the filter unit is attached to a portion of the filter unit that is suspended by the suspension bolt and that projects downward from the ceiling panel of the filter unit. The decorative plate is provided with a plurality of elongated hole bolt holes extending in the circumferential direction on the same circumference or / and concentric circles in a plan view. Bolts inserted into the bolt holes are screwed into female thread portions provided in the casing of the filter unit, so that the decorative plate is configured to be attached to the lower portion of the filter unit. Outlet structure.   The air outlet structure according to claim 1, wherein the filter unit is a HEPA filter or a ULPA filter.

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