Sealing method and opening / closing unit

Abstract

To provide: a sealing method capable of achieving adequacy and facilitation of workability of sealing of a leakage air flow passage generated at an attachment part of a smoke exhaustion port in smoke exhaustion duct system design; and a smoke exhaustion port effective in achieving an object of the sealing method.SOLUTION: Outside a duct neck 161 is formed and prepared a connection part 203 of a smoke exhaustion port 200 by previously adding a sealing member 1 to be interposed between the connection part and the outside 161B of the duct neck 161 to the inside 203A of the connection part 203 of the smoke exhaustion port 200. In the case of attaching, to the duct neck 161, the smoke exhaustion port 200 to which the sealing member 1 is added, the connection part 203 of the smoke exhaustion port 200 is fitted to the outside 161B of the duct neck 161 and attachment is performed while suspending and supporting attachment flanges 162, 201 of both of the duct neck and the smoke exhaustion port via a suspension bolt 202. Therefore, a leakage air flow passage is sealed with the sealing member 1.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a smoke exhaust duct in a smoke exhaust system for a building or other structure. Opening and closing unit A sealing method for the mounting portion of the Opening and closing unit It is related to. [Background technology]

[0002] In conventional buildings and other structures, the installation of a predetermined smoke exhaust system is required. For example, as shown in Japanese Patent Laid-Open No. 7-185025 (Patent Document 1), a smoke exhaust system is provided with a rigid duct 120, a plurality of branch smoke exhaust ducts 160 branched off from a branching section 180 on each floor, and vanes 220 for opening and closing the flow path. Opening and closing unit 200, and an airtight damper 240 is provided at the branching portion of the rigid duct 120 and the branch smoke exhaust duct 160, etc., to open and close the inside of the duct airtightly by means of a blade 220, and the airtight damper 240 is Opening and closing unit The damper blades 260 are opened and closed in conjunction with the opening and closing of the blades 220 of the damper blades 200, thereby achieving the required smoke exhaust function (see Figures 3 and 4). Opening and closing unit The opening 200 is closed and the airtight damper blades 260 installed on each floor are also closed.

[0003] At this time, through the rigid duct 120 and the branched smoke exhaust duct 160 Opening and closing unit The smoke extractor 140 connected to 200 is stopped. Therefore, in the case where a disaster occurs on the 8th floor of the building 100 as shown in FIG. 4, the manual release device 400 is opened by a person in the room in conjunction with a smoke detector (not shown) that detects the generation of smoke and activates. Opening and closing unit The blades 220 of 200 are opened, Opening and closing unit By opening the smoke exhaust duct path between the branch smoke exhaust duct 160 linked to the exhaust duct 200, the desired smoke exhaust effect can be achieved.

[0004] And, in the smoke exhaust duct system Opening and closing unit When the exhaust pipe 200 is attached to the branch smoke exhaust duct 160, as shown in FIG. 5, the exhaust pipe 200 is attached to the attachment flange 162 attached to the duct neck 161 of the branch smoke exhaust duct 160. Opening and closing unit The mounting flange 201 of the mounting member 200 is attached while being suspended and supported by a suspension bolt 202. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 7-185025 Summary of the Invention [Problem to be solved by the invention]

[0006] The smoke exhaust duct system (Patent Document 1) aims to provide a smoke exhaust duct system that enables highly accurate duct system design in a smoke exhaust duct system, allows the selection of a smoke exhaust machine with an appropriate capacity, and reduces the cost of smoke exhaust equipment.

[0007] To achieve this purpose, the smoke exhaust system is provided with a rigid duct 120 connected to a smoke exhaust machine 140, a plurality of branch smoke exhaust ducts 160 connected to the rigid duct 120 and branched off via branching sections 180 for each of the 10th to 8th floors (3 in the figure), and blades 220 connected to the branch smoke exhaust ducts 160, communicating with the indoor space and the like, and opening and closing the flow path. Opening and closing unit 200, and is disposed at the branching portion 180 of the rigid duct 120 and the branched smoke exhaust duct 160 or at the branched smoke exhaust duct 160 closest to the branching portion 180. Opening and closing unit An airtight damper 110 is provided at an intermediate position between the attachment position of 200 and the branching portion 180, and uses a damper blade 260 to airtightly open and close the inside of the duct.

[0008] However, in this configuration, each opening / closing unit 200 has, as shown in FIG. Branch It is attached to the duct neck 161 of the smoke exhaust duct 160 by being suspended and supported by the hanging bolt 202 via the mounting flange 162 of the duct neck 161 and the mounting flange 201 of the connection part 203, and it is clear that an air leakage flow path is formed as shown by the dotted line R in the same figure.

[0009] Therefore, the connecting portion 203 which is the mounting portion of the opening / closing unit 200 and Branch The amount of air leakage between the duct necks 161 of the smoke exhaust duct 160 has a negative impact on the selection of a smoke exhaust fan with the appropriate capacity when designing the smoke exhaust duct system. Since the amount of air leakage increases depending on the number of opening and closing units 200, the overall design of the smoke exhaust duct system has problems such as making it difficult to select a smoke exhaust fan with the appropriate capacity.

[0010] As a method of sealing the amount of air leakage at the mounting portion of the opening / closing unit 200, as shown in FIG. 6, the duct neck 161 and the duct neck 162 are connected together during the suspension support work using the suspension bolts 202. Opening and closing unit 200 However, this sealing method is performed while the connection part 203 of the opening / closing unit 200 is being attached to the duct neck 161, which makes the work extremely difficult and makes it difficult to achieve an accurate seal, resulting in poor workability.

[0011] Therefore, the present invention relates to a smoke exhaust duct system or the like known in the above-mentioned Patent Document 1. Branch The purpose of this invention is to provide a sealing method for air leakage flow paths that occur at the attachment part of a smoke exhaust duct and an opening / closing unit, which can achieve sealing accuracy and ease of work, and an opening / closing unit that is effective in achieving the objectives of said sealing method. [Means for solving the problem]

[0012] In order to achieve the above object, the present invention provides a duct neck of a smoke exhaust duct. The connection part of the opening and closing unit is inserted, andMounting flange for connection but against the mounting flange of the duct neck Hanging bolt By connecting the opening and closing unit to the duct neck, Hanging support In the structure, the duct neck and the Connection Between Air leakage path For sealing Sealing material Set up A sealing method ,air A cloth sealing member made of a synthetic resin material with good airtightness and elasticity is folded in half to form a hollow section and an attachment piece. The steps to The attachment piece The aforementioned Connection outside Attach to The procedure includes: Features Rusi This is a method of

[0013] The invention of claim 2 is as follows: a connecting portion, For the duct neck of the smoke exhaust duct The above Mounting flange for connection but against the mounting flange of the duct neck Hanging bolt By connecting the duct neck with Hanging support will be An opening and closing unit, a sealing member for sealing an air leakage flow path between the duct neck and the connecting portion; The sealing member is made of a fabric sealing member made of a synthetic resin material having airtightness and elasticity, and is folded in half to form a hollow portion. but formation And At the same time, the adhesive piece but formation It was done, The attachment piece but ,before memorandum sequel outside Attached to It has been It is characterized by Ru opening It is a closed unit. [Effects of the Invention]

[0014] According to claim 1 of the present invention, Branch It is possible to construct a smoke exhaust duct system that can seal off air leakage paths that occur at the mounting portion of the opening / closing unit to the smoke exhaust duct and accurately control the airtightness of the entire smoke exhaust duct system.

[0015] Therefore, the cost required for designing the smoke exhaust duct system can be reduced.

[0016] Furthermore, the smoke exhaust outlet of claim 2 is sufficient to obtain the effect of claim 1, and can be installed quickly and easily without compromising not only the design of a new smoke exhaust duct system but also the installation workability of existing smoke exhaust ducts. Example 1

[0017] 1 and 2 show the sealing method of the present invention and the method used therein. Opening and closing unit This shows an example of the above.

[0018] Therefore, in the sealing method of FIG. Branch This is an explanatory diagram showing an embodiment in which an opening / closing unit 200 is attached to the duct neck 161 of the smoke exhaust duct 160. The same symbols are used for attachment methods similar to those in Figure 5, and specific explanations thereof will be omitted.

[0019] In the embodiment of FIG. 1, the duct neck 161 is provided with a Opening and closing unit By attaching a seal member 1 to be interposed between the inside 203A of the connection portion 203 of the duct neck 161 and the outside 161B of the duct neck 161 in advance, Opening and closing unit The connecting portion 203 of 200 is formed and prepared.

[0020] Therefore, the Opening and closing unit The seal member 1 is attached to the inner side 203A of the connection portion 203 of the 200. Opening and closing unit 200 is shown in FIG.

[0021] The sealing member 1 shown in FIG. 2 is made of a synthetic resin material having airtightness and elasticity. Cloth sealing material 1 The attachment piece 1B is attached to the wall surface of the connecting portion 203 while the hollow portion 1A is formed by folding the attachment piece 1B in half.

[0022] Therefore, the seal member 1 shown in Figure 2 was added. Opening and closing unitWhen the duct neck 161 is attached to the duct 200, Opening and closing unit The connecting portion 203 of 200 is inserted into the outer side 161B of the duct neck 161, and the mounting flanges 162 and 201 of both are fastened with a hanging bolt. 202 It is attached by hanging it through the support.

[0023] The inside 203A of the connection portion 203 of the opening / closing unit 200 and the duct neck 161 The seal member 1 is interposed between the outer surface 161B of the inner surface 161 and the outer surface 161B of the inner surface 161. The sealing member 1 is attached to both duct necks at the same time as the connecting portion 203 is attached. 161 Outer 161B, connection part 203 It will be mounted between the inner side 203A.

[0024] Therefore, it is clear that the air leakage flow path R shown in FIG.

[0025] In addition, in Figure 1, 2 is Opening and closing unit Showing 200 open panels, Opening and closing unit Although the amount of air leakage from the gap 3 between 200 and the opening panel 2 is small, the gap 3 can be easily sealed by the sealing members 4a and 4b.

[0026] In the illustrated embodiment, the seal member 1 Opening and closing unit The case where the connector 200 is attached to the inside 203A of the connector 203 has been described. Duct Neck 161 Inside Opening and closing unit It is of course possible to implement the structure in which the connecting portion 203 of the duct neck 161 is inserted and attached. In implementing the embodiment, the sealing member 1 is attached to the inside of the duct neck 161. Opening and closing unit This is a sealing method in which the sealing member is inserted between the outside of the connecting portion 203 of the 200. Opening and closing unit Instead of the embodiment in which the sealing member 1 is prepared by attaching it to the outside of the connection portion 203 of 200, it is possible to carry out the opposite embodiment by attaching the sealing member 1 to the inside of the duct neck 161 in advance.

[0027] As is clear from the above description, the sealing method of the present invention and the opening / closing unit used to implement the same can: Branch The present invention aims to provide an opening and closing unit that can accurately seal the air leakage flow path that occurs at the mounting part of the smoke exhaust duct due to its structure. In order to more specifically demonstrate this effect, the effect of the present invention is shown in the "Comparison Table of Smoke Exhaust Duct Neck Gap Leakage Prevention Measures Test Results" shown in Tables 1 to 4 below.

[0028] The smoke exhaust ducts in Tables 1 to 4 are of the "panel type 400 x 400 / main body internal dimensions 395 x 395" format, and Tables 1 and 3 show data for a duct size of "403W x 403H (duct internal dimensions), gap 8mm (4mm on each side)", while Tables 2 and 4 show data for "408W x 408H (duct internal dimensions), gap 13mm (6.5mm on each side)".

[0029] [Table 1]

[0030] [Table 2]

[0031] [Table 3]

[0032] [Table 4] [Brief explanation of the drawings]

[0033] [Figure 1] 1A to 1C are explanatory diagrams showing an embodiment of a sealing method of the present invention. [Figure 2] 1 is a perspective view showing an embodiment of an opening / closing unit used to implement a sealing method of the present invention; [Figure 3]FIG. 1 is an explanatory diagram of a smoke exhaust duct system shown in Patent Document 1. [Figure 4] FIG. 1 is an explanatory diagram of a smoke exhaust duct system shown in Patent Document 1. [Figure 5] 10 is an explanatory diagram showing a conventional method of attaching an opening / closing unit to a smoke exhaust duct. [Figure 6] 10 is an explanatory diagram showing a conventional method of attaching an opening / closing unit to a smoke exhaust duct. [Explanation of symbols]

[0034] 1. Sealing material 2 Opening and closing unit release panel 3 Gap 160 Branch Smoke exhaust duct 161 Duct Neck 161B Outside of duct neck 162,201 Mounting flange 200 Opening and Closing Unit 202 Hanging bolt 203 Connection R Leakage flow path

Claims

1. A sealing method for a structure in which a connection part of an opening / closing unit is inserted into a duct neck of a smoke exhaust duct, and an attachment flange of the connection part is connected to an attachment flange of the duct neck with a suspension bolt, thereby supporting the opening / closing unit by hanging it from the duct neck, comprising providing a sealing member for sealing an air leakage flow path between the duct neck and the connection part, a step of folding a cloth sealing member made of an airtight and elastic synthetic resin material in half to form a hollow portion and an attachment piece portion; attaching the attachment piece portion to the outside of the connection portion; A sealing method comprising:

2. An opening / closing unit comprising a connecting part, the connecting part being inserted into the duct neck of a smoke exhaust duct, and an attachment flange of the connecting part being connected to an attachment flange of the duct neck with a hanging bolt, thereby being suspended and supported by the duct neck, a sealing member for sealing an air leakage flow path between the duct neck and the connecting portion; The sealing member is The cloth sealing member is made of an airtight and elastic synthetic resin material and is folded in half to form a hollow portion and an attachment piece portion. An opening and closing unit characterized in that the attachment piece portion is attached to the outside of the connection portion.

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