JP4490531B2 - Fire damper for ventilation - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fire-proof damper provided in a ventilation passage of a building, and in particular, a non-flammable baffle is movably provided in the ventilation passage, and at a predetermined position of the non-flammable baffle in the event of a fire or the like. The present invention relates to a fireproof damper for ventilation constructed by integrally mounting a heating actuating member that can be actuated.
[0002]
[Prior art]
As this type of conventional fire prevention device, for example, a fire prevention device for a ventilation part (first known technique) provided in the eaves of a building shown in JP-A-7-119219, a fire-proof damper shown in JP-A-7-279554 A ventilator with a ventilator (second known technique) or an eaves ceiling ventilation structure (third known technique) disclosed in JP-A-11-159018 is known.
[0003]
Among many inventions developed and filed by the applicant of the present patent application, for example, a ceiling ventilation structure (fourth known technique) shown in Japanese Patent Laid-Open No. 6-73828, and an eaves shown in Japanese Patent Laid-Open No. 9-60184 A ceiling ventilation structure and its component fittings (fifth known technique), or a fire prevention ventilation structure (sixth known technique) disclosed in JP-A-9-105200 is known.
[0004]
[Problems to be solved by the invention]
However, in the first to third known technologies described above, the overall structure is complicated, and a thermal fuse, a special spring, etc. must be used. When the spring or the spring reaches a certain high temperature, it is difficult to operate uniformly, and thus there is a problem that defective products are generated.
[0005]
Further, in the technologies shown in the fourth to sixth known technologies developed by the above-mentioned patent applicant, a non-combustible thermal expansion material is attached to a predetermined position in the ventilation passage of the building, and in the event of a fire, etc. When the inside of the ventilation passage is heated to a certain temperature, the non-combustible thermal expansion material is thermally expanded, and the ventilation passage is easily and reliably closed, and flames and hot air intrude into the building, or from inside the building. It has the effect of being able to prevent being discharged to the outside.
[0006]
However, in the technology in which the above-mentioned conventional non-combustible thermal expansion material is provided in the ventilation passage, this non-combustible thermal expansion material is directly exposed to the flame and hot air at the time of fire. There was a concern that the blocking ability of the passage would drop slightly. In general, since the non-combustible thermal expansion material is disposed in the vicinity of the entrance of the ventilation passage, the thermal expansion performance may deteriorate due to direct contact with wind and rain.
[0007]
Furthermore, in order to reliably block the flame and hot air during a fire with the non-combustible thermal expansion material, it is necessary to keep the expansion density at the time of expansion of the non-combustible thermal expansion material constant. It had to be suppressed to about 10 mm. Therefore, there is a problem that it is difficult to completely close the ventilation passage by using the non-combustible thermal expansion material in the ventilation passage having a large cross-sectional area due to such a restriction.
[0008]
The fireproof damper for ventilation according to the present invention is a completely new technology developed in view of the above-described conventional problems, and in particular, a nonflammable baffle is movably disposed in a ventilation passage of a building, and the nonflammable A non-combustible thermal expansion material is installed at a predetermined position on the fire baffle, and when a flame or hot air enters the ventilation passage during a fire, the non-flammable thermal expansion material operates at a high temperature to move the non-flammable baffle Therefore, the present invention provides a completely new technology for a fireproof damper that is configured to block the ventilation passage.
[0009]
[Means for Solving the Problems]
The fireproof damper for ventilation according to the present invention is an invention that has fundamentally improved the above-mentioned conventional problems, and the gist of the first invention is that a nonflammable baffle is disposed in a ventilation passage of a building. In the fireproof damper configured, the nonflammable baffle plate is movably provided, and a nonflammable thermal expansion material is integrally attached to a predetermined position of the nonflammable baffle plate , It is a fireproof damper for ventilation characterized by moving the nonflammable baffle plate by thermal expansion and closing the ventilation passage .
[0010]
In the above-described first invention, in the fireproof damper configured by disposing the non-combustible baffle in the ventilation passage, the non-combustible baffle is provided movably, and non-combustible at a predetermined position of the non-combustible baffle. since the thermal expansion material is constituted integrally attached to, when the ventilation passage fire occurs and reaches a certain high temperature, the incombustible thermal expansion material thermal expansion to incombustible baffles By moving it in a predetermined direction, the ventilation passage is blocked by the non-combustible baffle, and it is possible to prevent flames and hot air from entering the ventilation passage.
[0011]
The gist of the second invention of the fireproof damper for ventilation according to the present invention is characterized in that the nonflammable thermal expansion material integrally attached to the nonflammable baffle plate is fixed at a predetermined position in the ventilation passage. It is a fireproof damper for ventilation of the 1st invention.
[0012]
In the second invention described above, the incombustible thermal expansion material integrally attached to the incombustible baffle plate movably arranged in the ventilation passage is fixed at a predetermined position in the ventilation passage. Therefore, the incombustible baffle plate can be fixed to the inner wall surface of the ventilation passage in a stable state via the incombustible thermal expansion material. Therefore, the movement of the nonflammable baffle can be stabilized.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the fireproof damper for ventilation according to the present invention will be described in detail with reference to the drawings. FIGS. 1A and 1B are attached to the front end side of the eaves ceiling of the fireproof damper according to the first embodiment of the present invention. 2 (a) and 2 (b) are cross-sectional views of the state in which the fireproof damper of FIG. 1 is attached to the base of the eaves ceiling, and FIG. 3 is a normal view in which the fireproof damper of FIG. FIG. 4 is a sectional view showing a state in which the fire damper shown in FIG. 3 operates.
[0014]
5 (a) and 5 (b) are cross-sectional views or perspective explanatory views of the second embodiment of the present invention in which the fireproof damper is provided on the base, and FIG. 6 is a cross-sectional view illustrating the fireproof damper of FIG. 7 is a cross-sectional view showing a state in which the fire damper shown in FIG. 5 is provided in the roof, FIG. 8 is a cross-sectional view showing a state where the fire damper shown in FIG. 5 is provided at a plurality of locations in the vertical ventilation passage, and FIG. , (B) is a cross-sectional enlarged view of a state in which a part of the fire damper shown in FIG. 8 operates.
[0015]
[Example 1]
1 (a) and 1 (b) show an embodiment in which an A-type fire damper of the fire damper of the present invention is attached to the front end side of the eaves ceiling, where 1 is the roof of the eaves and 2 is attached to the eaves. The nasal concealment plate 3 is a nonflammable eaves ceiling plate, and a ventilation opening 4 having a predetermined width is provided between the front end of the eaves ceiling plate 3 and the nasal concealment plate 2.
[0016]
An A-type fireproof damper 5 is fitted in the ventilation port 4. The A-type fire damper 5 is fixedly attached to a bracket 7 suspended from a base plate 6 disposed on the back side of the nose cover plate 2 via bolts 8.
[0017]
As shown in FIG. 1A, the A-type fire damper 5 has an outer cylindrical case 10 having a vent 9 in the lower part and a nonflammable baffle plate 11 placed on the inner bottom surface of the outer cylindrical case 10. And the nonflammable thermal expansion material 12 interposed between the baffle plate 11 and the inner bottom surface of the outer cylinder case 10.
[0018]
A vent hole 13 is formed in the upper surface of the outer cylinder case 10 of the A-type fire-proof damper 5, and a ventilation passage S extending to the vent hole 13 and the vent hole 9 is provided in the outer cylinder case 10. ing. Further, a clamping part 10 a having a predetermined groove shape capable of clamping an end part of the eaves ceiling plate 3 is provided on the right side part of the outer cylinder case 10.
[0019]
Since the A-type fire damper 5 has the above-described structure, when a fire occurs and the inside of the ventilation passage S reaches a certain high temperature, the non-combustible thermal expansion material 12 is heated and expands. As a result, the baffle plate 11 is pushed up, the vent hole 13 provided in the outer cylinder case 10 is closed by the baffle plate 11, and flames and hot air can be prevented from entering the ventilation passage S.
[0020]
In the above-described embodiment, the A-type fireproof damper 5 is mounted along the front end side of the eaves ceiling, that is, along the nose cover plate 2, but the A-type fireproof damper 5 is constructed as shown in FIGS. ), It is also possible to configure by attaching along the base part side of the eaves ceiling, that is, along the outer wall 14. In the case of FIGS. 2 (a) and 2 (b), the structural operation and effect are substantially the same as those of the fireproof damper 5 having the structure shown in FIGS. 1 (a) and 1 (b). To do.
[0021]
However, in the case of FIG. 2, a suspension piece 11 a formed by bending one side of the baffle plate 11 into a key shape is integrally provided on the baffle plate 11, and the suspension piece 11 a enters from the indoor side. It is comprised so that the nonflammable thermal expansion material 12 can be protected from the flame which carries out.
[0022]
[Example 2]
FIG. 3 shows a structure in which the B-type fire damper 17 of the second embodiment is configured on the back side of the ventilation port 16 provided on both sides of the ridge 15 of the roof 1.
[0023]
In the case of this embodiment, a lightning board 17a formed by being bent stepwise at a predetermined interval is disposed on the back side of the ventilation port 16, and this lightning board 17a is connected to the ridge through screws and bolts 18. It is fixed to the base plate 19 together with the portion 15. A ventilation passage S is formed between the Inazuma plate 17a and the ridge 15 respectively.
[0024]
A pair of incombustible thermal expansion materials 20 are fixed to the inazuma plate 17a facing the ventilation passage S at a predetermined interval, and the top surfaces of the pair of incombustible thermal expansion materials 20 are A nonflammable baffle plate 22 having a predetermined width is attached, which can close the vent hole 21 provided in the ventilation port 16 of the ridge 15. In the above-described embodiment, a plurality of baffle plates 22 are provided corresponding to the plurality of vent holes 21, but when a wide baffle plate 22 is used, one baffle (not shown) is provided. It is also possible to configure with only the plate 22.
[0025]
Since the B-type fire damper 17 of the second embodiment has the structure as described above, when a fire occurs and the non-combustible thermal expansion material 20 in the B-type fire damper 17 reaches a certain high temperature, As shown in FIG. 4, push the baffle 22 the incombustible thermal expansion material 20 expands to close the vent hole 21 of the ventilation opening 16 of the ridge 15 in the baffle plate 22, whereby the ventilation passage path S Can prevent the intrusion of flames and hot air.
[0026]
[Example 3]
An embodiment in which a C-type fire damper is attached to the ventilation passage of the foundation will be described with reference to FIGS.
[0027]
In the figure, reference numeral 23 denotes a foundation, and a base 24 is placed on the foundation 23. An outer wall 14 is provided outside the base 24 with a predetermined gap, and a space 25 is formed between a lower portion of the outer wall 14 and the foundation 23 and the base 24. A non-combustible base material 26 is vertically disposed along the outer standing surface of the base 24, and a vertical ventilation passage 27 is formed between the non-combustible base material 26 and the outer wall 14. A plurality of foundation packings 28 are interposed between the foundation 23 and the base 24, and a horizontal ventilation passage 29 is formed between them.
[0028]
Reference numeral 30 denotes a C-type fire damper, which is accommodated in the space 25 of the foundation. The C-type fire damper 30 has a vertical mounting portion 32 fixed to the base 24 via a screw 31 or the like at the upper portion, and the lower portion is separated into a multi-functional drainer 33 and a foundation press 34 in a bifurcated shape. Yes. The multi-function drainer 33 projects outward from the lower end of the outer wall 14, and the foundation retainer 34 is placed on the foundation 23, and the ventilation passage S is provided between the multifunction drainer 33 and the foundation retainer 34. [0029]
Further, the lower end of the foundation press 34 is bent in a substantially U shape, and a recess 35 is formed inside thereof. As shown in FIG. 5B, the multi-function drainer 33 and the foundation presser 34 are provided with vent holes 36 juxtaposed in the lateral direction. Therefore, the air that has passed through the ventilation passage S described above is configured to be able to flow into the ventilation passage 27 and the ventilation passage 29 through the vent holes 36.
[0030]
Reference numeral 37 denotes a nonflammable baffle plate, the tip of which is movably inserted into the ventilation passage S and the lower end of which is inserted into the recess 35. Further, a nonflammable thermal expansion material 38 is interposed between the lower end portion of the baffle plate 37 and the foundation presser 34. The lower end portion of the baffle plate 37 can be attached and fixed to the foundation press 34 via a nonflammable thermal expansion material 38.
[0031]
In the above-described third embodiment, when a fire occurs and the temperature around the noncombustible thermal expansion material 38 reaches a certain high temperature, the noncombustible thermal expansion material 38 is It is heated and expanded, whereby the front end of the baffle plate 37 is moved downward in the ventilation passage S, the ventilation passage S is blocked by the baffle plate 37, and a flame or hot air enters the ventilation passage S. It can be prevented.
[0032]
As described above, the C-type fire damper 30 provided in the ventilation passage of the foundation can be applied to the ventilation passage 40 provided in the lower house 39 as shown in FIG. In the case of this embodiment, it is not necessary to provide the vent hole 36 in the basic presser 34 of the C-type fire damper 30.
[0033]
Further, as shown in FIGS. 8 and 9 (a) and 9 (b), the upper and middle stages in the vertical ventilation passage 27 formed between the outer wall 14 of the entire building and the noncombustible base material on the back side thereof. It is also possible to attach and configure a C-type fireproof damper 30a made by improving the C-type fireproof damper 30 at a desired position such as the lower part or the lower end. The improved C-type fire damper 30a also has the same basic structure, operation and effect as the C-type fire damper 30 and will not be described in detail.
[0034]
As the non-combustible thermal expansion material in the above-mentioned embodiment, for example, “Inzmex” manufactured by Austrian Chemie Linz, products or techniques shown in Japanese Patent Publication No. 63-132968 or Japanese Patent Publication No. 3-235 are used. I can do it. As the non-retardant baffles, metal plate or incombustible resin plate or the like can be used.
[0035]
【The invention's effect】
A fireproof damper for ventilation according to the present invention is a fireproof damper configured by disposing a noncombustible baffle in a ventilation passage, and the incombustible baffle is provided movably and a predetermined position of the nonflammable baffle Since a non-flammable thermal expansion material is integrally attached to the above, when a fire occurs and the inside of the ventilation passage reaches a certain high temperature, the non-flammable thermal expansion material is thermally expanded and becomes non-flammable. The baffle plate is moved in a predetermined direction, whereby the ventilation passage is blocked by the non-combustible baffle plate, and it is possible to prevent a flame or hot air from entering the ventilation passage.
[0036]
The In fire damper of the invention described above, using a nonflammable baffle, ventilation portions of the fire to move the baffle plate due to thermal expansion of the non-combustible thermal expansion upon occurrence building, namely Since the ventilation port, the ventilation passage, and the like are closed to prevent intrusion of flame, hot air, and the like into the ventilation portion, the operation is easy and the feature is that the closing or blocking of the passage is reliable. Further, as compared with the case of closing the ventilation part only in the conventional incombustible thermal expansion material can efficiently good KuMinoru Hodokosuru with a little incombustible thermal expansion material.
[0037]
Further, in the ventilation fire dampers of the present invention, to secure the integrally mounted incombustible thermal expansion material to said incombustible baffle plate which is movably disposed in the ventilation passage in a predetermined position of the ventilation passage When configured, the incombustible baffle plate can be fixed to the inner wall surface of the ventilation passage in a stable state via the incombustible thermal expansion material. Therefore, it has the characteristic which can stabilize the movement of a nonflammable baffle.
[Brief description of the drawings]
[1] (a), (b) are sectional views taken along a state where a fire damper of a first embodiment according to the present invention mounted on the distal end side of the eaves ceiling.
[2] (a), (b) are sectional views taken along state attached to the original part of the eaves roof fire damper of FIG.
FIG. 3 is a cross-sectional view of a normal state in which the fireproof damper of FIG. 1 is provided in the ridge.
4 is a cross-sectional view showing a state where the fire damper shown in FIG. 3 operates.
[5] (a), (b) is a cross-sectional or perspective views of normal provided on the base portion of the fire damper of the second embodiment of the present invention.
6 is a cross-sectional view showing a state where the fire damper shown in FIG. 5 is activated.
7 is a cross-sectional view showing a state in which the fire damper shown in FIG.
8 is a cross-sectional view showing a state in which the fire dampers shown in FIG. 5 are provided at a plurality of locations in a vertical ventilation passage.
9 (a), (b) is an enlarged sectional view of a state in which a part of the fire damper is operated in Fig.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Roof 2 ... Nose concealment board 3 ... Eaves ceiling board 4 ... Ventilation opening 5 ... A-type fireproof damper 6 ... Base plate 7 ... Bracket 8 ... Bolt 9 ... Vent 10 ... Outer cylinder case 10a ... Clamping part 11 ... Baffle plate 11a ... Hanging piece 12 ... Non-combustible thermal expansion material 13 ... Vent hole 14 ... Outer wall 15 ... Building part 16 ... Ventilation port 17 ... B-type fireproof damper 17a ... Inazuma plate 18 ... Bis, bolt 19 ... Field plate 20 ... Non-combustible Thermal expansion material 21 ... vent hole 22 ... baffle plate 23 ... foundation 24 ... base 25 ... space 26 ... noncombustible base material 27 ... ventilation passage 28 ... foundation packing 29 ... ventilation passage 30 ... C type fireproof damper 30a ... C type fireproof damper 31 ... Screw, bolt 32 ... Vertical mounting portion 33 ... Multi-function drainer 34 ... Base retainer 35 ... Recess 36 ... Vent hole 37 ... Baffle plate 38 ... Noncombustible thermal expansion material 39 ... Lower house 40 ... Ventilation passage S ... Ventilation passage

Claims (2)

In a fireproof damper configured by disposing a nonflammable baffle in a ventilation passage of a building, the nonflammable baffle is provided movably, and a nonflammable thermal expansion material is provided at a predetermined position of the nonflammable baffle. A ventilation fireproof damper which is configured to be integrally attached and moves the nonflammable baffle plate by thermal expansion of the nonflammable thermal expansion material to close the ventilation passage . The ventilating fire damper according to claim 1, non-flammable baffle the incombustible thermal expansion material attached integrally to and characterized by being configured to fix a predetermined position of the ventilation passage.

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