JP2001152600A - Fireproof damper for ventilation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fireproof damper fitted to a ventilating opening of a building which can easily and reliably close a ventilation passage by turning a baffle plate arranged in the ventilation passage. SOLUTION: The type A fireproof damper 5 is fitted in the ventilating opening 4 formed between a fascia board 2 of an eave soffit and an eave soffit plate 3. The type A fireproof damper 5 has a ventilating opening 9 in a lower portion and a ventilation hole 13 in an upper portion, and comprises an outer cylindrical case 10 having a ventilation passage S to be communicated with the ventilating opening 9 and the ventilation hole 13 and the baffle plate 11 placed on an inner bottom surface of the outer cylindrical case 10 with the non-combustible thermal expansion material 12 interposed between the baffle plate 11 and the outer cylindrical case 10, and when the non-combustible thermal expansion material 12 is heated and expanded, the baffle plate 11 closes the ventilation hole 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire damper provided in a ventilation passage of a building, and more particularly, to a non-combustible baffle provided movably in the ventilation passage. The present invention relates to a ventilation fireproof damper integrally formed with a heating operation member operable in a fire or the like at a predetermined position.

[0002]

2. Description of the Related Art As a conventional fire protection device of this type, for example, a fire prevention device for a ventilation portion provided in an eaves section of a building (first known technology) disclosed in Japanese Patent Application Laid-Open No. 7-119219,
There is known a ventilation device with a fireproof damper disclosed in Japanese Patent Application Laid-Open No. 279554 (second known technology), an eave ceiling ventilation structure disclosed in Japanese Patent Application Laid-Open No. 11-159018 (third known technology), and the like.

Further, among many inventions developed and filed by the present applicant, a ventilation structure for a ceiling (fourth known technology) disclosed in Japanese Patent Application Laid-Open No. Hei 6-73828,
No. 60184, Japanese Unexamined Patent Publication No. 9-105200
A fire prevention ventilation structure (sixth known technology) and the like disclosed in Japanese Patent Application Laid-Open Publication No. H10-209,055 are known.

[0004]

However, in the first to third prior arts described above, the overall structure is complicated and a thermal fuse, a special spring and the like must be used. When the temperature fuses and springs reach a certain high temperature, it is difficult to operate uniformly, and there is a problem that defective products are generated.

In the above-described fourth to sixth known technologies developed by the present applicant, a non-combustible thermal expansion material is attached to a predetermined position in a ventilation passage of a building to cause a fire. When the inside of the ventilation passage is heated to a certain temperature, for example, when the non-combustible thermal expansion material thermally expands, the ventilation passage is closed easily and securely, and flames or hot air enter the room, or It has the effect of being able to prevent discharge from inside the building to outside.

However, in the above-mentioned conventional technology in which a non-combustible thermal expansion material is provided in a ventilation passage, a part of the non-combustible thermal expansion material is damaged because it is directly subjected to a flame or hot air at the time of a fire. However, there was a concern that the ability to cut off the ventilation passage would slightly decrease. Further, since the non-combustible thermal expansion material is generally disposed near the entrance of the ventilation passage, there is a case where the material directly touches the wind and rain,
There was also a concern that the thermal expansion performance would deteriorate.

Further, in order to reliably shut off flame and hot air at the time of fire by the non-combustible thermal expansion material, it is necessary to keep the expansion density of the non-combustible thermal expansion material at the time of expansion constant. The height had to be suppressed to about 10 mm. Therefore, due to such a limitation, in a ventilation passage having a large cross-sectional area, there has been a problem that it is difficult to completely close the ventilation passage using a nonflammable thermal expansion material.

[0008] The ventilation fire damper according to the present invention is a completely new technology developed in view of the above-mentioned conventional problems. In particular, a non-combustible baffle is movably arranged in a ventilation passage of a building. And a heating operation member such as a non-combustible thermal expansion material is attached to a predetermined position of the non-combustible baffle plate, and when a flame or hot air enters the ventilation passage at the time of fire, the heating operation member operates at a high temperature and It is an object of the present invention to provide a completely new technology of a fire damper, which is configured to be able to move a non-combustible baffle to block a ventilation passage.

[0009]

SUMMARY OF THE INVENTION A ventilation fire damper according to the present invention is an invention which fundamentally solves the above-mentioned conventional problems, and the gist of the first invention is to provide a ventilation damper for a building. In a fire damper constructed by arranging a non-combustible baffle at a predetermined position, the non-combustible baffle is movably provided, and a non-combustible thermal expansion material, a shape memory alloy, a bimetal, etc. are provided at predetermined positions of the non-combustible baffle. A ventilation fireproof damper characterized in that the heating operation member is integrally mounted.

According to the first aspect of the present invention, in a fire damper having a non-combustible baffle disposed in a ventilation passage, the non-combustible baffle is movably provided and a predetermined position of the non-combustible baffle is provided. And a heating operation member such as a nonflammable thermal expansion material, a shape memory alloy, and a bimetal are integrally attached to the ventilation passage. The actuating member operates to move the non-combustible baffle plate in a predetermined direction, thereby blocking the ventilation passage with the non-combustible baffle plate and preventing flame or hot air from entering the ventilation passage.

The gist of the second invention of the ventilation fire damper of the present invention is characterized in that a heating operating member integrally attached to the non-combustible baffle plate is fixed at a predetermined position in a ventilation passage. It is a ventilation fireproof damper of the first invention.

In the second aspect of the present invention, the heating operation member integrally attached to the non-combustible baffle plate movably disposed in the ventilation passage is fixed at a predetermined position in the ventilation passage. Therefore, the non-combustible baffle plate can be fixed to the inner wall surface of the ventilation passage in a stable state via the heating operation member. Therefore, the movement of the non-combustible baffle can be stabilized.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing one embodiment of a ventilation fire damper according to the present invention.
FIGS. 2A and 2B are cross-sectional views showing a state in which a fire damper according to a first embodiment of the present invention is attached to a tip end side of an eaves ceiling.
(A), (b) is a cross-sectional view of the state in which the fire damper of FIG. 1 is attached to the base of the eaves ceiling, FIG. 3 is a normal cross-sectional view in which the fire damper of FIG. 1 is provided in a ridge, and FIG. FIG. 4 is a cross-sectional view illustrating a state in which the fire damper of FIG. 3 operates.

FIGS. 5 (a) and 5 (b) are cross-sectional or perspective views illustrating a state in which a fire damper according to a second embodiment of the present invention is provided on a base. FIG. 6 illustrates a state where the fire damper of FIG. 5 is operated. FIG. 7 is a cross-sectional view showing a state where the fire damper of FIG. 5 is provided in a shed portion, FIG. 8 is a cross-sectional view showing a state where the fire damper of FIG. (A),
FIG. 9B is an enlarged cross-sectional view showing a state where a part of the fire damper of FIG. 8 is operated.

[Embodiment 1] FIGS. 1A and 1B show an embodiment in which an A-type fireproof damper of the fireproof damper of the present invention is attached to the tip side of an eaves ceiling. Reference numeral 2 denotes a hood cover attached to the eaves, and reference numeral 3 denotes a non-combustible eaves ceiling plate. A ventilation opening 4 having a predetermined width is provided between the tip of the eaves ceiling plate 3 and the nose cover 2. Have been.

An A-type fire damper 5 is fitted in the ventilation opening 4. The A-type fireproof damper 5 is attached and fixed via bolts 8 to a bracket 7 suspended from a base plate 6 disposed on the back side of the nose cover 2.

The A-type fire damper 5 is particularly shown in FIG.
As is apparent from FIG. 1, an outer cylinder case 10 having a vent 9 at the lower part, a non-combustible baffle plate 11 placed on the inner bottom surface of the outer cylinder case 10, a baffle plate 11 and the outer cylinder case 10
And a non-combustible thermal expansion material 12 interposed between the inner surface and the inner bottom surface.

The outer case 10 of the A-type fire damper 5
A ventilation hole 13 is formed in the upper surface of the outer cylinder case 1.
Inside 0, a ventilation passage S which reaches the ventilation hole 13 and the ventilation hole 9 is provided. On the right side of the outer cylinder case 10, a holding portion 10a having a predetermined groove shape capable of holding the end of the eaves ceiling plate 3 is provided.

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 incombustible thermal expansion material 12 is heated. When the baffle plate 11 is expanded, the baffle plate 11 is pushed up, and the baffle plate 11 closes the ventilation hole 13 provided in the outer cylinder case 10, so that it is possible to prevent a flame or hot air from entering the ventilation passage S.

In the above-described embodiment, the A-type fire damper 5 is mounted on the tip side of the eaves ceiling, that is, along the nose cover 2, but the A-type fire damper 5 is shown in FIG. ,
As shown in FIG. 2B, it is also possible to mount the eaves ceiling along the base of the eaves ceiling, that is, along the outer wall 14. This figure 2
In the cases of (a) and (b), since the structural operation and the function and effect are almost the same as those of the fireproof damper having the structure shown in FIGS.

However, in the case of FIG. 2, a suspension piece 11a formed by bending one side of the baffle plate 11 into a key shape is provided integrally with the baffle plate 11, and this suspension piece 11a
Incombustible thermal expansion material 1 from flames entering from indoor side
2 can be protected.

[Embodiment 2] FIG. 3 shows a structure in which a B-type fire damper 17 of the second embodiment is provided behind a ventilation opening 16 provided on both sides of a ridge 15 of a roof 1.

In the case of this embodiment, an inazuma plate 17a formed by stepwise bending at a predetermined interval is arranged on the back side of the ventilation opening 16, and the inazuma plate 17a is connected via screws and bolts 18. Field board 1 with the ridge 15
9 and fixed. Ventilation passages S are formed between the progress plate 17a and the ridge portion 15, respectively.

A pair of nonflammable thermal expansion materials 20 are fixed to the progress plate 17a facing the ventilation passage S at a predetermined interval, and the top surfaces of the pair of nonflammable thermal expansion materials 20 are further fixed. Has a ventilation hole 21 provided in the ventilation opening 16 of the ridge portion 15.
A non-combustible baffle plate 22 of a predetermined width capable of closing the air conditioner is mounted. In the above-described embodiment, a plurality of baffle plates 22 are provided corresponding to the plurality of vent holes 21. However, when a wide baffle plate 22 is used, one baffle plate (not shown) is provided. It is also possible to configure only the plate 22.

Since the B-type fire damper 17 of the second embodiment has the above-described structure, when a fire occurs and the incombustible thermal expansion material 20 in the B-type fire damper 17 reaches a certain high temperature. As shown in FIG. 4, the non-combustible
0 expands and pushes up the baffle plate 22, and the baffle plate 22 closes the ventilation hole 21 of the ventilation port 16 of the ridge portion 15, thereby preventing a flame or hot air from entering the inside of the ventilation passage S.

Embodiment 3 FIGS. 5A, 5B and 6
A description will be given of an embodiment in which a C-type fire damper is attached to the ventilation passage of the foundation.

In the figure, reference numeral 23 denotes a foundation, on which a base 24 is mounted. An outer wall 14 is provided outside the base 24 with a predetermined gap therebetween, 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 raised 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. Further, 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 these.

Reference numeral 30 denotes a C-type fire damper, which is housed in the space 25 of the base. The C-type fire damper 30 has a vertical mounting part 32 fixed to the base 24 via a screw 31 or the like at the upper part, and the lower part thereof is bifurcated into a multifunctional drainer 33 and a base holder 34. I have. The multifunctional drainer 33 protrudes outwardly from the lower end of the outer wall 14 and the foundation holder 34 is placed on the foundation 23. A ventilation passage S is provided between the multifunctional drainer 33 and the foundation holder 34. Is formed

Further, the lower end of the base retainer 34 is bent substantially in a U-shape to form a concave portion 35 therein.
As shown in FIG. 5 (b), the multifunctional drainer 33 and the foundation holder 34 are provided with ventilation holes 36 arranged in parallel in the lateral direction. Therefore, the air that has passed through the above-described ventilation passage S is configured to be able to flow into these ventilation passages 27 and 29 through these ventilation holes 36.

Numeral 37 denotes a non-combustible baffle, 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 non-combustible thermal expansion material 38 is interposed between the lower end of the baffle plate 37 and the base retainer 34. The lower end of the baffle plate 37 can be attached and fixed to the base holder 34 via a non-combustible thermal expansion material 38.

In the third embodiment, when a fire occurs and the temperature around the incombustible thermal expansion material 38 reaches a certain high temperature, as shown in FIG. The material 38 heats and expands, thereby moving the distal end of the baffle plate 37 downward in the ventilation passage S, and the baffle plate 37
Can be shut off to prevent flames or hot air from entering the ventilation passage S.

As described above, C provided in the ventilation passage of the base portion
As shown in FIG. 7, the fire damper 30 can be applied to a ventilation passage 40 provided in a shed 39 as well.
In the case of this embodiment, it is not necessary to provide the ventilation holes 36 in the base retainer 34 of the C-type fire damper 30.

Further, as shown in FIGS. 8 and 9 (a) and 9 (b), the upper part of the vertical ventilation passage 27 formed between the outer wall 14 of the whole building and the non-combustible base material on the back side thereof. Department,
It is also possible to attach a C-type fire protection damper 30a made by modifying the C-type fire protection damper 30 to a desired position such as a middle portion or a lower end portion. The basic structure, operation, and effect of these improved C-type fire dampers 30a are substantially the same as those of the above-described C-type fire dampers 30, and a detailed description thereof will be omitted.

Examples of the non-combustible thermal expansion material in the above-mentioned embodiment include products such as "Inmex" manufactured by Austrian Chemie Linz Co., Ltd. and Japanese Patent Publication No. 63-132968 or 3-235. Technology can be used. In place of the incombustible thermal expansion material 38, for example, a bimetal or a shape memory alloy that can operate at 150 to 170 ° C. can be used. Furthermore,
As the non-combustible baffle, a metal plate or a non-combustible resin plate can be used.

[0035]

According to the present invention, there is provided a ventilation damper for ventilation in which a non-combustible baffle is disposed in a ventilation passage, wherein the non-combustible baffle is movably provided. Since a heating operation member such as a nonflammable thermal expansion material, a shape memory alloy, and a bimetal is integrally attached to a predetermined position of the baffle plate, when a fire occurs and the inside of the ventilation passage reaches a certain high temperature. In this case, the heating operation member operates to move the non-combustible baffle plate in a predetermined direction, thereby blocking the ventilation passage with the non-combustible baffle plate and preventing the flame or hot air from entering the ventilation passage. .

In the above-described fire damper of the present invention,
Use a non-combustible baffle plate and, in the event of a fire, operate this baffle plate with a heating member to close the ventilation part of the building, that is, the ventilation openings, ventilation passages, etc. Is prevented from invading, so that it is easy to operate and has a feature that it is surely closed or blocked. Furthermore, compared to the case where the ventilation part is closed only with the conventional non-combustible thermal expansion material, a small amount of the heating operation member is more efficient,
In addition, the heating operation can be performed without damaging the heating member itself with a flame or the like.

Further, in the ventilation fire damper of the present invention, the heating operation member integrally attached to the incombustible baffle plate movably disposed in the ventilation passage is fixed at a predetermined position in the ventilation passage. In such a case, the non-combustible baffle plate can be fixed to the inner wall surface of the ventilation passage in a stable state via the heating operation member. Therefore, it has the feature that the movement of the non-combustible baffle can be stabilized.

[Brief description of the drawings]

FIGS. 1 (a) and 1 (b) are cross-sectional views showing a state in which a fire damper according to a first embodiment of the present invention is attached to a front end side of an eave ceiling.

FIGS. 2 (a) and 2 (b) are cross-sectional views showing a state where the fire damper of FIG. 1 is attached to a base of an eave ceiling.

FIG. 3 is a cross-sectional view in a normal state in which the fireproof damper of FIG. 1 is provided in a ridge.

FIG. 4 is a sectional view showing a state in which the fire damper of FIG. 3 operates.

FIGS. 5 (a) and 5 (b) are cross-sectional or perspective explanatory views of a normal state in which a fire damper according to a second embodiment of the present invention is provided on a base portion.

FIG. 6 is a sectional view showing a state in which the fire damper of FIG. 5 is operated.

FIG. 7 is a cross-sectional view showing a state where the fireproof damper of FIG. 5 is provided in a shed.

FIG. 8 is a cross-sectional view of a state where the fire dampers of FIG. 5 are provided at a plurality of locations in a vertical ventilation passage.

9 (a) and 9 (b) are enlarged sectional views showing a state where a part of the fire damper of FIG. 8 is operated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Roof 2 ... Nose cover board 3 ... Eaves ceiling board 4 ... Ventilation opening 5 ... A type fireproof damper 6 ... Base plate 7 ... Bracket 8 ... Bolt 9 ... Vent opening 10 ... External cylinder case 10a ... Clamping part 11 ... Baffle plate 11a ... hanging pieces 12 ... incombustible thermal expansion material 13 ... vent holes 14 ... outer walls 15 ... ridges 16 ... ventilation holes 17 ... B-type fireproof dampers 17a ... inazuma boards 18 ... screws, bolts 19 ... field plates 20 ... noncombustible Thermal expansion material 21 ... vent hole 22 ... baffle plate 23 ... foundation 24 ... base 25 ... space 26 ... nonflammable base material 27 ... ventilation passage 28 ... foundation packing 29 ... ventilation passage 30 ... C type fire prevention damper 30a ... C type fire prevention damper DESCRIPTION OF SYMBOLS 31 ... Screw, bolt 32 ... Vertical mounting part 33 ... Multifunctional drainer 34 ... Foundation holder 35 ... Recess 36 ... Vent hole 37 ... Baffle plate 38 ... Incombustible thermal expansion material 39 ... Bottom 40 ... ventilation passage S ... ventilation passage

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tatsuji Kaneda 2-20-5 Shimotani, Taito-ku, Tokyo F-term (reference) 2E001 DB02 DE01 DE04 FA04 FA16 FA20 HB01 HD11 HF12 LA01 LA12

Claims (2)

[Claims] In a fire damper having a nonflammable baffle arranged in a ventilation passage of a building, the nonflammable baffle is movably provided, and a nonflammable baffle is provided at a predetermined position on the nonflammable baffle. A ventilating fire damper, which is constructed by integrally attaching a heating operation member such as a conductive thermal expansion material, a shape memory alloy, and a bimetal. 2. The ventilation fire damper according to claim 1, wherein a heating operation member integrally attached to said non-combustible baffle plate is fixed at a predetermined position in a ventilation passage.