JPH09159257A - Ventilating structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simplified ventilating structure wherein a fire prevention action is ensured at low cost. SOLUTION: A ventilating passage 20 is provided to communicate the inside and outside of a building, and an outdoor side opening 21 of the ventilating passage 20 is formed in an outer wall 15 of the building, and further a ventilating cap 30 is mounted over the outdoor opening 21 which includes a louver 51 on which high temperature foaming coating material 43 is applied. Hereby, upon the spread of a fire from the next building, the heated high temperature foaming coating material 43 is formed to lose a ventilating hole 42 and hence interrupt the ventilating passage 20 for fire preventing action, so that a fire prevention damper can be omitted, and a structure located in the vicinity of the outdoor opening 21 is simplified, and further the manufacturing cost is reduced for ease of the fire preventing action.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation structure for a building having a ventilation passage that connects the inside and the outside of the building.

[0002]

[Background Art] Usually, in a building, in order to forcibly discharge steam, heat, smoke, gas, etc. generated in a bathroom, kitchen, etc. to the outside together with air, a duct that communicates with the inside of the kitchen etc. and the outside of the building Etc., a ventilation passage is provided, and a ventilation fan is installed near the indoor opening of the ventilation passage. By using these ventilation passages and ventilation fans, it is possible to take in water vapor and the like in the kitchen together with the air and discharge it to the outside through the ventilation passages.

Usually, the outdoor side opening of such a ventilation passage is formed in the outer wall of a building, and a erring or the like is installed in the outdoor side opening to prevent the entry of foreign matter, rain, and the like. Also, near the outdoor side opening of the ventilation passage, for example,
A fire protection damper is installed that automatically closes the ventilation passage with a spring when the thermal fuse blows due to heat such as fire.

[0004]

However, since this damper is provided in the vicinity of the outdoor side opening of the ventilation passage together with gutters and the like, there is a problem that the structure in the vicinity of the outdoor side opening becomes complicated. Also, the damper is relatively expensive and
Since it has to be attached to each outdoor side opening of the ventilation passage, there is a problem that the cost is high and the installation is troublesome.

An object of the present invention is to provide a ventilation structure for a building having a simple structure which can easily provide fire protection at low cost.

[0006]

Referring to the drawings, a ventilation structure 40 of a building 10 according to the present invention has a ventilation passage 20 that communicates the inside and the outside of the building 10. The ventilation structure 40 of the building 10 has an outdoor side opening 21 formed in the outer wall 15 of the building 10, and a ventilation member 41 having a plurality of ventilation holes 42 provided in the vicinity of the outdoor side opening 21. , The ventilation member 41,
It is characterized in that a high-temperature foaming paint 43 that foams when heated and blocks the ventilation passage 20 is applied.

As a result, since the high-temperature foaming paint 43 is applied to the ventilation member 41, when the fire spreads from the neighbor's house, the flame heats the high-temperature foaming paint 43 and foams it. 43A closes the ventilation hole 42 and the ventilation passage 2
Since 0 is cut off, a reliable fireproofing effect can be obtained. As a result, it becomes possible to omit the above-mentioned damper for fire protection,
In addition to simplifying the structure near the outdoor-side opening 21, cost reduction can be achieved. Further, since it suffices to apply the high temperature foamable coating material 43 to the ventilation member 41, the work is facilitated as compared with the case where the damper is attached. Thereby, the above object is achieved.

The ventilation member 41 may be a slag 51, the high temperature foaming paint 43 may be applied to the slag 51, the ventilation member 41 is a mesh member 54, and the high temperature foaming paint 43 may be It may be applied to the mesh member 54.

According to this, the burrs 51 and the mesh members 54
Is conventionally used as the ventilation member 41 installed in the outdoor side opening 21 of the ventilation passage 20, so that the ventilation structure 40 can be easily and inexpensively used by using the existing gullet 51 and the mesh member 54. Can be formed.

Further, the ventilation member 41 is used for the building 10
Preferably, it is provided in a ventilation cap 30 which is attached to the outer wall 15 and communicates with the ventilation passage 20. By doing so, the ventilation member 41 is connected to the ventilation passage 2
Since the high temperature foamable paint 43 can be applied to the ventilation member 41 removed from the ventilation passage 20, the application work can be easily performed.

Further, the high temperature foamable coating material 43 may contain ammonium polyphosphate as a main component.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a unit-type building 10 including a building ventilation structure 40 of the present embodiment. The unit-type building 10 is constructed by combining a plurality of building units 11 including substantially rectangular parallelepiped building units 11A and 11B manufactured in advance in a factory.

The building unit 11A has a range 12 on the upper surface.
1 has a kitchen counter 12 and a range hood 13 installed above the kitchen counter 12,
The building unit 11B includes a bus unit 14.

Each of the building units 11A and 11B is provided with a ventilation passage 20 formed by a duct 20A which communicates the inside of the building unit 11A with the outside of the building 10. Building unit 11A
The indoor side opening (not shown) of the ventilation passage 20 is provided in the range hood 13, and the outdoor side opening 21 is formed in the outer wall 15 of the building unit 11A. An indoor side opening (not shown) of the ventilation passage 20 of the building unit 11B is provided on the ceiling surface of the bus unit 14, and an outdoor side opening 21 is formed on the outer wall 15 of the building unit 11B.

Ventilation passage 2 of building units 11A and 11B
A ventilation fan (not shown) is installed near each indoor opening of No. 0, and the air around the kitchen counter 12 or the air in the bath unit 14 is forcibly forced from each indoor opening to each ventilation passage 20. It can be taken in and discharged to the outside of the building 10 through the respective outdoor side openings 21.

As shown in FIGS. 2 and 3, the existing ventilation caps 30 are provided at the outdoor side openings 21 of each ventilation passage 20.
And the ventilation member 41 fitted in the ventilation cap 30.
The existing gullet 51 is provided. The ventilation cap 30 is a substantially circular frame-shaped member and has a step 31 on its peripheral surface, and the step 31 is locked to the end of the duct 20A and the surface of the outer wall 15 around the end. As a result, the ventilation cap 30 is attached to the outer wall 15 of the building 10, and the inside of the ventilation cap 30 and the ventilation passage 20 communicate with each other.

The gullet 51 is provided with a substantially circular frame-shaped portion 52 and a wing plate 53 having an inverted V-shaped cross section, and a plurality of wing plates 53 are mounted in parallel in the frame-shaped part 52 at predetermined intervals. A portion surrounded by the frame-shaped portion 52 and the wing plate 53 is a ventilation hole 42, and the ventilation passage 20 and the outside of the building 10 are communicated with each other through the plurality of ventilation holes 42.

On the surface of the burrs 51, the high temperature foamable paint 4
3 is applied. As shown in FIG. 4, the high-temperature foamable paint 43 is heated and foamed by the flame 44 when the fire spreads from the next house, and the foamed body 43A blocks the ventilation hole 42, thereby blocking the ventilation passage 20. It also serves to prevent fire. The high-temperature foaming paint 43 is specifically one containing ammonium polyphosphate as a main component, and for example, Pyrotect (trade name, manufactured by Denbach, Germany)
Can be used.

The unit type building 1 of this embodiment as described above
The 0 fire protection structure 40 is formed as follows. That is, the high temperature foaming paint 43 is applied to the surface of the burrs 51 in advance, and the burrs 51 are fitted into the ventilation cap 30. Then, after the duct 20A is installed, the ventilation cap 30 to which the rattle 51 is attached is attached to the outdoor side opening 21 formed in the outer wall 15.

According to this embodiment, the following effects can be obtained. That is, since the high temperature foamable coating material 43 is applied to the galleries 51, the flame 44 heats the high temperature foamable coating material 43 to foam when the fire spreads from the next house, and the foamed body 43A passes through. Since the pores 42 are closed to block the ventilation passage 20, a reliable fireproofing action can be obtained. For this reason, it becomes possible to omit a fire-proof damper that has conventionally been provided near the outdoor side opening 21, and the structure near the outdoor side opening 21 can be simplified, and an expensive damper is not required. Cost reduction can be achieved.

Further, since it is only necessary to apply the high temperature foamable coating material 43 to the slag 51, the work is easier than the mounting of the damper. Then, the existing slag 51 is used as the ventilation member 41, and the slag 51 is coated with the high-temperature foamable coating 4
Since No. 3 is applied, the spread of fire prevention effect can be obtained easily and at low cost using existing equipment.

Further, since the rattle 51 is provided in the ventilation cap 30 which is attached to the outer wall 15 of the building 10 and communicates with the ventilation passage 20, the rattle 51 is attached to and detached from the duct 20A (ventilation passage 20) together with the ventilation cap 30. Since the high temperature foamable paint 43 can be applied to the burrs 51 removed from the duct 20A, the application work can be performed easily. Furthermore, since the garage 51 is also detachable from the ventilation cap 30, the garage 51
By immersing the high temperature foamable coating material 43 in the high temperature foamable coating material 43, the high temperature foamable coating material 43 can be easily applied.

The present invention is not limited to the above-described embodiment, but includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention.
That is, in the above-described embodiment, the gullet 51 is used as the ventilation member 41. However, as shown in FIG. 5, the ventilation member 41 is an existing mesh member 54 having a plurality of ventilation holes 42, and the high temperature foaming paint 43 is used. It may be applied to the mesh member 54. Further, in the case where the rar 51 and the mesh member 54 are used in combination as the ventilation member 41, it is preferable that the high temperature foaming coating material 43 is applied to at least one of them.

Further, in the above-mentioned embodiment, the high temperature foaming paint 43 is applied to the entire surface of the rattle 51, but it may be applied to only one surface of the blade 53, and further, It may be applied only to the outdoor surface of the upper surface of the blade 53. The ventilation cap 30 and the ventilation member 41 may be integrally formed, and in this case, the ventilation cap 30 may also be coated with the high-temperature foaming paint 43.

Further, in the above-described embodiment, the rattle 51 is attached to the outer wall 15 together with the ventilation cap 30, but the ventilation member 41 may be located near the outdoor side opening 21, for example, rather than the outdoor side opening 21. Indoor side duct 2
It may be installed inside 0A or the like.

In the above-described embodiment, the ventilation passage 20 is provided so as to communicate the inside of the kitchen / bath unit 14 with the outside of the building 10, but other compartments such as toilets inside the building 10 and the building 10 are connected. It may be in communication with the outside.

[0027]

As described above, according to the present invention,
Since the high-temperature foaming paint is applied to the ventilation member, when the fire spreads from the next house, the flame heats the high-temperature foaming paint to foam it, blocking the ventilation hole and blocking the ventilation passage. Fire protection is obtained. For this reason, it becomes possible to omit the conventionally installed fire damper, which simplifies the structure in the vicinity of the outdoor side opening and also achieves cost reduction. Further, since it suffices to apply the high temperature foaming paint to the ventilation member, the work can be facilitated as compared with the mounting of the damper.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing one embodiment of the present invention.

FIG. 2 is a front view showing the ventilation member of the embodiment.

FIG. 3 is a sectional view showing a main part of the embodiment.

FIG. 4 is a cross-sectional view showing another state of the main part of the embodiment.

FIG. 5 is a front view showing a ventilation member according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Building 20 Ventilation passage 21 Outdoor side opening 15 Outer wall 42 Vent hole 41 Ventilation member 40 Ventilation structure 43 High temperature foaming paint 51 Garari 54 Mesh member 30 Ventilation cap

Claims (5)

[Claims] 1. A ventilation passage communicating between the inside and the outside of a building, the outdoor side opening of the ventilation passage being formed on the outer wall of the building, and a plurality of ventilation holes near the outdoor side opening. A ventilation structure for a building provided with a ventilation member having a structure, wherein the ventilation member is coated with a high-temperature foaming paint that foams when heated and blocks the ventilation passage. Ventilation structure. 2. The ventilation structure for a building according to claim 1, wherein the ventilation member is a rag, and the high-temperature foaming paint is applied to the rag. 3. The ventilation structure for a building according to claim 1, wherein the ventilation member is a mesh member, and the high-temperature foaming paint is applied to the mesh member. 4. The ventilation structure for a building according to claim 1, wherein the ventilation member is provided in a ventilation cap that is attached to an outer wall of the building and communicates with the ventilation passage. The ventilation structure of the building which is characterized by 5. The ventilation structure for a building according to any one of claims 1 to 4, wherein the high-temperature foaming paint is mainly composed of ammonium polyphosphate. Construction.