JPH094158A - Fireproof damper for ventilation ridge - Google Patents

Abstract

PURPOSE: To provide a fireproof damper of simple structure with easy installation by furnishing a slidable lid plate energized by a spring inside a ventilation ridge on the roof, mounting a thermal fuse, and blocking the draft hole automatically in fire. CONSTITUTION: A base board 1 equipped with a draft hole 10a, overhang plates 13a, 13b, and the like is installed inside a ventilation ridge F, and a lid plate 2 energized by a spring 3 in the direction of the closing is mounted on the base board 1 in such a way as slidable along the supporting part. The lid plate 2 is held by a fuse 5 in the lifted condition. The overhang plates 13a, 13b on both sides are installed so as to suit the gradient of the roof, and drafting is made at normal times from the draft hole 10a, and in fire, the fuse 5 blows to block the hole 10a with the lid plate 2 so that flames are hindered from flying outdoors. Thus a fireproof damper of simple structure is established, which can easily be installed on any roof having different gradient.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended to prevent a fire during a fire from flowing out of the ventilation interval inside a ventilation building installed on the roof so as to freely cover the ventilation interval of the house. It is related to the fireproof damper for the ventilation building to be equipped.

[0002]

2. Description of the Related Art Generally, there are existing various things such as a fire-proof damper mounted on a wall surface together with a blower fan as a means for preventing a fire from flowing out at the time of a fire. In addition to this, even in a ventilation building installed on the rooftop for exchanging indoor and outdoor air (see, for example, Jikken 4-46424), there is a risk that the fire may flow out during a fire. It is desirable to equip it inside.

However, the fireproof damper should not interfere with the exchange of indoor and outdoor air. For this purpose, it is necessary to construct a structurally simple structure so that the indoor and outdoor air can easily flow, and it is easy to respond to different roof slopes depending on the construction site, such as the ridge of a house. Need to be configured.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fire protection damper for a ventilation ridge that is structurally simple, does not hinder air exchange, and can easily cope with differences in roof slope. To aim.

[0005]

According to the first aspect of the present invention, there is provided a fire protection damper for a ventilation wing, which is provided in a ventilation wing installed on a roof so as to freely cover a ventilation interval of a house. Is installed to prevent the air from flowing out of the ventilation interval to the outside, and the board part having the plate surface provided with the ventilation hole is arranged at the ventilation interval of the house and the ventilation hole of the substrate part is shielded. A lid plate portion that is located in a horizontal direction above and parallel to the substrate portion as possible as possible, a spring member that pulls and supports the lid plate portion in a direction that shields the vent holes of the substrate portion, and the lid plate portion is the spring. It is configured by including a leg portion that is lifted and supported above the substrate portion against the member, and a heat-meltable fuse that holds the lifted state of the lid plate portion by the leg portion between the substrate portion and the fuse portion. .

In the fire protection damper for a ventilation building according to the second aspect of the present invention, a supporting frame portion for slidably receiving and supporting the lid plate portion from both end sides is provided upright from the substrate portion.

In the fire protection damper for a ventilation building according to claim 3 of the present invention, the base plate has a bottom plate having ventilation holes on the plate surface, and side plates bent upward from opposite sides of the bottom plate. The side plate is formed of an overhanging plate bent laterally from the upper end side, and the side plate and the overhanging plate are formed so that the bending angles thereof can be adjusted.

In the fire protection damper for a ventilation building according to claim 4 of the present invention, the spring member has a support shaft projecting downward from the cover plate part below the plate part of the base plate part and a support shaft projecting below the base plate part of the support shaft part. And a coil spring that is compression-fitted on the axis line and elastically contacts the plate surface of the substrate portion.

In the fire protection damper for a ventilation wing according to claim 5 of the present invention, the leg portion has a projecting piece projecting downward from the plate surface of the lid plate part, and a board for slidably inserting and supporting the projecting piece. And a receiving frame provided in the section, and the plate surfaces of the perforated piece and the receiving frame which are in contact with each other are connected and fixed by a fuse capable of melting each other.

In the fire protection damper for a ventilation building according to claim 6 of the present invention, the support frame portion has a step portion for locking the cover plate portion at the lifting position by the leg portion, and the step portion is bent downward from the step portion. The cover plate portion is provided with a spring-deflectable latching claw that presses the cover plate portion at the lower end portion to the shielding state of the ventilation hole.

[0011]

In the fire protection damper for a ventilation building according to claim 1 of the present invention, since the cover plate portion is normally lifted and supported by the leg portion above the plate surface of the base plate portion having the ventilation hole, ventilation is performed. It is possible to maintain the indoor and outdoor air flowing inside the ridge so that it can be exchangeably flowed from the ventilation holes of the base plate portion with the ventilation interval of the house. Also, in the event of a fire, the fuse is melted by heat to release the lifted state of the lid plate, and the spring member pulls the lid plate so as to press-contact the plate surface of the substrate via the support shaft. The vent hole can be shielded by the lid plate portion.

In the fire protection damper for a ventilation building according to the second aspect of the present invention, the lowering of the cover plate portion due to the heat melting of the fuse can be slid and guided by the supporting frame portion from both sides, so that the vent hole of the substrate portion is provided. The cover plate portion can be smoothly shielded.

In the fire protection damper for a ventilation wing according to claim 3 of the present invention, each component including the lid plate part is provided with the bottom plate of the base plate part as a base, and the side plate and the overhanging plate of the base plate part are bent so that the angle can be adjusted. Since it is formed by bending, even if there is a slight difference in the ventilation interval of the house or the roof slope, the bottom plate of the substrate part should be placed over the ventilation interval of the house by attaching and fixing by adjusting each bending angle. You can

In the fire protection damper for a ventilation building according to claim 4 of the present invention, the axis line of the support shaft is projected downward from the plate surface of the base plate portion, and the coil spring is used as a spring member to be fitted and inserted on the axis line of the support shaft. As the fuse is melted by heat, the lid plate can be immediately pulled downward to shield the vent hole of the substrate part because the fuse comes into contact with the plate surface of the substrate part easily, and the lid plate part is also easy to resist the fire caused by fire. It can be composed of various structures.

According to a fifth aspect of the present invention, there is provided a fire protection damper for a ventilation building, in which a projecting piece projecting downward from a plate surface of a cover plate part and a receiving frame for slidably inserting and supporting the projecting piece are melted. Since the legs are formed by connecting and fixing with a possible fuse, the lid plate portion can be immediately moved down by the spring member when the fuse is melted by a simple structure.

In the fire protection damper for a ventilation building according to claim 6 of the present invention, since the lid plate portion is normally locked at the lifting position by the leg portion by the step portion of the rising plate portion, the lid plate portion is lifted. The state can be kept stable. Also, in the event of a fire, as the lid plate moves downward due to the pulling motion of the spring member, the latching claw of the rising plate part is spring-displaced in the escape direction, and the lid plate part descends until it blocks the ventilation hole. Then, the latch claws are restored to the spring to push and lock the lid plate portion in the shielding state of the vent hole, so that the lid plate portion can be configured to be reliably countered by the fire.

[0017]

EXAMPLES The following will be described with reference to the accompanying drawings, in the ridge equivalent portion having air gap W ₁ of the house in the illustrated embodiment, the inside of the ventilation ridge F covering the ventilation gap W ₁ freely vent The equipped fire damper is shown. This fireproof damper is a long one that is installed along the longitudinal direction of the ridge, and the entire main assembly is assembled by bending and forming the main components from a sheet metal material. In FIG. 2, only one end of the fire damper is shown from the side in the longitudinal direction except the ventilation wing by partially omitting the middle.

As shown in FIG. 1, the fireproof damper is assembled on the base of the base plate portion 1 in which a plurality of vent holes 10a are provided on the plate surface of the bottom plate 11 by rising flanges 10b at regular intervals in the longitudinal direction. . The base plate ₁ has a bottom plate 11 provided with the ventilation holes 10a on the plate surface so that the base plate 1 is arranged so as to be bridged at a ventilation interval W 1 of a house, and side plates 12a which are bent upward from both sides in the longitudinal direction of the bottom plate 11. , 12b and overhanging plates 13a, 13b bent laterally from the upper end sides of the side plates 12a, 12b, and formed by bending from a sheet metal material.

The base plate portion 1 is provided with overhang plates 13a and 13b.
By fixing the roof to the foundation surface on both sides of the roof ridge, the entire base can be installed at the ridge. At the time of this installation, the side plate 12 is provided so as to cope with the difference in the ventilation interval W of the house and the roof slope depending on the construction site.
a, 12b and the fixing plates 13a, 13b have bending angles α, β
Is adjustable.

The base plate 1 is used as a base, and the cover plate part 2 opposes the ventilation hole 10a of the bottom plate 11 so as to be able to shield the bottom plate 11.
Are arranged above in the parallel direction. The lid plate portion 2 includes a top plate 20 and side plates 21a and 21b, and is formed in a downward U-shape by bending a sheet metal material like the substrate portion 1. A spring member 3 for pulling and supporting the lid plate portion 2 downward is provided inside thereof, and a leg portion 4 for lifting and supporting the lid plate portion 2 above the bottom plate 11 of the base plate portion 1 against the spring member 3. Has been done.

The spring member 3 is provided with a support shaft 30 fixed to the top plate 20 of the cover plate portion 2 by the bearing 22 by a bearing 22, and an axis line 30a of the support shaft 30 is inserted through the bottom plate 11 of the base plate portion 1. It is assembled by protruding downward from the hole 14 and inserting the coil spring 31 on the axis. The spring member 3 is normally installed between the shaft head 30b and the bottom plate 11 of the base plate portion 1 so as to be in a compressed state to make elastic contact with the bottom plate 11 of the base plate portion 1. Further, the spring members 3 including the support shafts 30 can be mounted at a plurality of positions at predetermined intervals in the longitudinal direction of the cover plate portion 2.

The leg portion 4 is a projecting piece 40 fixed to the lid plate portion 2.
And a receiving frame 41 fixed to the substrate unit 1, and the plate plates facing each other are connected and fixed by a fuse 5 capable of being melted by heat to lift and support the lid plate unit 2 in the horizontal direction above the substrate unit 1. Is formed. The projecting piece 40 is formed by bending a strip-shaped sheet metal material into a substantially T-shape.
0a is fixed to the top plate 20 of the lid plate portion 2 with screws, and the protruding piece 40b is projected downward to be attached to the lid plate portion 2.

Further, the receiving frame 41 has rising edges 41a at both ends, and is formed by bending the main body portion 41b into a flat U-shape, and is formed from the entire strip-shaped plate like the projecting piece 40. The receiving frame 41 has its rising edge 41a fixed to the rising flange portion 10a of the ventilation hole 10 in abutting contact with each other, and the main body portion 41b is attached to the base plate portion 1 so as to protrude below the receiving frame 41 from the inside of the ventilation hole 10 or the like. ing.

The projecting piece 40 is slidably inserted into the main part 41b of the receiving frame 41, and the fuse 5 made of a solder material that melts at a predetermined temperature is inserted into the through hole 40c of the projecting piece 40 and the receiving frame 41. By filling the concave portion 41c, it is connected and fixed to the main body portion 41b of the receiving frame 41. With this configuration, when the fuse 5 is melted by heat, not only the lifting support of the lid plate portion 2 can be immediately released, but also the lowering movement of the lid plate portion 2 can be slid and guided by the frame 41. Further, by projecting the receiving frame 41 downward from the substrate portion 1, the overall height dimension above the substrate portion 1 can be suppressed to be small.

In addition to the above-described components, a plane U-shaped support frame portion 6 for holding the cover plate portion 2 from both end sides is provided upright from the substrate portion 1 as shown in FIG. There is.
The upper side of the strip member is bent inward toward the supporting frame 6 so as to project slightly obliquely downward from the mid-abdominal side, and a step portion 60 is further bent downward from the step portion 60. A stop pawl 61 is provided.

The stepped portion 60 connects each edge of the cover plate portion 2 to the leg portion 4.
The latch claw 61 is spring-biased so that the latch claw 61 presses the cover plate 2 at the lower end to the shielding state of the ventilation hole 10 from the plate surface of the support frame 6 by a step 60. Are separated from each other. The support frame portion 6 is formed by the support plate portion 2 when the cover plate portion 2 has a downward U-shape with both ends open.
It can also be used as a side plate that shields both ends of the cover plate 2, and can be equipped as a guide plate that slides and guides each edge when the cover plate part 2 descends.

In the fireproof damper thus constructed, the lid plate portion 2 is held in a state of being lifted up in the parallel direction by the leg portions 4, and the projecting plates 13a and 13b of the substrate portion 1 are fixed to both slopes of the roof slope. Therefore, it is equipped inside the ventilation wing F. Therefore, normally, the cover plate portion 2 separates the ventilation gap W ₂ between the lower end sides of the side plates 12a and 12b and the bottom plate 10 of the base plate portion 1 to allow the indoor and outdoor air to have a plurality of ventilation holes 10.
It is equipped so that it can flow freely with the ventilation interval W _{1 of the} house.

When installing this fireproof damper, there is a slight difference in the ventilation interval W ₁ of the house in which the bottom plate 11 of the base plate portion 1 is suspended depending on the construction site, or the overhang plates 13a and 13b of the base plate portion 1 are arranged. Even if there is a slight difference in the inclination angle of the roof slope that fixes the
a, 12b and the bending angles α of the overhang plates 13a, 13b,
If β is adjusted to be wide or narrow, it is possible to apply the overhang plates 13a and 13b to the base surface of the roof. Further, since both end sides of the lid plate portion 2 are locked by the step portions 60 of the supporting frame portion 6, the lid plate portion 2 can be attached while maintaining a stable horizontal posture.

When the fireproof damper is heated during a fire, the fuse 5 is melted by heat and the lifted state of the cover plate 2 by the legs 4 is released. In addition, since the spring member 3 is spring-biased in the extension direction, the cover plate portion 2 is brought into contact with the bottom plate 11 of the base plate portion 1 by stepping down, and the plurality of ventilation holes 10 are formed.
a is shielded. As a result, it is possible to prevent the fire at the time of the fire that rises to the ventilation interval W ₁ of the house from flowing out of the ventilation hole 10a of the substrate 1 to the outside.

When the cover plate portion 2 descends, the protruding piece 6
The protruding piece 60b of 0 is slid and guided by the main body portion 61b of the receiving frame 61. In addition to this, since both end sides of the lid plate portion 2 are also slide-guided by the supporting frame portion 6, the lid frame portion 2 is melted by heat of the fuse 5 and pulled by the spring member 4 so as to be pulled by the substrate portion 1.
It is possible to descend directly to the bottom plate of the.

As the cover plate 2 descends, the hooks 61 of the support frame 6 are spring-biased in the escape direction at the step 60,
When the lid plate portion 2 lands on the bottom plate 11 of the substrate portion 1, the lid plate portion 2 is pressed down by the lower end portion by restoring the spring. At the same time, since the spring member 3 pulls and supports the lid plate portion 2 via the support shaft 30, the lid plate portion 2 can counter the father fan due to fire and reliably keeps the ventilation hole 10a of the substrate portion 1 shielded. be able to.

In the above-described embodiment, the base plate portion 1 is composed of the downwardly U-shaped cover plate portion 2 having both open ends and the supporting frame portions 6 on both end sides.
Although it is configured to surround and shield the ventilation hole 10a of
It can be configured by including a hollow casing-shaped lid plate portion having only the lower end surface opened. The lid plate portion may be formed by slightly recessing both end surfaces so that the upper edge is projected and the latching claw 61 is slidably received. Further, by forming the cover plate portion into a flat plate shape, forming the support frame portion 6 into a long frame shape, and separately providing a ventilation hole for indoor / outdoor ventilation on the side surface above the ventilation hole 10a of the substrate portion 1, The vent hole 10a can be configured to be shielded by the flat plate-shaped cover plate portion.

In the above-mentioned embodiment, the ventilation wing F is provided at a portion corresponding to the ridge of the gable roof.
The present invention can be similarly applied to equipping a ventilation building installed on a slope midway or a ventilation building installed at a position corresponding to a diagonal ridge line of a ridge with fire prevention dampers.

[0034]

As described above, according to the fireproof damper for the ventilation building according to the present invention, a simple structure can be constructed so as not to hinder the exchange of indoor and outdoor air, and the fire at the time of fire will not leak to the outside. It can be configured to reliably block the ventilation intervals of a house. Further, even if there is a difference in the ventilation interval or roof slope of the house depending on the construction site, it is possible to easily adjust and respond to the difference in mounting.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a fire damper for a ventilation building according to the present invention from a longitudinal end side.

FIG. 2 is an explanatory view showing the fire protection damper partially omitted from the side surface on one side in the longitudinal direction.

[Explanation of symbols]

F Ventilation wing W ₁ Ventilation interval of a house 10a Vent hole of base plate 11 Bottom plate of base plate 12a, 12b Side plate of base plate 13a, 13b Overhang plate of base part α Bend angle of side plate β Bend angle of overhang plate 2 Cover plate part 3 Spring member 30 Support shaft of spring member 31 Coil spring 4 Leg part 40 Projection piece of leg part 41 Receiving frame of leg part 5 Fuse 6 Support frame part 60 Step part of support frame part 61 Hooking claw of support frame part

Claims (6)

[Claims] 1. A fire protection system for a ventilation building, which is installed inside a ventilation building to cover a ventilation space of a house in a freely ventilated manner so as to prevent a fire in case of fire from flowing out of the ventilation space to the outside. A damper, which is a board part having a plate surface provided with a ventilation hole and arranged so as to be hung at a ventilation interval of a house, and a lid positioned above the board part in a parallel direction so that the ventilation hole of the board part is shieldably opposed. A plate portion, a spring member that pulls and supports the lid plate portion in a direction that shields the vent hole of the substrate portion, and a leg portion that lifts and supports the lid plate portion above the substrate portion against the spring member, A fireproof damper for a ventilation wing, comprising: a heat-meltable fuse that holds the lifted state of the lid plate portion by the leg portion with the substrate portion. 2. The fire protection damper for ventilation according to claim 1, further comprising a supporting frame portion which is slidably received from the both end sides of the cover plate portion and is supported by the substrate portion. 3. The base portion includes a bottom plate having ventilation holes on the plate surface, side plates bent upward from opposite sides of the bottom plate, and an overhanging plate bent laterally from an upper end side of each side plate. The fire protection damper for a ventilation wing according to claim 1 or 2, wherein the bending angles of the side plate and the overhanging plate are adjustable. 4. The spring member is compression-fitted onto a support shaft projecting below the base plate portion from the cover plate part, and an axis line of the support shaft projecting below the base plate part, and is elastically contacted with the plate surface of the base plate part. 2. A coil spring for
Or the fireproof damper for the ventilation building described in 2. 5. The leg portion includes a projecting piece projecting downward from the plate surface of the lid plate section, and a receiving frame provided on the base plate section so as to slidably insert and support the projecting piece. The fireproof damper for a ventilation wing according to claim 1 or 2, wherein the plate surfaces that are in contact with the receiving frame are connected and fixed to each other by fuses that can be melted by heat. 6. The support frame portion has a step portion for locking the lid plate portion at a lifting position by a leg portion, and is bent downward from the step portion to hold the lid plate portion at the lower end portion in a state of blocking the ventilation hole. The fire-damping device for a ventilation wing according to claim 2, further comprising: a retaining claw that can be freely spring-displaced.