JP2010029302A - Fireproof screen apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fireproof screen apparatus equipped with a shielding member capable of using repeatedly. <P>SOLUTION: A screen-like shielding member 5 with fire resistance is mounted on a fireproof screen apparatus 1 to allow for being paid out to a shielded object point 15 of a building and winded, and the shielding member 5 has at least two fireproof screens 6a-6c overlapped mutually and a space retention member 7 mounted between the counter fireproof screens 6a-6c and 6b-6c and composed of a material deformed by receiving the heat reversibly. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fireproof screen device, and more particularly, to a fireproof screen device that blocks the interior of a building from a location to be shut off when a fire occurs and prevents the fire from spreading to a non-fire-occurring area.

  In general, fire protection equipment such as fire shutters and fire screens are provided at the locations to be shut off inside buildings, and these fire protection equipments are activated in the event of a fire. The fire is blocked from the fire occurrence area to the non-fire occurrence area.

An example of fire prevention equipment configured as described above is described in Patent Document 1.
This fire prevention equipment includes a winding device provided on the ceiling of the building, and a fire shutter that is attached to the drum of the winding device so that it can be wound up, and operates the drum of the winding device when a fire occurs. By extending the fire shutter from the drum, the area to be blocked inside the building is blocked, preventing the spread of fire from the fire area to the non-fire area.

In this case, the fire shutter is composed of a foam heat insulating sheet made of a foam heat insulating material and a heat resistant cloth such as a silica cloth or a glass cloth provided so as to sandwich the foam heat insulating sheet from both sides. The entire cross section of is cut off.
JP 2006-63791 A

  In the fire prevention equipment configured as described above, in the normal state, the fire shutter is wound around the drum of the winder with the foam insulation sheet unfoamed, and when a fire occurs, It is configured such that a foam insulation sheet is foamed by being drawn out from the drum and shutting off a portion to be cut off of the building and heated, and a sufficient heat insulation effect is obtained by widening the interval between the heat resistant cloths.

  However, once the foam insulation sheet of the fire shutter is foamed, it is difficult to return it to the unfoamed state, so it cannot be reused after the fire is extinguished. It must be replaced with a new one in the state, and it takes time, effort, and expense.

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a fireproof screen device that can be used repeatedly.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is a fire-resistant screen device in which a curtain-shaped blocking member having fire resistance is provided at a location to be blocked in a building so as to be retractable, and the blocking members are provided in a superposed state. And at least two fireproof screens, and a spacing member made of a material reversibly deformed by receiving heat, which is provided between the fireproof screens facing each other.

According to the fireproof screen device of the present invention, in the event of a fire, the blocking member is extended to block the location to be blocked in the building, preventing the spread of fire from the fire occurrence area to the non-fire occurrence area. The
In this case, the interval holding member of the blocking member is deformed by receiving heat, so that the interval between the opposed fireproof screens is widened, and an air layer having a predetermined thickness is formed between the opposed fireproof screens. This reduces the radiant heat transferred from the fire area to the non-fire area.
In addition, after the fire is extinguished, the temperature of the fire occurrence area is lowered, so that the interval holding member returns to the form before the occurrence of the fire, and the interval between the opposed fireproof screens is narrowed. Thereby, a blocking member can be wound up and a blocking member can be made into a reusable state.

  Further, the present invention may be characterized in that the material of the spacing member is a shape memory alloy or a bimetal.

According to the fireproof screen device of the present invention, when a fire occurs, the spacing member made of shape memory alloy or bimetal is deformed by receiving heat, so that the space between the fireproof screens facing each other is widened, and the fireproof screens facing each other. An air layer having a predetermined thickness is formed therebetween, and the air layer reduces the radiant heat transferred from the fire occurrence area to the non-fire occurrence area.

  Furthermore, the present invention is characterized in that the fireproof screen is composed of two silica cloths provided in a polymerized state, and the spacing members are provided at a plurality of locations between both silica cloths. It is good.

According to the fireproof screen device of the present invention, when a fire occurs, the spacing member is deformed by receiving heat, so that a space between fireproof screens made of opposed silica cloths is widened, and a predetermined interval is set between the fireproof screens facing each other. An air layer with a thickness of approximately 10 mm is formed, and this air layer reduces the radiant heat transferred from the fire occurrence area to the non-fire occurrence area.

  Furthermore, the present invention may be characterized in that a part of each spacing member is fixed to one silica cloth.

  According to the fireproof screen device of the present invention, when a fire occurs, the spacing member is deformed from one silica cloth toward the other silica cloth, and the distance between the opposing silica cloths is widened to face each other. An air layer having a predetermined thickness is formed between the silica cloths.

  Further, the present invention provides the fireproof screen comprising a glass cloth and two silica cloths provided on both sides of the glass cloth with the glass cloth sandwiched between the silica cloth and the glass cloth. The spacing members may be provided at a plurality of locations.

  According to the fireproof screen device of the present invention, when a fire occurs, each interval holding member is deformed by receiving heat, whereby the interval between the glass cloth and each silica cloth is widened, and the glass cloth and each silica are expanded. An air layer is formed between the cloth and the radiant heat from the fire generation area to the non-fire generation area through the air layer.

  Furthermore, the present invention may be characterized in that a part of each spacing member is fixed to the glass cloth or each silica cloth.

  According to the fireproof screen device of the present invention, when a fire occurs, each spacing member is deformed from the glass cloth or each silica cloth in the direction of the opposing silica cloth or glass cloth, and the glass cloth and each silica cloth. The space between the two is widened, and an air layer is formed between them.

  As described above, according to the fireproof screen device of the present invention, when a fire breaks out, the shutoff member is extended to shut off the place to be shut off of the building, from the fire occurrence area to the non-fire occurrence area. The spread of fire is prevented. In this case, the interval holding member of the blocking member is deformed by receiving heat, so that the interval between the opposed fireproof screens is widened, and an air layer having a predetermined thickness is formed between the opposed fireproof screens. Therefore, the heat insulation performance of the blocking member can be enhanced, and the radiant heat transmitted from the fire occurrence area to the non-fire occurrence area can be reduced. In addition, after the fire is extinguished, the temperature of the area where the fire occurs decreases, so that the interval holding member returns to the form before the occurrence of the fire and the interval between the opposed fireproof screens is narrowed. Can be returned to the wound state, and the blocking member can be made reusable. Therefore, since the shielding member can be used repeatedly, the shielding member is not replaced with a new one after the fire is extinguished, and an economically advantageous one can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a fireproof screen device according to a first embodiment of the present invention. FIG. 1 is an overall schematic view, FIG. 2 is an enlarged view of a portion A in FIG. FIG. 3A is an explanatory diagram illustrating a state before heating the spacing member, and FIG. 3B is an explanatory diagram illustrating a state after heating the spacing member.

  That is, the fireproof screen device 1 according to the present embodiment, as shown in FIGS. 1 and 2, extends to the winding means 2 provided on the ceiling portion 16 of the blocking target portion 15 of the building and the winding means 2, And a blocking member 5 that is removably attached.

  The winding means 2 includes a casing 3 that is fixed to the ceiling of the ceiling portion 10 of the blocking target portion 15, a winding shaft 4 that is provided in the casing 3 so as to be capable of forward and reverse rotation, and a forward and reverse rotation of the winding shaft 4. And a lock mechanism (not shown) for locking the winding shaft 4 at a predetermined position in the rotation direction.

  The blocking member 5 includes three curtain-shaped fireproof screens 6 (outer fireproof screens 6a and 6b and inner fireproof screen 6c) provided in a superposed state with each other and the opposed fireproof screens 6a to 6c and 6b to 6c. It is comprised from the several space | interval holding member 7 provided in several places.

  The blocking member 5 has one end in the longitudinal direction fixed to the winding shaft 4 of the winding means 2, and is wound around the winding shaft 4 by rotating the winding shaft 4 forward or backward by the operation of the drive source. It is taken to form a roll and is housed in a casing 3 on the ceiling of the top 10. Further, by rotating the winding shaft 4 backward or forward, the winding shaft 4 is fed out from the periphery of the winding shaft 4, is fed out to the blocking target location 15 through the opening 17 of the ceiling portion 16, and the blocking target location 15 is blocked. To do.

  The blocking member 5 is set to a length and a width corresponding to the size of the blocking target portion 15 so as to block the entire cross section (full height, full width) of the blocking target portion 15 when the blocking member 5 is fed out from the winding shaft 4. Thus, a gap is prevented from being formed between the blocking member 5 and the blocking target portion 15, and flames, smoke, etc. leak from the fire generating area 20 to the non-generating area 21 through the gap. Is prevented.

  A weight bar 9 is attached to the other end of the blocking member 5 in the longitudinal direction. When the blocking member 5 is unwound, the lower end of the blocking member 5 contacts the floor 18 of the blocking target portion 15 via the weight bar 9. Touch. Both side portions of the blocking member 5 in the width direction are supported by guide members (not shown) provided on both side surfaces of the blocking target portion 15.

  The refractory screen 6 (outer refractory screens 6a and 6b, inner refractory screen 6c) is made of a material having flexibility and excellent incombustibility and fire resistance. For example, glass cloth, silica Cross and the like are effective.

In the present embodiment, silica cloth is used for the outer refractory screens 6a and 6b where the flame acts directly when a fire occurs, and the inner refractory screen 6c where the flame does not act directly has a lower heat insulation performance than the silica cloth. You are using a cross.
Note that silica cloth may be used for the inner fireproof screen 6c in the same manner as the outer fireproof screens 6a and 6b.

  The spacing member 7 is made of a material that is reversibly deformed by receiving heat. In the present embodiment, a shape memory alloy is used as the material constituting the spacing member 7, and the spacing member 7a is used. Is formed in a coil spring shape.

  In this case, the space holding member 7 can be restored to the extended state by receiving heat at the time of the fire by storing the extended state by performing heat treatment on the space holding member 7a. The space between the opposing fireproof screens 6a to 6c and 6b to 6c can be expanded.

  Moreover, the space | interval holding member 7 is provided in the several places between each opposing fireproof screens 6a-6c, 6b-6c at equal intervals vertically and horizontally, and by these some space | interval holding members 7, it is due to a fire. When the space holding member 7 is restored to the extended state by receiving heat, the space between the opposed fireproof screens 6a to 6c, 6b to 6c can be pushed substantially uniformly over the whole.

  Each spacing member 7 is fixed to the inner surface of each fireproof screen 6 (outer fireproof screens 6a and 6b, inner fireproof screen 6c) by a fixing metal fitting 8. Examples of the fixing metal 8 include a snap made up of a male metal fitting having a protrusion and a female metal fitting having a hole. The male metal fitting is attached to both ends of each spacing member 7, and the female metal fitting is attached to each fireproof screen 6 (outer fireproof screen 6). Attached to the screens 6a and 6b and the inner fireproof screen 6c), the male fittings at both ends of each spacing member 7 and the female fittings of the respective fireproof screens 6 (outer fireproof screens 6a and 6b and inner fireproof screen 6c) are fitted to each other. Thus, each spacing member 7 is fixed at a predetermined position between the opposed fireproof screens 6a to 6c and 6b to 6c.

Next, the operation of the fireproof screen device 1 according to the present embodiment configured as described above will be described.
First, in a normal state where no fire has occurred, as shown in FIG. 3A, each spacing member 7 is in a contracted state, and between the opposing fireproof screens 6a to 6c and 6b to 6c of the blocking member 5. In this state, the blocking member 5 is wound around the winding shaft 4 of the winding means 2 and accommodated in the casing 3 on the back of the ceiling of the ceiling portion 16, and in this state, the lock mechanism (see FIG. (Not shown).

  When a fire occurs, as shown in FIGS. 1, 2, and 3 (b), the locked state by the locking mechanism is released, and the winding shaft 4 rotates forward or backward, The blocking member 5 is drawn out from the periphery of the winding shaft 4, the blocking member 5 is drawn out to the blocking target portion 15 through the opening 17 of the ceiling portion 16, and the weight bar 9 at the lower end of the blocking member 5 is moved to the floor portion 18. Abutting and the blocking target portion 15 is blocked.

  And the flame by a fire acts on the outer side fireproof screens 6a and 6b of the interruption | blocking member 5, The heat is transmitted to each space | interval holding member 7 via the outer side fireproof screens 6a and 6b, and each space | interval holding member 7 is heated. Is restored to the extended state, the space between the opposed fireproof screens 6a to 6c, 6b to 6c is expanded, and the air layer 10 is formed between the opposed fireproof screens 6a to 6c, 6b to 6c. The air layer 10 enhances the heat insulation performance of the blocking member 5, prevents flames, smoke, etc. from leaking from the fire generating area 20 to the non-generating area 21 and prevents the non-generating area 21 from spreading. Is done.

  In addition, when the fire is extinguished and the temperature of the fire occurrence area 20 is lowered, each interval holding member 7 restored to the expanded state by receiving heat from the fire is contracted (see FIG. 3A). )), The interval between the respective fireproof cloths 6a to 6c and 6b to 6c facing each other is reduced. In this state, the winding shaft 4 of the winding means 2 is rotated reversely or forwardly, and the blocking member 5 is wound around the winding shaft 4. It is stored in the casing 3.

  In the fireproof screen device 1 according to the present embodiment configured as described above, the respective fireproof screens 6a to 6c and 6b to 6c constituting the blocking member 5 are reversibly deformed by receiving heat. Since the interval holding member 7 made of the material (shape memory alloy) to be used is provided, the interval between the fireproof screens 6a to 6c and 6b to 6c facing each other is expanded by the interval holding member 7 when a fire breaks out. By forming the heat insulation performance, the distance between the opposing fireproof screens 6a to 6c and 6b to 6c can be narrowed by the distance holding member 7 when the fire is extinguished.

  Therefore, it is not necessary to replace the blocking member 5 used at the time of the occurrence of the fire with a new one after the fire is extinguished, and the blocking member 5 can be used repeatedly, so that an economically advantageous one can be provided.

  FIG. 4 shows a second embodiment of the fireproof screen device 1 according to the present invention. This fireproof screen device 1 is configured such that the spacing member 7 is made of bimetal, and the spacing member 7 is interposed at a plurality of locations between the opposing fireproof screens 6a to 6c and 6b to 6c. The configuration is the same as that shown in the first embodiment.

  In this case, the spacing member 7 made of bimetal has a flat plate shape as shown in FIG. 4A in a normal state before the occurrence of a fire, and when it receives heat when the fire occurs, FIG. As shown to (b), it is comprised so that it may deform | transform into a circular arc plate shape. As shown in FIG. 4A, the spacing member 7 is fixed to the inner refractory screen 6c by a fixing bracket 8 and deformed into a circular arc plate shape by receiving heat, as shown in FIG. As shown in b), both ends are in contact with the outer fireproof screens 6a and 6b, and the distance between the opposed fireproof screens 6a to 6c and 6b to 6c is expanded, so that the respective fireproof screens 6a to 6c and 6b to 6c are opposed to each other. An air layer 10 is formed therebetween.

  And even in the fireproof screen device 1 according to the present embodiment, similarly to the one shown in the first embodiment, between the opposed fireproof screens 6a to 6c and 6b to 6c constituting the blocking member 5. Since the space holding member 7 made of a material (bimetal) that is reversibly deformed by receiving heat is provided, the space holding member 7 causes the fireproof screens 6a to 6c and 6b to 6c to face each other when a fire occurs. By forming the air layer 10 by expanding the interval, the heat insulation performance can be enhanced, and the interval between the fireproof screens 6a to 6c and 6b to 6c facing each other can be reduced by the interval holding member 7 when the fire is extinguished.

  Therefore, it is not necessary to replace the blocking member 5 used at the time of the occurrence of the fire with a new one after the fire is extinguished, and the blocking member 5 can be used repeatedly, so that an economically advantageous one can be provided.

  FIG. 5 shows a third embodiment of the fireproof screen device 1 according to the present invention. In this fireproof screen device 1, the blocking member 5 is constituted by two fireproof screens 6a and 6b, and interval holding members 7 made of a shape memory alloy are provided at a plurality of locations between the fireproof screens 6a and 6b. Other configurations are the same as those shown in the first embodiment.

  In this case, as shown in FIG. 5 (a), one end of each spacing member 7 made of a shape memory alloy is fixed to one fireproof screen 6a or the other fireproof screen 6b via a fixture 8. As shown in (b), it is restored to the extended state by receiving heat from the fire, the other end abuts against the counterpart fireproof screen 6b, 6a, and the gap between the fireproof screens 6a-6b is pushed wide. An air layer 10 is formed between the fireproof screens 6a to 6b.

  And even if it exists in the fireproof screen apparatus 1 by this Embodiment, like what is shown to the said 1st Embodiment, by receiving heat between the fireproof screens 6a and 6b which comprise the interruption | blocking member 5, it receives. Since the space holding member 7 made of a reversibly deformable material (shape memory alloy) is provided, heat insulation is achieved by forming the air layer 10 by expanding the space between the fireproof screens by the space holding members when a fire occurs. The performance can be improved, and the interval between the fireproof screens 6a and 6b can be narrowed by the interval holding member 7 when the fire is extinguished.

  Therefore, it is not necessary to replace the blocking member 5 used at the time of the occurrence of the fire with a new one after the fire is extinguished, and the blocking member 5 can be used repeatedly, so that an economically advantageous one can be provided.

  FIG. 6 shows a fourth embodiment of the fireproof screen device 1 according to the present invention. In this fireproof screen device 1, the blocking member 5 is constituted by two fireproof screens 6a and 6b, and interval holding members 7 made of bimetal are provided at a plurality of locations between the fireproof screens 6a and 6b. The configuration of is the same as that shown in the second embodiment.

  In this case, as shown in FIG. 6 (a), each spacing member 7 made of bimetal is fixed to one fireproof screen 6a or the other fireproof screen 6b via a fixing bracket 8, as shown in FIG. As shown in b), when receiving heat from the fire, it is deformed into a circular arc plate shape so that both ends abut against the counterpart fireproof screens 6b, 6a, and the space between the fireproof screens 6, 6b is widened to form the air layer 10. It is configured to form.

  And even if it exists in the fireproof screen apparatus 1 by this Embodiment, by receiving heat between both fireproof screens 6a and 6b which comprise the interruption | blocking member 5, similarly to what is shown to the said 2nd Embodiment. Since the space holding member 7 made of a reversibly deformable material (bimetal) is provided, the air space 10 is formed by expanding the space between the fireproof screens 6a and 6b by each space holding member 7 when a fire occurs. Thus, the heat insulation performance can be improved, and the interval between the refractory screens 6a and 6b can be narrowed by each interval holding member 7 when the fire is extinguished.

  Therefore, it is not necessary to replace the blocking member 5 used at the time of the occurrence of the fire with a new one after the fire is extinguished, and the blocking member 5 can be used repeatedly, so that an economically advantageous one can be provided.

  In each of the above embodiments, the case where the blocking member 5 is configured by the three fireproof screens 6a, 6b, 6c and the two fireproof screens 6a, 6b has been described. You may comprise a fireproof screen.

It is the schematic which showed the whole 1st Embodiment of the fireproof screen apparatus by this invention. It is an enlarged view of the A section of FIG. (A) is explanatory drawing which showed the state before the heating of a space | interval holding member, (b) is explanatory drawing which showed the state after the heating of a space | interval holding member. It is the schematic which showed the fireproof screen apparatus of 2nd Embodiment, (a) is explanatory drawing which showed the state before the heating of a space | interval holding member, (b) is the state after the heating of a space | interval holding member. It is explanatory drawing shown. It is the schematic which showed the fireproof screen apparatus of 3rd Embodiment, (a) is explanatory drawing which showed the state before the heating of a space | interval holding member, (b) is the state after the heating of a space | interval holding member. It is explanatory drawing shown. It is the schematic which showed the fireproof screen apparatus of 4th Embodiment, (a) is explanatory drawing which showed the state before the heating of a space | interval holding member, (b) is the state after the heating of a space | interval holding member. It is explanatory drawing shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fireproof screen apparatus 2 Winding means 3 Casing 4 Winding shaft 5 Blocking member 6 Fireproof screen 6a Outer fireproof screen 6b Outer fireproof screen 6c Inner fireproof screen 7 Spacing holding member 8 Fixing fixture 9 Weight bar 10 Air layer 15 Blocking object place 16 Ceiling part 17 Opening part 18 Floor part 20 Fire occurrence area 21 Non-occurrence area

Claims (6)

A fire-resistant screen device in which a curtain-shaped shut-off member having fire resistance is extended to a place to be shut off of a building and provided so as to be wound up,
The blocking member includes at least two fireproof screens provided in a superposed state, and a spacing member made between materials facing each other and reversibly deformed by receiving heat. A fireproof screen device characterized by comprising:   The fireproof screen device according to claim 1, wherein a material of the spacing member is a shape memory alloy or a bimetal.   The said fireproof screen consists of two silica cloths provided in a state of being polymerized with each other, and the spacing members are provided at a plurality of locations between both silica cloths. Fireproof screen device.   The fireproof screen device according to claim 3, wherein a part of each spacing member is fixed to one silica cloth.   The fireproof screen is composed of a glass cloth and two silica cloths provided with the glass cloth sandwiched on both sides of the glass cloth, and the space is provided at a plurality of positions between the silica cloth and the glass cloth. The fireproof screen device according to claim 1, wherein a holding member is provided.   The fireproof screen device according to claim 5, wherein a part of each spacing member is fixed to the glass cloth or each silica cloth.

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