JPH0663790U - Fireproof and thermal shutter device - Google Patents

Abstract

(57) [Summary] [Purpose] By preventing the high temperature heat on the flame side during a fire from reaching the non-flame side, and obtaining a good heat shield effect,
Prevent secondary fires from occurring on the non-flame side and ensure a safe fire-prevention zone for evacuees. [Structure] A combination of a fire door or fire shutter 2 and a heat-shield shutter curtain 4 is used. The heat-shield shutter curtain 4 is normally stored and held on the ceiling side in a horizontally folded state so that it can be lowered by its own weight when a fire occurs. A heat shield space S is formed between the fire door and the fire shutter 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fireproof and heat-insulating shutter device which is a combination of a fireproof door made of glass and a fireproof shutter.

[0002]

[Prior art]

 In recent years, particularly in buildings such as office buildings and department stores, glass is often used as an internal partitioning material, and the glass is made of a material that has extremely little thermal expansion, so that it is also possible to form a fire-prevention zone in the event of a fire. It is being appreciated.

Further, conventionally, there is also known a fire-prevention shutter that forms a fire-prevention zone by a slat curtain formed by connecting a plurality of slats made of a metal plate in a rotatable and bendable manner in series.

[0004]

[Problems to be solved by the device]

 However, even with glass with a very small coefficient of thermal expansion, which has been used in the past for forming fire-blocking areas, a large amount of radiant heat energy can be easily transmitted at the time of a fire, so non-flame on the side opposite the fire-generating chamber. The room also became extremely hot, which caused problems such as a secondary fire and the inability to secure a safe fireproof area for evacuees.

Further, even in the conventional fireproof shutter, since the slat curtain is formed of a simple metal plate and has a very high thermal conductivity, it is possible to obtain a temporary fireproof performance in the event of a fire. , The surface of the slat curtain on the non-flame side becomes extremely hot, and the radiant heat of the slat curtain eventually causes the flammable substance to ignite on the non-flame side of the slat curtain, causing fire to spread, which is a safe fireproof area for evacuation. There was a problem that securing of the region could hardly be expected.

This invention was made in order to solve the above problems, and the heat of the flame side at the time of a fire does not reach the non-flame side, and a good heat shield effect is obtained. It is an object of the present invention to provide a fireproof and heat-insulating shutter device that can prevent the occurrence of the next fire and secure a safe fireproof area for evacuees.

[0007]

[Means for Solving the Problems]

 A fireproof and heat-insulating shutter device according to the invention of claim 1 is a fire door or a fire shutter installed in a building, and is housed in a horizontally folded state on a ceiling side in the vicinity of the fire door or the fire shutter, and a fire. Only when they occur, the thermal shutter curtain descends to a position apart from the fire door or the fire shutter, and is pivotally displaced vertically in the lowering process to form a heat shield space between the fire door and the fire shutter. It is a combination of and.

In the fireproof and heat shield shutter device according to the invention of claim 2, the heat shield curtain has a plurality of upper and lower heat shield panels in which the heat shield curtain is in a hanging posture at a descent limit position, and these heat shield panels are respectively connected to each other. And the upper end is fixed to the ceiling side, and the panel connecting strips for suspending each of the heat shield panels so that they are in a hanging posture, and the panel connecting members on both upper sides of each heat shield panel. Guide protrusions that are provided below the connecting points of the strips and that are vertically inserted into and engaged with the side guide grooves that guide each heat shield panel up and down, and on both upper and lower sides of the lowermost heat shield panel. Each of them is composed of a descending strip connected to each other, and the descending strip and the panel connecting strip are wound up by a panel descending regulation foil, and the heat shield panels are stored in a horizontally folded state on the ceiling side, and a fire is generated. Birth Occasionally, the interlocks or brakes on the panel descent control foils are automatically released by a fire detection signal, and the heat shield panels drop by their own weight. It is configured so as to be sequentially rotated and displaced.

[0009]

[Action]

 In the fireproof and heat shield shutter device according to the first aspect of the present invention, when a fire occurs, the heat shield shutter curtain, which is housed in a horizontally folded state on the ceiling side near the fire door or the fire shutter, rotates vertically. By displacing and lowering to the position near the fire door or the fire shutter, a heat shield space is formed between the fire door or the fire shutter and the heat shield shutter at the end point of the descent. Therefore, it is possible to prevent the fire door or the fire shutter from directly contacting the flame at the time of a fire with the heat shield shutter curtain, and even if the fire door or the fire shutter is on the flame side, the fire door that has become hot Or, the heat shield shutter curtain is not affected by the secondary radiant heat from the fire prevention shutter, so that it is possible to prevent the occurrence of a secondary fire (spreading) on the non-flame side and to prevent evacuees from escaping. It is possible to secure a safe fireproof zone.

In the fireproof and heat shield shutter device according to the second aspect of the present invention, when a fire occurs, the interlock or brake of the panel descent control wheel is automatically released by a fire detection signal from a fire alarm or the like. As a result, each heat shield panel of the heat shield shutter curtain, which was held in a horizontally folded state on the ceiling side, descends by its own weight. In this case, each of the heat shield panels starts to descend in a horizontally folded state when stored, and as the descending process progresses, the uppermost heat shield panel is pivotally displaced to a substantially vertical posture in the descending process. Then, the heat shield panels in the next stage are also rotationally displaced in the same manner, and the heat shield panels are sequentially pivotally displaced from the uppermost heat shield panel in the process of lowering their own weight, and the lowermost heat shield panel is also displaced. Similarly, it comes into contact with the ground when it has been rotated and displaced to a substantially vertical position. Such a rotational displacement of the heat shield panel is performed by connecting the upper and lower sides of each heat shield panel with a panel connecting strip whose upper end is fixed to the ceiling side, and by using the panel descent control foil. The four descending strips that are wound up are connected to the upper and lower sides of both sides of the bottommost heat shield panel only, and the bottommost heat shield panel is in a horizontal position after the vertical displacement of the heat shield panel immediately above. It is smoothly suspended by being vertically rotatably displaceable. Further, guide protrusions are provided on the upper sides of both sides of each heat shield panel, and these guide protrusions are configured to be fitted and engaged with side guide grooves that guide the heat shield panel up and down. Therefore, even if the heat shield panel that descends as described above when a fire occurs receives wind pressure due to the flame, the heat shield panel does not sway due to the wind pressure. Is performed more smoothly, and the same effect as in the case of claim 1 is obtained.

[0011]

【Example】

 An embodiment of this invention will be described below with reference to the drawings. 1 is a schematic side view showing a fire and heat shield device according to an embodiment of the present invention, FIG. 2 is an enlarged side view of a main part of FIG. 1, and FIG. 3 is a cross-sectional plan view of FIG. In the figure, 1 is a glass mounting frame for a building (fire door mounting frame), 2 is a fire door mounted on the glass mounting frame 1, and the fire door 2 is made of glass whose material has an extremely small coefficient of thermal expansion. ing.

Reference numeral 3 denotes a shutter storage portion provided in a ceiling portion near the fire door 2, 4 denotes a heat shield shutter curtain horizontally stored in the shutter storage portion 3, and 5 denotes the heat shield shutter curtain. 4 is a side guide groove for guiding up and down 4.

The heat shield shutter curtain 4 has a configuration in which a plurality of upper and lower heat shield panels 41 and 42, which are in a substantially vertical hanging posture at a descent limit position, are connected and suspended in a manner described later. .

Each of the heat shield panels 41, 42 is made of, for example, a ceramic fiber-based plate-like member, and the plate-like member can have a large thickness, so that high heat shield performance can be obtained.

In the heat shield panels 41 and 42, upper portions on both sides in a hanging posture are connected in series by a panel connecting member 6, and an upper end of the panel connecting member 6 is on a ceiling side (shutter accommodating portion 3). It is connected and fixed to. In addition, guide rollers (guide protrusions) located below the vicinity of the connection point P of the panel connecting strip 6 when the heat shield panels 41 and 42 are in the hanging posture are provided on the upper sides of both sides of the heat shield panels 41 and 42. 7), and these guide rollers 7 are fitted and engaged in the side guide grooves 5 so as to be movable up and down.

The lowering heat shield panel 42 of the heat shield panels 41, 42 is connected to the lower strips 8 and 9 at both upper and lower sides thereof. These descent strips 8 and 9 are wound up by a panel descent control foil 10 shown in FIGS.

Here, in the descent strips 8 and 9, the descent strips 9 connected to the lower end portions of the heat shield panels 41 and 42 in the hanging posture are for controlling the panel descent via the guide wheels 11. It is wound up with foil 10.

In this manner, by winding the falling strips 8 and 9 up to the winding limit with the panel descent control foil 10, as shown in FIGS. 42 is horizontally folded and stored and held in the shutter storage section 3.

In this case, the descent strips 8 and 9 are used to regulate the descent of the panels from the shutter curtain closed state in which all the heat shield panels 41 and 42 hang down in a substantially vertical direction in a series as shown in FIG. The foil 10 may be wound up, and the lowermost heat shield panel 42 may be rotated and displaced in a horizontal posture while being wound up.

In this way, when all the heat shield panels 41 and 42 are stored in the shutter storage part 3 in a horizontally folded state by winding the descending strips 8 and 9 with the panel descending control foil 10. During the winding of the descending strips 8 and 9, it is necessary to generate a differential speed between the descending strips 8 and 9 until the lowermost heat shield panel 42 is rotationally displaced from the hanging posture to the horizontal posture. In order to achieve this, the panel descent control wheel 10 may be equipped with a speed governing mechanism such as a governor.

The panel descent control foil 10 provided with a speed governing mechanism such as a governor can lower the heat shield panels 41 and 42 at the storage position at a constant speed. The panel descent control foil 10 is provided with an interlock mechanism or a brake for holding the heat shield panels 41 and 42 in the storage position as described above, and inputs a fire detection signal from a fire alarm or the like when a fire occurs. Thus, the interlock or the brake is released.

Next, the operation will be described. As shown in Fig. 1 and Fig. 2, when all the heat shield panels 41 and 42 are stored and held in the shutter storage part 3 in a horizontally folded state, when a fire occurs, a fire detection signal from a fire alarm or the like is sent. The interlock or brake of the panel descent control wheel 10 is automatically released.

Then, the heat shield panels 41, 42 in the horizontally folded state start to descend by their own weight in the same state, and the heat shield panels 41, 42 are sequentially moved from the uppermost heat shield panel 41 as the descending progresses. It is rotated and displaced in the vertical direction.

That is, in the process of lowering the heat shield panels 41 and 42 by their own weight, when the panel connecting member 6 having the fixed upper end extends to the connecting point P of the uppermost heat shield panel 41, the connecting point P is further increased. Since it does not descend, the other heat shield panels 42, 41 are separated from the connection point P, and the uppermost heat shield panel 41 is the heat shield panel 42 shown in FIG. 4 as the separation progresses. Similarly to the above, it is rotationally displaced in the vertical direction. In this case, since the guide roller 7 of the uppermost heat shield panel 41 is located below the connection point P with the panel link strip 6 and is fitted into the side guide groove 5, the guide roller 7 is engaged with the side guide groove 5. The upper heat shield panel 41 smoothly pivots about its own guide roller 7 in the vertical direction under its own weight.

In this way, the heat shield panels 41, 42 are lowered by their own weight, and the heat shield panels 42, 41 on the lower stage side are sequentially rotationally displaced from the uppermost heat shield panel 41, and the lowermost heat shield panels 41, 42 are sequentially displaced. As shown in FIG. 5, when the panel 42 is rotationally displaced to the drooping posture, the lower end of the lowermost heat shield panel 42 is grounded, so that the heat shield shutter curtain 4 is fully closed. A heat shield space S 1 is formed between the curtain 4 and the fire door 2.

Therefore, for example, when the side of the heat shield shutter curtain 4 opposite to the fire door 2 is set to the flame side, the heat shield shutter curtain 4 can surely prevent the flame from directly contacting the fire door 2, and the fire door Since it is possible to prevent abnormally high temperatures in 2 and the vicinity thereof, it is possible to prevent the fire from spreading on the side of the fire door 2 (non-flame side) and to secure a safe fire-blocking area.

Even when the fire door 2 is on the flame side, the secondary radiant heat from the fire door 2 having a high temperature significantly reduces the heat shield space S, so that the heat shield shutter curtain 4 is not exposed. The flame side is almost unaffected by the secondary radiant heat. Therefore, similar to the case where the heat shield shutter curtain 4 is on the flame side, the spread of fire on the non-flame side can be prevented and a safe fireproof zone Can be secured.

The panel connecting strip 6 and the descending strips 8 and 9 described in the above embodiment may be wires or chains. Further, the fire door 2 may be replaced with an ordinary slat having fire resistance or a fire shutter such as a panel shutter, and in this case, the same effect can be obtained.

[0029]

[Effect of device]

 As described above, according to the first aspect of the present invention, in the event of a fire, the heat shield shutter curtain, which was housed in a horizontally folded state on the ceiling side in the vicinity of the fire door or fire shutter, is pivotally displaced in the vertical direction. However, since it is configured to descend near the fire door or fire shutter, it is possible to prevent the flame from directly contacting the fire door or shutter with the heat shield shutter curtain, and the fire door or fire shield. Even if the shutter is on the flame side, the heat shield shutter curtain is not affected by the secondary radiant heat from the fire doors or shutters that have risen in temperature, and therefore the secondary fire on the non-flame side ( This has the effect of preventing the spread of fire) and ensuring a safe fireproof area for refugees.

According to the invention of claim 2, the upper and lower sides of each of the upper and lower heat shield panels are connected in series by the panel connecting members whose upper ends are fixed to the ceiling side, and the lowermost heat shield panel is also connected. The lower strips are connected to the upper and lower sides, respectively, and these lower strips are rolled up by the panel lowering control foils, and the heat shield panels are stored and held in a horizontally folded state on the ceiling side. Since the interlock or brake of the panel descent control foil is released by a fire detection signal from a fire alarm, etc., when the fire occurs, each of the heat shield panels in the horizontal folding state held on the ceiling side is The weight of the heat shield panel can be lowered by its own weight, and further, in the course of the weight drop, the operation of sequentially rotating and displacing each heat shield panel in the vertical direction is smoothly performed, and the same effect as in the case of claim 1 can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a fire and heat shield shutter device according to an embodiment of the present invention.

FIG. 2 is an enlarged side view of a main part of FIG.

3 is a cross-sectional plan view of FIG.

FIG. 4 is an operation explanatory diagram when the heat shield panel is lowered.

FIG. 5 is a diagram showing a finish state of lowering the heat shield panel.

[Explanation of symbols]

 2 Fire doors or shutters 4 Heat shield shutter curtains 5 Side guide grooves 6 Panel connecting members 7 Guide protrusions (guide rollers) 8 Falling strips 9 Drop strips 10 Panel descent control foils 41 Heat shield panels 42 Heat shields Panel P Connection point of panel connecting strip

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display area E06B 9/17

Claims (2)

[Scope of utility model registration request] 1. A fire door or a fire shutter installed in a building, and a fire door or a fire shutter that is housed in a horizontally folded state on the ceiling side near the fire door and only when a fire occurs. A fire protection comprising a combination with a heat shield shutter curtain that descends to a nearby separation position and pivotally displaces in the vertical direction in the descending process to form a heat shield space with the fire door or the fire shutter. Combined heat shield shutter device. 2. The heat shield shutter curtain comprises a plurality of upper and lower heat shield panels that are in a hanging posture at a descent limit position, and these heat shield panels are connected to each other at upper portions on both sides thereof, and the upper end is fixed to the ceiling side. A panel connecting strip member for suspending each of the heat shield panels so as to be in a hanging posture, and below the connection point of the panel connecting strip members on both upper sides of each of the heat shield panels. It consists of guide protrusions that are vertically inserted into and engaged with side guide grooves that guide the heat shield panel up and down, and descending strips connected to the upper and lower sides of the bottommost heat shield panel. The descent strip and the panel connecting strip are rolled up by a panel descent control foil to store each heat shield panel in a horizontally folded state on the ceiling side, and in the event of a fire, the panel descent control foil interlock or Alternatively, the brakes are automatically released by a fire detection signal so that each heat shield panel descends by its own weight, and in the descending process, each heat shield panel is sequentially rotationally displaced in a substantially vertical posture. The fireproof and thermal barrier shutter device according to claim 1.