JPS5849356Y2 - Fire protection window glass structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fire-resistant window glass structure suitable mainly for structures such as transparent fire doors that form a fire-protected interior compartment of a building, particularly a transparent fire-rated compartment.

More specifically, a plurality of glass plates containing metal wires are spaced apart and fitted in a non-combustible and airtight manner in a groove on the inner periphery of an opening forming a window of a fireproof partition body, and a spacer interposed between the glass plates is used. Ventilation holes are provided to connect the outside air blocked by heat-fusible substances to the intermediate layer between the glass plates, improving fire protection, preventing damage to the glass plates in the event of a fire, and preventing obstruction of visibility due to soot on the glass plates. The present invention relates to a fireproof window glass structure designed to achieve the following.

BACKGROUND ART As a fireproof window glass structure, one in which a plurality of metal wire-containing glass plates are installed via a spacer to form an airtight intermediate layer between the glass plates is known.

Window glass structures employing such a laminated structure have glass plates spaced apart and placed side by side, so even if one glass softens or breaks, the other glass will still remain intact, allowing it to be used as a see-through fire door. Prevents smoke and is preferable for fire prevention.

By the way, in the conventional structure described above, an intermediate layer is formed between the glass plates, and this is kept airtight with a filler and a sealing material, but the glass plate on the side exposed to the flame in the event of a fire is bent. The glass closing surface opens, and the next glass plate is exposed to the flame and opens in the same way, allowing the flame to pass through over a long period of time, impairing the flame blocking function and preventing this flame It is desirable to extend the time for which the shutoff function is maintained.

Although it is necessary to try to solve these problems, the above problems also have the following problems.

That is, the heating of the glass plate by the flame causes the gas sealed in the intermediate layer between the glass plates to thermally expand, and as a result, the glass plate bends outward due to the pressure, which accelerates the opening due to the edge of the glass plate falling off, or The board will be damaged and the flame blocking function will be impaired.

In addition, the organic sealing material that seals the intermediate layer between the glass plates burns in the event of a fire, and since it is provided within the airtight layer, incomplete combustion occurs, and carbides such as soot adhere to the inner surface of the glass plates, resulting in The transparency of the glass plate is significantly impaired, its function as a see-through window is impaired, and firefighting activities such as fire confirmation are impeded.

The present inventor devised the present invention in order to solve the above-mentioned problems with the above-mentioned fire prevention multi-layer window glass structure.

The purpose of this invention is to fit a plurality of metal wire-containing glass plates spaced apart in a groove on the inner periphery of an opening forming a window of a fireproof partition body in a nonflammable and airtight manner, and to maintain the space between the glass plates. To provide a fireproof window glass structure in which a holder is provided with a ventilation hole that connects the outside air blocked with a heat-fusible substance and an intermediate layer between glass plates.

Therefore, the purpose of the present invention is to melt the heat-fusible substance in the event of a fire, open the ventilation hole, communicate the outside air with the intermediate layer, eliminate the expansion of the gas in the intermediate layer due to the heat of the fire, and prevent the glass plate from expanding. To provide a fireproof window glass structure capable of preventing damage caused by such damage, sufficiently maintaining a flame blocking function of a glass plate in the event of a fire, extending fire resistance time, and fully exhibiting the function.

Another purpose of the present invention is to introduce outside air into the intermediate layer through the opening of the vent hole during the flame, supply sufficient oxygen for combustion of organic sealing materials, etc., to promote complete combustion, and prevent incomplete combustion. Fire protection that prevents the generation of associated soot, etc., and also exhausts smoke from the intermediate layer, ensuring sufficient transparency of window glass even in the event of a fire, and facilitating flame confirmation and firefighting activities. A window glass structure is provided.

Further objects and advantages of the present invention will become apparent from the examples described below.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figures 1 and 2 are examples of steel fire protection □.
The figure is a vertical cross-sectional side view with the intermediate portion omitted, and FIG. 2 is a cross-sectional plan view thereof.

In Figures 1 and 2, 10 indicates a fire door body formed by joining press-formed steel plate materials.
An opening 11 forming a window is formed in the main body 10, and the inner circumferential surface of the opening 11 is configured to have three flat sides, left and right sides and the bottom, and later a groove 12 of a predetermined width and depth is formed by installing a rib.
form.

The opening 11, that is, the upper surface (ceiling surface) of the groove 12 is set one step deeper upwards than the other surfaces with a width similar to the groove width,
A recess 13 is formed.

In the groove 12 of the main body 10 described above, a plurality of glass plates containing metal wires (in the illustrated example, two glass plates 14.degree. 15) are fitted in parallel at predetermined intervals.

The lower edges 14a, 15a of the glass plates 14, 15 are supported on setting blocks 16, 16, made of, for example, calcium silicate, arranged on the bottom of the groove 12, ie on the bottom of the opening 11.

On the upper and lower surfaces of the groove 12 between the glass plates 14 and 15, spacer members 17 and 17 (hereinafter referred to as spacers) made of, for example, rectangular cylindrical steel pipes are fixed by welding or the like. Preserve spacing between top and bottom parts.

Also, as is clear from Fig. 2, the groove 1 between the glass plates 14° and 150°
Spacers 18.18 with the same structure and the same dimensions on the left and right inner surfaces of 2.
to maintain the distance between the left and right parts of the glass plate.

In the illustrated example, the upper and lower spacers 17.17 are filled with a desiccant 19 for absorbing moisture, and the inner peripheral surfaces of the spacers 17, 17 are provided with a plurality of slits 20...
It communicated with the intermediate layer 21 formed between them, dehumidified and dried the interior of the intermediate layer 21, prevented dew condensation, and ensured transparency.

The upper and lower portions and left and right portions of each glass plate 14.15 and spacers 17.17. A nonflammable filler 22 and an organic sealant 23 are interposed between both sides of the seals 18 and 18, and the sealant 2
In Step 3, the intermediate layer is hermetically sealed.

As the noncombustible filler, for example, glass putty, or inorganic materials such as fireclay, asbestos, glass fiber, and gypsum may be used singly or in an appropriate mixture.In particular, calcium compounds react with glass at high temperatures. Since the non-combustible filler forms a bonding layer, it is preferable that the content of calcium compounds in the non-combustible filler is high.

As the organic sealant, a sealant such as butyl, silicone, polysulfide, etc. is used. In particular, a ribbon-shaped molded product of butyl sealant can easily achieve a good seal.

In the illustrated example, a regular ribbon-shaped sealing material 23 is fitted and filled on the inner periphery between the spacer 17, 18 and the glass 414° 15, and an amorphous non-combustible filler 22 is filled on the outer periphery of this. By smelling, the sealing material 23 becomes the bottom when filling the filler 22, and the filling of the filler 22 can be easily performed.

Therefore, it is easy to assemble and has excellent workability.

Of course, the positional relationship between the filling material 22 and the sealing material 23 may be reversed.

A non-combustible filler 24 such as ceramic fiber is filled between the four peripheral edges of the glass plate 14 and 15 and the bottom wall of the groove 129, and the left and right edges of the glass plate 14.150 are placed inside the groove 12. hold it.

A ridge 25.25 is fixed to the outer side of the opening 11 at the periphery of the glass plate 14.15 with screws 26, and the glass putty described above is applied between the inner surface of the ridge 25.25 and the facing surface of the glass plate 14.15. Filled with non-combustible filler 27.

In the above, a plurality of ventilation holes 28... are provided on the inner surface of the vertical spacer 18.18, and communication holes 29... are provided on the outer surface including the wall forming the opening of the main body 10. The sealed intermediate layer 21 between the glass plates 14 and 15 is connected to the outside air via the glass plates 2B and 29.

The through holes 28 facing the intermediate layer 21 are closed with a heat-fusible substance 30.

The melting point of the thermofusible substance is preferably in the range of 100°C to 200°C1
For example, when the composition is 63% tin and 37% lead, the melting point is 182°C.
Use solder.

The reason why the through hole 28 is provided in the vertical spacer 18 is that when the through hole 28 is provided in the upper side spacer, the through hole 28 is closed by surface tension even when the substance 30 is in a molten state.
Therefore, horizontal holes are provided in the vertical spacers 18 on both sides to block these holes, and when melted, they fall due to gravity and quickly unblock the through holes 28.

By the way, regarding the fitting depth of the glass plates 14 and 15 into the groove 12, that is, the engagement distance, the upper engagement distance 11 is made larger than the engagement distance l at the bottom and left and right sides of the glass plate.

In particular, as proposed earlier by the present inventor, the upper part has an overhang of 1.
1 preferably has a dimension that is at least 1.6 times the thickness of each of the glass plates 14 and 15, and has excellent flame blocking performance.

This is because the glass plate softens due to the flame and bends due to gravity, and the upper part of the center of the surface separates from the groove 12, creating an open surface.
This is because if the flame is allowed to pass through, the flame blocking function will be impaired. By making the above dimensions, it is possible to suppress and prevent the upper part of the glass plate from detaching as much as possible, and maintain a long fire resistance time. It became.

In order to increase this engagement 11, there is a recess 13 at the top of the groove.
It is intended to provide

The intermediate layer 21 between the glass plates 14 and 15 is hermetically sealed as described above, but it may be filled with air, an inert gas with low heat conductivity, or dry air. You may do so.

Next, to explain its function, in the event of a fire, the fire door is heated.
The flame side of the glass plates 14, 15 is exposed to the flame or heated at ambient temperature.

Along with this, the gas in the airtight intermediate layer 21 expands, and this may cause the glass plate to soften, or simply bend outward due to the pressure caused by the gas expansion, causing the upper end of the glass plate to fall off or break at an early stage. There is a possibility that

However, the heat-fusible substance melts due to such heating and temperature rise, and as a result, the through hole 28 facing the intermediate layer 21 is unblocked and opened, and the intermediate layer 21 communicates with the outside air through the through hole 29. becomes.

Therefore, the expanded gas in the intermediate layer 21 is discharged and the inside becomes atmospheric pressure, so that there is no pressure on the glass plate, and breakage of the glass plate is prevented.

Therefore, the glass plate continues to perform its flame blocking function for a long time until the glass softens and falls off.

Furthermore, the organic sealing material 23 burns due to the heat of a fire;
As described above, the intermediate layer 21 is communicated with the outside air by releasing the through hole 28, and as a result, outside air is introduced into the intermediate layer 21, and sufficient oxygen is supplied, promoting combustion of the sealing material 23 and causing incomplete combustion. It prevents the generation of soot, etc. caused by this, and prevents insects from adhering to the inner surface of the glass.

The smoke generated inside is discharged to the outside through the through holes 28 and 29.

Therefore, visibility can be ensured even in the event of a fire.
Confirmation of flames and fire conditions can be easily and reliably performed, which is extremely advantageous from the standpoint of firefighting activities.

3 and 4 show a modified embodiment of the invention.

In the figure, a concrete wall 110 is used as a fireproof partition, and a spacer part 11 is provided at the widthwise center of the inner periphery of the opening.
7 protrudes over the entire circumference, and a frame body 125A made of angle material or the like is provided on the stepped portions 111 and 111 on both sides of the spacer portion 1170,
125B are fixed in pairs with bolts 126, and a groove 1 is formed on the inner circumferential side of the opening between the frames 125A and 125B of the pair.
12°112 are provided on both sides in the width direction.

Glass plate 114,1 with metal wire in this groove 112°112
15, the above-mentioned organic sealing material 123 and nonflammable filler 122 are placed on each inside, and nonflammable filler 1 is placed on each outside.
Fill 27.

In this way, the glass plates 14 and 15 are assembled and supported in parallel, forming an intermediate layer 121.

The outer filling material 127 was an intermediate product, and the inner peripheral side was filled with a sealing material 132 such as polysulfide sealant to maintain airtightness and watertightness.

A passage 120 is provided by burying a pipe or the like in the lower part of the spacer part 117, and this is connected to the desiccant 119 provided in the wall 110.
The storage portion 133 is connected to the screw lid 134.
It can be opened and closed freely, and the desiccant 119 can be replaced to deal with deterioration of the desiccant due to moisture permeation of concrete and condensation caused by this.

A through hole 127 is provided in the horizontal portion of the spacer portion 117 as shown in FIG.
28 was closed with the thermofusible substance 130 described above.

As described above, it goes without saying that the present invention can also be applied to the case where a fireproof window is provided in a wall.

As detailed above, according to the present invention, in a fireproof window glass structure in which a sealing intermediate layer is provided between glass plates containing multilayer metal wires, a thermofusible substance melts and opens a hole to the outside air, By communicating with the open air, as mentioned above, the glass plate is prevented from being damaged due to gas expansion in the intermediate layer, and is also prevented from deforming or falling off from the groove, greatly improving flame blocking performance and fire resistance performance. can be significantly improved.

In addition, as a result of the above, outside air is introduced into the intermediate layer, promoting complete combustion of the organic sealing member, and smoke is quickly exhausted, ensuring transparency of the glass, which is convenient for firefighting activities, and improves structural integrity. The construction is also relatively simple, and a structure with excellent fire resistance can be obtained at low cost.

In the illustrated example, an organic sealant 23 is used in addition to the nonflammable filler 22 to seal between the glass plate on the intermediate layer 21 side and the spacer to ensure an airtight seal. The organic sealant 23 may be omitted when a non-breathable material is used.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a longitudinal cross-sectional view of the first embodiment with the middle part omitted, Fig. 2 is a cross-sectional view of the same, and Fig. 3 is a second embodiment. FIG. 4 is a cross-sectional view of one side of the same side. In the drawing, 10 and 110 are partitions, 11 and 111 are openings, 12 and 112 are grooves, and 14, 15, and 114. 115 is a glass plate with metal wire, 17, 18, 117 is a spacer, 22, 27, 122, 127 is a nonflammable filler, 23, 123 is an organic sealing material, 28, 29, 12
8,129 is a through hole, and 30,130 is a heat-fusible substance.

Claims (1)

[Scope of utility model registration request] A plurality of glass plates containing metal wires are fitted at intervals between each other through a spacer in a groove provided on the inner periphery of the opening of the fireproof partition, and a non-combustible material is placed between the glass plates and the spacer. A nonflammable filler is interposed between the glass plates to substantially airtightly seal the hollow layer between the glass plates, and a nonflammable filler is interposed between the groove inner wall and the glass plate. 1. A fireproof window glass structure, characterized in that a ventilation hole is provided to communicate the intermediate layer with outside air, and the ventilation hole is closed with a heat-fusible substance.