JP2000104365A - Joint structure of fire-insulating panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the joint structure of a fire-insulating panel, in which transmission to the other face (a rear) side of a heating temperature of one face (a surface) side in the joint section of the fire-insulating panel, in which a fire-resisting core material is interposed between a pair of surface plates, is reduced. SOLUTION: The fire-insulating panels 3 with a pair of surface plates 1 and rock wool 2 interposed between these surface plates 1 are joined mutually. A fire-resisting foamed packing 8 is interposed at the central section of rock wool 2 in the joint sections 9 of the fire-insulating panels 3 at that time. Accordingly, transmission to the other face (a rear) side of a heating temperature of one face (a surface) side in the joint sections 9 of the fire-insulating panels 3 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure of a fire-resistant and heat-insulating panel, and more particularly, to a fire-resistant and heat-insulating panel having a pair of surface plates and a fire-resistant core material interposed between the surface plates. The present invention relates to a joint structure formed by joining together.

[0002]

2. Description of the Related Art In general, as shown in FIG. 7, a pair of surface plates 1 made of a galvanized steel plate and a pair of surface plates 1 interposed between the surface plates 1 are provided as fire-resistant insulation panels (hereinafter referred to as panels). There is known one having a fire-resistant core material 2 made of rock wool. Panel 3 configured in this way
To join each other, the joining side end of one panel 3
A convex groove 4 for filling the refractory core material 2 is formed, and a groove on the joint side end of the other panel 3 is formed by bending the surface plate 1 into a substantially L-shape and fitting the convex groove 4 therein. 5 is formed, and is fixed with a fixing member, for example, a rivet 6 in a state where the ridges 4 are fitted into the concave grooves 5 (see FIG. 7B).

[0003]

However, in the conventional panel 3, since the refractory core 2 is cotton-like,
It is not possible to uniformly fill the space between the surface plates 1 with high dimensional accuracy. Therefore, when both panels 3 are joined, the refractory core material 2 at the joining portion is not completely adhered, and FIG.
A space 7 as shown in FIG. When the space 7 is generated as described above, the high-temperature air on the heating side in the event of a fire flows out from the joint on the back side, and the back surface temperature exceeds the temperature reference value (260 ° C.) of the joint on the fire-resistant insulation panel. was there.

As a means for solving the above problem, as shown in FIG. 8, a refractory foam packing 8 for producing a foamed flame retardant at a predetermined heating temperature between surface plates 1 of a panel 3 at a joint portion, for example, Inmex. (Trade name) is used, but in such a structure, since the temperature at which the refractory foam packing 8 foams is transmitted to the back side, the back side temperature is lower than the reference value. There was a fear of exceeding.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a heating temperature on one side (front side) of a joint of a fire-resistant insulation panel in which a fire-resistant core material is interposed between a pair of surface plates. It is an object of the present invention to provide a joint structure of a fire-resistant heat-insulating panel in which transmission to a back side is reduced.

[0006]

In order to achieve the above object, a first joint structure of a fire-resistant heat insulating panel according to the present invention comprises a pair of surface plates and a refractory core material interposed between the surface plates. A joint structure in which fireproof heat insulating panels provided are joined to each other, characterized in that a fireproof foam packing is interposed at a center portion of the fireproof core material at a joint portion of the fireproof heat insulating panel (claim 1). ).

[0007] The joint structure of the second fire-resistant and heat-insulating panel is a joint structure formed by joining fire-resistant and heat-insulating panels each having a pair of surface plates and a fire-resistant core material interposed between the surface plates. A fire-resistant foam packing is interposed between both ends of the fire-resistant core material at the joints of the fire-resistant insulation panel on the surface plate side (claim 2).

[0008] In the present invention, a ridge for filling a refractory core material is formed at the joint side end of one refractory heat insulating panel, and a face plate is bent at the joint side end of the other refractory heat insulating panel. It is preferable to form a concave groove for inserting the convex ridge, fix the convex ridge and the concave groove with a fixing member, and attach a decorative member on the outer side of the fixing member ( Claim 3).

According to the first or second aspect of the present invention, a fire-resistant foam packing is interposed at the center of the fire-resistant core material at the joint of the fire-resistant heat insulating panel or at both ends of the fire-resistant core material on the surface plate side. As a result, one surface (front surface) of the joint is heated, and when the heat is transmitted to the refractory foam packing, the refractory foam packing foams to generate a foamed flame retardant. Heat transfer can be reduced. Further, since the refractory foam packing is interposed in the refractory core material in an intermittent state, transmission of heat to the back side when the refractory foam packing foams can be suppressed. Therefore, the transfer of heat from one surface (front surface) side to the other surface (rear surface) side of the joint can be reduced as much as possible, and fire spread such as fire can be prevented.

[0010] According to the third aspect of the present invention, a ridge for filling a refractory core material is formed at the joint side end of one of the fireproof and heat insulating panels, and at the joint side end of the other fireproof and heat insulating panel. ,
The surface plate is bent to form a concave groove for inserting the convex ridge, and the convex ridge and the concave groove are fixed by a fixing member, and a decorative member is attached to an outer side of the fixing member. By doing so, it is possible to strengthen the joint of both fireproof insulation panels,
In addition to improving fire resistance and heat insulation,
The appearance can be improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a joint structure of a fire-resistant and heat-insulating panel according to the present invention will be described below in detail with reference to the accompanying drawings. The same parts as those in the conventional structure will be described with the same reference numerals.

FIG. 1 is a sectional perspective view showing a first embodiment of a joint structure of a fireproof and heat insulating panel of the present invention, FIG. 2 is an exploded sectional perspective view thereof, and FIG. 3 is an enlarged sectional view of a main part.

The two refractory heat-insulating panels 3 (hereinafter referred to as panels) to be joined include a pair of galvanized steel surface plates 1 and a refractory core material interposed (filled) between the surface plates 1, for example. And a rock wool 2. Also,
At the joint-side end of one panel 3, a ridge 4 filled with rock wool 2 is formed between bent pieces 1 a obtained by bending both surface plates 1 in a substantially L-shape. At the joint side end of the other panel 3, a pair of bent pieces 1 a formed by bending both surface plates 1 in a substantially L shape is formed, and a concave groove 5 into which the ridge 4 is inserted.
Are formed. Furthermore, in the center of the rock wool 2 exposed on the bottom surface of the concave groove 5 of the other panel 3, a strip-shaped refractory foam packing 8 made of, for example, Intmex (trade name) extends over the entire length of the panel 3. It is disposed with its surface exposed (see FIG. 2B).

In this case, the refractory foam packing 8 is shown in FIG.
As shown in FIG. 5A, the flat end faces 8a are in contact with each other and connected, or as shown in FIG. 5B, the inclined end faces 8b are in contact with each other and connected. The material of the refractory foam packing 8 includes a carbide forming agent, a reaction catalyst substance for causing a dehydration reaction with the carbide forming agent during combustion to promote carbonization of the carbide forming agent, and a foamed flame retardant during heating. A mixture of a foaming agent to be produced and a binder can be used. In this case, as the carbide-forming agent, for example, carbohydrates such as starch, dextrin and polysaccharide, polyfunctional alcohols such as monopentaerythritol, and resinous substances such as urea resin can be used. Also,
As the reaction catalyst substance, for example, a phosphate compound such as ammonium phosphate can be used. In addition, as the foaming agent, for example, a material that releases a nonflammable gas such as ammonia by thermal decomposition, such as ammonium phosphate, melamine, and urea can be used. The binder is a binder for forming a coating film. For example, an aqueous resin such as an acrylic resin emulsion such as polymethyl acrylate or polyethyl acrylate, or a solvent system such as an alkyd resin can be used.

The two panels 3 formed as described above have the ridge 4 of one panel 3 and the groove 5 of the other panel 3.
The joint portion 9 is formed by being joined in a state of being inserted therein and fixed by a fixing member such as a blind rivet 6 from the outside of the joint portion. In this way, the ridges 4 formed on one panel 3 are inserted into the concave grooves 5 formed on the other panel 3 and fixed with the blind rivets 6 so that both panels 3 are firmly connected. Can be joined.

Further, for example, a channel-shaped decorative member 10 made of steel is attached to the joint 9 of the panel 3 to cover the head 6a of the blind rivet 6 from the outside (see FIG. 3). Therefore, the head 6a of the blind rivet 6 in the joint portion 9 can be hidden from the outside by the decorative member 10, so that the appearance of the joint between the panels 3 can be improved.

In the joint structure of the panel 3 configured as described above, since the fire-resistant foam packing 8 is interposed at the center of the rock wool 2 at the joint, the surface side of the joint 9 due to a fire or the like (the lower side in the drawing). Is heated, the heat is transferred to the refractory foam packing 8, and the refractory foam packing 8 foams to form a foamed flame retardant, so that the back side (upper side in the drawing) of the joint portion 9. The transfer of heat to the heat exchanger can be reduced. Further, since the refractory foam packing 8 is interposed in the rock wool 2 in an intermittent state, it is possible to suppress the transmission of heat to the back side when the refractory foam packing 8 foams.

In the first embodiment, the case where the fire-resistant foam packing 8 is disposed at the center of the rock wool 2 has been described.
It is not necessarily limited to the central portion of the rock wool 2. For example, as shown in FIG. 4, refractory foam packings 8a and 8b may be interposed at both ends of the joint 9 at the side of the face plate 1 of the rock wool 2. In addition,
In FIG. 4, other parts are the same as those in the first embodiment, and thus the same parts are denoted by the same reference numerals and description thereof will be omitted.

In the joint structure of the panel 3 constructed as described above, since the refractory foam packings 8a and 8b are interposed at both ends of the rock wool 2 on the side of the face plate 1 at the joint portion, the joint portion 9 is formed by a fire or the like. When the front side (lower side in the drawing) of the is heated, the heat is transmitted to the refractory foam packing 8a on the front side, and the refractory foam packing 8a foams to generate a foamed flame retardant, and it takes more time. In addition, since the refractory foam packing 8b on the back side foams to generate a foamed flame retardant, heat transfer to the back side (upper side in the drawing) of the joint portion 9 can be reduced. Further, since the refractory foam packing 8 is interposed in the rock wool 2 in an intermittent state, it is possible to suppress the transmission of heat to the back side when the refractory foam packing 8 foams.

[0020]

Next, a description will be given of a comparative experiment of the fire insulation performance between the joint structure of the present invention and the conventional joint structure. First, Comparative Example 1 of the structure shown in FIG. 7, Comparative Example 2 shown in FIG.
The specimens 1 to 4 of Example 1 of the first embodiment and Example 2 of the second embodiment were each subjected to an area of 500 mm × 500 m.
m, height: Prepare a 75 mm one. Further, Comparative Example 2 (Specimen 2) has a width (B) × a thickness (C) of 55 mm.
A fire-resistant foam packing 8 having a width (B) × thickness (C) of 10 mm × 2 mm is locked in the embodiment (test piece 3). In Example 2 (specimen 4), the refractory foam packings 8a and 8b each having a width (B) × thickness (C) of 10 mm × 2 mm were interposed at the central portion of the wool 2 and the front panel 1 of the panel 3 was used.
The sample placed so as to be in contact with shall be the sample.

As shown in FIG.
A test piece (in the drawing, a test piece) is placed on an angle-shaped support frame 12 protruding from an opposing surface of a channel frame material 11 provided in an opening 21 of a heating furnace 20 of a test apparatus via a nonflammable refractory mat 13. The body 3 is placed, and an angle-shaped pressing member 14 is abutted thereon, and the pressing member 14 is fixed to the channel frame member 11 with a bolt 15, and a test body is set. Then, the lower side of the specimen was heated to about 950 ° C., and the temperature of the temperature measurement on the back side of the joint 9 of the specimen was measured at intervals of about 15 minutes.
In (test sample 1), the result as shown in FIG. 9 was obtained, and in comparative example 2 (test sample 2), the result as shown in FIG. 10 was obtained. Further, in Example 1 (test piece 3), the result as shown in FIG. 11 was obtained, and in Example 2 (test piece 4), the result as shown in FIG. 12 was obtained.

As a result of the above experiment, in the case of Comparative Example 1 (test body 1), the back surface temperature of the joint 9 was all the reference value (260 ° C.).
Exceeded. The cause is presumed to be that the furnace gas flowing from the gap (space) between the refractory core materials (rock wool) in the joint portion 9 consumed the rock wool 2 and further blew out to the back side through the joint portion 9. Is done. In the case of Comparative Example 2 (test body 2), the back surface temperature of the joint portion 9 slightly exceeded the reference value. This is because the fireproof foam packing 8
It is presumed that this is because the temperature at the time of foaming is transmitted to the back side. On the other hand, in Example 1 (test body 3), the back surface temperature of the joint portion 9 did not exceed the reference value, and good results were obtained. Also, in Example 2 (test body 4), the back surface temperature of the joint portion 9 was the same as in Comparative Example 2 described above.
(Specimen 2) was slightly lower than the reference value.

[0023]

As described above, the joint structure of the refractory and heat-insulating panel of the present invention is constructed as described above, so that the following effects can be obtained.

(1) According to the first and second aspects of the invention,
The center of the refractory core at the joint of the refractory insulation panel,
Alternatively, one surface (surface) of the joint is heated by interposing a refractory foam packing at both ends on the surface plate side of the refractory core material, and when the heat is transferred to the refractory foam packing, the refractory foam is formed. Since the packing foams to form a foamed flame retardant, the transfer of heat to the back side at the joint can be reduced. Further, since the refractory foam packing is interposed in the refractory core material in an intermittent state, transmission of heat to the back side when the refractory foam packing foams can be suppressed. Therefore, the heat transfer from one surface (front surface) to the other surface (back surface) of the joint can be reduced as much as possible, and the effect of preventing the spread of fire such as a fire can be obtained. Can be

(2) According to the third aspect of the present invention, a ridge for filling a refractory core material is formed at the joint side end of one of the fireproof and heat insulating panels, and the joint side end of the other fireproof and heat insulating panel. In the part, a surface plate is bent to form a concave groove for inserting the convex ridge, and the convex ridge and the concave groove are fixed by a fixing member, and a decorative part is provided on an outer side of the fixing member. By attaching the member, it is possible to strengthen the joint between the two fireproof and heat insulating panels, to further improve the fireproof and heat insulating properties in addition to the above (1), and to improve the aesthetic appearance. it can.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view showing a first embodiment of a joint structure of a fireproof and heat insulating panel of the present invention.

FIG. 2 is an exploded cross-sectional perspective view showing the fire-resistant and heat-insulating panel in the first embodiment.

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

FIG. 4 is a sectional view showing a second embodiment of the joint structure of the fireproof and heat insulating panel of the present invention.

FIG. 5 is a cross-sectional view taken along line AA of FIG. 2, and is a cross-sectional view showing another embodiment of the refractory foam packing according to the present invention.

FIG. 6 is a schematic cross-sectional view showing a part of a fire resistance test device for joints of a fire-resistant heat insulation panel.

7A and 7B are a cross-sectional view showing a state before joining of a conventional fire-resistant and heat-insulating panel and a sectional view showing a joining state.

FIG. 8 is a cross-sectional view showing another example of a joint structure of a conventional fireproof and heat insulating panel.

FIG. 9 is a graph showing the relationship between temperature and time as a result of a fire resistance test of Comparative Example 1 (test body 1).

FIG. 10 is a graph showing a relationship between temperature and time as a result of a fire resistance test of Comparative Example 2 (test body 2).

FIG. 11 is a graph showing the relationship between temperature and time as a result of a fire resistance test of Example 1 (test body 3).

FIG. 12 is a graph showing the relationship between temperature and time as a result of a fire resistance test of Example 2 (test body 4).

[Description of Signs] 1 surface plate 2 rock wool (fire-resistant core material) 3 fire-resistant heat-insulating panel 4 ridged portion 5 concave groove 6 blind rivet (fixing member) 8, 8a, 8b fire-resistant foam packing 9 joint portion 10 decorative member

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasutaka Suzuki 1-34-1, Kambara, Kambara-cho, Anbara-gun, Shizuoka Prefecture Within Nippon Light Metal Co., Ltd. Group Technology Center (72) Inventor Hiroshi Wakisaka Torahimecho, Higashi-Asai-gun, Shiga Prefecture 500 Nippon Light Metal Co., Ltd. Shiga Plant F-term (reference) 2E001 DD05 DE01 DE04 GA01 GA82 HB02 HF12 JA25 KA05 LA10 4F100 AB03A AB03D AB18A AB18D AC06B AC06E AR00B AR00E AS00A AS00D BA05 BA07 BA10A BA10D DD04B DD04E DD05E DD01D05B DD04E DD01E EH71A EH71D GB90 JJ02 JJ07B JJ07C JJ07E

Claims (3)

[Claims] 1. A joint structure formed by joining fire-resistant heat insulating panels each having a pair of surface plates and a fire-resistant core material interposed between the surface plates, wherein the fire resistance at the joint portion of the fire-resistant heat insulating panels is provided. A joint structure for a fire-resistant insulation panel, wherein a fire-resistant foam packing is interposed in the center of the core material. 2. A joint structure formed by joining fire-resistant and heat-insulating panels each having a pair of surface plates and a fire-resistant core material interposed between the surface plates, wherein the fire-resistance at the joint portion of the fire-resistant and heat-insulating panels is provided. A joint structure for a fire-resistant heat-insulating panel, wherein a fire-resistant foam packing is interposed at both ends of the core material on the side of the surface plate. 3. A joint structure for a fire-resistant and heat-insulating panel according to claim 1 or 2, wherein a ridge portion for filling a fire-resistant core material is formed at an end of one of the fire-resistant and heat-insulating panels on the joining side, and the other fire-resistant and heat-insulating panel. At the joint side end, a surface groove is formed by bending the surface plate to fit the convex ridge, and the convex ridge and the concave groove are fixed with a fixing member, and the outside of the fixing member. A joint structure for a fire-resistant heat-insulating panel, comprising a decorative member attached to one side.