JPH1122063A - Device for interconnecting fireproof heat insulating panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent bedewing outside an appliance when a fireproof, heat- insulating panel is used where inside temperature should be kept at or below room temperature, as in a refrigerator, and to allow the panel to pass a surface test for certification as quasi-incombustible material. SOLUTION: Two fireproof, heat insulating panels to be interconnected are formed by packing a heat insulating material 5 made of synthetic resin foam into a hollow part surrounded by two longitudinally-spaced, opposite metallic surface plates 1, 2 and by frame members 3, 4 each made of a synthetic resin, which are placed between the sides of the metallic surface plates. At least either recesses 3a or projections 4a extending in the longitudinal direction of the frame members 3, 4 to be fitted together are formed in the adjacent frame members 3, 4, and metallic reinforcing cores 6, 7 are buried in the frame members 3, 4, and a gap such that heat does not conduct from a rear end to a front end is maintained between the ends of each metallic reinforcing core 6, 7 and the metallic surface plates 1, 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for interconnecting fireproof and heat insulating panels used in a cleanroom or a food processing room.

[0002]

2. Description of the Related Art As a conventional apparatus for interconnecting fireproof and heat insulating panels, two metal surface plates opposed to each other at an interval in front and rear and two vertical and horizontal metal plates arranged between each side of both surface plates. A recessed strip extending in the length direction is formed on one of adjacent frame members of two heat insulation panels formed by injecting and foaming a foamed resin insulation material into a hollow portion surrounded by each metal frame member. ,
On the other hand, a ridge extending in the length direction is formed, and there are some in which the ridge and the ridge are fitted to each other to connect the heat insulating panels to each other.

Further, four projecting walls extending in the longitudinal direction of the frame member are formed on both adjacent frame members of the two heat insulating panels at an interval in the front-rear direction, and the frame member is interposed between the two frame members. A cross-shaped metal connecting member having a cross-section cross-shaped portion provided with a longitudinally extending plate-shaped portion extending in the length direction and a frame member projecting from the left surface and the right surface of the plate-shaped portion extending in the length direction. The protruding portions of the connecting member are fitted between the two central protruding walls of the frame members, and the front and rear end left and right surfaces of the connecting member abut against the front ends of the front and rear protruding walls, respectively. Are connected.

[0004]

As described above, if the frame member and the connecting member are made of metal, the joints to which the heat insulating panels are connected have poor heat insulation properties, and the interior of the refrigerator or the like is kept at a room temperature or lower. If the connecting device for heat insulating panels is used when necessary, there is a problem that dew condensation occurs on the outside of the refrigerator.

[0005] Therefore, it is conceivable that the frame member and the connecting member are made of resin having excellent heat insulating properties. In this case, at high temperatures, the frame member and the connecting member are deformed to obtain a quasi-noncombustible material. There is a problem that the surface test cannot be passed.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to obtain a certified non-combustible material without dew condensation on the outside of the refrigerator even when used in a refrigerator or the like where the inside temperature needs to be lower than room temperature. It is an object of the present invention to provide a device for interconnecting fireproof and insulated panels which can pass a surface test.

[0007]

According to the present invention, there is provided a device for interconnecting fire-insulating panels, wherein two fire-insulating panels connected to each other are connected to two metal surface plates facing each other at an interval in front and rear. A frame formed by filling a hollow portion surrounded by a synthetic resin frame member disposed between each side of the metal surface plate with a foamed synthetic resin heat insulating material, and mutually fitted to the frame member. At least one of a concave stripe and a convex stripe extending in the longitudinal direction of the member is formed, and metal reinforcing cores are respectively embedded in adjacent frame members, and both ends of the metal reinforcing core and a metal surface plate are formed. The distance between the rear end and the front end is such that heat is not transmitted.

Further, four projecting walls extending in the longitudinal direction of the frame member are formed on both adjacent frame members, and a front-rear plate-like portion extending in the longitudinal direction of the frame member is provided between the two frame members. ,
A connecting member having a cross-shaped cross section having a projecting portion extending in the longitudinal direction of the frame member protruding from the left surface and the right surface of the plate-shaped portion, and two central protruding walls of the frame members of both frame members; The front and rear end left and right surfaces of the connecting member are fitted in between, and the front and rear end left and right surfaces of the connecting member abut against the front ends of the front and rear end protruding walls, respectively, so that the fireproof and heat insulating panels are connected to each other. In some cases, there is a gap between the ends of the metal reinforcing core and the metal surface plate, which is shorter than the thickness of the heat insulating panel, so that heat is not transmitted from the rear end to the front end.

Further, in the connecting device, a metal reinforcing core is embedded in adjacent frame members, and heat is applied between both ends of the metal reinforcing core and the metal surface plate from the rear end to the front end. May not be transmitted.

[0010] In all of the above interconnecting devices for fireproof and heat insulating panels, it is desirable that the width of the joint formed by the connected fireproof and heat insulating panels is 5 mm or less.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of a device for interconnecting fire insulating panels according to a first embodiment of the present invention.
In the following description, “before” refers to the bottom of FIG. 1 and “back” refers to the top of FIG.

The heat insulation panel is composed of two metal surface plates (1) and (2) opposed to each other at an interval in front and rear, and left and right synthetic resin frame members ( 3) A hollow portion surrounded by (4) and upper and lower synthetic resin frame members (not shown) is filled with a foamed resin heat insulating material (5).

The surface plates (1) and (2) may be of any kind as long as they are nonflammable general rules, individually qualified materials, or the like. For example, it is a colored galvanized steel sheet (Non-combustible No. 1041). The heat insulating material (5) may be any material that can pass the quasi-noncombustible material test. For example, there are isocyanurate foam, phenol foam and urethane foam mixed with inorganic powder.

The left frame member (3) is a frame member opened rightward.
(3) It has a concave stripe (3a) extending in the longitudinal direction. Concave strip (3
Protrusions (3b) protruding inward of the groove and protrusions (3c) protruding outward of the groove in the middle of the front and rear side walls forming a) in the left-right direction, respectively.
Are formed. Further, the left ends of the front and rear side walls of the concave streak (3a) are each turned toward the outside of the groove. Then, the left ends of the front and rear surface plates (1) and (2) are folded back so as to contact the left inner surfaces of the front and rear side walls of the concave streak (3a).

The right frame member (4) is formed in a longitudinally extending ridge (4a) protruding leftward, and at the front and rear ends of the ridge (4a) to be folded forward and backward, respectively. It has a plate-shaped portion (4b). A rightwardly projecting plate-like portion (4c) is formed in the middle of the plate-like portion (4b) in the front-rear direction. The right end of the front right protruding plate (4c) is folded forward, and the right end of the rear upper right protruding plate (4c) is folded back. Then, the right ends of the front and rear surface plates (1) and (2) are folded back so as to come into contact with the inner surface of the right protruding plate-like portion (4c).

Metal cores (6) and (7) are embedded in the frame members (3) and (4), respectively. The core material (6) embedded in the left frame member (3) runs along the concave streak (3a) and has a gap between the front and rear ends of the core material (1) and the metal surface plates (1) and (2). (L1) is open, no heat is directly transmitted between the metal surface plates (1) and (2) and the metal core (6), and no heat is transmitted from the rear end to the front end of the heat insulating panel It has been made like that.

The core material (7) embedded in the right frame member (4) is along the ridge (4a), and the front and rear ends thereof are folded back and forth, so that the center part of the plate-shaped portion (4b) The front end and the rear end are located respectively. In this heartwood (7), the heartwood (6)
Similarly, a gap (L1) is provided between the front and rear ends and the metal surface plates (1) and (2) to prevent heat from being transmitted from the rear end to the front end of the heat insulating panel. ing.

In this interconnecting device for fireproof and heat insulating panels, the core members (6) and (7) are embedded, so that the frame members (3) and (4) do not deform even at high temperatures, and the gap between joints changes. Without doing so, excellent heat insulating properties can be obtained. In addition, heartwood
(6) The thickness of (7) is preferably 0.5 mm or more.

It is desirable that the length of the interval (L1) be 3 mm or more. However, if the length of the interval (L1) is too long, the front and rear lengths of the cores (6) and (7) become short, Since the frame members (3) and (4) may be deformed, the length of the interval (L1) may be determined in consideration of this.

The joint width at the joint of the heat insulating panel
(H1) may be 5 mm or less, preferably 1 to 5 mm.
The most excellent heat insulating property is obtained when the joint width is set to 0 mm. However, in this case, the thermal expansion of the heat insulating panel cannot be absorbed. On the other hand, if an excessively large joint width is allowed, the heat insulating property is significantly reduced. In particular, if the joint width exceeds 5 mm, the flame retardant class 2 test (JIS A 1321) as shown in FIG.
Because it will not be able to pass. Joint width 5
If it is less than mm, both the afterflame time and the smoke generation coefficient (CA) are within the acceptable range. In particular, if the joint width is kept between 1 and 3 mm, favorable results can be obtained in both the smoke generation coefficient and the afterflame time.

FIG. 3 is a cross-sectional view of a device for interconnecting fireproof and heat insulating panels according to a second embodiment of the present invention.
In the following description, the same components and portions as those described in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

The heat insulating panel has synthetic resin frame members (12) and (11) fixed to left and right ends thereof, and both frame members (12) and (11) have a cross-shaped metal connecting member (13). ).

The left and right frame members (12) and (11) have different shapes in the left and right directions, but have the same shape, and the right frame member (11) will be described below.

The right frame member (11) has a strip-shaped base (11a),
The base (11a) includes four protruding walls (11b) and (11c) formed at an interval in the front and rear. The base (11a) is bent at a portion where the protruding wall (11c) is formed in order to increase the strength. A groove is formed by the two projecting walls (11b) located at the center in the front-rear direction of the base (11a). The front end of the protruding wall (11c) located at the front and rear ends is enlarged forward and backward. The connecting member (13)
A cross-section substantially cross-shaped, the length in the front-rear direction is shorter than the thickness of the heat insulating panel, and a strip-shaped portion (13a) having the same length as the frame member;
A protruding portion (1) extending in the length direction of the connecting member protruding leftward and rightward from the center in the front-rear direction of the strip-shaped portion (13a).
3b). The thickness of the front and rear ends of the strip-shaped portion (13a) is made thicker than the thickness of other portions, and this portion is formed as a thick portion (13c), and the thickness of the thick portion (13c) is increased. The joint width (H2) is maintained at a predetermined value by adjusting the thickness. The tip of the overhang (13b) has a semicircular cross section. In the center of each overhang portion (13b) in the left-right direction, a ridge projecting forward and backward is formed.

In this interconnecting device for fireproof and heat insulating panels, each projecting portion (13b) has a groove-like shape formed by two projecting walls (11b) (12b) of each frame member (11) (12). And the thick portions (13c) are sandwiched by the protruding walls (11c) and (12b) to connect the fireproof and heat insulating panels to each other.

In this connection device, excellent heat insulation can be obtained because the shape of the frame members (11) and (12) is maintained by the metal connection member (13) even at a high temperature. In addition, a gap (L2) is provided between the front and rear ends of the connecting member (13) and the metal surface plates (1) and (2) so that heat is not transmitted from the rear end of the heat insulating panel to the front end. Has been made. The distance (L2) between the front and rear surface plates (1) (2) and the connecting member (13) is desirably 3 mm or more, but if the distance (L2) is too large, the frame members (11) (12) ) May be deformed, and the length of the connecting member (13) may be determined in consideration of this.
In this connection device, the joint width (H2) at the joint portion of the heat insulating panel may be 5 mm or less, preferably 1 to 5 mm, more preferably 1 to 3 mm.

FIG. 4 is a cross-sectional view of a device for interconnecting fireproof and heat insulating panels according to a third embodiment of the present invention.
In this connecting device, metal reinforcing cores (14) and (15) are embedded in the frame members (11) and (12), respectively. Reinforcement heartwood (14)
(15) has different shapes in the left and right directions but has the same shape, and the reinforcing core (14) embedded in the right frame member (11) will be described below.

The core member (14) is bent along the base (11a) of the frame member (11) and extends into each protruding wall (11b) (11c).

Also in the core material (14), an interval (L3) is provided between the front and rear ends of the core material (1) and the metal surface plates (1) and (2). The heat is not transmitted. The joint width (H3) is set to be equal to or less than 5 mm as in the connection device of the other embodiments.

[0031]

In the apparatus for interconnecting heat insulating panels according to the present invention, metal reinforcing cores are embedded in adjacent synthetic resin frame members, and both ends of the metal reinforcing core and the metal surface plate. There is an interval between the rear end and the front end where heat is not transmitted, so it has excellent heat insulation properties. Even when used, dew condensation does not occur on the outside of the refrigerator. In addition, even at high temperatures, the frame member is not deformed, and can pass a surface test for obtaining certification of a quasi-noncombustible material.

Also, four projecting walls extending in the longitudinal direction of the frame member are formed on both adjacent frame members, and a front-rear plate-like portion extending in the longitudinal direction of the frame member is provided between the two frame members. ,
A connecting member having a cross-shaped cross section having a projecting portion extending in the longitudinal direction of the frame member protruding from the left surface and the right surface of the plate-shaped portion, and two central protruding walls of the frame members of both frame members; The front and rear end left and right surfaces of the connecting member are fitted in between, and the front and rear end left and right surfaces of the connecting member abut against the front ends of the front and rear end protruding walls, respectively, so that the fireproof and heat insulating panels are connected to each other. The gap between both ends of the metal reinforcement core and the metal surface plate is kept shorter than the thickness of the heat insulation panel, so that heat is not transmitted from the rear end to the front end. When the inside needs to be kept at room temperature or lower, such as a refrigerator, dew condensation does not occur on the outside of the refrigerator even when this heat insulating panel interconnecting device is used. Besides,
Even at a high temperature, the frame member is not deformed and can pass a surface test for obtaining certification of a quasi-noncombustible material.

A metal reinforcing core is embedded in each of the frame members, and a space is provided between both ends of the metal reinforcing core and the metal surface plate so that heat is not transmitted from the rear end to the front end. Then, the deformation of the frame member can be further reduced.

Further, when the joint width is set to 5 mm or less, the flame retardant 2
You can pass the class test without fail.

[0035]

[Brief description of the drawings]

[0036]

FIG. 1 is a horizontal sectional view of a connecting device for interconnecting fireproof and heat insulating panels according to a first embodiment of the present invention.

In the connecting device of the heat insulating panels, when the joint width of the heat insulating panel is changed, JIS A 1321 flame retardant 2 is used.
It shows the results of the class test.

[0038]

FIG. 3 is a horizontal cross-sectional view of a connecting device for interconnecting fireproof and heat insulating panels according to a second embodiment of the present invention.

[0039]

FIG. 4 is a horizontal cross-sectional view of a connection device for interconnecting fireproof and heat insulating panels according to a third embodiment of the present invention.

[0040]

[Explanation of symbols]

 (1) (2) Metal surface plate (3) (4) Frame member (3a) Concave strip (4a) Convex strip (5) Insulation made of synthetic resin foam (6) (7) Metal reinforcing core (11) (12) Frame material (11b) (11c) (12b) (12c) Projecting wall (13) Metal connecting member (13a) Base (13b) Overhang (14) (15) Metal reinforcing core (H1) ( H2) (H3) Joint width (L1) (L2) (L3) Interval

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[Procedure amendment]

[Submission date] August 29, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a connecting device for interconnecting fireproof and heat insulating panels according to a first embodiment of the present invention.

FIG. 2 shows the results of a JIS A 1321 flame-retardant class 2 test when the joint width of the heat insulating panel was changed in the heat insulating panel interconnecting device.

FIG. 3 is a horizontal cross-sectional view of a connecting device for interconnecting fireproof and heat insulating panels according to a second embodiment of the present invention.

FIG. 4 is a horizontal cross-sectional view of a connection device for interconnecting fireproof and heat insulating panels according to a third embodiment of the present invention.

[Explanation of symbols] (1) (2) Metal surface plate (3) (4) Frame member (3a) Concave strip (4a) Convex strip (5) Thermal insulation made of foam synthetic resin (6) (7) Metal Reinforcement core material (11) (12) Frame material (11b) (11c) (12b) (12c) Projecting wall (13) Metal connecting member (13a) Base (13b) Overhang (14) (15) Metal reinforcement Heartwood (H1) (H2) (H3) Joint width (L1) (L2) (L3) Interval

Claims (4)

[Claims] 1. A synthetic resin in which two fireproof and heat-insulating panels connected to each other are arranged between two opposing metal front plates and each side of both metal front plates at an interval in front and rear. Formed by being filled with a foamed synthetic resin heat insulating material in the hollow portion surrounded by the frame member, and in both adjacent frame members,
At least one of a concave streak and a convex streak extending in the length direction of the frame member to be fitted to each other is formed, and a metal reinforcing core is embedded in an adjacent frame member, and the metal reinforcing core is A device for interconnecting fire-insulating panels between both ends and a metal surface plate, where there is a gap between the rear end and the front end where heat is not transmitted. 2. A synthetic resin in which two fireproof and heat insulating panels connected to each other are arranged between two opposing metal front plates and each side of both metal front plates at an interval in front and rear. Four projecting walls formed by filling a hollow portion surrounded by a frame member with a foamed resin insulation material, and extending in the longitudinal direction of the frame member at both front and rear sides with an interval between each other. Formed between the two frame members, a longitudinally extending plate-shaped portion extending in the longitudinal direction of the frame member, and a projecting portion extending in the longitudinal direction of the frame member protruding from the left and right surfaces of the plate-shaped portion. A metal connecting member having a cross-shaped cross section is disposed, and the projecting portions of the connecting member are respectively fitted between two projecting walls at the center of both frame members, and the front and rear ends of the connecting member have left and right front and rear ends, respectively. The fireproof and heat-insulating panels are connected to each other by contacting the tip of the protruding wall, and the connecting portion The length of the material in the front-rear direction is shorter than the thickness of the heat-insulating panel, and there is a gap between both ends of the metal connecting member and the metal surface plate so that heat is not transmitted from the rear end to the front end. Panel interconnection device. 3. A metal reinforcing core is provided on adjacent frame members.
3. The interconnection between fireproof and heat insulating panels according to claim 2, wherein a gap is provided between both ends of the metal reinforcing core material and the metal surface plate so that heat is not transmitted from the rear end to the front end. apparatus. 4. The apparatus for interconnecting fire-insulating panels according to claim 1, wherein the joint formed by the two fire-insulating panels connected to each other has a width of 5 mm or less.