JP2001140384A - Exterior wall structure using metallic exterior wall panel, and metallic exterior wall panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exterior wall structure using a metallic exterior wall panel capable of preventing its heat insulation performance from lowering by bedewing, and a metallic exterior wall panel. SOLUTION: The metallic exterior wall panel 2 has an air layer 14 formed between its heat insulating material 9 and the surface plate portion 8a of a metallic panel 8. The air layer 14 communicates with a space portion 21 between inner and outer joint fillers 18, 19 sealing a vertical joint 20, and communicates with outside air through the space portion 21. A drainage opening 23 is provided in the lower surface of the metallic exterior wall panel 2 so that moisture in the metallic exterior wall panel 2 is discharged out of a horizontal joint 24 through the drainage opening 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an outer wall structure using a metal outer wall panel and a metal outer wall panel.

[0002]

2. Description of the Related Art As an outer wall panel, a metal outer wall panel provided with a heat insulating material on an inner surface side of a face plate portion of a metal panel is sometimes used to form an outer wall of a building or the like using the outer wall panel.

[0003]

However, the metal outer wall panel has a problem in that dew condensation easily occurs inside the panel, and the dew condensation accumulates in the panel, so that the heat insulating performance is easily impaired.

In particular, as a heat insulating material for a metal outer wall panel,
In the case of using a fiber-based heat insulating material such as glass wool and rock wool having high fire resistance, the fiber-based heat insulating material is hygroscopic,
Because of high moisture permeability, condensation easily accumulates, and heat insulation performance is easily impaired.

For this reason, a plastic heat insulating material such as urethane having low moisture permeability is often used as a heat insulating material for a metal outer wall panel. However, a plastic heat insulating material is effective as a countermeasure against dew condensation. This is not always the case, and it is very expensive and fire protection is not high.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide an outer wall structure using a metal outer wall panel and a metal outer wall panel that can prevent a decrease in heat insulation performance due to dew condensation. I do.

[0007]

An object of the present invention is to provide an outer wall structure using a metal outer wall panel provided with a heat insulating material on the inner surface side of a face plate portion of a metal panel. An outer wall using a metal outer wall panel, wherein the heat insulating material is separated from the face plate portion of the metal panel, and an air layer is formed between the heat insulating material and the face plate portion of the metal panel. Solved by the structure.

In this outer wall structure, since an air layer is formed between the heat insulating material and the face plate portion of the metal panel in the metal outer wall panel, dew condensation generated on the inner surface of the face plate portion of the metal panel is absorbed by the heat insulating material. It is hard to be absorbed or not absorbed, so that it is possible to prevent the heat insulation performance of the metal outer wall panel from being reduced due to condensation. Therefore, even when using a plastic heat insulating material such as urethane as the heat insulating material, even when using a fibrous heat insulating material such as glass wool or rock wool, the heat insulation performance of the metal outer wall panel due to dew condensation is reduced. Drop can be prevented.

In this outer wall structure, when the air layer between the heat insulating material and the face plate portion of the metal panel is communicated with the outside air, the air layer between the heat insulating material and the face plate portion of the metal panel is ventilated. The humidity of the space can be kept low, the occurrence of dew condensation in the metal outer wall panel can be effectively suppressed, and the deterioration of the heat insulation performance due to the dew condensation can be more effectively prevented. .

In addition, an air layer between the heat insulating material and the face plate of the metal panel is communicated with a space between the inner and outer joints for sealing the vertical joints, and the space between the joints communicates with the outside air. If it is, not only can the air layer between the heat insulating material and the face plate portion of the metal panel be ventilated, but the intrusion of rainwater into the metal outer wall panel can be prevented by the external joint material, Moreover, it is possible to prevent the moisture in the air layer between the heat insulating material and the face plate portion of the metal panel from entering the indoor side by the internal joint material.

In the case where a drainage opening is provided on the lower surface of the metal outer wall panel, moisture in the outer wall panel is discharged from the side joint through the drainage opening. In this way, it is possible to prevent the dew condensation water dripping downward on the inner surface of the face plate of the metal panel from being discharged to the outside through the drainage opening, and to prevent the dew condensation water from being sucked into the heat insulating material of the metal outer wall panel. In addition, the moisture absorbed by the heat insulating material can be discharged to the outside through the drainage opening, and furthermore, the rainwater or the like that has entered the outer wall panel can be discharged to the outside. It is possible to effectively prevent a decrease in the heat insulating performance of the metal outer wall panel due to the inclusion. Furthermore, since the drainage opening is provided on the lower surface of the metal outer wall panel and is present in the horizontal joint, external rainwater or the like enters the metal outer wall panel through the opening. It is possible to prevent rainwater and the like, and even if rainwater or the like intrudes, the intruded rainwater can be discharged to the outside.

When the heat insulating material of the metal outer wall panel is made of a fibrous heat insulating material having fire resistance, as described above, it is possible to prevent the heat insulating performance from being degraded due to dew condensation. Cost can be reduced.

[0013]

Next, embodiments of the present invention will be described with reference to the drawings.

In the outer wall structure of the embodiment shown in FIGS. 1 to 5, 1 is a pillar of a building, 2 is a metal outer wall panel, 3 is a panel frame, 4 is an interior wall panel, and 5 is a bar.
The column 1 is made of a channel steel with a lip, and is installed with the opening between the lips facing the indoor side. Panel frame 3
Is made of a channel steel, is installed between the columns 1 and 1, and is joined and integrated with the column 1. A fibrous heat insulating material 6 such as glass wool is set in the pillar 1 or the panel frame 3. The metal outer wall panel 2 is installed so as to protrude outward from the position of the pillar 1, and the brackets 7, 7
To be attached to the panel frame 3.

The metal outer wall panel 2 is provided with a heat insulating material 9 on the inner surface side of the rectangular face plate portion 8a of the metal panel 8.

On the outer surface side of the face plate portion 8a of the metal panel 8,
The exterior wall decorations 10 are attached and hidden so that the metal surface is not exposed to the outside. The upper, lower, left and right side edge portions 8b, 8b, 8b, 8b are formed on the upper, lower, left and right side edge portions of the face plate portion 8a of the metal panel 8 so as to be bent indoors. The upper, lower, left and right edge plate portions 8 are provided.
A heat insulating material 9 is held in the interior surrounded by b, 8b, 8c, and 8d. Further bent portions 11, 11 for holding the heat insulating material 9 are provided at the tips of the upper and lower edge plate portions 8c, 8d.

The heat insulating material 9 is made of a fire-resistant fibrous heat insulating material such as glass wool or rock wool. On the inner surface of the face plate portion 8a of the metal panel 8, surrounding edge plate portions 8b, 8b,
A frame 12 is provided for partitioning the interior surrounded by 8c, 8d into a communicating state in the left-right direction, and the heat insulating material 9 is accommodated in each part partitioned by the left and right edge plate portions 8b, 8b and the frame 12. Have been.

A spacer 13 is provided between the heat insulating material 9 and the face plate portion 8a of the metal panel 8. The spacer 13 separates the heat insulating material 9 and the face plate portion 8a from each other. The air layer 14 is formed between the air layer 14 and the face plate 8a.

Also, as shown in FIGS. 3 and 5, the left and right edge plates 8b, 8b of the metal panel are bent so that the half 15 on the outdoor side is smaller than the half 16 on the indoor side. An outwardly projecting plate portion 17 is formed between the outdoor side half portion 15 and the indoor side half portion 16 so as to face the indoor side. A dry-type external joint material 18 for a primary seal is attached to the outdoor half portion 15, and a secondary seal material 18 for the secondary seal is attached to the indoor half portion 16 at a distance from the external joint material 18. A dry type joint material 19 is attached, and a vertical joint 20 between the metal outer wall panels 2 adjacent on the left and right is double-sealed by these joint materials 18, 19. The space 21 formed between the inner and outer joint members 18 and 19 of the vertical joint 20 is open to the outdoors under the eaves and on the foundation so as to have an equal pressure with the outside air, and communicates with the outside air.

The plate 17 facing the indoor side formed on the left and right edge plate portions 8b, 8b is provided with a ventilation opening 2a.
2, the air layer 14 between the heat insulating material 9 and the face plate 8a of the metal panel 8 is formed through the ventilation opening 22.
The space portion 21 between the inner and outer joint members 18 and 19 communicates with each other. Thus, the air layer 14 is communicated with the outside.

As described above, in the left and right edge plate portions 8b, 8b, the outdoor half portion 15 is made to protrude more outward than the indoor half portion 16 so that the outdoor half portion 15 and the indoor half portion 15 are connected to each other. A plate portion 17 facing the indoor side is formed between the inner half portion 16 and the ventilation hole 22 is provided in the plate portion 17, so that the inner and outer joint materials 18 are moved beyond the outer joint material 18. , 19
The rainwater that has entered the space 21 between the openings 21
Through the outer wall panel 2 made of metal.

As shown in FIGS. 4 and 5, a drainage opening 23 is provided in the lower edge plate 8d of the metal panel 8. The position of the drainage opening 23 is set so as to be separated from the heat insulating material 9 to the outdoor side and to face the inside of the air layer 14 between the face plate portion 8a and the heat insulating material 9. Is open to the outside through the horizontal joint 24 between the metal outer wall panels 2 and 2. A strip-shaped joint type joint material 25 is set in the horizontal joint 24 between the upper and lower metal outer wall panels 2 and 2 at a position closer to the indoor side than the drainage opening 23. Between the metal outer wall panels 2 is sealed.

In the above outer wall structure, the metal outer wall panel 2
Formed on the inner surface of the face plate portion 8a is not absorbed by the heat insulating material 9 due to the presence of the air layer 14, and the face plate portion 8a
a hangs down from the inner surface of a. Therefore, the heat insulating material 9
Can be prevented from being moistened or wet by dew condensation, and the heat insulation performance of the metal outer wall panel can be prevented from deteriorating due to dew condensation.

Moreover, the heat insulating material 9 and the face plate portion 8 of the metal panel are provided.
a between the air layer 14 and the outside air,
It is ventilated by the ventilation, so that the humidity of the air layer 14 can be kept low, and the occurrence of dew condensation on the inner surface of the face plate portion 8a of the metal panel 8 can be effectively suppressed. It can be prevented more effectively.

The air layer 14 is communicated with the outside air by communicating with the space 21 between the inner and outer joint members 18 and 19 for sealing the vertical joint 20. 14 can be prevented from invading by rainwater and the like by the external joint material 18 even if the air layer 14 communicates with the outside air.
The inside joint material 19 can prevent the moisture in the inside 4 from entering the indoor side.

Further, since the drainage opening 23 is provided at the lower portion of the panel, the dew water dripping downward on the inner surface of the face plate portion 8a can be discharged to the outside through the drainage opening 23. And even if the heat insulating material 9 absorbs moisture,
The water can be discharged to the outside through the drainage opening 23, and is not limited thereto.
Water generated inside for some reason can be discharged to the outside through the drainage opening 23.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various changes can be made without departing from the spirit of the invention. For example, in the above-described embodiment, a case where a fiber-based heat insulator is used as the heat insulator constituting the metal outer wall panel is shown, but a plastic heat insulator such as urethane may be used,
Other heat insulating materials may be used. There is no particular limitation on the spacer that forms the air layer between the face plate portion 8a of the metal panel 8 and the heat insulating material 9, and the point is that the face plate portion 8a and the heat insulating material 9 are separated from each other so that air is What is necessary is just to form a layer. When the air layer 14 communicates with the outside air, various configurations may be adopted as the configuration for that. In addition, it is needless to say that the term metal outer wall panel is used to include all outer wall panels in which a heat insulating material is provided on the inner surface side of the metal face plate portion. There are no special restrictions,
It may be an outer wall panel made of various metals such as steel and aluminum.

[0028]

As described above, the present invention is as described above. Therefore, in an outer wall structure employing a metal outer wall panel, it is possible to prevent a decrease in heat insulation performance due to dew condensation.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of an outer wall structure according to an embodiment.

FIG. 2 is a vertical sectional view of the same.

FIG. 3 is an enlarged horizontal cross-sectional view showing the vicinity of a vertical joint of metal outer wall panels adjacent to each other on the left and right.

FIG. 4 is an enlarged vertical cross-sectional view showing the vicinity of a horizontal joint of metal outer wall panels vertically adjacent to each other.

FIG. 5 is a perspective view of the metal panel in the metal outer wall panel.

[Explanation of symbols]

 2 ... Metal outer wall panel 8 ... Metal panel 8a ... Face plate part 9 ... Heat insulation material 14 ... Air layer 18 ... Outer joint filler 19 ... Inner joint filler 20 ... Vertical joint 21 ... Space 22 ... Venting opening 23 ... Drainage Opening 24 ... side joint

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) E04B 1/70 E04B 1/70 D 1/80 1/80 S (72) Inventor Kenji Hirosawa Kita-ku, Osaka-shi, Osaka 3-5 Umeda Daiwa House Industry Co., Ltd. F-term (reference) 2E001 DA01 DA02 DA06 DB05 DD01 FA04 FA52 FA53 FA64 GA05 GA12 GA42 GA44 GA45 GA51 HA32 HD03 HF02 KA01 KA03 LA11 MA02 MA04 MA06 NA07 ND14 ND15 2E002 EA08 FA02 FA06 FB01 FB08 FB10 FB16 FB24 GA16 HA00 HA02 HA03 HB02 HB16 MA21 MA26 MA27 MA28 MA31 MA32

Claims (6)

[Claims] 1. An outer wall structure comprising a metal outer wall panel provided with a heat insulating material on an inner surface side of a face plate portion of a metal panel, wherein the metal outer wall panel has a heat insulating material of the metal panel. An outer wall structure using a metal outer wall panel, wherein an air layer is formed between the heat insulating material and the face plate portion of the metal panel, being separated from the face plate portion. 2. An outer wall structure using a metal outer wall panel according to claim 1, wherein an air layer between the heat insulating material and a face plate portion of the metal panel communicates with outside air. 3. An air layer between the heat insulating material and the face plate of the metal panel is communicated with a space between inner and outer joints for sealing vertical joints, and the space between the joints is connected to outside air. An outer wall structure using the metal outer wall panel according to claim 2, which is in communication. 4. A drain opening is provided on a lower surface of the metal outer wall panel, and moisture in the outer wall panel is discharged outside from the horizontal joint through the drain opening. Item 4. An outer wall structure using the metal outer wall panel according to any one of Items 1 to 3. 5. The outer wall structure using a metal outer wall panel according to claim 1, wherein the heat insulating material of the metal outer wall panel is made of a fire-resistant fibrous heat insulating material. 6. A metal outer wall panel in which a heat insulating material is provided on an inner surface side of a face plate portion of a metal panel, wherein the heat insulating material is separated from the face plate portion of the metal panel, and the heat insulating material is separated from the face plate portion of the metal panel. A metal outer wall panel having an air layer formed therebetween.