JPS5894541A - Wall, roof and floor structure having excellent insulating wall - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention uses expanded materials for columns, studs, beams, etc., and forms a heat insulating material layer such as glass wool, rock wool, or styrofoam in the middle of both the inner and outer layers. This invention relates to a wall, roof or floor structure that has an excellent thermal insulation effect for interior and exterior use.

In recent years, the issue of energy conservation has been raised in buildings such as steel prefabricated structures, but in this case, if the outer wall is flj#/c, the outside air will be below σ℃ in winter, and on the other hand, The indoor temperature is about 20°C. In cold regions, the outside air temperature can drop to between 1.0°C and -20°C, and the difference between outside air and indoor temperatures of 11M often exceeds 3♂. In such a case, 50~60'1i81f&
Under normal humidity conditions, interior walls can experience condensation problems, with water dripping along posts and studs.

When the outside air temperature is low and the indoor temperature is also relatively low, internal nails or screws will occur along posts and studs. In the case of B misalignment, a possible cause is that for example, full-web C-beams or channel materials are used for columns, middle columns, and beams, which are one of the structural elements of walls, etc. This is because the amount of heat that escapes through the material is considerably higher than the amount of heat that escapes from other parts. By providing a heat insulating layer at the junction between the inner wall and outer wall of the trench to prevent air circulation, the heat insulation effect of that area can be improved, but
On the other hand, the proportion of heat escaping from steel columns, studs, or beams made of full-web material is relatively large compared to the skin part with a heat insulating layer. This phenomenon becomes more pronounced as better insulation materials are used, causing them to become unbalanced with other wall areas and causing condensation to concentrate on the skin along columns, studs, or beams. Therefore, it is said that the problem of dew condensation cannot be prevented with steel frame prefabricated or precast structures.

%, buildings with steel prefabricated structures are considered undesirable in cold regions.

The present invention was developed in view of the above circumstances, and its purpose is to provide walls with excellent thermal insulation effects.Another purpose of the present invention is to provide walls with excellent thermal insulation effects, and another purpose of the present invention is to provide walls with excellent thermal insulation effects. However, the objective is to provide a wall, roof, and floor structure in a steel frame pre-ab construction etc. that does not cause dew condensation on the next mounting surface along the studs.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

First, a typical example of an expanded material having flanges on both sides is shown in Fig. 1A and Fig. ICl3.

Generally, in the expanded material 1, the width of the lattice element 2 forming a lattice on the abdomen thereof is narrow, and the lattice element 2 has a slope with respect to the flanges 4.4 on both sides, so that a heat conduction path is formed. The unit length of the expanded material is longer than the length between the two flanges (flange width), and the cross-sectional area of the heat conduction path is several times smaller than that of the full web material. It has been experimentally known that the amount of heat Q- that passes per hit has the following relationship with the amount of heat Qf that passes through a full web material of the same length.

Q-1 αo 82 Qf (1) That is,
This corresponds to &211 of the amount of heat passing through the full web material. In other words, the expanded material has about 12 times more thermal insulation properties as a single product than the full web material.

Therefore, by replacing expanded structural materials with conventional full web structural materials, columns and studs t7t were used for walls such as beams,
Therefore, attention should be paid to the design and floor structure.The relational expression (1) between Q- and Qf in ml is shown in Fig. 2.
It is obtained from the steady temperature distribution map. In other words, in Figure 2, one side of the expanded material is set at 100°C, and the other side B
Isotherms at a constant temperature of t-o<0>C are shown. (Point 1s
is an isotherm line for each '/100 of the temperature difference between both ends. ) The following equation can be obtained from this steady temperature distribution.

t −λ /ds−Q−・S (厘)
t However, λI thermal conductivity, t : temperature gradient, Q#1 passing heat amount, and SI cross-sectional area.

By inserting a predetermined value into this equation, the amount of heat passed through the expanded material Q# is calculated.

Similarly, from the steady temperature distribution of the full web, the above equation (1)
K @The corresponding formula is obtained, and the amount of heat passing through the full web material Qf
is calculated.

Figure g3 KFi expanded material 1 is used as a stud, and the inner wall 6
Insert an appropriate heat insulating material between the outer wall 10 and 1't! lI
! The structure is shown as an example of the invention. In the figure, an inner wall member 6 such as plasterboard is fixed to the outer surface of the m flanges of the stud 1, and plywood or tungsten, which is one of the outer wall members, is fixed to the outer surface of the other flange of the stud 1. Gypsum board 8 etc. can be fixed. Then, another layer 10 of mortar or the like is applied to the outside of this plywood or plasterboard 8 or the like to form an outer wall layer 12. A space corresponding to the width of the flange of the expanded structural member is created between the inner wall 6 and the outer wall 12 thus formed, and a heat insulating material such as glass wool, rock wool, or styrofoam is used within this space. 14 will be inserted. It has been confirmed that when this heat insulating material 14 is installed so as to fill the space between the inner wall 6 and the outer wall 12 as shown in the figure, air circulation is sufficiently prevented and a better heat insulating effect can be obtained. There is.

Thus, the wall, roof, and floor structures of the present invention are as described above.
The insulation property of the T-expanded material itself and the addition of insulation material make it 7ti! A synergistic effect with the heat insulation structure shown in Figure 3 results in a sufficiently excellent thermal insulation effect. As a result, even under conditions where the humidity is 50 to 60g and the outside air temperature is 30 degrees or more lower than the room temperature of around 20 degrees Celsius, the indoor surface can be maintained. i! 111m can be fundamentally prevented from occurring.

As described above, the following experiment was conducted in order to demonstrate the excellent thermal insulation effect in the wall, wall, or floor structure of the present invention.

In other words, as shown in Fig. 4, the columns and studs tx to be used are determined based on the differences in vermilion materials and the presence or absence of insulation materials, and are used to prepare insulated walls, roofs, or floor structures. , measure the wall temperature relationship for each structure, that is, the change in the indoor wall temperature with respect to the outside air temperature,
This is an experiment to compare the results.

In the table of FIG. 4, the walls, roofs, and floor structures of the dog type are shown in cross section, and those that differ from the structure of the present invention are indicated by the symbol C-1 in the table, and the rest These three types are used for comparison and are t-structures.

FIG. 5A is a graph created by measuring changes in indoor wall surface temperature with respect to outside air temperature in areas not affected by studs for each structure shown in the table of FIG. 4. From this graph, we can see that wood and conventional full-web light groove steel (however, the JIS standard does not include light groove steel as shown).
The cross section shown was prepared for comparison with wood studs.

) and expanded material studs, the three types of structures have a common feature that due to the presence of the insulation layer 14, even if the outside temperature is around -10℃, the temperature is higher than the dew point temperature (1mFit without condensation). It can be seen that K is maintained.

The KSB diagram also shows the interior side lll1iaIf of the part affected by the studs for each structure shown in the table of Figure 4.
This is a graph regarding changes in .

In this case, it is clear from the KSB diagram that the temperature reduction significantly differs depending on the material of the studs, as well as the presence or absence of the heat insulating material layer 14. For example, in the case of a FE, B-1 wall structure using full-web light groove steel for the studs, even if the insulation layer 14 is formed, the indoor wall surface temperature is significantly affected by the outside air temperature, and the outside air temperature The temperature drops below the dew point temperature at around -5℃. On the other hand, in the case of the C-1 wall structure, which is the structure of the present invention, the studs are made of wood, and the indoor wall surface is not affected much by the outside temperature, almost the same as the IP-A-Rin wall structure. The temperature is maintained at a preferred temperature above the dew point temperature.

From the above results, it will be clearly understood that the walls and roofs according to the present invention are excellent in terms of heat insulation effect for floor structures.

As explained above, the wall, roof, and floor structures of the present invention are excellent as a single item so that the proportion of heat escaping from columns, studs, or beams to the entire surface of the wall, roof, or floor is small. An expanded material that has heat insulating properties and has flanges on both sides is used as a column, stud, or beam, and an inner wall layer is fixed to the flange on one side of the expanded material, and then the flange on the other side is fixed. The outer wall layer is fixed, and between the inner wall layer and the outer wall layer, a layer of insulating material such as glass wool, rock wool, or styrofoam is carefully formed, which fundamentally solves the problem of condensation. It can be effectively used as an exterior for buildings in cold regions, which was considered difficult in the past, and it can also be used for external walls and roofs of refrigerated warehouses, etc. as it exhibits an excellent insulation effect. It can be used, and it will naturally work effectively under conditions where the outside temperature is higher than room temperature.Therefore, insulated walls, roofs, and floor structures in tropical and desert regions are also attracting attention. It should be done.

[Brief explanation of the drawing]

The attached drawings are one specific example of the present invention and explanatory diagrams related thereto.
x is a plan view of a cut piece of expanded material used as a beam, and the IEIB diagram is 1fl-lfl of Figure 1A.
1113 is a cross-sectional view along li, FIG. 2 is a diagram showing the steady temperature distribution of the expanded material fi, FIG. 1113 is a perspective view showing a specific example of the present invention, and FIG. This is a table showing the cross-sectional structure of this example and five other examples for comparison, and Figures 5A and 5B show the heat insulation effect of each example shown in Figure 4. This is a rough graph for comparison. 1...Expanded material, 6...Inner wall, 12...Outer wall, 14...Insulating material layer Applicant Hideyo Watanabe Agent Patent attorney Masaaki Yonehara Benshiro Hamamoto Tadashi Procedural Amendment (Method) April 6, 1980 Director General of the Patent Office Haruki Shimada 1. Indication of the case Patent Application No. 1983-190908 2. Name of the invention Excellent insulation effect Structure of wall, roof or floor with
1. Name: Hideyo Watanabe 5. Date of amendment order: March 5, 1980 (Shipping date: March 30, 1988)
6. Target of correction Figure 5A Figure 5B Exit IL ('C)

Claims (2)

[Claims] (1) It, K, so that the proportion of heat escaping from columns, studs or beams to the entire surface of the roof or floor is small;
An extended material that has excellent heat insulation properties as a single item and has flanges on both sides is used as a column, a stud or a beam, and an inner wall layer is fixed to the flange on one side of the extended material, In addition, an outer wall layer is fixed to the other 7 lunges, and a layer of heat insulating material such as glass wool or styrofoam in rock wool is formed between the inner wall layer and the outer wall layer, thereby providing a wall or roof with an excellent heat insulating effect. or floor structure. (2) The wall according to claim U, characterized in that the outer wall layer has a two-layer structure comprising plywood or gypsum board or the like on the inside and another outer wall layer on the outside, j
Single machine or floor structure.