JPH08319712A - Floor heating structure - Google Patents

Abstract

PURPOSE: To improve heat conductivity and workability by successively stacking a heat insulation material, a structural plywood, a metallic sheet, and a floor member on a foundation floor, and arranging a pipe in which hot water, etc., flows in a groove-shaped recessed part of the metallic sheet fitted to the groove part formed in the upper surface of a structural plywood. CONSTITUTION: Heat from a pipe 8 is transferred to a floor member 10 through a metallic sheet 6, and prevented from being transferred to a platform 2 as a foundation floor by a heat insulation material such as an aluminum foil 12 attached to the lower surface of a structural plywood 4. An integrated member with the plywood 4, the metallic sheet 6, and the aluminum foil 12 is installed on the platform 2, and man-hour is greatly reduced. The lower part of a recessed part of the metallic sheet 6 and the lower part of the pipe 8 are brought into surface contact in a semi-circular manner to improve the heat conductivity. Because a groove 10a is provided in the lower surface of the floor member 10, the heat from the metallic sheet 6 is easily transferred to the inside of a room, and the heat conductivity is further improved. The heat conductivity and economy can be improved, and the work at site 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 floor heating structure.

[0002]

2. Description of the Related Art An example of a conventional floor heating structure is shown in FIG.
In this floor heating structure, a metal plate c is laid on the lower surface side of a floor material b fixed on a joist a, and a metal pipe e through which hot water or the like flows is disposed in a recess d provided in the metal plate c. (For example, see Japanese Utility Model Publication No. 6-43350). In this floor heating structure, heat such as hot water is transferred to the floor material b via the metal pipe e and the metal plate c to warm the surface material f and heat the room.

A heat insulating material g is filled under the metal plate c between the joists a and a, and shields the heat so that the heat does not escape to the pulling h side supporting the joists a. ing. On the other hand, a plurality of holes i that do not penetrate the surface material f are provided on the lower surface of the floor material b, and the metal pipe e is provided in the plurality of holes i.
The heat from the surface material f is introduced from immediately behind the surface material f.
It heats the room so that heat can be efficiently transmitted to the room.

[0004]

By the way, in the conventional floor heating structure, the floor material b is supported by the joists a, but most of the lower surface thereof is in contact with the soft heat insulating material g. , It has a flexible support structure. Therefore, the floor material b needs to be formed of a thick plate material having a thickness of, for example, 12 mm, which increases the cost and affects the thermal conductivity from under the floor to the room.

Further, the work of filling the heat insulating material g and the metal plate c
Since it is necessary to carry out the installation work etc. on the site, there has been a strong demand for a floor heating structure excellent in workability on the site.

[0006] In particular, when it is attempted to adopt the above-mentioned conventional floor heating structure in a building by the two-by-four construction method, it will be installed on a so-called platform in which structural plywood is laid on the floor joists, but in that case, Since the joists a are placed and fixed on the platform at a predetermined interval, the heat insulating material g is sufficiently filled, and moreover, the metal plate c is placed on the platform, and many work steps are required, resulting in poor workability. At the same time, there arises a problem that the floor height in the room becomes high, and the habitability is affected. It should be noted that this problem is not limited to the building by the two-by-four construction method, and also occurs when it is desired to retrofit floor heating on the floor surface of an existing building.

Further, in the above-mentioned conventional floor heating structure, since an external force may be applied to the joint portion of the metal pipe e due to an earthquake or the like, the metal pipe e is housed in the recess d so as to be free to move. Therefore, the contact between the metal pipe e and the recess d is a line contact at the lower end of the pipe,
The heat transfer property from the metal pipe e to the metal plate c was not sufficient.

The present invention has been made in view of the above-mentioned conventional problems, and provides a floor heating structure which is excellent in thermal conductivity and economical efficiency and can significantly reduce the work steps involved in on-site construction. With the goal.

[0009]

The present invention has the following configuration to achieve the above object. That is, the invention of claim 1 is a floor heating structure for heating a room from under the floor, a planar base floor, a structural plywood laid on the base floor and having a groove portion formed on the upper surface thereof, A metal plate provided on the upper surface of the structural plywood that has a groove-shaped recess that fits into the groove of the plywood; and a pipe that is disposed in the recess of the metal plate and through which hot water or the like flows. A floor heating structure comprising: a floor material laid on an upper surface of the metal plate; and a heat shield material provided on a lower surface of the structural plywood.

The invention of claim 2 is characterized in that the structural plywood, the metal plate and the heat shield are integrally formed by adhesion prior to laying on the foundation floor. The floor heating structure according to claim 1.

According to a third aspect of the present invention, the pipe is made of a material having a circular cross section and having a high flexibility, and the lower portion of the concave portion of the metal plate is in contact with the lower portion of the pipe. The floor heating structure according to claim 1 or 2, wherein the floor heating structure is formed in a circular shape.

According to a fourth aspect of the present invention, the bottom surface of the floor material is
3. A plurality of groove portions are provided, and the groove portions are provided.
Alternatively, it is the floor heating structure described in any one of the above.

[0013]

According to the first aspect of the invention, the heat of hot water or the like flowing in the pipe is transferred to the floor material through the metal plate to warm the room. At that time, the heat conducted is prevented from being transferred to the foundation floor side by the heat shield provided on the lower surface of the structural plywood.

Since the flooring material is laid on the structural plywood on the foundation floor, the thickness can be set thinner than before and the thermal conductivity is improved. In addition, since it is not necessary to fill it with a heat insulating material, work at the site becomes very easy.

According to the invention of claim 2, if an integrated product of the structural plywood, the metal plate and the heat insulating material is brought to the site and laid on the foundation floor one after another, then the floor material is constructed thereafter. Since it is only necessary to perform the above, it is possible to significantly reduce the work man-hours on the site as compared with the conventional method.

According to the invention of claim 3, the lower part of the recess of the metal plate and the lower part of the pipe come into close contact with each other in a semicircular shape in a cross-sectional view, so that the thermal conductivity can be further improved. . Since the pipe is made of a material having a high degree of flexibility, a long pipe can be folded back as needed to form a pipe without providing a joint portion. Therefore, even if the metal plate and the pipe are brought into surface contact with each other in a semicircular shape in a cross-sectional view, there is no joint portion, so that there is no fear of damage to the pipe due to an earthquake or the like.

Further, in the invention of claim 4, the heat heated by the metal plate is transmitted to the room through the plurality of grooves provided on the lower surface of the floor material. Therefore, heat is easily transferred from the lower surface to the upper surface of the floor material, and the thermal conductivity can be further improved. On the other hand, in the conventional floor heating structure, since it is necessary to secure the strength of the floor material to some extent, it is difficult in terms of strength to provide the groove portion that contributes to the heat conduction even though the hole can be provided. is there.

[0018]

An embodiment of the present invention will be described below with reference to the drawings. The floor heating structure of the present embodiment, as shown in FIG.
Platform 2 formed in a flat shape (an example of foundation floor)
And a structural plywood 4 laid on the platform 2 and having a groove portion 4a (see FIG. 5) formed on the upper surface, and a groove-shaped recess 6a that fits into the groove portion 4a of the structural plywood 4 (see FIG. 5).
A metal plate 6 provided on the upper surface of the structural plywood 4;
A pipe 8 which is disposed in the recess 6a of the metal plate 6 and through which warm water flows, a floor material 10 laid on the upper surface of the metal plate 6, and an aluminum foil 12 provided on the lower surface of the structural plywood 4.
(An example of a heat shield).

The configuration of each part will be described. Platform 2
As shown in FIG. 1, is a floor subfloor according to the two-by-four construction method, and is a base 2a tightly bolted to a sturdy concrete foundation, and a floor joist nailed on the base 2a at regular intervals. 2b and a structural plywood 2c stretched over the floor joist 2b.

Structural plywood 4, metal plate 6 and aluminum foil 1
2 is shown in FIG.
As shown in FIG. 4, it is integrally configured by adhesion using a press machine or the like. The structural plywood 4 has a substantially rectangular shape in a plan view, and a plurality of structural plywoods having a thickness of 15 mm, a length of 1800 mm, and a width of 910 mm are used according to the size of the building. As shown in FIG. 2, six straight groove portions 4a are juxtaposed along the longitudinal direction on the upper surface of each structural plywood 4, and these groove portions 4a are formed on both sides in the cross-sectional view shown in FIG. The surface has a straight shape in the vertical direction and the lower surface is recessed in a semicircular shape, and has a generally semielliptical shape as a whole.

The metal plate 6 is a plate material having a high thermal conductivity, such as copper, and as shown in FIG.
On the other hand, three sheets are used side by side in the width direction. Each metal plate 6 is provided so as to cover two adjacent groove portions 4a, and has a recessed portion 6a that is recessed according to the shape of the groove portion 4a of the structural plywood 4. The metal plate 6 is attached to the structural plywood 4 with an adhesive. Then, the upper surface of the structural plywood 4 is exposed between the adjacent metal plates 6 by a width of 30 mm, for example, and the exposed portion serves as a bonding surface with the floor material 10. Further, even between the peripheral edge of the structural plywood 4 and the peripheral edge of the metal plate 6, the upper surface of the structural plywood 4 is left with a width of, for example, 15 mm, so that even if the metal plate 6 expands in the horizontal direction. The metal plates 6 do not come into contact with or interfere with each other between the adjacent structural plywoods 4.

The aluminum foil 12 is previously attached to the lower surface of the structural plywood 4 with an adhesive. Although it is desirable in manufacturing that the structural plywood 4, the metal plate 6 and the aluminum foil 12 are bonded together by the same press machine at the same time, the structural plywood 4 is separated from the metal plate 6 and the aluminum foil 12, respectively. You may adhere in the process of. In short, before the structural plywood 4 is laid on site, the metal plate 6 and the aluminum foil 12 are attached to the structural plywood 4.
It suffices to manufacture an integrated product in which

As shown in FIG. 5, the pipe 8 has a circular cross section and is made of a highly flexible material such as a soft copper pipe. The lower half of the pipe 8 is in close contact with the lower part of the recess 6a of the metal plate 6, and therefore the pipe 8 and the metal plate 6 are in surface contact with each other at the lower part of the pipe 8.

Further, since the pipe 8 is highly flexible, it may be folded back and housed in the U-shaped groove 6a at the indoor end as shown in FIG. It will be possible. That is, the pipe 8 can be arranged so as to meander as a whole, and a single long pipe 8 can be formed without a joint portion.

As shown in FIG. 7, the floor material 10 is, for example, a plate material having a thickness of 12 mm and provided with a plurality of grooves 10a on the lower surface thereof. The plurality of groove portions 10a are provided side by side in the width direction, and have a depth of 8 mm, for example. In addition, as shown in FIG. 1, a thin surface material 14 having wood grain printed thereon is attached to the surface (upper surface) of the floor material 10.

The floor heating structure of this embodiment has the following (1)-
It is assembled in the procedure of (4). (1) Prior to on-site construction, a plurality of integrated products of structural plywood 4, metal plate 6 and aluminum foil 12 are manufactured in a factory or the like. (2) The integrated structural plywood 4 and the like are properly laid and fixed on the platform 2 on site. At this time, as shown in FIG. 1, an aluminum tape 16 is provided at the lower end of the gap between the structural plywoods 4 to prevent heat from escaping from the gap to the platform 2 side. (3) Next, the pipe 8 such as a soft copper pipe is attached to the recess 6 of the metal plate 6.
Store in a. At the folded portion of the pipe path shown in FIG. 6, one pipe 8 is bent and fitted into the recess 6a. (4) And finally, the flooring material 10 with the surface material 14 stretched is spread with the groove 10a facing downward.

According to the floor heating structure of this embodiment assembled as described above, the heat of the hot water flowing through the pipe 8 is transferred to the floor material 10 through the metal plate 6 to warm the room. At that time, the conducted heat is reliably prevented from escaping to the platform 2 side by the aluminum foil 12 and the aluminum tape 16 attached to the lower surface of the structural plywood 10.

Further, since the prefabricated structural plywood 4, the metal plate 6 and the aluminum foil 12 can be laid on the platform 2, the work man-hours at the site can be greatly reduced as compared with the conventional case. That is, when installing the conventional floor heating structure on the platform 2, it is necessary to fix the joist a on the platform 2 and then install the heat insulating material g, the metal plate c, the pipe e and the floor material b. There is.

Further, since the lower portion of the recess 6a of the metal plate 6 and the lower portion of the pipe 8 are in surface contact with each other in a semicircular shape in a cross sectional view, the thermal conductivity can be improved. The pipe 8 is
Since the pipe can be provided without a joint portion, there is no fear of damage to the pipe 8 due to an earthquake or the like even if the pipe 8 is not freely movable.

The heat of the metal plate 6 is applied to the floor material 1
0 is transmitted to the room through a plurality of groove portions 10a provided on the lower surface. Therefore, the heat is easily transferred from the lower surface to the upper surface of the flooring material 10, and the thermal conductivity can be further improved. Of course, since the floor material 10 is laid on the structural plywood 4, it can be set thinner than the conventional one. Therefore, instead of providing the groove 10a in the floor material 10, the total thickness of the floor material 10 is set to be thin, for example, about 6 mm. Then, the material cost can be reduced while ensuring a certain degree of thermal conductivity.

The present embodiment is a preferred embodiment of the present invention, and the technical scope of the present invention is not limited to this embodiment. For example, the present embodiment applies the present invention to a building by the two-by-four method, but it can also be applied to the case where floor heating is added to the floor of an existing building.

[0032]

As described above, according to the present invention, in the floor heating structure, it is possible to improve the thermal conductivity and the economical efficiency, and it is possible to significantly reduce the work involved in the on-site construction.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a floor heating structure of this embodiment.

FIG. 2 is a perspective view of an integrated product including a metal plate, a structural plywood, and an aluminum foil according to this embodiment.

FIG. 3 is a plan view of an integrated product including a metal plate, a structural plywood, and an aluminum foil according to this embodiment.

4 is a sectional view taken along line IV-IV in FIG.

5 is an enlarged cross-sectional view of a portion A in FIG.

FIG. 6 is a perspective view of another example of the integrated product according to the present embodiment.

FIG. 7 is a perspective view of the flooring material according to the present embodiment as viewed from the lower surface side.

FIG. 8 is a sectional view of a conventional floor heating structure.

[Explanation of symbols]

 2 Platform (an example of foundation floor) 4 Structural plywood 4a Groove 6 Metal plate 6a Recess 8 Pipe 10 Floor material 10a Groove 12 Aluminum foil (an example of heat shield)

Claims (4)

[Claims] 1. A floor heating structure for heating a room from under the floor, a planar base floor, a structural plywood laid on the basic floor and having a groove formed on an upper surface, and the groove of the structural plywood. A metal plate provided on the upper surface of the structural plywood having a groove-shaped recess fitted therein, a pipe disposed in the recess of the metal plate and through which hot water or the like flows, and a metal plate of the metal plate. A floor heating structure comprising: a floor material laid on an upper surface; and a heat shield material provided on a lower surface of the structural plywood. 2. The structural plywood, the metal plate and the heat shield are integrally formed by bonding prior to laying on the foundation floor. Floor heating structure. 3. The pipe is made of a highly flexible material having a circular cross section, and the lower portion of the recess of the metal plate is formed in a semicircular shape so as to be in close contact with the lower portion of the pipe. The floor heating structure according to claim 1 or 2, characterized in that. 4. The floor heating structure according to claim 1, wherein a plurality of groove portions are provided on a lower surface of the floor material.