JP2834424B2 - Floor heating structure - Google Patents

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 FIG. 8 shows an example of a conventional floor heating structure.
In this floor heating structure, a metal plate c is laid on a 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 through a concave portion 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 transmitted to the floor material b via the metal pipe e and the metal plate c to heat the surface material f and heat the room.

Under the metal plate c, between the joists a and the joists a, a heat insulating material g is filled, and heat is shielded so as to prevent heat from escaping to the large h side supporting the joists a. ing. On the other hand, a plurality of holes i which do not penetrate the surface material f are provided on the lower surface of the floor material b, and a metal pipe e is provided in the plurality of holes i.
Heat from the surface material f
To efficiently transfer heat into the room.

[0004]

By the way, in the above-mentioned conventional floor heating structure, although the floor material b is supported by the joist a, most of the lower surface thereof is in contact with the soft heat insulating material g. The support structure is easy to bend. 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.

[0005] Further, the work of filling the heat insulating material g and the metal plate c
Since it is necessary to perform mounting work on the site, etc., there has been a strong demand for a floor heating structure excellent in workability at the site.

[0006] In particular, when the above-mentioned conventional floor heating structure is to be adopted in a building by the two-by-four construction method, the structure is installed on a so-called platform in which a structural plywood is laid on a floor joist. After the joists a are fixed on the platform at predetermined intervals, many work steps such as sufficiently filling the heat insulating material g and mounting the metal plate c are required, resulting in poor workability. At the same time, there is a problem that the height of the floor in the room is increased, and this has an effect on the livability. In addition, this problem is not limited to the building by the two-by-four construction method, but also occurs when it is desired to retrofit floor heating on the floor of an existing building.

Further, in the above-mentioned conventional floor heating structure, since there is a possibility that an unreasonable 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 accommodated freely in the recess d. Therefore, the contact between the metal pipe e and the concave portion d becomes a line contact at the lower end of the pipe,
The heat transfer 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 has an object to provide a floor heating structure which is excellent in heat conductivity and economy, and can greatly reduce the number of work steps related to on-site construction. With the goal.

[0009]

The present invention has the following configuration to achieve the above object. The invention according to claim 1 is a floor heating structure that heats a room from under the floor, wherein a flat base floor, a structural plywood laid on the base floor and having a groove formed on the upper surface, A metal plate provided on the upper surface of the structural plywood with a groove-shaped concave portion fitted in the groove portion; and a hot water or the like is disposed in the concave portion of the metal plate, and hot water or the like flows through the metal plate and has a circular cross section. A pipe made of a material having a high flexibility in shape, a floor material laid on an upper surface of the metal plate, and a heat shield provided on a lower surface of the structural plywood, and a peripheral edge of the structural plywood. The floor heating structure is characterized in that the upper surface of the structural plywood is exposed between the periphery of the metal plate and the exposed portion is used as an adhesive surface with a floor material.

The invention according to claim 2 is characterized in that the structural plywood, the metal plate and the heat insulating material are integrally formed by bonding before laying on the foundation floor. A floor heating structure according to claim 1.

According to a third aspect of the present invention, the lower part of the recess of the metal plate is formed in a semicircular shape so as to be in close contact with the lower part of the pipe. It has a heating structure.

[0012] A fourth aspect of the present invention, heat transfer to the lower surface of the floor member
4. The floor heating structure according to claim 1, wherein a plurality of grooves contributing to conduction are provided. 5.

[0013]

According to the first aspect of the present invention, heat such as hot water flowing in the pipe is transmitted to the floor material through the metal plate to warm the room. At this time, the conducted heat is prevented from being transmitted 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 smaller than before, and the thermal conductivity is improved. In addition, since there is no need to fill a heat insulating material, work on site is greatly facilitated. Further, the periphery and a metal structural plywood
The upper surface of the structural plywood is left between the edges of the board
Exposed, causing the metal plate to expand horizontally.
Even between adjacent structural plywood, metal plates contact each other
Not to interfere or interfere.

According to the second aspect of the present invention, if the integrated product of the structural plywood, the metal plate and the heat insulating material is brought to the site and laid one after another on the foundation floor, the floor material is thereafter constructed. Therefore, the number of on-site work steps can be significantly reduced as compared with the conventional case.

According to the third aspect of the present invention, the lower portion of the concave portion of the metal plate and the lower portion of the pipe come into close contact with each other in a semicircular shape in cross-sectional view, so that the heat conductivity can be further improved. . Since the pipe is made of a material having high flexibility, the pipe can be formed without providing a joint portion by, for example, folding one long pipe as necessary. Therefore, even if the metal plate and the pipe are brought into surface contact in a semicircular shape in a cross-sectional view, there is no need to worry about breakage of the pipe due to an earthquake or the like because there is no joint portion.

According to the fourth aspect of the present invention, the heat heated by the metal plate is transmitted to the room through the plurality of grooves provided on the lower surface of the flooring. Therefore, heat is easily transmitted from the lower surface to the upper surface of the flooring 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 to provide a groove portion that contributes to 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 as a plane (an example of a foundation floor)
A structural plywood 4 laid on the platform 2 and having a groove 4a (see FIG. 5) formed on the upper surface thereof; and a groove-shaped recess 6a fitted into the groove 4a of the structural plywood 4 (see FIG. 5).
A metal plate 6 provided on the upper surface of the structural plywood 4 comprising:
A pipe 8 provided in the recess 6a of the metal plate 6 and through which hot water or the like 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 section will be described. Platform 2
As shown in FIG. 1, is a floor underlay according to a two-by-four construction method, a base 2a which is bolted to a durable concrete foundation, and a floor joist nailed on the base 2a at regular intervals. 2b and a structural plywood 2c stretched on the floor joist 2b.

Structural plywood 4, metal plate 6 and aluminum foil 1
2 prior to laying on the platform 2
As shown in FIG. 4, it is integrally formed by bonding using a press machine or the like. The structural plywood 4 has a substantially rectangular shape in plan view. For example, a plurality of plywoods having a thickness of 15 mm, a length of 1800 mm, and a width of 910 mm are used in accordance with the size of the building. On the upper surface of each structural plywood 4, as shown in FIG. 2, six straight grooves 4a are juxtaposed along the longitudinal direction, and these grooves 4a are formed on both sides in a cross-sectional view shown in FIG. The surface has a straight shape in the vertical direction, and the lower surface is concave in a semicircular shape, and has a substantially semi-elliptical shape as a whole.

The metal plate 6 is a plate material having a high thermal conductivity such as copper, for example, and as shown in FIG.
On the other hand, three sheets are used in the width direction. Each metal plate 6 is provided so as to cover two adjacent grooves 4 a, and includes a concave portion 6 a that is concaved in accordance with the shape of the groove 4 a of the structural plywood 4. The metal plate 6 is attached to the structural plywood 4 with an adhesive. The upper surface of the structural plywood 4 is exposed, for example, by a width of 30 mm between the adjacent metal plates 6, and the exposed portion is used as an adhesive surface with the floor material 10. Further, also 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 between adjacent structural plywoods 4 do not come into contact with or interfere with each other.

The aluminum foil 12 is previously adhered to the lower surface of the structural plywood 4 with an adhesive. It is preferable from the viewpoint of manufacturing that the structural plywood 4, the metal plate 6 and the aluminum foil 12 are integrally formed by simultaneous bonding with the same press machine. May be bonded in the step. In short, before the structural plywood 4 is laid on the site, the metal plate 6 and the aluminum foil 12
It is only necessary to manufacture an integrated product to which is adhered.

As shown in FIG. 5, the pipe 8 has a circular cross section and is made of a material having high flexibility such as a soft copper pipe. The lower half of the pipe 8 is in close contact with the lower part of the recess 6 a of the metal plate 6, so that the pipe 8 and the metal plate 6 are in surface contact at the lower part of the pipe 8.

Since the pipe 8 is highly flexible, it can be folded back and stored in a U-shaped groove 6a at the end of the room as shown in FIG. It becomes possible. That is, the pipe 8 can be piped so as to meander as a whole, and a single long pipe 8 can be piped without any joint part.

As shown in FIG. 7, the flooring 10 has a plurality of grooves 10a provided on the lower surface of a plate having a thickness of, for example, 12 mm. The plurality of grooves 10a are provided side by side in the width direction, and have a depth of, for example, 8 mm. As shown in FIG. 1, a thin surface material 14 on which a grain of wood or the like is printed is adhered to the surface (upper surface) of the floor material 10.

The floor heating structure of this embodiment has the following (1) to
It is assembled according to the procedure (4). (1) Prior to construction on site, a plurality of integrated products of the structural plywood 4, the metal plate 6, and the aluminum foil 12 are manufactured in a factory or the like. (2) The integrated structural plywood 4 and the like are spread and fixed on the platform 2 at the site as appropriate. 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 inserted into the concave portion 6 of the metal plate 6.
a. In the folded portion of the pipe path shown in FIG. 6, one pipe 8 is fitted into the recess 6a while being bent. (4) Finally, the floor material 10 on which the surface material 14 is stretched is spread with the groove 10a facing downward.

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

Further, since an integrated product of the structural plywood 4, the metal plate 6 and the aluminum foil 12 manufactured in advance can be laid on the platform 2, the number of work steps on site can be greatly reduced as compared with the related art. That is, when the above-mentioned conventional floor heating structure is installed on the platform 2, it is necessary to fix the joist a on the platform 2 and then construct the heat insulating material g, the metal plate c, the pipe e, and the floor material b. There is.

Further, the lower portion of the concave portion 6a of the metal plate 6 and the lower portion of the pipe 8 are brought into surface contact in a semicircular shape in cross-sectional view, so that the heat conductivity can be improved. The pipe 8 is
Since piping can be performed without the joint portion, even if the pipe 8 is not freely movable, there is no fear of damage to the pipe 8 due to an earthquake or the like.

The heat heated by the metal plate 6 is applied to the floor material 1.
0 is transmitted to the room through a plurality of grooves 10a provided on the lower surface of the “0”. Therefore, heat is easily transmitted 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 flooring 10 is laid on the structural plywood 4, it can be set thinner than before .

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, in the present embodiment, the present invention is applied to a building by a two-by-four construction method, but the present invention is also applicable to a case where floor heating is retrofitted to a floor of an existing building.

[0032]

As described above, according to the present invention, in the floor heating structure, the heat conductivity and the economic efficiency can be improved, and the work related to on-site construction can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a floor heating structure according to an embodiment.

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

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

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

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

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

FIG. 7 is a perspective view of the flooring 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 a foundation floor) 4 Structural plywood 4a Groove 6 Metal plate 6a Depression 8 Pipe 10 Floor material 10a Groove 12 Aluminum foil (an example of a heat insulating material)

Claims (4)

(57) [Claims] 1. 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 formed on an upper surface, and the groove of the structural plywood A metal plate provided on the upper surface of the structural plywood with a groove-shaped concave portion fitted into the metal plate; and a hot water or the like, which is disposed in the concave portion of the metal plate and flows through the inside, and has a circular cross section. A pipe made of a material having high flexibility, a floor material laid on the upper surface of the metal plate, and a heat shield provided on a lower surface of the structural plywood, and a peripheral edge of the structural plywood and a metal plate The upper surface of the structural plywood is exposed between the periphery of the
A floor heating structure in which the exposed portion is used as an adhesive surface with a floor material. 2. The structure according to claim 1, wherein 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 floor heating structure according to claim 1, wherein a lower portion of the concave portion of the metal plate is formed in a semicircular shape so as to be in close contact with a lower portion of the pipe. 4. The floor heating structure according to claim 1, wherein a plurality of grooves that contribute to heat conduction are provided on a lower surface of the floor material.