JP2001090015A - Embedded type heating structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a better workability and improve the heat efficiency. SOLUTION: A metal plate member 6 is laid on an insulation board 2 laid on an embedding surface 1. To this plate member 6, a number of pyramidal projections 7 are formed on its surface and, on the rear surface, recessed portions 8 corresponding to the projections are formed on the rear surface. And a pipe guide 12 is provided on this plate member 6, and a hot water pipe 4 is laid along the pipe guides 12 and a concrete layer 5 is provided on the plate member 6 including these hot water pipes 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buried type heating structure which is most suitable for use in melting snow on a road or entrance where concrete is cast, for example.

[0002]

2. Description of the Related Art In the conventional apparatus shown in FIG. 3, a heat insulating material 2 is laid on a buried surface 1 in advance. Then, a welding wire mesh 3 is stretched around the heat insulating material 2 and a hot water pipe 4 is tied and fixed to the welding wire mesh 3. After the hot water pipe 4 is fixed as described above, concrete is poured from above to provide a concrete layer 5. When hot water flows through the hot water pipe 4 as described above, the radiant heat warms the concrete layer 5 and melts the snow thereon.

[0003]

In the conventional buried type heating structure as described above, the hot water pipe 4 must be tied to the welding wire mesh 3, so that there is a problem that the work is troublesome. In addition, the heat of the hot water pipe 4 spreads throughout the concrete layer 5, but the concrete layer 5 has a large heat capacity, so it is difficult to warm up.
There was also the problem that it took time to melt snow. Furthermore, although the heat insulating material 2 is laid, the heat tends to escape to the buried surface 1 side below the heat insulating material 2, and there is a problem that the thermal efficiency with respect to the concrete layer 5 deteriorates accordingly. An object of the present invention is to provide a buried-type heating structure in which all the above-mentioned drawbacks of the related art are eliminated.

[0004]

According to a first aspect of the present invention, a large number of quadrangular pyramid-shaped protrusions are formed on a surface of a heat insulating material laid on a buried surface, and the back surface corresponds to the protrusions. A metal plate having a concave portion was laid, and a pipe guide was provided on the plate, and a hot water pipe was laid along the pipe guide, while a surface material layer was provided on the plate including the hot water pipe. It is characterized by points. The second invention is characterized in that a pipe groove is formed in a predetermined convex portion formed on a plate material, and this pipe groove is used as a component of a pipe guide.

According to a third aspect of the present invention, the projections of the plate material are aligned for each row, and the alignment pitch of the projections arranged in the lower row is shifted by about half a pitch with respect to the projections arranged in the upper row. It is characterized by A fourth aspect of the present invention is characterized in that the pipe guide is constituted by pipe grooves formed at every other stage and intervals between the convex portions at the steps where the pipe grooves are not formed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment shown in FIGS. 1 and 2 is the same as the prior art in which a heat insulating material 2 is laid on a buried surface 1. However, this embodiment is characterized in that a metal plate 6 is laid on the surface of the heat insulating material 2. That is,
The plate member 6 has a quadrangular pyramid convex portion 7 formed on the surface thereof and a concave portion 8 corresponding to the convex portion 7 formed on the back surface thereof. Therefore, if the plate 6 is laid on the heat insulating material 2, a space 9 corresponding to the concave portion 8 is formed between the heat insulating material 2 and the plate 6. Therefore, the amount of concrete corresponding to the space 9 can be reduced. As a result, the capacity of the concrete layer is reduced, and the heat efficiency is increased accordingly. Further, the space 9 also functions as a heat insulating layer.

As shown in FIG. 1, the projections 7 of the plate 6 are arranged in a horizontal direction for each stage. However, the pitch of the projections 7 in the lower row is shifted by half a pitch in the alignment direction of the projections 7 with respect to the upper row of projections arranged in a line. Further, as shown in FIG. 2, a pipe groove 10 is formed on the convex portion 7 which is arranged on every other line in the vertical direction in FIG. Therefore, if the hot water pipe 4 is inserted into the pipe groove 10, the hot water pipe 4 will be located on a straight line as shown in FIG.

[0008] Even in a stage where the pipe groove 10 is not formed, there is a place where the hot water pipe 4 fitted in the pipe groove 10 passes. The distance 11 between the protrusions at this point
Is slightly larger than the diameter of the hot water pipe 4. The space 11 and the pipe groove 10 together form a pipe guide 12. As shown in FIG. 1, a hot water pipe 4 is provided along the pipe guide 12 as described above, and a concrete layer 5 as a surface material layer of the present invention is cast thereon.

[0009] The buried heating structure is constructed as described above. When hot water flows through the hot water pipe 4 of this heating structure, the heat is directly transmitted to the concrete layer 5 and also transmitted to the metal plate 6. Heat is transmitted to the entire surface. Since heat is transmitted to the entire surface of the metal plate material, there is no unevenness in temperature, for example, only the concrete layer 5 around the hot water pipe 4 is heated. In other words, the entire concrete layer 5 is evenly and uniformly heated. Therefore, when snow melts, snow does not remain in places.

Further, between the plate 6 and the heat insulating material 2,
A space 9 corresponding to the recess 8 of the plate 6 is formed, and this space 9 functions as a heat insulating layer. Therefore,
Practically, the space 9 and the heat insulating material 2 form two heat insulating layers. Since there are two heat insulating layers, the temperature from the hot water pipe 4 does not escape to the underground, and the thermal efficiency is improved accordingly. Furthermore, in this heating structure, since it is sufficient to lay the hot water pipe 4 along the pipe guide 12 of the plate 6, it is possible to eliminate the troublesome work of binding the hot water pipe 4 to the welding wire mesh 3 as in the related art. Can be. Therefore, work efficiency is also improved.

On the other hand, since the above-mentioned convex portions 7 are shifted in alignment pitch for each row, the convex portions 7 are generally arranged in a zigzag shape. If the protrusions 7 are arranged in a zigzag shape in this way, the concrete layer 5 can be stably maintained.

[0012]

According to the first aspect of the present invention, a space corresponding to the concave portion is formed between the heat insulating material and the plate member, and this space performs a heat insulating function, so that the heat of the hot water pipe does not escape to the underground. The thermal efficiency is improved accordingly. Also, since the plate is made of metal, it has good thermal conductivity. Therefore, the heat of the hot water pipe spreads evenly throughout the plate material, and does not cause temperature unevenness in the surface material layer. Since temperature unevenness cannot be achieved, unmelted snow does not remain in some places in, for example, snow melting.

According to the second aspect of the present invention, since the hot water pipe can be positioned by fitting the hot water pipe into the pipe groove formed in the projection, it is not necessary to tie the hot water pipe one by one as in the related art. According to the third aspect, since the convex portions can be arranged in a zigzag shape as a whole, the surface material layer in contact with the convex portions can be stably maintained. According to the fourth aspect, since the hot water pipe can be made to follow the pipe guide, there is no displacement of the pipe. Therefore, the hot water pipe can be stably arranged. If the arrangement of the hot water pipe is unstable and the pipe is displaced when the surface material layer is provided, the temperature distribution may be non-uniform by the displaced amount. However, such a problem does not occur in the present invention.

[Brief description of the drawings]

FIG. 1 is a plan view.

FIG. 2 is a sectional view.

FIG. 3 is a sectional view of a conventional buried type heating structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Embedded surface 2 Insulation material 4 Hot water pipe 5 Concrete layer as surface material layer 6 Board material 7 Convex part 8 Concave part 10 Pipe groove 11 Interval 12 Pipe guide

Claims (4)

[Claims] 1. A metal plate material having a large number of quadrangular pyramid-shaped convex portions formed on a surface thereof and a concave portion corresponding to the convex portions formed on a back surface thereof, on a heat insulating material laid on an embedded surface. Spread,
In addition, a buried type heating structure in which a pipe guide is provided on the plate and a hot water pipe is laid along the pipe guide, and a surface material layer is provided on the plate including the hot water pipe. 2. The buried type heating structure according to claim 1, wherein a pipe groove is formed in a predetermined convex portion formed on the plate material, and the pipe groove is a component of the pipe guide. 3. The projections of the plate material are arranged line by row, and the alignment pitch of the projections arranged in the lower row is shifted from the projections arranged in the upper row by substantially a half pitch. 3. The buried heating structure according to 1 or 2. 4. The buried type heating structure according to claim 3, wherein the pipe guide is constituted by pipe grooves formed at every other stage and intervals between the convex portions in the steps where the pipe grooves are not formed.