JP2520071Y2 - Floor heating panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to a floor heating panel that performs floor heating using a heat pipe.

<Prior Art> FIG. 8 shows a conventional floor heating panel. As shown in FIG. 8, in the conventional floor heating panel 1, circulation pipes 2 and 3 through which high-temperature water flows are arranged in a plane so that floor heating is performed by the heat of the high-temperature water. FIG. 9 shows AA of FIG.
3 shows a cross section. In FIG. 9, reference numeral 4 denotes a surface material, and the distribution pipe 3 is arranged on the back surface of the surface material 4 so as to contact the upper surface side and is fixed by a tape 5. Reference numeral 6 is a heat-resistant and heat-insulating core material, and 7 is a back surface material.

By the way, those that distribute such hot water throughout the panel are
Although the structure of the panel itself is simple, there are many problems such as the generation of water stains and the difficulty of draining water.

Therefore, as shown in FIG. 10, a large number of heat pipes 9 are connected to a hot water pipe 8 for circulating hot water by a panel 10
Have been proposed over the entire area.

In this heat pipe type panel 10, the heat receiving portion side of the heat pipe 9 is heated by circulating hot water in the hot water pipe 8, and the entire panel 10 is heated by the heat transport by this heating.

<Problems> Floor heating panels using heat pipes have the following problems.

The heat pipe 9 and the hot water pipe 8 are thermally conductively coupled to each other through the heat exchange portion, but due to the nature of the heat pipe 9, the heat pipe 9 and the hot water pipe 8 are formed as separate pipe bodies, and the outer surface of each pipe is A so-called dry heat exchange is performed in which the two are in direct mechanical contact. Here, the relationship of the temperature difference caused by heat transfer is shown by the following equation.

q = ΔT / γ (1) where {q: amount of heat transferred per unit heat transfer area {ΔT: temperature difference between high temperature part and low temperature part {γ: thermal resistance value Upon replacement, the thermal resistance value γ becomes a relatively large value, and although there are differences depending on the structure,
It will be around 1. Therefore, the hot water pipe 8 and the heat pipe 9
When transferring 30 kcal / h of heat between and, 30 de between them
There will be an excessive difference around g. This temperature difference is directly transmitted to the entire panel through the surface material, and there is a problem that the portion corresponding to the hot water pipe 8 is hot, but the portion corresponding to the heat pipe 9 is cold, resulting in poor usability. .

Generally, a thermosiphon type heat pipe is used in a floor heating panel, but in this heat pipe, it is necessary to recover the working fluid inside from the condensing part to the evaporating part. Normally, the thermosyphon type heat pipe uses gravity to collect the working fluid in the evaporator, but it is difficult to make the evaporator lower than the condenser in a floor heating panel in which the heat pipe is arranged in a plane.

<Means for Solving Problems> The present invention is to provide a hot water pipe for circulating hot water along the entire outer peripheral edge of the surface material on the back surface side of the surface material with a predetermined distance from the surface of the surface material. A heat pipe internally provided with a working fluid so as to be surrounded by the hot water pipe, and the evaporation part of the heat pipe is thermally connected to the hot water pipe, The pipe is formed from a horizontal central portion that abuts the facing material and an end portion that gradually descends toward the evaporation portion.

<Operation> In the present invention, the working fluid is efficiently heated from the hot water pipe through the evaporating section, the working fluid evaporated in the evaporating section dissipates heat in the central portion and is condensed, and the end portion is located below the central portion. As a result, the working fluid naturally flows from the central portion to the end portion and reaches the evaporation portion, which promotes the circulation of the working fluid, and the heat of the heat pipe is not directly transmitted to the surface material. The temperature distribution of the surface material can be made uniform throughout.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings. The same parts as those of the conventional one are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 1 is a perspective view of an embodiment of the present invention. In FIG. 1, reference numeral 11 denotes a floor panel. Two hot water pipes, a straight tubular hot water pipe 12 and a U-shaped hot water pipe 13 arranged along the outer periphery of the panel 11, are provided on the floor panel 11. The pipes are arranged along the outer periphery of the panel 11. The heat pipe 14 is installed between the hot water pipes 12 and 13.
Both ends are bent in an L shape so as to be along the hot water pipes 12 and 13 to improve heat transfer.

A sectional view taken along the line AA of FIG. 1 is shown in FIG. This second
As shown in the figure, a spacer 15 is provided between the hot water pipe 13 and the surface material 4, while the heat pipe 14 and the surface 4 are provided.
Is in direct contact with. The spacer 15 makes the temperature distribution on the panel 11 uniform by providing a resistance between the surface material 4 and the hot water pipe 13 that is commensurate with the thermal resistance between the heat pipe 14 and the hot water pipe 13. A material having a physical resistance that matches the thermal resistance is selected. The material, thickness, etc. of this spacer 15 will be confirmed by experiments, but as an example, when carrying a heat quantity of 30 Kcal / h per heat pipe 14, the spacer 15 has a foam rubber of about 2 mm and urethane foam 1
A thickness of about mm was effective.

FIG. 3 is a sectional view taken along line BB of FIG. As shown in FIG. 3, the hot water pipe 13
Will be disposed below the surface material 4 by the thickness of the spacer 15. Along with this, the evaporation portion 14a of the heat pipe 14 that comes into contact with the hot water pipe 13 is also formed below the surface material 4. As a result, the heat pipe 14 is formed so as to be inclined so that both sides thereof descend from the central portion in contact with the surface material 4 toward the evaporation portion 14a. As a result, the working liquid in the heat pipe 14 that condenses near the center is collected in the evaporation unit 14a along this slope.

As a method for reducing the thermal resistance between the heat pipe 14 and the hot water pipe 13, for example, as shown in FIG. 4, the evaporation part 14a of the heat pipe 14 bent into an L shape and the hot water pipe 12,
It is effective to fill the gap with 13 with a material having excellent thermal conductivity such as solder. As a result, the heat transfer efficiency can be increased to perform efficient floor heating, and the temperature distribution on the floor panel surface can be reduced.

<Other Embodiments> Other embodiments are shown in FIGS.

In the above embodiment, the surface material 4 is provided over the entire length of the hot water pipes 12 and 13.
A spacer 15 is provided between and, but as shown in FIG.
The spacers 16 may be provided in several small places at regular intervals. In this case, the core material 6 filled in the panel is made of a foamable material such as urethane foam, and is filled in the panel by injection foaming. In this case, urethane foam as the core material 6 intervenes between the surface material 4 not provided with the spacer 15 and the hot water pipe 13 and functions as a spacer. In this case, the spacer 16 is selected to have the same physical properties as urethane foam in order to make the surface temperature of the panel uniform, and its thickness is also adjusted according to the heat transport amount of the heat pipe.

Still another embodiment will be described with reference to FIGS. 6 and 7.
As shown in FIGS. 6 and 7, U-shaped metal fittings 17 may be used as spacers. The metal fittings 17 are fitted into the hot water pipe 13 at regular intervals, and hold a gap corresponding to the thickness of the metal fitting 17 between the hot water pipe 13 and the surface material 4. By using urethane foam as the core material 6 as described above, the urethane foam is filled between the core material 6 and the surface material 4 formed of the metal fitting 17 and functions as a spacer. In this way, the panel is very easy to manufacture.

In the above embodiments, the spacer is a foam material, rubber or the like, but any material may be used as long as it is suitable for the action of the spacer. A space may be formed as a spacer between the air, that is, the surface material and the hot water pipe.

<Effect> Since the floor heating panel of the present invention is configured as described above, the hot water pipe is arranged at a predetermined distance from the surface of the surface material, and the heat pipe is placed in the horizontal central portion that abuts on the surface material. And the end portion that gradually drops toward the evaporation portion, the floor heating panel can be formed thin while maintaining the circulation efficiency of the working fluid. Furthermore, since the heat of the heat pipe is not directly transmitted to the surface material, the temperature distribution of the surface material of the floor heating panel can be made uniform throughout. In addition, by arranging hot water pipes that circulate high-temperature water on the outer peripheral edge of the surface material that releases a large amount of heat to the outside, the temperature distribution between the outer peripheral edge portion and the central portion of the surface material is further improved over the entire surface. Can be uniform.

[Brief description of drawings]

1 is a perspective view of an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is a sectional view taken along line BB of FIG. 1, and FIG. 4 is a portion C of FIG. FIG. 5 is an enlarged view, FIG. 5 is a perspective view of another embodiment, FIG. 6 is a transverse sectional view of another example, FIG. 7 is a vertical sectional view of the same as above, FIG. 8 is a perspective view of a conventional panel, and FIG. Same as the above horizontal cross-sectional view, FIG. 10 is a perspective view of a conventional panel. 11: Panel, 12, 13: Hot water pipe, 14: Heat pipe, 15: Spacer.

Claims (1)

(57) [Scope of utility model registration request] 1. A hot water pipe, which circulates high-temperature water along the entire outer peripheral edge of the surface material, is arranged at a predetermined distance from the surface of the surface material on the back surface side of the surface material. In a floor heating panel in which a heat pipe internally provided with a working liquid so as to be surrounded by is arranged in a plane, and an evaporation part of the heat pipe is thermally connected to the hot water pipe, the heat pipe is A floor heating panel, characterized in that it is formed from a horizontal central portion that comes into contact with the surface material and an end portion that gradually drops toward the evaporation portion.