JPH0544949A - Underfloor space heating structure - Google Patents

Abstract

PURPOSE:To increase a heat accumulating amount and to enable regulation of the temperature of a space under a floor by a method wherein a concrete layer in which pipes for a heating medium are embedded, is laminated on a floor heat insulation layer, and a heat accumulation layer is further formed thereon. CONSTITUTION:A floor heat insulation layer 3 prevents heat from emitting to a ground 1 in the case of, for example, a plastic foam of an independent air bubble texture, and has moistureproofing ability to prevent entrance of the moisture content of the ground 1 to a housing. A concrete layer 4 is divided into a reinforcing base concrete layer 5 and a floor concrete layer 6, and pipes 7 for a heating medium are installed in a sandwiched state between the reinforcing base concrete layer 5 and the floor concrete layer 6. A heat accumulating material layer 10 is formed in a manner to seal a metallic or a plastic container with a heat accumulating material consisting mainly of, for example, calcium chloride, the layer having so-called chemical heat pump operation and capable of regulating the temperature of a space under a floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor space heating structure for houses and structures.

[0002]

2. Description of the Related Art Conventionally, a floor heating structure has a structure in which a pipe is installed on the ground below the floor and the pipe is buried in a concrete layer.

[0003]

However, in such a structure, even if the concrete layer is a heat storage layer, heat is radiated into the soil severely and the thermal efficiency is poor. Moreover, moisture in the soil penetrates the concrete, and There was a drawback that a large amount of dew was generated. Further, vibrations such as an earthquake are directly transmitted to the pipe, which causes disadvantages such as disconnection of the pipe connecting portion, deformation of the cross-sectional shape of the pipe, and cutting of the pipe. further,
When there is water stored in the pipe, it expands and the pipe bursts. Therefore, JP-A-63-255
An earth heating structure as disclosed in Japanese Patent No. 465 has been proposed.
However, in this case, the concrete layer also serves as a heat storage material, which makes it difficult to control the temperature of the underfloor space.

[0004]

In order to solve such a problem, the present invention forms a heat insulating layer between soil and a concrete layer on a soil, and embeds a heat medium pipe in the concrete layer to form a heat medium. Circulate and heat the underfloor space through the concrete layer, form a heat storage material layer on the concrete layer, and use a substance that uses latent heat when changing from solid to liquid, liquid to solid as the heat storage material. It proposes an underfloor space heating structure capable of increasing the amount of stored heat and making the temperature constant by utilizing the fact that the heat storage material changes between solid and liquid at a constant temperature.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The underfloor space heating structure according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a sectional view showing a typical embodiment of an underfloor space heating structure according to the present invention,
Reference numeral 1 is the ground, 2 is a foundation, 3 is a soil heat insulating layer, 4 is a concrete layer, 7 is a heat medium pipe, 8 is a heat source, and 10 is a heat storage material layer.

That is, the soil insulating layer 3 is made of a rigid plastic foam such as polystyrene foam, polyurethane foam or phenol foam and has a closed cell foaming structure having a compressive strength of about ³⁰ to 100 kg / m ³ , or an ALC plate, Consists of at least one type of wood chip cement board, wood wool cement board, etc., thickness is 10-100m
It is about m. When the heat insulating layer 3 is used for heating the soil by passing a heat medium such as hot water into the heat medium pipe 7,
This is to prevent this heat from being released to the ground 1. In addition, when the soil heat insulating layer 3 is made of a hard plastic foam having a closed-cell foam structure, it has moisture resistance,
Water from the ground 1 does not enter the house,
When a wettable material such as an LC board or a wood wool cement board is used, as shown by a chain double-dashed line, or the soil heat insulation layer 3
And a moisture-proof sheet 9 between the concrete layer 4 (not shown)
Is preferably laid. Of course, it is also possible to use the hard plastic foam and the moisture-proof sheet 9 together.

The concrete layer 4 functions as a heat storage material, heat dispersion from the heat medium pipe 7, and as a heat radiating material, and when the heat medium pipe 7 is embedded, water should be stored inside the heat medium pipe 7. It also serves to prevent the heat medium pipe 7 from bursting when it is stored and frozen.
That is, the concrete layer 4 is divided into a reinforcing base concrete layer 5 and a soil concrete layer 6 for the sake of convenience, and the heat medium pipe 7 is sandwiched between the reinforcing base concrete layer 5 and the soil concrete layer 6. The reinforcement base concrete layer 5 and the soil concrete layer 6 may be formed by driving, or the reinforcement base concrete layer 5
It is also possible to form by using a PC board, and after the heat medium pipe 7 is piped thereon as shown in FIGS. 2 and 3, for example, the soil concrete layer 6 is driven in.

The heat medium pipe 7 is composed of a copper pipe, a plastic pipe or the like, and heats the concrete layer 4 by circulating a heat medium such as water or antifreeze heated by a heat source 8 such as a boiler or a solar system. The heat storage material layer 10 and the underfloor space are heated. As shown in FIGS. 1 and 2, it is preferable that the heat medium pipe 7 has a portion between the heat source 8 and the concrete layer 4 covered with a heat insulating material 7a.

The heat storage material layer 10 absorbs a part of the heat released from the concrete layer 4 and stores the heat, and at the same time, absorbs a part of the heat in the underfloor space or radiates the heat to the underfloor space. That is, the heat storage material layer 10 is, for example, as shown in FIGS. 4 (a) and 4 (b), a panel-shaped heat storage material 11 in which a heat storage material 11 is enclosed in a container such as metal or plastic.
Alternatively, although not shown, the heat storage panels 12 and 13 made of a mat-shaped bag in which the heat storage material 11 is put are laid on the concrete layer 4. To explain further, the heat storage material 11 is, for example, calcium chloride Cacl.
₂ is obtained by the main component, this is Cacl ₂ · 6H
It changes to ₂ O and accumulates heat as latent heat when it changes from solid to liquid, and conversely from Cacl ₂ · 6H ₂ O to Cacl ₂
And a so-called chemical heat pump that releases heat when changing from liquid to solid. Since this change is performed at a constant temperature, the heat storage material layer 10 adjusts the temperature of the underfloor space.

The above description is merely one embodiment of the underfloor space heating structure according to the present invention, and it is also possible to cover at least one of the inner and outer surfaces of the foundation 2 with a heat insulating material 2a as shown in FIG. . Further, the heat medium pipe 7 is not limited to one on the entire surface of the concrete layer 4, but the concrete layer 4 may be divided into a plurality of blocks, and the heat medium pipe 7 may be provided in each block.

[0011]

As described above, according to the underfloor space heating structure of the present invention, it is possible to prevent the moisture from the ground from being directly supplied to the underfloor space, and to prevent the occurrence of dew condensation under the floor or in the house. Can be suppressed. Even if water is stored in the heat medium pipe, it does not burst even when frozen because it is sandwiched by the concrete layer. Heat storage under the floor is easy, and there is little heat dissipation to the outside. By providing the heat storage material layer, the amount of heat storage can be increased and the temperature of the underfloor space can be made constant. There are effects and features.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a typical embodiment of an underfloor space heating structure according to the present invention.

FIG. 2 is an explanatory diagram showing an arrangement example of a heat medium pipe.

FIG. 3 is an explanatory view showing an arrangement example of a heat medium pipe.

FIG. 4 is an explanatory diagram showing an example of a heat storage panel that forms a heat storage material layer.

[Explanation of symbols]

 3 Dirt insulation layer 4 Concrete layer 7 Heat medium pipe 8 Heat source 10 Heat storage material layer

Claims (1)

[Claims] 1. In an underfloor space heating structure in which a heat medium pipe is laid between the soils of a house or a structure, an interstitial heat insulating layer is formed on the ground below the floor, and a concrete layer is laminated on the intersoil insulating layer, An underfloor space heating structure, characterized in that a heat medium pipe is embedded in a concrete layer, and a heat storage material layer is provided on the concrete layer.