JPS60259839A - Floor heating device - Google Patents

Abstract

PURPOSE:To make it possible to execute works inexpensively and to improve the strength and durability of the device by installing a heater and a heat storage material on a heat insulating layer provided on the floor and laying mortar thereon. CONSTITUTION:A heater 3 and a heat storage material 4 are laid over a heat insulating layer 2 on the upper surface of a floor 1 of a building consisting of concrete slabs and the like, and mortar is applied thereon so that the heater 3 and the heat storage material 4 are embedded in a layer 5 of mortar. The heat insulating material layer 2 if formed by a panel of hard urethane foam and the like to suppress the heat loss. As the heat storage material 4 is used a composition having a melting point and a condensing point within a desired range and a large latent heat, and filled in a plastic case or the like of a fixed shape, such as 10 hydrated salt of sodium sulfate.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical heat distribution] The present invention relates to the structure of a floor heating system, and more particularly to the structure of a regenerative electric floor heating system that uses a heat storage material and an electric heating resistor.

[Prior art]

A type of floor heating system that uses a special composition with large latent heat as a heat storage material, heats and melts this heat storage material, and then retains heat by the solidification heat (latent heat) released when the heat storage material solidifies. A heating system is used.

As the heat storage material, a material having a predetermined melting point (around 28° C.) is used, such as sodium sulfate IJium decahydrate (Nap 804/10H20, also called Glauber's salt).

In addition, as a heating method for this heat storage material, for example, heaters made of sheets of electrothermal resistors made of resin mixed with conductive powder are arranged along the heat storage material, and electricity is applied to the heaters to heat the heaters to a temperature of about 40°C. A method of making it into a heating element is adopted.

The latent heat of the aforementioned Glauber's salt is, for example, 40 to 45 kcal/Kg, and once it is melted, it gradually releases a large amount of heat over a long period of time at a nearly constant temperature when it solidifies. For example, the room can be kept at a comfortable temperature (for example, 20 to 22°C) for about 10 hours. For this reason, heating can be done at nighttime rates, which are set at low electricity rates (about one-third of daytime rates in Japan), making it economical.

Floor heating systems that use such heat storage materials are superior to other types of heating systems in that they are completely free of danger and can uniformly keep the entire room at a comfortable temperature.

By the way, the structure of this kind of regenerative electric floor heating system uses a unit made up of a heat storage material, a heater, and a heat insulating layer. A structure has been proposed in which the unit is lowered and then fixed by placing floorboards on top of the joists, and further, if necessary, floor finishing material is laid.

However, when installing such conventional unit-type floor heating, it is necessary to fix the joists at predetermined intervals and to stretch and fix the floorboards after installing the heating unit, which requires a large amount of construction work and is expensive. (There was a problem that it was disadvantageous when constructing a large area.

〔the purpose〕

The purpose of Hyakuaki Honri is to eliminate the shortcomings of conventional structures, to create a regenerative electric floor heating system that can be easily and inexpensively installed regardless of the size of the construction area, and has excellent strength and durability. The purpose is to provide equipment.

[Summary]

The present invention achieves the above object by providing a heat insulating layer on the floor, installing a heater and a heat storage material on the heat insulating layer, laying mortar on top of it, and embedding the heater and heat storage material in the mortar. It is.

〔Example〕

The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows the structure of a regenerative electric floor heating system according to an embodiment of the present invention.

In FIG. 1, a heat insulating layer 2 is installed on the upper surface (floor surface) of a floor 1 of a building made of a concrete slab, etc.
A heater 3 and a heat storage material 4 are installed on top of the heater 3 and a heat storage material 4, and mortar is placed on top of the heater 3 and a heat storage material 4.
is embedded in the mortar layer 5.

In the illustrated example, a reinforcement wire is laid prior to placing the mortar 5, and therefore this wire is also embedded in the mortar layer.

A desired floor finishing material T is laid on top of the mortar layer 5 to complete the floor structure.

The heat insulating layer 2 is formed of a panel made of hard urethane foam, for example, and suppresses heat loss to the floor 1.

As the heater 3, for example, one having a structure in which a band-shaped electric heating resistor is covered with a plastic sheet and electric wires are connected to both ends (for example, a heat roll commercially available under the trademark "Delaheat") can be used. This electrothermal resistor usually has a heat generation temperature of 50° C. or less, and is made of, for example, plastic mixed with conductive powder and molded.

The heat storage material 4 is made of sodium sulfate decahydrate, etc., whose melting point and freezing point are within a desired range (for example, 25°C to 30°C).
) and has a large latent heat, which is filled in a regular plastic case (for example, a package made of polypropylene). As a specific example of this heat storage material, there may be mentioned a case containing sodium sulfate decahydrate, which is commercially available under the trademark "Heat Bank".

The dimensions of the heat storage material 4 (external dimensions of the case) are, for example, 250
They are approximately 600 x 15 m in size, and are used by arranging them at predetermined intervals on the heater 3 (as shown in the figure).

As the mortar 5, an appropriate material such as cement-based or plaster-based material can be used in consideration of their properties, and if necessary, multiple types of mortar may be layered to form a composite layer with a structure that takes advantage of the advantages of each. It can also be done.

The surface of this mortar layer 50 serves as a surface for supplying heat into the room, and the heat storage material 4 is embedded at a desired depth (for example, 50 inches) below the surface of the mortar 5.

According to the embodiment described above with reference to FIG.
Since the floor heating structure can be installed simply by pouring the floor heating device, the floor equipped with the heating device can be installed easily and quickly regardless of the size of the floor area, and construction costs can be reduced. Additionally, since the work of fixing frames such as joists and attaching floorboards can be eliminated, the structure is simple and does not require special skill for construction work.

FIG. 2 shows a floor heating system according to a second embodiment of the present invention.

This embodiment differs from the one in FIG. 1 in that a heater 3 is also installed on the upper surface of the heat storage material 4 and embedded in the mortar 5, so that the heat storage material 4 can be heated from either above or below. The other parts are substantially the same as those in FIG. 1, and corresponding parts are designated by the same reference numerals and their explanation will be omitted.

According to the structure shown in Fig. 2, in addition to obtaining the same effect as the structure shown in Fig. 1, the lower heater 3 is energized when not in use indoors (usually at night), and the upper heater 3 is turned on when used indoors (usually at night). By energizing during the daytime), the sensible heat of the upper heater 3 near the heat dissipation surface (floor finishing surface) can be utilized to the maximum when used indoors, and by simultaneously energizing the upper and lower heaters 3, the heat storage material It has the advantage of being able to melt quickly and uniformly, shortening the preparation time (heat storage time before use for heating).

Figure 3 shows the amount of heat supplied into the room while the floor surface (heat supply surface of the floor heating surface) temperature drops by 4°C in the state of energization (off), according to the present invention's implementation structure (curve A). and a heating structure (curve B) in which the heat storage material 4 is omitted and only the heater 3 is embedded (curve B). The horizontal axis of this graph shows the temperature of the heat supply surface on the floor, the vertical axis shows the amount of heat supplied,
The heat storage material used has a melting point of 28°C and a freezing point of 25°C.

As is clear from this graph, when using only the heater 3 as shown in curve B, the amount of heat supplied is almost the same in all temperature ranges, approximately 600 kcaJ, whereas in the structure according to the present invention shown in curve A, the amount of heat supplied is approximately 600 kcaJ due to the latent heat of the heat storage material 4. Approximately 20°C~
The amount of heat supplied increases significantly in the range of about 30°C. Therefore, according to the implementation structure of the present invention, if the heat storage material is melted in advance, the amount of heat can be gradually supplied over a long period of time without electricity, and the indoor temperature can be kept at a comfortable temperature (for example, 20 degrees Celsius) for a long period of time. It can be kept at a temperature of ~22℃).

In some cases, it is also possible to adopt a structure in which the heater 3 is installed only on the upper surface of the heat storage material 4.

〔effect〕

As is clear from the above description, the present invention provides a regenerative electric floor heating device that has a simple structure, can be installed at low cost, and can be installed easily and quickly regardless of the size of the floor surface.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing the main parts of a regenerative electric floor heating system according to an embodiment of the present invention, and FIG. 2 is a partially cutaway perspective view of a regenerative electric floor heating system according to a second embodiment of the present invention. FIG. 3, a partial cross-sectional view, is a graph illustrating the heat storage effect of the implementation structure of the present invention in comparison with a structure without a heat storage material. 1... Floor, 2... Heat insulation layer, 3... Heater, 4...
...Heat storage material, 5... Mortar agent Patent attorney Inu Oto Yasushi Taketan 1 Figure @ 2 Figure 3 Page 3 Io zu 7! Q 28 32 36 Bed temperature (1
)

Claims (1)

[Claims] (1) In a type of floor heating system that heats a heat storage material with large latent heat with a heater made of an electric heating resistor and maintains heat mainly by utilizing the solidification heat of the heat storage material, a heat insulating layer is provided on the floor, and the heat insulating layer is A heat storage type % type % characterized by installing a heater and heat storage material on top, placing mortar on top of it, and embedding the heater and heat storage material in the mortar layer.