JPS58214789A - Floor heating heat accumulator - Google Patents

Abstract

PURPOSE:To improve the heat transfer from a heat accumulator to a floor surface as well as the floor heating efficiency by a method wherein a heat transfer bent plate provided with multiple projecting strip conductors with U shape section is placed on a heat reserving layer coming into direct contact with the plate. CONSTITUTION:Numerous crushed stones 4 forming a heat reserving layer 5 are heaped on a bottom plate 17 arranged on a heat insulating layer 16. A heat transfer bent plate 18 provided with multiple projecting strip conductor 18a with U shape section is placed on the heat reserving layer 5 and a concrete layer 19, a mortar layer 20 are provided on the bent plate 18 forming a floor further covered with a carpet 21. When hot air is blown in the heat reserving layer 5 by means of a blower, the crushed stones 4 are heated by the hot air gradually raising the temperature thereof to reserve heat in said layer 5. When the hot air supplied for said layer 5 is stopped, the high temperature air rises upward through the crushed stones 4 due to the natural convection of the air in said layer 5 because of the heat insulated bottom surface and side walls while the heat of the air may be radiated in the room through the concrete layer 19, the mortar layer 20 and the carpet 21 performing the floor heating in the room.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a heat storage tank for floor heating that can store heat generated by hot air and radiate the heat through a floor surface by heat conduction.

[Technical background of the invention and its problems] Recently, various heating devices that utilize solar heat have been proposed from the viewpoint of energy saving.

In other words, for example, by installing a heat storage tank on the floor of a house,
Warm air heated by solar heat through a heat collector, etc. is sent to the heat storage tank using a blower, and the heat is temporarily stored in the heat storage tank. Supply air and heat it there.

It has been proposed to heat the room by supplying the hot air into the room.

FIG. 1 is a perspective view showing the principle of the heat storage tank,
A heat storage layer 5 is formed between a hot air inlet plenum 1 and a hot air outlet plenum 2 using the foundation of a building by filling a large number of crushed stones 4 through a wire mesh 3°3. Therefore, the hot air heated by solar heat through the heat collector etc.
An opening (not shown) provided in the side wall of the hot air inlet plenum 1, which is supplied to the hot air inlet plenum 1 via the inlet 1a.
The air flows into the heat storage layer 5 from the inside of the heat storage layer 5, and while flowing through the heat storage layer 5 toward the hot air outlet plenum 2, heat is applied to the heat storage layer 50 and crushed stones 4 to perform a heat storage effect, while heat is applied to the heat storage layer 5. The air flows into the warm air outlet plenum 2 through the opening 2& of the hot air outlet plenum 2, and is further circulated 31J through the outlet to the air heating section provided with a heat collector and the like.

Further, during heating, indoor air is forcibly supplied into the room through the warm air volume lobe air inlet blemish 1, thereby heating the room.

By the way, the heat storage tank having the heat storage part as described above is generally arranged under the floor as described above.

That is, the heat storage layer 5 is mounted on the bottom wall 7 provided with the heat insulating layer 6, and the sides thereof are surrounded by the side wall 10 having the heat insulating layer 9 to prevent heat radiation, and the upper part is provided with the heat insulating layer 11a, A heat storage tank is formed by interposing air sealing with the upper wall 12 with the upper wall 12 interposed, and
3. A floor surface consisting of joists 14, parquet plywood 15, etc. is placed.

Therefore, in such books, the heat from the heat storage tank is not applied directly to the floor surface, and when heating the room, the indoor air is forced to flow through the heat storage tank, and the warm air is supplied indoors. Therefore, power for the blower is always required, and there are problems such as not necessarily being able to fully achieve the purpose of energy saving.

[Purpose of the invention]

In view of these points, the present invention is designed to heat the room by applying heat to the floor through heat conduction from the upper part of the heat storage tank and radiating the heat into the room from the floor, without requiring a blower during heating. The purpose of the present invention is to provide a heat storage tank for floor heating.

[Summary of the invention]

In the present invention, the heat storage layer is a heat conductive bent plate provided with a large number of protrusions having a U-shaped cross section on the upper surface of the heat storage layer in which a heat storage material is accumulated between a hot air inlet plenum and an outlet plenum.

[Embodiments of the invention].

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 3 is a longitudinal partial side view of the heat storage tank of the present invention,
A large number of crushed stones 4 forming a heat storage layer 5 are stacked on a bottom plate 17 disposed on a heat insulating layer 16.

Above the heat storage layer 5 made of the crushed stones 4, a heat conductive bending plate 18 having a large number of six planes 8a with a U-shaped cross section is placed so as to be in contact with the crushed stones 4, and its outer periphery is a heat insulating plate (not shown). It is supported by side walls with timber. A concrete layer 19 is formed by pouring concrete onto the bending plate 18, and a mortar layer 2 is placed on top of the concrete layer 19.
0 is provided to form a floor, and a carpet 21 can be laid on the upper surface of the floor.

In this way, warm air that collects solar heat, etc. is sent to the heat storage layer 5 using a blower.
When the air is circulated through the air, the crushed stones 4 constituting the heat storage layer 5 are heated by the warm air, and the temperature gradually rises, thereby storing heat. Therefore, when the supply of hot air to the heat storage layer 5 is stopped during heating, since the bottom and side walls are insulated, high-temperature air flows between the crushed stones 4 due to natural convection of the air within the heat storage layer 5. The heat rises and is applied to the bending plate 18, and further dissipated into the room via the concrete layer 19, mortar layer 20 and carpet 21, thereby providing floor heating in the room.

By the way, in FIG. 4, the bending plate 18 is placed so that the convex strip 1.8a of the bending plate 18 is perpendicular to the flow direction of the hot air in the heat storage layer 5. The distribution of the hot air is prevented by the protruding strips 18a on the upper surface of the heat storage layer 5, and all of the hot air flows within the heat storage layer 5 at a substantially uniform flow rate over the entire cross section of the flow path, resulting in a substantially uniform temperature distribution within the layer. is obtained. Moreover, since the member supporting the load of the floor material such as the concrete layer is constituted by the bending plate 18 having the convex stripes 18a, its load supporting capacity can be enhanced, and furthermore, the cross-sectional shape of the bending plate 18 Since the heat transfer area is large, the amount of heat transferred from the heat storage layer 5 to the floor surface increases, and effective floor heating is performed.

'Furthermore, in FIG.
In this case, the hot air can flow through the gap between the protrusions 18a, so the flow velocity increases in the upper part of the heat storage layer, and the heat dissipation part (upper part) of the heat storage layer increases. ), the more heat can be stored, and even when the amount of heat collected is small compared to the amount of heat stored, heating can be performed effectively.

〔Effect of the invention〕

As explained above, in the present invention, a heat conductive bending plate having a large number of U-shaped protrusions on one side is placed on the upper surface of the heat storage layer so as to be in contact with the heat storage layer. Depending on the shape, the heat transfer area is large, and the heat transfer from the heat storage layer to the floor surface can be improved, and the floor heating effect can be improved.

Moreover, since the floor is supported by the bending plate, it can have sufficient strength to withstand the load, and when constructing the floor, ordinary concrete can be poured on the bending plate, making it easy to manufacture. play.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the principle of a heat storage tank, FIG. 2 is a sectional view showing the installation state of a conventional heat storage tank, and the third factor is a vertical partial side view of the heat storage tank of the present invention. FIG. 5 is a diagram showing an embodiment of the present invention, respectively. DESCRIPTION OF SYMBOLS 1... Hot air inlet plenum, 2... Hot air outlet plenum, 4... Crushed stone, 5... Heat storage layer, is... Bent plate, L8 a-convex strip, 19... Concrete layer . Applicant's agent Kiyoshi Inomata

Claims (1)

[Claims] A heat conductive bent plate with a large number of protrusions having a U-shaped cross section is placed in contact with the heat storage layer on the top surface of the heat storage layer where heat storage material is accumulated between the hot air inlet plenum and the outlet plenum.