JPH11211119A - Floor heating panel - Google Patents

Abstract

(57) [Problem] To provide a floor heating panel capable of reliably preventing local overheating of the floor heating panel. A plurality of projections extending upward are provided on an upper surface of a base material of a floor heating panel. When the floor heating panel 1 is placed in the floor heating device 2, the protrusion 18 regulates the distance between the floor heating panel 1 and the upper surface 13 a of the base material 13 of the floor heating panel 1 and the floor plate 3.
An air layer 19 is provided between the floor heating panel 1 and the floor heating panel 1 for equalizing heat in the horizontal direction. The overheat prevention thermo 14 is arranged facing the air space 19. The uniform heating of the floor heating panel 1 in the horizontal direction is achieved. Transmission to the overheat prevention thermo 14 via the air layer 19 is achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor heating panel used for, for example, an electric floor heating device, and more particularly to a floor heating panel using a foamed resin as a base material.

[0002]

2. Description of the Related Art For example, in an electric floor heating apparatus, a method is known in which a plurality of floor heating panels provided with heater wires are arranged on the lower surface of a floor material for easy handling. . Such a floor heating panel includes a heater wire as a heat source and a base material holding the heater wire on the upper surface. Conventionally, a foamed resin having a high heat-insulating effect, particularly a foamed polyurethane having a high heat-insulating effect, has been used as a substrate.

[0003]

However, particularly when a foamed resin is used as the base material, for example, when a floor cushion or the like is placed in close contact with the upper surface of the floor material during floor heating operation, the floor material will It is also conceivable that the heat transfer on the side worsens and the floor heating panel heats up locally. In view of the above, conventionally, an aluminum foil (thickness of about 50 μm) has been interposed on the upper surface of the base material of the floor heating panel so as to level the temperature in the horizontal direction, thereby preventing local overheating of the floor heating panel. Although the thickness of the aluminum foil is very small, it is not possible to achieve a sufficient uniform heat in the horizontal direction. It is thought that even if an aluminum sheet having a sufficient thickness is interposed in place of the aluminum foil, the heat can be more evenly distributed. However, the use of the aluminum sheet having a sufficient thickness can increase the size and cost of the floor heating panel. However, it was not possible to use a sufficiently thick aluminum sheet.

In general, in floor heating using an electric heater, overheating is prevented by using overheating prevention thermos disposed at predetermined intervals in a base material of a floor heating panel. If the distance between the portion where the temperature rises and the overheat prevention thermometer is too large, the thermostat does not work, and there is a possibility that local overheating cannot be prevented. The present invention
The present invention has been made in view of the above problems, and has as its object to provide a floor heating panel capable of reliably preventing overheating generated locally in the floor heating panel.

[0005]

According to a first aspect of the present invention, there is provided a floor heating panel disposed below a floor material, wherein the floor heating panel includes a foamed resin base material and the floor material. And a heat source that transmits heat to the base material.
A floor heating panel characterized in that a projection for regulating an interval between a base material and a floor material and forming an air layer therebetween is provided.

In this configuration, since an air layer having a predetermined thickness is formed between the base material and the flooring material, an object is locally placed upward on the flooring material, for example. Even if the heat radiation becomes worse, the heat is transferred by using the air layer as a medium, so that the heat can be leveled in the horizontal direction. Therefore, a heat escape area is always maintained, and local overheating of the panel can be prevented.

On the other hand, if the thickness of the air layer is too thin, it is not possible to achieve uniform heat in the horizontal direction. Conversely, if the thickness of the air layer is too thick, the speed of heat transfer to the floor material side will be reduced, and Since the size of the heating panel becomes large, the thickness of the air layer is 2
４4 mm is preferable, and the height of the projection is 3-5 に は.
mm is preferable. This is because when the floor material is placed on the projection, the projection elastically contracts, for example, by about 1 mm.

Conventionally, when a floor heating panel is placed in a floor heating apparatus at a site, a gap between the floor material and the floor heating panel is adjusted by adjusting the installation height of at least one of the floor material and the floor heating panel. This adjustment was troublesome. On the other hand, in the present invention, since the protrusion for regulating the gap is provided on the upper surface of the base material in advance, an air layer having a required thickness can be obtained without any adjustment work at the installation site.

In this case, it is preferable that the air layer is continuous over substantially the entire upper surface of the floor heating panel. In addition, it may be continuous with an adjacent floor heating panel. A floor heating panel according to a second aspect of the present invention is the floor heating panel according to the first aspect, wherein a heat equalizing sheet is disposed on an upper surface of the base material. In this configuration, since the uniform heat in the horizontal direction can be achieved by both the heat equalizing sheet and the air layer, local overheating can be reliably prevented.

A floor heating panel according to a third aspect of the present invention is the floor heating panel according to the first or second aspect, wherein the foamed resin contains foamed polypropylene. In this configuration, since the air layer can also enhance the heat insulation effect on the underside of the floor, it is possible to apply a lightweight and low-cost foamed polypropylene, which is slightly inferior to the foamed polyurethane conventionally used, but is lightweight. Weight and cost can be reduced.

According to a fourth aspect of the present invention, in the floor heating panel according to any one of the first to third aspects, the heat source includes an electric heater, and an overheat prevention thermo that faces the air layer is provided on an upper surface of the base material. It is characterized by having. In the configuration of the present invention, since heat is transferred to the overheat prevention thermostat through the air layer, a local rise in temperature can be reliably prevented.

[0012]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a partially cutaway perspective view showing a main part of a room in which a floor heating device using a floor heating panel according to an embodiment of the present invention is installed. With reference to FIG. 1, in this floor heating device 2,
An electric heater 4 is accommodated below the floor plate 3 as a floor material, and the heat of the electric heater 4 directly heats the floor plate 3 to heat the floor surface.

The floor heating device 2 includes an electric heater 4, a relay box 5 as a switchgear box containing a relay (not shown), and a controller 6 for controlling the temperature of the electric heater 4. The electric heater 4 includes a plurality of floor heating panels 1. The floor heating panel 1 has a plate shape, and a heater wire 7 (see FIG. 2) serving as a heat source opened on the upper surface of the floor heating panel 1 directly heats the floor panel 3.

The floor heating panel 1 is not usually arranged at the periphery of the floor where the need for heating is scarce.
It is arranged in a range occupying about 70% or less of the front floor area. FIG. 2 is an enlarged cross-sectional view taken along the line II in FIG. Referring to FIG. 1 and FIG. 2, in general, when a floor is constructed, a large number of joists 8 are stretched below a floor plate 3 in parallel at a predetermined interval, and the building is generally overlaid. The floor plate 3 is arranged. The floor plate 3 is formed of a slender rectangular plate member 10, and the floor is configured by butt-laying the plate members 10 one after another in a phased manner.

A rectangular timber having a rectangular cross section is generally used for the joist 8, and a heat insulating material 11 and a bottom plate 12 are attached to a lower portion of the side of the joist 8. Floor heating panel 1
Is housed in a housing space defined by the bottom plate 12 and the floor plate 3 between the joists 8, 8 adjacent to each other. Further, the heat insulating material 11 is interposed between the floor heating panel 1 and the bottom plate 12, and prevents the heat of the floor heating panel 1 from escaping downward.

Referring to FIGS. 2 and 3, floor heating panel 1 is provided with, for example, a pair of heater wires 7 arranged in a parallel meandering manner, and a base material 13 holding heater wires 7 on the upper surface. And an aluminum foil 15 as a soaking sheet. Upper surface 1 of substrate 13
3a, a meandering accommodation groove 16 for accommodating the heater wire 7 and an accommodation recess 17 for accommodating the overheat prevention thermo 14 are provided. The heater wire 7 is housed in the housing groove 16 in a meandering manner several times, and
Warm. Referring to FIG. 4, in this state, aluminum foil 15 is arranged on the upper surface 13 a of base material 13 of floor heating panel 1 except for protrusion 18. The thickness of the aluminum foil 15 is, for example, 50 μm.

The upper surface 13a of the base material 13 of the floor heating panel 1 is provided with a plurality of projections 18 extending upward. The projections 18 have a substantially rectangular parallelepiped shape, and all have almost the same height. When the floor heating panel 1 is disposed in the floor heating device 2, the protrusion 18 regulates the distance between the floor heating panel 1 and the floor panel 3, and the floor heating is performed between the upper surface 13 a of the base material 13 of the floor heating panel 1 and the floor panel 3. Air layer 19 for equalizing the temperature of panel 1 in the horizontal direction
Is provided. The thickness of the air layer 19 is 2 to 4
mm is preferable, and for this purpose, the protrusion 1 in a free state is used.
Preferably, the height of 8 is 3 to 5 mm. When the floor heating panel 1 is disposed in the floor heating device 2, the projection 18
Is, for example, 1 m in comparison with the weight before placing
This is because the elastic contraction is about m. Therefore, by setting the height of the protrusion in consideration of the amount of contraction in advance, the thickness of the air layer 19 can be easily set to a preferable range.

The air layer 19 is provided continuously between the adjacent joists 8. The heater wire 7 is arranged as shown by a two-dot chain line in FIG. 3, and the protrusion 18 is arranged except where the heater wire 7 and the overheat prevention thermo 14 are arranged. The pair of overheat prevention thermos 14 are arranged at a predetermined interval (for example, 600 mm) from each other in a substantially central portion near both ends in the longitudinal direction of the floor heating panel 1. The overheat prevention thermo 14 is arranged facing the air layer 19,
Temperature control is performed based on the temperature.

In the present embodiment, the following operational effects are obtained. That is, the upper surface 13a of the base material 13 of the floor heating panel 1
Since the air layer 19 having a required thickness is formed between the floor board 3 and the floor board 3, even when an object is placed in close contact with the floor board 3 and the heat radiation locally upwards is poor, Air space 19
Is used as a medium to transfer heat, so that the heat can be leveled in the horizontal direction. Therefore, the escape of heat is always maintained,
Local overheating of the floor heating panel 1 can be prevented. In addition, since the uniform heat in the horizontal direction can be achieved by both the aluminum foil 15 and the air layer 19, local overheating can be more reliably prevented.

Further, since the projections 18 for regulating the space are provided on the upper surface 13a of the base material 13 in advance, when the floor heating panel 1 is arranged in the floor heating device 2, it is not necessary to perform any thickness adjustment on site. The thickness of the air layer 19 can be easily set in a preferable range. In addition, since the air layer 19 can enhance the heat insulating effect on the underside of the floor, it is possible to use a lightweight and low-cost foamed polypropylene, which is somewhat inferior to the foamed polyurethane conventionally used, but is lightweight. Weight and cost can be reduced.

Further, since heat is transferred to the overheat prevention thermo 14 through the air layer 19, the area covered by the overheat prevention thermo 14 can be made wider than before, so that the local temperature rise can be further reduced. It can be reliably prevented. Further, since the projections 18 are provided so as to project from the upper surface 13a of the base material 13 of the floor heating panel 1 and are formed of an elastic foamed polypropylene, the floor heating panel 1 can be arranged in the floor heating device 2 when the floor heating panel 1 is disposed. It is possible to cope with a slight variation in installation dimensions that occurs.

Next, another embodiment will be described. FIG. 5 is an enlarged plan view of a main part of a floor heating panel according to another embodiment of the present invention. Referring to FIG. 5, floor heating panel 1
A projection 20 having a substantially rectangular parallelepiped shape is provided as a projection on the upper surface 13a of the base material 13. The hatched portions in FIG. When the floor heating panel 1 is disposed in the floor heating device 2, the upper surface of the projection 20 contacts the floor plate 3,
The air layer 19 is an area partitioned by a plurality of convex portions 20 into a vertical and horizontal lattice. The accommodation groove 16 and the accommodation recess 17 provided on the upper surface 13 a of the base material 13 of the floor heating panel 1 are arranged at positions corresponding to the air layers 19. Therefore, the heater wire 7 is arranged at the position indicated by the two-dot chain line in FIG. 5, and the overheat prevention thermo 14 is arranged at the position surrounded by the dotted line.

According to this embodiment, the following operation and effect are exhibited in addition to the operation and effect of the above-described embodiment. That is, since the amount of contact between the protruding portion 20 and the floor plate 3 is large, the amount of deformation of the protruding portion 20 is significantly smaller than in the case of the above embodiment. Therefore, since the thickness of the air layer 19 can be determined only by the height of the protrusion 20 before construction, the thickness of the air layer 19 can be set with high dimensional accuracy.

In the above two embodiments, the floor heating panel 1 used in the floor heating device 2 of the joist dropping type has been described as an example. However, the present invention is not limited to this. A floor heating panel used in a floor heating device of a type using a joist may be used. Further, an aluminum sheet having a thickness greater than that of the aluminum foil can be used as the heat equalizing sheet.

It goes without saying that various modifications are possible within the scope of the claims of the present invention.

[0026]

According to the first aspect of the present invention, since an air layer having a predetermined thickness is formed between the base material and the floor material, an object is placed on the floor material in close contact. Even when the heat radiation locally deteriorates upward, the air layer serves as a medium to transfer the heat, thereby making it possible to equalize the heat in the horizontal direction. Therefore, a heat escape area is always maintained, and local overheating of the panel can be prevented.

Further, when the floor heating panel is disposed in the floor heating apparatus at the site, the protrusion for regulating the interval is provided in advance on the upper surface of the base material, so that no adjustment work is required, and The thickness of the air layer can be obtained. Claim 2
In the described invention, since the heat can be leveled in the horizontal direction by both the heat equalizing sheet and the air layer, local overheating can be reliably prevented.

According to the third aspect of the present invention, since the air layer can also enhance the heat insulating effect on the underside of the floor, it is possible to apply a foamed polypropylene which is lighter and less expensive than the conventionally used foamed polyurethane. Weight and cost can be reduced. Claim 4
In the described invention, since heat is transferred to the overheat prevention thermostat through the air layer, local temperature rise can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a main part of a room in which a floor heating device using a floor heating panel according to an embodiment of the present invention is installed.

FIG. 2 is an enlarged cross-sectional view taken along a line II in FIG.

FIG. 3 is a perspective view of a floor heating panel showing an arrangement of a heater wire, an overheat prevention thermostat, and a protrusion.

FIG. 4 is an enlarged view of a main part of FIG. 2;

FIG. 5 is an enlarged plan view of a main part of a floor heating panel according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor heating panel 2 Floor heating device 7 Heater wire 14 Overheat prevention thermo 15 Aluminum foil 18 Projection 19 Air layer 20 Projection

Claims (4)

[Claims] An underfloor heating panel disposed below a flooring (3).
In (1), a foamed resin base material (13) and a heat source (7) for transmitting heat to the floor material (3) are provided, and an upper surface (13a) of the base material (13) is provided on the upper surface (13a) of the base material (13).
The distance between the base material (13) and the floor material (3) is regulated to
A floor heating panel comprising a projection (18) for forming an air space (19) between the floor heating panel and the floor heating panel. 2. A heat equalizing sheet (1) is provided on the upper surface (13a) of the substrate (13).
The floor heating panel according to claim 1, wherein (5) is arranged. 3. The floor heating panel according to claim 1, wherein the foamed resin contains foamed polypropylene. 4. The heat source (7) includes an electric heater (7), and an overheat prevention thermo (14) facing the air layer (19) is provided on an upper surface (13a) of the base material (13). The floor heating panel according to any one of claims 1 to 3, wherein: