JPH06281174A - Floor heating panel - Google Patents

Abstract

PURPOSE:To perform both sound shielding and heating functions, save space, reduce manhours required for panel installation and improve thermal efficiency. CONSTITUTION:A floor panel 10 has formed into a layer a laminate base plate 12, a decorative sheet 11 thereon and a sound shielding material 13 made of rubber, synthetic resin or nonwoven fabric on the underside of the base plate. A plywood base plate 12 is provided on the upper surface with a shallow recess part 12a having a flat bottom and a surface heating body 14 consisting of electrically conductive rubber or synthetic resin is fitted into the recess part 12a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating floor panel having a built-in heater.

[0002]

2. Description of the Related Art As a floor heating system for buildings, an insulating material layer is provided on a concrete floor, a radiating pipe (pipe coil) for flowing hot water is laid on the layer, and a finishing floor material is applied. It is known that the above-mentioned heat radiating pipe is laid between the joists of a wooden house, a heat insulating material is applied to the lower side, and a floor board is laid on the top of the joists. Since the heat radiation pipe is required, the installation space is required, the number of man-hours required for construction is increased, and the heat efficiency is lowered when a floor board having a sound insulating property is used.

Further, a plate made of a hard urethane foam having a surface heating element attached to the upper surface is fixed between the joists so as to fill the space between the joists, and a floor board is put on the board.
It is known that the above surface heating element is energized to generate heat, but in this case, it is necessary to provide the above urethane foam plate under the floor plate, so a mounting space for that is required. In addition, there is a problem that the number of man-hours at the time of construction increases, and when a floor board having a sound insulating property is used, the thermal efficiency decreases.

[0004]

DISCLOSURE OF THE INVENTION According to the present invention, by embedding an electrothermal thin surface heating element in a sound insulating floor plate itself, a space for mounting parts other than the floor plate such as a boiler, a heat radiating pipe, and urethane foam is provided. It is almost unnecessary, the man-hours required for construction can be reduced, and the decorative panel of the floor panel is directly heated to improve the thermal efficiency.

[0005]

A floor panel for heating according to the present invention comprises a plywood substrate with a decorative plate on the upper surface and rubber on the lower surface.
A floor panel formed by laminating sound insulation materials made of synthetic resin or non-woven fabric, respectively, and having a flat bottom and a shallow recess formed on the upper surface of the substrate, and the surface heating element made of conductive rubber or synthetic resin in the recess. Is fitted, and a conductor wire for connecting a power source is connected to the surface heating element.

The surface heating element used in the present invention includes synthetic resin such as polyethylene glycol, rubber such as silicone rubber and neoprene rubber, carbon black, graphite,
The volume resistivity is preferably 1 to 10 ⁵ Ω · cm by mixing a solid conductive agent such as metal powder, and the obtained conductive resin or rubber is molded into a thin sheet and cut into a desired size. Sheet-shaped heating element, and metal foils for electrodes are attached along both side edges of the heating element or on both front and back surfaces, and protective sheets are laminated on both front and back surfaces to form a thickness of 0.4 to
The heating element is 1.0 mm, but the heating element is 100 parts by weight of polyethylene glycol and 20 to 20% of carbon black.
A self-temperature controllable composition comprising 80 parts by weight, particularly 30 to 50 parts by weight is preferable. The protective sheet is preferably a laminate of a nonwoven fabric made of polyethylene terephthalate fiber having excellent heat resistance and a film made of the polyethylene terephthalate, which are laminated in this order.

The substrate for supporting the above-mentioned surface heating element is made of an ordinary plywood for floor boards, and its thickness is preferably 3 to 12 mm. A concave portion having a flat bottom is formed on the surface of the substrate at a depth substantially equal to the thickness of the surface heating element, and the surface heating element has a surface height substantially equal to the surface height of the substrate in the concave portion. Be fitted. Then, a normal decorative plate including a projecting plate and a plywood is laminated on the upper surfaces of the substrate and the surface heating element.

The sound insulating material laminated on the lower surface of the substrate is made of rubber, synthetic resin or non-woven fabric, and preferably has a thickness of 3
~ 12 mm. As rubber, natural rubber, S
A foam made of a synthetic rubber such as BR or EPDM, and a synthetic resin made of a synthetic resin such as polycarbonate, PVC, nylon, polypropylene or polystyrene are preferable.

[0009]

Function: By applying a voltage between the ends of the sheet-shaped heat generating element in the lengthwise direction or the widthwise direction, or between the front and back surfaces of the heat generating element, a current flows through the heat generating element to generate Joule heat. By appropriately setting the volume resistivity and the applied voltage of, the decorative plate can be formed as a low temperature heating radiator plate. There is a sound insulating material below the heating element, and since the upper surface of the heating element contacts a thin decorative plate through the synthetic synthetic fiber non-woven fabric and synthetic resin film, it functions as both sound insulating and heating. Moreover, the thermal efficiency is good.

When a self-temperature controlling element is used as the above-mentioned heating element, when the temperature rises due to energization, the carbon black particle intervals increase and the energization automatically stops. It is possible to omit the temperature control device.

[0011]

EXAMPLE As shown in FIG. 1, a square floor panel 10 having a side of 350 mm was manufactured. 11 is a decorative plate having a thickness of 3 mm, which is composed of a veneer and plywood, 12 is a 5 mm-thick plywood substrate,
Reference numeral 13 is a sound insulating material made of soft foam rubber and having a thickness of 4 mm.
A depth of 0.4 mm at the center of the upper surface of the substrate 12 and a side length of 3
A 00 mm square recess 12a is provided.
A surface heating element 14 having the same shape as the recess 12a is fitted in a.

The surface heating element 14 is, as shown in FIG.
A self-temperature controllable heating element 1 obtained by molding a conductive resin having a volume resistivity of 300 Ω · cm, which is a mixture of polyethylene glycol and carbon black, into a sheet having a thickness of 250 μm.
A non-woven fabric 16 having a thickness of 25 μm made of polyethylene terephthalate fiber and a film 17 having a thickness of 50 μm made of polyethylene terephthalate are sequentially laminated on both upper and lower sides of 5, and they are integrated by adhesion to have a total thickness of about 0.4.
The ribbon-shaped electrodes 18 made of copper foil are attached to the left and right side edges of the heating element 15 in a rectangular shape.

A main line 19b is connected to each of the left and right electrodes 18 through a branch line 19a of a power supply connecting wire, and a connector 20 is connected to both ends of the main line 19b. An end portion of the branch line 19a on the main line 19b side is connected. , Through a hole (not shown) provided in the corner of the recess 12a of the plywood substrate 12 (see FIG. 1) to project to the lower side of the substrate 12, and the projecting end is located on the left front side of the sound insulating material 13. Groove 13 provided parallel to one side
The connector 20 is fixed to both ends of the groove 13a by being connected to a main wire 19b (not shown) of a power supply connecting wire which is passed through a.

A large number of the floorboard panels 10 are laid in close contact with each other. At this time, two adjacent floorboard panels 10 and 10 are connected by a connector 20, and the floorboard panel 10 at one end is connected to the connector 20. By connecting the power supply,
A large number of heating elements 15 are connected in parallel to the above power source to generate heat and heat the upper decorative plate 11 to heat the room.
Then, when the temperature of the heating element 15 becomes too high, the energization is cut off by the temperature adjusting function of the heating element 15 itself.

The heating element 15 shown in FIG. 3 has electrodes 18A having the same shape as the heating element 15 adhered to both upper and lower surfaces thereof. Connector 20 via 19b
Are connected to each other, and the non-woven fabric 16 and the film 17 are sequentially laminated on the upper and lower surfaces thereof. The heating element 15 of FIG. 3 can be operated at a lower voltage than the example of FIG.

The floor panel 30 of FIG. 4 is rectangular (width 90
0 mm, length 1800 mm) is an example, and the decorative plate 3
1, a substrate 32 and a sound insulating material 33 are laminated (see FIGS. 4 and 5), four rectangular recesses 32a are arranged in parallel on the upper surface of the substrate 32, and the surface heating element 34 is fitted into each recess 32a. Has been. Then, a branch line 35a of a power source connecting conductor connected to an electrode (not shown) of each surface heating element 34
Is drawn out in the width direction and has two main lines 35b in the length direction.
Are connected in parallel to the main line 35b and the connector 3 is
6 is connected.

However, the end of the branch line 35a on the main line 35b side is passed through the groove 32b and the hole 32c (see FIGS. 4 and 5) which are provided in succession following the corner of the recess 32a on the substrate 32. , A vertical groove 33a that is formed in a recess on the upper surface of the sound insulating material 33 in parallel with the long side, and is connected to a main wire 35b of a power supply connecting conductor that is passed through the vertical groove 33a.
Both ends of are connected to connectors 36 fixed to both ends of the vertical groove 33a, and the main lines 35b of the power supply connecting conductors of the two adjacent floor plate panels 30 are connected to each other by the connectors 36.

[0018]

According to the first aspect of the present invention, a decorative board is laminated on the upper surface of a plywood substrate and a sound insulating material is laminated on the lower surface thereof, and a conductive rubber is formed in the recess formed on the upper surface of the substrate. Or, since the surface heating element made of synthetic resin is fitted, by laying this heating floor panel indoors and connecting the surface heating element to the power source, this surface heating element heats the upper decorative plate. Then, it is formed into a low temperature heat dissipation plate and functions both as sound insulation and heating. Moreover, since the sound insulating material exists below the surface heating element and the upper surface of the surface heating element contacts the lower surface of the thin decorative plate, the thermal efficiency is good. The floor panel for heating of the present invention is one in which a thin surface heating element is embedded in a plywood substrate that constitutes the panel. It is saved and the construction work is easy.

The invention described in claim 2 uses a heating element having self-temperature controllability in the surface heating element of the invention described in claim 1, and requires a temperature adjusting device such as a thermostat. Therefore, the mounting space can be further saved.

[Brief description of drawings]

FIG. 1 is a perspective view in which a part of the embodiment is broken.

FIG. 2 is an exploded sectional view of the surface heating element of FIG.

FIG. 3 is a cross-sectional view of another example of the heating element.

FIG. 4 is a partially cutaway plan view of another embodiment.

5 is a cross-sectional view taken along the line AA of FIG.

6 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

10, 30: floor panel, 11, 31: decorative panel, 12,
32: plywood substrate, 12a, 32a: recess, 13: 3
3: Sound insulation material, 14, 34: Surface heating element, 15: Heating element,
16: Nonwoven fabric, 17: Film, 18, 18A: Electrode,
19a, 19b, 35a, 35b: power supply connecting conductors, 2
0, 36: Connector.

Claims (2)

[Claims] 1. A floor panel in which a decorative board is laminated on the upper surface of a plywood substrate and a sound insulating material made of rubber, synthetic resin, non-woven fabric or the like is laminated on the lower surface, and the bottom surface is flat and shallow on the upper surface of the substrate. A heating floor panel characterized in that a concave portion is formed, a surface heating element made of conductive rubber or synthetic resin is fitted into the concave portion, and a conductor for power supply connection is connected to the surface heating element. 2. The floor panel for heating according to claim 1, wherein the heating element of the surface heating element is a heating element composed of polyethylene glycol and carbon black and having a self-temperature controllability.