JP2002022190A - Heating floor and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently heat the floor of the whole room with small power consumption. SOLUTION: A heating floor is composed of a plurality of heating panels 5 which are laid in matrix form on a subfloor and consist of heat insulating materials and planar heating elements stacked on the surfaces of those heat insulating materials, and surface finishing materials which are laid on the surfaces of the heating panels 5. Then, the plural pieces of heating panels 5 are divided into a heating panel group A and a heating panel group B, and also power supply cables CA and CB of separate systems are connected, respectively, to the heating panel group A and the heating panel group B being divided, and the floor heating by the heating group A and that by the heating group B are performed alternately.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating floor and a control method therefor.

[0002]

2. Description of the Related Art Conventionally, when floor heating is applied to a detached house or an apartment house, a heat insulating material is arranged on a joist installed on a floor base, and then a heating element is arranged on the heat insulating material. In addition, construction such as electrical wiring is performed, and then decorative floor boards are laid.

[0003] In such a heated floor, usually, the entire floor is heated simultaneously by energizing all heating elements, or the partial floor heating is performed by energizing only some heating elements. It is configured to be controllable.

[0004]

However, in the above-mentioned floor heating, when the partial floor heating in which only a part of the heating elements is energized is performed, the energized portion (floor heating portion) and the non-energized portion are not heated. A clear temperature boundary occurs in the (non-heating part), lowering the heating efficiency of the entire room, and adding breakers to cope with simultaneous simultaneous floor heating that consumes a large amount of power, which increases costs. There was a problem of bulking.

[0005] Further, electrical connection positions of adjacent heating elements,
For example, since the connector position is fixed, the connection position is limited, and furthermore, the connection position between the adjacent heating floors is fixed, so that it is difficult to absorb the positional deviation between the heating floors which is common during construction. was there.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a heating floor capable of efficiently heating the entire room with little power consumption and a control method therefor.

[0007]

A heating floor according to the present invention comprises a heat insulating material and a sheet heating element integrally laminated on the surface of the heat insulating material, and is laid in a matrix in the vertical and horizontal directions of the floor base surface. A heating floor comprising a plurality of heating panels and a surface finishing material laid on a surface of the heating panel, wherein the plurality of heating panels are divided into at least two heating panel groups, and each heating panel The planar heating elements of the group are connected to power supply cables of different systems, respectively.

According to the present invention, a plurality of heating panels laid in a matrix are divided into at least two heating panel groups, and the sheet heating elements of each heating panel group are connected to power supply cables of different systems. It has been
By heating the floor with a time lag between each system, the amount of current flowing simultaneously and the maximum instantaneous current are reduced, eliminating the need for additional breakers, reducing costs, and reducing floor heating and non-floor heating. A clear temperature boundary does not occur in the portion, and the entire room can be uniformly heated.

In the present invention, if the plurality of heating panels are divided into at least two heating panel groups by a plurality of columns or rows of heating panels having one or more rows or one or more rows of heating panels, The floor laying work is simplified, and the work can be performed in a short time. Therefore, the floor laying work is preferable, but it may be divided into an arbitrary system such as a checkered pattern.

In the present invention, a cutout is formed on the back surface of the heat insulating material of each of the heating panels, a housing is provided in the cutout, and a connection cable for connecting a sheet heating element of one heating panel group. However, when housed in the housing provided in the heat insulating material of another heating panel group, at the time of construction, a groove is formed on the back surface of the heat insulating material of each heating panel at the location where the connection cable is wired, and the housing is arranged However, since the connection cable only needs to be stored in the housing, electrical wiring can be performed in parallel with the installation of the heating floor, and the design of the heating floor corresponding to the electrical wiring is not required. The cost can be reduced, and the displacement of the heating floor at the time of construction can be easily absorbed. Furthermore, since the connection cable is housed in the housing, no direct load acts on the connection cable and the connection cable is not exposed, so that the connection cable can be used for a long time.

In this case, the groove formed in the heat insulating material of the heating panel only needs to be deeper than the thickness in which the housing for housing the connection cable can be provided.

[0012] It is preferable that the unevenness-adjusting material is laminated on the back surface of the heating panel because the unevenness of the floor base surface can be adjusted. In this case, if a soft resin foam is used as the unevenness adjusting material, the soundproof performance will be excellent.

The method of controlling a heating floor according to the present invention comprises
3. The heating floor according to item 3, wherein a power supply voltage is alternately supplied to the planar heating elements of each heating panel group after a set time.

According to the present invention, the floor heating by each heating panel group is alternately performed with a set time difference, so that the current flowing simultaneously and the instantaneous maximum current can be reduced, and it is not necessary to add a breaker or the like. The cost can be reduced, and a clear temperature boundary between the floor heating portion and the non-floor heating portion does not occur, so that the entire room can be uniformly heated.

The surface finishing material used in the present invention is not particularly limited as long as it does not cause breakage or damage easily under a normally applied load.
Plywood, particle board, high-density fiber board (hereinafter “H
DF ". ), Wood materials such as medium density fiberboard (hereinafter, referred to as “MDF”); thermoplastic resins such as polyethylene, polypropylene and polyvinyl chloride; thermosetting resins such as polyester and epoxy resin; Tile; linoleum; stone, etc., and a fiberboard veneer such as HDF or MDF or a laminate is preferable in terms of soundproofing, workability, and texture.

If necessary, a surface decorative material such as a veneer, a synthetic resin or a synthetic resin foam sheet, decorative paper, a synthetic resin impregnated sheet, etc. is bonded and laminated to the surface finishing material, for example, woodgrain-like or marble-like. May be mounted on the vehicle. In this case, it is preferable to bond and laminate on both surfaces of the surface finishing material so that warpage does not occur. Further, printing, painting, coloring, coating, and the like may be performed in order to impart designability, woodiness, scratch resistance, and the like.

The above-mentioned surface finishing material may be provided with a concave groove extending in an arbitrary direction on the surface to be laminated with the heat insulating material, thereby further reducing the bending rigidity of the surface finishing material and further improving the soundproofing. It is possible. The shape of the concave groove is usually formed in a U-shape, a V-shape, a U-shape, etc., the groove width is about 1.5 to 2.5 mm, and the groove depth is 0.5 to
1.3 mm.

The above-mentioned surface finishing material may be subjected to processing for a conventionally known joining method, such as a claw or a notch, on all or a part of the periphery thereof.

If the thickness of the surface finishing material is too thin, it is easily broken when walking or placing a heavy object, and if it is too thick, the soundproofing property is reduced.

The planar heating element used in the present invention is not particularly limited. For example, a heating element in which nichrome wires are arranged in a flat plate shape, or a metal plate such as a patterned stainless steel plate is used as the heating portion. Known heating elements such as a heating element and a carbon resin composite can be used. Furthermore, the above-mentioned planar heating element is a self-temperature-controlled heating element (Positive Temperature Coe) in which the resistance value increases with increasing temperature.
fficient thermistor) is preferable because burns due to local abnormal heat generation can be prevented.

It is preferable that a metal thin plate or a metal foil be provided on the surface of the sheet heating element on the side of the lamination surface with the surface finishing material so as to provide uniformity of the heat generating portion and to serve as a ground for emergency. As the metal material, metals such as copper, aluminum, and iron, and alloys thereof can be used. Among them, copper, aluminum and alloys thereof are preferable from the viewpoint of flexibility.

The thickness of the planar heating element is not particularly limited, but is preferably 0.1 to 1 mm including a metal thin plate or a metal foil in consideration of heat generation, flexibility, strength, durability and the like. 0.2 to 0.5 mm is particularly preferred.

The heat insulating material used in the present invention is not particularly limited. However, if the compression modulus is too small, the walking feeling may be impaired.
The compression modulus measured according to No. 20 is 0.392 MP
It is preferably at least a. In addition, if the flexural modulus is too large, the soundproofing performance is reduced, so JIS K 720
Preferably, the flexural modulus measured in accordance with No. 3 is 294 MPa or less.

As such a heat insulating material, for example, a rigid polyurethane foam having an expansion ratio of 5 to 25 times, a polystyrene foam having an expansion ratio of 10 to 30 times, and an expansion ratio of 2 to
A 30-fold polyolefin foam or a thermoplastic resin foam described in Japanese Patent Application Laid-Open No. 10-238091 filed earlier by the present applicant can be mentioned, and the thickness thereof is 3 mm or more and 10 mm or less. .

The thermoplastic resin foam described in Japanese Patent Application Laid-Open No. Hei 10-238091 has a continuous foam layer made of a thermoplastic resin, and a high foam foam made of a thermoplastic resin disposed on at least one surface of the continuous foam layer. And a low-foaming thin film made of a thermoplastic resin covering the outer surface of the high-foaming body, wherein a plurality of high-foaming bodies are thermally fused to each other via the low-foaming thin film.

The resin used for the continuous foamed layer, high foamed body and low foamed thin film constituting such a thermoplastic resin foam is not particularly limited as long as it is a foamable thermoplastic resin. An olefin-based resin such as polyethylene and polypropylene or a mixture thereof is preferred because the resulting thermoplastic resin foam can increase the smoothness. Furthermore, in order to achieve both surface smoothness and prevention of sinking during walking, it is preferable to use high-density polyethylene, homopolypropylene, or a mixture containing at least one of these.

The resin used for the continuous foam layer, high foam body and low foam thin film constituting the thermoplastic resin foam is as follows:
It is not necessary to use the same resin, but it is preferable to use the same resin because it is hard to break when walking or when a heavy object is placed. In this case, it is preferable that the resin used for the high-foamed body and the low-foamed thin film is formed of the same resin in view of adhesiveness.

If the expansion ratio of the thermoplastic resin foam is too low, the weight of the heating floor material cannot be reduced, and if it is too high, the sinking amount of the heating floor material increases. , More preferably 3 to 20 times, even more preferably 7 times.
It is up to 20 times.

For convenience, the reciprocal of the density measured according to JIS K 6767 is regarded as the expansion ratio.

As a method for producing the above-mentioned thermoplastic resin foam, for example, a foamable thermoplastic resin composition containing a foaming agent is foamed in a predetermined container, and the outer surface excluding one surface is made of a thermoplastic resin. After producing a high-foamed body covered with a low-foaming thin film, heat-sealing these high-foaming body and the low-foaming thin film, a continuous foam sheet layer made of a thermoplastic resin separately manufactured is laminated by heat-sealing, etc. Method.

More preferably, a foamable thermoplastic resin sheet in which a plurality of foamable thermoplastic resin granules described below, which are arranged in a plane, are integrally connected via a foamable thermoplastic resin thin film. A method of obtaining the thermoplastic resin foam by producing a foam and heating the foamable thermoplastic resin sheet to a temperature equal to or higher than the decomposition temperature of a foaming agent to foam the foam.

As a method for producing the foamable thermoplastic resin sheet, a thermoplastic resin and a foaming agent constituting the foamable thermoplastic resin sheet are supplied to an extruder to decompose the pyrolytic foaming agent. After being extruded into a sheet by melt-kneading at a temperature lower than the temperature, the sheet-like foamable thermoplastic resin in a softened state has a clearance smaller than the thickness of the sheet-like foamable thermoplastic resin, and at least one outer peripheral surface. A part of the sheet-like foaming thermoplastic resin in a softened state is introduced into a pair of shaping rolls in which a large number of recesses having a shape corresponding to the foamable thermoplastic resin granules are uniformly disposed. And press-fitting, followed by cooling and release.

The shape of the foamable thermoplastic resin particles is as follows:
There is no particular limitation, and examples thereof include a hexagon, a column, and a sphere, and the column is most preferable to uniformly foam the expandable thermoplastic resin particles.

When the expandable thermoplastic resin particles are columnar, the diameter is not particularly limited since it varies depending on the expansion ratio and thickness of the target foam, but the diameter is too large. When the foaming speed is too small, the column is melted by heating at the time of foaming, easily deformed, and the one-dimensional foaming property cannot be exhibited. In addition, variations in thickness accuracy and weight accuracy increase, and the surface smoothness also decreases. Therefore, when the foamable thermoplastic resin particles are cylindrical, the diameter is preferably 1 to 30 mm, and 2 to 20 mm.
Is particularly preferred.

When the expandable thermoplastic resin particles are cylindrical, the height is not particularly limited because the height varies depending on the expansion ratio and thickness of the target foam. If it is too high, the foaming speed will decrease, and if it is too low, it will foam simultaneously with the foamable thermoplastic resin thin film, so that it will expand significantly in the width and longitudinal directions. Therefore, when the foamable thermoplastic resin particles are columnar, the height is preferably 1 to 30 mm, particularly preferably 2 to 20 mm.

The distance between the expandable thermoplastic resin granules is not particularly limited because it varies depending on the expansion ratio, thickness, etc. of the target foam, but if the distance between the granules is too long. Insufficient filling may occur when the expandable thermoplastic resin particles expand, and if the expandability is too short, the area that can expand during expansion is insufficient, and the expandability tends to be large in the width direction and the longitudinal direction. Therefore, the center-to-center distance of the foamable thermoplastic resin particles is preferably 2 to 50 mm,
Particularly preferred is 3 to 30 mm.

In order to improve the thickness accuracy and weight accuracy of the finally obtained thermoplastic resin foam, to provide high surface smoothness and to make the expansion ratio uniform, the expandable thermoplastic resin granules are formed by foaming. It is necessary that they are arranged substantially uniformly in a plane on the thermoplastic resin sheet.

The mode in which the foamable thermoplastic resin particles are arranged substantially uniformly in a plane is not particularly limited. For example, they may be arranged in a lattice, but they are arranged in a staggered manner. Then, since the high foam obtained by foaming the individual foamable thermoplastic resin granules has a hexagonal column shape, a pseudo honeycomb structure is formed. For this reason, the surface smoothness of the obtained foam is improved, and the compressive strength is improved. Therefore, it is preferable that the foamable thermoplastic resin particles are arranged in a staggered manner.

As the thermoplastic resin used for the expandable thermoplastic resin granules and the expandable thermoplastic resin thin film constituting the expandable thermoplastic resin sheet, the same kind of resin as that used for the thermoplastic resin foam is used. Things are used.

The thermoplastic resin used for the foamable thermoplastic resin granules and the thermoplastic resin used for the foamable thermoplastic resin thin film need not be the same resin, but are not limited to foaming and adhesive properties. From the viewpoint, it is preferable to use the same type of resin.

The thermoplastic resin used for the foamable thermoplastic resin sheet may be crosslinked, if necessary. This is because cross-linking can prevent foam breakage during foaming, increase the foaming ratio, and reduce the weight of the heating floor material.

The cross-linking method is not particularly limited. For example, a method in which a silane graft polymer is melt-kneaded in a thermoplastic resin and then subjected to a water treatment to perform cross-linking, or a method in which a peroxide is added to the thermoplastic resin, After melting and kneading at a temperature lower than the decomposition temperature of the product, a method of crosslinking by heating to a temperature higher than the decomposition temperature of the peroxide, a method of cross-linking by irradiating radiation, and the like can be given. However, a cross-linking method using a silane graft polymer is preferable in order to obtain a high cross-linking resin and a low (no) cross-linking resin described later.

The silane-grafted polymer is not particularly restricted but includes, for example, silane-grafted polyethylene and silane-grafted polypropylene.

The water treatment method in the above-mentioned crosslinking method includes a method of immersion in water and a method of exposure to water vapor. In these methods, when processing at a temperature higher than 100 ° C., it may be performed under pressure.

In the above water treatment, if the temperature of water and steam is low, the crosslinking reaction rate is reduced, and if the temperature is too high, the foamable thermoplastic resin sticks with heat. 50-130 ° C is preferred, 90-1
20 ° C. is particularly preferred.

If the time for the water treatment is short, the crosslinking reaction may not proceed completely. Therefore, the water treatment time is preferably in the range of 0.5 to 12 hours.

The method of mixing the silane graft polymer is as follows:
There is no particular limitation on the method as long as it can be uniformly mixed. For example, a method in which a thermoplastic resin and a silane graft polymer are supplied to a single-screw or twin-screw extruder and melt-kneaded, a method in which melt-kneading using a roll, a method in which melt-kneading using a kneader, and the like are exemplified.

If the amount of the silane-grafted polymer is too large, the foaming ratio of the obtained thermoplastic resin foam is reduced due to excessive crosslinking, and if the amount is too small, the cells are broken and uniform foaming is caused. Since cells cannot be obtained, the amount of the silane graft polymer to be added is preferably from 5 to 50% by weight, particularly preferably from 10 to 35% by weight, based on the total thermoplastic resin.

When silane crosslinking is performed using a silane graft polymer, a silane crosslinking catalyst may be used if necessary. The silane crosslinking catalyst is not particularly limited as long as it promotes a crosslinking reaction between the silane graft polymers.For example, dibutyltin diacetate, dibutyltin dilaurate, dioctyltin dilaurate, tin octoate,
Examples include tin oleate, lead octane, zinc 2-ethylhexanoate, cobalt octoate, lead naphthenate, zinc cabrate, and zinc stearate.

When the addition amount of the silane crosslinking catalyst increases, the expansion ratio of the obtained thermoplastic resin foam decreases,
In addition, when the amount decreases, the crosslinking reaction rate decreases, and a large amount of time is required for water treatment.
0.001 to 100 parts by weight of the thermoplastic resin,
10 parts by weight is preferable, and 0.01 to 0.1 parts by weight is more preferable.

The thermoplastic resin used for the foamable thermoplastic resin granules is not particularly limited as described above, but a highly crosslinked thermoplastic resin having almost no compatibility with a foaming agent, a low crosslinked thermoplastic resin or a non-crosslinked thermoplastic resin. It is preferably a mixture with a crosslinked thermoplastic resin. In this case, at the time of foaming, the low-crosslinked thermoplastic resin or the non-crosslinked thermoplastic resin easily flows, so that the surface smoothness of the obtained thermoplastic resin foam is enhanced.

As the thermoplastic resin having little compatibility with the foaming agent (before crosslinking), two kinds of the above-mentioned thermoplastic resins (hereinafter referred to as highly crosslinked without being restricted by the crosslinking performance of the resin itself). The resin forming the thermoplastic resin is referred to as “highly crosslinkable resin”, and the resin forming the low crosslinkable thermoplastic resin or the noncrosslinkable thermoplastic resin is referred to as “low (non) crosslinkable resin”. Can be used.

When the difference in the melt index (M1) between the highly crosslinkable resin and the low (non-) crosslinkable resin increases, the highly crosslinked thermoplastic resin obtained by crosslinking, the low crosslinked thermoplastic resin or the non-crosslinked thermoplastic resin Are very coarsely dispersed, so that the foaming ratio of the obtained foam decreases. When the difference between the two melt indexes (M1) becomes smaller,
The compatibility between the highly crosslinked thermoplastic resin obtained by crosslinking and the low crosslinked thermoplastic resin or the non-crosslinked thermoplastic resin may be increased, and the surface smoothness of the obtained thermoplastic resin foam may be reduced. For this reason, the highly crosslinked thermoplastic resin and the low crosslinked thermoplastic resin or the non-crosslinked thermoplastic resin are uniformly and finely dispersed without being mutually compatible with each other, and to obtain a thermoplastic resin foam having a high expansion ratio, Difference of M1 of 5 to 13 g /
It is preferably 10 minutes, more preferably 7 to 11 g / 10 minutes.

The melt index (M1) is expressed as J
It is a value measured according to IS K 7210.

If the degree of cross-linking of the highly cross-linked thermoplastic resin is too high, the foaming ratio of the obtained thermoplastic resin foam decreases due to excessive cross-linking. Conversely, if it is too low, the cells break during foaming. A uniform cell may not be obtained. For this reason, it is preferable to set the gel fraction as an index of the degree of crosslinking to 5 to 40% by weight of the entire thermoplastic resin, and 10 to 35% by weight.
Is more preferable.

If the degree of crosslinking of the low-crosslinking thermoplastic resin or the non-crosslinking thermoplastic resin is high, the fluidity of the thermoplastic resin foam obtained due to excessive crosslinking is lowered, and the surface smoothness of the thermoplastic resin foam is reduced. The gel fraction, which is an index of the degree of crosslinking, is preferably 5% by weight or less, and is preferably 3% by weight.
The following is more preferred.

The gel fraction means that the crosslinked resin component is 12
Of the residual weight after immersion in xylene at 0 ° C. for 24 hours,
It means the weight percentage based on the weight of the crosslinked resin component before immersion in xylene.

Examples of the foaming agent to be added to the foamable thermoplastic resin granules and the foamable thermoplastic resin thin film include a pyrolytic foaming agent.

When the amount of the pyrolytic foaming agent is too large,
Since uniform cells are not formed due to foam breaking, and if the amount is too small, foaming may not be sufficiently performed. Therefore, the pyrolytic foaming agent is used in an amount of 1 to 25 parts by weight based on 100 parts by weight of the thermoplastic resin. It is preferable to add in a ratio.

The pyrolytic foaming agent is not particularly limited as long as it has a decomposition temperature higher than the melting temperature of the thermoplastic resin to be used. For example, sodium bicarbonate,
Inorganic pyrolytic blowing agents such as ammonium carbonate, ammonium bicarbonate, azide compounds and sodium borohydride; azodicarbonamide, azobisformamide, azobisisobutyronitrile, barium azodicarboxylate, diazoaminobenzene, N, N'-dinitrosopentamethylenetetramine, P-toluenesulfonylhydrazide, P, P'-oxybisbenzenesulfonylhydrazide, trihydrazinotriazine, and the like. When a polyolefin-based ethylene resin is used as the thermoplastic resin, the decomposition temperature Azodicarbonamide, which is easy to adjust the decomposition rate and decomposition rate, generates a large amount of gas, and is excellent in sanitation, is preferable.

The housing used in the present invention is not particularly limited as long as it has a space capable of accommodating the connection cable and a strength enough to protect the connection cable. The cross-sectional shape may be a U-shape, a groove shape with a lip, or the like.

The material for forming the housing is not particularly limited as long as it has sufficient strength to protect the connection cable. However, when the cross-sectional shape is a grooved shape with a lip, it is only necessary to further widen the opening. Because it requires flexibility,
Vinyl chloride resins, polyolefin resins and the like are preferred.

As a method for laminating the heating panel and the surface finishing material, a method using an adhesive or a pressure-sensitive adhesive,
Examples thereof include a method using a double-sided adhesive tape. Examples of the adhesive used include vinyl acetate-based adhesives, vinyl ester-based adhesives, and chloroprene-based adhesives. Examples of the adhesive and the adhesive of the double-sided adhesive tape include an acrylic adhesive.

In the present invention, the soft resin foam as a non-adjustment material laminated as necessary on the back surface of the heat insulating material may be one having a relatively low compression modulus as compared with the heat insulating material. If the expansion ratio is 10
Up to 30 times polyethylene foam, foaming ratio is 20 to 40
Double polyurethane foam and the like.

The compression elastic modulus of the soft resin foam is not particularly limited, but if it is too small, walking feeling is reduced, and if it is too large, soundproofing performance is reduced.
4 MPa is preferred.

The thickness of the soft resin foam is also not particularly limited, but if it is too thin, the soundproofing performance will be reduced, and if it is too thick, the walking sensation will be reduced. Therefore, it is preferably 5 mm or less, more preferably 1 to 4 mm.

The above-mentioned soft resin foam may be subjected to groove processing or uneven processing in order to further increase the soundproofing performance or cope with unevenness of the floor substrate (generally, concrete) as required. .

[0068]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of a heating floor according to the present invention.

The heating floor 1 has a surface finishing material 2, a planar heating element 3, and a heat insulating material 4 laminated in this order from the front side, and is laid on a floor base 10. The sheet heating element 3 and the heat insulating material 4 are formed on the surface of the heat insulating material 4 so that the sheet heating element 3 is integrally laminated on the surface of the heat insulating material 4 in advance to form the heating panel 5.

A groove 4a is formed on the back side of the heat insulating material 4 of each heating panel 5 from one end face to the other end face, and the groove 4a has a U-shaped cross section. The housing 6 is disposed with its opening facing the floor substrate 10 side. In the housing 6, a connection cable C1 for connecting the planar heating elements 3 of each group described later is housed.

In this case, the depth of the groove 4a formed in the heat insulating material 4 of each heating panel 5 may be a depth that can completely accommodate the housing 6 accommodating the connection cable C1. Further, as shown in FIG. 2, instead of the housing 6 having a U-shaped cross section, a groove-shaped housing 6 with a lip may be employed.

By arranging the housing 6 in the groove 4a formed in the heat insulating material 4 of each heating panel 5 as described above, a direct load does not act on the connection cable C1, and the connection cable C1 is Since it is not exposed, it can be used for a long time.

As shown in FIG. 3, a non-adjusting material 7 can be laminated on the back surface of the heating panel 5, and in this case,
A groove 7a is also formed in the non-adjusting material 7 corresponding to the groove 4a of the heat insulating material 4 of each heating panel 5, and the housing 6 is provided over the groove 4a of the heat insulating material 4 and the groove 7a of the non-adjusting material 7. Alternatively, the connection cable C1 may be stored in the housing 6.

By the way, the heating panel 5 described above is
Is laid in a matrix on the floor substrate 10 as shown in FIG.
Odd row heating panel 5₁₁, 5₁₂, 5₁₃.., 5₃₁,
5₃₂, 5 ₃₃..Heat panel A group composed of and an even number
Row heating panels 5_{twenty one}, 5_{twenty two}.., 5₄₁, 5₄₂・ ・
It is divided into the heating panel B group formed.

[0076] Then, in the heating panel group A, heating panel 5 ₁₁ laid in the first row, the 5 _12, 5 ₁₃ the connection terminals 8 of ... is the power supply cable C _A of the first system is parallel The connection terminals 8 of the heating panels 5 ₁₁ , 5 ₃₁ ... And the heating panels 5 ₁₂ ,
Each of the connection terminals 8 of 5 ₃₂ ... Is connected via a connection cable C1.

[0077] Further, in the heating panel B group, the heating panel 5 _21, 5 ₂₂ the connection terminals 8 ... laid in the second row, the power supply cable C _B of the second system is connected in parallel And heating panels 5 ₂₁ , 5 laid in the same row
₄₁ the connection terminals 8 and the heating panel 5 ₂₂ ... 5 ₄₂ ...
Are connected via the connection cable C1.

In this case, the connection cable C1 for connecting the connection terminals 8 of the heating panels 5 ₁₁ , 5 ₃₁ ... Laid in the same row of the heating panel A group and the connection terminals of the heating panels 5 ₁₂ , 5 _32. 8 is connected to the housing 6 and the heater 6 arranged in the groove 4a of each heat insulating material 4 of the heating panels 5 ₂₁ , 5 ₄₁ ... Laid in the same row of the heating panel B group laid therebetween. The panels 5 ₂₂ , 5 _42, ... Are housed in the housings 6 provided in the grooves 4 a of the heat insulating materials 4, respectively.

Similarly, the connection cable C1 for connecting the connection terminals 8 of the heating panels 5 ₂₁ , 5 _41, ... Laid in the same row of the heating panel B group and the connection terminals of the heating panels 5 ₂₂ , 5 _42. 8 are connected to the housing 6 and the heating panel 5 ₃₃ disposed in the groove 4a of each heat insulating material 4 of the heating panel 5 ₃₂ ... Laid in the same row of the heating panel A group laid therebetween. Are housed in the housings 6 provided in the grooves 4a of the respective heat insulating materials 4.

[0080] In addition, the heating panel 5 of the heating panel B group_{twenty one},
5_{twenty two}..The second power supply connected to each connection terminal 8
Supply cable C_BIs the heating panel in the first row of the heating panel group A
Le 5 ₁₂, 5₁₃..Has provided in the groove 4a of each heat insulating material 4
Each is stored in the housing 6.

Next, a case where the heating floor 1 thus constructed is constructed will be described.

First, the heating panel in the first row of the heating panel A group
Le 5₁₁, 5₁₂, 5₁₃..Temporarily laying and connecting terminals
8 are connected to one end of a power supply cable C of the first system, respectively._ATo
Connect to the other end of each connection terminal 8 and connect to both ends
Connect one connection terminal of the connection cable C1 having terminals
(See FIG. 5A). After this, the heating panel B group
2 row heating panel 5_{twenty one}, 5_{twenty two}.. of the heating panel A group
First row heating panel 5 ₁₁, 5₁₂, 5₁₃..Slightly further away
And temporarily laid them at one end of each connection terminal 8
Second power supply cable C_BTo connect
The other end of each connection terminal 8 has a connection terminal having connection terminals at both ends.
One connection terminal of the connection cable C1 is connected.

Then, the heating panel B group of the heating panel B group, which corresponds to the position where the connection cable C1 connected to each connection terminal 8 of the heating panel 5 ₁₁ , 5 ₁₂ , 5 ₁₃ . Insulation material 4 for two rows of heating panels 5 ₂₁ , 5 ₂₂ ...
After the groove 4a is formed on the back surface of the housing 6, the housing 6 is disposed in the groove 4a, and the connection cable C1 is stored in the housing 6. Further, the heating panel 5 ₂₁ in the second row of the heating panel B group,
5 ₂₂ power supply cable C _B that is connected to the connection terminals 8 ... hits the pass position, the first row of the heating panel 5 _12, 5 ₁₃ back surface side of each heat insulator 4 ... heating panel group A After forming the groove 4a in the housing, the housing 6 is disposed in the groove 4a,
Housing the power supply cable C _B of the second system to the housing 6 (see Figure 5 (b)). The heating panels 5 ₁₁ , 5 ₁₂ , 5 _13, ... Of the first row of the heating panel A group are positioned and laid properly.

The formation of the groove 4a in the heat insulating material 4 is as follows.
It can be easily performed using a knife or the like.

Next, though not shown in detail, the heating panels 5 ₂₁ , 5 _22, ... Of the second row of the heating panel B group are located slightly away from the heating panels 5 ₃₁ , 5 ₃₁ , of the heating panel A group.
5 _32, 5 ₃₃ ... temporarily laid, the end of their connection terminals 8, the first row of the heating panel 5 ₁₁ heating panel A group that has been laid before, 5 _12, 5 ₁₃ the connecting terminals of .. 8 is connected to the other connection terminal of the connection cable C1, and the other end of each connection terminal 8 is connected to one connection terminal of the connection cable C1 having connection terminals at both ends. After that, the heating panel in the third row of the heating panel A group, which corresponds to the position where the connection cable C1 connected to each connection terminal 8 of the heating panels 5 ₂₁ , 5 ₂₂ ... 5 ₃₂ , 5
After forming a groove 4a on the back side of each heat insulating material 4 of _33. , the housing 6 is disposed in the groove 4a, and the connection cable C1 is stored in the housing 6. And the second of the heating panel B group
Position the heating panels 5 ₂₁ , 5 ₂₂ ... And lay them out properly.

Similarly, the heating panels 5 are sequentially laid, the connection cables C1 are connected to the respective connection terminals 8, and the heat insulating material 4 of the respective heating panels 5 laid in the previous stage is similarly provided.
The housing 6 is provided with a groove 4a formed on the back side of the housing 6, and the connection cable C1 is housed in the housing 6. Together,
The heating panel 5 laid in the previous stage is positioned and laid properly.

When the laying of the heating panels 5 is completed, the heating floor 1 can be formed by laying the surface finishing material 2 on those surfaces.

Therefore, at the time of construction, when the heating panel 5 is laid, a groove 4a is formed on the back side of the heat insulating material 4 corresponding to the connection cable C1 connected to the heating panel 5 laid in the preceding stage. It suffices to dispose the housing 6 and house the connection cable C1 in the housing 6, so that the electric wiring work can be performed in parallel with the installation of the heating floor 1, and the design of the heating floor corresponding to the electric wiring is unnecessary. Therefore, the number of construction steps and cost can be reduced.
In addition, since electric wiring is performed at the construction site, it is possible to cope with any position of the connection terminal 8 of the heating panel 5, so that the positional deviation between the heating panels can be easily absorbed.

On the other hand, the heating floor 1 thus configured is
Although not shown in detail, ON-OFF of the heating panel A group
The circuit is controlled by a controller having two circuits, a circuit and an ON-OFF circuit of the heating panel B group. That is, a controller (not shown) supplies a power supply voltage to the heating panel group _A through the first system power supply cable CA, and the floor heating state by the heating panel group A (FIG. 6A)
A reference), the power supply voltage supplied through the power supply cable C _B of the second system to the heating panel B group, a floor heating condition by the heating panel B group reference (FIG. 6 (b)), is at a set time alternately Is ON-OFF controlled.

As a result, the current amount is reduced by half and the instantaneous maximum current amount is reduced by half compared with the case where all the heating panels 5 shown in FIG. It becomes unnecessary to increase the number of devices, and the cost can be reduced (see FIG. 7A).

Further, the rate of temperature rise of the room temperature is slightly slower than in the case where the entire floor heating is performed by all the heating panels 5 shown in FIG. 8B, but the floor heating portion and the non-floor heating portion are clearly defined. There is no generation of a temperature boundary, and the entire room can be heated uniformly.

In the above-described embodiment, the case where the plurality of heating panels 5 are divided into the heating panel A group of the odd-numbered row and the heating panel B group of the even-numbered row has been exemplified. The heating panel group may be divided into a group and a heating panel group in an even-numbered row.

As shown in FIG. 9, the heating panels 5 ₁₁ , 5 ₁₂ ... In the first row, the heating panels 5 ₄₁ , 5 _42.
・ Heating panel 5 with the following two rows of heating panels 5
, Heating panels 5 ₂₁ , 5 ₂₂ ... In the second row, heating panels 5 ₅₁ , 5 ₅₂ .
A heating panel B group composed of a heating panel 5 having two rows of heating panels 5, a heating panel 5 ₃₁ , 5 ₃₂ ... In the third row, and a heating panel 5 ₆₁ , 5 _62.・ 、
A heating panel A group and a heating panel B group are divided into three groups by a heating panel C group composed of a heating panel 5 having two rows of heating panels 5 and a controller having three systems of ON-OFF circuits. Alternatively, the power supply voltage may be sequentially supplied to the heating panel C group.

In this case, for example, the connection cable C1 connecting the planar heating elements 3 of the heating panels 5 located in the same row of the heating panel A group is connected to the heating panel B located between them.
The grooves 4a, 4a are provided in the heat insulating material 4 of the heating panel 5 in the group and the heat insulating material 4 of the heating panel 5 in the heating panel C, respectively.
a may be formed to communicate with each other, and the housing 6 may be disposed over the grooves 4 a and 4 a and housed in the housing 6. Heating panel 5 located in the same row as another heating panel group
Although not shown in detail, the connection cable C1 for connecting the sheet heating elements 3 is formed by connecting the grooves 4a to the heat insulating material 4 of the heating panel 5 in the heating panel group located therebetween. Then, the housing 6 may be disposed over the grooves 4a, 4a and housed in the housing 6.

Even when such a plurality of heating panels 5 are divided into three parts, they may be divided into columns instead of rows.

Further, when a plurality of heating panels 5 are divided into a plurality of heating panel groups, each of the divided heating panel groups does not need to be composed of the same number of heating panels 5.
The number of heating panels 5 in each heating panel group is arbitrary. For example, as shown in FIG. 9, when a plurality of heating panels are divided into three groups of a heating panel A group, a heating panel B group, and a heating panel C group, the heating panel 5 of the heating panel A group is divided into three groups. The number may be relatively larger than the number of the heating panels 5 forming the heating panel B group and the number of the heating panels 5 forming the heating panel C group. That is, the number of each heating panel group may be set according to the installation position of the heating panel 5 or the like.

[0097]

As described above, according to the present invention, a plurality of heating panels laid in a matrix are divided into at least two heating panel groups, and the planar heating elements of each heating panel group are separated from each other. Since the power supply cable is connected to the power supply cable, the amount of current that flows simultaneously and the maximum instantaneous current can be reduced by heating the floor with a time lag between each system, eliminating the need for additional breakers and reducing costs. In addition, a clear temperature boundary between the floor heating portion and the non-floor heating portion does not occur, and the entire room can be uniformly heated.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a heating floor according to the present invention.

FIG. 2 is a sectional view showing a modified example of a housing.

FIG. 3 is a sectional view showing another embodiment of the heating floor of the present invention.

FIG. 4 is a plan view showing an example of a heating panel group constituting the heating floor of the present invention.

FIG. 5 is an explanatory view showing a step of laying a heating panel on the heating floor in FIG. 4;

FIG. 6 is an explanatory view showing a floor heating cycle by the heating panel group of FIG. 4;

FIG. 7 is a graph showing the relationship between current and time during the floor heating cycle of FIG.

FIG. 8 is a graph showing the relationship between room temperature and time during the floor heating cycle of FIG. 6 and during simultaneous simultaneous floor heating.

FIG. 9 is a plan view showing another example of the heating panel group constituting the heating floor of the present invention.

FIG. 10 is an explanatory diagram showing a floor heating cycle by another heating panel group.

[Explanation of symbols]

1 Heating floor 2 facings 3 planar heating element 4 heat insulating material 5 heating panel 6 housing 7 uneven surface adjustment member 8 connecting terminals 10 underfloor C _A, C _B power supply cable C1 connected cable

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasushi Goto 2-2 Sekisui Kagaku Kogyo Co., Ltd. 2-2, Kamitobagamichoko-machi, Minami-ku, Kyoto (72) Inventor Eiichi Kobayashi 3-21- Nishichiyogaoka, Nara City, Nara Prefecture 23 (72) Inventor Yasuhiro Asai 1-8 Ibukino, Midori-ku, Yokohama, Kanagawa Prefecture 308 Nagatsuta Park Heights 308 F term (reference) 3K058 AA81 BA02 CB19 3L072 AA01 AB03 AC02 AD02 AE03 AE10 AG03

Claims (4)

[Claims] 1. A plurality of heating panels each comprising a heat insulating material and a planar heating element integrally laminated on the surface of the heat insulating material, the heating panels being laid in a matrix in the vertical and horizontal directions of the floor base surface, and a surface of the heating panel. And a surface finishing material laid on the heating floor, wherein the plurality of heating panels are divided into at least two heating panel groups, and the sheet heating elements of each heating panel group are separate systems. A heating floor, which is connected to a power supply cable. 2. The heating panel according to claim 1, wherein the plurality of heating panels are divided into at least two heating panel groups by a plurality of rows or rows of heating panels having one or more rows or one or more rows of heating panels. The heating floor according to claim 1. 3. A notch is formed on a back surface of the heat insulating material of each of the heating panels, a housing is provided in the notch, and a connection cable for connecting a sheet heating element of one heating panel group is provided. 3. The heating panel according to claim 1, wherein the heating panel is housed in a housing provided on a heat insulating material.
Heating floor as described. 4. The heating floor control method according to claim 1, wherein a power supply voltage is alternately supplied to the planar heating elements of each heating panel group after a set time.