JP2001116274A - Floor heating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor heating system in which installation performance can be enhanced. SOLUTION: This floor heating system comprises a floor surface material, a plurality of members for supporting the floor surface material at an arbitrary interval, and a plurality of heating members disposed between the adjacent supporting members beneath the floor surface material and generating heat upon power supply. A space 16 is formed to communicate between adjacent heating members through the supporting member and a part 14 for coupling the adjacent heating members at least electrically is inserted into the space 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor heating device which is disposed under a floor of a house or the like to heat the floor.

[0002]

2. Description of the Related Art Conventionally, a floor heating panel 1 'having a structure as shown in FIG. 11 has been commercially available as a floor heating device which is disposed under a floor of a house or the like to heat the floor. This is because the heater wire 4 is arranged in a zigzag shape as a heating element formed by coating a metal conductor that generates heat by the application of commercial power with an insulating resin, and a heat equalizing sheet made of aluminum foil is placed on the heater wire 4. The heater wire 4 is mounted thereon so as to cover the surface plate 2 made of a U-shaped iron plate or the like having a function of protecting the heater wire 4 and efficiently transmitting the heat generated by the heater wire 4. Back material 6 made of a fibrous nonwoven fabric (felt) having a heat insulating function for preventing heat from escaping below the floor below the floor
Is installed. Near the heater wire 4 inside the floor heating panel 1 ', a thermostat 5 is connected in series with the heater wire 4 and shuts off the power supply to the heater wire 4 when abnormal heat is generated. Further, a terminal box 7a containing a lead wire 8 for supplying commercial power to the heater wire 4 is provided at one corner of the floor heating panel 1 ', and a lid 7b is detachably attached to an upper opening of the terminal box 7a. Has been adhered.

[0003] The joists 9 made of square timber for supporting the floor material are conventionally arranged at intervals of one foot (approximately 303 mm). The floor heating panels 1 ′ are laid between the adjacent joists 9. The width of 1 ′ is about 250 mm, and various lengths of floor heating panel 1 ′ are prepared to improve workability. The floor heating panel 1 'has a thickness of about 12 mm because the thermostat 5 is built therein.

FIG. 12 is a perspective view of a floor structure in which a plurality of floor heating panels 1 'are laid out, with a part cut away. By convention 1
Foam of urethane resin or styrene resin, etc., having a function of supporting the floor heating panel 1 'and a function of preventing heat from escaping below the floor, between the joists 9 made of square members arranged at intervals of a length (about 303 mm). A board-shaped heat insulating panel 10 and a floor heating panel 1 ′ are laid. The plurality of floor heating panels 1 'are connected to a controller 13 for controlling the temperature by turning on and off the commercial power, via a cable line 11. On the joist 9, a wooden flooring 12 is laid as a floor surface material in which the surface of the wooden plywood is decorated to improve the design as a floor. The wooden flooring 12 is generally 12 to 15 mm in order to secure the rigidity of the floor.

[0005]

However, the prior art described above has the following disadvantages. 1). Since the floor heating panels 1 'are configured with a width of about 250 mm so that they can be laid between the plurality of joists 9, the plurality of floor heating panels 1' equal in number to the joists 9 on which the floor heating panels 1 'are laid are provided. There is a problem that the connection work of the cable wire 11 for connecting is required, and the workability is poor. 2). Since it is necessary to provide a thermostat 5 for preventing abnormal heating of the heater wire 4 inside the floor heating panel 1 ', the thickness of the floor heating panel 1' is increased, the material cost is increased, and the product weight is increased. There is a problem of doing. 3). Since it is necessary to provide the heater wire 4 and the thermostat 5 inside the floor heating panel 1 ', there is a problem that a connection failure may occur and reliability is reduced. 4). In order to detect abnormal heat generated by the heater wires 4 arranged in a zigzag shape in the floor heating panel 1 ′ with the thermostat 5 partially provided, in addition to the heat equalizing sheet 3, a surface plate 2 forming an outer shell However, since it must be made of a material having good thermal conductivity such as an iron plate, there is a problem that the structure of the product is complicated and productivity is poor, and the weight of the product is heavy, so that the workability is not good.

[0006] The present invention has been made in view of the above points, and has as its object to provide a floor heating device capable of improving workability and the like.

[0007]

According to the present invention, there is provided a floor heating apparatus, comprising: a floor surface material; a plurality of floor surface material supporting members for supporting the floor surface material at arbitrary intervals; A floor heating device comprising a plurality of heat generating members which are disposed between floor surface material support members adjacent to each other below the material and generate heat when electric power is supplied. A space is formed to allow the heat generating members to communicate with each other, and a connecting portion for at least electrically connecting the adjacent heat generating members is inserted into the space.
A plurality of heat generating members can be installed using a pre-connected one at the connecting portion, and connection work of cable lines connecting adjacent heat generating members via the floor surface material support member is not required, and the workability can be improved. It is also preferable that the heat generating member is a planar heat generating member in which a heat generating element is held by a sheet-like material.

[0008] It is also preferable that the connecting portion is integrally provided so as to be flush with the upper surface of the heat generating member, and an electric wire or a heat generating wire is inserted through the connecting portion and electrically connected. In this case, the plurality of heat generating members can be connected mechanically and electrically.

The space provided in the floor surface material supporting member is a notch opening an upper surface, and a connecting portion is fitted into the notch and the connecting portion is inserted. In this case, the connecting portion can be easily inserted into the floor surface material supporting member, and the workability can be improved.

[0010] It is also preferable that the connecting portion is electrically connected like an electric wire.

It is also preferable that the connecting portion is formed to have flexibility. In this case, the connecting portion can be bent and the workability can be improved.

It is also preferable that the connecting portion is foldable so that a plurality of heat generating members can be overlapped. In this case, even if a plurality of heat-generating members are connected, the heat-generating members can be folded and made compact, so that storage and transportability can be improved.

Preferably, the heating element is a linear or planar heating element.

It is also preferable that a temperature control means is connected to the heating element, and the temperature detecting means is provided near the heating element. In this case, accurate temperature control can be performed by accurately detecting the temperature of the heating element.

It is also preferable that the temperature detecting means is a thermostat.

It is also preferable that the temperature detecting means is a linear or planar heat sensitive material. in this case,
It can be made thinner than the one using a thermostat, and the material cost is low and the product weight is light.

[0017] It is also preferable that the temperature detecting means is a heat-sensitive body, and the heat-generating body is configured to also serve as a heat-sensitive body. In this case, there is no possibility that a connection failure is generated unlike a device using a thermostat. Further, since a surface material and a heat equalizing sheet are not required unlike the related art, the structure of the product is simplified and the productivity is improved, and the weight of the product is reduced, so that the workability can be improved.

[0018] It is also preferable that a part or all of the plurality of floor surface material supporting members are arranged in parallel.

Further, it is preferable that the plurality of floor surface material supporting members are arranged in parallel at substantially equal intervals.

[0020]

Embodiments of the present invention will be described below. First, an example of the embodiment shown in FIGS. 1 to 3 will be described. FIG. 2 shows a floor heating panel 1 constituting a main body of the floor heating device.
FIG. The floor heating panel 1 includes three heat generating panels 1a, 1b, and 1c as heat generating members.
It is connected by. The heat generating panels 1a, 1b, 1c and the connecting portion 14 of the floor heating panel 1 have substantially the same surface and substantially the same thickness and are of the same member (surface material 2, heat equalizing sheet 3, heater wire 4 as a heating element, back material). 6).

The floor heating panel 1 has a heater wire 4 as a heating element, which is formed by coating a metal conductor that generates heat by the application of commercial power with an insulating resin, in a zigzag pattern. A heat equalizing sheet 3 made of aluminum foil is disposed, and a U-shaped cross section having a function of protecting the heater wire 4 and efficiently transmitting the heat generated by the heater wire 4 is provided above the heat equalizing sheet 3, and the shape of the letter E when viewed from directly above is the letter E. And a back material 6 made of a nonwoven fabric (felt) having a heat insulating function to prevent heat from escaping below the heater wire 4. are doing. Near the heater wire 4 inside the floor heating panel 1, a thermostat 5 serving as a temperature detecting means for interrupting the supply of electricity to the heater wire 4 when abnormal heat is generated is connected in series with the heater wire 4 and built therein. Further, a terminal box 7a containing a lead wire 8 for supplying commercial power to the heater wire 4 is provided at one corner of the outer periphery of the floor heating panel 1, and a lid 7b is detachably attached to an upper opening of the terminal box 7a. Has been adhered to.

The joists 9 made of square timber for supporting the flooring are conventionally arranged at intervals of one foot (about 303 mm), and the heat-generating panels 1a, 1b and 1c of the floor heating panel 1 are arranged between the adjacent joists 9. Heating panels 1a, 1b, 1c
Is 250 mm in width. The gap between the heat generating panels 1a, 1b, 1c of the floor heating panel 1 is also set to 53 mm in consideration of the width 45 mm of the commonly used joist 9.
In the example of the present embodiment, the floor heating panel 1 is formed by connecting three heat-generating panels 1a, 1b, and 1c, but it is needless to say that the number is not limited to three. The connecting portion 14 is for at least electrically connecting the heat generating panels 1a, 1b, 1c.
Are connected to the heat generating panels 1a, 1b, 1c.

FIGS. 1 and 3 are perspective views in which a part of a floor heating device on which the floor heating panel 1 is laid is cut away. In the example of FIG. 1, the floor surface material supporting member is constituted by a joist 9, and has a floor structure in which a wooden floor material 12 is directly disposed on the joist 9 as a wooden surface material. Conventionally, one shaku (303mm)
Board-shaped insulation made of a foam such as a urethane resin or a styrene resin having a function of supporting the floor heating panel 1 and a function of preventing heat from escaping below the floor is provided on the joists 9 made of square members arranged at intervals. The panel 10 and the heating panels 1a, 1b, 1c of the floor heating panel 1 are laid. The floor heating panel 1 is connected by a cable 15 to a controller 13 for turning on and off commercial power and controlling the temperature. On the joist 9, a wooden flooring 12 is laid as a floor surface material in which the surface of the wooden plywood is decorated to improve the design as a floor. At a portion where the joist 9 interferes with the connecting portion 14 of the floor heating panel 1, a space 16 is provided in the joist 9 and the connecting portion 14 is inserted into this space 16. In the case of this example, the space 16 is provided with a notch 16a that opens to the upper surface of substantially the same width and the same thickness as the connecting portion 14, and the connecting portion 14 is inserted into the notch 16a by being inserted from above. When the floor heating device is constructed in this manner, three times the area can be laid at once with one floor heating panel 1 as compared with the conventional example shown in FIG. 12, and the number of connections with the cable 15 is one. Workability is good to complete.

In the example of FIG. 3, a temporary floor is
After laying a base flooring material 17 such as plywood, a small joist 18 for supporting the wooden flooring material 12 as a floor surface material and the floor heating panel 1 are laid on the basement flooring material 17, and the surface is made of a wooden flooring material. 12
This is the structure of the floor heating device when finished with. In the case of this example, a small joist 18 is disposed on the joist 9 with a base flooring 17 interposed therebetween, and the small joist 18 serves as a wooden floor material supporting member.
The construction method in which the floor heating panel 1 is laid on the base floor that has been finished as described above and the wooden floor material 12 is supported by using the small joists 18 is suitable for a 2 × 4 house where joist construction is not performed. Also,
There is an advantage that the curing of the wooden flooring 12 can be omitted even in a conventional (framed) construction method in which a joist is constructed.

In the example shown in FIG. 3, a board-shaped heat insulating panel 10 made of a foamed material such as urethane resin or styrene resin having a function of preventing heat from escaping below the floor is provided between joists 9. The floor heating panel 1 is placed on the base floor material 17.
At the same thickness as above, small joists 18 having a width of 45 mm are laid at intervals of about one foot (about 303 mm). 18
Between the three heating panels 1a, 1b of the floor heating panel 1,
1c is laid. In a portion where the small joist 18 and the connecting portion 14 of the floor heating panel 1 interfere, a space 16
Is provided, and the connecting portion 14 is inserted through the space 16. In the case of this example, a gap 16b having substantially the same width and the same thickness as the connecting portion 14 is provided as the space 16, and the connecting portion 14 is inserted into the gap 16b from above. The floor heating panel 1 is connected by a cable 15 to a controller 13 for turning on and off commercial power and controlling the temperature. Joist 9
On the upper side, a wooden flooring 12 is laid as a floor surface material in which the surface of the wooden plywood is decorated to improve the design as a floor.

Next, examples shown in FIGS. 4 to 8 will be described. In the case of this example, a floor heating sheet 20 is used instead of the floor heating panel 1, and the floor heating sheet 20 is formed by connecting three heat generating panels 20a, 20b, and 20c as heat generating members by a connecting portion 14. is there. FIG. 4 shows a heat-sensitive heating wire 21.
5 is a perspective view of a floor heating sheet 20 having a zigzag arrangement as a heat source, FIG. 5 is a sectional view of the floor heating sheet, and FIG. 6 is a partial perspective view of a heat-sensitive heating wire.

As shown in FIG. 6, the heat-generating heating wire 21 which also functions as a heating element and a temperature sensing means as a temperature detecting means is formed by winding a metal conductor wire spirally around an electrically insulating yarn 21d made of polyester fiber or the like. A heat generating wire 21a that generates heat by applying a current is formed, its surface is covered with an organic heat-sensitive material 21c whose impedance changes negatively, and a metal conductor wire is spirally wound around its surface to form a detection wire 21b.
And finally the surface thereof is covered with a coating layer 21e of an electrically insulating resin (the outer diameter of the heat-sensitive heating wire is 2-3 mm). This heat-sensitive heating wire 21
A commercial power supply is connected between both ends of the heating wire 21a, and the heating wire 21a and the detection wire 21b at one end of the heat-sensitive heating wire 21 are connected.
Is short-circuited, the alternating current flowing from the heating wire 21a to the detecting wire 21b via the heat-sensitive material 21c causes the detecting wire 2
A temperature / AC voltage characteristic voltage _VTC having the characteristic shown in FIG. Since the heat-sensitive material 21c has a negative characteristic that changes in a direction in which the impedance decreases when the temperature rises, the alternating current flowing into the detection line 31b increases when the temperature rises. The temperature / AC voltage characteristic voltage V _TC has a positive temperature characteristic because the detection line 21b having a constant resistance value is developed when the AC current flows. Utilizing the temperature / AC voltage characteristic voltage _VTC , the temperature of the heat-sensitive heating wire 21 that rises with the supply of power is detected, and when the temperature reaches a preset temperature, the supply of power using a relay or the like is performed. The set temperature is maintained by repeating the operation of stopping and, after a lapse of a predetermined time, starting the energization.

As shown in FIG. 5, the floor heating sheet 20 has a sheet-like surface material made of a material having good heat conductivity such as an aluminum foil. 23, and a lower surface member 24 made of a fibrous nonwoven fabric having a heat insulating function for preventing heat generated by the heat-sensitive heating wire 21 from escaping below the floor.
At one corner of the outer periphery of the floor heating sheet 20 is a heat-sensitive heating wire 2
1 is provided with a terminal box 25 for connecting a cable for supplying commercial power.

The joists 9 made of square timber for supporting the floor material are conventionally arranged at intervals of one foot (about 303 mm), but the heat-generating panels 20a, 20b and 20c of the floor heating sheet 20 are arranged between the adjacent joists 9. Heating panel 20a,
The width of 20b and 20c is set to 250 mm. The gap between the heat generating panels 20a, 20b, 20c of the floor heating sheet 20 is also set to 53 mm in consideration of the width 45 mm of the joist 9 conventionally used. The floor heating sheet 20 configured as described above is also constructed as shown in FIGS. The connecting portion 14 of the floor heating sheet 20 is inserted into the notch 16a of the joist 9 or the gap 16b of the small joist 18 or the like.

In this embodiment, the heat source uses a heat-sensitive heating wire 21 having a temperature detecting function.
A heat-sensitive wire for detecting temperature, which is generally called a two-wire system, and a heat-generating wire that generates heat by supplying electric power are separately provided. The heat source may be a combination of a plurality of formed ones.

The connecting portion 14 of the floor heating sheet 20 is made of a heat-sensitive heating wire 21 which is a flexible material, a surface material 23 made of aluminum foil, and a back material 24 made of a fibrous nonwoven fabric.
, It is flexible and can be easily folded, and a plurality of heat generating sheets 20a, 20b, and 20c can be folded so as to overlap with each other. Further, since the heat-sensitive heating wires 21 built in the heat-generating sheets 20a, 20b, 20c and the connecting portion 14 are constituted by a single electric wire having no connecting portion, there is no occurrence of poor connection or the like, and reliability is improved. high. In addition, floor heating sheet 20
Since there is no need to incorporate a temperature control element such as a thermostat, it can be formed as thin as a minimum of about 3 mm, the cost of members can be reduced, and the weight of the product can be reduced, so that transportability and workability are excellent.

Next, an example of the embodiment shown in FIG. 8 will be described. FIG. 8 is a perspective view of the floor heating panel. Also in the case of this example, the floor heating panel 1 has basically the same structure as the floor heating panel shown in FIG. 2, and the floor heating panel 1 has three heating panels 1a, 1b,
1c and a connecting portion 14 connecting the three heat generating panels 1a, 1b, 1c. In the case of this example, the connecting portion 14 is provided.
Are composed of electric wires 14a that are electrically connected to each other. Also, a cable line 15 for supplying commercial power to the heater wire is provided at one corner of the outer periphery of the heat generating panel 1c of the floor heating panel 1.
Is provided with a terminal box 25 for connecting.
Since the flexible panels 14a are used between the heating panels 1a, 1b, and 1c as described above, the heating panels 1a, 1b, and 1c can be easily folded so as to overlap each other.
Excellent storage and transportability.

Further, the floor heating panel 1 and the floor heating sheet 20 of the above embodiment are all provided with a plurality of rows of heat generating panels 1a, 1b, 1c, and heat generating sheets 20a, 20b, 20.
When c is the same width and the connection interval is the same, the width of the joists supporting the floor material and the laying interval can be made uniform, and the load strength of the floor can be made uniform.

Next, examples of the embodiment shown in FIGS. 9 and 10 will be described. 9 shows another example of a heat-sensitive heating wire which also functions as a heat-generating body and a heat-sensitive body as a temperature detecting means. This heat-sensitive heating wire 2
Reference numeral 6 denotes a first electrode wire 26a formed by spirally winding a metal conductor wire around an electrically insulating thread 26d as shown in FIG. 9, and covering the surface with a heat-sensitive heating material 26c. A second electrode wire 26b is formed by winding a metal conductor wire in a spiral shape, and the surface is finally covered with an electrically insulating coating material 26e. A commercial power supply is supplied to the first and second electrode wires 26a and 26b to cause the heat-sensitive material 26c to generate heat. As shown in FIG. 10, the heat-sensitive heating material 26c has a positive characteristic in which the resistance value changes in a direction in which the resistance value increases when the temperature rises, so that the AC current flowing into the first and second electrode wires 26a and 26b when the temperature rises Decrease.

[0035]

According to the first aspect of the present invention, there is provided a floor surface material, a plurality of floor surface material support members for supporting the floor surface material at an arbitrary interval, and a floor surface material which is adjacent below the floor surface material. In a floor heating device including a plurality of heat generating members that are disposed between the support members and generate heat when electric power is supplied, a space that allows communication between adjacent heat generation members via a floor surface material support member between the adjacent heat generation members is provided. Since the connecting portion that is formed and at least electrically connects the adjacent heat generating members is inserted into the space, it can be constructed using a plurality of heat generating members connected in advance by the connecting portions, and the floor surface material supporting member can be formed. This eliminates the need for connection work for cable lines connecting adjacent heat-generating members, thereby improving workability.

In the invention of claim 6 of the present invention, since the connecting portion is formed so as to have flexibility, the connecting portion can be bent to improve workability.

According to the seventh aspect of the present invention, since the connecting portion is foldable so that a plurality of heat generating members can be overlapped, even if the plurality of heat generating members are connected, the heat generating members can be folded. It can be made compact to improve storage and transportability.

According to the eleventh aspect of the present invention, since the temperature detecting means is a linear or planar heat-sensitive body, the temperature detecting means can be made thinner than that using a thermostat.
The material cost is reduced and the product weight is reduced.

According to the twelfth aspect of the present invention, since the temperature detecting means is a heat-sensitive body and the heat-generating body is also used as a heat-sensitive body, a connection failure may occur as in the case of using a thermostat. There is no need for surface materials and heat equalizing sheets as in the past, so the product structure is simplified and productivity is improved, and the weight of the product is reduced, improving workability. You can do it.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of an example of an embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view of the floor heating panel according to the first embodiment.

FIG. 3 is a partially cutaway perspective view of a construction example different from FIG.

FIG. 4 is a perspective view of another example of the floor heating sheet according to the first embodiment.

FIG. 5 is a partially cutaway sectional view of the floor heating sheet of the above.

FIG. 6 is a partial perspective view of the heat-sensitive heating element according to the first embodiment.

FIG. 7 is a graph showing a temperature / AC voltage characteristic voltage of the heat-sensitive heating element according to the first embodiment.

FIG. 8 is a perspective view of another example of the floor heating panel of the above.

FIG. 9 is a partial perspective view of another example of the heat-sensitive heating element of the above.

FIG. 10 is a graph showing resistance and temperature characteristics of the heat-sensitive heating element of the above.

FIG. 11 is a partially cutaway perspective view showing a conventional floor heating panel.

FIG. 12 is a partially cutaway perspective view showing a conventional construction.

[Explanation of symbols]

 Reference Signs List 1 floor heating panel 1a, 1b, 1c heating panel 14 connecting part 4 heater wire 9 joist 13 controller 16 space 18 small joist 20 floor heating sheet 20a, 20b, 20c heating sheet

Claims (14)

[Claims] 1. A floor surface material, a plurality of floor surface material support members for supporting the floor surface material at arbitrary intervals, and a floor surface material support member disposed between the floor surface material support members adjacent to and below the floor surface material. In a floor heating device including a plurality of heat generating members that generate heat by energization, a space is formed to allow communication between adjacent heat generating members via a floor surface material supporting member between adjacent heat generating members, and at least the adjacent heat generating members are connected to each other. A floor heating device, wherein a connecting portion for electrically connecting is inserted into the space. 2. The heat generating member according to claim 1, wherein the heat generating member is a planar heat generating member in which a heat generating element is held by a sheet.
The underfloor heating device as described. 3. The connecting portion is provided integrally with the upper surface of the heat generating member so as to be flush with the upper surface of the heat generating member, and an electric wire or a heat generating wire is inserted into the connecting portion to be electrically connected. Or the floor heating device according to claim 2. 4. The floor heating device according to claim 3, wherein the space provided in the floor surface material supporting member is a notch opening an upper surface, and a connecting portion is fitted into the notch and the connecting portion is inserted. 5. The floor heating device according to claim 1, wherein the connection portion is an electrical connection such as an electric wire. 6. The floor heating device according to claim 1, wherein the connecting portion is formed to have flexibility. 7. The floor heating device according to claim 6, wherein the connecting portion is foldable so that a plurality of heat generating members can be overlapped. 8. The floor heating device according to claim 2, wherein the heating element is a linear or planar heating element. 9. A temperature control means is connected to the heating element,
9. The floor heating device according to claim 1, wherein the temperature detecting means is provided near the heating element. 10. The floor heating device according to claim 9, wherein said temperature detecting means is a thermostat. 11. The floor heating device according to claim 9, wherein the temperature detecting means is a linear or planar heat sensitive body. 12. The floor heating device according to claim 9, wherein said temperature detecting means is a heat-sensitive body, and said heat-generating body is also configured as a heat-sensitive body. 13. The floor heating apparatus according to claim 1, wherein some or all of the plurality of floor surface material supporting members are arranged in parallel. 14. The floor surface material supporting member according to claim 1, wherein the plurality of floor surface material supporting members are arranged in parallel at substantially equal intervals.
3. The floor heating device according to 3.