JP2010107090A - Heater wire unit and floor-heating structure using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heater wire unit and a heating floor structure that very much facilitates construction of an electric floor heating structure. <P>SOLUTION: The heater wire unit 20, with a plurality of heater wires 21 arranged in parallel connected in parallel on one end side, is arranged on the underfloor ground surface. A long-sized floor material B, formed by machining storage grooves 16 for storing the heater wires 21, in parallel, in the short-side direction is arranged on the underfloor ground surface so that the heater wires 21 are stored in the storage grooves 16. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a heater wire unit used for floor heating and a floor heating structure using the same.

  It is known to construct an electric floor heating structure using a heater panel in which a heater wire is incorporated on the back side of a flooring material having a plywood or the like as a base material (see Patent Document 1). Usually, a flooring material having plywood or the like as a base material is 300 to 330 mm (width) × 800 to 1900 mm (length), and a wide width is obtained. A concave groove for accommodating the heater wire can be formed, and a heater wire having a long length is embedded therein to form an integrated heater panel. When constructing the floor heating structure, put a heat insulating material such as foamed resin between the floor structure and the joists, and paste the base plywood on the floor so that there is no unevenness, then attach the base plywood As the floor base surface, the necessary number of integrated heater panels in which the above-described heater wires are integrated are laid while being electrically connected. In addition, a border panel without a heater is laid on the periphery. For example, the power line extending from the heater panel is drawn to the wall surface or the like through the back of the base plywood and connected to a controller or the like attached to the wall surface.

JP 2000-179876 A

  In recent years, floor materials made of solid wood such as oak, birch, and beach have come to be used in search of luxury and the unique depth, taste and warmth of solid wood. However, when a floor material is cut out from a solid material, it is not possible to cut out a large thing in order to ensure homogeneity, and a plywood or the like of 70 to 80 mm (width) × 800 to 1900 mm (length) is used as a base material. It must be narrow compared to the flooring that it has. It is impossible to form a ditch required for embedding a long heater wire in the back of a single narrow solid flooring, and there is no space for an electrical connection such as a power connection outlet. Since it is difficult to form on the back surface, it is not currently possible to manufacture an integrated heater panel in which a heater wire is integrated into a floor material made of a solid material.

  Therefore, in order to construct an electrical floor heating structure using a floor material made of solid material, an electrical floor foundation panel in which a long heater wire is arranged in a predetermined pattern on the floor foundation surface and In addition, two steps of arranging a plurality of solid floor materials from the top of the electric floor base panel after construction are necessary. In this construction, it is necessary to adjust the peripheral area other than the floor heating range to the same height as the floor base panel. For example, it is necessary to work such as raising the peripheral area with plywood having the same thickness as the electric floor foundation panel or lowering the floor height only at the location of the electric floor foundation panel. In addition, since the floor material made of solid material is narrow in width, the heater could be accidentally damaged with the fixing nails when the floor material was fixed.

  Therefore, the current situation is that the work of constructing an electric floor heating structure using a floor material made of a solid material is time consuming and expensive.

  The present invention has been made in view of the above circumstances, and in constructing an electric floor heating structure, it is a first matter to disclose a heater wire unit capable of extremely facilitating the work content of each process. It is an issue. A second problem is to disclose a heating floor structure that can be constructed in a short time and at a low cost by using the heater wire unit.

  The heater wire unit according to the present invention includes at least a configuration in which a plurality of heater wires arranged in parallel are connected in parallel on one end side. In another aspect of the heater wire unit according to the present invention, a plurality of heater wires arranged in parallel are connected in parallel on one end side, and the long floor material is arranged so as to accommodate the parallel connection portion of the heater wires. Is integrally incorporated.

  The above heater wire unit can secure a necessary amount of heat generation by a plurality of heater wires arranged in parallel. The length of each heater wire can be shortened by obtaining the same calorific value with a plurality of heater wires connected in parallel rather than with a single heater wire. Thereby, the operation | work which arrange | positions a heater line unit on a floor base surface becomes very easy.

  The heating floor structure according to the present invention uses at least the heater wire unit described above and a long floor material obtained by processing an accommodation groove for accommodating the heater wire in parallel in a short direction, and the heater wire unit. Is arranged on the floor base surface, and on the arranged heater wire unit, a large number of the elongated flooring materials are placed in the housing groove in a direction perpendicular to the arrangement direction of the heater wires. It is characterized by comprising at least a configuration arranged so as to be accommodated.

  In the above heating floor structure, as described above, the operation of arranging the heater wire unit according to the present invention on the floor base surface is easy, and the heater wires are also connected in parallel to a plurality of long floor materials to be used. Except for the one arranged on the one end side, it is possible to use a long floor material of the same shape formed by processing a storage groove for storing the heater wire in parallel in the short direction. The entire construction of the structure becomes easy and the construction cost is reduced. Moreover, it can be set as a heating floor structure, without performing a height adjustment process by using the same elongate flooring also for the peripheral area | region which does not arrange | position a heater wire unit. Also from this point, construction is easy and cost is reduced.

  In another aspect of the heating floor structure according to the present invention, as the heater wire unit, a long floor material is integrally incorporated so as to accommodate a parallel connection portion of the heater wires formed on the one end side. Use the heater wire unit. In this aspect, the handling of the heater wire unit at the construction site becomes easy, and the construction of the heated floor structure is further facilitated.

  In the heating floor structure according to the present invention, the long floor material used can be made of any material. It may be a long floor material using a plywood or the like as a base material. However, since the floor material made of solid material has to have a width of 70 to 80 mm as described above due to restrictions on cutting out, the floor material made of solid material should be used as the long floor material. Is a particularly preferred embodiment in the heated floor structure according to the present invention.

  According to the present invention, an electric floor heating structure and an electric floor heating structure using a floor material made of a solid material, although not limited thereto, can be easily and inexpensively constructed.

Hereinafter, the present invention will be described based on embodiments with reference to the drawings.
FIG. 1 is an exploded view of an example of a heater wire unit according to the present invention, and FIG. FIG. 1B is a plan view of the heat generating circuit body 20. In this example, the heating circuit body 20 includes a plurality (24 in the illustrated example) of heater wires 21 arranged in parallel and a power supply line that connects the heater wires 21 in parallel on one end side of each heater wire 21. 22. There is no restriction | limiting in the number and length of each heater wire 21, It sets suitably according to the floor heating structure to construct. As an example, the number of heater wires 21 may be 12 or 24, which is one unit. The length of each heater wire, that is, the protruding length from the power source wire 22 is preferably in the range of 300 to 4500 mm from the viewpoint of workability. Moreover, although the space | interval between each heater wire 21 is contacted according to the design value of floor heating capability, about 100-60 mm is preferable.

  The heater wire 21 may be a normal heater wire used in conventional electric floor heating, an example may be the PTC heater wire 40 shown in FIG. 8, or the three-wire heater wire 50 shown in FIG. The PTC heater wire and the 3-wire heater wire will be described later. Regardless of which heater wire is used, each heater wire 21 may have flexibility or may have rigidity sufficient to maintain a linear posture.

  FIG. 7 is a partial circuit diagram of the heat generating circuit body 20, and the power supply line 22 is formed by unifying two wires on the + side and the − side through an insulating layer (not shown). One end of 21 is connected to the + side power line, and the other end is connected to the − side power line. Thus, the plurality of heater wires 21 arranged in parallel are connected at one end to the power supply line 22 so that the heater wires 21 are electrically connected in parallel, and the other end is a free end. Preferably, the connecting portion between each heater wire 21 and power supply wire 22 is coated or potted with resin for the purpose of ensuring waterproofness.

  In this example, the end-like long flooring 10 is a flooring made of solid wood such as oak, birch, or beach, and has a thickness of about 12 mm and a width of about 75 mm. The length is slightly longer than the lateral width of the heat generating circuit body 20. As shown in FIG. 1A, the first concave groove 11 parallel to the longitudinal direction for the power supply line 22 to enter and the power supply of the heater wire 21 are formed on the back surface of the end-like long flooring 10. A plurality of second concave grooves 12 are formed parallel to the short direction for the portion connected to the line 22 to enter.

  As shown in FIG. 2, the elongate flooring 10 accommodates the parallel connection portion of the power supply line 22 and each heater line 21 in the concave grooves 11 and 12 so that one end side of the heater line is provided. It is attached by appropriate means. Thus, the heater wire unit A according to the present invention is obtained.

  FIG. 3 is a rear view of the elongated floor material B used together with the heater wire unit A. FIG. In this example, the long flooring B is made of a solid wood material such as oak, birch, beach, etc., as with the end long flooring 10 described above, and has a thickness of about 12 mm. Is about 75 mm and the length is about 1800 mm. On the back surface of the long floor material B, as shown in the figure, a plurality of concave grooves 16 into which the heater wires 21 in the heating circuit body 20 can enter are formed in parallel in the short direction. Although it is not essential, it is also possible to apply a tongue processing for joining to the periphery of the long floor material B and the periphery of the long floor material 10 for the end portion described above.

  Next, an example of a procedure for constructing a heating floor structure using the heater wire unit A and the elongated floor material B will be described. FIG. 4 shows an example of a floor foundation structure to be constructed. Here, this floor base structure is provided with a large pull 30 and a joist 31, and a heat insulating material 34 such as a foamed resin is inserted between the joists 31 and 31, and a base plywood 35 is pasted thereon so as not to be uneven. Yes. On the base plywood 35, either a sheet or film having a heat insulation function such as a foam sheet, or a sheet or film having moisture resistance, or both of them are spread, and then the heater wire unit A described above. Arrange the required number of sheets. Desirably, in the peripheral part of the base plywood 35, a floor material (not shown) having no groove on the back surface, more preferably, a back surface made of the same material as the long floor material B is not (or has) a groove. The flooring is arranged as a peripheral panel, and the heater wire unit A is arranged inside thereof.

  FIG. 5 shows a state in which one heater wire unit A is disposed on the base plywood 35. In the illustrated example, each heater wire 21 is linear. After the placement, if necessary, the position of the heater wire 21 is finely adjusted so that the heater wires 21 are parallel to each other. In addition, when each heater wire 21 has flexibility and has not made the straight line shape just before construction, the operation | work which adjusts an attitude | position so that each heater wire 21 may become a straight line shape is performed. And the operation | work which drops the part 22a extended from the heater line unit A of the power wire 22 to the downward direction of a floor base is performed, and the heater line unit A is fixed to the base plywood 35 by a suitable means after that. In addition, after fixing the heater wire unit A to the base plywood 35, the work of dropping the extended portion 22a of the power line 22 below the floor base may be performed. It is desirable to perform the work of dropping first.

  The required number of heater wire units A are arranged on the base plywood 35 in the same manner, and after the extended portion 22a of the power supply line 22 is dropped below the floor base, the power supply lines are connected to each other until the wall surface (not shown) Pull out and connect to a commercial power supply or connect to a controller attached to the wall.

  In parallel with this, as shown in FIG. 6, the required number of long flooring materials B is placed on a large number of linear heater wires 21 arranged in parallel on the base plywood 35. Are arranged sequentially from the end-like long flooring 10 side of the heater wire unit A so as to be orthogonal to the arrangement direction of the heater wires 21. The arranged long flooring B is fixed to the base plywood 35 by an appropriate means such as an adhesive or nailing. At that time, the work can be performed while visually confirming the position of the heater wire 21. Therefore, when the long floor material B is fixed by nailing, the heater wire is damaged by the nail that has been driven. It can be avoided reliably. Further, as described above, the concave grooves 16 are formed in the back surface of the long floor material B in parallel to the short direction, and the arrangement work of the long floor material B is easy. As described above, the long floor material B has a length of about 1800 mm, and is cut and arranged at an appropriate length at the end of the arrangement region of the heater wire unit A.

  By covering the entire surface of the heater wire unit A thus arranged with the elongated floor material B, the construction of the heating floor structure according to the present invention is completed. In addition, when each heater wire 21 has flexibility and has not made the linear form just before construction, the elongate flooring material B is arrange | positioned, without adjusting each heater wire 21 to a linear attitude | position beforehand. Sometimes, it is also possible to use the concave groove 61 formed on the back surface as a jig so as to adjust to a linear posture each time.

  In the above description, the heater wire unit A has been described in which the heat generating circuit body 20 and the end long flooring 10 are integrated in advance. However, only the heat generating circuit body 20 is used as the heater wire unit A. Can do. In that case, after the heat generating circuit body 20 which is the heater wire unit A is arranged on the base plywood 35, both the separately prepared long floor material 10 for the end and the long floor material B are separately heated. It is arranged on the heating circuit body 20 which is the unit A.

  Next, an example of the PTC heater wire 40 that is an example of the heater wire used in the heater wire unit A will be described. The PTC heater has a heating element layer having a positive resistance temperature coefficient, and when current flows therethrough and the temperature rises, the resistance value of the heating element layer increases and the current flowing through the heating element layer decreases, The function of suppressing the heat generation of the heating element layer, and conversely, when the temperature of the heating element layer decreases, the resistance value of the heating element layer decreases and the current flowing through the heating element layer increases to increase the heat generation of the heating element layer. Have. Therefore, there is an advantage that a required temperature condition range can be maintained for a long time without using an overheat prevention device such as a thermostat, and it is extremely suitable as a heater wire used in the heater wire unit A according to the present invention. is there.

  The PTC heater wire 40 shown in FIG. 8 has linear electrodes 41a and 41b arranged in parallel at a predetermined interval in the longitudinal direction, and has a positive resistance so as to cover the entire outer circumference in the axial direction of the linear electrodes 41a and 41b. A heating element layer 42 having a temperature coefficient is extruded into a circular or oval cross section, and an insulating sheath layer 43 is extrusion coated on the outer periphery of the heating element layer 42 to form a cross section in the short direction in a circular or elliptical shape. With the structure. A barrier layer 45 is interposed between the heating element layer 42 and the insulating sheath layer 43. Further, the heating element layer 42 is prevented from being deteriorated over time by heat, and stable heat generation is realized for a long time. Further, an insulator barrier 44 made of polyethylene resin or the like is disposed between the pair of linear electrodes 41a and 41b.

  FIG. 9 shows a three-wire heater wire 50 which is an example of a heater wire used in the heater wire unit A. The three-wire heater wire 50 is a three-wire heater including a first heating wire 51, a second heating wire 52, and a detection wire 53, and each wire melts due to abnormal heat generation of the heating wire. They are covered with coating resins 54, 55 and 56 made of a non-conductive material. As shown in FIG. 9 (b), the three lines are brought together to form a single line, and the whole is made of a non-conductive material having heat insulation such as heat-resistant PVC as shown in FIG. 9 (a). Covered with a covering material 57.

  The coating resins 54, 55, and 56 are thermoplastic resins such as nylon resins, fluororesins, or polyester resins. However, resins having different melting temperatures are used for the first coating resin 54 that covers the first heating wire 51 and the second coating resin 55 that covers the second heating wire 52. The melting temperature of the first coating resin 54 is 175 ° C., and the melting temperature of the second coating resin 55 is 270 ° C. That is, the second heating wire 52 is coated with the second coating resin 55 having a melting temperature higher than the melting temperature of the first coating resin 54. In addition, the same resin as the first coating resin 54 having a lower melting temperature than that described above is used for the coating resin 56 that covers the detection line 53, and the melting temperature is 175 ° C.

  These coating resins 54, 55, and 56 are present as they are during normal operation and function as insulating materials. However, when the first heating wire 51 or the second heating wire 52 is disconnected or partially disconnected, a spark or the like is generated, and an abnormal heating state exceeding the melting temperature is partially generated, it is melted and insulated. Loss of function.

  In order to connect the three-wire heater line 50 to the power supply line 22, one end of each of the first and second heating lines 51 and 52 is connected to the + and -side power supply lines 22 and the other The ends may be connected to each other as free ends. By using the three-wire heater wire 50 of this form, the assembly of the heating circuit body 20 of the heater wire unit A can be greatly facilitated.

  By using the three-wire heater wire 50 as the heater wire 21 to form a heating circuit including the resistor-equipped thermal fuse 60 shown in FIG. 10, high safety of the floor heating structure can be ensured. In this example, the power line 22 has a lead wire 24 connected to the detection line 53 of the three-wire heater line 50 in addition to the two power lines 22a and 22b on the + side and the − side, and A thermal fuse 60 with a resistor is connected to one power line 22a. That is, the first heat generation line 51 of each three-wire heater line 50 that is each heater line 21 is connected to one power supply line 22b, the second heat generation line 52 is connected to the other power supply line 22a, and the detection line. 53 are respectively connected to the lead wires 24.

  The resistor-equipped thermal fuse 60 includes a thermal fuse 61 and a resistor 62, and one side of the thermal fuse 61 is connected to the second heating wire 52 side of the three-wire heater wire 50 via the power line 22a. One side of the resistor 62 is connected to the detection wire 53 of the three-wire heater wire 50 via the lead wire 24, and the other side is connected to the side where the thermal fuse 60 is connected to the second heating wire 52. . The first heating wire 51 of the 3-wire heater wire 50 is connected to the other power supply wire 22b.

  In this heat generation circuit, in an environment where the operation is normally performed, power flows so as to circulate through the first heat generation line 51 and the second heat generation line 52 of each three-wire heater line 50 which is each heater line 21. The floor heating is performed by the generated heat. In any one of the three-wire heater wires 50, when a short circuit occurs between the first heating wire 51 and the detection wire 53, a short-circuit current flows to the resistor 62 of the resistor-equipped thermal fuse 60, and the heat The thermal fuse 61 is blown. Thereby, the heated floor structure is reliably guided to the safe side.

An example of the heater wire unit according to the present invention is disassembled and shown, and FIG. 1 (a) is a rear view of the end-like long flooring material attached to one end side of the heat generating circuit body constituting the heater wire unit, FIG. 1B is a plan view of the heat generating circuit body. The figure which shows an example of the heater wire unit by this invention. The rear view of the elongate flooring used with a heater wire unit. The figure which shows an example of the floor foundation structure when constructing the heating floor structure by this invention. The figure which shows the state which has arrange | positioned the heater wire unit to the floor ground surface. The figure explaining the state which arrange | positions an elongate flooring material on the heater wire unit arrange | positioned on a floor base surface. FIG. 3 is a partial circuit diagram of the heat generating circuit body 20. The figure for demonstrating the PTC heater wire which is an example of a heater wire. The figure for demonstrating the 3-wire type heater wire which is an example of a heater wire. The figure for demonstrating an example of the heat generating circuit in the case of using a 3-wire type heater wire.

Explanation of symbols

A ... Heater wire unit,
B: Long flooring,
10 ... Long floor material for end,
11 ... 1st ditch | groove parallel to the longitudinal direction for a power wire to enter,
12 ... a second groove parallel to the short direction for the portion of the heater wire connected to the power supply line to enter,
16 ... a groove into which the heater wire can enter,
20 ... exothermic circuit body,
21 ... Heater wire constituting the coater wire unit,
22 ... Power line 22a constituting the coater line unit ... Extension part of the power line,
23 ... Coating or potting with resin 30 ...
31 ...
34 ... heat insulation,
35 ... the base plywood that is the floor base,

Claims (6)

  A heater wire unit comprising at least a configuration in which a plurality of heater wires arranged in parallel are connected in parallel on one end side.   A plurality of heater wires arranged in parallel are connected in parallel on one end side, and a long floor material is integrally incorporated so as to accommodate the parallel connection portion of the heater wires. Heater wire unit.   The heater wire unit according to claim 2, wherein the elongated flooring is a flooring made of a solid material.   A heater floor unit in which a plurality of heater wires arranged in parallel are connected in parallel on one end side, and a long floor material obtained by processing a receiving groove for receiving the heater wire in parallel in the short direction. The heater wire unit is disposed on the floor base surface, and a plurality of the long floor materials are arranged on the arranged heater wire unit in a direction perpendicular to the arrangement direction of the heater wires. A heating floor structure comprising at least a configuration in which the heater wire is disposed so as to be accommodated in the accommodation groove.   As the heater wire unit, a heater wire unit in which a long floor material is integrally incorporated so as to accommodate a parallel connection portion of the heater wires formed on the one end side is used. The heating floor structure according to claim 4.   The heating floor structure according to claim 4 or 5, wherein the elongated flooring is a flooring made of a solid material.

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