JP2009110902A - Heating element of fabric having parallel structure which is constituted of double conducting band, and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating element of fabric which can be used by a power supply of 100 V or 220 V that is a generally used voltage. <P>SOLUTION: When the heating element is realized by utilizing a weaving machine, the heating element in which a double conductive band 31 is formed in respective both ends of the heating element is produced, and only by cutting a fixed part of an inside conductive band 32 of the double conductive band 31, and by cutting a fixed number of a heating wire 11 connected between the inside conductive band 32 and an outside conductive band 33, these heating wires 11 become to have a series of tandem structure. By repeating this method continuously for a plurality of times, all the heating wires 11 come to be coupled with the outside conductive band 33 in parallel to which the power supply is connected. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a woven heating element having a double conductive band at each end of the heating element.

A conventional woven fabric heating element is disclosed in, for example, Patent Document 1, and is a woven heating element having a parallel structure in which a large number of heating wires (metal fine wires) are woven together with conductive wires.
Korean Utility Model Registration No. 110067

  A conventional method of manufacturing a heating element woven by a loom is that a large number of fine metal heating wires are arranged in parallel between the spun yarns in the warp direction, and the weft direction conducts at a certain part of the upper and lower ends of the heating element with spinning. A certain portion is assembled while being orthogonal to the line several times to form a conductive band. The space between the two conductive bands is filled with the spun yarn of the weft to complete one heating element. The heating element manufactured by such a manufacturing method has the following disadvantages in its structure.

  First, the number of heating wires arranged in parallel and the combined resistance value of the heating elements having these heating wires are in an inversely proportional relationship. Therefore, if the number of heating wires arranged in parallel is increased in order to increase the durability of the heating element or reduce the non-heating portion between the heating wires and make the heat distribution uniform, the power supply voltage used Is relatively lowered. For this reason, the heating element of the fabric manufactured by the conventional manufacturing method cannot be used with a power supply of 100 V or 220 V, which is a generally used voltage. (See Ohm's Law Voltage = Current x Resistance).

  In addition, since the heating element of the woven fabric manufactured by the conventional manufacturing method is woven with a large number of heating lines arranged in the warp direction, the heating line is caused by rubbing and friction due to the reciprocating motion of the loom leads during the spinning process. Will be damaged. For this reason, the heating element of the woven fabric also has a problem that the heating wire is easily broken during use.

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a fabric heating element that can be used with a power supply of 100 V or 220 V, which is a commonly used voltage.

  In order to solve the above problems, the heating element of the woven fabric of the present invention eliminates the friction damage with the loom lead by converting the heating line used as the warp yarn into the weft yarn in the conventional method, and the warp yarn. In order to realize two conductors parallel to each other at a certain distance, a conductive wire group, which is a thin wire, is connected to the heating line of the weft yarn at each end of the warped beam of the spun yarn. It is to complete a heating element of a fabric having a double conductive band by being assembled, a part of the inner conductive band of the double conductive band, and the outer conductive of the inner conductive band and the double conductive band. By cutting a part of the heating wire connected between the bands, a certain heating wire is connected in series without a separate connecting step such as soldering, and further, depending on the required area Parallel heating lines connected by the above method multiple times By continued, all of the heating wire to the outer conductive Zinn power is connected is to be connected in parallel, it is possible to realize a heating element of the high-quality fabric with the advantage of parallel structure.

  As described above, the woven fabric heating element of the present invention has a completely parallel structure when viewed from the power source side, so that the function of the entire heating element is paralyzed even if some heating lines break. Don't be. In addition, when the heating wire breaks during use, the resistance value of the heating element is relatively increased, so the risk of fire is theoretically completely zero, ensuring a uniform heat distribution while providing durability. In addition, the connection between the heating wire and the conductive band does not require a separate connection process such as terminal processing or soldering, and has a feature that it can be achieved only by perforation.

  A specific embodiment of the present invention will be described in detail with reference to FIGS.

  First, referring to FIG. 1, in order to weave the woven heating element 10, in the preparation stage, the conductive wire 30 is first passed through a heel, that is, when a thread is passed through the heel. The necessary number of spun yarns 20 are passed from both ends of the required width of the heating element to a woven edge (waste selvedge) and an end knitting (binding).

  Subsequently, the conductive wire 30 sufficient for the load current capacity is sequentially passed. For example, in the case of a load capacity of 500 W class, in consideration of frictional damage with the lead, in order to more surely couple with the heating wire, the conductive wire 30 is composed of 15 sets of 0.08 mm × 13 wires. Use conductive wires of a degree.

  Next, in consideration of the insulation distance between the inner and outer conductive bands and the ease of work when cutting the heating wire connected between the inner and outer conductive bands, the spun yarn 20 is passed through to a width of about 15 mm. After passing through the number of conductive wires 30 that can sufficiently cope with the load current capacity, the remaining portion is completed with the spun yarn 20. Thereafter, through the weaving process, the warp conductive wire 30 is overlapped with the weft heating wire 11 to form a double conductive band 31.

  FIG. 2 shows conductor parts 32A, 32B, and 32C included in the inner conductive band 32 included in the double conductive band 31 in accordance with a design specification that takes into account heat distribution, durability, and resistance value of the heating element depending on a required area. And 32D, and the heating wire portions 11V, 11W, 11X, and 11Y of the heating wire 11 connected between the inner conductive band 32 and the outer conductive band 33 are cut. As a result, the heating wires 11A, 11B and 11C are connected in series to both sides of the outer conductive band 33, and at the same time, by repeating this series connection in parallel, all the heating wires are connected in parallel to both sides of the outer conductive band 33. Try to be linked.

  By the above method, the woven fabric heating element having a parallel structure configured as a double conductive band which is the gist of the present invention is completed.

  Next, the content of the present invention will be described in detail with reference to a mathematical formula and drawings as follows.

  Assume that a heating element having a working voltage of 100 V, a heating element resistance value of 40Ω, a load capacity of 250 W, a heating element having a horizontal length of 120 cm, and a heating element having a vertical length of 180 cm is prepared. However, a nichrome wire having a resistance value of about 297Ω is used per 1 m of the heating wire.

  There are various methods for realizing the heating element resistance value of 40Ω required for the heating element, but the best method based on experience is to increase the number arranged in parallel in consideration of uniform heat distribution and durability. Therefore, in order to increase the resistance value of the heating wire, it is necessary to reduce the number of parts connected in series as much as possible.

  Therefore, when the interval between two heating lines is 1 cm, the number of heating lines arranged in a width of 120 cm is 121 according to the following formula.

120 cm ÷ 1 cm + 1 = 1 121 The resistance value of one heating wire is 534Ω according to the following equation.

1.8m × 297Ω ≒ 534Ω
In FIG. 2, the heating element portions 32 </ b> A, 32 </ b> B, 32 </ b> C and 32 </ b> D included in the inner conductive band 32 and the heating wire portion 11 </ b> V included in the heating wire 11 connected between the inner conductive band 32 and the outer conductive band 33, If 11W, 11X and 11Y are drilled with a press and the connection ring is cut, the heating wires 11A, 11B and 11C will have a structure connected in series on both sides of the outer conductive band 33. The combined resistance value is 1602Ω according to the following equation.

534 Ω x 3 = 1602 Ω
When the above-described series-connected structures are connected in parallel about 40 times, a fabric heating element having one completed parallel structure having a required heating element resistance value of 40Ω can be realized.

1602Ω ÷ 40 = 40Ω
The heating element resistance value 40Ω is an expression for calculating a combined resistance value R of a plurality of resistors connected in parallel: 1 / R = 1 / R ₁ + 1 / R ₂ + 1 / R ₃ +. It is calculated based on the 1 / _{R n.}

It is a figure which shows the structure of the heat generating body of the textile fabric which concerns on embodiment of this invention. It is a figure which shows the example of the heating wire | line of a textile fabric shown by FIG. 1, a double conductive belt, and how to cut.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Heating element of textile 11 Heating wire 20 Spinning yarn 30 Conductive wire 31 Double conductive band 32 Inner conductive band 33 Outer conductive band

Claims (4)

  A heating element formed of a woven fabric, wherein the heating element has a double conductive band at each end of the heating element. In the production of the heating element of the woven fabric according to claim 1,
The double conductive band has an inner conductive band and an outer conductive band,
By cutting a part of the inner conductive band and the heating wire connected between the inner conductive band and the outer conductive band, the remaining heating wires are connected to the outer conductive band, A method for connecting the heating wires in series.   The heating element of the parallel structure is configured so that all of the heating lines are connected in parallel to both sides of the outer conductive band by performing parallel connection by performing the method of serially connecting the heating lines according to claim 2 a plurality of times. Production method. It is a method to increase the resistance value of the heating wire,
A heating wire connecting method for cutting a part of a conductive band so that all of the heating wires are connected in a series of serial structures.

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