CN201080531Y - Electric heating fabric structure - Google Patents

Abstract

An electrothermal fabric structure features that during weaving, the heating resistor loop is directly woven on the same fabric, resulting in high productivity, light weight, high flexibility, high tension strength and water washing ability. The heating resistance loop has a terminal area for inputting power, and can form a uniform two-dimensional heating surface on the fabric with the heating resistance loop, so that the heating efficiency is high. The heating power of this heating resistance circuit can be adjusted and controlled during the weaving of the fabric, for example: the number of the conductive yarn on the fabric in the heating resistance loop, the twist of the conductive yarn on the heating resistance wire, the number of the heating resistance wire on the conductive yarn, the material and the wire diameter of the heating resistance wire, even the series-parallel connection mode of the heating resistance loop on the conductive fabric, and the like.

Description

Electric fabric structure

technical field

The utility model relates to a fabric, in particular to a fabric structure which directly weaves a heating resistance loop on the fabric to convert electric energy into heat energy.

Background technique

The manufacturing technology of the flexible heating sheet is known to use the heating resistance wire and the etching method to form the heating resistance circuit. As for the heating resistance wire, the heating resistance wire is arranged on a soft substrate according to the required power by using wiring equipment. In fact, this method requires special wiring equipment and technology, and the distance between lines is large, so the heat energy dissipated on the plane is relatively uneven. Secondly, when the heating area increases, the length of the heating resistance wire also increases accordingly, so that the weight of the soft base material on which the heating resistance wire is arranged also increases relatively.

In terms of etching to form the heating resistor circuit, it mainly uses the circuit etching process of the circuit board to etch the heating resistor circuit on the surface of a soft substrate. The heating resistor circuit is easily oxidized by water vapor and affects its stability and life. In addition, the heating resistor circuit will also be damaged or broken as the soft substrate is bent. In addition, although this heating resistor loop process can form a uniform two-dimensional heating surface, the required technicians and etching-related equipment are very expensive, and the corrosiveness or poison of the etching solution causes serious environmental problems in the etching process.

Utility model content

The purpose of the utility model is to provide an electric heating fabric, in order to overcome the defects in the known technology.

In order to achieve the above purpose, the electric heating fabric structure provided by the utility model is composed of a plurality of conductive yarns arranged in the warp direction, a plurality of conductive wires arranged in the weft direction, and at least one insulating yarn arranged in parallel between two conductive yarns. material, and a plurality of weft-arranged and insulated weft yarns to weave a fabric. The fabric uses conductive wires to interweave conductive yarns and isolation yarns to form a terminal area. The weft yarns interweave conductive yarns and isolation yarns to form a heating area. The terminal area is electrically connected to form a heating resistance loop, and the electric energy input into the terminal area is converted into heat energy in the heating area, so that the fabric forms a heating two-dimensional area in the heating resistance loop.

The electric heating fabric structure, wherein the conductive yarn is made of insulating yarn twisted with heating resistance wire.

The electric heating fabric structure, wherein the fabric utilizes cutting or knitting, warp knitting and weaving, and a plurality of heating resistor loops are connected in series or in parallel through the connection of the terminal area, and two adjacent heating resistor loops are separated by an insulating area .

The electric heating fabric structure provided by the utility model utilizes the following yarns to weave a fabric:

a. Conductive yarn, arranged in the warp direction, the conductive yarn is made of insulating yarn twisted heating resistance wire, the diameter of the heating resistance wire can be 1.0mm or less;

b. Conductive wires, arranged in the weft direction;

c. insulating spacer yarns, arranged in parallel between two conductive yarns; and

d. Insulated weft yarns are arranged in the weft direction;

The conductive wire interweaves conductive yarn and isolation yarn to form a terminal area on the fabric, and the weft yarn interweaves conductive yarn and isolation yarn to form a heating area on the fabric. The heating area is electrically connected to the terminal area to form a heating resistance circuit. The electric energy in the terminal area is converted into heat energy in the heating area.

The electric heating fabric structure, wherein the heating resistance wire is made of one of stainless steel, nickel-chromium (NiCr) alloy, copper-nickel alloy, iron-chromium alloy, iron-chromium-aluminum (FeCrAl) alloy or other ultra-fine metal alloy wires.

The electric heating fabric structure, wherein the insulating yarn material, weft yarn and insulating yarn are made of one of aramid fiber, carbon fiber, oxidized fiber, glass fiber or other temperature-resistant insulating fiber.

In the electric heating fabric structure, a temperature-resistant protective layer is pasted on the surface of the fabric.

The electric heating fabric structure, wherein the protective layer is made of silica gel (Silicone Rubber), polyester film (Polyester Film), polyvinyl chloride (Polyvinylchloride referred to as PVC), polyurethane (polyurethane referred to as PU) or Kapton polyimide film (Kapton Polyimide) Film).

In a nutshell, the electric heating fabric structure of the utility model is that the heating area is electrically connected to the terminal area to form a heating resistance circuit on the same fabric, and the electric energy in the input terminal area can be converted into heat energy in the heating resistance circuit to form a uniform two-dimensional heating circuit. area.

The electric heating fabric structure of the utility model consists of a plurality of conductive yarns arranged in the warp direction, a plurality of conductive wires arranged in the weft direction, at least one insulation yarn material arranged in parallel between two conductive yarns, and a plurality of weft Weaving a fabric to the aligned and insulated weft yarns, the fabric uses conductive wires to interweave conductive yarns and isolation yarns to form a terminal area, the weft yarns interweave conductive yarns and isolation yarns to form a heating area, and the heating area is electrically connected to the terminal area to become A heating resistance loop, the electric energy input into the terminal area is converted into heat energy in the heating area, so that the fabric forms a heating two-dimensional area in the heating resistance loop.

The utility model completely overcomes the problem that the weight increases due to the increase of the heating area when the heating resistance wire is used for wiring. In addition, the utility model not only has the uniformity of the etching resistance circuit, but also has better service life, tensile strength and environmental protection than the etching resistance. The circuit is better.

Description of drawings

Fig. 1a is a schematic diagram of an embodiment in which an insulating yarn and a heating resistance wire are twisted together by a core-twisting method to form a conductive yarn.

Fig. 1b is a schematic diagram of an embodiment in which the insulating yarn and the heating resistance wire are twisted by another core twisting method to form a conductive yarn.

Fig. 1c is a schematic diagram of an embodiment in which insulating yarns and heating resistance wires are twisted together to form conductive yarns by cross-twisting method.

Figure 2 is an enlarged detail view of a woven fabric showing the braided portions of the terminal area and heat generating area.

Figure 3 is a partial side view of a fabric attached to a surface with a protective layer.

Fig. 4 is a schematic plan view of a fabric series (parallel) heating resistance circuit.

Detailed ways

In order to better understand the technical content of the present utility model, specific embodiments are described in detail below with accompanying drawings.

First of all, the utility model is to combine and twist the heating resistance wire and the insulating yarn into a conductive yarn, and the twisting method can be a kind of core twisting method of textile technology. Please refer to FIG. 1 a , using an insulating yarn 11 as a core wire, two heating resistance wires 12 are twisted alternately around the insulating yarn 11 to form a conductive yarn 1 .

The same core twisting method (Coupling), but FIG. 1b shows a different approach, the heating resistance wire 12 whose number is reduced to one is wound with an insulating yarn 11 and a conductive yarn 1 is twisted together.

The number of heating resistance wires 12 twisted in the conductive yarn 1 directly affects the resistance heating performance. Generally speaking, the more the heating resistance wires 12 are twisted into the conductive yarn 1, the smaller the resistance is.

FIG. 1 c provides another twisting method (Twisting), which shows an insulating yarn 11 and a heating resistance wire 12 intertwined and twisted to form a conductive yarn 1 .

As far as the textile twisting technology is concerned, the distance that a single heating resistance wire 12 makes one turn according to the twist direction is a lay length 13, and the length of the lay length 13 can be adjusted. The twist of the heating resistance wire 12 on the conductive yarn 1 is measured by several turns per hour (Twist Per Inch, abbreviated as TPI), so the twist of the heating resistance wire 12 on the conductive yarn 1 is at least 1tpi (twist per inch) .

According to Joule's law Q=I ² Rt, the heat Q is proportional to the square of the current I, the resistance R of the conductor, and the electrification time t.

The calculation formula of resistance R and resistivity ρ, length l and cross-sectional area A:

R=ρ(l/A)

Because the resistance R is directly proportional to the length l and inversely proportional to the cross-sectional area A, the greater the twist, the longer the heating resistance wire (12), the greater the resistance, and the relative increase in heat.

Next, Figure 2 shows a detailed enlarged view of weaving an electrothermal fabric. According to the requirements of heating power and heating area, a plurality of conductive yarns 1 are arranged in parallel on the warp direction 21, and at the same time, between two adjacent conductive yarns 1, each conductive yarn is separated by at least one insulating insulating yarn material 3 1 are separated by insulation, the important thing is: the more conductive yarn 1 is discharged, the lower the resistance of the relative ground.

Then use the low-resistance conductive wire 4 and the insulating weft yarn 31 to weave vertically according to the weft direction 22 , and weave a fabric 2 in contact with the conductive yarn 1 and the isolation yarn 3 in the warp direction. Wherein, the conductive wire 4 may be one of conductive metal wires such as copper wire or silver wire.

In the fabric 2, the portion of the conductive wire 4 woven with the plurality of conductive yarns 1 and the isolation yarn 3 according to the weft direction 22 forms a terminal area 24, and the terminal area 24 can be used to connect to a power source, and the conductive connection method can be selectively welded. One of the technical means such as fastener connection or sewing connection shall be implemented.

In the fabric 2, the part of the weft yarn 31 woven with the plurality of conductive yarns 1 and the isolation yarn 3 according to the weft direction 22 forms a heating area 23, and the heating area 23 is electrically connected to the terminal area 24 to form a heating resistance circuit. . Power is input into the terminal area 24, and a two-dimensional heating area with uniform heating is formed in the heating area 23 through this heating resistance circuit, so this embodiment is a structure of an electric heating fabric 2 .

FIG. 3 shows that a temperature-resistant protective layer 5 is pasted on the surface of the fabric 2 . The protective layer 5 is preferably in the form of a film to prevent the human body from touching the conductive parts of the fabric 2 . Wherein, the fabric 2 is soldered to a terminal area 24 for connecting a power line 25 .

The protective layer is insulating, selected from silica gel (Silicone Rubber), polyester film (PolyesterFilm), polyvinyl chloride (Polyvinylchloride referred to as PVC), polyurethane (polyurethane referred to as PU) and DuPont Kapton polyimide film (Kapton Polyimide Film) ) One of the temperature-resistant materials is made into a film.

Know from above-mentioned technical content, because the fabric 2 that present embodiment produces is light in weight, as thin as film, is easy to carry, heat dissipation efficiency height and washable etc., the scope of application is quite extensive, for example: mountaineering clothes, protective gear, Clothing for women's menstrual period, baby bottle insulation, hiking shoes, medicinal cloth for hot compresses, soft heaters, and even laying on the roof surface to remove snow and melt ice, etc. can be used.

In addition, when implementing the electric heating fabric of the present invention, the heating resistance wire 12 and the conductive wire 4 can choose a single or different conductive metal wires for weaving; similarly, the insulating yarn 11, the isolation yarn 3 and the weft yarn 31 can also choose a single Or different insulating yarns to weave.

FIG. 4 shows another embodiment. It can be seen from the figure that a plurality of heating resistor loops 231 are arranged in parallel on the same fabric 2 , and an insulating region 232 is woven with insulating yarn between two adjacent heating resistor loops 231 . The multiple heating resistor loops 231 are formed into series or parallel loops in the terminal area 24 by tailoring, or the series or parallel connections of the heating resistor loops 231 are completed by knitting, warp knitting, knitting, etc., which will have more impact on the design of the circuit. Great flexibility and simplicity.

Claims (8)

1. electric heating fabrics structure, it is characterized in that, by many conductive yam that are arranged in warp-wise, many the electric wires that are arranged in broadwise, at least one insulation and be parallel to isolation yarn material between two conductive yam, and many weft weaving one fabrics that broadwise is arranged and insulated, this fabric is with interweave conductive yam and isolate the yarn material and become a terminal region of electric wire, interweave conductive yam and isolate the yarn material and become a hot zone of this weft yarn, this hot zone electrically connects terminal region becomes a heating resistor loop, the electric energy of importing this terminal region converts heat energy in the hot zone, and this fabric forms the 2 dimensional region of heating in the heating resistor loop.

2. according to the described electric heating fabrics structure of claim 1, it is characterized in that wherein this conductive yam is closed by the insulation yarn and twisted with the fingers the heating resistor line and form.

3. according to the described electric heating fabrics structure of claim 1, it is characterized in that, wherein this fabric is to cut out or fabric knitting, through compiling and weaving, and the connection of this terminal region is in series or in parallel with most heating resistors loop, separates with an insulation layer between the adjacent two heating resistor loops.

4. an electric heating fabrics structure is characterized in that, is following yarn weaving one fabric:

A. conductive yam is arranged in warp-wise, and this conductive yam is twisted with the fingers the heating resistor line for the insulation yarn closes, and the line of this heating resistor line directly is 1.0mm or following;

B. electric wire is arranged in broadwise;

C. Jue Yuan isolation yarn material is parallel between two conductive yam; And

D. Jue Yuan weft yarn is arranged in broadwise;

Interweave conductive yam and isolate the yarn material and on fabric, constitute a terminal region of this electric wire, interweave conductive yam and isolate the yarn material and on fabric, constitute a hot zone of this weft yarn, this hot zone electrically connects terminal region becomes a heating resistor loop, and the electric energy of importing this terminal region converts heat energy in the hot zone.

5. according to the described electric heating fabrics structure of claim 4, it is characterized in that wherein this heating resistor line is made by one of superfine metal alloy wire of stainless steel, nichrome, corronil, ferrochrome, Aludirome.

6. according to the described electric heating fabrics structure of claim 4, it is characterized in that wherein this isolation yarn material, weft yarn and insulation yarn are made by one of heatproof non-conductive fibre of aromatic polyamide fibre, carbon fiber, oxidized fibre, glass fibre.

7. according to the described electric heating fabrics structure of claim 4, it is characterized in that, wherein this fabric face protective layer of a heatproof of fitting.

8. according to the described electric heating fabrics structure of claim 7, it is characterized in that wherein this protective layer is made by one of silica gel, polyester film, polyvinyl chloride, polyurethane or Kapton Kapton.

Images