1. Fields of the invention
The present invention relates to a conductive yarn and a cloth containing the same, especially to a cloth formed by woven yarns coiled around by heating elements for providing heat. The cloth is made into various objects that provide heat and against the cold so as to replace heating equipment.
2. Descriptions of Related Art
Most of conventional heating equipment such as heaters generates heat by electricity or gas. Then warm air is directed to each corner of a room by each vent. One of the features of hot or worm air is that the light warm air rises within a certain space in the beginning of heating. It takes large amount of electricity and time to make the temperature of the air in the space increase to a certain degree evenly. Moreover, the air in the space is drier, accompanying with thundering noises due to blowing and flowing of hot air.
Thus there is a need to provide a novel conductive yarn and a cloth containing the same that overcome the above shortcomings and have more practical value.
Therefore it is a primary object of the present invention to provide a conductive yarn and a cloth containing the same that overcomes shortcomings of heaters available now such as high energy consumption and energy loss. A cloth that gives heat is formed by woven yarns coiled around by heating elements. The cloth is made into various objects that keep warm so as to replace conventional heaters.
In order to achieve the above object, a conductive yarn according to the present invention is formed by a plurality of fibers whose outer surface is wound with a heating element helically. Thus a yarn with electrical conductivity and flexibility is produced.
Moreover, a cloth containing conductive yarns consists of threads arranged in different directions. The above conductive yarns are used as threads in a first direction while regular yarns with conductive metal wires arranged at the two sides thereof are used as threads in a second direction. The threads are woven to produce a cloth that gives heat while being conducted with electricity. The cloth can be made into mattress, curtains, textile wall coverings, oversleeves, knee braces, waist supports, foot pads, seat cushions, and carpets etc so as to replace various heating equipment.
The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein
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While producing or weaving various fabrics, the conductive yarn 1 that includes the yarn 11 having a plurality of fibers 111 and coiled around by the heating element 12 is disposed on the first (weft) direction.
The plurality of conductive metal wires 21 on two sides of the of the yarn 11 are used as conductive yarns on the second (warp) direction while the yarns 11 on the middle part of the cloth 2 are all regular yarns 11. The conductive metal wires 21 can be fine copper wires or silver wires. Thus the yarns 11 on the second (warp) direction of different colors, the heating elements 12 wound around the surface of the conductive yarns 1, and the conductive metal (fine copper wire or silver wire) wires 21 on two sides of the cloth 2 are woven and interlaced with one another in the warp and weft directions so as to form a conductive path. A power supply unit 3 provides alternating current (AC) or direct current (DC) power, OV-24V, to the conductive metal wire 21 disposed on the two edges of the cloth 2 while the voltage (V), current (A), temperature (T), and time are fine tuned by a computer. The cloth 2 provides the temperature desired ranging from 0 degrees Celsius (° C.) to 85° C. Thus a required uniform temperature is generated among yarns of the whole cloth 2. Due to low DC used, there is no risk of electric shock.
In use, a fixed or moveable carpet is placed on the ground indoors for providing warmth. Within the same unit area, each small unit in the plane gives uniform heat. Thus there is no need to deliver hot air by blowers because heat rises. The heat from electric carpets produced by cloth containing conductive yarns of the present invention rises from the floor or the bottom of the carpet to each corner of the space naturally until the temperature is increased to a given value. Therefore, there is no dryness, noises or other uncomfortable feelings caused by hot air.
Moreover, the cloth 2 containing the conductive yarn can be cut in the second (warp) direction. The cutting length/size is determined according to users' requirements. Therefore, after the conductive metal wire 21 disposed on two edges of the cloth 2 being connected in parallel/series and conducted with electricity, another piece of cloth 2 that gives off heat is formed and applied to our daily lives for providing warmth.
Compared with the devices available now, the present invention has following advantages:
Additional advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details, and representative devices shown and described herein. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.
This invention is filed by claiming a priority from an U.S. provisional application with a Ser. No. 61/275,127, filed on 25 Aug. 2009.
Number | Date | Country | |
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61275127 | Aug 2009 | US |