Double-spiral compound electrothermal wire

The utility model relates to a double-spiral compound electrothermal wire, which is mainly suitable for being used as electrothermal conducting wires of an electric blanket. The utility model is characterized in that the electrothermal conducting wire of the electrothermal wire and the temperature controlling sensor wire of the electrothermal wire adopt double-spiral compound structure; the electrothermal conducting wire and the temperature controlling sensor wire respectively circle on the surface of an insulated inner core and the interlayer surface in the middle; a layer of insulated plastic covers the outer layer; the inner layer enamelled copper wire and the outer layer enamelled copper wire circle contrarily, wherein the inner layer enamelled copper wire used as the electrothermal conducting wire can be connected with a power source; the outer layer enamelled copper wire used as the temperature controlling sensor wire can be matched with a temperature adjusting switch. The utility model can match with the temperature adjusting switch and can make the temperature of the electric blanket automatically adjustable and constant, with the advantages of novel structure, good backout resistance, impossible wire broken, safety, etc.