ES269555U - Resistor for heating of length surfaces and heating variable power. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Resistor for heating surfaces of variable length and heating power, characterized by being constituted by two conductive wires of appreciable diameter, flexible, to minimize the voltage drop across it, each of them provided with a common or individual insulating tubular coating and in the latter case advantageously joined by gluing or thermoplastic welding, on whose insulated conductors a winding wire is arranged in winding, which establishes stable contact with two alternate points of one conductor and another in sections that remain bare, separated from each other by a fixed distance along the longitudinal development of the pair of sheathed conductors, so that said wound yarn gives rise to the formation along the pair of insulated conductors, of a series of resistances in parallel, of identical value, given the uniform winding density of resistive wire per unit length, which gives rise to a power of this stimulation is directly proportional to the chosen cable length, there being a tubular shape in plastic material stable at the heating temperature provided by the resistances, which surrounds the two isolated primary cables and the wire wound on them. (Machine-translation by Google Translate, not legally binding)