| 摘要 |
In order to create a tubular electrical heating element for heating cylindrical parts, which consists of an inside tube (1) of metal, an electrical heating body (2) that is wound onto the inside tube (1) in the form a coil, a tubular outer casing (4) that is of stainless steel, as well as a thermoelectric element that is combined with the heating element and which is arranged within the protective tube (7), and which is simple to produce at the smallest possible dimensions and which permits simple positioning and simple replacement of the thermoelectric element, it is proposed that the inside tube (1) incorporate a longitudinal slot (8); and that the protective tube (7) be installed within the longitudinal slot (8) and secured in position, it being possible to position the thermoelectric element to any point within the protective tube or in front of the opening of the protective tube because of the sliding arrangement of the metal wires of the thermoelectric element or of the complete thermoelectric element.
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