a heating wire

Abstract

The invention relates to a heating wire and belongs to the field of heating wire structures. The heating wire is characterized in that: a loop wire (1) is covered in a hollow of a first insulation layer (3); a first coiled heating material layer (4) is covered on an outer layer of the first insulation layer (3) and connected with the top end of the loop wire (1) to form a loop; a second insulation layer (5) is covered on an outer layer of the first heating material layer (4); a second protection seal spring is covered on an outer layer of the second insulation layer (5); the second protectionseal spring is divided into a second protection seal spring thick section (6) and a second protection seal spring thin section (7) which have different thicknesses; and the first heating material layer (4) correspondingly covered in the second protection seal spring thin section (7) has a straight structure. When the heating wire is used, the thick section is arranged in a filter cup, and the thin section is arranged in a pipe passage in the filter cup; and the heating material layer in the filter cup has a coiled structure and the heating material layer in the pipe passage in the filter cup has the straight structure, so the energy consumption can be reduced, and the heating wire can meet the requirements for saving energy and reducing emission.

Description

technical field [0001] The invention relates to a heating wire, specifically a special wire for heating a diesel filter cup, and belongs to the technical field of heating wire structure. Background technique [0002] At present, the heating of diesel filter cups is generally heated by heating wires. Whether the heating wires are inside the filter cup or in the internal pipeline passage of the filter cup, the internal heating wire structure is the same. This structure makes the heating in the internal pipeline passage of the filter cup The hot wire is also generating a lot of heat, so that the temperature of the oil in the internal pipeline passage of the filter cup is too high, which is prone to gasification and hinders the oil passage, and the outer diameter of the heating wire is too thick relative to the internal pipeline passage of the filter cup, which affects the oil flow. Contents of the invention [0003] The purpose of the present invention is to solve the shortco...

AI Technical Summary

Problems solved by technology

[0002] At present, the heating of diesel filter cups is generally heated by heating wires. Whether the heating wires are inside the filter cup or in the internal pipeline passage of the filter cup, the internal heating wire structure is the same. This structure makes the heating in the internal pipeline passage of the filter cup The hot wire is also generating a lot of heat, so that the temperature of the oil in the internal pipeline passage of the filter cup is too high, which is prone to gasification and hinders the oil passage, and the outer diameter of the heating wire is too thick relative to the internal pipeline passage of the filter cup, which affects the oil flow

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