Easily detachable annular electric heating device

Abstract

The utility model relates to the technical field of electric heating, in particular to an annular electric heating device easy to disassemble. An armored electric heater is wound on a heated end face, the heat conduction efficiency is extremely low, the maintenance performance is poor, and the replacement cost is increased. The detachable annular electric heating device comprises an armored electric heater and a heat conducting ring which are annular and are welded into a whole in the thickness direction; the ring shape of the armored electric heater is provided with a gap, and two ends of the gap are connected with wires; the axial annular end face of the heat-conducting ring is a mounting face and is fixed on a product through high-temperature-resistant heat-conducting glue. The contact between the electric heating device and the annular heating area is surface contact, and the gap between the electric heating device and the annular heating area is filled with the high-temperature-resistant heat-conducting glue, so that the heating uniformity and the heat transfer efficiency are improved, the electric heating device is convenient to disassemble subsequently due to other reasons, and the maintainability is better.

Description

Technical Field

[0001] This utility model relates to the field of electric heating technology, specifically to an easily detachable annular electric heating device. Background Art

[0002] For the special requirements of annular heating areas, the commonly used method is to wrap the armored electric heater around the end face to be heated and fix it by compression or other means. In this method, the electric heater and the end face to be heated are in line contact, and the heat conduction efficiency is extremely low. The heat generated by the electric heater cannot be conducted in time, which will cause the electric heater to overheat and reduce its lifespan.

[0003] To improve heat transfer efficiency, armored electric heaters are fixed to the heating end face by welding, which can effectively increase the heat transfer area. However, if the armored electric heater fails, it needs to be replaced along with the heated parts, resulting in poor maintainability and increased replacement costs. Utility Model Content

[0004] The purpose of this invention is to provide a detachable electric heating device with high heat transfer efficiency and good maintainability.

[0005] The technical solution of this utility model is: an easily detachable annular electric heating device, which includes an armored electric heater and a heat-conducting ring, both of which are annular and welded together in the thickness direction; the annular part of the armored electric heater has a notch, and the two ends of the notch are connected to the wires; the annular end face of the heat-conducting ring in the axial direction is the mounting surface, and it is fixed to the product by high-temperature resistant thermally conductive adhesive.

[0006] Advantageously, the armored electric heater and the heat-conducting ring have the same inner and outer diameters.

[0007] Advantageously, the opposing surfaces of the electric heater and the heat-conducting ring have a mating shape.

[0008] Advantageously, the cross-section of the armored electric heater is circular or elliptical, and the heat-conducting ring has an annular groove for accommodating the armored electric heater.

[0009] Advantageously, the mounting surface needs to meet a certain flatness requirement.

[0010] Advantageously, the shape of the armored electric heater and the heat-conducting ring can be adjusted according to installation requirements.

[0011] The advantages of this utility model are: the contact between the electric heating device and the annular heating area is a surface contact, and the gap between the two is filled with high-temperature resistant thermally conductive adhesive, which improves the heating uniformity and heat transfer efficiency, facilitates the disassembly of the electric heating device for other reasons, and has good maintainability. Attached Figure Description

[0012] Figure 1It is a structural diagram of the utility model;

[0013] Figure 2 yes Figure 1 AA sectional view.

[0014] 1-Sheathed electric heater, 2-Heat-conducting ring, 21-Ring groove, 22-Mounting surface DETAILED DESCRIPTION

[0015] The present invention will now be described in further detail.

[0016] like Figure 1 The illustrated easily detachable annular electric heating device mainly consists of an armored electric heater 1 and a heat-conducting ring 2. The armored electric heater 1 and the heat-conducting ring 2 are welded together by high-temperature resistant solder to ensure a reliable connection. The surface of the heat-conducting ring 2 that is welded to the armored electric heater 1 has an annular groove 21 that matches the armored electric heater 1, ensuring that the two fit together fully during the welding process.

[0017] The mounting surface 22 at the other end of the heat-conducting ring 2 has a high degree of flatness. During installation, high-temperature resistant thermally conductive adhesive is applied to the mounting surface 22 to ensure complete contact with the mounting surface of the electric heating device, thereby improving heat transfer efficiency. This connection method improves heating uniformity and heat transfer efficiency, and facilitates the subsequent disassembly of the electric heating device for other reasons, thus providing good maintainability.

Claims

1. A detachable annular electric heating device, characterized in that: The device includes an armored electric heater (1) and a heat-conducting ring (2), both of which are annular and welded together in the thickness direction; the annular part of the armored electric heater (1) has a notch, and the two ends of the notch are connected to the wires; the annular end face of the heat-conducting ring (2) in the axial direction is the mounting surface (22), which is fixed to the product by high-temperature heat-conducting adhesive.

2. The easily detachable annular electric heating device according to claim 1, characterized in that: The armored electric heater (1) and the heat-conducting ring (2) have the same inner and outer diameters.

3. The easily detachable annular electric heating device according to claim 1, characterized in that: The surfaces of the electric heater (1) and the heat-conducting ring (2) opposite each other have a mating shape.

4. The easily detachable annular electric heating device according to claim 3, characterized in that: The cross-section of the armored electric heater (1) is circular or elliptical, and the heat-conducting ring (2) has an annular groove (21) for accommodating the armored electric heater (1).

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