Heating wire with wrapping structure

Abstract

The utility model discloses a heating wire with a wrapping structure, and relates to the technical field of heating wires. The heating device comprises a heating piece, the heating piece comprises a heating area, a bending area and connecting areas, the heating area is in a locally-disconnected ring shape, the connecting areas are arranged at the disconnected positions respectively, the bending area is connected between the heating area and the connecting areas, electrode legs are arranged on the outer wall sides of the connecting areas, and the electrode legs are connected with the heating area. A fixing plate is arranged on the inner wall side, opposite to the electrode legs, of the connecting area, through holes are formed in the surfaces of the electrode legs, the connecting area and the fixing plate respectively, and the electrode legs, the connecting area and the fixing plate are fixed through fixing bolts. The electrode cover plate structure is optimized, the arc wrap angles are increased, the contact area is increased, the contact surface temperature is reduced, and the service life of the heating wire is prolonged by more than one time.

Description

Technical Field

[0001] The utility model relates to the technical field of heating wires, in particular to a heating wire with a wrapping structure. Background Art

[0002] The Metal Organic Chemical Vapor Deposition (MOCVD) machine requires a long period of high temperature conditions of 800-1200°C during the growth process. In continuous production, the heating hardware part has high requirements and the machine needs to maintain high stability. Due to long-term use, the support and heating performance of the inner ring heating wire at the connection are attenuated to a certain extent, and the support needs to be increased to reduce the deformation.

[0003] Existing technical solutions:

[0004] 1. High temperature is easily generated at the contact point of molybdenum and rhenium materials, causing the heating wire to melt.

[0005] 2. The contact points of the heating wire are not sufficiently supported. Under high temperature conditions, it is easy to deform due to insufficient support, affecting the current output and normal heating.

[0006] 3. The service life is short, generally 4-6 months. If it exceeds 6 months, the risk of fuse blowing is high.

[0007] For this purpose, a heating wire with a wrapping structure is proposed. Utility Model Content

[0008] The purpose of the utility model is to solve the problem of relatively short service life of traditional heating wires, and the utility model provides a heating wire with a wrapping structure.

[0009] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0010] A heating wire with a wrapped structure comprises a heating element, wherein the heating element comprises a heating zone, a bending zone and a connecting zone, the heating zone is a partially broken ring and the connecting zone is respectively arranged at the broken part, the bending zone is connected between the heating zone and the connecting zone, an electrode leg is arranged on the outer wall side of the connecting zone, a fixing plate is arranged on the inner wall side of the connecting zone relative to the electrode leg, the outer side surface of the fixing plate is an arc shape matching the bending zone, the electrode leg, the connecting zone and the fixing plate surface are respectively provided with through holes and are fixed by fixing bolts.

[0011] Furthermore, an extension portion is provided at the connection zone near the inner wall end of the heating zone, and the extension portion wraps the outer wall of the bending zone.

[0012] Furthermore, the cross section of the heating zone is arc-shaped.

[0013] Furthermore, the width of the heating zone is 10-30 mm, and the width of the heating zone is 0.1-0.5 mm.

[0014] The beneficial effects of the utility model are as follows:

[0015] The wrapped inner ring heating wire electrode leg is adopted, and the thermal stress of the heating wire at the electrode leg is smaller, and it is not easy to wrinkle, deform, or fuse. The service life of the heating wire is significantly improved, and the replacement cycle is extended by more than 1 times. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 yes Figure 1 Exploded diagram of

[0018] Figure 3 It is a structural schematic diagram of a fixed plate of the utility model.

[0019] Figure numerals: 1. heating element; 2. electrode leg; 3. fixing plate; 4. fixing bolt; 5. connecting area; 6. extension part; 7. bending area; 8. heating area. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] like Figure 1-3 As shown, a heating wire with a wrapped structure includes a heating element 1, and the heating element 1 includes a heating zone 8, a bending zone 7 and a connecting zone 5. The heating zone 8 is a partially broken ring and the broken part is respectively provided with a connecting zone 5, the bending zone 7 is connected between the heating zone 8 and the connecting zone 5, and the outer wall side of the connecting zone 5 is provided with an electrode leg 2, and the inner wall side of the connecting zone 5 opposite to the electrode leg 2 is provided with a fixing plate 3, and the outer side surface of the fixing plate 3 is an arc shape matching the bending zone 7, and the surfaces of the electrode leg 2, the connecting zone 5 and the fixing plate 3 are respectively provided with through holes and are fixed by fixing bolts 4.

[0025] In this embodiment, at the same working temperature, the maximum stress of the heating wire is significantly reduced before and after the improvement, and the position where the temperature gradient changes greatly is transferred from the arc bending zone to the heating zone 8 of the heating wire, which can effectively avoid the material damage at the arc bending zone and the superposition of stress caused by the temperature gradient.

[0026] Specifically, an extension portion 6 is provided at the inner wall end of the connection zone 5 close to the heating zone 8 , and the extension portion 6 wraps the outer wall of the bending zone 7 .

[0027] In this embodiment, by optimizing the structure of the fixing plate 3 and increasing the arc wrap angle, the contact area is increased and the contact surface temperature is reduced, thereby extending the service life of the heating wire by more than 1 times.

[0028] In summary: the inner side of the electrode leg 2 forms a smooth arc surface when bent, which can achieve better fit when in contact with the bending area 7 of the heating wire, and can achieve better conduction when heated by a large current;

[0029] The outer arc surface of the electrode leg 2 is wrapped with screws to better fix the heating wire and better support the downward rigidity of the heating wire.

[0030] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heating wire with a wrapping structure, characterized in that: The invention comprises a heating element (1), wherein the heating element (1) comprises a heating zone (8), a bending zone (7) and a connecting zone (5); the heating zone (8) is partially disconnected in an annular shape and the connecting zone (5) is respectively arranged at the disconnected part; the bending zone (7) is connected between the heating zone (8) and the connecting zone (5); an electrode leg (2) is arranged on the outer wall side of the connecting zone (5); a fixing plate (3) is arranged on the inner wall side of the connecting zone (5) opposite to the electrode leg (2); the outer side surface of the fixing plate (3) is in an arc shape matching the bending zone (7); the surfaces of the electrode leg (2), the connecting zone (5) and the fixing plate (3) are respectively provided with through holes and are fixed by fixing bolts (4).

2. The heating wire with a wrapped structure according to claim 1, characterized in that: The connection zone (5) is provided with an extension portion (6) near the inner wall end of the heating zone (8), and the extension portion (6) wraps the outer wall of the bending zone (7).

3. The heating wire with a wrapped structure according to claim 1, characterized in that: The heating zone (8) has an arc-shaped cross section.

4. The heating wire with a wrapped structure according to claim 1, characterized in that: The width of the heating zone (8) is 10-30 mm, and the width of the heating zone (8) is 0.1-0.5 mm.

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