U-shaped heating wire radiation tube with high heat dissipation and stable heat field

Abstract

The utility model discloses a kind of U-shaped heating wire radiation tubes achieving efficient heat dissipation and thermal field stability, including pipe body and pipe wall, U-shaped heating wire being arranged in the pipe wall and the insulating connecting piece for fixing the U-shaped heating wire, the U-shaped heating wire is provided with multiple, multiple U-shaped heating wire is arranged in ring array and is connected together, and spiral heating wire is respectively wound in series on multiple U-shaped heating wire, and spiral air duct is formed between the adjacent wire body of the spiral heating wire.This application is arranged in ring array by multiple U-shaped heating wire in parallel, realizes the compact layout of thermal field, and reduces single current density and surface load;By winding spiral heating wire on U-shaped heating wire, contact area and thermal radiation uniformity can be increased, heat transfer efficiency is improved, and the service life of heating wire caused by local overheating is avoided;The spiral heating wire of square section can further increase contact area, improve heat transfer efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of electric heating, specifically a U-shaped heating wire radiant tube that achieves efficient heat dissipation and stable thermal field. Background Technology

[0002] In existing radiant tube heating structures, straight or simple spiral circular heating wires are commonly used. The advantage of this traditional design is its simplicity and low design and production costs, but it also has several disadvantages. A single U-shaped structure makes it difficult to achieve a compact layout; multiple U-shaped bases connected in parallel are prone to electromagnetic interference; the small contact area between the circular heating wire and the radiant tube wall results in low heat transfer efficiency; and the traditional design is prone to localized overheating, shortening its service life. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide a U-shaped heating wire radiant tube that achieves efficient heat dissipation and stable thermal field.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a U-shaped heating wire radiant tube that achieves efficient heat dissipation and stable thermal field, including a tube body and a tube wall, a U-shaped heating wire disposed in the tube wall and an insulating connector for fixing the U-shaped heating wire, wherein multiple U-shaped heating wires are provided, the multiple U-shaped heating wires are arranged in a ring array and connected in parallel, and a spiral heating wire is wound in series on each of the multiple U-shaped heating wires, and a spiral air channel is formed between adjacent wires of the spiral heating wires.

[0005] Preferably, the cross-section of the spiral heating wire is square.

[0006] Preferably, the outer surface of the U-shaped heating wire is formed with grooves in a spiral shape that match the spiral heating wire.

[0007] Preferably, the U-shaped heating wire and the spiral heating wire are fixed by laser welding.

[0008] Preferably, an alumina ceramic insulation layer is provided between the tube wall and the U-shaped heating wire.

[0009] The main technical effects of this utility model are reflected in the following aspects: (1) By arranging multiple U-shaped heating wires in a parallel ring array, a compact layout of the thermal field is achieved, and the current density and surface load of a single wire are reduced; (2) By winding a spiral heating wire on the U-shaped heating wire, the contact area and heat radiation uniformity can be increased, the heat transfer efficiency can be improved, and the life of the heating wire can be reduced due to local overheating; (3) The spiral heating wire with a square cross section can further increase the contact area and improve the heat transfer efficiency. Attached Figure Description

[0010] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a schematic diagram of part of the structure of this utility model;

[0012] Figure 3 This utility model Figure 2 Enlarged schematic diagram of part A;

[0013] Figure 4 This is a partial structural diagram of the U-shaped heating wire and spiral heating wire of this utility model;

[0014] Figure 5 This is a top view of part of the structure of this utility model.

[0015] 1-Pipe body; 2-Pipe wall; 3-U-shaped heating wire; 4-Insulating connector; 5-Spiral heating wire; 6-Spiral air duct. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered. Example

[0017] according to Figure 1-5 As shown, a U-shaped heating wire radiant tube for achieving efficient heat dissipation and thermal field stability includes a tube body 1 and a tube wall 2, a U-shaped heating wire 3 disposed within the tube wall 2, and an insulating connector 4 for fixing the U-shaped heating wire 3. Multiple U-shaped heating wires 3 are arranged in a ring array and connected in parallel, reducing the current density and surface load of a single U-shaped heating wire 3, minimizing electromagnetic interference between multiple U-shaped heating wires 3, and enabling a compact layout. Spiral heating wires 5 are wound in series on each of the multiple U-shaped heating wires 3, with each U-shaped heating wire 3 connected in series with a single spiral heating wire 5. The spiral heating wires 5 increase the contact area and heat radiation uniformity, improving heat transfer efficiency. A spiral airflow duct 6 is formed between adjacent wires of the spiral heating wires 5, preventing localized overheating that could reduce the lifespan of the heating wires, thus achieving efficient heat dissipation and thermal field stability.

[0018] The outer surface of the U-shaped heating wire 3 is formed with a groove in a spiral shape that matches the spiral heating wire 5. The spiral heating wire 5 is pre-fixed to the outer surface of the U-shaped heating wire 3 through the groove. The U-shaped heating wire 3 and the spiral heating wire 5 are fixed by laser welding.

[0019] Compared to conventional circular heating wires, the spiral heating wire 5 has a square cross-section, which increases the surface area by about 27% compared to a circular heating wire of the same diameter, effectively improving thermal efficiency.

[0020] An alumina ceramic insulation layer is provided between the tube wall 2 and the U-shaped heating wire 3, which can evenly distribute heat on the tube wall 2.

Claims

1. A U-shaped heating wire radiant tube for achieving efficient heat dissipation and stable thermal field, comprising a tube body and a tube wall, a U-shaped heating wire disposed within the tube wall, and an insulating connector for fixing the U-shaped heating wire, characterized in that: Multiple U-shaped heating wires are provided, and the multiple U-shaped heating wires are arranged in a ring array and connected together. Spiral heating wires are wound in series on the multiple U-shaped heating wires, and a spiral air channel is formed between the adjacent wires of the spiral heating wires.

2. The U-shaped heating wire radiant tube for achieving efficient heat dissipation and thermal field stability according to claim 1, characterized in that: The cross-section of the spiral heating wire is square.

3. A U-shaped heating wire radiant tube for achieving efficient heat dissipation and thermal field stability according to claim 1 or 2, characterized in that: The outer surface of the U-shaped heating wire is formed with grooves in a spiral shape that match the spiral heating wire.

4. The U-shaped heating wire radiant tube for achieving efficient heat dissipation and thermal field stability according to claim 1, characterized in that: The U-shaped heating wire and the spiral heating wire are fixed together by laser welding.

5. A U-shaped heating wire radiant tube for achieving efficient heat dissipation and thermal field stability according to claim 1, characterized in that: An alumina ceramic insulation layer is provided between the tube wall and the U-shaped heating wire.

Images