Efficient evaporating pipe

Abstract

The utility model discloses an efficient evaporating pipe which comprises a pipe body, fin assemblies are arranged on the pipe body, and the fin assemblies are spirally distributed in the circumferential direction of the pipe body. Each fin assembly comprises a root part, a middle part and a top part which are continuously arranged, and an included angle alpha between the middle part and the root part is 110-130 degrees; the included angle beta between the top part and the middle part is 55-70 degrees, and under the radial projection, the top part is partially overlapped with the top part of the axially adjacent fin assembly. A cavity structure is formed at the root part and the middle part of the fin assembly, and the grooves are formed in the tube body, so that a vaporization core is formed, and the heat exchange effect is improved. The cross section of the groove is of a V-shaped or semicircular structure, so that bubbles are promoted to be discharged; and meanwhile, the middle part is an inclined surface and can guide discharge. In addition, the upper surface of the middle part is concavely provided with a groove, the lower surface of the middle part is a plane, the middle part and the top form a cavity structure, the cavity structure is matched with the groove formed in the middle part, an auxiliary vaporization core is formed, and the heat exchange effect is further improved.

Description

Technical Field

[0001] The utility model relates to the field of heat exchange tubes, in particular to a high-efficiency evaporation tube. Background Art

[0002] Evaporators are widely used in refrigeration and air conditioning, chemical processing, and food processing. These include dry, flooded, and falling-film evaporators. Flooded and falling-film evaporators are commonly used in large-scale heat exchange equipment due to their high heat exchange efficiency and large heat transfer capacity. In these evaporators, the refrigerant flows outside the evaporating tubes, absorbing heat from the hot water inside. Water remains inside the tubes. To improve evaporator heat transfer efficiency, current methods for enhancing boiling heat transfer in high-efficiency evaporating tubes in the industry primarily involve increasing the heat transfer area by expanding the surface area. However, simply increasing the heat transfer area alone cannot achieve the desired result. Summary of the Invention

[0003] In view of the defects of the above-mentioned prior art, the main purpose of the present invention is to overcome the shortcomings of the prior art and discloses a high-efficiency evaporator tube, which includes a tube body, a fin assembly provided on the tube body, and the fin assembly is spirally distributed along the circumference of the tube body; the fin assembly includes a continuously arranged root, a middle part and a top part, and the angle α between the middle part and the root is 110°-130°; the angle β between the top part and the middle part is 55°-70°, and in radial projection, the top part overlaps with the top part of the fin assembly adjacent to the axial direction.

[0004] Furthermore, a first groove is provided on the tube body, and the first groove is located between adjacent fin assemblies to form a vaporization core.

[0005] Furthermore, the cross section of the first groove is V-shaped or semicircular.

[0006] Furthermore, a second groove is formed on the surface of the middle portion, and the second groove is located below the top portion.

[0007] Furthermore, a plurality of openings are provided on the end surface of the top.

[0008] Furthermore, gaps are provided between the circumferentially adjacent fin assemblies.

[0009] Furthermore, internal teeth are provided on the inner wall of the tube body.

[0010] Beneficial effects achieved by this utility model:

[0011] The utility model forms a cavity structure through the root and middle part of the fin assembly, and arranges grooves on the tube body to form a vaporization core, thereby increasing the heat exchange effect. The cross-section of the groove is a "V"-shaped or semicircular structure, which promotes the discharge of bubbles; at the same time, the middle part is an inclined surface, which can guide the discharge. In addition, the upper surface of the middle part is concave with a groove, and the lower surface is flat. The middle part and the top form a cavity structure, which cooperates with the grooves arranged on the middle part to form an auxiliary vaporization core, further increasing the heat exchange effect. A number of openings are arranged on the end face of the top to increase the contact area with the refrigerant and promote the heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the expanded three-dimensional structure of a high-efficiency evaporation tube of the utility model;

[0013] Figure 2 for Figure 1 A magnified view of middle A;

[0014] Figure 3 for Figure 1 A schematic diagram of a three-dimensional structure from another perspective;

[0015] Figure 4 for Figure 3 A magnified view of middle A;

[0016] The reference numerals are as follows:

[0017] 1. Tube body, 2. Fin assembly, 3. Internal teeth, 11. First groove, 21. Root, 22. Middle part, 23. Top, 221. Second groove, 231. Opening. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] A high efficiency evaporation tube, such as Figure 1-Figure 4 As shown, the fin assembly 2 includes a tube body 1, on which is disposed a fin assembly 2, which is spirally distributed along the circumference of the tube body. The fin assembly 2 includes a continuously arranged root portion 21, a middle portion 22, and a top portion 23. The angle α between the middle portion 22 and the root portion 21 is 110°-130°; the angle β between the top portion 23 and the middle portion 22 is 55°-70°. In radial projection, the top portion 23 partially overlaps with the top portion 23 of the axially adjacent fin assembly 2. The fin assembly 2 of the above structure is processed through multiple extrusions, simplifying the production process. It also increases the contact area with the refrigerant, promotes heat exchange, and thus improves heat exchange efficiency.

[0020] In one embodiment, if Figure 1-Figure 4 As shown, the tube body 1 is provided with a first groove 11, which is located between adjacent fin assemblies 2 to form a vaporization core. The roots 23 and middle portions 22 of adjacent fin assemblies form a cavity structure. The provision of the first groove 11 further increases the contact area between the refrigerant and the evaporation tube. In addition, the first groove 11 forms a vaporization core, promoting the generation and separation of bubbles, further improving heat exchange efficiency.

[0021] In the above embodiment, if Figure 1-Figure 4 As shown, the cross section of the first groove 11 is V-shaped or semicircular. The inclined or smooth sidewall can promote the separation of bubbles and promote heat exchange.

[0022] In one embodiment, if Figure 1-Figure 4 As shown, the surface of the middle portion 22 is provided with a second groove 221, and the second groove 221 is located below the top portion 23. A sub-cavity is formed between the middle portion 22 and the top portion 23 of a fin assembly 2 and another axially adjacent fin assembly 2. The second groove 221 also forms a vaporization core, further promoting the separation of bubbles.

[0023] In one embodiment, if Figure 1-Figure 4 As shown, a plurality of openings 231 are provided on the end surface of the top 23. The provision of the openings 231 increases the contact area with the refrigerant and promotes the bubbles to leave the cavity, further promoting heat exchange.

[0024] In one embodiment, if Figure 1-Figure 4 As shown, gaps are provided between circumferentially adjacent fin assemblies 2 to further increase the contact area of the refrigerant and, at the same time, increase the gaps to promote the discharge of bubbles and thus improve the heat exchange efficiency.

[0025] In one embodiment, if Figure 1-Figure 4 As shown, the inner wall of the tube body 1 is provided with internal teeth 3 .

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Without departing from the spirit and scope of the present invention, modifications or equivalent replacements of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A high-efficiency evaporation tube, characterized in that: The invention comprises a tube body, on which a fin assembly is provided, and the fin assembly is distributed in a spiral shape along the circumference of the tube body; the fin assembly comprises a root portion, a middle portion and a top portion which are continuously arranged, and the angle α between the middle portion and the root portion is 110°-130°; the angle β between the top portion and the middle portion is 55°-70°, and in radial projection, the top portion overlaps with the top portion of the fin assembly adjacent to the axial direction.

2. The high-efficiency evaporation tube according to claim 1, characterized in that: A first groove is provided on the tube body, and the first groove is located between adjacent fin assemblies to form a vaporization core.

3. The high-efficiency evaporation tube according to claim 2, characterized in that: The cross section of the first groove is V-shaped or semicircular.

4. The high-efficiency evaporation tube according to claim 1, characterized in that: A second groove is formed on the surface of the middle portion, and the second groove is located below the top portion.

5. The high-efficiency evaporation tube according to claim 1, characterized in that: The end surface of the top is provided with a plurality of openings.

6. The high-efficiency evaporation tube according to claim 1, characterized in that: Gaps are set between the circumferentially adjacent fin assemblies.

7. The high-efficiency evaporation tube according to claim 1, characterized in that: The inner wall of the tube body is provided with inner teeth.

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