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CN-224215927-U - Microstructure high-fin heat exchange tube

CN224215927UCN 224215927 UCN224215927 UCN 224215927UCN-224215927-U

Abstract

The utility model relates to a microstructure high-fin heat exchange tube, which relates to the technical field of heat exchange components, and improves the heat exchange effect while increasing the heat exchange area. The outer fin comprises a tube body and outer fins which are formed by extending materials on the tube body along the radial direction of the tube body and extending in a spiral state around the tube body on the outer surface of the tube body and integrally formed with the tube, wherein the outer fins are narrow in upper part and wide in lower part, fin-to-fin channels are formed between adjacent outer fins, at least one side channel is formed on two sides of each outer fin, the extending direction of each side channel is consistent with that of each outer fin, and the side channels on two sides of each outer fin are staggered. The heat exchange efficiency is greatly improved through the refinement of the geometric parameters of the fins and the refinement of the manufacturing process.

Inventors

  • JIN LIWEN
  • ZHANG CHUNMING
  • Bao jiafeng
  • XU QIUPING
  • HUANG YU

Assignees

  • 江苏萃隆精密铜管股份有限公司

Dates

Publication Date
20260508
Application Date
20250421

Claims (8)

  1. 1. The microstructure high-fin heat exchange tube comprises a tube body (1) and outer fins (2) which are formed by extending materials on the tube body (1) along the radial direction of the tube body (1) and spirally extending the outer surface of the tube body (1) around the tube body (1) and are integrally formed with the tube body (1), and is characterized in that the upper part of each outer fin (2) is narrow and the lower part of each outer fin is wide, an inter-fin channel (3) is formed between every two adjacent outer fins (2), at least one side channel (20) is formed on two sides of each outer fin (2), the extending direction of each side channel (20) is consistent with the spirally extending direction of each outer fin (2), and the side channels (20) on two sides of each outer fin (2) are staggered.
  2. 2. The microstructured high fin heat exchange tube according to claim 1, wherein the width of the outer fin (2) is 0.4 to 1.0mm and the height of the outer fin (2) is 5 to 15mm.
  3. 3. The microstructured high-fin heat exchange tube according to claim 2, characterized in that the arrangement density of the outer fins (2) along the axial direction of the tube body (1) is 3 to 4 teeth/cm.
  4. 4. A microstructured high fin heat exchange tube according to claim 2, wherein the external fins (2) have a helix angle of 80-89 °.
  5. 5. A microstructured high fin heat exchange tube according to claim 1, wherein the width of the inter-fin channels (3) is 1.5 to 2.9mm.
  6. 6. A microstructured high fin heat exchange tube according to claim 1, wherein the side channels (20) have a depth of 0.1 to 0.2mm, the side channels (20) having a width of 1 to 3mm.
  7. 7. A microstructured high fin heat exchange tube according to claim 6, wherein the side channels (20) have a rectangular, V-shaped or U-shaped cross-sectional shape.
  8. 8. A microstructured high fin heat exchange tube according to claim 6, wherein the spacing between the side channels (20) is 2-5 mm.

Description

Microstructure high-fin heat exchange tube Technical Field The utility model relates to the technical field of heat exchange components, in particular to a microstructure high-fin heat exchange tube. Background The copper and copper alloy high-fin tube is mainly applied to the field of gas-gas, gas-liquid and liquid-liquid heat exchange, and is a high-performance energy-saving product. The application of the copper and copper alloy high-fin tube is mainly transferred from the aerospace industry and the military industry to the industries of petroleum, chemical industry, heating ventilation, power, ocean engineering and the like, and is expanded to civil products from industrial application. The advanced level of high finned tubes is directly related to the operational performance of the equipment and devices, and plays a vital role in energy conservation. In the research and development directions of fin tube products in developed countries, the development of the fin tube products is focused on the directions of high fins, thin fins, high density, fin shapes and the like, and the structures are beneficial to enlarging the heat exchange area, improving the heat exchange efficiency and achieving the effects of high efficiency and energy conservation. The shape of the outer fins of the high-fin heat exchange tube is changed to effectively increase the heat exchange area, so that the arrangement direction of the fins is consistent with the propagation direction of a heat source, the heat exchange performance is improved, and the purposes of saving materials, saving energy and protecting environment are achieved. The copper and copper alloy high-fin tube is widely applied to hot water boilers at present, and the high-fin tube is used as a heat exchange element, so that the heat exchange efficiency of the boiler is improved, and the high-fin tube is an energy-saving and environment-friendly product. In a given space range, in order to improve the heat exchange effect of the boiler, the most direct and effective method is to increase the heat exchange area by increasing the number of outer fins of the inner high-fin heat exchange tube in unit length or increasing the height of the outer fins, so that the heat exchange effect is enhanced. Disclosure of utility model The utility model aims to provide a microstructure high-fin heat exchange tube, which increases the heat exchange area and improves the heat exchange effect. In order to achieve the above purpose, the utility model adopts the following technical scheme: The utility model provides a microstructure high-fin heat exchange tube, which comprises a tube body and outer fins which are formed by extending materials on the tube body along the radial direction of the tube body and spirally extending around the tube body on the outer surface of the tube body and integrally formed with the tube, wherein the outer fins are narrow in upper part and wide in lower part, an inter-fin channel is formed between adjacent outer fins, at least one side channel is formed on two sides of each outer fin, the extending direction of each side channel is consistent with the spiral extending direction of each outer fin, and the side channels on two sides of each outer fin are mutually staggered. Further, the width of the outer fin is 0.4-1.0 mm, and the height of the outer fin is 5-15 mm. Further, the arrangement density of the outer fins along the axial direction of the tube body is 3-4 teeth/cm. Further, the lead angle of the outer fin is 80-89 degrees. Further, the width of the inter-fin channel is 1.5-2.9 mm. Further, the depth of the side channel is 0.1-0.2 mm, and the width of the side channel is 1-3 mm. Further, the cross-sectional shape of the side channel is rectangular, V-shaped or U-shaped. Further, the distance between the side channels is 2-5 mm. Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: The microstructure high-fin heat exchange tube has the advantages that the outer fins and the tube body are integrally formed, the contact thermal resistance between the outer fins and the tube body is eliminated, the outer fins are narrow at the upper part and wide at the lower part, the thickness of the conventional outer fins is reduced, the heat exchange area outside the tube is increased, and the heat exchange efficiency is improved. At least one side channel is arranged on two sides of the outer fin, so that the disturbance of air flow can be enhanced, the heat exchange efficiency is further improved, the energy consumption is saved, and meanwhile, the weight of the heat exchange tube can be reduced due to the arrangement of the side channels, and copper materials are saved; Further, the side channels on two sides of the outer fin are staggered from each other and are not at the same height position, so that the influence of the side channel structure on the fin strength is prevented, and the servi