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Efficient heat exchange tube for evaporator

A technology of heat exchange tubes and evaporators, which is applied in the field of high-efficiency heat exchange tubes, can solve the problem that the enhanced heat transfer effect cannot achieve satisfactory results, and achieve excellent enhanced heat transfer effects, enhanced evaporation heat transfer process, and improved heat transfer. The effect of thermal effects

Inactive Publication Date: 2014-05-14
JIANGSU CUILONG PRECISION COPPER TUBE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned patents and patent application schemes only process grooves on the outer fins and form a tooth platform structure. This structure has a significant heat transfer effect when flooded with evaporation, but when used in a falling film evaporator, the enhanced heat transfer effect does not achieve satisfactory results

Method used

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  • Efficient heat exchange tube for evaporator
  • Efficient heat exchange tube for evaporator
  • Efficient heat exchange tube for evaporator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] See Figure 1 to Figure 3 , given the pipe body 1, the material on the pipe body 1 extends along the radial direction of the pipe body 1 and extends in a spiral state around the pipe body 1 on the outer surface of the pipe body 1 (from one end of the length direction of the pipe body 1 Helical fins 2 formed integrally with the tube body 1 and extending to the other end in a helical state, wherein: the space between adjacent helical fins 2 constitutes fin grooves 3, and the fin grooves 3 Also known as fin spacing grooves. Inner fins 5 are formed on the inner wall of the tube body 1, and a helix angle of 15-60° is formed between the inner fins 5 and the axial centerline of the tube body 1 (the helix angle in this embodiment is 43°).

[0023] As the technical gist of the technical solution provided by the present invention: It also includes finned circumferential grooves 4 spaced apart along the circumferential direction of the tube body 1, through the cooperation of the ...

Embodiment 2

[0031] Only change the height of the spiral fin 2 to 1.5mm, the height of the prism body 212 to 0.4mm, the depth of the enhanced heat transfer hole 41 to 0.06mm, and the depth of the fin circumferential groove 4 to 0.5mm, Change the diameter of the hole opening and the hole bottom diameter of the enhanced heat transfer hole 41 to 0.05mm and 0.15mm respectively, and the rest are the same as the description of Embodiment 1.

Embodiment 3

[0033] Only change the height of the spiral fin 2 to 0.5mm, the height of the truss body 212 to 0.1mm, the depth of the enhanced heat transfer hole 41 to 0.02mm, and the depth of the fin circumferential groove 4 to 0.1mm, The diameter of the hole opening and the hole bottom diameter of the enhanced heat transfer hole 41 are changed to 0.07mm and 0.27mm respectively, and the rest are the same as the description of Embodiment 1.

[0034] It can be known from the foregoing embodiments 1 to 3 that the longitudinal cross-sectional shape of the enhanced heat transfer hole 41 is a trapezoid with a small top and a large bottom.

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Abstract

The invention discloses an efficient heat exchange tube for an evaporator, and belongs to the technical field of evaporation heat exchange tubes in refrigerating systems of air conditioners. The efficient heat exchange tube comprises a tube body and spiral fins, wherein the spiral fins are formed by extending materials on the tube body in the radius direction of the tube body and stretching the materials around the tube body and on the outer surface of the tube body in a spiral state and are integrated with the tube body, and fin grooves are formed in space between every two adjacent spiral fins. The efficient heat exchange tube is characterized by further comprising fin circumferential grooves which are formed at intervals in the circumference direction of the tube body, and the spiral fins form independent evaporation heat exchange surface extending units through the fin grooves and the fin circumferential grooves. The evaporation heat exchange surface outside the tube body is obviously increased, the heat transfer effect can be improved, the evaporation heat exchange process is enhanced, surface tension of fluid can be destroyed, a liquid film on the outer surface of the tube body is effectively extended, and the goal of enhancing the falling film evaporation heat transfer process is achieved. Through enhanced heat transfer holes formed in the fin circumferential grooves, the excellent enhanced heat transfer function can be further shown.

Description

technical field [0001] The invention belongs to the technical field of evaporative heat exchange tubes in air-conditioning and refrigeration systems, and in particular relates to a high-efficiency heat exchange tube for evaporators, which is suitable for strengthening evaporative heat exchange outside the tube to reflect energy saving. Background technique [0002] The structure of the heat exchange tube used in the evaporator in the prior art is: after machining, on the outer wall of the tube body, it is formed in a spiral state along the length direction of the tube body, protruding from the surface of the tube body and integrally formed with the tube body. The helical fins are formed on the helical fins, and a tooth platform is formed on the helical fins, and an inverted cavity extending along the circumferential direction of the pipe body is formed between two adjacent helical fins. This heat exchange tube structure helps to trap small air bubbles, making the air bubbles...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/42F28F13/02F25B39/02
Inventor 周浩平张国锋景晓伟金莉雯吴继程
Owner JIANGSU CUILONG PRECISION COPPER TUBE CORP