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Heat exchange tube

A heat exchange tube and tube wall technology, which is applied in the field of heat exchange tubes, can solve the problems of incapable of efficient heat exchange, low heat exchange efficiency, and limited compressive strength.

Inactive Publication Date: 2009-06-17
苏州吉来冷冻空调设备配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its heat transfer efficiency is still not high
Substances with low heat transfer coefficients, such as Freon, cannot perform efficient heat transfer
In addition, although the compressive strength of the spiral heat exchange tube is higher than that of the straight tube, its compressive strength is still limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] Referring to the heat exchange tubes shown in Figures 1 and 2, the two ends are straight tubes 1, and the middle is a spiral tube 2. The tube wall of the helical tube is a tube wall with three helical lines 3 .

[0011] The three helixes 3 are evenly distributed on the same cross section. There are threads (not shown) on the inner surface of the heat exchange tube, and the direction of the thread is opposite to the helical direction of the tube wall (for example, the thread is left-handed, and the helix is ​​right-handed). The outer diameter of the straight tube is smaller than the outer diameter of the helical tube wall. There are 50-70 threads (such as 60 threads) on the same cross section of the spiral pipe, and the depth is 0.13-0.20mm (such as 0.16mm).

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Abstract

The invention provides a heat exchange pipe with high heat exchange efficiency, high compressive strength and good anti-freezing performance. The heat exchange pipe comprises a spiral pipe wall. The inner surface of the spiral pipe wall is provided with a thread, and the direction of the thread is opposite to the spiral direction of the pipe wall. As the direction of the thread is opposite to the spiral direction of the pipe wall, the flow direction and the flow speed of a cooled medium are changed when the cooled medium flows in the heat exchange pipe, radial mixing of fluid is increased, a heat exchange boundary layer is damaged, heat transferring is enhanced, use rate of a heat exchange area is greatly increased, and heat exchange efficiency is improved; meanwhile, the cooled medium is not easily frozen, so the anti-freezing performance is improved; and the structure also improves the compressive strength.

Description

technical field [0001] The invention relates to a heat exchange tube. Background technique [0002] The heat exchange tube is the main part of the heat exchanger. The cooled medium flows in the heat exchange tube, and the cooling medium flows outside the heat exchange tube to realize heat exchange between the cooling medium and the cooled medium. In the existing heat exchange tubes, in order to increase the heat exchange area, generally spiral tube walls are used. But its heat transfer efficiency is still not high. Substances with low heat transfer coefficients, such as Freon, cannot perform efficient heat transfer. In addition, although the spiral heat exchange tube has higher compressive strength than the straight tube heat exchange tube, its compressive strength is still limited. Contents of the invention [0003] The purpose of the present invention is to provide a heat exchange tube with high heat exchange efficiency, high compressive strength and good anti-freezi...

Claims

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Application Information

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IPC IPC(8): F28F1/34
Inventor 陈辉
Owner 苏州吉来冷冻空调设备配件有限公司
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