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Combined tooth type heat exchange copper tube

A copper tube and tooth-shaped technology, which is applied in the field of heat transfer tubes, can solve the problems of low refrigerant heat exchange rate and increased refrigerant flow resistance, and achieve the effects of increasing surface area, reducing flow resistance, and increasing heat exchange rate

Active Publication Date: 2015-05-27
JIANGXI NAILE COPPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems in the prior art that the thread on the inner wall of the copper tube causes the increase of the flow resistance of the refrigerant and the low heat exchange rate of the refrigerant in different parts of the heat transfer tube, the invention provides a method that can effectively reduce the flow resistance of the refrigerant and strengthen the copper tube body. The internal turbulence and turbulence effect can improve the heat exchange rate inside and outside the copper tube body, and the combined tooth-shaped internal thread copper tube

Method used

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  • Combined tooth type heat exchange copper tube
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  • Combined tooth type heat exchange copper tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: as figure 1 The shown combined toothed heat exchange copper tube includes a copper tube body 1, and the inner wall of the copper tube body is provided with four groups of spirally distributed tooth ribs along the circumferential direction, respectively tooth rib A2, tooth rib B3, tooth rib a4, tooth rib b5, on any section of the copper pipe body, the arc surfaces of tooth rib A, tooth rib B, tooth rib a, and tooth rib b each occupy a central angle of 90°, and the cross sections of tooth rib A and tooth rib a are rectangular structure, the cross-sections of tooth rib B and tooth rib b are triangular, the top angles of tooth rib B and tooth rib b are rounded, and the tops of tooth rib A and tooth rib a are also provided with holes distributed along tooth rib A and tooth rib a. In the V-shaped groove 20, the included angle β between the tooth rib A, the tooth rib B, the tooth rib a, and the tooth rib b and the axis of the copper pipe body is 25°.

Embodiment 2

[0027] Embodiment 2: as figure 2 The shown combined toothed heat exchange copper tube includes a copper tube body 1, and the inner wall of the copper tube body is provided with four groups of spirally distributed tooth ribs along the circumferential direction, respectively tooth rib A2, tooth rib B3, tooth rib a4, tooth rib b5, on any section of the copper pipe body, the arc surfaces of tooth rib A, tooth rib B, tooth rib a, and tooth rib b each occupy a central angle of 90°, and the top angles of tooth rib B and tooth rib b are Rounded corners, the tops of tooth rib A and tooth rib a are also provided with V-shaped grooves distributed along tooth rib A and tooth rib a, tooth rib A, tooth rib B, tooth rib a, tooth rib b and the axis of the copper pipe body The included angle β is 25°; the tooth top heights of tooth rib A, tooth rib B, tooth rib a, and tooth rib b respectively decrease from the first to the last along the same circumferential direction, and tooth rib A, tooth ...

Embodiment 3

[0028] Embodiment 3: as Figure 4The shown combined toothed heat exchange copper tube includes a copper tube body 1, and the inner wall of the copper tube body is provided with four groups of spirally distributed tooth ribs along the circumferential direction, respectively tooth rib A2, tooth rib B3, tooth rib a4, tooth rib b5, on any section of the copper pipe body, the arc surfaces of tooth rib A, tooth rib B, tooth rib a, and tooth rib b each occupy a central angle of 90°, and the cross sections of tooth rib A and tooth rib a are rectangular structure, the cross-sections of tooth rib B and tooth rib b are triangular, the top angles of tooth rib B and tooth rib b are rounded, and the tops of tooth rib A and tooth rib a are also provided with holes distributed along tooth rib A and tooth rib a. V-shaped groove, the angle β between tooth rib A, tooth rib B, tooth rib a, tooth rib b and the axis of the copper tube body is 25°; tooth tops of tooth rib A, tooth rib B, tooth rib a...

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Abstract

The invention relates to the technical field of heat transferring tubes and discloses a combined tooth type heat exchange copper tube. The combined tooth type heat exchange copper tube comprises a copper tube body, wherein four groups of tooth ribs respectively including tooth ribs A, tooth ribs B, tooth ribs a and tooth ribs b which are spirally distributed are arranged on the inner wall of the copper tube body in sequence along a circumferential direction, the cambered surfaces on which the tooth ribs A, the tooth ribs B, the tooth ribs a and the tooth ribs b are positioned respectively occupy 90 degrees of central angle on any cross section of the copper tube body, the cross section of each tooth rib A and each tooth rib a is rectangular, the cross section of each tooth rib B and each tooth rib b is triangular, the vertex angles of the tooth ribs B and the tooth ribs b are round, and V-shaped grooves which are distributed along the tooth ribs A and the tooth ribs a are formed in the tops of the tooth ribs A and the tooth ribs a. Therefore, the combined tooth type heat exchange copper tube has the beneficial effects that the refrigerant flow resistance can be effectively reduced, and the heat exchange rate among refrigerants in different positions in the copper tube body can be increased.

Description

technical field [0001] The invention relates to the technical field of heat transfer tubes, in particular to a combined serrated heat exchange copper tube. Background technique [0002] The condenser and evaporator in the air conditioner are made of internally threaded copper tube coils. In the field of heat transfer tube technology, the upgrade from light tubes to internally threaded copper tubes is a major technological innovation, which greatly improves the cooling performance of air conditioners. , heating performance, the current internally threaded copper pipes are generally a single spiral groove or helical teeth, and there are also many documents or patents that disclose helical teeth with different cross-sectional shapes, such as M-shaped, Y-shaped, trapezoidal, semicircular Tooth, various tooth shapes are nothing more than to increase the heat transfer surface area, but for internally threaded copper pipes, only changing the cross-sectional shape of the tooth does ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/40F25B39/00
Inventor 刘晋龙罗奇梁梁子浩
Owner JIANGXI NAILE COPPER IND