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A composite tooth-shaped high-efficiency heat transfer copper tube

A technology of composite teeth and copper tubes, which is applied to tubular components, heat exchange equipment, lighting and heating equipment, etc., can solve the problems of low heat exchange rate of refrigerant and increased flow resistance of refrigerant, so as to reduce circulation resistance and improve heat dissipation. Exchange rate, effect of increasing heat transfer surface area

Active Publication Date: 2016-10-05
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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  • A composite tooth-shaped high-efficiency heat transfer copper tube
  • A composite tooth-shaped high-efficiency heat transfer copper tube
  • A composite tooth-shaped high-efficiency heat transfer copper tube

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1: as figure 1 The composite tooth-type high-efficiency heat transfer copper tube shown includes a copper tube body 1, and the inner wall of the copper tube body is provided with four sets of spirally distributed tooth ribs along the circumferential direction, respectively tooth rib A2, tooth rib B3, tooth rib 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 It has a rectangular structure, the cross-sections of rib B and rib b are triangular, the ratio of the tooth width of tooth rib A to the tooth width of rib a is 1:2.2, the tooth tip angle of tooth rib B and the tooth top of tooth rib b The angle ratio is 1:1.5, the tooth top angles of tooth rib B and tooth rib b are rounded, and the angle β between tooth rib A, tooth rib B, tooth rib a, tooth rib b and the axis of the copper pipe ...

Embodiment 2

[0026] Embodiment 2: as figure 2A combined tooth-shaped internally threaded copper pipe is shown, which includes a copper pipe body 1. The inner wall of the copper pipe body is sequentially provided with four groups of spirally distributed tooth ribs along the circumferential direction, which are 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 sections of tooth rib A and tooth rib a are as follows: Rectangular structure, the cross section of rib B and rib b is triangular, the ratio of the tooth width of rib A to the tooth width of rib a is 1:1.2, the tip angle of rib B and the tip angle of rib b The ratio is 1:2, the tooth top angles of tooth rib B and tooth rib b are rounded, the tooth top angles of tooth rib B and tooth rib b are rounded, tooth rib A, tooth rib B, tooth rib a, tooth rib The angle β between th...

Embodiment 3

[0027] Embodiment 3: as Figure 4 A combined tooth-shaped internally threaded copper pipe is shown, which includes a copper pipe body 1. The inner wall of the copper pipe body is sequentially provided with four groups of spirally distributed tooth ribs along the circumferential direction, which are 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 sections of tooth rib A and tooth rib a are as follows: Rectangular structure, the cross section of rib B and rib b is triangular, the ratio of the tooth width of rib A to the tooth width of rib a is 1:1.2, the tip angle of rib B and the tip angle of rib b The ratio is 1:1.8, the top angles of tooth rib B and tooth rib b are rounded, and the angle β between tooth rib A, tooth rib B, tooth rib a, tooth rib b and the axis of the copper pipe body is 25°; The tooth top heigh...

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Abstract

The invention relates to the technical field of heat transfer tubes and discloses a compound tooth-shaped efficient heat transfer copper tube. The heat transfer copper tube comprises a copper tube body, wherein four groups of spirally-distributed tooth ribs are sequentially arranged on the inner wall of the copper tube body along the circumferential direction; the cambered surfaces of tooth ribs A, tooth ribs B, tooth ribs a and tooth ribs b occupy a 90-degree central angle respectively in any section of the copper tube body; the cross sections of the tooth ribs A and the tooth ribs a are rectangular structures; the cross sections of the tooth ribs B and the tooth ribs b are triangular; the ratio of the tooth width of the tooth ribs A to the tooth width of the tooth ribs a is (1 to 1.2) to (1 to 2.2); the ratio of the tooth top angle of the tooth ribs B to the tooth top angle of the tooth ribs b is (1 to 1.5) to (1 to 2). Consequently, the heat transfer copper tube has the beneficial effects that the refrigerant flow resistance can be effectively reduced, and the heat exchange rate between refrigerants of different parts in the copper tube body is increased.

Description

technical field [0001] The invention relates to the technical field of heat-transfer copper tubes, in particular to a compound-tooth-type high-efficiency heat-transfer 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...

Claims

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Application Information

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