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Combined tooth type inner grooved copper tube

A technology of internal threads and copper tubes, which is applied in the field of heat transfer tubes, can solve the problems of low heat exchange rate of refrigerants and increased flow resistance of refrigerants, and achieve the effects of reducing flow resistance, increasing heat exchange rate, and increasing heat transfer surface area

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 inner grooved copper tube
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  • Combined tooth type inner grooved copper tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: as figure 1 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 tooth rib B and tooth rib b is triangular, 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 b are in line with the axis of the copper tube body The included angle β is 25°.

Embodiment 2

[0027] Embodiment 2: as figure 2 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 tooth rib B and tooth rib b is triangular, 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 b are in line with the axis of the copper tube 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 line to the last line...

Embodiment 3

[0028] Embodiment 3: as Figure 4A 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 tooth rib B and tooth rib b is triangular, 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 b are in line with the axis of the copper tube 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 line to the last line ...

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Abstract

The invention relates to the technical field of heat transferring tubes and discloses a combined tooth type inner grooved copper tube. The combined tooth type inner grooved 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, and the cross section of each tooth rib B and each tooth rib b is triangular. Therefore, the combined tooth type inner grooved 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 tooth-shaped copper tube with internal threads. 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...

Claims

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Application Information

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