Heat exchanger and internal threaded copper tube thereof

An internal thread and copper tube technology, applied in the field of heat exchangers and their internal thread copper tubes, can solve problems such as tooth shape damage and reduce heat transfer efficiency, and achieve enhanced turbulent flow strength, high heat transfer efficiency, and improved turbulence. Effect

Inactive Publication Date: 2012-02-15

GOLDEN DRAGON PRECISE COPPER TUBE GROUP

8 Cites 17 Cited by

AI-Extracted Technical Summary

Problems solved by technology

This single-tooth type internally threaded copper tube has good heat transfer performance, but during...

Method used

Shown in Fig. 1, the tooth profile of internally threaded tooth can be two kinds, be respectively the first internally threaded tooth 11 and the second internally threaded tooth 12, in the present embodiment, the tooth of the first internally threaded tooth 11 The tooth height is higher than that of the second internal thread teeth 12, and the first internal thread teeth 11 and the second internal thread teeth 12 are alternately distributed in groups. Since the tooth heights of the first internally threaded teeth 11 and the second internally threaded teeth 12 are different, they are alternately arranged to help the threaded teeth on the inner wall of the internally threaded copper tube to be evenly distributed, and the heat transfer efficiency at each position is close to each other. And stress concentration can be avoided.

[0028] The present invention enhances the turbulence intensity of the refrigerant through the differenc...

Abstract

The invention discloses an internal threaded copper tube. The internal threaded copper tube comprises a tube body (1), wherein internal threaded teeth with different height and various tooth shapes are formed on the inner wall of the tube body (1) and are alternately distributed. Due to the difference of the tooth shapes and the height, the turbulent flow intensity of a coolant is increased, and disturbance on the coolant and heat conduction energy efficiency are improved. In the using process, the tooth shapes of the common internal threaded copper tube are damaged while the tube is expanded, and due to the difference of the tooth shapes and the height, only a part of tooth shapes of the internal threaded copper tube are damaged after the internal threaded copper tube is expanded, and the internal threaded copper tube still has high heat transfer efficiency. By using the optimized design, the weight, production cost and using cost of the tube can be reduced. The internal threaded copper tube is suitable to be widely used in the fields of refrigeration, air conditioning, power generation, sugar making, chemical industry, solar energy and the like.

Application Domain

Chemical industryTubular elements

Technology Topic

Chemical industryHeat transfer efficiency +9

Image

Examples

Experimental program(1)

Example Embodiment

[0024] The invention discloses a heat exchanger and its inner thread copper tube, so as to ensure that the inner thread copper tube still has high heat transfer efficiency after the expansion and expansion process of the inner thread copper tube is processed.

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] see Figure 1-Figure 3 , figure 1 A partial cross-sectional structural schematic diagram of the cross-section of the internally threaded copper pipe provided by the embodiment of the present invention; figure 2 A cross-sectional structural schematic diagram of a longitudinal section of an internally threaded copper pipe provided by an embodiment of the present invention; image 3 It is a cross-sectional structural schematic diagram of a longitudinal section of an internally threaded copper pipe provided by another embodiment of the present invention.

[0027] The internally threaded copper pipe provided by the present invention includes a pipe body 1, wherein the inner wall of the pipe body 1 is provided with multiple (ie at least two) toothed internal thread teeth with different heights, and the various toothed The internal thread teeth are alternately distributed. Those skilled in the art can understand that the internal thread teeth in the internally threaded pipe are helically distributed on the inner wall of the pipe body 1 . In this embodiment, the difference from the prior art is that the thread teeth have various tooth shapes, and the thread tooth heights of the various tooth shapes are different.

[0028] The invention enhances the turbulent flow intensity of the refrigerant through the difference in the heights of different tooth profiles, improves the disturbance to the refrigerant, and improves the heat conduction energy efficiency. During use, part of the tooth profile of the copper pipe with internal thread will be destroyed when the pipe is expanded, but after the copper pipe with internal thread provided by the present invention is expanded and expanded, only part of the tooth profile is damaged due to the difference in the height of different tooth profiles. If it is damaged, the inner threaded copper tube still has a high heat transfer efficiency. Through the optimized design of the present invention, the weight of the pipe can be reduced, and the production and use costs can be reduced. The inner thread copper pipe provided by the invention is suitable for being widely used in the fields of refrigeration, air conditioning, power generation and sugar production, chemical industry, solar energy and the like.

[0029] Depend on figure 1 As shown, there are two tooth types of the internal thread teeth, namely the first internal thread tooth 11 and the second internal thread tooth 12. In this embodiment, the tooth height of the first internal thread tooth 11 is higher than that of the second internal thread tooth. The tooth height of the thread teeth 12 is high, and the first internal thread teeth 11 and the second internal thread teeth 12 are alternately distributed in groups. Since the tooth heights of the first internal thread teeth 11 and the second internal thread teeth 12 are different, arranging the two alternately helps the thread teeth on the inner wall of the internal thread copper tube to be evenly distributed, and the heat exchange efficiency at each position is close to each other. And can avoid stress concentration.

[0030] like figure 1 As shown, the two first internal thread teeth 11 are arranged adjacently in a group; the two second internal thread teeth 12 are arranged adjacently in a group. That is, the first internal thread teeth 11 and the second internal thread teeth 12 are alternately arranged in groups of two. Of course, in the present invention, the first internal thread teeth 11 and the second internal thread teeth 12 can also be alternately arranged in other numbers as a group, for example, one, three, and so on.

[0031] Number n of first female thread teeth 11 a For: 2≤n a ≤60; the number n of the second internal thread teeth 12 b For: 2≤n b ≤60. The numbers of the first internal thread teeth 11 and the second internal thread teeth 12 are equal or may not be equal, which is not limited in the present invention.

[0032] The wall thickness TW of the pipe body 1 is: 0.15mm≤TW≤15mm. The tooth height of the first internal thread tooth 11 is Ha, the tooth height of the second internal thread tooth 12 is Hb, and the height difference Z between the first internal thread tooth 11 and the second internal thread tooth 12 is ≥ 0.01 mm. The addendum angle of the first internal thread tooth 11 is αa, the addendum angle of the second internal thread tooth 12 is αb, and the addendum angle of the first internal thread tooth 11 and the second internal thread tooth 12 are equal or different. Inventions are not limited.

[0033] like figure 2 and image 3 As shown, the helix angles of the first internal thread tooth 11 and the second internal thread tooth 12 are βa and βb respectively, and the helix angles βa and βb may be the same or different, but the angles of βa and βb are both ≤50°.

[0034] The heat exchanger provided by the present invention includes an internally threaded copper tube, wherein the internally threaded copper tube is the internally threaded copper tube disclosed in the above embodiments. Since the heat exchanger provided by the present invention adopts the internally threaded copper tube disclosed in the above-mentioned embodiments, it has all the technical effects of the internally threaded copper tube, which will not be repeated here in this case.

[0035] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

[0036] The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

PUM

Property	Measurement	Unit
Wall thickness	<= 15.0	mm
Helix angle	<= 50.0	deg

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Classification and recommendation of technical efficacy words

increase disturbance

Heat exchanger and internal threaded copper tube thereof

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

PUM

Description & Claims & Application Information

Similar technology patents

Aerobic-anaerobic combined tea polyphenol production wastewater treatment system

Novel heat exchanger for carbon fiber production line

Fishbone-shaped novel plate heat exchanger plate

Wet desulfurization, denitration and absorption apparatus

Impeller type washing machine with tubular detergent instant dissolver

Classification and recommendation of technical efficacy words

Boiler water-cooled wall protecting device capable of preventing coking and high temperature corrosion

Circulating fluidized bed domestic waste incineration power generation boiler

Precise air conditioner for computer room and integral heat exchanger of precise air conditioner

Plasma generator

Secondary air distribution device used for circulating fluidized bed boiler