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Efficient heat-exchanging pipe of evaporator for electric refrigerator set

A technology of heat exchange tubes and evaporators, applied in the field of evaporative heat exchange tubes, can solve the problems that the heat exchange efficiency of refrigerants cannot be improved, the temperature of the working medium in the heat exchange tubes can be reduced, and the heat exchange can not be performed effectively, so as to achieve reduction Effects of thin temperature boundary layer, enhanced fatigue resistance, and improved cooling performance

Active Publication Date: 2007-06-20
GOLDEN DRAGON PRECISE COPPER TUBE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current heat exchange tubes generally have refrigerant inside the tube and refrigerant water outside the tube. The refrigerant in the tube absorbs the heat of the refrigerant outside the tube through the tube wall and evaporates, thereby reducing the temperature of the refrigerant to achieve the cooling effect.
In the existing heat transfer tubes with similar functions, although a lot of work has been done on the outer fins, such as triangular outer fins, trapezoidal outer fins, etc., the heat exchange tubes are limited to low fin numbers and low Therefore, the heat exchange efficiency of the refrigerant inside the existing electric refrigeration heat transfer tube has not been improved.
The existing heat exchange tubes for refrigerators mainly have the following defects: 1) The heat exchange tubes are equipped with a large number of blades (ie thin sheet fins) on the ordinary smooth copper tubes to increase the heat dissipation area, but the fins assembled on the heat exchange tubes It not only increases the cost, but also increases the overall weight of the heat exchange tube, and because the fins assembled on the heat exchange tube have thermal resistance, heat exchange cannot be performed effectively, so the temperature of the working medium in the heat exchange tube cannot be quickly reduced; 2) Slightly trapezoidal fins are processed on the outer surface of the heat exchange tube, and grooves are opened on the top surface of the fins. Although the trapezoidal fins with grooves increase the heat dissipation area, the condensing agent drops to the fins. When there are grooves on the sheet, it will accumulate in the groove until the groove is full, so it is difficult to form a thin layer of heat exchange film on the surface of the tube, which reduces the heat exchange rate of the tube; 3) The inner surface of the heat exchange tube is generally set For light pipes to reduce the possibility of dirt concentrating on the inner surface of the pipe, or set a small number of internal gears on the inner surface, or set low-toothed internal teeth with extremely low tooth heights on the inner surface (such as usually adopted as The internal tooth height is 0.15~0.18mm), so the contact area between the inner surface of the tube and the refrigerant in the tube is small, and the heat exchange rate is also low

Method used

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  • Efficient heat-exchanging pipe of evaporator for electric refrigerator set
  • Efficient heat-exchanging pipe of evaporator for electric refrigerator set
  • Efficient heat-exchanging pipe of evaporator for electric refrigerator set

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Embodiment Construction

[0019] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Please refer to FIG. 1, the heat exchange tube 100 of the present invention includes polished rod parts (that is, the unprocessed part of the polished tube, not shown) at both ends of the heat exchange tube 100, and fins 31 between the two polished rod parts. The fin part 3, the transition part between the polished rod part and the fin part 3 (that is, the part where the incomplete fin is formed, not numbered), the primary internal teeth 33 and the secondary internal teeth 34 arranged on the inner surface of the tube. Preferably, the heat exchange tube 100 of the present invention is made of copper material.

[0021] Preferably, the primary internal teeth 33 and the secondary internal teeth 34 both have a triangular structure, and the top and bottom of the primary internal teeth 33 and the secondary internal teeth 34 can be smoothly tran...

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Abstract

A high-efficiency heat-exchange tube for evaporators of electric refrigerating units comprises a fin part with external disposed fins. On the inside surface of the heat-exchange tube are disposed at least eight pieces of primary internal teeth and at least eight pieces of secondary internal teeth. The above primary internal teeth and the secondary internal teeth are crossed each other.

Description

Technical field [0001] The invention relates to an evaporative heat exchange tube, in particular to a heat exchange tube used in an evaporator of an electric refrigeration unit. Background technique [0002] Since the advent of air conditioning and refrigeration technology, with the development of science and technology, there have been great changes and developments in unit structure, performance and style. As the core component of the refrigerator, the evaporator, one of the "two devices", with the continuous development of refrigeration and air-conditioning technology, higher requirements have been placed on the heat exchange tube, one of its core components, which is small, thin, and Lightweight and efficient is the mainstream. With the emergence of various high-efficiency tubes, the performance of refrigerators has made great progress. The current heat exchange tubes generally have refrigerant inside the tube and refrigerant water outside the tube. The refrigerant in the tub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/42
Inventor 郝云玉于传富李彭段广超
Owner GOLDEN DRAGON PRECISE COPPER TUBE GROUP
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