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High-efficiency heat exchange tube with minuteness passage

A technology of micro-channels and heat exchange tubes, applied in tubular elements, heat exchange equipment, lighting and heating equipment, etc., can solve the problems of low heat exchange efficiency, increase heat exchange efficiency, increase fluid flow velocity, and enhance heat exchange efficiency effect

Inactive Publication Date: 2009-02-11
SNTO TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(In order to improve heat exchange efficiency, a small fan is usually installed on one side of the pipe in the air conditioner body. During the use of the air conditioner, the small fan is turned on to accelerate the flow of gas, and the heat exchange efficiency of the windward side of the pipe can be increased, while the pipe On the leeward side, the gas flow has little effect on it, and the heat transfer efficiency is very low

Method used

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  • High-efficiency heat exchange tube with minuteness passage
  • High-efficiency heat exchange tube with minuteness passage
  • High-efficiency heat exchange tube with minuteness passage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1: as image 3 As shown, the high-efficiency heat exchange tube with a micro-channel structure of the present invention is composed of an outer tube 3 and a non-conductive inner tube 2 with a blocking body 1 at both ends or its lumen; the outer diameter of the inner tube 2 used is 6mm, its outer wall has a spiral convex tooth structure 5 with a spiral triangular structure, the inner diameter of the outer tube 3 is 9mm, and its inner wall is smooth, so about 16 nearly trapezoidal fine channels 4 are formed between the inner tube 2 and the outer tube 3, The hydraulic diameter of the microchannel is about 0.5 mm. The inner pipe 2 and the outer pipe 3 are tightly connected by pipe expansion or welding. The pipes are made of aluminum, and under the same flow rate, the heat exchange efficiency of this pipe is more than 20% higher than that of ordinary aluminum pipes with the same diameter.

Embodiment 2

[0047] Embodiment 2: as Figure 4 As shown, the high-efficiency heat exchange tube with a fine channel structure of the present invention is composed of an outer tube 3 and a non-conductive inner tube 2 with a blocking body 1 at both ends or in a certain lumen; the inner and outer diameters of the outer tube are 9 mm, and the inner wall There are straight protruding teeth 5 with a triangular structure, the outer diameter of the inner tube 2 is 6 mm, and its outer wall is smooth, and 16 nearly trapezoidal straight micro-channels 4 are formed between the two tubes. The hydraulic diameter of the micro-channels is about 1 mm. Using copper tubes, under the same flow rate, its heat exchange efficiency is more than 10% higher than that of ordinary internal threaded copper tubes with the same diameter.

Embodiment 3

[0048] Embodiment 3: as Figure 5 As shown, the high-efficiency heat exchange tube with micro-channel structure of the present invention is composed of an outer tube 3 and a non-conductive inner tube 2 with a blocking body 1 at both ends or in a lumen; the outer diameter of the inner tube 2 is 6mm, Its outer wall has spiral convex teeth 5 with a spiral trapezoidal structure, the inner diameter of the outer tube 3 is 9mm, and its inner wall is an internal thread structure, through the combination of the spiral convex teeth 5 and the internal thread of the outer tube, a plurality of spiral fine channels 4 are formed therebetween. The hydraulic diameter of the micro-channel is about 1mm, and the pipe is made of copper pipe. Since the internal thread in the micro-channel increases the heat transfer area and fluid turbulence, the heat transfer efficiency of this pipe is higher than that of the same pipe at the same flow rate. The diameter of ordinary copper pipes is increased by mo...

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Abstract

The invention discloses a high-efficient heat exchange tube with a fine channel structure, which consists of an outer tube and a non-conducted inner tube that are sleeved with each other. The heat exchange tube is characterized in that a regular or irregular fine channel with the hydraulic diameter less than 3mm is formed between the outer tube and the inner tube; and the fine channel assumes a helical shape, a helical-like shape or a flat shape along the axial direction of the inner tube. The invention has the advantages of realizing the technology that an air-conditioning heat exchanger transfer heat through fine channel, eradicating the defects of the difficulty of dewatering and defrosting, heating impossibility, and the like, in the existing parallel follow art, realizing helixication of the fine channel, breaking through the problem that the common heat exchange tube can carries out high-efficient heat exchange on only one side, weakening or eliminating the stratosphere hindering heat exchange, which realize comprehensive high-efficient heat exchange of the whole heat exchange tube, maintaining the prior production equipment and the prior production process of a factory, maintaining the prior integral structure mode of the heat exchanger, and avoiding the problem that the prior production equipment and prior production process have to be replaced by adopting the prior parallel flow art, which greatly reduce cost.

Description

technical field [0001] The invention relates to a high-efficiency heat exchange tube with a fine channel structure. The heat exchange tube is mainly used for heat exchangers in refrigeration industries such as air conditioners, and can also be used in the fields of chemical industry, petroleum, energy, machinery, power, biology, medicine, etc. . Background technique [0002] At present, most air conditioners use finned tube heat exchangers. Relevant state departments have made it clear that air-conditioning energy efficiency standards will be raised in 2009. At that time, the entry threshold for energy efficiency ratio of air-conditioning products will be raised from the current 2.6 to above 3.0. It is urgent to adopt new enhanced heat transfer technology to achieve the goal of energy saving. Due to the size effect of micro-channels, under the unit area and unit temperature difference, small-diameter micro-channels have stronger heat transfer capacity, [Liu Huanling, Jia Ji...

Claims

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Application Information

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IPC IPC(8): F28F1/10
Inventor 杨益胡少虬
Owner SNTO TECH GRP
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