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Heat exchanger

A heat exchanger and heat exchange tube technology, applied in indirect heat exchangers, heat exchanger types, heat exchanger fixing and other directions, can solve the problems of complex brazing process, high equipment investment, unstable product quality, etc. The effect of reducing manufacturing cost and equipment investment and improving product quality

Inactive Publication Date: 2013-08-14
DANFOSS MICRO CHANNEL HEAT EXCHANGER JIAXING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Brazing technology can be used for heat exchangers with small hydraulic diameter heat exchange tubes, but the brazing process is complicated, equipment investment is high, and product quality is unstable, which greatly limits the market competitiveness of microchannel heat exchangers.

Method used

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  • Heat exchanger
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as Figures 2 to 8As shown, the fin 20 includes a tubular portion 21 , and the heat exchanger 100 further includes a ring 30 for fastening the tubular portion 21 of the fin 20 to the heat exchange tube 10 . The inner diameter of the tubular portion 21 may be substantially the same as the outer diameter of the heat exchange tube 10 or may be slightly larger than the outer diameter of the heat exchange tube 10 .

[0054] Such as Figure 7a , 7b , 8, the plurality of tubular parts 21 of the fins 20 and the plurality of rings 30 are alternately sleeved on the heat exchange tube 10, by alternately sleeved on the heat exchange tube 10 in the axial direction The tubular portions 21 of the plurality of fins 20 on 10 and the plurality of said rings 30 apply pressure so that the tubular portions 21 and rings 30 fit together one over the other. Under the action of external force, the tight contact between the heat exchange tube 10 and the fin 20 can be ensured while pressi...

Embodiment 2

[0066] Only the parts in which the second embodiment differs from the first embodiment are described below.

[0067] see Figure 11a to Figure 13b , the fin 20 includes a tubular portion 21 . The tubular portion 21 extends from the main body portion 23 to one side of the main body portion, that is, the tubular portion 21 is directly connected to the main body portion 23 and integrated. For example, the axial direction of the tubular portion 21 may be substantially perpendicular to the main body portion 23 . In the second embodiment, the ring 30 is fitted on the inner periphery of the tubular portion 21 and the inner periphery of the ring 30 is fitted on the outer periphery of the heat exchange tube 10 . That is, the tubular portion 21 is sleeved on the ring 30 , and the ring 30 is sleeved on the heat exchange tube 10 . The inner diameter of the ring 30 may be equal to or slightly larger than the outer diameter of the heat exchange tube 10 .

[0068] Such as Figure 14 As ...

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Abstract

The invention provides a heat exchanger which comprises a heat exchanging tube, fins and rings, wherein each fin comprises a tubular part, and the rings are used for fastening the tubular parts of the fins on the heat exchanging tube. The tubular parts of the plurality of fins and the plurality of rings are alternately sleeved on the heat exchanging tube, and the tubular parts and the rings are matched together in a mode that one is sleeved on another by exerting pressure on the tubular parts of the plurality of fins and the plurality of rings in the axial direction of the heat exchanging tube, so that the tubular parts of the plurality of fins are fixed on the heat exchanging tube. When the diameter of the heat exchanging tube is small, the heat exchanging tube can not be connected with the fins through the tube expansion technology, and by means of the heat exchanger, the complex brazing technique can be avoided, product quality is improved, and product manufacturing cost and device investment are reduced.

Description

technical field [0001] The invention relates to a heat exchanger. Background technique [0002] see figure 1 , the heat exchanger 100 includes fins 20 and heat exchange tubes 10, and the fins include tubular parts. The tubular portion of the fin is fastened to the heat exchange tube. As for the method of fastening the tubular portion of the fins on the heat exchange tube, mechanical tube expansion process and brazing process are generally used. For the same heat exchanger size, the smaller the hydraulic diameter of the heat exchange tube, the higher the heat exchange performance and the lower the material cost. However, the mechanical tube expansion technology is greatly affected by the diameter of the heat exchange tube. At present, it can only be applied to copper tubes with a diameter greater than 5mm, and this technology is not suitable for aluminum tubes. The unlimited pursuit of cost performance in the current air-conditioning industry is a big limitation. Brazing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/32
CPCF28F1/32F28F2275/10F28D1/0477F28F2240/00F28F1/325B23P15/26F25B39/00F28D1/04
Inventor 陈红兵蒋建龙徐阳李开泉杰弗里·L·塔克
Owner DANFOSS MICRO CHANNEL HEAT EXCHANGER JIAXING