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Radiating fin with spherical protrusions

A technology of heat dissipation fins and heat exchange fins, which is applied in the field of defrosting of air source heat pumps and heat dissipation fins, can solve the problems of unsatisfactory defrosting effect, etc., and achieve the effect of improving defrosting efficiency, reducing influence and accelerating melting.

Inactive Publication Date: 2014-07-16
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the technical problem that the defrosting effect of the finned tube heat exchanger in the existing heat pump is not ideal

Method used

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  • Radiating fin with spherical protrusions
  • Radiating fin with spherical protrusions
  • Radiating fin with spherical protrusions

Examples

Experimental program
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Embodiment

[0019] Such as Figure 1-2 As shown, it is a schematic diagram of the first heat dissipation fin with spherical protrusions, including a plate body 4, and the plate body 4 is provided with multiple rows of uniformly distributed tube holes 1 and spherical protrusions, and the adjacent two rows of tubes The holes 1 and the spherical protrusions are alternately arranged. The edge of each tube hole 1 is provided with an outward step 5 perpendicular to the fin. The arrangement of tube holes 1 and spherical protrusions on the first column is as follows: from top to bottom, tube holes 1, spherical protrusions 2 perpendicular to the fins inward, tube holes 1, outwards perpendicular to the fins Spherical protrusion 3, tube hole 1, spherical protrusion 2 perpendicular to the fin inward, tube hole 1, spherical protrusion 3 perpendicular to the fin outward, ... and so on; on the second column The arrangement of the tube hole 1 and the spherical protrusion is as follows: from top to bott...

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Abstract

The invention discloses a radiating fin with spherical protrusions. The radiating fin comprises a plate. A plurality of rows of pipe holes which are uniformly distributed are formed in the plate, each two adjacent rows of pipe holes are arranged in a staggered manner, and an outward step which is perpendicular to the fin is arranged at the edge of each pipe hole. The radiating fin is characterized in that the spherical protrusions which are uniformly distributed are further arranged on the plate, the pipe holes in each row and the corresponding spherical protrusions are arranged at intervals, and a row of corresponding spherical protrusions is arranged between each two corresponding rows of pipe holes. The radiating fin has the advantages that the structure and the shape of the fin are modified on the basis that the overall structure and raw materials of a heat exchanger are not changed, accordingly, a heat exchange coefficient can be increased, and influence of air layers which are formed at second defrosting stages on the defrosting efficiency can be reduced.

Description

technical field [0001] The invention relates to a heat dissipation fin with spherical protrusions, in particular to the defrosting of an air source heat pump, and belongs to the field of defrosting of heat exchangers of refrigeration equipment. Background technique [0002] The finned tube heat exchanger is mainly composed of metal tubes and fins, among which fins play an extremely important role in the composition of the heat exchanger, and its structure directly affects the heat dissipation effect of the fins. A well-designed fin can Greatly improves heat exchanger performance. [0003] When the air source heat pump operates in heating mode in winter, if the temperature of the outdoor coil of the heat pump is lower than the dew point temperature of the outdoor air and the freezing point of water, frost will form on the surface of the outdoor coil of the heat pump. For the heat pump to operate properly, the outdoor heat exchanger needs to be defrosted. Defrosting is a com...

Claims

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Application Information

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IPC IPC(8): F28F1/30
Inventor 赵敬德王金龙郭爽李雷雷施振扬姚明健
Owner DONGHUA UNIV
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