Cooling fin for heat exchanger

Abstract

A flat heat exchanger fin includes a body having arrays of louver groups formed therein. Each array includes four louver groups. The first and second louver groups are disposed over a respective pipe, with the second louver group disposed behind the first louver group. The third and fourth louver groups are disposed beneath a respective pipe, with the fourth louver group disposed behind the third louver group. Each louver group includes a plurality of louvers which form slits through the body. The slits extend transversely relative to the air flow direction and generally radially with respect to the respective pipe. Each louver group includes a proximate edge facing a respective pipe, and a remote edge facing away from the pipe. The remote edge is spaced from the respective pipe by a substantially constant separation distance. Dew-draining ridges are formed in the fin above, below, in front of, and behind respective pipes.

Description

technical field [0001] The present invention relates to a heat exchanger of an air conditioner, and in particular, to a fin of a heat exchanger capable of improving heat transfer performance. Background technique [0002] like figure 1 As shown, a common air-conditioning heat exchanger includes a plurality of vertical flat fins 1 parallel to each other and at a predetermined distance, and a large number of heat exchange tubes 2 passing through the vertical fins 1 horizontally. The airflow is in the space defined by the fin 1 along the figure 1 Flow in the direction indicated by the middle arrow, and exchange heat with the fluid flowing in the heat exchange tube 2. [0003] Because there is a thermal fluid flowing around each flat fin 1, it is well known that the thickness of the thermal boundary layer 3 on the two heat transfer surfaces of the fin 1 is proportional to the square root of the distance from the airflow inlet end of the fin 1 to this pla...

AI Technical Summary

Problems solved by technology

The airflows flowing over these edges e do not mix well, resulting in a wider air stagnation area after each duct 2, while increasing the pressure difference, thereby reducing the heat transfer efficiency of the heat exchanger

[0014] In addition, because the convex eaves are only vertically formed in line with the conduit 2, the strength of the fin 1 at the front and rear of the conduit 2 cannot be increased, thereby greatly reducing the overall strength of the fin 1

Also there is not enough eaves to drain all the condensation that accumulates on the fin 1 surface

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