Heat exchanger

Abstract

The present invention provides a heat exchanger, comprising a refrigerant tube processed to be zigzag shape of altered straight tube and bent tube; and a plurality of panel type fins formed with long-hole shaped through holes for the refrigerant tube. The straight tube contact tightly with the panel type fins, the through holes have rectangle sections and round sections, both-side short edges on the rectangle sections form long hole shape of the round sections, bias flow sections are arranged on the panel type fins, the bias flows sections protrude from the surface of the fins to long edges of the rectangle sections in manner that the preset sections of center parts of the long edges are highest parts.

Description

technical field [0001] The present invention relates to a heat exchanger used as a cooler or the like in refrigeration equipment such as a refrigerator. Background technique [0002] In recent years, for example, for refrigerators, there has been a tendency to increase the internal capacity of the box while maintaining the external dimensions of the box. Therefore, the related components of the cooling system have been required to be miniaturized year by year. Downsizing is also required for heat exchangers, and the need for thinner heat exchangers is increasing. [0003] On the other hand, with the increase in the price of raw materials, the requirements for rationalization of component materials are also increasing, and it is required to reduce the thickness of materials while improving the performance of heat exchangers. As an example, a heat exchanger disclosed in Japanese Patent No. 2811601 (Patent Document 1) is known. In order to improve performance, plate fins of he...

AI Technical Summary

Problems solved by technology

[0006] However, when conventional heat exchangers are used in refrigerators, for example, frost will adhere to the plate fins 103 of the heat exchanger during operation. , there is a problem that the plate fins 103 are blocked by frost and cause the air volume to drop

[0007] In addition, in the above-mentioned conventional structure, the water discharged during defrosting tends to remain in the rim portion 105 at the long hole 104. As a result, the drain water freezes after the refrigerator is operated, and the frost accumulates on the ice to accelerate the frosting process. The blockage between the plate fins 103, thereby accelerating the decline of the air volume

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