Fin and heat exchanger and refrigerator with the fin

Abstract

The invention provides a fin for a heat exchanger, wherein at least one fixed connecting piece upwards bent extends from the edge of the fin, and has a root part near the edge of the fin and a head part narrower than the root part; a notch part downwards opened and upwards extending into the head part is arranged in the center of the root part; the shapes of the head part and the notch part are produced to enable the head part to be inserted in a notch part of a fixed connecting piece of another same fin at the upper side in a copying manner; and the notch part can receive a head part of a fixed connecting piece of another same fin at the lower side in a copying manner. In addition, the invention further provides a heat exchanger and a refrigerator having the fin. According to the fin and the heat exchanger and the refrigerator having the fin, as the fin has the fixed connecting pieces, the convenient and firm fixation with the adjacent fins is achieved, and the strength of the heat exchanger is prominently improved.

Description

technical field [0001] The invention relates to the dissipation of heat or cold, in particular to a fin, a heat exchanger and a refrigerator with the fin. Background technique [0002] Heat sinks, also known as fins, play an important role in the composition of heat sinks and are widely used in technical fields such as refrigerators and air conditioners, as well as heat dissipation of CPUs. At present, the commonly used heat sink materials are copper and aluminum alloy, both of which have their own advantages and disadvantages. Copper has good thermal conductivity, but it is more expensive, difficult to process, has a small heat capacity, and is easy to oxidize. However, pure aluminum is too soft to be used directly. Only the aluminum alloy used can provide sufficient hardness. The advantages of aluminum alloy are low price and light weight, but the thermal conductivity is much worse than copper. Commonly used types of heat sinks are aluminum extruded heat sinks, aluminum ...

AI Technical Summary

Problems solved by technology

Each fin in the existing heat exchanger is respectively welded on the heat transfer substrate, or welded on the heat transfer pipe; that is to say, the adjacent two fins on the existing heat exchanger are independent of each other. As a result, the coordination between the fins of the heat exchanger is relatively poor, and the strength of the heat exchanger is relatively low.

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