Novel louvered type heat exchanger fin

Abstract

The invention discloses a novel louvered type heat exchanger fin. The heat exchanger fin comprises a fin body and symmetrical triangular louvered pieces, and a structure of the fin is prepared by stamping thin plates; a louvered mode is composed of a pair of diversion triangular louvered pieces and a triangular hollowed-out seam; each group of louvered structures is located in a wake flow area ofa leeward surface of a copper pipe, the center shaft of the triangular hollowed-out seam is connected with the center of a base tube and has a certain interval with the base tube. According to the novel louvered type heat exchanger fin, the louvered pieces can effectively reduce the formation of a vortex region, a boundary layer of flow around a column is thinned, and the fluid with different flowing time is guided to be mixed and guided to the back-row base tube; the top angles of the louvered pieces on the two sides are attached to the plane of the fin, and the resistance caused by the generation of secondary flow is reduced; a special structure formed by the internal triangular hollow-out seam and the louvered pieces can realize the flow type of countercurrent and cross-flow of multi-strand fluid, and the comprehensive strengthening performance is improved; and the structure of the fin is a simple modification based on an common fin, and has good universality.

Description

technical field [0001] The invention belongs to the technical field of heat exchangers used by air conditioners and air conditioners, and is suitable for heat exchange equipment in industries such as energy, chemical industry, and HVAC, and specifically relates to a heat exchanger fin structure with triangular windows. Background technique [0002] With the continuous development of my country's society and economy, the energy situation is becoming more and more severe. With increasing energy costs and new regulations aimed at achieving greater efficiency and better environmental protection, high-performance heat transfer equipment will continue to play a very important role. In various air heat exchange equipment, the common forms of fins are straight fins, corrugated fins, and louver fins. For a typical phase-change heat exchanger for heating, ventilation, and air-conditioning refrigeration, the thermal resistance of the air side can reach more than 60% of the thermal res...

AI Technical Summary

Problems solved by technology

[0004] The improved form of fins represented by the setting of bridges or louvers, although the heat transfer capacity has been improved to a certain extent compared with the flat plate, but it lacks the design for the distribution of the air stagnation area, and the improvement is relatively limited; and the flow resistance of this type of structure Larger and larger form changes have a significant impact on structural stability; the narrow gap structure makes the fin structure prone to frosting when it operates in low temperature and humidity conditions

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