Slotted fin for refrigeration heat exchanger

Abstract

The invention discloses a slotted fin for a refrigeration heat exchanger. The slotted fin comprises a fin body, flanged edges, pressing grooves and fin holes, wherein the fin holes comprise a first fin hole, a second fin hole, a third fin hole and a fourth fin hole. The product is reasonable in design, highly compact in structure, light in overall weight and capable of saving a large amount of material cost; the manufacturing process of the product is simple, the surface adopts the combination of circular holes, elliptical holes and kidney-shaped holes, the disturbance of air flow on a flowingboundary layer is enhanced, especially, the disturbance on gas in a wake flow area is enhanced, the thickness of a heat boundary layer is reduced, the heat transfer performance of the fin is enhanced, and the heat exchange efficiency is high; and in the case of the product, the frosting rate of the surface of the fin body is reduced, the flowing resistance of the air side is reduced, the refrigeration energy consumption is greatly saved, and the slotted fin is particularly suitable for the refrigeration heat exchanger, which works under a frosting working condition for a long time, of a refrigerator, a refrigeration house, a freezer and the like.

Description

technical field [0001] The invention relates to the field of heat exchangers, in particular to perforated fins for refrigeration heat exchangers. Background technique [0002] A refrigeration heat exchanger is a device in a refrigeration system that exchanges heat between fluid media of different temperatures. According to its working principle, there are two types of heat exchangers: dividing wall type and hybrid type. In the fields of refrigeration and air conditioning, HVAC, etc., it mainly involves hybrid heat exchangers and partition heat exchangers, among which partition heat exchangers are the most widely used. The heat exchangers in the refrigeration unit are all surface heat exchangers, and the structural types of the heat exchangers include shell and tube, serpentine coil, spiral tube, finned tube and plate fin. [0003] The fins in the plate-fin heat exchanger are the core components, and the fins are usually flat fins. The main function of flat fins is to expa...

AI Technical Summary

Problems solved by technology

The main function of flat fins is to expand the heat transfer surface, but the heat transfer effect of the finned tubes using this kind of fins is not ideal, and the energy consumption is large, which brings inconvenience to people's use.

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