Efficient full-liquid heat exchange tube

Abstract

The invention relates to an efficient full-liquid heat exchange tube. The heat exchange tube comprises a tube body, wherein a plurality of spiral fin groups which are distributed spirally are arrangedon the outer wall of the tube body; each spiral fin group comprises a plurality of outer spiral fins; a first groove is formed between every two adjacent spiral fin groups, and dents inwards the tubebody to form a secondary chute; a second groove is formed between every two adjacent outer spiral fins in each spiral fin group, and dents inwards the tube body to form a chute; tertiary chutes are formed in opposite sides of each outer spiral fin; the chutes and the secondary chutes are staggered and communicated; spiral grooves which are integrally molded with the tube body are formed in the inner wall of the tube body. A three-dimensional fin structure with the outer spiral fins, the chutes, the secondary chutes, and the like is formed on the outer surface of the tube body by rolling, so that the heat exchange area of the outer surface of the heat exchange tube is increased, and the heat exchange effect of the outer surface of the heat exchange tube is improved.

Description

technical field [0001] The invention relates to the technical field of heat exchange, in particular to a high-efficiency flooded heat exchange tube. Background technique [0002] As known in the industry, in the fields of refrigeration, air-conditioning engineering, energy and power engineering, etc., refrigeration system units and air-conditioning system units in which liquid evaporates or condenses on the outer surface of the tube bundle are generally involved, and most large-scale central air-conditioning units use flooded evaporators and condenser. Copper tubes are usually used in flooded evaporators and condensers due to the good plasticity and heat transfer properties of copper materials. In order to increase the heat transfer area and improve the heat transfer coefficient, fins (usually called outer fins) are formed on the outer wall of the copper tube by extrusion rolling or welding. Create inner fins. [0003] Furthermore, as known in the industry, since fins are...

AI Technical Summary

Problems solved by technology

Forming fins on the outer wall of the copper tube by rolling, that is, mechanical extrusion processing, can eliminate the aforementioned thermal contact resistance, but the uniformity of the fins and inclined fins obtained cannot meet the expectations of the industry, so the extrusion processing method The obtained heat exchange tube is difficult to maximize the heat transfer performance of flooded evaporation or condensation

At the same time, the evaporator tubes and condenser tubes produced by rolling are currently grooved on the surface of the fins to enhance the effect of evaporation or condensation, but the performance cannot meet the current customer performance requirements for finned tubes

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