Strengthened evaporation heat transferring tube

Abstract

The invention provides a strengthened evaporation heat transferring tube comprising a tube body and fins, the tube body and the fins are integrally formed, the fins are wound around the surface of the outer circumference of the tube body in the spiral direction, the fins are uniformly bent and inclined in the axial direction of the tube body through a tool, gaps between the fins and the tube body form evaporation cavities, a plurality of fin grooves are formed in the fins in the circumferential direction of the tube body, and the fin grooves divide the cavities into multiple small holes. According to the strengthened evaporation heat transferring tube, the fins are uniformly bent and inclined through the tool and will not twist or deform, and the structural shapes of the cavities are uniform, so that bubbles are uniform in the formation and growth processes, the evaporation performance of the heat transferring tube is stabilized, and the heat exchange efficiency of the heat transferring tube is improved.

Description

technical field [0001] The invention relates to a heat transfer tube, in particular to an enhanced evaporation heat transfer tube. Background technique [0002] With the development of enhanced heat transfer technology, surface porous tubes are now well known and applied by various air-conditioning companies. The cavities processed on the outer surface can become the place for the refrigerant to form bubbles. The shape and size of the cavities have a direct impact on maintaining the generation of bubbles and the growth of bubbles. For the convenience of processing, the shape of the outer fins is often processed into a T shape. For example, patent CN200510134630.9 "A kind of flooded copper evaporation heat exchange tube for electric refrigeration" and patent CN200910135786.7 "evaporator heat transfer tube" are all T-shaped fins (such as figure 1 ), forming holes for evaporative heat exchange between the fins. The heat exchange tubes used in the falling film evaporator CN10...

AI Technical Summary

Problems solved by technology

However, the processing process of the T-shaped fins is to press the vertical fins through the hobbing knife to form a flat top of the fins, so that the vertical fins ( figure 1 Medium 2) It may be bent, and the bending shape is irregular and inconsistent, resulting in inconsistent shape and size of holes, which cannot guarantee the evaporation effect, and even reduces the evaporation heat transfer performance

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