Asymmetric fin condenser pipe

Abstract

The invention discloses an asymmetric fin condenser pipe, which comprises a heat exchanging pipe body, fins arranged on the outer surface of the pipe body and a spiral groove arranged in the pipe body. The asymmetric fin condenser pipe is characterized in that the fin arranged on the outer surface of the pipe body is of a geometrical shape with asymmetric upper and lower parts; the upper part of each fin is a semi-circle fin; and at least two fan-shaped notches are arranged on the lower part of each fin, so that one or a plurality of ladder-shaped fins are formed. With the adoption of the asymmetric fin condenser pipe provided by the invention, the shortages of a common condenser pipe are overcome, so that the liquor drainage of the condenser heat exchanging pipe can be realized rapidly, the liquid film thickness of the condenser heat exchanging pipe can be reduced, and therefore, the better heat exchanging efficiency can be realized.

Description

technical field [0001] The invention relates to a condensing heat exchange tube, in particular to a condensing tube designed with asymmetrical fins. Background technique [0002] Condensers are important equipment in many industrial production processes, for example, condensers in chillers in central air-conditioning systems. The performance of the condenser depends to a large extent on the heat transfer performance of the heat exchange tube. [0003] The condensing heat exchange tube is a tube with an inner cavity. Usually, the inner surface of the tube is smooth or the inner wall surface is provided with grooves distributed in a spiral shape along the axial direction of the tube; the outer surface of the tube is smooth or has a groove along the axial direction of the tube Fins distributed in a spiral shape are usually called finned tubes. In general, the fin shape is an axisymmetric shape centered on the tube axis, such as a circular fin; or a symmetrical shape with the ...

AI Technical Summary

Problems solved by technology

For the fins on the upper part of the heat exchange tube, the liquid film on it flows to the root of the fin under the action of capillary force, which reduces the thickness of the liquid film on the surface of the fin; but for the fins on the lower part of the heat exchange tube, the liquid film on it Acted by capillary force, it is not easy to drip, and accumulates in the lower part of the heat exchange tube to form a stagnant liquid. In this case, the fins in the lower part of the heat exchange tube and the surface of the base tube are submerged in the liquid, which greatly reduces the heat transfer performance.

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