Heat exchange tube, heat exchanger and air conditioner

Abstract

The invention provides a heat exchange tube, a heat exchanger and an air conditioner. The heat exchange tube comprises a tube base body (1) and V-shaped teeth (2) arranged on the inner wall of the tube base body (1); the V-shaped teeth (2) are of a tooth structure protruding and extending inwards from the inner wall of the tube base body (1); and the V-shaped teeth (2) are in a V shape in the section perpendicular to the extending direction of the V-shaped teeth (2). By means of the heat exchange tube, the thickness of a boundary layer of fluid in the heat exchange tube can be effectively reduced, and therefore the turbulence degree of the fluid is improved, heat exchange in the tube is effectively enhanced, the situation that in the prior art, heat exchange is enhanced by increasing the flow speed is not needed, and the problem that the pressure drop is too large is avoided.

Description

technical field

[0001] The invention belongs to the technical field of heat exchange, and in particular relates to a heat exchange tube, a heat exchanger and an air conditioner. Background technique

[0002] In commercial shell and tube heat exchangers, the heat transfer performance of high-efficiency heat exchange tubes largely affects the overall energy efficiency of the unit. In order to improve the heat transfer performance of heat exchange tubes, researchers generally focus their research on the development and optimization of the outer tooth structure of the tube whose heat transfer mode is phase-change heat transfer. As for the strengthening means in the tube, since the heat transfer state is non-phase transfer heat, the heat transfer is mainly enhanced by forced convection. Generally, the heat transfer enhancement performance in the tube is improved by strengthening the turbulent flow in the tube and thinning the boundary layer to reduce the thermal resistance. The...

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