Falling film heat exchange tube, falling film heat exchanger and air conditioner

Abstract

The invention provides a falling film heat exchange tube, a falling film heat exchanger and an air conditioner. The falling film heat exchange tube comprises a tube base body and vertical teeth arranged on the outer wall of the tube base body, the vertical teeth extend out of the outer wall of the tube base body in the direction away from the outer wall, and first side teeth horizontally protruding in the first direction are arranged at the tops of the vertical teeth; second side teeth are further arranged on the side walls between the tops and the bottoms of the vertical teeth in a protruding manner in the second direction, and the first direction is opposite to the second direction; the multiple vertical teeth are arranged in the axial direction and / or the circumferential direction of the tube base body; and semi-closed evaporation cavities can be formed between the first side teeth and the vertical teeth which are adjacent, between the first side teeth and the second side teeth which are adjacent, between the second side teeth and the vertical teeth which are adjacent, between the first side teeth and the vertical teeth which are connected with each other, and between the second side teeth and the vertical teeth which are connected with each other. According to the falling film heat exchange tube, the evaporation heat exchange efficiency of the heat exchange tube and the condensation heat exchange efficiency of the heat exchange tube can be improved under the heating working condition and the refrigeration working condition.

Description

technical field [0001] The invention belongs to the technical field of heat exchange, and in particular relates to a falling film heat exchange tube, a falling film heat exchanger and an air conditioner. Background technique [0002] With the transformation of my country's energy policy from focusing on coal and other fossil fuels in the early days of the founding of the People's Republic of China to the current vigorous development of clean energy such as electricity, and the high demand for environmental protection and energy conservation in winter heating in the north in recent years, the air-conditioning field has The performance requirements of heat exchangers are getting higher and higher. Falling film heat pumps are more and more widely used due to the advantages of less refrigerant injection, free switching between cooling and heating conditions, and saving a set of circulating water supply pipelines. warm northern regions. In the falling film heat pump system, the ...

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the low heat exchange efficiency of falling film heat exchange tubes in the prior art, which cannot meet the needs of high-efficiency falling film evaporation and meet the needs of external condensation. Thereby providing a falling film heat exchange tube, falling film heat exchanger and air conditioner

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