Microchannel flat tube production method, microchannel flat tube, microchannel heat exchanger

Abstract

The invention provides a microchannel flat pipe production method. The method comprises the steps: 1) selecting a single plate and spraying soldering flux on the surface of the single plate; 2) symmetrically folding the single plate to form a double-row flat pipe, wherein the double-row flat pipe comprises two single-row flat pipes and a connecting bridge connected with the two single-row flat pipes, and each single-row flat pipe is divided into a plurality of microchannels by a plurality of microchannel partitions; 3) cutting and forming abdicating notches at the two ends of the connecting bridge; 4) performing high-temperature welding combination of the microchannel partitions and the inner walls of the single-row flat pipe through soldering flux, and obtaining a microchannel flat pipe. According to the microchannel flat pipe production method, the single plate is symmetrically folded to form the double-row flat pipe, the abdicating notches are formed in the connecting bridge of the double-row flat pipe, and thus the microchannel flat pipe is acquired. Since the single plate is stable in performance and is high in surface material consistency after being folded, the quality is stable, the quality of the microchannel flat pipe is improved effectively, and the service life of the microchannel flat pipe is prolonged. The invention further provides a microchannel flat pipe and a microchannel heat exchanger.

Description

technical field [0001] The invention relates to the technical field of microchannel flat tubes, more specifically, to a production method of microchannel flat tubes, microchannel flat tubes and microchannel heat exchangers. Background technique [0002] Due to its light weight, small size, and high heat transfer performance, microchannel heat exchangers are gradually being widely used, such as in the field of air conditioning. The microchannel heat exchanger mainly includes: a header, a microchannel flat tube with both ends connected to the header, and fins for enhancing heat exchange. [0003] At present, the microchannel flat tubes used in the microchannel heat exchangers used in air conditioners are all extruded flat tubes. However, when the extruded flat tubes are extruded, uneven material distribution, impurities, air bubbles, etc. are more likely to occur. Phenomenon, resulting in lower quality microchannel flat tube, shorter service life. [0004] To sum up, how to ...

AI Technical Summary

Problems solved by technology

[0003] At present, the microchannel flat tubes used in the microchannel heat exchangers used in air conditioners are all extruded flat tubes. However, when the extruded flat tubes are extruded, uneven material distribution, impurities, air bubbles, etc. are more likely to occur. Phenomenon, resulting in lower quality of micro-channel flat tubes and shorter service life

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