Closing structure for flat tube of condenser of automobile air-conditioner

Abstract

The invention provides a closing structure for a flat tube of a condenser of an automobile air-conditioner, in order to solve the problems of a present flat tube structure that the inserting and positioning are difficult, the correcting for the center distance of collecting mains is required before brazing, the invariableness cannot be ensured during a brazing process after the correcting, the appearance effect is inferior, and the like, during a core manufacturing process. A joint of an end of the flat tube and the collecting main is arranged in a wedge form, namely, the size of an outer edge on one side of the port of the end of the flat tube is smaller than the size of an inner edge of an assembling hole of the collecting main, and then, is linearly increased to be consistent with the size of the outer edge of a tube body, so that a wedge-shaped transitional zone is formed between the tube body of the flat tube and the port. The closing structure provided by the invention has the beneficial effects that the flat tube can be conveniently inserted into the assembling hole on the collecting main and can be accurately positioned, the center distance between the collecting mains at two ends meets a design demand, and meanwhile, the welding reliability (zero leakage) is ensured. Besides, after the welding is finished, no closing trace of the flat tube can be seen and the appearance quality is increased.

Description

technical field [0001] The present invention relates to all automobile air conditioner condenser (and similar heat exchanger) core body welding technology, and condenser (and similar heat exchanger) core body assembly technology. In particular, it relates to the structure of the ends of the flat tubes of all automotive air-conditioning condensers (and similar heat exchangers). Background technique [0002] Automobile air-conditioning condensers are usually stacked by flat porous heat dissipation tubes (usually referred to as flat tubes) and heat dissipation strips (usually referred to as fins), and then installed (or inserted) collectors at both ends (collectors are usually It is a round tube, oval tube, "D" shaped tube or a semi-circular groove) to form a core, and then welded together by brazing. Usually, in order to facilitate assembly and positioning, an insertion step is designed at both ends of the flat tube. The so-called insertion step refers to reducing the width o...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the difficulties of insertion and positioning of the existing flat tube structure during the manufacture of the core body, the center distance of the collector needs to be corrected before the brazing furnace. After the correction, it cannot be guaranteed that it will not change during the welding process and the appearance effect is poor And other issues

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