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Tucking, the tube and its aggregate null which for the heat exchanger re-expand
Tucking, the tube and its aggregate null which for the heat exchanger re-expand
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机译：塞入，管及其聚集体为热交换器重新膨胀
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摘要
PROBLEM TO BE SOLVED: To cause a thin-walled head exchanger assembly to be operated at high efficiency, its size to be made small and further to cause assembly to be rigid by a method wherein a buckled side wall arranged at the entire length of a pipe is made such that a capillary for the heat exchanger can be bent at a folding and bending section, the capillary is expanded to enable itself to be connected to fin set. ;SOLUTION: This thin-walled pipe for a heat exchanger is made such that a capillary 13 having a buckled side wall 16 extending over an entire length of the capillary 13 is made under a combination of a mold having forming grooves and a compressing ring, a section of the buckled capillary 13 has an elongated fine recess, grooves or opening 18 extending over an entire length of the heat exchanger pipe. With such an arrangement as above, it becomes possible to bend the pipe by applying a core having various kinds of diameters of the bending pipe 13 with small diameter while a bucking of the pipe at its vending is being prevented by the side wall 16. The side wall 16 of the expanded pipe is closely contacted with the fin set, i.e., a row of fins 24 to fix a contacted state between the expanded pipe and the row of fins, form a superior connected state between the pipe and the fin, resulting in that a superior head transferring characteristic can be realized.;COPYRIGHT: (C)1997,JPO
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