| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure and a method for connecting a header tank of a heat exchanger to a connector, enabling sure positioning and temporary fixing by a simple structure, and brazing of constant quality at low cost. SOLUTION: In connecting the header tank 1 of the heat exchanger to the block-shaped connector 2 by brazing with a communicating hole 1a formed in the plate wall of the header tank 1 positioned to a distributing hole 2b formed in the connector 2, the communicating hole 1a of the header tank is formed smaller than the distributing hole 2b of the connector in advance, a punch 13a is driven from the inside of the header tank with the communicating hole positioned to the distributing hole, the periphery 1b of the communicating hole formed in the plate wall of the header tank is subjected to burring by the punch, and the periphery 1b of the communicating hole is fixed by caulking to the inner circumferential part of the distributing hole 2b of the connector. The header and the connector are brazed in this state. COPYRIGHT: (C)2006,JPO&NCIPI
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