| 摘要 |
A method of manufacturing a heat exchanger includes a pair of tubular header pipes having a plurality of connection holes for heat exchanger tubes extended between the header pipes. A plurality of opposite corresponding cut portions are formed on both ends of a plate. The plate is bent into an almost tubular shape. The heat exchanger tubes are inserted into the opposite cut portions. The plate is further bent into a complete tubular shape, with the opposite cut portions forming completed connection holes. Thus, the connection holes are formed at desired positions of the heat exchanger and simultaneously, the tubes can be precisely and securely connected to the header pipes.
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