| 摘要 |
PROBLEM TO BE SOLVED: To provide a connector temporarily fixing structure of a heat exchanger allowing the secure brazing of a connection part between a supply pipe or a delivery pipe and a header pipe for prevention of leakage. SOLUTION: A passage hole 21 communicating an inside with an outside is formed in the header pipe, a screw part 211 is formed on the inner peripheral surface of the passage hole 21, a connection hole 31 for connecting the supply pipe or the delivery pipe is formed in a connector block 3, and a communication hole 32 communicating the connection hole 31 with the passage hole 21 in the header pipe 2 is formed in the connector block 3. The communication hole 32 is formed so that its diameter is smaller than that of the connection hole 31. A collar bolt 4 having a through inner hole and having a thread part 41 on the forward end outer peripheral part thereof is provided, and a screw head part 44 having a diameter larger than the outer diameter of the screw part 41 and smaller than the inner diameter of the connection hole 31 is formed on the collar bolt 4. COPYRIGHT: (C)2004,JPO&NCIPI
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