| 摘要 |
PROBLEM TO BE SOLVED: To provide a method or the like of making a more inexpensive header to be used in a high pressure heat exchanger used as a condenser, a gas cooler, and/or an evaporator in a high pressure refrigeration system. SOLUTION: A method of providing volume production of highly pressure resistant headers 10, 12 is provided and allows the headers 10, 12 to be formed of a header structure 10, 12 with a relatively thin wall portion 32 and a relatively thick wall portion 30. A strip 40 is utilized to provide the desired thickness at the thin wall portion 32 while allowing both the thin wall portion 32 and the strip 40 to have tube slots 34, 42 formed therein by a one step punching operation. COPYRIGHT: (C)2006,JPO&NCIPI
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