| 摘要 |
In the intermediate plates (22 to 24) between five other plates (21 to 25), a coolant flow path consisting of openings (231, 241) for delivering vaporized coolant from a boiling area (61) to tubes (3a) and a communication path (242) for delivering the condensed liquid coolant, a communication hole (232), a peripheral flow path (221) and a linear flow path (222) are formed. The liquid coolant flow path is longer than the vaporized coolant flow path and is connected to the boiling area (61) solely from below.
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