| 摘要 |
PROBLEM TO BE SOLVED: To provide a seal structure of a vacuum breaker of a condenser capable of well maintaining vacuum of the condenser for a long period of time. SOLUTION: The vacuum breaker 2 for opening inside of the condenser to atmospheric air in an opening state is mounted with one end part of an L-shaped pipe 14 with its the other end part directed upward and opened to the atmospheric air. Further, in a closing state of the vacuum breaker 2, a predetermined amount of water is stored in the L-shaped pipe 14 so as to block between the vacuum breaker 2 and the atmospheric air by the water. While the water is supplied to the inside of the L-shaped pipe 14 via a water-sealing valve 6, the excess water in the L-shaped pipe 14 over a predetermined water level is made to overflow, and the overflow of the water is monitored. COPYRIGHT: (C)2009,JPO&INPIT
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