| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust valve capable of being closed after completion of the gas exhaustion even if the pressure on the inlet hole side is high. SOLUTION: The exhaust valve includes a casing consisting of a body 1 and a lid 2 whereby a valve chest 3 is formed where an inlet hole 4 is open in the lower part and an outlet hole 5 is open in the upper part. A valve seat 6 is formed between the valve chest 3 and the outlet hole 5. The valve chest 3 is furnished internally with an outer float receptacle 10 approximately in a cylindrical shape having a bottom furnished with a flow passage 16 in the area to the valve chest 3 inner wall and having a through hole 11 at the bottom. The outer float receptacle 10 is furnished internally with an inner float receptacle 15 approximately in a cylindrical shape having a bottom furnished with a flow passage 17 in the area to the inner wall of the outer float receptacle 10 and having a through hole 14 at the bottom. Inside the inner float receptacle 15, a float 12 is put in the free state. COPYRIGHT: (C)2004,JPO
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