| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust valve having a large vacuum breaking ability and capable of quickly breaking vacuum. <P>SOLUTION: A float receiver 10 which is provided with a flow path between itself and the inner wall of a valve chamber 3, which is formed in a bottomed approximately cylindrical shape, and which has a through-hole 11d in the sidewall so as to extend between the inside and the outside of the float receiver is disposed in the valve chamber 3. A float 12 is disposed in the float receiver 10 in a free state. The sidewall 10a and the bottom wall 10b of the float receiver 10 are separately formed, the sidewall 10a is fixed to the inside of the valve chamber 3, and the bottom wall 10b is disposed so as to be biased upward by a coil spring 13. A second through-hole 11b allowing the inside and the outside of the float receiver to communicate with each other is formed in the float receiver 10 at the lower part of the sidewall 10a positioned under the through-hole 11a. When the bottom wall 10b is displaced upward, the lower part of the float 12 in the float receiver 10 communicates with an inlet 4 through the through-hole 11a. When the bottom wall 10b is displaced downward against the coil spring 13 by the force of the outside air flowing into the valve chamber 3 through an outlet 5, the lower part of the float 12 in the float receiver 10 communicates with the inlet 4 through the through-hole 11a and the second through-hole 11b. <P>COPYRIGHT: (C)2012,JPO&INPIT |
