| 摘要 |
PURPOSE: A protector is provided to arrange valve bodies which open and close a channel according to over-rise of venting chamber temperature and compressing ratio. CONSTITUTION: A reacting member(42) installs many gas passages(41) in the edge direction of a sheet face(43) contacting with a channel(33a). The sheet face of the reacting member blocks the channel and receives first pressure from a venting chamber(8). However, when temperature of the venting chamber rises, the sheet face induces the reacting member to be deformed caused by heat of the sheet face or a housing. Due to the deformation of the reacting member, the gas of the venting chamber is delivered to a suction chamber(9). In other words, the gas is circulated through the channel, the gas passage of the reacting member, the housing and the suction chamber.
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