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ROTARY COMPRESSOR
申请公布号：JPS62153587(A)
申请号：JP19850293105
申请日期：1985.12.27
申请公布日期：1987.07.08
发明人：IRIE KAZUHIRO
分类号：F04C18/344;F01C21/08
主分类号：F04C18/344
摘要：PURPOSE:To prevent vanes from chattering, by forming, in a rear side block, a second coolant gas passage which may connect between a gas discharge system and a damper hole and between the former and a vane back pressure chamber when gas is fed into a first coolant gas passage. CONSTITUTION:A first coolant gas passage 19 and a second coolant gas passage 32 are formed in a back pressure change-over valve 31 in a compressor 30. The coolant gas passage 32 is formed in a rear side block 4 such that the second coolant gas passage 32 may connect a coolant gas discharge system with a damper hole 16 and a vane back pressure chamber 12 when coolant gas 14 is fed into the first coolant gas passage 19. Accordingly, it is possible to coolant gas of a high discharge pressure may be fed to the vane back pressure chamber to prevent insufficient back pressure.
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