Rotary apparatus

摘要

A rotary machine ( 10 ) comprises an inner housing ( 12 ) having valving means ( 14 ) which includes a shaft ( 15 ) for directing working fluid through the machine ( 10 ) and, an outer housing ( 16 ) within which the inner housing resides. A working chamber ( 18 ) is defined between the inner and outer housings ( 12 and 16 ). A plurality of gates ( 20 ) are supported by the inner housing and are swingable along their respective longitudinal axis between a sealing position in which the gates form a seal against surface ( 22 ) of outer housing ( 16 ) and a retracted position in which the gates ( 20 ) lie substantially against surface ( 24 ) of the housing ( 12 ).