| 摘要 |
The rotary air compressor includes a rotor which rotates within a housing and controls communication through inlet and outlet ports provided on the housing. It compresses air communicated through the inlet port for delivery to the outlet port. The inlet and outlet ports are provided with check valves controlling communication through them. After the rotor rotates through a deadcenter position, the check valves in both the inlet and outlet ports are closed. The rotor then rotates into a position in which the apex seals carried by the rotor wipe across the inlet and outlet ports simultaneously, so opening a communication path bypassing the apex seals so that the pressure levels in the chambers across the rotor are equalised. As the rotor continues to rotate, air is compressed and communicated to the outlet port.
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