Patent ID: 11879458
Assignee: GARDNER DENVER SCHOPFHEIM GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 16:
17. A rotary piston compressor/pump/blower, comprising:
a housing defining a working chamber;
an intake connection in fluid communication with the working chamber for furnishing fluid to the working chamber;
a pressure connection in fluid communication with the working chamber for guiding the fluid out of the working chamber;
a rotor assembly including
a first rotor rotatably arranged in a first working sub-chamber of the working chamber, and
a second rotor rotatably arranged in a second working sub-chamber of the working chamber and cooperating with the first rotor; and

a ventilation channel formed in the housing and in fluid communication with the working chamber via a ventilation channel opening for the introduction of fluid into the working chamber from outside the rotary piston compressor/pump/blower, the ventilation channel opening open at least in sections in a compression phase, and the ventilation channel opening closed by the first rotor in a pushing-out phase,
wherein the first rotor and the second rotor, prior to the compression phase, are configured to limit a common working space in the working chamber in a common working-space phase, wherein the ventilation channel opening is closable by the first rotor and dead space between the first rotor and the second rotor is spatially separate in relation to the common working space in the common working-space phase.