CENTRIFUGAL COMPRESSOR Russian patent published in 2006 - IPC F04D29/68 

FIELD: mechanical engineering; compressors.

SUBSTANCE: invention relates to centrifugal and mixed-flow compressors. Centrifugal compressor contains housing accommodating impeller with blades, bladeless diffuser, radial blade diffuser and antisurge device. The latter is made in form of ring space in compressor housing which communicates with passage part through holes, some holes being arranged lower in direction of flow, and others, upper in direction of flow. Ring space and holes are made in zone of outlet part of impeller. Holes are arranged circumferentially, and they communicate directly with interblade channels of impeller. Compressor provides reduction of zone of stall flow in interblade channel of impeller, equalizing flow at impeller outlet, reduction of radial component of flow velocity, reduction of braking pressure relative to flow, increase of absolute flow braking pressure.

EFFECT: increased efficiency of centrifugal compressor, its gas-dynamic stability and service life.

3 dwg