Patent ID: 11873839
Assignee: HAMILTON SUNDSTRAND CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 8:
9. A compressor comprising:
a compressor housing comprising:
an inlet;
an outlet; and
a duct connecting the inlet to the outlet;

an impeller within the duct in the compressor housing; and
a variable vaneless diffuser within the duct and downstream from the impeller, the
variable vaneless diffuser comprising:
a shroud;
a backing plate;
a divider plate adjacent to the backing plate such that the divider plate is between the shroud and the backing plate;
a floor plate adjacent to the shroud such that the floor plate is between the shroud and the divider plate, wherein the floor plate is movable relative to the divider plate;
a floor cavity defined by the floor plate and the shroud, wherein air at servo pressure is supplied to the floor cavity to move the floor plate relative to the divider plate, and wherein the air at servo pressure is a mixture of ambient pressure air and compressed pressure air mixed by a servo pressure source upstream from the floor cavity;
a plurality of standoffs formed on the divider plate; and
a plurality of clearance slots formed in the floor plate, wherein the plurality of standoffs and the plurality of clearance slots define a flow path for fluid flow, the flow path having an area which is variable through movement of the floor plate relative to the divider plate.