Centrifugal or mixed-flow compressor including aspirated diffuser
AssigneeCarrier Corporation
InventorsMichael M. Joly, Chaitanya Vishwajit Halbe, Vishnu M. Sishtla
Life of this patent
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Abstract
A compressor including a casing and an impeller arranged within the casing. The impeller is rotatable about an axis. A diffuser section is arranged within the casing. The diffuser section is positioned downstream from an outlet of the impeller and includes a first set of vanes disposed circumferentially about the diffuser section and a second set of vanes disposed circumferentially about the diffuser section. At least one vane in the second set of vanes includes an aspiration slot.
Claims20
A compressor comprising:
- a casing;
- an impeller arranged within the casing, the impeller being rotatable about an axis;
- and
- a diffuser section arranged within the casing, the diffuser section being positioned downstream from an outlet of the impeller, and including a first set of vanes disposed circumferentially about the diffuser section and a second set of vanes disposed circumferentially about the diffuser section, at least one vane in the second set of vanes including an aspiration slot.
A method for reducing boundary layer separation in a compressor, the method comprising:
- aspirating a flow from a suction side of a vane in a diffuser section to one of a tip of the vane and a radially inward hub of the vane through an aspiration slot, wherein the aspiration slot is disposed at a primary flow separation location.
A vane for a compressor, wherein the vane comprises:
- a leading edge connected to a trailing edge via a pressure side surface and a suction side surface;
- and
- an aspiration slot disposed in the suction side surface, wherein the aspiration slot is a radially aligned intrusion into the suction side surface.
Dependencies are inferred from the claim text.