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US 11,499,569 B2Granted
Mixed-flow compressor with counter-rotating diffuser
AssigneeCarrier Corporation
InventorsMichael M. Joly, Chaitanya Vishwajit Halbe, William T. Cousins, Vishnu M. Sishtla
Life of this patent
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Abstract
A compressor includes a housing. An impeller is located within the housing and rotatable about an impeller axis in a first rotational direction. A rotor section is rotatable about the impeller axis in a second rotational direction opposite the first rotational direction.
Claims18
A compressor comprising:
- a housing;
- an impeller located within the housing and rotatable about an impeller axis in a first rotational direction;
- and
- a rotor section rotatable about the impeller axis in a second rotational direction opposite the first rotational direction, wherein the rotor section includes a rotor having a plurality of rotor blades forming at least one row of rotor blades and an outlet of the impeller is immediately upstream of an inlet to the at least one row of rotor blades and the at least one row of blades includes an upstream row of blades having a curvature in the second rotational direction and a downstream row of blades having a curvature in the first rotational direction.
1 more element
A method of operating a compressor comprising the steps of:
- rotating an impeller in a first rotational direction with an impeller motor to draw refrigerant into an inlet of the compressor;
- rotating a rotor section downstream of the impeller in a second rotational direction opposite the first rotational direction, wherein the rotor section includes a rotor having a plurality of rotor blades forming at least one row of rotor blades and an outlet of the impeller is immediately upstream of an inlet to the at least one row of rotor blades and the at least one row of blades includes an upstream row of blades having a curvature in the second rotational direction and a downstream row of blades having a curvature in the first rotational direction;
- and
- directing the refrigerant from the rotor section to a compressor outlet.
1 more element
Dependencies are inferred from the claim text.