Axial and downstream compressor assembly
AssigneeCarrier Corporation
InventorsMichael M. Joly, Chaitanya Vishwajit Halbe, Vishnu M. Sishtla, William T. Cousins
Life of this patent
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Abstract
A refrigerant compressor assembly (20A, 20B, 20C) includes an axial compressor (22B, 22C, 22) that includes at least one axial stage. A downstream compressor (24) is located fluidly downstream of the axial compressor (22B, 22C, 22) and includes one of a mixed-flow impeller (46) or a centrifugal impeller (96). At least one motor (26, 27) is in driving engagement with at least one of the axial compressor (22B, 22C, 22) and the downstream compressor (24).
Claims16
A refrigerant compressor assembly comprising:
- an axial compressor including at least one axial stage, wherein the at least one axial stage includes a first vaneless stage immediately upstream of a second vaneless stage, and wherein the first vaneless stage is configured to rotate in a first rotational direction and the second vaneless stage is configured to rotate in a second rotational direction;
- a downstream compressor located fluidly downstream of the axial compressor and including one of a mixed-flow impeller or a centrifugal impeller;
- at least one motor in driving engagement with the axial compressor and the downstream compressor, wherein the at least one motor is axially spaced from the mixed-flow impeller or the centrifugal impeller, and wherein that at least one motor includes a first motor for driving the first vaneless stage and the downstream compressor, and a second motor for driving the second vaneless stage.
A refrigerant compressor assembly comprising:
- an axial compressor including at least one axial stage, wherein the at least one axial stage includes a first vaneless stage immediately upstream of a second vaneless stage, and wherein the first vaneless stage is configured to rotate in a first rotational direction and the second vaneless stage is configured to rotate in a second rotational direction;
- a downstream compressor located fluidly downstream of the axial compressor and including one of a mixed-flow impeller or a centrifugal impeller;
- and
- at least one motor in driving engagement with at least one of the axial compressor and the downstream compressor, wherein that at least one motor includes a first motor for driving the first vaneless stage and a second motor for driving the second vaneless stage, and wherein the second motor drives the downstream compressor.
A method of operating a refrigerant compressor assembly comprising the steps of:
- compressing a refrigerant with an axial compressor including at least one axial stag;
- wherein the at least one axial stage includes at least a first vaneless stage and a second vaneless stage;
- compressing the refrigerant with a downstream compressor located fluidly downstream of the axial compressor and the downstream compressor includes one of a mixed-flow impeller or a centrifugal impeller;
- driving the axial compressor and the downstream compressor with at least one motor, wherein the at least one motor is axially spaced from the mixed-flow impeller or the centrifugal impeller;
- and
- wherein the at least one motor comprises at least a first motor and a second motor, and including driving the first vaneless stage and the downstream compressor in a first rotational direction with the first motor, and driving the second vaneless stage in a second rotational direction with the second motor.
A method of operating a refrigerant compressor assembly comprising the steps of:
- compressing a refrigerant with an axial compressor including at least one axial stage, and wherein the axial compressor includes at least a first vaneless stage and a second vaneless stage;
- driving the first vaneless stage in a first rotational direction with a first motor and driving the second vaneless stage in a second rotational direction with a second motor;
- and
- compressing the refrigerant with a downstream compressor located fluidly downstream of the axial compressor and the downstream compressor includes one of a mixed-flow impeller or a centrifugal impeller, and wherein the downstream compressor is driven by the second motor.
Dependencies are inferred from the claim text.