Two-stage centrifugal compressor
First Claim
Patent Images
1. A compressor (22) comprising:
- a housing (50);
a shaft (70);
a plurality of bearings (66, 67, 68, 74, 76) mounting the shaft to the housing for relative rotation about an axis (500);
a motor (52), having;
a rotor (64) mounted on the shaft; and
a stator (62);
a first impeller (54A) mounted the shaft to a first side of the motor; and
a second impeller (54B) mounted the shaft to a second side of the motor,wherein;
the first impeller is an open impeller;
the second impeller is a shrouded impeller; and
the plurality of bearings comprises a magnetic thrust bearing (68).
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Abstract
A compressor (22) comprises: a housing (50); a shaft (70); a plurality of bearings (66, 67, 68, 74, 76) mounting the shaft to the housing for relative rotation about an axis (500); and a motor (52). The motor has: a rotor (64) mounted on the shaft; and a stator (62). A first impeller (54A) is mounted the shaft to a first side of the motor. A second impeller (54B) is mounted the shaft to a second side of the motor. The first impeller is an open impeller and the second impeller is a shrouded impeller.
21 Citations
14 Claims
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1. A compressor (22) comprising:
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a housing (50); a shaft (70); a plurality of bearings (66, 67, 68, 74, 76) mounting the shaft to the housing for relative rotation about an axis (500); a motor (52), having; a rotor (64) mounted on the shaft; and a stator (62); a first impeller (54A) mounted the shaft to a first side of the motor; and a second impeller (54B) mounted the shaft to a second side of the motor, wherein; the first impeller is an open impeller; the second impeller is a shrouded impeller; and the plurality of bearings comprises a magnetic thrust bearing (68). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification