IMPELLER FOR A CENTRIFUGAL COMPRESSOR
First Claim
1. An impeller rotatable in a direction of rotation in a centrifugal compressor having an intake ring, the impeller comprising:
- a back plate including a hub portion; and
a plurality of blades extending from the backplate, each blade including a leading edge that extends radially outward along a non-linear path from adjacent the hub portion.
3 Assignments
0 Petitions
Accused Products
Abstract
An impeller rotatable in a direction of rotation in a centrifugal compressor including an intake ring. The impeller includes a back plate having a shaft portion and a plurality of blades. Each blade extends from the back plate and includes an inducer portion adapted to draw fluid into the impeller and including a leading edge and an exducer portion adapted to discharge the fluid from the impeller and including a trailing edge. A blade pressure side is defined between the leading edge, the trailing edge, the back plate, and a blade tip. The pressure side is convex from the back plate to the blade tip. A blade suction side opposite the pressure side is defined between the leading edge, the trailing edge, the back plate, and the blade tip. The suction side being concave from the back plate to the blade tip.
38 Citations
29 Claims
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1. An impeller rotatable in a direction of rotation in a centrifugal compressor having an intake ring, the impeller comprising:
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a back plate including a hub portion; and
a plurality of blades extending from the backplate, each blade including a leading edge that extends radially outward along a non-linear path from adjacent the hub portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. The impeller of claim 10, wherein each of the blades defines a blade mid-line wrap of between about −
- 65 degrees to −
90 degrees.
- 65 degrees to −
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11. An impeller rotatable in a direction of rotation in a centrifugal compressor including an intake ring, the impeller comprising:
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a back plate including a hub portion; and
a plurality of blades, each extending from the back plate and including;
an inducer portion adapted to draw fluid into the impeller and including a leading edge, an exducer portion adapted to discharge the fluid from the impeller and including a trailing edge;
a blade pressure side defined between the leading edge, the trailing edge, the back plate, and a blade tip, the pressure side being convex from the back plate to the blade tip; and
a blade suction side opposite the pressure side and defined between the leading edge, the trailing edge, the back plate, and the blade tip, the suction side being concave from the back plate to the blade tip. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A centrifugal compressor comprising:
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an impeller rotatable in a direction of rotation about an axis and including a plurality of blades that define an inducer portion adapted to draw in fluid during rotation and an exducer portion adapted to discharge the fluid during rotation, each of the blades including a leading edge, a trailing edge, a platform portion, and a blade tip; and
an intake ring having a seal surface disposed adjacent the blade tip to define a clearance gap, the seal surface and the blade tip arranged such that the gap is non-uniform when measured normal to the seal surface. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification