Centrifugal Impeller With Controlled Force Balance
AssigneeWoodward Governor Company
InventorDmitriy Baryshnikov
Life of this patent
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Abstract
An impeller for a centrifugal pump that includes a disk-shaped shroud having a central axis, a front surface, a rear surface, and a circular perimeter, and a hub at the center of the shroud, the hub having an axial bore. The impeller further includes a first set of vanes on the front surface of the shroud, the first set of vanes extending radially inward from the perimeter towards the hub, a second set of vanes on the rear surface of the shroud, the second set of vanes extending radially inward from the perimeter towards the hub, a balancing area on the rear surface of the shroud, the balancing area extending radially outward from the hub, and a number of openings in the shroud, the number of openings configured to allow a fluid to pass from one side of the shroud to the other.
Claims30
An impeller for a centrifugal pump comprising:
- a disk-shaped shroud having a central axis, a front surface, a rear surface, and a circular perimeter;
- a hub at the center of the shroud, the hub having an axial bore;
- a first plurality of vanes on the front surface of the shroud, the first plurality of vanes extending radially inward from the perimeter towards the hub;
- a second plurality of vanes on the rear surface of the shroud, the second plurality of vanes extending radially inward from the perimeter towards the hub
- a balancing area on the rear surface of the shroud, the balancing area extending radially outward from the hub;
- and
- a plurality of openings in the shroud, the plurality of openings configured to allow a fluid to pass from one side of the shroud to the other.
A centrifugal pump comprising:
- a driveshaft configured to be rotated;
- a pump casing comprising:
- an inlet;
- an outlet;
- and a chamber disposed between the inlet and outlet;
- an impeller disposed in the pump casing and attached to the driveshaft, the impeller comprising;
- a circular shroud having an central axis, a front surface, a rear surface, and a circular perimeter;
- an eye at the center of the shroud, the eye having an axial bore;
- a first set of vanes on the front surface of the shroud, the first set of vanes extending radially inward from the perimeter towards the hub;
- a second set of vanes on the rear surface of the shroud, the second set of vanes extending radially inward from the perimeter towards the hub a balancing region on the rear surface of the shroud, the balancing region extending radially outward from the hub;
- and
- a plurality of openings in the shroud, the plurality of openings configured to allow a fluid to pass from one side of the shroud to the other.
Dependencies are inferred from the claim text.