Fluid pump/generator with integrated motor and related stator and rotor and method of pumping fluid

• US 7,021,905 B2
• Filed: 11/06/2003
• Issued: 04/04/2006
• Est. Priority Date: 06/25/2003
• Status: Active Grant

• Current Assignee: Advanced Energy Conversion LLC (Systematic Power Solutions LLC)
• Original Assignee: Advanced Energy Conversion LLC (Systematic Power Solutions LLC)
• Inventors: Torrey, David A., Kirchner, Edward C.
• Primary Examiner(s): Koczo, Jr., Michael
• Application Number:
  US10/702,354
• Publication Number:
  US 20040265153A1
• Time in Patent Office: 880 Days
• Field of Search: 417/352, 417/353, 417/355, 417/356, 417/366, 290/52, 310/54, 310/59, 310/63
• US Class Current: 417/356
• CPC Class Codes: F04C 15/008 Prime movers
• CPC Class Codes: F04C 2/18 with similar tooth forms F04C2/16 takes precedence
• CPC Class Codes: F04D 13/064 Details of the magnetic circuit
• CPC Class Codes: F04D 3/00 Axial-flow pumps priming or boosting F04D9/00

Abstract

A fluid pump integrated with a motor, a fluid pump/generator device, a rotor for a fluid pump/generator device, a stator for a fluid pump/generator device and a method for pumping fluid are disclosed. Specifically, a fluid pump includes a motor rotor having a plurality of magnetic vanes that electromagnetically interact with a plurality of magnetic poles of the motor stator such that the rotor functions simultaneously as the impeller for the pump and rotor for the motor, with fluid flowing through channels on the rotor. Pump and motor are tightly integrated into one single device so that the number of parts is reduced, total size is compressed, reliability of the device is improved, and cost efficiency is increased. In addition, the use of magnetic vanes for propelling fluid improves motor efficiency. Further, the fluid flow is used to directly cool the pump/generator device, which reduces energy consumption.

Claims

1. A fluid pump/generator comprising:

a motor including;

a stator having a plurality of magnetic poles, a plurality of winding channels between adjacent magnetic poles, each winding channel allowing fluid flow therethrough, and at least one phase winding; and

a rotor having a plurality of magnetic vanes for electromagnetically interacting with the plurality of magnetic poles, and a fluid carrying channel between adjacent magnetic vanes.

2. The fluid pump/generator of claim 1, wherein the stator and the rotor each include a plurality of layers including magnetic material.

3. The fluid pump/generator of claim 2, wherein the plurality of magnetic vanes each have a curved shape for propelling the fluid.

4. The fluid pump/generator of claim 3, wherein each layer of the rotor is offset relative to an adjacent layer to form the curved shape of each magnetic vane.

5. The fluid pump/generator of claim 1, wherein the plurality of magnetic vanes are axially aligned relative to one another.

6. The fluid pump/generator of claim 1, wherein each magnetic vane includes a face width and a base width, wherein the face width is less than the base width.

7. The fluid pump/generator of claim 1, wherein the plurality of magnetic vanes propel the fluid axially along the rotor.

8. The fluid pump/generator of claim 1, wherein the magnetic poles are axially aligned relative to one another.

9. The fluid pump/generator of claim 1, further comprising a set of axial blade structures extending from the rotor.

10. The fluid pump/generator of claim 1, further comprising an inlet housing for directing fluid to the motor, the inlet housing including an outer annulus structure having a passage therethrough, and a nose structure in the passage coupled to the outer annulus by a plurality of vane structures.

11. The fluid pump/generator of claim 1, wherein each vane structure has one of a straight airfoil and a cambered shape.

12. The fluid pump/generator of claim 1, further comprising a motor housing for enclosing the motor.

13. The fluid pump/generator of claim 12, further comprising means for passing the phase winding through the housing to an electronic controller.

14. The fluid pump/generator of claim 1, wherein the stator further comprises at least one bearing seat, each bearing seat for holding a rotor bearing for rotatably supporting the rotor.

15. The fluid pump/generator of claim 1, further comprising an outlet housing for directing fluid from the motor, wherein the outlet housing includes an outer annulus structure having a passage therethrough and a tail structure in the passage, the tail structure coupled to the outer annulus structure by a plurality of vane structures, each vane structure having a curved shape.

16. The fluid pump/generator of claim 1, further comprising a flow inducer attached at an inlet end of the rotor.

17. The fluid pump/generator of claim 16, further comprising a flow impeller attached between the flow inducer structure and the rotor.

18. The fluid pump/generator of claim 1, further comprising a flow impeller attached at an in let end of the rotor.

19. The fluid pump/generator of claim 1, further comprising a first flow impeller attached at an outlet end of the rotor.

20. The fluid pump/generator of claim 19, further comprising a flow inducer attached at an inlet end of the rotor.

21. The fluid pump/generator of claim 20, further comprising a second flow impeller attached between the flow inducer structure and the rotor.

22. The fluid pump/generator of claim 1, further comprising a plurality of cooling channels extending through the stator, wherein the plurality of cooling channels communicate with fluid flow and allow fluid flow through the stator.

23. The fluid pump/generator of claim 1, further comprising at least two adjacent rotors, wherein magnetic vanes of one rotor mesh with fluid carrying channels of the other rotor.

24. The fluid pump/generator of claim 23, wherein the at least two rotors counterrotate with respect to one another and move fluid tangentially around an outer diameter of each of the at least two rotors.

25. A rotor for a fluid pump/generator, the rotor comprising:

a plurality of magnetic layers having a plurality of magnetic vanes formed in an exterior surface thereof; and

a plurality of fluid carrying channels between adjacent magnetic vanes;

wherein each magnetic vane includes a face width and a base width, wherein the face width is less than the base width.