Impeller for a magnetic pump and novel impeller housing design

• US 20110176943A1
• Filed: 06/12/2009
• Published: 07/21/2011
• Est. Priority Date: 06/12/2009
• Status: Active Grant

• Current Assignee: Gulfstream Inc.
• Original Assignee: Gulfstream Plastics Limited
• Inventors: Alexander, Christopher, Tran, Minh Sang
• Granted Patent: US 8,366,418 B2
• Time in Patent Office: Days
• US Class Current: 417/423.1
• CPC Class Codes: F01D 5/141 Shape, i.e. outer, aerodynamic form F01D5/148 - F01D5/20 take precedence; blade construction F01D5/147
• CPC Class Codes: F04D 13/0633 Details of the bearings
• CPC Class Codes: F04D 29/048 magnetic; electromagnetic
• CPC Class Codes: F04D 29/24 Vanes

Abstract

The invention is a magnetically driven pump with a floating impeller and driven magnet, and the invention includes an impeller surface having geometric figures acting as the pumping bodies.

Claims

1. A magnetic driven pump said pump comprising:

a pump body having a front and a rear portion, and a pumping chamber there between, an inlet and an outlet disposed in said pump body, an impeller and a driven pump magnet coupled to form a rotative body, said rotative body having a rotation center adjacent to said interior face of said rear portion, said rotative body having an axis of rotation, said rotative center positioned on said axis of rotation, said interior face of said rear portion having a rotation support, where said rotative body is pivotably supported by said rotation support.

2. The magnetic driven pump of claim 1 wherein said rotation support is detached from said rotation center.

3. The magnetic driven pump of claim 2 wherein said rotation support further comprises an opening through said rear portion, allowing fluid communication between said interior portion and an environment exterior said pump body.

4. The magnetic driven pump of claim 3 wherein said rotation center protrudes from said rotative body and is substantially hemispherically shaped, having a diameter greater than the diameter of said rotation support opening.

5. The magnetic driven pump of claim 2 having a magnet retainer housing having a front surface, a rear surface, and an interior volume there between, said magnet fixedly positioned in said interior volume, said impeller positioned on said exterior of said front surface of said magnet retainer housing, said rotation center positioned on said exterior of said rear surface of said magnet retainer housing.

6. The magnetic driven pump of claim 2 wherein said rotation support is a depression in said interior face of said rear portion having a first diameter and a first depth, and said rotation center is a projection terminating in a top having a substantially hemispherical shape, said rotation center has a length greater than said first depth, and said diameter of said rotation center is sufficiently smaller then said first diameter to allow said rotative body to pivot in said rotation support.

7. A magnetic driven pump said pump comprising:

a pump body having a front and a rear portion, and a pumping chamber there between, an inlet and an outlet disposed in said pump body, an impeller and a driven pump magnet coupled to form a rotative body, said rotative body being detached from said pump body, said rotative body adapted to pivot in said pump housing.

8. The magnetic driven pump of claim 7 wherein said rear portion of said pump body has an opening there through allowing fluid communication between said interior portion and an environment exterior to said pump body.

9. The magnetic driven pump of claim 8 wherein said rotative body has an axis of rotation centered on said opening.

10. A rotatable pump impeller for use in a centrifugal pump comprising:

An impeller surface;

An axial center on said impeller surface, said impeller adapted for coupling to a rotatable driving means for rotation about said axial center;

at least three geometric figures on said impeller surface, each geometric figure having a perimeter, each said perimeter defining an area interior to said perimeter, said perimeter being raised above said impeller surface and said area interior to said perimeter, each geometric figure offset from said axial center and from each other geometric figure.

11. The impeller of claim 10 wherein each said geometric figure is substantially closed.

12. The pump impeller of claim 11 wherein each perimeter comprises a proximal portion closest to said axial center, a distal portion furthest from said axial center, a trailing portion between said proximal and distal portions clockwise from said proximal portion, and a leading portion of said raised perimeter between said proximal and distal portions clockwise from said distal portion;

wherein said leading portion has a first curvature and said trailing portion has a second curvature, and said first and second curvatures are opposed.

13. An impeller according to claim 12, wherein said geometric figures have a substantially circular configuration.

14. An impeller according to claim 12, wherein said geometric figures have a substantially teardrop configuration.

15. An impeller according to claim 12, wherein said geometric figures have a substantially oval configuration.

16. An impeller according to claim 12, wherein each said raised perimeter monotonically decreases from said proximal to the distal portion.

17. The impeller of claim 12 wherein each of said geometric figures are substantially congruent to one another.

18. The impeller of claim 16 wherein each said geometric figures are equally distributed about a perimeter of said impeller.

19. An impeller according to claim 12, wherein said curvature on said trailing portion is a mirror image of the curvature on said leading portion.

20. An impeller according to claim 16, wherein said monotonically decreasing leading portion is a mirror image of said monotonically decreasing proximal portions.