KAMAN VORTEX STREET GENERATOR

• US 20110273032A1
• Filed: 07/22/2011
• Published: 11/10/2011
• Est. Priority Date: 08/04/2009
• Status: Active Grant

• Current Assignee: Ming Lu
• Original Assignee: Ming Lu
• Inventors: LU, Ming
• Granted Patent: US 8,638,002 B2
• Time in Patent Office: Days
• US Class Current: 310/10
• CPC Class Codes: F03D 5/00 Other wind motors controlling thereof F03D7/00
• CPC Class Codes: F05B 2240/94 on a movable wheeled structure
• CPC Class Codes: F15D 1/02 in pipes or conduits
• CPC Class Codes: H02K 35/04 with moving coil systems and stationary magnets
• CPC Class Codes: H02K 7/1876 with reciprocating, linearly oscillating or vibrating parts
• CPC Class Codes: H02K 7/1892 Generators with parts oscillating or vibrating about an axis
• CPC Class Codes: Y02E 10/70 Wind energy

Abstract

A Karman vortex street generator including a shell (1), permanent magnets (3, 6), a vortex generating body (4), and a metal winding (5). Both ends of the shell (1) are respectively provided with an inlet end (2) and an outlet end (7). The permanent magnets (3, 6) are respectively located on two corresponding surfaces inside the shell (1), and the N pole of the permanent magnet on one surface corresponds to the S pole of the permanent magnet on the other surface so as to form a magnet field in the shell (1). The vortex generating body (4) is provided in the vertical center position near the inlet end (2) in the shell (1) so as to generate a Karman vortex when a fluid flows. The metal winding (5) located in the magnet field is able to regularly cut magnetic lines of force under the action of the Karman vortex and makes magnetic flux passing through the metal winding (5) change so as to generate an induction current.

Claims

1. A Karman vortex street generator, comprising:

a shell with two opened ends, inlet end and outlet end;

a permanent magnates, whose N pole and S pole are located on the corresponding surfaces of said shell, forming the magnet field;

a vortex generating body inside said shell producing the Karman vortex street when fluid passing by; and

a metal winding cutting the magnetic lines of force under the action of the Karman vortex street to produce induced current.

2. The Karman vortex street generator of claim 1, wherein the permanent magnates, whose height, h, follows the formula

3. The Karman vortex street generator of claim 2, wherein the vortex generating body is made of elastic materials and two ends of which are mounted on the permanent magnates or shell.

4. The Karman vortex street generator of claim 3, wherein the vortex generating body is hollowed and thin-shelled body, on which the metal winding is smoothly winded interior or external surface.

5. The Karman vortex street generator of claim 2, wherein the vortex generating body is rigid body, which is connected with the shell by the flexible upper and lower supporting.

6. The Karman vortex street generator of claim 5, wherein the flexible upper and lower supporting compose of springs.

7. The Karman vortex street generator of claim 5, wherein the Vortex generating body is rigid, hollowed, and thin-shelled body, on which said metal winding is smoothly winded interior or external surface.

8. The Karman vortex street generator of claim 6, wherein the Vortex generating body is rigid, hollowed, and thin-shelled body, on which said metal winding is smoothly winded interior or external surface.

9. The Karman vortex street generator of claim 1, wherein the two corresponding surfaces are behind said vortex generating body, between which the magnet field is formed and the metal winding, with rotating function around a shaft is located.

10. The Karman vortex street generator of claim 9, wherein the vortex generating body and permanent magnates have a distance large than or equal to 2L.

11. The Karman vortex street of claim 1, wherein the shell has a circular or polygon sectional shape.

12. The Karman vortex street generator system includes at least two Karman vortex generator of claim 1.