MAGNUS TYPE WIND POWER GENERATOR

• US 20150061294A1
• Filed: 09/01/2013
• Published: 03/05/2015
• Est. Priority Date: 09/01/2013
• Status: Active Grant

• Current Assignee: Hamid Reza Kheirandish
• Original Assignee: Hamid Reza Kheirandish
• Inventors: Kheirandish, Hamid Reza
• Granted Patent: US 9,273,666 B2
• Time in Patent Office: Days
• US Class Current: 290/55
• CPC Class Codes: F03D 1/0601 using the Magnus effect
• CPC Class Codes: Y02B 10/30 Wind power
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction

Abstract

A Magnus type wind power generator (A) comprising a horizontal rotary shaft (3) for transmitting torque to a power generating mechanism (2), rotary columns (5), flow directing plane (7) installed at main shaft (3), driving motors (15) for rotatively driving the respective rotary columns (5) around the axes thereof, which the relative action between rotation of each rotary column (5) and wind produces Magnus lift, which rotates the horizontal rotary shaft (3) so as to drive the power generating mechanism (2). Firstly, air flow directing plane (7), installed to direct flow to the low pressure area so as to cause another delay and eventually increase the Magnus lift. Secondly, the crossed spiral on the surface of the cylinder (6) provided to generate more air flow in three directions upon the rotary cylinder (5) increases the Magnus force.

Claims

1. - A Magnus type wind power generator comprising horizontal rotary shaft that transmits a rotation torque to a power generating mechanism, a required number of rotary columns that are disposed radially from said horizontal rotary shaft, and driving motors that rotatively drive said respective rotary columns about axes thereof, and a required number of flow directing planes are attached to a back of said horizontal rotary shaft in a predetermined position from said horizontal rotary shaft, wherein Magnus lift is generated by interactions among rotations of said respective rotary columns and said flow directing planes;

and wind power rotates said horizontal rotary shaft to drive said power generating mechanism, wherein said Magnus lift generated by interactions between said rotations of said respective rotary columns and said flow directing planes is increased by generating air flow upon an outer peripheral surface of said rotary columns and said flow directing planes;

therefore increasing a rotation torque of said horizontal rotary shaft which drives said power generation mechanism and increasing power generation efficiency of a wind power generator in a wind speed range from low wind speed to relatively high wind speed;

wherein said air flow directing planes are installed in 135°

with respect to horizon in half-planes or airfoils, respective to said back of said rotary columns;

therefore increasing said Magnus lift and reducing wind noise;

wherein said wind power generator further comprises wind power generator caps comprising diameters larger than of a diameter of said rotary columns and wherein said wind power generator caps are installed in an extreme end of said columns.

2. - The Magnus type wind power generator according to claim 1, wherein said air flow directing planes generate at least two air flow components parallel with an axis of said rotary columns upon said outer peripheral surface of said rotary columns.

3. - The Magnus type wind power generator according to claim 2, wherein said air flow directing planes generate two air flow components parallel with an axis of said rotary column and in a direction departing from said horizontal rotary shaft upon said outer peripheral surface of said rotary columns.

4. - The Magnus type wind power generator according to claim 2, wherein said air flow directing planes generate two air flow components parallel with an axis of said rotary column and in a direction towards said horizontal rotary shaft upon said outer peripheral surface of said rotary columns when said wind power generator caps are installed on said columns.

5. - The Magnus type wind power generator according to claim 3, said air flow directing planes are formed by installing said flow directing planes in a back of said rotary columns and fin members upon said outer peripheral surface of said rotary columns.

6. - The Magnus type wind power generator according to claim 5, wherein more air is directed upon a surface of said rotary columns towards high pressure area, without increasing a diameter or rotational speed of said horizontal rotary shaft and therefore said Magnus lift effect is increased when said flow directing planes are installed on said back of said rotary columns.

7. - The Magnus type wind power generator according to claim 6;

further comprising a bent/inclined plate installed at an extreme end of said airfoils;

wherein at a back of said extreme end a speed of flow is near zero, thus pressure reaches its highest and wherein a front portion of said inclined plane on a way of said air flow has maximum speed and minimum pressure, thus again said Magnus lift is increased.

8. - The Magnus type wind power generator according to claim 7, wherein said rotation speed of said rotary columns can be adjusted between high and low;

and therefore electric power can be generated while said rotation speed of said rotary columns fluctuates according to said direction and wind speed of natural wind, and therefore said rotation speed of said rotary columns increases thereby increasing lift of said rotary columns under a normal condition, to contract said rotary columns to reduce an area to receive said wind thereby preventing a support base from being destructed, and preventing said rotary columns from being damaged upon a strong wind.

9. - The Magnus type wind power generator according to claim 8;

wherein less number of driving motors than a required number of said rotary columns are used to drive rotatively said respective rotary columns simultaneously and therefore electric power used to drive said driving motors is reduced, thereby increasing said power generation efficiency of said wind power generator.

10. - The Magnus type wind power generator according to claim 9, wherein said flow directing planes installed in said back of said rotary columns can be in different shapes including defuse, airfoil etc.

11. - The Magnus type wind power generator according to claim 10, wherein said flow directing planes can be installed in different angles in said back of said rotary columns.

12. - The Magnus type wind power generator according to claim 11, wherein said fin members serving as said air flow directing planes comprises a rib in a crossing spiral shape formed upon said outer peripheral surface of said rotary columns.

13. - The Magnus type wind power generator according to claim 12, wherein number of said flow directing planes can be less than said number of the said rotary columns.