Multi-piston bladeless wind turbine

Patent metadata

Field	Value
Publication number	US-10815965-B2
Application number	US-202016776489-A
Country	US
Kind code	B2
Filing date	Jan 29, 2020
Priority date	Feb 14, 2019
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

The multi-piston bladeless wind turbine creates electrical energy using hydraulically connected pistons. The system may include a disk, a small piston in fluid communication with a large piston, and a crankshaft attached to the large piston. The disk transfers forces from the wind to the small piston. Hydraulic fluid then transfers the forces to the larger piston. When the disk and associated small piston have been forced to the end of their stroke by the wind, a gate in the disk is opened to reduce wind force on the disk by allowing air to travel through the disk. Subsequently, the disk and associated small piston are pushed back to the beginning of the stroke by the pressure created by the large piston's weight. This process is repeated by closing the gate in the disk. A crankshaft powering an electric generator is turned by the movement of the large piston.

First claim

I claim:

1. A multi-piston bladeless wind power generator, comprising:
a sealed hydraulic system having at least one input cylinder, at least one output cylinder, and a conduit extending between the at least one input cylinder and the at least one output cylinder;
for the at least one input cylinder, a corresponding input piston constrained to reciprocate in and hydraulically seal the input cylinder, the input piston having an input shaft extending therefrom out of the corresponding at least one input cylinder;
for the at least one output cylinder, a corresponding output piston constrained to reciprocate in and hydraulically seal the output cylinder, the output piston having an output shaft extending therefrom out of the corresponding at least one output cylinder;
hydraulic fluid disposed between each the input piston and the output piston;
a wind collector attached to the input shaft, the wind collector having a relief valve selectively switchable between a closed position in which full wind pressure is exerted against the input shaft and an open position in which at least some of the wind pressure is bled to outside atmosphere, wherein the wind collector comprises a frustoconical wind disk having a base, the base includes an open window defined therein, the relief valve comprising a gate linearly slidable between a position completely covering and closing the open window, thereby defining the closed position of the relief valve, and a position leaving the window at least partial uncovered for passage of wind therethrough, thereby defining the open position of the relief valve; and
a sensor control system connected to the relief valve for switching the relief valve between the open and closed positions in response to sensor signals relating to position of at least one of the pistons to maintain reciprocation of the pistons;
wherein wind pressure against the wind collector is converted to mechanical power by reciprocation of the output shaft of the at least one output piston.

2. The multi-piston bladeless wind power generator as recited in claim 1 , further comprising:
a linear-to-rotary actuator connected to the output shaft; and
an electrical generator connected to the linear-to-rotary actuator, whereby reciprocation of the output shaft is converted to electrical energy.

3. The multi-piston bladeless wind power generator as recited in claim 2 , wherein said linear-to-rotary actuator comprises a crankshaft.

4. The multi-piston bladeless wind power generator as recited in claim 1 , further comprising a wind turbine mounted behind the window defined in the wind disk.

5. The multi-piston bladeless wind power generator as recited in claim 4 , further comprising a mesh screen covering the window.

6. The multi-piston bladeless wind power generator as recited in claim 1 , wherein said output piston has a greater surface area than said input piston.

7. The multi-piston bladeless wind power generator according to claim 1 , wherein:
said at least one input cylinder comprises a plurality of input cylinders, each of the input cylinders having a corresponding one of the input pistons constrained to reciprocate in and hydraulically seal the input cylinder, each of the input pistons having the input shaft extending therefrom out of the corresponding input cylinder, the input shafts being attached to said wind collector; and
said at least one output cylinder consists of one output cylinder.

8. The multi-piston bladeless wind power generator according to claim 1 , wherein:
said at least one output cylinder comprises a plurality of output cylinders, each of the output cylinders having a corresponding one of the output pistons constrained to reciprocate in and hydraulically seal the corresponding output cylinder, each of the output pistons having the output shaft extending therefrom out of the corresponding output cylinder; and
said at least one input cylinder consists of one input cylinder.

9. The multi-piston bladeless wind power generator according to claim 8 , further comprising:
a plurality of linear-to-rotary actuators, each of the output shafts being connected to a corresponding one of the linear-to-rotary actuators, respectively; and
a plurality of electrical generators, each of the linear-to-rotary actuators being connected to a corresponding one of the generators, respectively, whereby reciprocation of each of the output shafts is converted to electrical energy.

10. The multi-piston bladeless wind power generator according to claim 9 , wherein each said linear-to-rotary actuator comprises a crankshaft.

11. The multi-piston bladeless wind power generator according to claim 8 , further comprising a plurality of flow valves disposed in the conduit for selectively controlling flow of the hydraulic fluid between the conduit and the plurality of output cylinders.

Assignees

• Univ King Saud

Inventors

• Haidar Zeyad Abdulwahid Ghaleb

Classifications

• F03D5/06 Primary

  the wind-engaging parts swinging to-and-fro and not rotating · CPC title

• F03D7/04

  Automatic control; Regulation · CPC title

• Y02E10/70

  Wind energy · CPC title

• Y02E60/16

  Mechanical energy storage, e.g. flywheels or pressurised fluids · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title