Bladeless wind turbine

Patent metadata

Field	Value
Publication number	US-10690114-B1
Application number	US-201916276509-A
Country	US
Kind code	B1
Filing date	Feb 14, 2019
Priority date	Feb 14, 2019
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

A bladeless wind turbine that 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. Consequently, 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 bladeless wind power generator, comprising:
a sealed hydraulic system having an input cylinder, an output cylinder, and a conduit extending between the input cylinder and the output cylinder;
an input piston constrained to reciprocate in and sealing the input cylinder, the input piston having an input shaft extending therefrom out of the input cylinder;
an output piston constrained to reciprocate in and sealing the output cylinder, the output piston having an output shaft extending therefrom out of the output cylinder;
hydraulic fluid disposed between the input piston and the output piston;
a wind collector attached to the input shaft, the wind collector having a relief valve 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; and
a sensor control system connected to the 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 output piston;
wherein said wind collector comprises a frustoconical wind disk having a base;
wherein the base of said frustoconical wind disk has an open window defined therein, said valve comprising a gate linearly slidable between a position completely covering and closing the open window, defining the closed position of said valve, and a position leaving the open window at least partial uncovered for passage of wind therethrough, defining the open position of said valve.

2. The bladeless wind power generator according to 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 bladeless wind power generator according to claim 2 , wherein said linear-to-rotary actuator comprises a crankshaft.

4. The bladeless wind power generator according to claim 1 , wherein said output piston has a greater surface area than said input piston.

5. The bladeless wind turbine according to claim 1 , further comprising:
a motor disposed in the base of the wind disk, the motor having a controller;
a linkage between the motor and the gate; and
position sensors disposed on the horizontally oriented bore adjacent the rest position and the retracted position, the controller actuating the motor to slide the gate between the open position in response to signals from the position sensors.

Assignees

• Univ King Saud

Inventors

• Haidar Zeyad Abdulwahid Ghaleb

Classifications

• F03D5/06

  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

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title

• F03C1/26

  adapted for special use or combined with apparatus driven thereby · CPC title