Inertial pneumatic wave energy device

Patent metadata

Field	Value
Publication number	US-12467428-B2
Application number	US-202418628704-A
Country	US
Kind code	B2
Filing date	Apr 6, 2024
Priority date	May 17, 2018
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A buoyant wave energy device is disclosed that incorporates an open-bottomed tube of substantial length in which is partially enclosed a first body of water that oscillates in response to wave action. The device incorporates a buoy to which an upper end of the tube is connected and inside of which is trapped a second body of water of substantial mass. A differential phase in the oscillations of the water trapped in the tube, and the oscillations of the buoy of augmented mass, result in the periodic compression of a pocket of air trapped at the top of the tube, and in the subsequent expulsion of pressurized air through a turbine, thereby generating electrical power.

First claim

We claim:

1 . An air pressurization buoy, comprising:
a buoyant structure adapted to float adjacent to an upper surface of a body of water, and having an inner fluid reservoir; a hollow tube depending from the buoyant structure, which, when the buoyant structure floats adjacent to an upper surface of a body of water, has an approximately vertical orientation, the hollow tube comprising; an aperture at a lower end through which water may flow between the body of water and an interior of the hollow tube; an inflow valve adapted to fluidly connect an interior of the hollow tube to the atmosphere when a pressure of the hollow tube falls below the atmospheric pressure; an outflow valve adapted to fluidly connect an interior of the hollow tube to the inner fluid reservoir when a pressure of the hollow tube rises above a pressure of the inner fluid reservoir; and wherein the inner fluid reservoir contains an aperture through which fluid may flow between the inner fluid reservoir and the body of water.

2 . The air pressurization buoy of claim 1 , wherein the inflow valve is positioned at an upper end of the hollow tube and above a waterline of the buoyant structure.

3 . The air pressurization buoy of claim 1 , wherein the outflow valve fluidly connects an upper end of the hollow tube with an upper end of the inner fluid reservoir.

4 . The air pressurization buoy of claim 1 , wherein the aperture of the inner fluid reservoir is positioned at a lower end of the inner fluid reservoir.

5 . The air pressurization buoy of claim 1 , wherein a buoyancy of the air pressurization buoy is adapted to increase when air flows through the outflow valve and into the inner fluid reservoir.

6 . The air pressurization buoy of claim 1 , further comprising an effluent duct through which pressurized air within the inner fluid reservoir may flow out of the inner fluid reservoir.

7 . The air pressurization buoy of claim 6 , further comprising a turbine rotated by a flow of air through the effluent duct.

8 . The air pressurization buoy of claim 7 , further comprising a generator operably connected to the turbine.

9 . The air pressurization buoy of claim 6 , wherein a buoyancy of the air pressurization buoy is adapted to decrease when air flows out of the inner fluid reservoir through the effluent duct.

10 . The air pressurization buoy of claim 8 , further comprising a plurality of computers adapted to receive electrical power generated by the generator.

11 . The air pressurization buoy of claim 10 , further comprising an antenna configured to transmit and receive encoded electromagnetic signals.

12 . The air pressurization buoy of claim 11 , wherein a received encoded electromagnetic signal comprises a computational task.

13 . The air pressurization buoy of claim 11 , wherein a transmitted encoded electromagnetic signal comprises a computational result.

14 . The air pressurization buoy of claim 10 , further comprising a heat exchanger configured to transmit thermal energy from one of the plurality of computers to the body of water.

15 . The air pressurization buoy of claim 14 , further comprising a phase-changing material adapted to receive thermal energy from one of the plurality of computers.

16 . The air pressurization buoy of claim 1 , further comprising a nebulizer configured to receive pressurized air from the inner fluid reservoir and to create an aerosol of water from the body of water.

Assignees

• Lone Gull Holdings Ltd

Inventors

• Sheldon-Coulson Garth Alexander
• Moffat Brian Lee
• Place Daniel William

Classifications

• H02K7/1823

  structurally associated with turbines or similar engines · CPC title

• F05B2220/706

  an electrical generator · CPC title

• Y02E10/30

  Energy from the sea, e.g. using wave energy or salinity gradient · CPC title

• F05B2240/95

  offshore · CPC title

• F05B2240/93

  on a structure floating on a liquid surface · CPC title