Patent ID: 8310077
Filing Date: 2012-11-13
Classification: F03B,F05B,Y02E

Abstract:
1. An electrical machine adapted to be constrained within a flow of fluid, the machine comprising: a stator adapted to be constrained within a flow of fluid; a rotor defining an aperture and having a plurality of rotor blades protruding from a peripheral region of the rotor into said aperture, wherein the rotor is adapted to be rotatably mounted to said stator such that movement of fluid through said aperture causes rotation of said rotor relative to said stator; at least one electricity generating apparatus adapted to generate electricity as a result of rotation of said rotor relative to said stator; and at least one adjusting apparatus for adjusting the orientation and/or depth of the machine in a manner dependent on the rate of flow of fluid, wherein at least one said adjusting apparatus comprises at least one first fin adapted to pivot relative to said stator such that the orientation of at least one said first fin relative to the stator depends upon the rate of fluid flow.