Patent ID: 7518333
Filing Date: 2009-04-14
Classification: A01K,H02P

Abstract:
1. A permanent magnet synchronous motor (PMSM) pump for creating a dynamic forward and backward surge in a reef tank comprising: a. a concentric rotor and impeller assembly comprising a first conical impeller having a first multiplicity of vanes, a first shaft for coupling said first conical impeller to a magnetic rotor, a second shaft for coupling said magnetic rotor to a second conical impeller having a second multiplicity of vanes wherein the apexes of each conical member are in line, and wherein said first conical impeller is disposed above said second conical impeller, for facilitating the bi-direction movement of water through said pump; b. a permanent magnet synchronous, PMS, motor with means defining a cylindrical opening to concentrically accept said magnetic rotor wherein said first conical impeller is disposed above said cylindrical opening means and where said second conical impeller is concentrically disposed below said cylindrical opening means where said PMS motor provides rotational energy to said rotor, for driving water in either of two directions; c. means defining a first conical pathway for water to flow in an outward direction driven by said first conical impeller; d. means defining an input chamber for allowing water to enter said first conical pathway; e. means defining a second conical pathway for water to flow in an inward direction driven by said second conical impeller; f. means defining an input chamber for allowing water to exit said second conical pathway; and g. means successively actuating said PMSM pump for causing water to either exit said first conical pathway or enter said second conical pathway.