Induction apparatus for heating and mixing a fluid
AssigneeThe Electricity Council
InventorJohn T. Griffith
Life of this patent
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Abstract
The simultaneous heating and mixing of a fluid in a vessel with heated walls and a stirring device can lead to excessively high temperatures at the walls due to the formation of a thick boundary layer. This specification discloses a stirring paddle incorporating a heated element and mounted on a rotatable shaft. The heating element is connected in series with a rotor winding mounted on the shaft so that, when the shaft rotates, a heating current flows through the heating element.
Claims7
Apparatus for heating and mixing a fluid, comprising a vessel for fluid to be heated and mixed, a mixing paddle in the vessel and rotatable on a shaft to mix the fluid, a magnetic rotor core mounted on the shaft to rotate with the shaft, an electric conductor circuit formed of a rotor winding on the rotor core in series with a heating conductor in the paddle, and induction means to generate, at least on rotation of the shaft, a varying magnetic flux in the rotor core to induce a heating current in said rotor winding and the heating conductor in the paddle.
Dependencies are inferred from the claim text.