Apparatus for frictionally heating liquid
OwnerEugene W. Perkinsinventor
Life of this patent
Estimating the term…
Abstract
An impeller for frictionally heating liquid is arranged that upon rotation thereof in a liquid reservoir, liquid is forced from the exterior of the impeller through passages having restricted orifices therein to an inner outlet cavity closed on one side and having an axial opening on the other. The impeller not only heats the liquid due to the shear friction of the liquid with its outer surface, but the liquid flowing through these passages is further heated as it is forced through the orifices. The impeller serves both as a friction heater and a pump to circulate heated liquid through an outlet port in the housing to a heat utilization device and back to an inlet port.
Claims7
Apparatus for heating liquid comprising:
- a. an impeller for disposition within a closed housing defining a reservoir for containing a heat transfer liquid said impeller comprising:
- i. a cylindrical rotor having external surface including a peripheral surface said external surfaces being arranged for frictional engagement with liquid in said housing;
- ii. a central outlet cavity;
- and
- iii. fluid passages leading from said peripheral surface into said outlet cavity;
- said passages being arranged relative to the axis of rotation of said rotor that upon rotation thereof in a predetermined direction liquid is forced to flow from the peripheral surface of said rotor into said outlet cavity;
- and restricted orifices in said fluid passages to cause liquid to be heated as it flows through said passages into said outlet cavity.
Dependencies are inferred from the claim text.