Sealed motor driven centrifugal primary fluid pump with secondary fluid flow for cooling primary fluid
OwnerFerdinand Lustwerkinventor
Life of this patent
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Abstract
A sealed submersible electric motor driven centrifugal primary cooling fluid pump is entirely submersible in the electron beam tube cooling system of an X-Ray system incorporates a heat exchanger in the pump, wherein primary cooling fluid (oil or other high dielectric strength fluid) that is pumped in the sealed pump through an annular primary fluid passage therein is cooled by secondary cooling fluid flowing through an annular passage wrapped around the primary fluid annular passage over the length of the primary fluid annular passage, providing a compact unit of pump and heat exchanger.
Claims26
A motor driven centrifugal primary fluid pump comprising,
- (a) a pump rotor,
- (b) a pump drive motor having a drive axis of rotation,
- (c) a primary fluid input to said pump from an outside source,
- (d) a primary fluid output from said pump to an outside utilization system,
- (e) means providing an annular passage around said motor for the flow of said primary fluid axially from said primary input to said primary output,
- (f) means providing a secondary fluid annular passage around said primary fluid annular passage to cool said primary fluid,
- (g) a secondary fluid input to said secondary fluid annular passage from a secondary fluid source and
- (h) a secondary fluid output from said secondary fluid annular passage to a secondary fluid reservoir.
A motor driven centrifugal primary fluid pump for pumping cooling fluid to the electron beam tube of a CAT scan system comprising,
- (a) a pump rotor,
- (b) a pump drive motor having a motor drive shaft defining an axis of rotation,
- (c) a primary fluid sealed housing enclosing said rotor and said drive motor,
- (d) a primary fluid input to said primary housing from an outside source,
- (e) a primary fluid output from said primary housing to an outside utilization system,
- (f) said pump rotor being carried on said motor drive shaft so that said rotor rotates within said primary housing when driven by said motor drive shaft and pumps said primary fluid from said primary fluid input axially to said primary fluid output,
- (g) a secondary fluid sealed housing enclosing said primary fluid sealed housing,
- (h) a secondary fluid input to said secondary housing from a source of said secondary fluid,
- (i) a secondary fluid output from said secondary housing to a reservoir of said secondary fluid.
Dependencies are inferred from the claim text.