Liquid pumps with hermetically sealed motor rotors
AssigneeDEKA Products Limited Partnership
InventorsJason A. Demers, Scott A. Leonard, Kingston Owens
Life of this patent
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Abstract
Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In an embodiment of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product, and an electric motor with motor rotor and magnets hermetically sealed within the fluid pressure boundary of the distillation system.
Claims39
A method for distilling a liquid in a liquid vapor distillation system comprising:
- preheating liquid in a sump;
- vaporizing the liquid in the sump, through an evaporator, to form a vapor to fill a head chamber, the evaporator comprising a plurality of parallel evaporator tubes, each tube having a first open end in communication with the sump and a second open end in communication with a head chamber;
- compressing the vapor by rotating the vapor in a vapor pump using an internal drive shaft and eccentric rotor with a rotatable housing an electric motor having motor rotor and motor magnets hermetically sealed within a liquid pressure boundary of the vapor pump;
- condensing the compressed vapor into a distilled liquid product;
- post-treating the distilled liquid product;
- maintaining a liquid level in the head chamber sufficient to permit both purification of the vapor and damping of local turbulence;
- and
- diverting a blowdown stream from the head chamber maintaining a constant liquid level in the head chamber.
A method for distilling a liquid in a liquid vapor distillation system comprising:
- preheating liquid in a sump;
- vaporizing the liquid in the sump, through an evaporator, to form a vapor to fill a head chamber, the evaporator comprising a plurality of parallel evaporator tubes, each tube having a first open end in communication with the sump and a second open end in communication with a head chamber;
- compressing the vapor by rotating the vapor in a vapor pump using an internal drive shaft and eccentric rotor with a rotatable housing an electric motor having motor rotor and motor magnets hermetically sealed within a liquid pressure boundary of the vapor pump;
- condensing the compressed vapor into a distilled liquid product;
- post-treating the distilled liquid product;
- and
- coupling a clean-burning generator to the liquid vapor distillation system wherein the clean-burning generator produces mainly CO.sub.2, N.sub.2 and water as exhaust.
A method for distilling a liquid in a liquid vapor distillation system comprising:
- preheating liquid in a sump;
- vaporizing the liquid in the sump, through an evaporator, to form a vapor to fill a head chamber, the evaporator comprising a plurality of parallel evaporator tubes, each tube having a first open end in communication with the sump and a second open end in communication with a head chamber;
- compressing the vapor by rotating the vapor in a vapor pump using an internal drive shaft and eccentric rotor with a rotatable housing an electric motor having motor rotor and motor magnets hermetically sealed within a liquid pressure boundary of the vapor pump;
- condensing the compressed vapor into a distilled liquid product;
- and
- post-treating the distilled liquid product,
- wherein the post-treating the distilled liquid product comprising adding an additive to the liquid, and
- wherein the additive is at least one selected from the group consisting of a sugar-based additive, an acid, and a mineral.
A method for distilling a liquid in a liquid vapor distillation system comprising:
- preheating liquid in a sump;
- vaporizing the liquid in the sump, through an evaporator, to form a vapor to fill a head chamber, the evaporator comprising a plurality of parallel evaporator tubes, each tube having a first open end in communication with the sump and a second open end in communication with a head chamber;
- compressing the vapor by rotating the vapor in a vapor pump using an internal drive shaft and eccentric rotor with a rotatable housing an electric motor having motor rotor and motor magnets hermetically sealed within a liquid pressure boundary of the vapor pump;
- condensing the compressed vapor into a distilled liquid product;
- and
- post-treating the distilled liquid product,
- wherein the post-treating the distilled liquid product comprising adding an additive to the liquid, and
- wherein the additive is at least one selected from the group consisting of a nutrient, a vitamin, a stabilized protein, and a fat.
Dependencies are inferred from the claim text.