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US 8,998,576 B2Granted
Pump with hydraulic isolator
AssigneePentair Water Pool and Spa, Inc.
InventorsJames Miller, Leonard Richiuso, Rick Langlois
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention provide a hydraulic isolator to split a volute of a pump into two compartments. The hydraulic isolator is positioned within the volute and includes an inlet positioned around a volute inlet channel of the pump, and an outlet positioned adjacent to an outlet channel of the pump. The hydraulic isolator also includes a toroidal portion to at least partially surround an impeller of the pump.
Claims14
A pump comprising:
- a pump housing including a volute and internal ribs extending into the volute;
- a diffuser positioned within the volute;
- an impeller positioned within the volute;
- a motor coupled to the pump housing;
- a seal plate enclosing the impeller within the volute;
- and
- a hydraulic isolator including an inlet projection portion and a cylindrical body portion, the hydraulic isolator positioned within the volute and coupled to the pump housing, the hydraulic isolator substantially splitting the volute into a first compartment where fluid is pumped by the impeller and a second compartment where the internal ribs are positioned, wherein the impeller is positioned within the diffuser and the diffuser is positioned within the cylindrical body portion of the hydraulic isolator.
4 more elements
A hydraulic isolator to split a volute of a pump into two compartments, the hydraulic isolator comprising:
- a cylindrical body portion including a plurality of snap fit features that engage an inner wall of the pump volute to position the hydraulic isolator within the volute;
- an inlet projection portion positioned around a volute inlet channel of the pump;
- an outlet located on the cylindrical body portion and capable of being positioned adjacent to an outlet channel of the pump;
- and
- a toroidal portion that couples the inlet projection portion to the cylindrical body portion, wherein the toroidal portion forms a front wall of the hydraulic isolator and separates the volute of the pump into a first compartment defined by the cylindrical body portion and the toroidal portion, and a second compartment defined by the toroidal portion, the inlet projection portion of the hydraulic isolator, and the inner wall of the volute.
2 more elements
Dependencies are inferred from the claim text.