Centrifugal pump

Details Centrifugal pump Centrifugal pump

2007-11-13

2007-11-13

Nguyen, Ninh H. (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Casing having tangential inlet or outlet

C415S207000

Reexamination Certificate

active

11071177

ABSTRACT:
A centrifugal pump (1) is proposed, in particular for household appliances, such as washing machines or dishwashers, which comprises a pump housing (2) having an axial inlet (11), an outlet (12) and a heating element, wherein the pump housing (2) incorporates a rotatably mounted impeller (4) and a flow channel (15) enveloping the impeller (4) and heating element. The centrifugal pump (1) according to the invention is intended to have improved efficiency. This is achieved by having the flow cross-section of the flow channel (15) increase along the periphery toward the outlet (12).

REFERENCES:
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patent: 5701388 (1997-12-01), Steinhardt
patent: 6779974 (2004-08-01), Chien
patent: 28 03 815 (1978-08-01), None
patent: 33 04 265 (1983-08-01), None
patent: 199 16 136 (2000-10-01), None
patent: 103 24 626 (2002-03-01), None

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