Centrifugal pump for electric household appliances such as washi

Details Centrifugal pump for electric household appliances such as washi Centrifugal pump for electric household appliances such as washi

1988-04-19

1989-08-29

Croyle, Carlton R.

Pumps

Motor driven

Electric or magnetic motor

41742311, 4174241, 416244R, 464 24, 464160, F04B 900

Patent

active

048612405

ABSTRACT:
The pump comprises a pump body and a volute, mutually complementary with respect to one another, which once assembled form a waterproof container within which a permanent magnet rotor and an impeller are contained respectively in a first and in a second chamber. The stator part of the electric motor is provided externally to said waterproof container, and thus can never be affected by the liquid. The introduced improvements relate to the coupling between impeller and rotor and to the means adapted to make the rotor chamber waterproof, so that there cannot enter therein foreign matter, and in particular metallic dust, which by remaining associated with the permanent magnet of the rotor would prevent the rotation thereof, blocking its operation.

REFERENCES:
patent: 4703840 (1987-11-01), Bopp
patent: 4750872 (1988-06-01), Palliser

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