Jet pump with filter for washing machines

Details Jet pump with filter for washing machines Jet pump with filter for washing machines

1997-11-14

1999-10-19

Freay, Charles G.

Pumps

One fluid pumped by contact or entrainment with another

Jet pump with motive fluid generating pump

417 79, 417160, F04B 2308

Patent

active

059677600

ABSTRACT:
A clog resistant pump for washwater employs two water flow circuits. The first powered by a conventional motor-driven pump uses filtered washwater and drives a jet-pump discharging unfiltered washwater from the washing machine. The intake or discharged water from the jet-pump is used to operate a self-cleaning filter providing water for the first circuit of the motor-driven pump. The position of the filter in the stream of wastewater and adjustment of the filter apertures in size and area reduce clogging yet allow sufficiently filtered water to permit a conventional high efficiency motor-driven pump to be used in the first stage.

REFERENCES:
patent: 2677389 (1954-05-01), Jisha et al.
patent: 3158101 (1964-11-01), Dollar
patent: 3807419 (1974-04-01), Cushing et al.
patent: 5133324 (1992-07-01), Michiaki

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