Vaporization cooled dielectric fluid pump

Details Vaporization cooled dielectric fluid pump Vaporization cooled dielectric fluid pump

1978-04-07

1980-04-15

Croyle, Carlton R.

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

417414, 310 54, 310 63, F04B 3906

Patent

active

041981910

ABSTRACT:
The invention is a hermetically sealed motor driven pump cooled by a liquid dielectric coolant. The pump has an impeller housing, a motor housing containing a liquid dielectric cooling fluid of the same type as the pumped fluid, and a sealing means between the impeller housing and the motor housing to prevent flow of the pumped fluid from the impeller housing to the motor housing. An electric motor is contained in the motor housing with a shaft extending into the impeller housing and an impeller attached to the shaft inside the impeller housing. A hollow conduit from the discharge port of the impeller housing to the motor housing is used to create a fluid pressure inside the motor housing equal to the pressure of the pumped fluid at the discharge port to increase the heat dissipation. Particles in the pumped fluid are effectively excluded from contacting the bearings. The hollow conduit may contain a filter or desiccant and the motor housing may contain a magnetic plug.

REFERENCES:
patent: 2321126 (1943-06-01), Breuer
patent: 2510632 (1950-06-01), Hemphill
patent: 2839006 (1958-06-01), Mayo
patent: 3195467 (1965-07-01), Collet
patent: 3479541 (1969-11-01), Robinson
patent: 3497133 (1970-02-01), Childress et al.
patent: 3572976 (1971-03-01), Sato
patent: 3790309 (1974-02-01), Volz

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