Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1976-04-14
1978-08-01
Padgett, Benjamin R.
Electrical generator or motor structure
Dynamoelectric
Rotary
55431, 252194, 310 65, 310 89, 310 91, H02K 510, H02K 522, B01D 5304
Patent
active
041045513
ABSTRACT:
An explosion-proof canned electric motor for use at elevated temperatures wherein the upper portion of the motor housing contains the stator windings and the rotor and is connected with a terminal box by means of a tubular heat barrier. The terminal box is disposed at a level below the upper housing portion and has an annular venting orifice in the lowermost part thereof so that condensate which accumulates in the housing flows toward the orifice. Such condensate is absorbed by a cake of diatomaceous earth or another suitable porous desiccant which is placed into the path of condensate flow toward the orifice. The desiccant also removes moisture from air which flows into the terminal box, and the desiccant is relieved of accumulated moisture during starting of the motor when the air in the housing expands as a result of heating and flows through the pores of the desiccant on its way into the orifice.
REFERENCES:
patent: 3337802 (1967-08-01), Gill
patent: 3909644 (1975-09-01), Wieser
patent: 3965381 (1976-06-01), Shipman
Condensed Chemical Dictionary, 6th Ed., 1961, pp. 353-354.
Blank Wilhelm
Roth Ernst
Gluck Irwin
Klein, Schanzlin & Becker AG
Kontler Peter K.
Padgett Benjamin R.
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