Gas-cooled dynamo-electric machine

Electrical generator or motor structure – Dynamoelectric – Rotary

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Details

310 58, H02K 900

Patent

active

039696430

ABSTRACT:
A dynamo-electric machine of the gas-cooled type, for example, an induction of synchronous machine is comprised of a casing which houses a rotor and a stator. A gas-coolant inlet space is provided within the casing at each end thereof and a gas-coolant outlet space is provided between the periphery of the stator and the inner surface of the casing. The internal space occupied by the stator and rotor components is separated from the gas-coolant inlet spaces provided within opposite end portions of the casing and the gas-coolant is force-circulated from the inlet spaces in a radially outward direction through radially extending slots provided in the rotor and stator to the outlet space, the rotor slots functioning as a centrifugal fan in establishing the forced circulation of the gas-coolant through the machine. In addition to the cooling slots in the stator, the gas-coolant passes through a channel provided along each end face of the stator, and these channels are established by annular divider members located in axially spaced relation to the stator end faces and which also function as substantially gas-tight partitions between the channels and the gas-coolant inlet spaces. Also, the end turn portions of the stator winding are located substantially completely within the gas-coolant inlet spaces.

REFERENCES:
patent: 2707242 (1955-04-01), Baudry
patent: 2707242 (1955-04-01), Baudry
patent: 2873393 (1959-02-01), Baudry
patent: 3030530 (1962-04-01), Tudge
patent: 3064152 (1962-11-01), De Paul
patent: 3160770 (1964-12-01), Asantcheeff
patent: 3517232 (1970-06-01), Sano
patent: 3716732 (1973-02-01), Tillma
patent: 3739208 (1973-06-01), Shartrand

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