Electric machine with a closed cooling loop

Details Electric machine with a closed cooling loop Electric machine with a closed cooling loop

1988-06-17

1989-07-04

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 59, 165903, H02K 900

Patent

active

048453943

ABSTRACT:
In gas-cooled electric machines with a closed cooling loop which is distributed over two heat exchangers, arranged on the upper or under side of the machine, only part of the circulating cooling gas is cooled so that the electric machine must be taken out of operation because of the danger of local ovewrheating. In order to overcome this, baffles are arranged adjacent to the heat exchangers so as to block the cooling gas on half the side of the opposite axial cooling gas passage regions of the heat exchangers, thus subdividing the cooling gas stream into two halves with opposite flow directions. The partial transfer of the cooling gas stream halves to the entire width of the axial cooling gas passage areas of the heat exchangers provides turbulence and a distribution of the cooling gas for uniform cooling also in the event of a failure of one heat exchanger.

REFERENCES:
patent: 2650313 (1953-08-01), Wiedemann
patent: 4208599 (1980-06-01), Armor
patent: 4264834 (1981-04-01), Armor
patent: 4609840 (1986-09-01), Eats
Page 14 of German Standards Publication, Graphic Symbols; DIN, 1946, Part 1.

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