Gas-cooled electric machine

Details Gas-cooled electric machine Gas-cooled electric machine

1992-10-26

1994-01-04

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 56, H02K 900

Patent

active

052763730

ABSTRACT:
In gas-cooled electric machines having a stator (3) and a rotor (6) on which an axial ventilator (9) is arranged, the cooling gas flows unevenly into the end-winding cavity (13) seen in the circumferential direction. By providing upstream of the axial ventilator (9), when seen in the direction of flow of the cooling gas, and coaxially with said ventilator an annular air guide member (1) having baffles (17), and reducing the flow cross section for the cooling gas flowing through the air guide member (1) in the main direction of the approach flow on a part of the outer circumference of the air guide member (1) by means of a covering (23), the cooling effects becomes more even and the axial ventilator (9) is better utilized.

REFERENCES:
patent: 3969643 (1976-07-01), Sapper
patent: 4286183 (1981-08-01), Montgomery
patent: 5084641 (1992-01-01), Saima et al.
Air-Cooled Turbogenerators 18 to 230 MVA Series WX and WY Publication No. CH-KW 1608 87 E Supersedes CH-T 070 084 E pp. 1-12.

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