Rotor for an electrical machine with axial and radial cooling ch

Details Rotor for an electrical machine with axial and radial cooling ch Rotor for an electrical machine with axial and radial cooling ch

1985-03-11

1987-02-03

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310261, H02K 914

Patent

active

046410511

ABSTRACT:
A rotor for an electrical machine having standard axial cooling channels extending the length of the rotor, feeding regularly spaced radial cooling channels. The cooling distribution of the air flow coming into the rotor from the frontal sides is improved by blocking off some of the flow into the central radial channels, which in standard designs are excessively cooled, and thereby forcing the air flow to cool other radial channels better. By more evenly distributing the cooling air flow, less air flow is required, thereby saving energy. The invention is readily adaptable to various rotor configurations.

REFERENCES:
patent: 891906 (1908-06-01), Card
patent: 2947892 (1960-08-01), Inculet et al.
patent: 3435263 (1969-03-01), Willyoung
patent: 3846651 (1974-11-01), Mishra
patent: 3955111 (1976-05-01), Weghaupt
patent: 4341966 (1982-07-01), Pangburn
"Luefterwirkung, Luftverteilung und Ventilationsverluste an achsnormal geschlitzten Rotoren fuer grosse elecktrische Maschinen," by F. Wressnigg (a doctoral dissertation at the University of Berlin in 1972).

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