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US 4,063,122 AGranted
Rotor containing a field winding cooled to a low temperature
AssigneeSiemens Aktiengesellschaft
InventorsDieter Kullmann, Lutz Intichar
Life of this patent
Estimating the term…
Abstract
An improved rotor for an electric machine, particularly for a synchronous machine, comprising a field winding cooled to a low temperature in which the rotor includes a concentric, hollow, cylindrical support body having internal slots on its inside for accommodating the field winding so that the winding can be placed in the slots in a simple manner and the windings retained more securely therein.
Claims7
A rotor for an electric machine such as a synchronous machine containing a field winding which is cooled to a low temperature comprising:
- a. an inner cylinder made of a non-magnetic material;
- b. a hollow cylindrical support body made of a non-magnetic material containing on its inside a plurality of internal slots, said cylindrical support body concentrically surrounding and being in close contact with said inner cylinder;
- c. a plurality of field windings disposed in the slots of said support body;
- d. means at each end of said rotor defining a pressure tight space between said inner cylinder and said support body which spaces are in communication with said internal slots;
- and
- e. means for supplying a cooling medium to the space at one end of said rotor and means for removing cooling medium at low temperature from the space at the other end of said rotor whereby said cooling medium will be conducted from one end of said rotor to an other end of said rotor past said field windings.
3 more elements
Dependencies are inferred from the claim text.