Super-conductive electrical machine having an improved system fo

Details Super-conductive electrical machine having an improved system fo Super-conductive electrical machine having an improved system fo

1977-11-28

1980-12-16

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

4151991, H02K 900

Patent

active

042399998

ABSTRACT:
A super-conductive cryogen-cooled electrical machine comprises a rotor disposed within a hollow stator with an annular gap which is evacuated and kept under vacuum by means of at least two shells furnished with ports and position concentrically with a clearance or gap therebetween. One of said shells is supported in a cantilevered fashion by the rotor on the end face thereof to be coaxial therewith and the other being supported in a cantilevered fashion by the stator on the end face thereof opposite said end face of the rotor. The ports in the rotor-supported shells are made so that their axes form an acute angle .alpha. with tangent lines drawn to the shell periphery from the points where the port axes intersect the shell envelope in the direction of the rotor rotation, while the ports in the stator supported shells are made so as to form, in a similar way, an angle .beta.=180.degree.-.alpha.. The proposed construction of the electrical machine permits increasing the reliability and efficiency of the vacuum heat insulation of the rotor and reducing manufacture and operating costs.

REFERENCES:
patent: 3809933 (1974-05-01), Sugawara
patent: 3999091 (1976-12-01), Kirtley
patent: 4017755 (1977-04-01), Litz
patent: 4088911 (1978-05-01), Wetzig
patent: 4101793 (1978-07-01), Berthet

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