Patent · US Expired

Superconductive device comprising a refrigeration unit, equipped with a refrigeration head that is thermally coupled to a rotating superconductive winding

US7240496B2 · kind B2 · utility

3Cited by

8References

17Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Michael Frank · Erlangen, DE
Wolfgang Nick · Nürnberg, DE
Peter van Hasselt · Erlangen, DE

Key dates

Filing date	Mar 31, 2003
Grant date	Jul 10, 2007
Priority date	—
Expiry date	Jan 29, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E40/60
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a superconductive device containing a rotor that can be rotated about an axis of rotation and that comprises a superconductive winding in a winding support. Said winding support has a central cavity, into which two fixed thermal tubes project axially. One of said tubes forms a cooling finger that is closed at the end and contains a second coolant with a higher condensation temperature. The other tube supplies a first cooling with a lower condensation temperature to the central cavity and evacuates said coolant from the cavity. To condense the coolants, the tubes lead to a refrigeration unit, situated outside the rotor and equipped with a refrigeration head and a condenser device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.