Patent · US Expired

Superconducting machine device with a superconducting winding and thermosiphon cooling

US7528510B2 · kind B2 · utility

5Cited by

2References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Michael Frank · Erlangen, DE
Adolf Kühn · Haag in Oberbayern, DE
Peter van Hasselt · Erlangen, DE

Key dates

Filing date	Apr 15, 2004
Grant date	May 5, 2009
Priority date	—
Expiry date	Oct 21, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E40/60
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

The machine device comprises a motor (2) with a rotor (5) rotating about an axis (A), the superconducting winding of which is coupled with thermal conduction to a central refrigerant cavity (12). The cavity (12) forms a single-tube system, together with the line sections (22) laterally connected thereto and a condenser chamber (18) of a refrigeration unit, located outside the motor (2), in which a refrigerant (k, k′) circulates as result of a thermal siphon effect. According to the invention, the refrigerant supply to the central cavity (12) is maintained, even with inclined positions (d) for the rotor (5), whereby pressurization means are provided, which generate pressure pulses of gaseous refrigerant, acting on the liquid refrigerant (k) in the condenser chamber (18) or the connected line sections (22).

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