Title:
SUPERCONDUCTING SWITCH COOLED BY MEANS OF INTERNAL CAVITY FILLED WITH LIQUID OR GASEOUS COOLANT
Document Type and Number:
WIPO Patent Application WO/2010/073146
Kind Code:
A3
Abstract:
When testing or powering up a magnet in a magnetic resonance imaging (MRI) device, a switch (10) is provided that switches a winding (12) between resistive and superconductive modes. The switch (10) comprises a housing (26) that contains a winding (12) wound about a bobbin (14), and an internal coolant cavity (16) that contains coolant that cools the winding (12). A baffle (20) separates the internal coolant cavity (16) from an external coolant reservoir (18). The baffle has small apertures that permit influx of liquid coolant into the internal cavity (16) to cool the winding. At high temperatures, the coolant in the internal cavity (16) vaporizes causing the winding to further increase its temperature and resistance. Upon reduction of heat to the winding (12), the winding cools sufficiently to permit influx of liquid coolant, thereby restoring a superconductive mode of operation to the winding (12).
Inventors:
AKHMETOV ALEXANDER A (US)
Application Number:
PCT/IB2009/055290
Publication Date:
September 02, 2010
Filing Date:
November 23, 2009
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
AKHMETOV ALEXANDER A (US)
AKHMETOV ALEXANDER A (US)
International Classes:
H01L39/20
Foreign References:
| JPS63239876A | 1988-10-05 | |||
| JPS6381874A | 1988-04-12 | |||
| US20090267716A1 | 2009-10-29 |
Attorney, Agent or Firm:
DAMEN, Daniel, M. (High Tech Campus 44P.O. Box 220, AE Eindhoven, NL)
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