Refrigeration – Storage of solidified or liquified gas
Reexamination Certificate
2007-09-04
2007-09-04
Ali, Mohammad M. (Department: 3744)
Refrigeration
Storage of solidified or liquified gas
C062S259200
Reexamination Certificate
active
10531348
ABSTRACT:
The invention relates to a cooling method for cooling a superconducting coil assembly in a MR apparatus, wherein the superconducting coil assembly10is cooled using a cooling agent41, 42which is in thermal contact with the superconducting coil assembly in a cooling chamber20, the cooling agent being cooled by a refrigerator50. The method comprises the steps of transferring (S2) cooling agent from the cooling chamber to a cooling agent storage when a predetermined temperature is exceeded in at least a part of the cooling agent in the cooling chamber, and returning (S4) cooling agent from the cooling agent storage to the cooling chamber when the temperature of at least a part of the cooling agent in the cooling chamber is equal to or less than the predetermined temperature. The invention also relates to a cooling device for performing the cooling method and to an MR apparatus with such a cooling device.
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Ali Mohammad M.
Koninklijke Philips Electronics , N.V.
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