Patent ID: 8973378
Filing Date: 2015-03-10
Classification: F17C,F25B,F25D,G01R,H01F

Abstract:
1. A coldhead sleeve cooling arrangement for a coldhead of a magnetic resonance imaging (MRI) system, the coldhead sleeve cooling arrangement comprising: a coldhead sleeve configured to receive therein a coldhead of art MRI system; a recondensor coupled to a vessel; and a cooling system surrounding and extending along substantially an entirety of an axial length of an outer surface of the coldhead sleeve, the cooling system using helium gas to remove heat from the coldhead sleeve, wherein the cooling system comprises a cooling tube, wherein the cooling tube is spiral wound around and in contact with the outer surface of the coldhead sleeve and includes a plurality of spiral turns, the plurality of spiral turns of the cooling tube abutting one another, the cooling tube connected to the vessel with a first gas passageway and connected to the recondensor with a second gas passageway, wherein helium gas from the vessel for recondensing is directed to the recondensor by the first and second gas passageways connecting the vessel and the recondensor.