Patent ID: 11929203
Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F  G | IPC F  G  H

Claim 8:
9. The superconducting magnet assembly of claim 1, wherein
the refrigeration component includes a switch component,
the switch component includes a thermal switch, the thermal switch including a activation mode configured to facilitate heat transfer between the first stage cold head and the radiation shield, and a deactivation mode configured to break or impede the heat transfer between the first stage cold head and the radiation shield;
a first value of a heat transfer rate of at least a portion of the thermal switch at a first temperature range including a refrigeration temperature of the first stage cold head is relatively high so that the thermal switch is in the activation mode when the refrigerator is on;
a second value of the heat transfer rate of the at least portion of the thermal switch at a second temperature range higher than the first temperature range is smaller than the first value so that the first thermal switch is in the deactivation mode when the refrigerator is off.