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US 12,345,449 B2Granted
Adiabatic demagnetization apparatus
AssigneeKiutra GmbH
InventorsAlexander Regnat, Jan Spallek
Life of this patent
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Abstract
The present disclosure is to a method of controlling an adiabatic demagnetization apparatus. The method includes varying at least one operation parameter of the adiabatic demagnetization apparatus.
Claims11
A method of controlling an adiabatic demagnetization apparatus operating in continuous adiabatic demagnetization refrigeration (CADR) mode, comprising:
- providing n adiabatic demagnetization units that provide cooling without the use of liquid cooling media, wherein n is the total number of adiabatic demagnetization units and n is equal or greater than 2;
- cycling at least two of the adiabatic demagnetization units of the adiabatic demagnetization apparatus between respective first temperatures and second temperatures with varying cycling frequency, wherein the cycling frequency is varied during the operating of the adiabatic demagnetization apparatus in the CADR mode based on a change of a heat load, and wherein the cycling frequency is increased when the heat load increases and the cycling frequency is decreased when the heat load decreases.
A method of controlling an adiabatic demagnetization apparatus operating in continuous adiabatic demagnetization refrigeration (CADR) mode, the adiabatic demagnetization apparatus providing cooling without the use of liquid cooling media, comprising:
- operating a plurality of thermal switches of the adiabatic demagnetization apparatus in a first switching mode if at least one of a first target temperature is set and a first heat load is applied;
- and
- in response to at least one of (i) a change of a target temperature from the first target temperature to a second target temperature and (ii) a change of a heat load from the first heat load to a second heat load during the operating of the adiabatic demagnetization apparatus in the CADR mode,
- operating the plurality of thermal switches in a second switching mode different from the first switching mode.
1 more element
Dependencies are inferred from the claim text.