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Magneto-caloric thermal diode assembly with a rotating heat exchanger

  • US 10,684,044 B2
  • Filed: 07/17/2018
  • Issued: 06/16/2020
  • Est. Priority Date: 07/17/2018
  • Status: Active Grant
First Claim
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1. A magneto-caloric thermal diode assembly, comprising:

  • a magneto-caloric cylinder;

    a plurality of thermal stages stacked along an axial direction between a cold side and a hot side, each of the plurality of thermal stages comprises a plurality of magnets and a non-magnetic ring, the plurality of magnets distributed along a circumferential direction within the non-magnetic ring in each of the plurality of thermal stages, the plurality of thermal stages and the magneto-caloric cylinder configured for relative rotation between the plurality of thermal stages and the magneto-caloric cylinder; and

    a heat exchanger comprisinga cylindrical stator positioned at and in thermal communication with the cold side or the hot side of the plurality of thermal stages;

    a cylindrical rotor spaced from the cylindrical stator by a cylindrical gap, the cylindrical rotor configured to rotate relative to the cylindrical stator about a rotation axis;

    wherein a shearing liquid zone is defined between a surface of the cylindrical stator that faces the cylindrical gap and a surface of the cylindrical rotor that faces the cylindrical gap when the cylindrical gap is filled with a liquid.

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