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COMBINED-LOOP MAGNETIC REFRIGERATION SYSTEM

  • US 20120222428A1
  • Filed: 08/02/2010
  • Published: 09/06/2012
  • Est. Priority Date: 11/11/2009
  • Status: Abandoned Application
First Claim
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1. A magnetic refrigeration system comprising:

  • a transfer fluid that flows through a tubing in communication with a brazed heat exchanger, the brazed heat exchanger including alternating layers consisting of the tubing and a magnetocaloric material;

    one or more electromagnets being operative for magnetizing and demagnetizing the magnetocaloric material, a controller device controls the operation of the one or more electromagnets such that the transfer fluid is heated in a first pass through the brazed heat exchanger when the magnetocaloric material is magnetized by the one or more electromagnets and cooled in a second pass through the brazed heat exchanger when the magnetocaloric material is demagnetized;

    a warm heat exchanger in selective fluid flow communication with the brazed heat exchanger for transferring heat from the transfer fluid after the first pass of the transfer fluid through the brazed heat exchanger;

    a cold heat exchanger cools a refrigerator cabinet when the transfer fluid flowing through the cold heat exchanger provides a cooling effect to the interior of the refrigerator cabinet after the second pass of the transfer fluid through the brazed heat exchanger; and

    a three-way valve for directing the flow of transfer fluid from the brazed heat exchanger to either the warm heat exchanger during the first pass of the transfer fluid or the cold heat exchanger during the second pass of the transfer fluid as one cycle of the magnetic refrigeration system is completed.

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