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Rotary magnetic refrigerator

  • US 4,625,519 A
  • Filed: 04/18/1985
  • Issued: 12/02/1986
  • Est. Priority Date: 04/20/1984
  • Status: Expired due to Term
First Claim
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1. In a rotary magnetic refrigerator comprising rotors which are packed with portions of a working substance at equal spacing along the outer circumference thereof, and which are made of a material having a low thermal conductivity, openings that are formed in the outer surfaces of said rotors so as to communicate with a high-temperature cooling medium, housings having cooling portions provided on sides thereof opposite to said openings, means which establishes an intense magnetic field near said openings and which establishes a weak magnetic field near said cooling portions, and means for driving said rotors, a rotary magnetic refrigerator characterized in comprising:

  • two of such rotors;

    housings having openings which are formed in common for said two rotors, and cooling portions which are formed independently with respect to said rotors;

    single electromagnet means for establishing an intense magnetic field near said openings;

    means for establishing a weak magnetic field near said cooling portions; and

    drive means for rotating said two rotors in synchronism with each other.

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