Patent ID: 6935121

Claim:
A reciprocating and rotating magnetic refrigeration apparatus for magnetizing and demagnetizing a magnetocaloric material through reciprocating and rotational motion, comprising: a freely rotating rotor located in the center of the apparatus and embedded with permanent magnets; an annular stator surrounding the rotor, the stator containing a permanent magnet; an even number of equally spaced stator nose poles on the inner perimeter of the stator having their heads attached to the magnetocaloric material; magnetic supply coils surrounding the stator nose poles receiving current alternately across two adjoining coils to generate magnetic resistance and magnetic torque to attract the rotor to rotate reciprocally, the permanent magnets of the rotor and the electromagnetic field generated by the magnetic supply coils form a magnetic path alternately to magnetize and demagnetize the magnetocaloric material thereby altering the temperature and entropy of the magnetocaloric material; and a heat transfer unit for discharging generated heat energy.