Patent ID: 7481064

Claim:
A device for generating cold and heat by a magneto-calorific effect, wherein the device comprises: an enclosure ( 11 ) divided into first and second compartments ( 12 , 13 ) that are juxtaposed and separated from one another by a partition ( 14 ), the enclosure ( 11 ) comprises a cylindrical portion closely accommodating a rotating element ( 15 ) which comprises cylindrical shaped wheel that is arranged transversely in relation to the first and second compartments ( 12 , 13 ) and rotating on an axle located in a plane of the partition ( 14 ) so that the rotating element ( 15 ) is simultaneously located partially inside the first and second compartments ( 12 , 13 ), the rotating element is coaxial with the cylindrical portion of the enclosure ( 11 ) so that the fluid flows axially through the cylindrical rotating element ( 15 ); a first hot circuit ( 17 a ) connected to the first compartment ( 12 ) of the enclosure ( 11 ) and comprising a first heat exchanger ( 18 ) through which a first heat-transmitting fluid circulates, and the first exchanger being connected to a heat utility circuit ( 19 ); a second cold circuit ( 17 b ) connected to the second compartment ( 13 ) of the enclosure ( 11 ) and comprising a second heat exchanger ( 21 ) through which a second heat-transmitting fluid circulates, and the second exchanger being connected to a cold utility circuit ( 22 ); and magnetic elements ( 16 ) for generating a magnetic field in the first compartment ( 12 ), at least in the area corresponding to the rotating element ( 15 ), the rotating element ( 15 ) comprising at least one magneto-calorific material which undergoes a temperature increase when the rotating element ( 15 ) passes through the first compartment ( 12 ) subjected to the magnetic field and cools down when the rotating element ( 15 ) passes through the second compartment ( 13 ) that is not subjected to the magnetic field.