THERMAL GENERATOR WITH MAGNETO-CALORIC MATERIAL
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Accused Products
Abstract
A heat generator (1) comprising at least one thermal module (10) that comprises N adjacent magnetocaloric elements (2) arranged in a circle around a central axis (A) and subjected to a varying magnetic field caused by magnetic devices (3). The magnetocaloric elements (2) are associated with N pistons (40) subjected to an reciprocating translation movement by an actuating cam (70) to circulate the heat transfer fluid, contained in the thermal module (10), in two opposite directions, at the same time, so that a first fraction of the heat transfer fluid circulates towards a hot exchange chamber (5), through the magnetocaloric elements (2) and is subjected to a heating cycle, and a second fraction of the heat transfer fluid circulates towards a cold exchange chamber (6), through the magnetocaloric elements (2), and is subjected to a cooling cycle, and inversely. The exchange chambers (5, 6) are coupled with external circuits that use calories and frigories for heating, air-conditioning, tempering systems, etc.
94 Citations
30 Claims
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1-15. -15. (canceled)
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16. A heat generator (1, 100) comprising magnetocaloric elements (2), magnetic devices (3) arranged so as to alternately subject the magnetocaloric elements (2) to a variation in magnetic field and alternately create, in each magnetocaloric element (2),
a heating cycle and a cooling cycle, at least one heat transfer fluid arranged to collect at least one of calories and frigories produced by the magnetocaloric elements (2) during the heating and cooling cycles, at least one hot exchange chamber (5) and one cold exchange chamber (6) respectively placed at hot and cold ends of the generator (1, 100), and means for circulating (4) the heat transfer fluid between the magnetocaloric elements (2) and the exchange chambers (5, 6), the generator comprising at least one thermal module (10-13) comprising at least one set of N magnetocaloric elements (2) arranged adjacently, the means for circulating (4) being synchronized with the variation in magnetic field and being arranged to alternately circulate the heat transfer fluid inside the thermal module (10-13) in two opposite directions at the same time, between the hot (5) and cold (6) exchange chambers through the magnetocaloric elements (2) so that a first fraction of the heat transfer fluid circulates towards the hot exchange chamber (5), through the magnetocaloric elements (2), subjected to a heating cycle, and that a second fraction of the heat transfer fluid circulates towards the cold exchange chamber (6), through the magnetocaloric elements (2) subjected to a cooling cycle, and inversely, wherein the means for circulating (4) are arranged to displace the head transfer fluid between the hot exchange chamber (5) and cold exchange chamber (6) in a reciprocating movement, and comprise at least one set of N pistons (40) positioned opposite the magnetocaloric elements (2) and subjected to a reciprocating translation movement by a driving mechanism (7) that comprises at least one actuating cam (70) driven by an actuator.
Specification