Thermal generator with magnetocaloric material and incorporated heat transfer fluid circulation means

摘要

A heat generator (1) having at least one thermal module (10) that has N adjacent magnetocaloric elements (2) arranged in a circle around a central axis (A) and is subjected to a varying magnetic field caused by magnetic devices (3). The magnetocaloric elements (2) are associated with N pistons (40) subjected to a 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.

主权项

1. A heat generator (1, 100) comprising magnetocaloric elements (2) and magnetic devices (3) arranged to alternately subject the magnetocaloric elements (2) to a variation in a 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 heat energy (calories) and cold energy (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 heat generator (1, 100), means for circulating (4) the heat transfer fluid between the magnetocaloric elements (2) and the hot and cold exchange chambers (5, 6), the heat generator comprising at least one thermal module (10-13) comprising at least one set of a number of adjacently arranged magnetocaloric elements (2), and 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 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 heat transfer fluid between the hot (5) and cold (6) exchange chambers in a reciprocating movement, and comprise
at least a same number of pistons (40) as the number of adjacently arranged magnetocaloric elements (2),the pistons (40) are positioned opposite the magnetocaloric elements (2), andthe pistons (40) are subjected to a reciprocating translation movement by a driving mechanism (7) that comprises at least one actuating cam (70) driven by an actuator.