A magnetocaloric generator with increased calorific power and economic profitability comprising integrated means to force circulation of thermal fluid.

Abstract

The present invention relates to a generator (I) comprising at least one thermal stage (10) fitted with active elements (2) made of a magnetocaloric material and arranged around a central axis (A) and a magnetic arrangement (3) supported by a drive shaft (30) merged with the central axis (A) rotated by an actuator to subject the active elements (2) to a variation in magnetic field. This generator (1) comprises on either side of the thermal stage (10) a set of pistons (70) associated with a fluid tank (74) to push the heat transfer fluid through the active elements (2), these pistons being driven into reciprocating translation in chambers (73) by at least one cam (71) coupled in rotation to the drive shaft (30). This generator (1) is characterized in that it comprises means of forced circulation (8a) fitted with small planet gears (80) arranged around the central axis (A), supported by the body (72) of the generator (1) and meshing with an inner crown gear (81) integral with the cam (71), with each gear (80) forming a mini gear pump that mixes the heat transfer fluid and places it in forced circulation in the said tanks (74) and the said chambers (73).