Patent ID: 8378769
Filing Date: 2013-02-19
Classification: F25B,H01F,Y02B,Y10T

Abstract:
1. A magnetic field generator ( 1 , 10 , 20 , 30 , 40 , 50 ) for a magnetocaloric thermal appliance, the magnetic field generator ( 1 , 10 , 20 , 30 , 40 , 50 ) comprising at least one magnetising structure ( 2 ) creating a constant magnetic field in at least one air gap ( 3 ) in which at least one magnetocaloric element ( 4 ) is arranged, the magnetising structure ( 2 ) containing first ( 5 ) and second ( 6 ) magnetic poles arranged facing each other on each side of a symmetry plane (P) and each made up of an assembly of permanent magnets ( 7 , 8 ) and of a ferromagnetic element ( 9 ), the ferromagnetic element ( 9 ) of each of the first and the second magnetic poles ( 5 , 6 ) presenting one face (F 1 ) protruding with reference to the assembly forming the first and second magnetic poles ( 5 , 6 ) and the ferromagnetic elements ( 9 ) of the first ( 5 ) and second ( 6 ) magnetic poles being arranged face to face with a distance forming the at least one air gap ( 3 , 13 , 23 ) of the magnetising structure ( 2 ), wherein a further permanent magnet ( 14 ) is placed in the plane (P), between the first ( 5 ) and second ( 6 ) magnetic poles and forms an air gap ( 13 , 23 ) with each of the two corresponding faces (F 1 ) of the ferromagnetic elements ( 9 ) of the first ( 5 ) and second ( 6 ) magnetic poles.