Magnetic field generator and magnetocaloric device comprising said magnetic field generator
A magnetic field generator and magnetic field technology, which is applied in the direction of measuring devices, lighting and heating equipment, instruments, etc., can solve the problems of impracticality, difficult and complex geometric structure of permanent magnets, and increasing the component cost of permanent magnets, etc.
Inactive Publication Date: 2012-05-30
高等工程及管理沃州(HEIG-VD)公司
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Problems solved by technology
However, the permanent magnets used have complex geometries that are difficult to implement, which increases the cost of the assembly of the permanent magnets
[0007] Displacement of such permanent magnet structures is therefore not achievable in the more limited range of applications, and in particular in the field of magnetocaloric generators
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Embodiment Construction
[0032] figure 1 A basic embodiment of a magnetic field generator 10 according to the invention is shown. The magnetic field generator 10 comprises in this case an assembly 20 of anisotropic permanent magnets 30 arranged to generate magnetic flux and to define a magnetic gap 40 inside which the magnetic flux is concentrated. The assembly 20 of permanent magnets consists of two elements 21 and 22 mounted facing each other, symmetrically about an axis A-A perpendicular to the transverse axis B-B of the magnetic gap 40 . Elements 21 and 22 are identical and arranged facing each other. In the example shown, each element comprises five permanent magnets 30 , the number of which can vary according to the embodiment designed, the permanent magnets being arranged according to two opposing circular arcs. The cross-section of these permanent magnets 30 is in this case substantially rectangular, so that there is a space between two adjacent magnets with a substantially triangular cross-...
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The invention relates to a magnetic field generator (10) comprising an assembly (20) of anisotropic permanent magnets (30) defining an air gap (40) inside which the magnetic flux concentrates. Said assembly comprises a first element (21) and a second element (22) mounted opposite one another and including at least three permanent magnets (30). The two elements (21) and (22) are arranged substantially in the same plane and respectively surrounded by closing mechanisms (51, 52) of the magnetic field. The permanent magnets (30) of the first (21) and second (22) elements are made up of parallelepipedal blocks, arranged substantially in an arc of circle according to three areas: a central area (60) opposite the air gap (40), a first side area (70) on one side of the central area (60), and a second side area (80) on the other side of the central area (60).; The permanent magnets (30) of the first (70) and second (80) side areas have opposite directions of magnetisation. Two parts (91) and (92) of a ferromagnetic material forming a magnetic flux concentrator (90) are arranged on either side of the air gap (40).
Description
technical field [0001] The present invention relates to a magnetic field generator comprising at least one assembly of anisotropic permanent magnets arranged to generate a magnetic flux and to define a magnetic gap, the flux concentrated at Inside the magnetic gap, [0002] - said assembly of permanent magnets comprises a first element and a second element mounted facing each other symmetrically with respect to an axis perpendicular to the transverse axis of said magnetic gap, [0003] - each of said first and second elements comprises at least three permanent magnets, and [0004] - said first element and said second element of said assembly of permanent magnets are arranged substantially in the same plane and are respectively at least partially surrounded by magnetic field closure means. [0005] The object of the present invention is also a magnetocaloric device comprising: at least one magnetic field generator according to the present invention and a magnetocaloric eleme...
Claims
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IPC IPC(8): G01R33/383H01F7/02
CPCH01F7/0278F25B2321/0021G01R33/383F25B2321/0023
Inventor O·萨里N·阿尔伯
Owner 高等工程及管理沃州(HEIG-VD)公司