Permanent magnetism body system for rotary magnetic refrigeration

A technology of permanent magnets and magnets, applied in the field of permanent magnet magnet systems, can solve the problem that the circumferential dimension of the magnetic working fluid area cannot exceed 45 degrees, the circumferential dimension of the magnetic pole piece cannot exceed 45 degrees, and the heat exchange system of the magnetic refrigerator is complex, etc. problem, to achieve the effect of simple magnetic working medium processing and heat insulation, light weight and simple structure
CN101373113BInactive Publication Date: 2010-12-08INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Publication Date
2010-12-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a rotary magnetic refrigeration permanent magnet system. A stator is a hollow cylindrical permanent magnet based on the Halbach rotation principle. The hollow cylindrical magnet is formed by assembling permanent magnetic blocks with the central shaft on the cross section of the magnet. The magnetizing directions of the permanent magnetic blocks are determined by the Halbach rotation principle. A rotor mainly comprises magnetic conductive iron cores, a magnetic working substance and a rotating shaft. A rotator shaft is positioned in the central rotation position of therotor. The central lines of two sections of rotator shaft are overlapped with the geometric center line of the rotor. Two magnetic conductive iron cores of the rotor are cylindrical bodies with bow-shaped cross sections, connected with the rotating shaft as a whole through a connection bracket and sleeved on the rotating shaft. The magnetic working substance is tightly fixed between the two magnetic conductive iron cores and rotates along with the magnetic conductive iron cores. The magnetic working substance is a cuboid. A certain clearance is left between the stator and the rotor.
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Description

technical field

[0001] The present invention relates to a permanent magnet system, in particular to a permanent magnet system for rotating magnetic refrigeration equipment. Background technique

[0002] Magnetic refrigeration is a green and environmentally friendly new refrigeration technology. Compared with traditional vapor compression refrigeration, magnetic refrigeration uses magnetic materials as the refrigerant, which has no damage to the ozone layer and no greenhouse effect. The newly developed magnetic refrigerator uses a water-based heat transfer fluid to minimize the global warming effect.

[0003] Magnetic refrigeration technology is a refrigeration technology based on the principle of magnetocaloric effect. The magnetocaloric effect means that when the magnetic working medium (magnetic refrigeration material) is magnetized by the magnetic field, the magnetic order of the system is strengthened, and heat is released to the outside, and then demagnetized, the mag...

Claims

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