Magnetic refrigeration device and magnetic heating module thereof

Abstract

Disclosed are a magnetic refrigeration device and a magnetic heating module thereof. The magnetic refrigeration device comprises a magnetic heating module and a magnet unit. The magnet unit reciprocates to act on different magnetic fields for the magnetic heating module. The magnetic heating module comprises a base, first magnetic heating material, second magnetic heating material and a heat insulation structure. The first and second magnetic heating materials are disposed in the base. The heat insulation structure is disposed between the first and second magnetic heating materials. Heat transfer fluid flows through the first and second magnetic heating materials so as to transfer heat between low temperature and high temperature ends of the magnetic heating module. The multiple different magnetic heating materials are disposed in the magnetic heating module, the heat insulation structure is disposed between the different magnetic heating materials, and accordingly heat transfer between the different magnetic heating materials can be avoided effectively and the magnetic heating module is widely applicable to various magnetic refrigeration devices.

Description

technical field [0001] The invention relates to a magnetic refrigeration device, in particular to a magnetic refrigeration device with different magnetic-caloric materials and a magnetic-caloric module thereof. Background technique [0002] Since the magnetic cooling device does not need to use a specific refrigerant or compressor, it is not only simpler in structure than traditional refrigeration and air-conditioning equipment, but also does not generate noise pollution. On the other hand, the magnetic refrigeration device has the advantages of low energy consumption and low maintenance cost, so it has gradually become an important development project in the technical field of refrigeration and air conditioning. [0003] see figure 1 In 2006, International Journal of Refrigeration, Volume 29, pages 1327-1331, introduced a technology about active magnetic refrigeration (active magnetic regeneration, AMR). In the aforementioned literature, Gd 0.92 Y 0.08 、Gd 0.84 Dy 0.16...

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Problems solved by technology

[0004] It should be understood that the Curie temperature of each magnetocaloric material is usually its optimum operating temperature. However, when different magnetocaloric materials are placed together in series, it is very easy to follow the series direction of the magnetocaloric materials ( like figure 1 The shown central axis A direction) generates heat conduction, which will cause the temperature gradient (temperature gradient) to be uniformed, which will lead to a decrease in the overall efficiency of the magnetic refrigeration device

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