Magnetic refrigeration device

Abstract

The invention provides a magnetic refrigeration device. The magnetic refrigeration device comprises a magnetic field generator and cold storage beds (1), and the magnetic field generator forms an annular magnetic field generation area. The magnetic field generation area comprises magnetizing areas and demagnetizing areas which are alternately arranged in the circumferential direction, and at leasttwo cold storage beds (1) can be rotationally arranged in the magnetic field generation area and are arranged in the circumferential direction of the magnetic field generation area. The magnetic refrigeration device is provided with hot air ducts corresponding to the magnetizing areas and cold air ducts corresponding to the demagnetizing areas, and air flow exchanges heat with the cold storage beds (1) located in the magnetizing areas in the hot air ducts and exchanges heat with the cold storage beds (1) located in the demagnetizing areas in the cold air ducts. According to the magnetic refrigeration device, heat exchange can be directly conducted with airflow, heat exchange fluid and a loop of the heat exchange fluid are omitted, the structure of the magnetic refrigeration device is simplified, and the cost is reduced.

Description

technical field [0001] The present application relates to the technical field of magnetic refrigeration, in particular to a magnetic refrigeration device. Background technique [0002] The magnetic refrigeration device is a kind of equipment that utilizes the physical characteristics of the magnetocaloric material to refrigerate. Increase or decrease, when the magnetic field strength increases, the magnetic entropy of the material decreases, heat release, and the temperature rises, and when the magnetic field strength decreases, the magnetic entropy of the material increases, heat absorption, and temperature decrease. Therefore, a magnetic refrigeration device generally needs to have: a changing magnetic field, a magnetic regenerator (for placing magnetocaloric materials), a heat transfer fluid, a cold-end heat exchanger, a hot-end radiator, and supporting power components. [0003] Since the cooling / heating process does not require refrigerant and does not produce other po...

AI Technical Summary

Problems solved by technology

However, the magnetic refrigerators at this stage are often complex in structure, bulky, and have many internal system components. It is necessary to use heat exchange fluid to flow through the magnetic working medium bed to contact and exchange heat with the magnetic working medium inside, and then flow through the heat exchange fluid. The heater exchanges heat with the outside world to heat / cool the outside world, so fluid pipelines are required, the pipelines are complicated, the parts of the whole machine are arranged messily, and the cost is high

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