Magnetic refrigeration system and refrigeration device

Abstract

The invention discloses a magnetic refrigeration system and a refrigeration device. The magnetic refrigeration system comprises a fluid driving mechanism, a first heat exchange unit; a second heat exchange unit and a magnetic refrigeration unit, wherein the first heat exchange unit, the magnetic refrigeration unit and the second heat exchange unit sequentially communicate in series; the end, far away from the magnetic refrigeration unit, of the first heat exchange unit communicates with the fluid driving mechanism; the end, far away from the magnetic refrigeration unit, of the second heat exchange unit communicates with the fluid driving mechanism; the magnetic refrigeration unit comprises at least two parallel magnetic refrigeration structures, each magnetic refrigeration structure comprises at least two magnetic working medium beds capable of switching magnetic states, and the curie temperature of the magnetic working medium bed of at least one magnetic refrigeration structure is different from the curie temperature of the magnetic working medium bed of the other magnetic refrigeration structure; and the fluid driving mechanism can drive heat exchange fluid to move back and forthalong the first heat exchange unit, the magnetic refrigeration unit and the second heat exchange unit. The magnetic refrigeration system can keep good refrigeration efficiency in a wide temperature range.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a magnetic refrigeration system and a refrigeration device. Background technique [0002] Due to the adverse impact of the current mainstream vapor compression technology on the environment, people gradually shift their attention to the application of other green new refrigeration technologies. Magnetic refrigeration technology undoubtedly has obvious advantages due to its environmental protection and energy saving characteristics. [0003] However, for a specific magnetic refrigerator, the Curie temperature of the magnetocaloric material is relatively fixed, and the fixed Curie temperature makes these magnetocaloric materials only produce a large magnetocaloric effect near their Curie temperature. As a result, the magnetocaloric material in the current magnetic refrigeration system has a narrow environmental temperature range and cannot be used in an environment...

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Problems solved by technology

[0004] Based on this, in view of the problem that the magnetic thermal material of the traditional magnetic refrigerator has a narrow environmental temperature range and cannot be used in an environment with large temperature changes, a magnetic refrigeration system and refrigeration device are proposed. The system can maintain good refrigeration efficiency in a wide temperature range and can be used in an environment with large temperature changes; the refrigeration device includes the above-mentioned magnetic refrigeration system, so the refrigeration device can maintain good refrigeration efficiency in a wide temperature range High cooling efficiency, can be used in environments with large temperature changes

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