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Cold accumulation bed and magnetic refrigeration system

A magnetic refrigeration and cold storage technology, which is applied in refrigerators, refrigeration and liquefaction, household refrigeration devices, etc., can solve the problems of short cooling or heating time of the system, cannot realize magnetization and demagnetization at the same time, etc., and prolong the refrigeration time. or the effect of increasing the heating time and cooling time

Pending Publication Date: 2019-10-18
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defect that magnetization and demagnetization cannot be realized at the same time in the magnetic refrigeration system in the prior art, resulting in short cooling or heating time of the system, thereby providing a cold storage bed and a magnetic refrigeration system. system

Method used

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  • Cold accumulation bed and magnetic refrigeration system
  • Cold accumulation bed and magnetic refrigeration system
  • Cold accumulation bed and magnetic refrigeration system

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Experimental program
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Effect test

Embodiment 1

[0042] Such as Figure 2-5 Shown, the present invention provides a kind of cold storage bed, it comprises:

[0043] The first chamber 10 and the second chamber 20, the first chamber 10 and the second chamber 20 are separated by a heat insulating layer 33, and the first chamber 10 includes a first area 313 and a connected one. The second area 314 (separated by the grid 34, the grid 34 can prevent the magnetic working fluid from crossing but can allow the heat exchange fluid to pass through), and the first magnetic working medium is arranged in the first area 313, and the first magnetic working fluid is arranged in the first area 313. Second region 314 is provided with a second magnetic working fluid; and the second chamber 20 includes a connected third region 323 and a fourth region 324 (separated by a grid 34, the grid 34 can prevent the magnetic working fluid from crossing But it can allow the heat exchange fluid to pass through), and a third magnetic working medium is arran...

Embodiment 2

[0059] Preferably,

[0060] The first chamber 10 further includes a fifth area 315 and a sixth area 316 which are sequentially communicated with one end of the second area 314, and a fifth magnetic working medium is arranged in the fifth area 315, the A sixth magnetic working medium is provided in the sixth area 316; and the second chamber 20 further includes a seventh area 325 and an eighth area 326 which communicate with one end of the fourth area 324 in sequence, and in A seventh magnetic working substance is arranged in the seventh region 325, and an eighth magnetic working substance is arranged in the eighth region 326; and the fifth magnetic working substance and the eighth magnetic working substance are positive-effect magnetic substances. thermal material, and the sixth magnetic working fluid and the seventh magnetic working fluid are negative effect magnetocaloric materials;

[0061] And the fifth area 315, the sixth area 316, the seventh area 325, and the eighth are...

Embodiment 3

[0067] The present invention also provides a magnetic refrigeration system, which includes the cold storage bed described in any one of the preceding items, the first heat exchange fluid flows in the first chamber 10 , and the second heat exchange fluid flows in the second chamber 20 .

[0068] Due to the special structural form of the cold storage bed, the magnetic refrigeration system in the present invention contains positive effect magnetocaloric materials and reverse effect magnetocaloric materials, and can provide a magnetic field to half of the magnetic working medium in the cold storage bed, and the other half does not provide a magnetic field. The cold storage bed can achieve the following effects: 1. Realize the flow path with a single cold storage bed, which can be magnetized and demagnetized at the same time, the cooling time is doubled, and the magnetocaloric material absorbs and releases heat at the same time. 2. The amount of magnets used is less than half of th...

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Abstract

The invention provides a cold accumulation bed and a magnetic refrigeration system. The cold accumulation bed comprises a first chamber and a second chamber, wherein the first chamber comprises a first region and a second region, the second chamber comprises a third region and a fourth region, a first magnetic working medium and a fourth magnetic working medium both made of positive effect magneto-thermal materials are arranged in the first region and the fourth region respectively, and second magnetic working medium and third magnetic working medium both made of negative effect magneto-thermal materials are arranged in the second region and the third region respectively; and the cold accumulation bed is further provided with a first magnetic generating device, wherein the cold accumulation bed and the first magnetic generating device can move relative to each other, when being opposite to the first region and the third region, the first magnetic generating device is not opposite to the second region and the fourth region, and when being opposite to the second region and the fourth region, the first magnetic generating device is not opposite to the first region and the third region. According to the cold accumulation bed and the magnetic refrigeration system, magnetizing and demagnetizing effects on the magnetic working media can be realized at the same time, the refrigeratingtime or the heating time of the system is prolonged, and the problem that the refrigerating time of a flow path of the single cold accumulation bed is short is solved.

Description

technical field [0001] The invention belongs to the technical field of magnetic refrigeration, and in particular relates to a cold storage bed and a magnetic refrigeration system. 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 refrigerants, which has no damage to the ozone layer and no greenhouse effect. Magnetic refrigeration technology has developed rapidly in recent years, and its development prospects are favored by experts from various countries. [0003] Magnetic refrigeration technology is a technology that applies the magnetocaloric effect of magnetic materials to the field of refrigeration. The magnetocaloric effect is an inherent property of magnetic materials. It is the change of the magnetic entropy of the material itself caused by the change of the external magnetic field. Endoth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D3/00F25B21/00
CPCF25D3/00F25B21/00Y02B30/00
Inventor 王振雨罗胜杨蓉
Owner GREE ELECTRIC APPLIANCES INC
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