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Magnetic field generator and magnetic refrigerator

A technology of magnetic field generators and magnetic refrigerators, which is applied in refrigerators, refrigeration and liquefaction, and machines using electric/magnetic effects, etc., which can solve problems such as difficult assembly, complex magnetic circuit structure, and bulky magnets, and reduce assembly costs. Difficulty, the effect of reducing complex structures

Pending Publication Date: 2019-11-19
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The magnetic field device is divided into rotary type and reciprocating type. For the rotary type magnet device, most of them are pure permanent magnet Halbach structure, the magnet is bulky, the driving power consumption is large when rotating, and most of the magnetic circuit structures are complex and difficult to assemble.

Method used

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  • Magnetic field generator and magnetic refrigerator
  • Magnetic field generator and magnetic refrigerator
  • Magnetic field generator and magnetic refrigerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] An embodiment of the present application provides a magnetic field generator, which is used to generate an alternating magnetic field for a magnetic refrigerator. figure 1 The exploded structure diagram of the magnetic field generator provided by this embodiment is given; figure 2 gives figure 1 The structural reference diagram of the permanent magnet assembly; image 3 gives figure 1 Cross-sectional view and internal magnetic circuit diagram of the medium magnetic field generator; Figure 4 A schematic diagram of the adding and demagnetizing process of the regenerator in the present application is provided; Figure 5 A schematic diagram of the structure of the coil in this application is given; Image 6 A schematic diagram of another structure of the permanent magnet assembly in this application is given.

[0049] Such as figure 1 As shown, the magnetic field generator includes a shaft 1, an electromagnetic assembly 2 and a permanent magnet assembly 3, wherein the...

Embodiment 2

[0061] Figure 7 A top view of a magnetic field generator provided in this embodiment is given; Figure 8 A connection diagram of the shaft and the permanent magnet is given; Figure 9 Another connection diagram of the shaft and the permanent magnet is given; Figure 10 A top view of a magnetic field generator provided in the embodiment is provided; Figure 11 gives Figure 7 or Figure 10 Cross-sectional view and internal magnetic circuit diagram of the medium magnetic field generator.

[0062] Such as Figure 7 As shown, the magnetic field generator includes a shaft 1, an electromagnetic assembly 2 and a permanent magnet assembly, wherein the electromagnetic assembly 2 is provided in multiple groups, and each group of electromagnetic assemblies 2 includes a plurality of coils 201 distributed around the circumference of the shaft 1. Different electromagnetic assemblies 2 The coils 201 between them are arranged one by one along the direction parallel to the shaft 1; the ...

Embodiment 3

[0067] This embodiment provides a magnetic refrigerator, the structure of which includes the magnetic field generator provided in Embodiment 1 or 2 of the present application. A regenerator 7 is arranged in the air gap, and the regenerator is filled with magnetic working fluid.

[0068] The magnetic working medium can be selected as a positive effect magnetic material, which has a heating effect when magnetized, and a cooling effect when demagnetized; the magnetic working medium can also be selected as a negative effect magnetic material, which has a cooling effect when magnetized. Effect, it will have a heating effect during demagnetization. Taking the magnetic working medium of positive effect magnetic material as an example, in the specific working process, the regenerator in the magnetized area will have a heating effect, and at this time the fluid in this part of the regenerator leads to the heat exchanger at the hot end, and the other is in the The fluid in the cold sto...

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Abstract

The invention relates to the technical field of air conditioning devices, in particular to a magnetic field generator and a magnetic refrigerator. The magnetic field generator comprises a shaft, a plurality of groups of electromagnetic components and permanent magnet components, each group of electromagnetic components comprises a plurality of coils distributed around the circumference of the shaft, and the coils among different electromagnetic components are arranged in a one-to-one opposite manner in the direction parallel to the shaft; each permanent magnet component comprises a permanent magnet arranged between every two adjacent electromagnetic components and can freely rotate around the axis of the shaft, the permanent magnets have the state of directly facing the coils and the stateof deviating from the coils in the rotating process, and air gaps are formed between the permanent magnets and the electromagnetic components. The magnetic field generator simplifies the complex structure of a permanent magnet magnetic circuit, and reduces the assembly difficulty. According to the electromagnetic components, a magnetizing area and a demagnetizing area are formed at an air gap through on-off of the current in the electromagnetic coils, and meanwhile, the electromagnetic coils attract the permanent magnets to enable the permanent magnets to rotate to the position right oppositeto the electromagnetic coils to strengthen a magnetic field, and therefore, the magnetizing area is formed.

Description

technical field [0001] The present application relates to the technical field of air conditioning devices, and in particular, to a magnetic field generator and a magnetic refrigerator including the same. Background technique [0002] The current world energy issues are attracting increasing attention, and air-conditioning consumes a large proportion of electricity. Therefore, some new refrigeration technologies with high efficiency, energy saving and pollution-free have attracted widespread attention. Among them, magnetic refrigeration is one of the most promising technologies to replace compression refrigeration. [0003] Magnetic refrigeration uses the magnetocaloric effect of the magnetic working medium. When the magnetic working medium is in the magnetic field, a magnetic phase transition occurs, the magnetic entropy decreases, and heat is released; when the magnetic working medium removes the magnetic field, the magnetic entropy increases and heat is absorbed. In order ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F7/08F25B21/00
CPCH01F7/081F25B21/00Y02B30/00
Inventor 张谱辉罗胜杨蓉
Owner GREE ELECTRIC APPLIANCES INC
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