CN110953761A - Magnetic refrigeration system and magnetic refrigerator with same - Google Patents

Abstract

The invention provides a magnetic refrigeration system and a magnetic refrigerator with the same, wherein the magnetic refrigeration system comprises: the tray is rotatably arranged; the first magnet assembly is arranged on the tray so that the tray drives the first magnet assembly to rotate; the first magnet assembly has a first air gap; the second magnet assembly is arranged on the tray so that the tray drives the second magnet assembly to rotate; the second magnet assembly is arranged at a distance from the first magnet assembly to form a second air gap; the first cold accumulation bed is arranged in the first air gap so as to excite and demagnetize the magnetic working medium in the first cold accumulation bed when the first magnet assembly rotates relative to the first cold accumulation bed; and the second cold accumulation bed is arranged in the second air gap so as to excite and demagnetize the magnetic working medium in the second cold accumulation bed when the first magnet assembly and the second magnet assembly rotate relative to the second cold accumulation bed. The magnetic refrigeration system solves the problem of low utilization rate of the magnet in the magnetic refrigeration system in the prior art.

Description

Magnetic refrigeration system and magnetic refrigerator with same

Technical Field

The invention relates to a magnetic refrigeration technology, in particular to a magnetic refrigeration system and a magnetic refrigerator with the same.

Background

The magnetic refrigeration technology is a solid refrigeration mode based on the magnetocaloric effect, adopts environment-friendly media such as water and the like as heat transfer fluid, and has the characteristics of zero GWP, zero ODP, intrinsic high efficiency, low noise, low vibration and the like; compared with the field of low-temperature refrigeration, the magnetic refrigeration has wider application prospect in the room temperature range, such as the application in the fields of household refrigerators, air conditioners, medical and health care industries and the like. Therefore, in recent ten years, the research and development of the room temperature magnetic refrigeration technology are generally regarded by all countries around the world, and some achievements are obtained for raising the world's convenience.

The magnetic refrigerator mainly comprises five parts: the device comprises a magnetic field system for generating a variable magnetic field, an active magnetic working medium bed (used for placing magnetocaloric materials), a cold-hot end heat exchanger, a heat exchange fluid circulation passage and a matched power driving device. The magnetic field system is divided into: electromagnets, permanent magnets, and superconducting magnets. In order to make room-temperature magnetic refrigeration practical and commercial, permanent magnets are often used in the industry. Among them, the permanent magnet magnetic refrigerator is classified into a rotary type and a reciprocating type according to the movement mode, and the rotary type is selected for improving the efficiency of the magnetic refrigerator, compared with the reciprocating type magnetic refrigerator. The rotary magnetic refrigerator is divided into a rotary magnet type and a rotary working medium bed type, and the rotary working medium bed type magnetic refrigerator relates to a dynamic sealing device which is made for solving the problems of mechanical friction loss and fluid leakage of a pipeline winding, so that the rotation of a magnetic field on a static magnetic heating material (working medium bed) is a more effective solution, and a permanent magnetic rotary magnetic refrigerator is preferred. The magnet and the cold accumulation bed are key parts of the magnetic refrigerator and determine the overall performance and efficiency of the magnetic refrigerator.

However, the magnet of the existing magnetic refrigerator occupies the main volume size of the whole machine, the magnet has larger volume and lower utilization rate, and the unit volume is too large; meanwhile, if the magnet is a rotating part, the overlarge mass and volume can cause the overlarge motor power of a mechanical system, and the electric energy is wasted. In addition, the magnet is also the most expensive part in the magnetic refrigerator, and the reduction of the use amount of the magnet is also beneficial to reducing the cost of the whole machine.

Disclosure of Invention

The invention mainly aims to provide a magnetic refrigeration system and a magnetic refrigerator with the same, so as to solve the problem of low utilization rate of a magnet in the magnetic refrigeration system in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a magnetic refrigeration system including: the tray is rotatably arranged; the first magnet assembly is arranged on the tray so that the tray drives the first magnet assembly to rotate; the first magnet assembly has a first air gap; the second magnet assembly is arranged on the tray so that the tray drives the second magnet assembly to rotate; the second magnet assembly is arranged at a distance from the first magnet assembly to form a second air gap; the first cold accumulation bed is arranged in the first air gap so as to excite and demagnetize the magnetic working medium in the first cold accumulation bed when the first magnet assembly rotates relative to the first cold accumulation bed; and the second cold accumulation bed is arranged in the second air gap so as to excite and demagnetize the magnetic working medium in the second cold accumulation bed when the first magnet assembly and the second magnet assembly rotate relative to the second cold accumulation bed.

Further, the first air gap extends in a horizontal direction and the second air gap extends in a vertical direction.

Further, the first magnet assembly includes a first magnet and a second magnet spaced apart to form a first air gap, the second magnet being disposed above the first magnet.

Further, the magnetic refrigeration system further includes: the first magnetic gathering plate is arranged on the end face, close to the second magnet, of the first magnet; and/or the second magnetism gathering plate is arranged on the end face, close to the first magnet, of the second magnet.

Further, the first magnet assembly further comprises a third magnet, the third magnet is provided with a first end face and a second end face which are oppositely arranged along the radial direction of the tray, the first end face is connected with the second magnet, and the second end face and the second magnet assembly are oppositely arranged to form a second air gap.

Further, the third magnet has a third end face and a fourth end face which are oppositely arranged in the vertical direction; the first magnet assembly further comprises a fourth magnet, and the fourth magnet is clamped between the first magnet and the third magnet; the fourth magnet is provided with a first connecting surface and a second connecting surface, the first connecting surface is connected with the first magnet, and the second connecting surface is connected with the third end surface.

Furthermore, the first magnet is provided with a fifth end surface and a sixth end surface which are oppositely arranged along the vertical direction, and the fifth end surface is arranged on one side of the sixth end surface, which is far away from the second magnet; the third magnet is also provided with a third connecting surface, and one end of the third connecting surface, which is connected with the first connecting surface, is connected with the fifth end surface; one end of the third connecting surface, which is connected with the second connecting surface, is connected with the second end surface; and the third connecting surface is provided with a first magnetic resistance plate.

Further, the magnetic refrigeration system further includes: the third magnetic plate is arranged on the second end face; and/or a fourth magnetism gathering plate is arranged on the end face, opposite to the second end face, of the second magnet assembly.

Further, the tray includes a rotating shaft, and the second magnet assembly is connected to the rotating shaft.

Further, the tray still includes the rib, and first magnet is connected with the rib.

Further, the first magnet assembly is plural; the second magnet assemblies are multiple, each second magnet assembly is connected with the rotating shaft, and the second magnet assemblies are arranged around the circumferential direction of the rotating shaft; the plurality of first magnet assemblies and the plurality of second magnet assemblies are arranged in a one-to-one correspondence manner, and a second air gap is formed between each first magnet assembly and the corresponding second magnet assembly; the first cold accumulation beds are arranged in one-to-one correspondence with the first magnet assemblies, and each first cold accumulation bed is arranged in a first air gap of the corresponding first magnet assembly; the second cold accumulation beds are arranged in one-to-one correspondence with the second air gaps, and each second cold accumulation bed is arranged in the corresponding second air gap.

Further, a second magnetic resistance plate is arranged between every two adjacent second magnet assemblies.

Furthermore, the number of the ribs is multiple, the plurality of ribs and the plurality of first magnet assemblies are arranged in a one-to-one correspondence manner, and each first magnet assembly is arranged on the corresponding rib; the magnetic refrigeration system further includes: the plurality of sub magnetic blocks are connected with the rotating shaft, the plurality of sub magnetic blocks and the plurality of ribs are arranged in a one-to-one correspondence mode, and each sub magnetic block is connected with the corresponding rib.

Further, the magnetic refrigeration system further includes: the first cold accumulation bed and the second cold accumulation bed are both fixedly arranged on the cold accumulation bed support.

According to another aspect of the present invention, there is provided a magnetic refrigerator comprising a magnetic refrigeration system, wherein the magnetic refrigeration system is the magnetic refrigeration system described above.

The invention relates to a magnetic refrigeration system, in particular to a magnetic field generating device of a rotary magnetic refrigerator, which comprises a tray, a first magnet assembly, a second magnet assembly, a first cold accumulation bed and a second cold accumulation bed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic block diagram of an embodiment of a magnetic refrigeration system according to the present invention;

FIG. 2 shows a schematic of the construction of a first magnet assembly of a magnetic refrigeration system according to the present invention;

FIG. 3 shows a schematic of the construction of a second magnet assembly of the magnetic refrigeration system according to the present invention;

FIG. 4 illustrates a top view of a second magnet assembly of the magnetic refrigeration system according to the present invention;

FIG. 5 shows an enlarged partial view of a magnetic refrigeration system according to the present invention;

FIG. 6 shows a schematic of the construction of a first magnet assembly and a second magnet assembly of a magnetic refrigeration system according to the present invention;

FIG. 7 illustrates a schematic structural view of a first magnet and a tray of a magnetic refrigeration system according to the present invention;

fig. 8 illustrates a top view of a second magnet assembly and a tray of a magnetic refrigeration system according to the present invention.

Wherein the figures include the following reference numerals:

10. a tray; 11. a rotating shaft; 12. ribs; 20. a first magnet assembly; 21. a first air gap; 22. a first magnet; 23. a second magnet; 24. a third magnet; 25. a fourth magnet; 30. a second magnet assembly; 31. a second air gap; 40. a first cold storage bed; 50. a second cold storage bed; 60. a first magnetic flux collecting plate; 70. a second poly-magnetic plate; 80. a first magnetoresistive plate; 90. a third magnetic focusing plate; 100. a fourth magnetic flux collecting plate; 110. a second magnetic resistance plate; 120. dividing magnetic blocks; 130. a cold accumulation bed support.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The present invention provides a magnetic refrigeration system, please refer to fig. 1 to 8, comprising: a tray 10, the tray 10 being rotatably provided; the first magnet assembly 20 is arranged on the tray 10, so that the tray 10 drives the first magnet assembly 20 to rotate; the first magnet assembly 20 has a first air gap 21; the second magnet assembly 30 is arranged on the tray 10, so that the tray 10 drives the second magnet assembly 30 to rotate; the second magnet assembly 30 is spaced from the first magnet assembly 20 to form a second air gap 31; a first cold storage bed 40 disposed in the first air gap 21 to excite and demagnetize a magnetic medium in the first cold storage bed 40 when the first magnet assembly 20 rotates relative to the first cold storage bed 40; and a second cold storage bed 50 disposed in the second air gap 31 to excite and demagnetize the magnetic medium in the second cold storage bed 50 when the first and second magnet assemblies 20 and 30 rotate relative to the second cold storage bed 50.

The invention relates to the field of magnetic refrigeration, in particular to a magnetic field generating device of a rotary magnetic refrigerator, which comprises a tray 10, a first magnet assembly 20, a second magnet assembly 30, a first cold accumulation bed 40 and a second cold accumulation bed 50, wherein the magnetic refrigeration system is provided with two air gaps, and the two cold accumulation beds are respectively placed in the two air gaps, so that the magnetic entropy change efficiency is doubled under the condition of the same magnet consumption, the magnet utilization rate is further improved, the mass of the magnet assembly is smaller, the structure is more compact, the overall cost of the magnetic refrigerator can be effectively reduced, and the magnetic refrigerator has great beneficial effects on industrialization and commercialization of the magnetic refrigerator.

Preferably, the first air gap 21 extends in a horizontal direction and the second air gap 31 extends in a vertical direction. The arrangement enables the magnetic refrigeration system to excite and demagnetize the two cold storage beds from two directions, so that the space utilization rate is higher, and the structure of the magnetic refrigeration system is more compact.

Preferably, the first air gap 21 extends in the radial direction of the tray.

In the present embodiment, the first magnet assembly 20 includes a first magnet 22 and a second magnet 23, the first magnet 22 and the second magnet 23 are spaced apart to form the first air gap 21, and the second magnet 23 is disposed above the first magnet 22.

Preferably, the first magnet 22 is plural, and the plural first magnets 22 are sequentially connected in a radial direction of the tray. Preferably, there are two first magnets 22.

Preferably, the second magnet 23 is plural, and the plural second magnets 23 are sequentially connected in a radial direction of the tray. Preferably, the number of the second magnets 23 is two.

In this embodiment, the magnetic refrigeration system further includes: a first magnetism gathering plate 60, wherein the first magnetism gathering plate 60 is arranged on the end face, close to the second magnet 23, of the first magnet 22; and/or a second poly-magnetic plate 70, the second poly-magnetic plate 70 being arranged on an end face of the second magnet 23 adjacent to the first magnet 22. This arrangement causes the magnetic flux to concentrate in one region.

In the present embodiment, the first magnet assembly 20 further includes a third magnet 24, the third magnet 24 has a first end surface and a second end surface which are oppositely arranged along the radial direction of the tray, the first end surface is connected with the second magnet 23, and the second end surface is oppositely arranged with the second magnet assembly 30 to form a second air gap 31.

Preferably, the third magnet 24 is plural, and the plural third magnets 24 are sequentially connected in the vertical direction. Preferably, there are two third magnets 24.

In the present embodiment, the third magnet 24 has a third end face and a fourth end face that are oppositely disposed in the vertical direction; the first magnet assembly 20 further comprises a fourth magnet 25, the fourth magnet 25 being sandwiched between the first magnet 22 and the third magnet 24; the fourth magnet 25 has a first connection surface and a second connection surface, the first connection surface is connected with the first magnet 22, and the second connection surface is connected with the third end surface.

In the present embodiment, the first magnet 22 has a fifth end face and a sixth end face which are oppositely arranged in the vertical direction, and the fifth end face is arranged on the side of the sixth end face away from the second magnet 23; the third magnet 24 further has a third connection surface, and one end of the third connection surface connected to the first connection surface is connected to the fifth end surface; one end of the third connecting surface, which is connected with the second connecting surface, is connected with the second end surface; wherein the third connection surface is provided with a first magnetoresistive plate 80.

In specific implementation, the cross section of the third magnet 24 along the radial direction of the tray is triangular; preferably, the cross section of the third magnet 24 along the radial direction of the tray is a right triangle, the first connection surface and the second connection surface are arranged perpendicularly, and the third connection surface and the first connection surface and the second connection surface are arranged obliquely.

In specific implementation, one end of the first magnetoresistive plate 80 is connected to the third magnetoresistive plate 90.

In this embodiment, the magnetic refrigeration system further includes: a third magnetic shunt 90, the third magnetic shunt 90 being arranged on the second end face; and/or a fourth magnetic convergence plate 100, the fourth magnetic convergence plate 100 being disposed on an end surface of the second magnet assembly 30 disposed opposite to the second end surface. This arrangement causes the magnetic flux to concentrate in one region.

In particular implementation, the second magnet assembly 30 is a fifth magnet; the first magnet, the second magnet, the third magnet, the fourth magnet and the fifth magnet are all permanent magnets.

In the present embodiment, the tray 10 includes a rotation shaft 11, and the second magnet assembly 30 is coupled to the rotation shaft 11.

In this embodiment, the tray 10 further includes ribs 12, and the first magnet 22 is connected to the ribs 12.

In specific implementation, the rotating shaft 11 and the ribs 12 are made of high-permeability materials so as to play a role of magnetic conduction.

In specific implementation, the tray 10 includes a support ring, a rotating shaft 11 and ribs 12, one end of each rib 12 is connected to the rotating shaft 11, and the other end of each rib 12 is connected to the support ring.

In the present embodiment, the first magnet assembly 20 is plural; the number of the second magnet assemblies 30 is multiple, each second magnet assembly 30 is connected with the rotating shaft 11, and the second magnet assemblies 30 are arranged around the circumference of the rotating shaft 11; the plurality of first magnet assemblies 20 and the plurality of second magnet assemblies 30 are arranged in a one-to-one correspondence manner, and a second air gap 31 is formed between each first magnet assembly 20 and the corresponding second magnet assembly 30; the number of the first cold storage beds 40 is plural, the plural first cold storage beds 40 are arranged in one-to-one correspondence with the plural first magnet assemblies 20, and each first cold storage bed 40 is arranged in the first air gap 21 of the corresponding first magnet assembly 20; the number of the second cold storage beds 50 is plural, the plural second cold storage beds 50 are provided in one-to-one correspondence with the plural second air gaps 31, and each second cold storage bed 50 is provided in the corresponding second air gap 31.

In the present embodiment, a second magnetic resistance plate 110 is disposed between each two adjacent second magnet assemblies 30.

In the present embodiment, there are a plurality of ribs 12, the plurality of ribs 12 are disposed in one-to-one correspondence with the plurality of first magnet assemblies 20, and each first magnet assembly 20 is disposed on a corresponding rib 12; the magnetic refrigeration system further includes: the plurality of sub-magnetic blocks 120 are connected with the rotating shaft 11, the plurality of sub-magnetic blocks 120 are arranged in one-to-one correspondence with the plurality of ribs 12, and each sub-magnetic block 120 is connected with the corresponding rib 12.

In this embodiment, the magnetic refrigeration system further includes: the cold accumulation bed support 130, the first cold accumulation bed 40 and the second cold accumulation bed 50 are all fixedly arranged on the cold accumulation bed support 130.

In one embodiment, the first magnet assembly 20, the second magnet assembly 30, the first cold storage bed 40, the second cold storage bed 50, the ribs 12, and the magnet-dividing blocks 120 are all three.

In specific implementation, as shown in fig. 2, the first magnet assembly 20 is composed of a plurality of first, second, third and fourth magnets magnetized in the directions shown in the figure, and a first magnetic convergence plate 60, a second magnetic convergence plate 70, a first magnetic resistance plate 80 and a third magnetic convergence plate 90. The first magnet assembly 20 is mounted on the tray 10 to be continuously rotated by the rotation shaft 11.

In specific implementation, as shown in fig. 3 and 4, the number of the second magnet assemblies 30 is three, and the three second magnet assemblies 30 are circumferentially distributed around the rotating shaft; the three second magnet assemblies 30 are provided with arc grooves with the axis of the rotating shaft as the center of a circle on the sides close to the rotating shaft, the three second magnet assemblies 30 are surrounded into round holes to be sleeved on the rotating shaft 11, fastened with the rotating shaft 11, driven by the rotating shaft 11 to rotate and synchronously rotate with the first magnet assembly 20; the three second magnet assemblies 30 are magnetized in the directions shown in fig. 4, and the magnetic lines converge toward the center to form a magnetic flow path in which the magnetic fluxes converge.

In specific implementation, the three second magnet assemblies 30 are separated by the 3 second magnetic resistance plates 110, so that abnormal magnetic force line transmission between the three second magnet assemblies 30 is prevented. The bottom of each second magnet assembly 30 is provided with a magnetic separating block 120, so that the converged magnetic flow path can be uniformly divided into 3 magnetic branch paths.

In specific implementation, the magnetic field of the magnetic refrigeration system has 3 parts, including an independent magnetic loop section, a magnetic convergence section and a magnetic shunt section. As shown in fig. 6, the three independent magnetic circuit sections are uniformly distributed in the circumferential direction with the rotating shaft as a central axis.

In particular, the magnetic refrigeration system has 3 independent magnetic circuit sections, and a single complete independent magnetic circuit section is shown in fig. 5. Referring to fig. 2, 3 and 4, the magnetic lines of force of the individual magnetic circuit segments flow out toward the first magnet 22 in the radial direction of the tray from the fourth magnet 25 of the first magnet assembly 20, passing through the first magnet 22. The magnetic force lines are changed to be vertically upward, pass through the first magnetic convergence plate 60 and the second magnetic convergence plate 70, pass through the first air gap 21, and pass through the second magnet 23. The magnetic field lines then reach the third magnet 24 where they switch to flow in the radial direction of the tray away from the first magnet 22, continue to flow forward through the third flux concentrator plate 90, through the second air gap 31, then reach the fourth flux concentrator plate 100 on the second magnet assembly 30, and continue to flow forward through the second magnet assembly 30. The independent magnetic circuit section is partially finished.

In specific implementation, referring to fig. 6, 7 and 8, the three second magnet assemblies 30 are also circumferentially and uniformly distributed around the rotating shaft and are in contact with the rotating shaft. In the magnetic circuit circulation, the rotating shaft also plays a role of magnetic conduction as a part of the magnetic circuit. After the magnetic lines of force of the 3 independent magnetic circuit sections pass through the second magnet assembly 30, the magnetic lines of force are converged at the central position due to the contact with the rotating shaft and are transmitted downwards along the rotating shaft; in this way, a magnetic convergence section is formed. Only ribs for supporting the first magnet 22 are left on the working surface of the tray, and the rest parts are hollowed out. The ribs can play a role of magnetic conduction. When the magnetic force lines are transmitted to the magnetic dividing block at the bottom of the second magnet assembly 30 along the rotating shaft, under the action of the magnetic dividing block, the magnetic force lines are divided into 3 paths again, the 3 paths of magnetic force lines are transmitted along the ribs on the tray and finally pass through the first magnet 22 of the first magnet assembly 20, so that a magnetic dividing section is formed. In conclusion, the magnetic circulation flow path of the entire period is completed.

In specific implementation, the first magnet assembly 20 is a U-shaped structure, and the recessed opening of the U-shaped structure is disposed toward a direction away from the second magnet assembly 30.

During specific implementation, the arrangement of the cold storage bed can be vertically close to the center or transversely close to the center.

The magnetic refrigeration system of the present invention solves the following problems in the prior art: the permanent magnet assembly occupies a large space volume in a magnetic refrigeration system, but most of the existing magnets have the problems of small and small magnet air gaps and low magnet utilization rate; because the prior magnet assembly has the problem of low utilization rate, the magnetic refrigerator generally has the problems of large overall volume, high cost and being not beneficial to industrialization and commercialization; because the magnet assembly is bulky and massive, the manner of rotating the magnet assembly can have the problems of high power consumption and low efficiency.

The magnetic refrigeration system has the beneficial effects that: the utilization rate of the magnet is improved, so that the mass of the magnet assembly is smaller, the structure is more compact, the overall cost of the magnetic refrigerator can be effectively reduced, and the magnetic refrigerator has great beneficial effects on industrialization and commercialization of the magnetic refrigerator.

The invention has the following advantages: the magnetic refrigeration system can perform excitation and demagnetization on the cold accumulation beds in the radial and axial regions, so that the comprehensive utilization rate of the magnet assembly is improved; the magnet assembly with multiple air gaps and compact structure enables the volume of the magnet assembly to be effectively reduced, enables the size of the whole machine to be more compact, and is more beneficial to commercialization of a magnetic refrigerator.

The invention also provides a magnetic refrigerator which comprises a magnetic refrigeration system, wherein the magnetic refrigeration system is the magnetic refrigeration system in the embodiment.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the invention relates to the field of magnetic refrigeration, in particular to a magnetic field generating device of a rotary magnetic refrigerator, which comprises a tray 10, a first magnet assembly 20, a second magnet assembly 30, a first cold accumulation bed 40 and a second cold accumulation bed 50, wherein the magnetic refrigeration system is provided with two air gaps, and the two cold accumulation beds are respectively placed in the two air gaps, so that the magnetic entropy change efficiency is doubled under the condition of the same magnet consumption, the magnet utilization rate is further improved, the mass of the magnet assembly is smaller, the structure is more compact, the overall cost of the magnetic refrigerator can be effectively reduced, and the magnetic refrigerator has great beneficial effects on industrialization and commercialization of the magnetic refrigerator.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. A magnetic refrigeration system, comprising:

a tray (10), the tray (10) being rotatably arranged;

the first magnet assembly (20) is arranged on the tray (10) so that the tray (10) drives the first magnet assembly (20) to rotate; the first magnet assembly (20) having a first air gap (21);

the second magnet assembly (30) is arranged on the tray (10) so that the tray (10) drives the second magnet assembly (30) to rotate; the second magnet assembly (30) is spaced from the first magnet assembly (20) to form a second air gap (31);

the first cold accumulation bed (40) is arranged in the first air gap (21) and is used for exciting and demagnetizing the magnetic working medium in the first cold accumulation bed (40) when the first magnet assembly (20) rotates relative to the first cold accumulation bed (40);

and the second cold accumulation bed (50) is arranged in the second air gap (31), so that the first magnet assembly (20) and the second magnet assembly (30) are opposite to each other, and the magnetic working medium in the second cold accumulation bed (50) is excited and demagnetized when the second cold accumulation bed (50) rotates.

2. A magnetic refrigeration system according to claim 1, characterized in that the first air gap (21) extends in a horizontal direction and the second air gap (31) extends in a vertical direction.

3. A magnetic refrigeration system according to claim 1, wherein the first magnet assembly (20) comprises a first magnet (22) and a second magnet (23), the first magnet (22) and the second magnet (23) being spaced apart to form the first air gap (21), the second magnet (23) being disposed above the first magnet (22).

4. The magnetic refrigeration system of claim 3 further comprising:

a first magnetic gathering plate (60), wherein the first magnetic gathering plate (60) is arranged on the end face, close to the second magnet (23), of the first magnet (22); and/or the presence of a gas in the gas,

a second poly-magnetic plate (70), the second poly-magnetic plate (70) being disposed on an end face of the second magnet (23) that is adjacent to the first magnet (22).

5. A magnetic refrigeration system according to claim 3, characterized in that the first magnet assembly (20) further comprises a third magnet (24), the third magnet (24) having oppositely arranged first and second end faces in the radial direction of the tray (10), the first end face being connected with the second magnet (23), the second end face being arranged opposite the second magnet assembly (30) to form the second air gap (31).

6. A magnetic refrigeration system according to claim 5, characterized in that the third magnet (24) has a third end face and a fourth end face arranged oppositely in the vertical direction; the first magnet assembly (20) further comprising a fourth magnet (25), the fourth magnet (25) being sandwiched between the first magnet (22) and the third magnet (24); wherein the fourth magnet (25) has a first connection face and a second connection face, the first connection face being connected with the first magnet (22), the second connection face being connected with the third end face.

7. A magnetic refrigeration system according to claim 6, characterized in that the first magnet (22) has a fifth end face and a sixth end face which are oppositely arranged in the vertical direction, the fifth end face being arranged on the side of the sixth end face remote from the second magnet (23); the third magnet (24) is also provided with a third connecting surface, and one end of the third connecting surface, which is connected with the first connecting surface, is connected with the fifth end surface; one end of the third connecting surface, which is connected with the second connecting surface, is connected with the second end surface;

wherein, a first magnetic resistance plate (80) is arranged on the third connecting surface.

8. The magnetic refrigeration system of claim 5 further comprising:

a third gyromagnetic plate (90), the third gyromagnetic plate (90) being disposed on the second end face; and/or the presence of a gas in the gas,

a fourth magnetic convergence plate (100), the fourth magnetic convergence plate (100) being disposed on an end surface of the second magnet assembly (30) disposed opposite to the second end surface.

9. A magnetic refrigeration system according to any of claims 3 to 8, characterized in that the tray (10) comprises a shaft (11), the second magnet assembly (30) being connected to the shaft (11).

10. A magnetic refrigeration system according to claim 9, characterized in that the tray (10) further comprises a rib (12), the first magnet (22) being connected to the rib (12).

11. The magnetic refrigeration system according to claim 10, characterized in that said first magnet assembly (20) is plural; the number of the second magnet assemblies (30) is multiple, each second magnet assembly (30) is connected with the rotating shaft (11), and the second magnet assemblies (30) are arranged around the circumference of the rotating shaft (11); a plurality of the first magnet assemblies (20) and a plurality of the second magnet assemblies (30) are arranged in a one-to-one correspondence, and the second air gap (31) is formed between each first magnet assembly (20) and the corresponding second magnet assembly (30);

the number of the first cold accumulation beds (40) is multiple, the first cold accumulation beds (40) are arranged in one-to-one correspondence with the first magnet assemblies (20), and each first cold accumulation bed (40) is arranged in the first air gap (21) of the corresponding first magnet assembly (20);

the number of the second cold accumulation beds (50) is multiple, the second cold accumulation beds (50) are arranged in one-to-one correspondence with the second air gaps (31), and each second cold accumulation bed (50) is arranged in the corresponding second air gap (31).

12. The magnetic refrigeration system according to claim 11, wherein a second magnetic resistance plate (110) is disposed between each two adjacent second magnet assemblies (30).

13. The magnetic refrigeration system according to claim 11, wherein the rib (12) is plural, plural ribs (12) are provided in one-to-one correspondence with plural first magnet assemblies (20), each first magnet assembly (20) is provided on the corresponding rib (12); the magnetic refrigeration system further includes:

the magnetic dividing blocks (120) are connected with the rotating shaft (11), the magnetic dividing blocks (120) and the ribs (12) are arranged in a one-to-one correspondence mode, and the magnetic dividing blocks (120) are connected with the corresponding ribs (12).

14. The magnetic refrigeration system of claim 1 further comprising:

the first cold accumulation bed (40) and the second cold accumulation bed (50) are both fixedly arranged on the cold accumulation bed support (130).

15. A magnetic refrigerator comprising a magnetic refrigeration system, characterized in that the magnetic refrigeration system is a magnetic refrigeration system according to any one of claims 1 to 14.

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