Magnetic refrigeration apparatus

Abstract

The application provides a magnetic refrigeration device, comprising: a magnet; a magnetic working substance, at least part of the magnetic working substance is made of a magnetic material, the magnetic working substance is movably arranged relative to the magnet to have a magnetized position and a demagnetized position; when the magnetic working substance is in the magnetized position, the magnetic working substance is magnetized under the action of the magnet; when the magnetic working substance is in the demagnetized position, the magnetic working substance is arranged to be spaced from the magnet to realize demagnetization; and a fluid driving structure for driving a fluid to flow through the magnetic working substance to exchange heat with the magnetic working substance. The magnetic refrigeration device solves the problem of low energy efficiency of the refrigeration device in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of refrigeration equipment, in particular to a magnetic refrigeration equipment. BACKGROUND

[0002] With the progress of society, refrigeration equipment such as refrigerator and air conditioner has been widely used in various fields of people's daily production and life.

[0003] The refrigeration equipment in the prior art usually needs to use refrigerant or heat exchange medium to flow between the evaporator and the condenser to realize the transfer of heat, so as to achieve the effect of refrigeration or heating. Due to the existence of intermediate medium such as refrigerant or heat exchange medium, the refrigeration equipment with such structure needs to transfer heat for many times in the process of refrigeration or heating, and due to the existence of heat transfer efficiency, the energy efficiency of the refrigeration equipment is difficult to be further improved. SUMMARY

[0004] The main purpose of the present application is to provide a magnetic refrigeration equipment to solve the problem of low energy efficiency of the refrigeration equipment in the prior art.

[0005] In order to achieve the above purpose, the present application provides a magnetic refrigeration equipment, comprising: a magnet; a magnetic working substance, at least part of the magnetic working substance is made of magnetic material, the magnetic working substance is movably arranged relative to the magnet to have a magnetized position and a demagnetized position; when the magnetic working substance is at the magnetized position, the magnetic working substance is magnetized under the action of the magnet; when the magnetic working substance is at the demagnetized position, the magnetic working substance is arranged at intervals with the magnet to realize demagnetization; a fluid driving structure for driving fluid to flow through the magnetic working substance to exchange heat with the magnetic working substance.

[0006] Further, the magnetic refrigeration equipment comprises a first flow channel and a second flow channel; the fluid driving structure comprises: a fluid first driving device arranged at a position corresponding to the first flow channel to drive the fluid to flow along the first flow channel; when the magnetic working substance moves to the magnetized position, the magnetic working substance is located in the first flow channel or at one end of the first flow channel; a fluid second driving device arranged at a position corresponding to the second flow channel to drive the fluid to flow along the second flow channel; when the magnetic working substance moves to the demagnetized position, the magnetic working substance is located in the second flow channel or at one end of the second flow channel.

[0007] Further, the magnetic refrigeration equipment comprises a shell, the shell has a refrigeration cavity therein, the shell is provided with a first opening, a second opening and a third opening; the first flow channel communicates the first opening and the second opening, and the second flow channel communicates the third opening and the refrigeration cavity.

[0008] Further, the magnetized position and the demagnetized position are arranged at intervals along the direction around a predetermined axis, and the magnetic working substance is rotatably arranged around the predetermined axis to switch between the magnetized position and the demagnetized position.

[0009] Furthermore, the magnetic working fluid includes multiple working fluid sheets made of magnetic material, which are spaced apart along a direction surrounding a predetermined axis; a fluid channel is formed between two adjacent working fluid sheets.

[0010] Furthermore, the housing has a first chamber, a second chamber, and a third chamber, with a second opening connecting to the third chamber; the magnetic refrigeration device also includes a first connecting member and a second connecting member, the first connecting member being disposed in the third chamber and dividing the third chamber into a first segment and a second segment, with the second opening connecting to the first segment; the second connecting member being disposed in the first chamber and dividing the first chamber into a third segment and a fourth segment, with the first opening connecting to the third segment; both the magnet and the magnetic working fluid are disposed in the second chamber, the first fluid driving device is disposed in the first segment, and the second fluid driving device is disposed in the fourth segment; wherein, when the magnetic working fluid is in a magnetized position, the third segment, the fluid channel, and the first segment form a first flow channel; when the magnetic working fluid is in a demagnetized position, the fluid channel and the fourth segment form a second flow channel.

[0011] Furthermore, the shell is provided with a partition, and the first chamber and the second chamber are respectively disposed on both sides of the partition; the partition and the first connecting member are spaced apart along the direction of the predetermined axis; the magnetic refrigeration device also includes a first sealing gasket, a second sealing gasket and a sliding sealing disc, the sliding sealing disc is disposed between the magnetic working material and the partition and is fixed relative to the magnetic working material; the first sealing gasket is disposed on the end face of the first connecting member near the magnetic working material, and the second sealing gasket is disposed on the side of the partition near the sliding sealing disc.

[0012] Furthermore, the magnetic refrigeration device also includes a sealing ring, which is disposed between the second chamber and the third chamber. The sealing ring is arranged around a predetermined axis, and the inner wall surface of the sealing ring contacts the side of the magnetic working material away from the predetermined axis. The outer wall surface of the sealing ring contacts the inner wall surface of the housing.

[0013] Furthermore, a felt layer is provided on the side of the first sealing gasket near the magnetic material, the side of the second sealing gasket near the sliding sealing disc, and the inner wall surface of the sealing ring.

[0014] Furthermore, there are multiple magnets, which are arranged at intervals along a direction surrounding a predetermined axis; there are multiple magnetic working materials, which are arranged at intervals along a direction surrounding a predetermined axis, and the multiple magnetic working materials are arranged in a one-to-one correspondence with the multiple magnets.

[0015] Furthermore, the magnetic refrigeration device includes a magnetic yoke, which is arranged around a predetermined axis.

[0016] Furthermore, the magnetic refrigeration device includes a rotary drive device that is connected to the magnetic working medium to drive the magnetic working medium to switch between a magnetized position and a demagnetized position.

[0017] The magnetic refrigeration device of the technical solution of the present application comprises a magnet, a magnetic working substance and a fluid driving structure. At least part of the magnetic working substance is made of a magnetic material. The magnetic working substance is movably arranged relative to the magnet to have a magnetized position and a demagnetized position. When the magnetic working substance is in the magnetized position, the magnetic working substance is magnetized under the action of the magnet. When the magnetic working substance is in the demagnetized position, the magnetic working substance is arranged to be spaced apart from the magnet to realize demagnetization. The fluid driving structure is used to drive the fluid to flow through the magnetic working substance to exchange heat with the magnetic working substance. When the magnetic working substance is in the magnetized position, it is magnetized by the magnet, so that the magnetic moment order increases and the temperature rises, and heat can be released to the outside. When the magnetic working substance is in the demagnetized position, the internal magnetic moment order of the magnetic working substance decreases and the temperature drops, and heat can be absorbed from the outside. When the temperature of the magnetic working substance rises or drops, the fluid is driven to flow through the magnetic working substance by the fluid driving structure, so that the heat exchange between the fluid and the magnetic working substance is realized, thereby realizing the refrigeration or heating of the fluid. By adopting this structure design, the magnetic working substance is used to exchange heat with the fluid, without the need to use refrigerant or heat exchange medium as intermediate medium, so that the number of heat exchanges in the working process of the magnetic refrigeration device can be effectively reduced, and the energy efficiency of the magnetic refrigeration device can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof, to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0019] Figure 1 A structure schematic diagram of a first perspective view of an embodiment of the magnetic refrigeration device according to the present application is shown;

[0020] Figure 2 A cross-sectional structure schematic diagram of an embodiment of the magnetic refrigeration device according to the present application is shown;

[0021] Figure 3 An enlarged structure schematic diagram of a local area of an embodiment of the magnetic refrigeration device according to the present application is shown; Figure 2

[0022] Figure 4 A cross-sectional structure schematic diagram of an embodiment of the magnetic refrigeration device according to the present application along the line A-A is shown; Figure 2

[0023] A cross-sectional structure schematic diagram of an embodiment of the magnetic refrigeration device according to the present application along the line B-B is shown; Figure 5 Figure 2 A cross-sectional structure schematic diagram of an embodiment of the magnetic refrigeration device according to the present application along the line C-C is shown;

[0024] Figure 6 Figure 2 A cross-sectional structure schematic diagram of an embodiment of the magnetic refrigeration device according to the present application along the line C-C is shown;

[0025] ​​​Figure 7 shows a cross-sectional structural schematic view of the magnetic refrigeration device according to the embodiment of the application along the line D-D in Figure 2

[0026] Figure 8 shows an enlarged structural schematic view of a partial area of the magnetic refrigeration device according to the embodiment of the application in Figure 7

[0027] Figure 9 shows a perspective schematic view of the magnetic working substance of the magnetic refrigeration device according to the embodiment of the application;

[0028] Figure 10 shows a top view schematic view of the magnetic working substance of the magnetic refrigeration device according to the embodiment of the application;

[0029] Figure 11 shows a structural schematic view of the first communication member of the magnetic refrigeration device according to the embodiment of the application.

[0030] In the above drawings, the following reference signs are used:

[0031] 1, housing; 11, partition; 12, operation door; 13, partition piece; 10, refrigeration cavity; 101, freezing chamber; 102, refrigerating chamber; 20, first chamber; 201, third cavity section; 202, fourth cavity section; 30, second chamber; 40, third chamber; 401, first cavity section; 402, second cavity section; 100, first opening; 200, second opening; 300, third opening; 2, magnet; 3, magnetic working substance; 31, working substance sheet; 32, fluid passage; 33, connecting part; 34, reinforcing part; 4, fluid driving structure; 41, fluid first driving device; 42, fluid second driving device; 51, first communication member; 511, support plate; 512, bottom plate; 52, second communication member; 61, first sealing gasket; 62, second sealing gasket; 63, sealing ring; 7, sliding sealing disc; 8, magnetic yoke; 9, rotary driving device; 91, motor; 92, first bevel gear; 93, second bevel gear; 94, driving shaft. DETAILED DESCRIPTION

[0032] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0033] Reference should be made to Figures 1 to 11 ​​The application provides a magnetic refrigeration device, which comprises a magnet 2, a magnetic working substance 3, a fluid driving structure 4, wherein the magnetic working substance 3 is made of magnetic material, and is movably arranged relative to the magnet 2 to have a magnetized position and a demagnetized position; when the magnetic working substance 3 is at the magnetized position, the magnetic working substance 3 is magnetized under the action of the magnet 2; when the magnetic working substance 3 is at the demagnetized position, the magnetic working substance 3 is arranged to be spaced from the magnet 2 to realize demagnetization; and the fluid driving structure 4 is used to drive fluid to flow through the magnetic working substance 3 to exchange heat with the magnetic working substance 3.

[0034] The magnetic refrigeration device of the application comprises a magnet 2, a magnetic working substance 3 and a fluid driving structure 4, wherein the magnetic working substance 3 is made of magnetic material, and is movably arranged relative to the magnet 2 to have a magnetized position and a demagnetized position; when the magnetic working substance 3 is at the magnetized position, the magnetic working substance 3 is magnetized under the action of the magnet 2; when the magnetic working substance 3 is at the demagnetized position, the magnetic working substance 3 is arranged to be spaced from the magnet 2 to realize demagnetization; and the fluid driving structure 4 is used to drive fluid to flow through the magnetic working substance 3 to exchange heat with the magnetic working substance 3. When the magnetic working substance 3 is at the magnetized position, it is magnetized by the magnet 2, so that the magnetic moment order degree is increased, the temperature is increased, and heat can be released to the outside; when the magnetic working substance 3 is at the demagnetized position, the internal magnetic moment order degree is decreased, the temperature is decreased, and heat can be absorbed from the outside. When the temperature of the magnetic working substance 3 is increased or decreased, the fluid is driven to flow through the magnetic working substance 3 by the fluid driving structure 4, so that the heat exchange between the fluid and the magnetic working substance 3 is realized, and the refrigeration or heating of the fluid is realized. By adopting the structure design, the magnetic working substance 3 is used to exchange heat with the fluid, and no intermediate medium such as refrigerant or heat exchange medium is needed, so that the number of heat exchanges in the working process of the magnetic refrigeration device can be effectively reduced, and the energy efficiency of the magnetic refrigeration device can be improved.

[0035] The magnetic material refers to a material that can be magnetized by the magnet 2, and the magnetization and demagnetization are not limited to complete magnetization or complete demagnetization. It can be understood that the magnetic moment order degree of the magnetic working substance 3 in the magnetized state is higher than that in the demagnetized state.

[0036] According to specific use occasions, the fluid can be air, water or other fluids that need to be temperature-regulated. The type and installation position of the fluid driving structure 4 are not limited, as long as the fluid driving structure 4 can drive the fluid to flow through the magnetic working substance 3. Specifically, when the fluid is a gas, the fluid driving structure 4 can be a fan, and when the fluid is a liquid, the fluid driving structure 4 can be selected from various pumps.

[0037] Since the technical scheme of the magnetic refrigeration device of the embodiment of the application does not need to use refrigerant, the damage to the environment can be avoided.

[0038] Specifically, the magnetic refrigeration device comprises a first flow channel and a second flow channel; the fluid driving structure 4 comprises: a fluid first driving device 41 arranged at a position corresponding to the first flow channel to drive the fluid to flow along the first flow channel; when the magnetic working substance 3 moves to the magnetized position, the magnetic working substance 3 is located in the first flow channel or at one end of the first flow channel; and a fluid second driving device 42 arranged at a position corresponding to the second flow channel to drive the fluid to flow along the second flow channel; when the magnetic working substance 3 moves to the demagnetized position, the magnetic working substance 3 is located in the second flow channel or at one end of the second flow channel.

[0039] By adopting the above structure, when the magnetic working substance 3 moves to the magnetized position, the fluid first driving device 41 drives the fluid to flow along the first flow channel, and the part of the fluid flowing through the magnetic working substance 3 exchanges heat with the magnetic working substance 3, thereby absorbing the heat of the magnetic working substance 3 and increasing the temperature of the fluid in the first flow channel. When the magnetic working substance 3 moves to the demagnetized position, the fluid second driving device 42 drives the fluid to flow along the second flow channel, and the part of the fluid flowing through the magnetic working substance 3 exchanges heat with the magnetic working substance 3, thereby transferring heat to the magnetic working substance 3 and decreasing the temperature of the fluid in the second flow channel. According to specific requirements, the fluid in the first flow channel and / or the second flow channel can be utilized, thereby realizing heating and / or refrigeration operation.

[0040] In another embodiment, the fluid driving structure 4 only comprises one fluid driving device which is mounted on the magnetic working substance 3 and synchronously moves with the magnetic working substance 3. When the magnetic working substance 3 moves to the magnetized position, the fluid driving device drives the fluid to flow along the first flow channel and flow through the magnetic working substance 3. When the magnetic working substance 3 moves to the demagnetized position, the fluid driving device drives the fluid to flow along the second flow channel and flow through the magnetic working substance 3. In this way, the number of fluid driving devices can be reduced, and the structure of the magnetic refrigeration device can be simplified. In this embodiment, the fluid driving device is a fan. In order to avoid the mutual influence of the fluids in the first flow channel and the second flow channel as much as possible and improve the stability of the operation of the magnetic refrigeration device, the rotation direction of the fluid driving device is opposite when the magnetic working substance 3 is at the magnetized position or the demagnetized position.

[0041] In specific implementation, the fluid first driving device 41 and the fluid second driving device 42 can select multiple structures according to the type of the fluid. When the fluid is a gas, the fluid first driving device 41 and the fluid second driving device 42 are fans. When the fluid is a liquid, the fluid first driving device 41 and the fluid second driving device 42 are fluid pumps.

[0042] In this embodiment, when the magnetic working substance 3 is at the magnetized position, the magnetic working substance 3 is located in the first flow channel. When the magnetic working substance 3 is at the demagnetized position, the magnetic working substance 3 is located in the second flow channel.

[0043] Specifically, the magnetic refrigeration device comprises a shell 1, a refrigeration cavity 10 is arranged in the shell 1, the shell 1 is provided with a first opening 100, a second opening 200 and a third opening 300; a first flow channel is arranged between the first opening 100 and the second opening 200, and a second flow channel is arranged between the third opening 300 and the refrigeration cavity 10.

[0044] In the embodiment, the magnetic refrigeration device is a magnetic refrigeration refrigerator. When the magnetic working medium 3 is in the magnetized position, the fluid flows into the first flow channel from the first opening 100, absorbs the heat of the magnetic working medium 3, and then flows out from the second opening 200. When the magnetic working medium 3 is in the demagnetized position, the fluid flows into the second flow channel from the third opening 300, transfers the heat to the magnetic working medium 3, and then enters the refrigeration cavity 10, so as to realize the refrigeration of the inside of the refrigeration cavity 10.

[0045] In the embodiment, the shell 1 is provided with an operation opening, and an operation door 12 which can be opened and closed is arranged at the operation opening. When the operation door 12 is opened, the refrigeration cavity 10 is communicated with the outside space through the operation opening. When the operation door 12 is closed, the operation door 12 isolates the refrigeration cavity 10 from the outside space.

[0046] The refrigeration cavity 10 is provided with a partition 13, and the partition 13 divides the refrigeration cavity 10 into a freezing chamber 101 and a refrigerating chamber 102. The freezing chamber 101 is communicated with the second flow channel. In order to reduce the heat transfer between the refrigeration cavity 10 and the outside, the shell 1 comprises a heat preservation layer. In the embodiment, the heat preservation layer is made of polyurethane foaming material.

[0047] Specifically, the magnetized position and the demagnetized position are arranged along the direction around the predetermined axis, and the magnetic working medium 3 is rotatably arranged around the predetermined axis to switch between the magnetized position and the demagnetized position.

[0048] By arranging the magnetic working medium 3 to be rotatable around the predetermined axis to switch between the magnetized position and the demagnetized position, the continuity of the operation of the magnetic refrigeration device is improved, and the refrigeration or heating effect is improved.

[0049] Of course, in addition to adopting the rotating structure to switch the magnetic working medium 3 between the magnetized position and the demagnetized position, other forms of movement can also be adopted to realize it, for example, the magnetized position and the demagnetized position are arranged along a preset direction, and the magnetic working medium 3 is movably arranged along the preset direction to switch between the magnetized position and the demagnetized position. However, the continuity of the operation of the magnetic refrigeration device arranged in this structure is poor.

[0050] Specifically, the magnetic working medium 3 comprises a plurality of working medium pieces 31 made of magnetic material, and the plurality of working medium pieces 31 are arranged along the direction around the predetermined axis; a fluid channel 32 is formed between two adjacent working medium pieces 31.

[0051] The plurality of working substance pieces 31 are connected through the connecting portion 33, and in order to further improve the structural strength of the magnetic working substance 3, the magnetic working substance 3 comprises a reinforcing portion 34, the reinforcing portion 34 is arranged in the direction around the predetermined axis, and the reinforcing portion 34 is connected with the plurality of working substance pieces 31 to reinforce the plurality of working substance pieces 31.

[0052] Specifically, the shell 1 has a first chamber 20, a second chamber 30 and a third chamber 40 inside, and a second opening 200 communicates with the third chamber 40; the magnetic refrigeration device further comprises a first communicating member 51 and a second communicating member 52, the first communicating member 51 is arranged in the third chamber 40, the first communicating member 51 divides the third chamber 40 into a first cavity section 401 and a second cavity section 402, and the second opening 200 communicates with the first cavity section 401; the second communicating member 52 is arranged in the first chamber 20, the second communicating member 52 divides the first chamber 20 into a third cavity section 201 and a fourth cavity section 202, and the first opening 100 communicates with the third cavity section 201; the magnet 2 and the magnetic working substance 3 are arranged in the second chamber 30, a fluid first driving device 41 is arranged in the first cavity section 401, and a fluid second driving device 42 is arranged in the fourth cavity section 202; wherein when the magnetic working substance 3 is in a magnetized position, the third cavity section 201, the fluid channel 32 and the first cavity section 401 form a first flow channel; when the magnetic working substance 3 is in a demagnetized position, the fluid channel 32 and the fourth cavity section 202 form a second flow channel.

[0053] In the embodiment, the first communicating member 51 comprises a support plate 511, the support plate 511 abuts against the inner wall of the third chamber 40, so as to divide the third chamber 40 into the first cavity section 401 and the second cavity section 402. In addition, the first communicating member 51 further comprises a bottom plate 512 connected with the support plate 511, the bottom plate 512 is attached to the inner bottom of the third chamber 40, so as to ensure the separation effect of the first communicating member 51 on the first cavity section 401 and the second cavity section 402. The second communicating member 52 is a tubular structure.

[0054] Specifically, the inside of the shell 1 is provided with a partition plate 11, and the first chamber 20 and the second chamber 30 are correspondingly arranged on the two sides of the partition plate 11; the partition plate 11 is arranged in a direction along the predetermined axis and spaced apart from the first communicating member 51; the magnetic refrigeration device further comprises a first sealing gasket 61, a second sealing gasket 62 and a sliding sealing disc 7, the sliding sealing disc 7 is arranged between the magnetic working substance 3 and the partition plate 11 and is fixed relative to the magnetic working substance 3; the first sealing gasket 61 is arranged on the end face of the first communicating member 51 close to the magnetic working substance 3, and the second sealing gasket 62 is arranged on the side of the partition plate 11 close to the sliding sealing disc 7.

[0055] When the magnetic working substance 3 rotates around the predetermined axis, the sliding sealing disc 7 rotates synchronously with the magnetic working substance 3, the magnetic working substance 3 and the first communicating member 51 are sealed by the first sealing gasket 61, and the sliding sealing disc 7 and the partition plate 11 are sealed by the second sealing gasket 62.

[0056] In the embodiment, in order to ensure that the fluid can flow more smoothly through the second flow channel, the sliding sealing disc 7 is provided with a through hole at a position corresponding to the fluid channel 32 of the magnetic working medium 3, and the shape and size of the through hole are the same as those of the plurality of fluid channels 32 of the magnetic working medium 3.

[0057] Specifically, the magnetic refrigeration device further comprises a sealing ring 63, which is arranged between the second chamber 30 and the third chamber 40, and is arranged around the predetermined axis, the inner wall surface of the sealing ring 63 is in contact with the side of the magnetic working medium 3 away from the predetermined axis, and the outer wall surface of the sealing ring 63 is in contact with the inner wall surface of the shell 1. In this way, the sealing ring 63 can realize the sealing between the second chamber 30 and the third chamber 40, and together with the first sealing gasket 61 and the second sealing gasket 62, it can ensure the stable flow of the fluid in the first flow channel and the second flow channel, avoid the mixing of the fluid, and improve the refrigeration or heating efficiency of the magnetic refrigeration device.

[0058] Specifically, the side of the first sealing gasket 61 close to the magnetic working medium 3, the side of the second sealing gasket 62 close to the sliding sealing disc 7, and the inner wall surface of the sealing ring 63 are all provided with a felt layer. In this way, the resistance of the magnetic working medium 3 during rotation can be reduced on the basis of ensuring the overall sealing effect of the magnetic refrigeration device, the friction loss is reduced, and the friction noise is reduced.

[0059] Specifically, the plurality of magnets 2 are arranged in a direction around the predetermined axis; the plurality of magnetic working mediums 3 are arranged in a direction around the predetermined axis, and the plurality of magnetic working mediums 3 are arranged one by one corresponding to the plurality of magnets 2.

[0060] That is, with the rotation of the plurality of magnetic working mediums 3, the plurality of magnetic working mediums 3 are simultaneously in the magnetized position or simultaneously in the demagnetized position, and the fluid is driven to exchange heat with the plurality of magnetic working mediums 3 by the fluid driving structure 4, so that the residence time of the magnetic working medium 3 in the magnetized position or the demagnetized position can be fully utilized, and the efficiency of the magnetic refrigeration device is improved.

[0061] In the embodiment, the magnetic refrigeration device comprises a first flow channel and a second flow channel, the fluid driving structure 4 comprises a plurality of fluid first driving devices 41 and a plurality of fluid second driving devices 42, and the plurality of fluid first driving devices 41 are arranged one by one corresponding to the plurality of magnetic working mediums 3; when the plurality of magnetic working mediums 3 are in the magnetized position, the plurality of fluid first driving devices 41 drive the fluid to flow through the plurality of magnetic working mediums, and drive the fluid to flow along the first flow channel; when the plurality of magnetic working mediums 3 are in the demagnetized position, the plurality of fluid second driving devices 42 drive the fluid to flow through the plurality of magnetic working mediums 3, and drive the fluid to flow along the second flow channel.

[0062] Specifically, the magnetic refrigeration device comprises a magnetic yoke 8, which is arranged around the predetermined axis.

[0063] By setting the magnetic yoke 8 around the predetermined axis, the magnetic field can be more concentratedly distributed in the region between the magnetic yoke 8 and the magnet 2, thereby improving the magnetization and demagnetization effects of the magnetic working substance 3.

[0064] Specifically, the magnetic refrigeration device comprises a rotary driving device 9 in driving connection with the magnetic working substance 3, so as to drive the magnetic working substance 3 to switch between the magnetization position and the demagnetization position through the rotary driving device 9.

[0065] In the specific implementation, the rotary driving device 9 can have various structural options as long as it can realize the function of driving the magnetic working substance 3 to rotate around the predetermined axis. In the embodiment, the rotary driving device 9 comprises a motor 91, a first bevel gear 92, a second bevel gear 93 and a driving shaft 94. The motor 91 is arranged in the second cavity section 402 and its output shaft extends in the horizontal direction. The first bevel gear 92 is installed on the output shaft of the motor 91. The second bevel gear 93 is in mesh with the first bevel gear 92. The second bevel gear 93 is installed on the driving shaft 94. The driving shaft 94 extends in the direction of the predetermined axis. The driving shaft 94 is connected with the sliding sealing disc 7.

[0066] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0067] The magnetic refrigeration device of the present application comprises a magnet 2, a magnetic working substance 3 and a fluid driving structure 4. At least part of the magnetic working substance 3 is made of a magnetic material. The magnetic working substance 3 is movably arranged relative to the magnet 2 to have a magnetization position and a demagnetization position. When the magnetic working substance 3 is at the magnetization position, it is magnetized under the action of the magnet 2. When the magnetic working substance 3 is at the demagnetization position, it is arranged in a spaced manner with the magnet 2 to realize demagnetization. The fluid driving structure 4 is used to drive the fluid to flow through the magnetic working substance 3 to exchange heat with the magnetic working substance 3. When the magnetic working substance 3 is at the magnetization position, it is magnetized by the magnet 2, so that the magnetic moment order degree increases and the temperature rises, and heat can be released to the outside. When the magnetic working substance 3 is at the demagnetization position, the internal magnetic moment order degree decreases and the temperature drops, and heat can be absorbed from the outside. After the temperature of the magnetic working substance 3 rises or drops, the fluid is driven to flow through the magnetic working substance 3 by the fluid driving structure 4, so that the heat exchange between the fluid and the magnetic working substance 3 is realized, thereby realizing the refrigeration or heating of the fluid. By adopting this structural design, the magnetic working substance 3 is used to exchange heat with the fluid, without the need to use refrigerant or heat exchange medium as intermediate medium, so that the number of heat exchanges in the working process of the magnetic refrigeration device can be effectively reduced, which is conducive to improving the energy efficiency of the magnetic refrigeration device.

[0068] For purposes of the description hereinafter, the orientations in the figures will be described as shown. It is to be understood that the orientations depicted in the figures are exemplary and that the exemplary embodiments described herein can assume various alternative orientations, except where otherwise indicated. The spatially relative terms "front," "rear," "under," "below," "lower," "upper," "over," "top," "side" and derivative thereof (e.g., "vertical," "horizontal" and "transverse") can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) 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. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. 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. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0069] It is to be understood that the terminology used herein is for the purpose of describing the particular embodiments only and is not intended to be limiting. As used herein, the singular form "a", "an" and "the" include plural references unless the context clearly dictates otherwise. As used herein, the term "includes" and / or "including" means, including but not limited to.

[0070] It is to be understood that the terminology used herein is for the purpose of describing the particular embodiments only and is not intended to be limiting. As used herein, the singular form "a", "an" and "the" include plural references unless the context clearly dictates otherwise. As used herein, the term "includes" and / or "including" means, including but not limited to.

[0071] The preferred embodiments of the application described herein are examples of the present application and are not intended to limit the scope of the application. Various modifications of the application can be made without departing from the spirit and scope of the application. Accordingly, it is not intended that the application be limited, except as by the appended claims.

Claims

1. A magnetic refrigeration apparatus, characterized by, Comprise: a magnet (2); a magnetic working substance (3), at least part of the magnetic working substance (3) is made of a magnetic material, the magnetic working substance (3) is movably arranged relative to the magnet (2) to have a magnetized position and a demagnetized position; when the magnetic working substance (3) is in the magnetized position, the magnetic working substance (3) is magnetized under the action of the magnet (2); when the magnetic working substance (3) is in the demagnetized position, the magnetic working substance (3) is arranged to be spaced from the magnet (2) to realize demagnetization; a fluid driving structure (4) for driving fluid to flow through the magnetic working substance (3) to exchange heat with the magnetic working substance (3); The magnetic refrigeration device comprises a first flow channel and a second flow channel; The fluid driving structure (4) comprises: a fluid first driving device (41) arranged at a position corresponding to the first flow channel to drive fluid to flow along the first flow channel; a fluid second driving device (42) arranged at a position corresponding to the second flow channel to drive fluid to flow along the second flow channel; The magnetic refrigeration device comprises a shell (1) having a refrigeration cavity (10) inside, the shell (1) is provided with a first opening (100), a second opening (200) and a third opening (300); the first flow channel communicates the first opening (100) and the second opening (200), and the second flow channel communicates the third opening (300) and the refrigeration cavity (10); The shell (1) has a first chamber (20), a second chamber (30) and a third chamber (40) inside, and the second opening (200) communicates the third chamber (40); The magnetic refrigeration device further comprises a first communication member (51) and a second communication member (52), the first communication member (51) is arranged in the third chamber (40), the first communication member (51) divides the third chamber (40) into a first cavity section (401) and a second cavity section (402), and the second opening (200) communicates with the first cavity section (401); the second communication member (52) is arranged in the first chamber (20), the second communication member (52) divides the first chamber (20) into a third cavity section (201) and a fourth cavity section (202), and the first opening (100) communicates with the third cavity section (201); The magnet (2) and the magnetic working substance (3) are arranged in the second chamber (30), the fluid first driving device (41) is arranged in the first cavity section (401), and the fluid second driving device (42) is arranged in the fourth cavity section (202).

2. The magnetic refrigeration apparatus of claim 1, wherein, When the magnetic working substance (3) moves to the magnetized position, the magnetic working substance (3) is located in the first flow channel or at one end of the first flow channel; when the magnetic working substance (3) moves to the demagnetized position, the magnetic working substance (3) is located in the second flow channel or at one end of the second flow channel.

3. The magnetic refrigeration apparatus of claim 1, wherein, The magnetization position and the demagnetization position are arranged along a direction around a predetermined axis, and the magnetic working medium (3) is rotatably arranged around the predetermined axis to switch between the magnetization position and the demagnetization position.

4. The magnetic refrigeration apparatus of claim 3, wherein, The magnetic working medium (3) comprises a plurality of working medium pieces (31) made of magnetic material, and the plurality of working medium pieces (31) are arranged along a direction around the predetermined axis; a fluid channel (32) is formed between two adjacent working medium pieces (31).

5. The magnetic refrigeration device according to claim 4, wherein, wherein, When the magnetic working medium (3) is in the magnetization position, the third cavity section (201), the fluid channel (32) and the first cavity section (401) constitute the first flow channel; and when the magnetic working medium (3) is in the demagnetization position, the fluid channel (32) and the fourth cavity section (202) constitute the second flow channel.

6. The magnetic refrigeration apparatus of claim 5, wherein, The inside of the shell (1) is provided with a partition plate (11), and the first cavity (20) and the second cavity (30) are respectively arranged on two sides of the partition plate (11); the partition plate (11) and the first communication member (51) are arranged along a direction of the predetermined axis. The magnetic refrigeration device further comprises a first sealing gasket (61), a second sealing gasket (62) and a sliding sealing disc (7), the sliding sealing disc (7) is arranged between the magnetic working medium (3) and the partition plate (11) and is fixed relative to the magnetic working medium (3); the first sealing gasket (61) is arranged on an end face of the first communication member (51) close to the magnetic working medium (3), and the second sealing gasket (62) is arranged on a side of the partition plate (11) close to the sliding sealing disc (7).

7. The magnetic refrigeration apparatus of claim 6, wherein, The magnetic refrigeration device further comprises a sealing ring (63), the sealing ring (63) is arranged between the second cavity (30) and the third cavity (40), the sealing ring (63) is arranged around the predetermined axis, an inner wall surface of the sealing ring (63) is in contact with a side of the magnetic working medium (3) away from the predetermined axis, and an outer wall surface of the sealing ring (63) is in contact with an inner wall surface of the shell (1).

8. The magnetic refrigeration apparatus of claim 7, wherein, A side of the first sealing gasket (61) close to the magnetic working medium (3), a side of the second sealing gasket (62) close to the sliding sealing disc (7) and an inner wall surface of the sealing ring (63) are all provided with a felt layer.

9. The magnetic refrigeration apparatus according to any one of claims 3 to 8, characterized in that, The plurality of magnets (2) are arranged along a direction around the predetermined axis; the plurality of magnetic working mediums (3) are arranged along a direction around the predetermined axis, and the plurality of magnetic working mediums (3) are arranged in one-to-one correspondence with the plurality of magnets (2).

10. The magnetic refrigeration apparatus of claim 9, wherein, The magnetic refrigeration device comprises a magnetic yoke (8), and the magnetic yoke (8) is arranged around the predetermined axis.

11. The magnetic refrigeration apparatus according to any one of claims 3 to 8, characterized in that, The magnetic refrigeration device comprises a rotary driving device (9), and the rotary driving device (9) is in driving connection with the magnetic working medium (3) to drive the magnetic working medium (3) to switch between the magnetization position and the demagnetization position through the rotary driving device (9).

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