A miniaturized magnetic refrigeration module

Abstract

This utility model discloses a miniaturized magnetic refrigeration module, comprising: a housing with an inlet for coolant inflow and an outlet for coolant outflow, a heat exchange chamber inside the housing, and the inlet and outlet both connected to the heat exchange chamber; a magnetic refrigeration component disposed in the heat exchange chamber, comprising a magnetocaloric material and a magnetic field generating mechanism, the magnetic field generating mechanism being used to magnetize the demagnetized magnetocaloric material, the inlet and outlet both being connected to the magnetocaloric material via the heat exchange chamber; and a heat dissipation component, at least partially disposed within the housing, adjacent to and connected to the heat exchange chamber, the magnetocaloric material being connected to the heat dissipation component via the heat exchange chamber, and the heat dissipation component being used to dissipate heat from the magnetocaloric material. This module achieves modularization of magnetic refrigeration, not only having a small size and occupying less space during installation, meeting the requirements of miniaturization, but also being well-suited for application in small refrigeration equipment, and eliminating the need for separate installation of individual magnetic refrigeration components, thus simplifying assembly.

Description

Technical Field

[0001] This utility model relates to the field of magnetic refrigeration technology, specifically to a miniaturized magnetic refrigeration module. Background Technology

[0002] Refrigeration equipment is a common household appliance. It typically contains a refrigeration system, which generally consists of a compressor, condenser, and evaporator, enabling cooling at relatively low temperatures. However, with the development of magnetic refrigeration technology, refrigeration equipment using magnetic refrigeration systems is also widely used.

[0003] Magnetic refrigeration is a technology that utilizes the magnetocaloric effect of magnetocaloric materials to achieve cooling. When a magnetocaloric material is magnetized, its magnetic entropy decreases, and it releases heat to the outside; when demagnetized, its magnetic entropy increases, and it absorbs heat from the external environment. Magnetic refrigeration technology is commonly used in refrigeration equipment such as refrigerators and air conditioners to achieve cooling. Because air conditioners and refrigerators require relatively large cooling power, the magnetic refrigeration systems used in them are relatively large. Furthermore, the various components of a magnetic refrigeration system are typically assembled separately, resulting in a large space requirement, complex assembly, and difficulty in applying it to smaller refrigeration devices. Utility Model Content

[0004] The purpose of this invention is to disclose a miniaturized magnetic refrigeration module, which is small in size and easy to assemble, and can be used in small refrigeration equipment.

[0005] To achieve the above objectives, this utility model discloses a miniaturized magnetic refrigeration module, comprising:

[0006] The shell has an inlet for coolant to flow in and an outlet for coolant to flow out. The shell is equipped with a heat exchange chamber, and both the inlet and outlet are connected to the heat exchange chamber.

[0007] The magnetic refrigeration component is located in the heat exchange cavity. The magnetic refrigeration component includes a magnetic thermal material and a magnetic field generating mechanism. The magnetic field generating mechanism is used to magnetize the demagnetized magnetic thermal material. The inlet and outlet are both connected to the magnetic thermal material through the heat exchange cavity.

[0008] A heat dissipation component is at least partially disposed within the housing. The heat dissipation component is adjacent to and connected to the heat exchange chamber. The magnetocaloric material is connected to the heat dissipation component via the heat exchange chamber. The heat dissipation component is used to dissipate heat from the magnetocaloric material.

[0009] As an optional implementation, the magnetocaloric material is filled inside the magnetic carrier, and the heat dissipation components, inlet, and outlet are all connected to the magnetic carrier via a heat exchange cavity to connect the magnetocaloric material.

[0010] The magnetic field generating mechanism includes a permanent magnet and a transposition mechanism. The transposition mechanism is connected to the permanent magnet and drives the permanent magnet to move closer to or away from the magnetic carrier.

[0011] As an optional implementation, the switching mechanism includes a motor and a rotating shaft. The permanent magnet is located in the heat exchange chamber, the motor is located outside the housing, the rotating shaft passes through the housing, the output shaft of the motor is fixedly connected to the permanent magnet via the rotating shaft, and a bearing is provided between the rotating shaft and the cavity wall of the housing.

[0012] As an optional implementation, the heat dissipation assembly includes a cooling chamber and a semiconductor heat sink. The cooling chamber is located inside the housing and is adjacent to and connected to the heat exchange chamber. The magnetocaloric material is connected to the cooling chamber through the heat exchange chamber. The semiconductor heat sink is located on the side of the cooling chamber away from the heat exchange chamber, and the cold end of the semiconductor heat sink is attached to the cooling chamber.

[0013] As an optional implementation, the heat dissipation assembly also includes an auxiliary heat dissipation cavity, which is attached to the hot end of the semiconductor heat sink. The auxiliary heat dissipation cavity is provided with heat dissipation fins, and both the air inlet and air outlet of the auxiliary heat dissipation cavity are provided with fans.

[0014] As an optional implementation, a pre-cooling chamber is provided on the flow path of the coolant from the cooling chamber to the magnetothermal material. The pre-cooling chamber and the cooling chamber are arranged in a nested manner and connected by a pipe. An insulation chamber for filling with insulation material is provided between the pre-cooling chamber and the cooling chamber.

[0015] As an optional implementation, a preheating chamber is provided inside the housing. The preheating chamber is adjacent to and connected to the heat exchange cavity, and the preheating chamber is located on the side of the heat exchange cavity away from the heat dissipation assembly. The inlet is connected to the heat exchange cavity through the preheating chamber.

[0016] As an optional implementation, a cold storage chamber is provided inside the shell, and the cold storage chamber and the preheating chamber are arranged in a nested arrangement. An insulation chamber for filling insulation material is provided between the cold storage chamber and the preheating chamber, and the outlet is connected to the heat exchange chamber through the cold storage chamber.

[0017] As an alternative implementation, the magnetic carrier is equipped with a liquid pump at the channel, inlet, and outlet for coolant entry and exit.

[0018] As an alternative implementation, the channels for coolant to enter the magnetic carrier and the channels for coolant to exit the magnetic carrier are staggered along the same coolant flow path.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] The magnetic refrigeration component of this invention is housed inside the housing, and the heat dissipation component is at least partially housed inside the housing, so that the magnetic refrigeration component and the heat dissipation component are integrated and modularized, realizing the magnetic refrigeration. It not only has a small size and occupies less space during installation, meeting the requirements of miniaturization, but can also be well applied to small refrigeration equipment. Moreover, it does not require separate installation of each magnetic refrigeration component, and has the characteristics of simple assembly. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the miniaturized magnetic refrigeration module of this utility model;

[0023] Figure 2 This is a cross-sectional view of the miniaturized magnetic refrigeration module of this utility model;

[0024] Figure 3 This is a schematic diagram showing the miniaturized magnetic refrigeration module of this utility model broken down into three parts;

[0025] Figure 4 This is a schematic diagram from another perspective showing the miniaturized magnetic refrigeration module of this utility model broken down into three parts;

[0026] Figure 5 This is a structural schematic diagram of the preheating chamber and cold storage chamber of this utility model;

[0027] Figure 6 This is a schematic diagram of the heat dissipation component and pre-cooling chamber of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the magnetic refrigeration component of this utility model;

[0029] Figure 8 This is a schematic diagram of the cooling principle of the miniaturized magnetic cooling module of this utility model.

[0030] Explanation of key figure labels:

[0031] 1. Shell; 11. Inlet; 12. Outlet; 13. Heat exchange chamber; 14. Precooling chamber; 15. Insulation chamber; 16. Preheating chamber; 17. Cold storage chamber; 18. Insulation chamber; 19. Pipeline; 2. Magnetic refrigeration assembly; 21. Magnetothermal material; 22. Magnetic field generating mechanism; 221. Permanent magnet; 222. Motor; 223. Rotating shaft; 224. Bearing; 23. Magnetic carrier; 24. Channel; 3. Heat dissipation assembly; 31. Cooling chamber; 32. Semiconductor heat sink; 33. Auxiliary heat dissipation chamber; 34. Heat dissipation fins; 35. Fan; 4. Liquid pump; 41. Liquid pump one; 42. Liquid pump two; 43. Liquid pump three; 44. Liquid pump four; 45. Liquid pump five; 46. Liquid pump six; 47. Liquid pump seven; 48. Liquid pump eight; 49. Liquid pump nine; 410. Liquid pump ten; 5. Small refrigeration equipment. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0034] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0035] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0036] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0037] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0038] Please see Figure 1-7 This application provides a miniaturized magnetic refrigeration module, including: a housing 1, a magnetic refrigeration component 2, and a heat dissipation component 3.

[0039] See Figure 1 and Figure 2 The housing 1 has an inlet 11 for coolant to flow in and an outlet 12 for coolant to flow out. The housing 1 has a heat exchange chamber 13, and both the inlet 11 and the outlet 12 are connected to the heat exchange chamber 13. The heat exchange chamber 13 can be a chamber located at any position within the housing 1. The inlet 11 and the outlet 12 can be directly connected to the heat exchange chamber 13, or connected to the heat exchange chamber 13 via other components.

[0040] See Figure 2 and Figure 7 The magnetic refrigeration assembly 2 is located in the heat exchange chamber 13. The magnetic refrigeration assembly 2 includes a magnetothermal material 21 and a magnetic field generating mechanism 22. The magnetic field generating mechanism 22 is used to magnetize the demagnetized magnetothermal material 21. Both the inlet 11 and outlet 12 are connected to the magnetothermal material 21 via the heat exchange chamber 13. The magnetic refrigeration assembly 2 is fixedly located in the heat exchange chamber 13. Under normal conditions, the magnetothermal material 21 is demagnetized and can absorb heat from the coolant to cool it down. When the magnetic field generating mechanism 22 acts on the magnetothermal material 21, the magnetothermal material is magnetized and can release heat to the coolant to raise its temperature.

[0041] See Figure 2-4 The heat dissipation component 3 is at least partially disposed within the housing 1. The heat dissipation component 3 is adjacent to and connected to the heat exchange chamber 13. The magnetocaloric material 21 is connected to the heat dissipation component 3 via the heat exchange chamber 13. The heat dissipation component 3 is used to dissipate heat from the magnetocaloric material 21. When the coolant flows through the magnetized magnetocaloric material 21, the magnetocaloric material 21 releases heat to the coolant. The coolant carrying heat is cooled down when it flows through the heat dissipation component 3, thereby achieving the purpose of dissipating heat from the magnetocaloric material 21.

[0042] Based on this, after the coolant enters the heat exchange chamber 13 from the inlet 11, it flows through the magnetocaloric material 21. At this time, the magnetic field generating mechanism 22 acts on the magnetocaloric material 21 to magnetize it, thereby releasing heat from the magnetocaloric material 21 to the coolant. Then, the coolant flows through the heat dissipation component 3 to dissipate heat and cool down, and then flows back to the magnetocaloric material 21. At this time, the magnetic field generating mechanism 22 does not act on the magnetocaloric material 21, and the magnetocaloric material 21 demagnetizes to absorb heat, thereby cooling down the coolant. Finally, the coolant flows out through the outlet 12 for refrigeration.

[0043] In this embodiment, the magnetic refrigeration component 2 is disposed inside the housing 1, and the heat dissipation component 3 is at least partially disposed inside the housing 1, so that the magnetic refrigeration component 2 and the heat dissipation component 3 are integrated and modularized, realizing the magnetic refrigeration. It not only has a small volume and occupies less space during installation, meeting the requirements of miniaturization, but can also be well applied to small refrigeration equipment 5. Moreover, it does not require separate installation of each magnetic refrigeration component, and has the characteristics of simple assembly.

[0044] It should be noted that the miniaturized magnetic refrigeration module in this application embodiment can be applied to circulating liquid cooling in the field of robotics. The miniature refrigeration device 5 can be a small device such as a robot's motor, battery, driver, controller, or camera. During operation, the heat generated can be dissipated and cooled by the miniaturized magnetic refrigeration module to achieve efficient cooling and ensure the robot's efficient operation. Of course, there are various types of miniature refrigeration devices 5, and their cooling requirements can all be met by the miniaturized magnetic refrigeration module in this application embodiment. Since different miniature refrigeration devices 5 require different cooling power, a miniature magnetic refrigeration module with appropriate power can be adapted according to the actual application scenario.

[0045] See Figure 2 and Figure 7 The magnetothermal material 21 is filled in the magnetic carrier 23. The heat dissipation component 3, the inlet 11 and the outlet 12 are all connected to the magnetic carrier 23 through the heat exchange cavity 13 to connect the magnetothermal material 21. The magnetic field generating mechanism 22 includes a permanent magnet 221 and a transposition mechanism. The transposition mechanism is connected to the permanent magnet 221 and drives the permanent magnet 221 to move closer to or away from the magnetic carrier 23.

[0046] The magnetic carrier 23 can be a chamber, a bed, or any other structure that can be filled with magnetocaloric material 21. Coolant flows into the magnetic carrier 23 and passes through the magnetocaloric material 21 inside, thereby achieving the purpose of absorbing or releasing heat. The magnetization and heat release or demagnetization and heat absorption of the magnetocaloric material 21 is achieved through a transposition mechanism and a permanent magnet 221. When the transposition mechanism drives the permanent magnet 221 close to the magnetic carrier 23, the magnetocaloric material 21 is magnetized to release heat to the coolant. When the transposition mechanism drives the permanent magnet 221 away from the magnetic carrier 23, the magnetocaloric material 21 is demagnetized to absorb heat from the coolant.

[0047] In one or more embodiments, two magnetic carriers 23 are spaced apart, each filled with a magnetocaloric material 21. The magnetic field generating mechanism 22 sequentially and intermittently magnetizes the magnetocaloric material 21 in the two magnetic carriers 23. The magnetized magnetocaloric material 21 releases heat to raise the temperature of the coolant, while the demagnetized magnetocaloric material 21 absorbs heat to lower the temperature of the coolant. Thus, the coolant flowing in through the inlet 11 passes sequentially through the magnetized magnetocaloric material 21, the heat dissipation component 3, and the demagnetized magnetocaloric material 21 to cool down, and then flows out through the outlet 12 to cool the small refrigeration device 5.

[0048] The magnetothermal materials 21 in the two magnetic carriers 23 are magnetized and demagnetized in sequence, so that the two magnetic carriers 23 can work at the same time and the coolant can circulate. While some of the coolant carries away the heat from the magnetothermal materials 21, some of the coolant is cooled by the demagnetized magnetothermal materials 21, which improves the coolant circulation efficiency and allows the coolant to be continuously cooled, resulting in a lower coolant temperature, so as to ensure the cooling efficiency and cooling temperature of the small refrigeration device 5.

[0049] It is worth noting that there can be more than two magnetic carriers 23, and their working principle is the same as or similar to that of the two magnetic carriers 23 mentioned above. There can be one permanent magnet 221, or there can be two or more, depending on the number of magnetic carriers 23 and the magnetization requirements.

[0050] In one or more embodiments, the switching mechanism includes a motor 222 and a rotating shaft 223. A permanent magnet 221 is disposed in the heat exchange chamber 13, the motor 222 is disposed outside the housing 1, and the rotating shaft 223 passes through the housing 1. The output shaft of the motor 222 is fixedly connected to the permanent magnet 221 via the rotating shaft 223. A bearing 224 is provided between the rotating shaft 223 and the cavity wall of the housing 1. The operation of the motor 222 drives the rotating shaft 223 to rotate, thereby driving the permanent magnet 221 to move between the two magnetic carriers 23, magnetizing the magnetothermal material 21 in the two magnetic carriers 23 respectively. It has the characteristics of simple structure, convenient operation, and can accurately control the position of the permanent magnet 221.

[0051] Motor 222 is located outside housing 1 for easy power connection. Motor 222 can be completely located outside housing 1 or partially exposed outside housing 1. A mounting position can be provided in housing 1, for example... Figure 1The heat dissipation component 3 has a mounting position for the motor 222, so that part of the motor 222 is exposed outside the housing 1, reducing the overall size of the module. One end of the rotating shaft 223 is fixedly connected to the output shaft of the motor 222. The rotating shaft 223 passes through the heat exchange cavity 13 to fixally connect the permanent magnet 221, so that the motor 222 can drive the permanent magnet 221 to move between the two magnetic carriers 23 by means of the rotating shaft 223. When the rotating shaft 223 passes through the heat exchange cavity 13, it is at least connected to the cavity wall of the heat exchange cavity 13. The bearing 224 between the rotating shaft 223 and the cavity wall helps to improve the rotation efficiency of the rotating shaft 223.

[0052] See Figure 1-2 The heat dissipation assembly 3 includes a cooling chamber 31 and a semiconductor heat sink 32. The cooling chamber 31 is located inside the housing 1 and is adjacent to and connected to the heat exchange chamber 13. The magnetocaloric material 21 is connected to the cooling chamber 31 via the heat exchange chamber 13. The semiconductor heat sink 32 is located on the side of the cooling chamber 31 away from the heat exchange chamber 13, and the cold end of the semiconductor heat sink 32 is in contact with the cooling chamber 31. The adjacent arrangement of the cooling chamber 31 and the heat exchange chamber 13 can further reduce the volume of the magnetic refrigeration module. The coolant flows through the magnetized magnetocaloric material 21 and is heated, and then flows into the cooling chamber 31. The cold end of the semiconductor heat sink 32 absorbs the heat of the coolant to cool it down, and transfers the heat to the hot end of the semiconductor heat sink 32 for dissipation. Then the coolant flows back to the magnetized magnetocaloric material 21 to cool down.

[0053] The heat dissipation assembly 3 also includes an auxiliary heat dissipation cavity 33, which is attached to the hot end of the semiconductor heat sink 32. The auxiliary heat dissipation cavity 33 contains heat dissipation fins 34, and both its air inlet and outlet are equipped with fans 35. During long-term operation of the miniaturized magnetic refrigeration module, the heat dissipation from the hot end of the semiconductor heat sink 32 gradually slows down, thus affecting the cooling effect of the cooling chamber 31 on the coolant. This embodiment addresses this by attaching an auxiliary heat dissipation structure—the auxiliary heat dissipation cavity 33, the heat dissipation fins 34, and the fan 35—to the hot end of the semiconductor heat sink 32. Airflow is blown into the auxiliary heat dissipation cavity 33, allowing the heat to be carried away by the heat dissipation fins 34 and then expelled by the airflow, thereby improving the heat dissipation effect of the heat dissipation assembly 3 and ensuring the cooling effect of the coolant.

[0054] See Figure 2-3 and Figure 6A pre-cooling chamber 14 is provided along the flow path of the coolant from the cooling chamber 31 to the magnetocaloric material 21. The pre-cooling chamber 14 is nested around the cooling chamber 31 and connected by a pipe 19. An insulation chamber 15 for filling with insulation material is provided between the pre-cooling chamber 14 and the cooling chamber 31. The pre-cooling chamber 14 can further cool the coolant in the heat dissipation component 3. By setting the pre-cooling chamber 14, the coolant discharged from the heat dissipation component 3 can be received and temporarily stored, and the temperature of the coolant discharged from the heat dissipation component 3 can be adjusted and balanced. At the same time, the coolant can slowly enter the demagnetized magnetocaloric material 21 to ensure that the demagnetized magnetocaloric material can fully absorb the heat in the coolant to obtain a coolant with a lower temperature.

[0055] The cooling chamber 31 is surrounded by the pre-cooling chamber 14 and connected to it via pipe 19. This helps to reduce the size of the magnetic refrigeration module and further miniaturize it. The insulation chamber 15 can be filled with insulation materials such as insulation cotton to achieve insulation between the pre-cooling chamber 14 and the cooling chamber 31. This prevents the high-temperature coolant entering the cooling chamber 31 from transferring heat to the low-temperature coolant in the pre-cooling chamber 14, thus ensuring the cooling effect of the coolant.

[0056] See Figure 2 , Figure 4-5 The housing 1 contains a preheating chamber 16, which is adjacent to and connected to the heat exchange chamber 13. The preheating chamber 16 is located on the side of the heat exchange chamber 13 away from the heat dissipation assembly 3. The inlet 11 is connected to the heat exchange chamber 13 via the preheating chamber 16. The preheating chamber 16 can receive the coolant flowing in from the inlet 11, allowing for temporary storage of the coolant and achieving balanced temperature regulation. It also helps to increase the amount of coolant, enabling the coolant to slowly enter the magnetized magnetothermal material 21 and subsequent cooling components, ensuring sufficient cooling.

[0057] The casing 1 contains a cold storage chamber 17, which is nested around a preheating chamber 16. An insulating chamber 18, filled with insulating material, is located between the cold storage chamber 17 and the preheating chamber 16. The outlet 12 connects to the heat exchange chamber 13 via the cold storage chamber 17. The cold storage chamber 17 primarily stores the coolant after the demagnetized magnetocaloric material 21 has cooled, and this coolant is then supplied to the small refrigeration unit via the outlet 12. The cold storage chamber 17 serves two purposes: it temporarily stores the coolant, allowing the small refrigeration unit to adjust the amount and flow rate of coolant from the outlet 12 according to cooling needs, ensuring on-demand cooling; it also balances the coolant temperature and increases the coolant flow rate by adding longitudinal beams, providing a large amount of coolant during periods of high cooling demand, thus improving refrigeration efficiency.

[0058] The cold storage chamber 17 is surrounded by the preheating chamber 16, which helps to reduce the size of the magnetic refrigeration module and further realize the miniaturization of the magnetic refrigeration module. The insulation chamber 18 can be filled with insulation cotton or other heat insulation materials to achieve heat insulation between the cold storage chamber 17 and the preheating chamber 16, and prevent the high-temperature coolant entering the preheating chamber 16 from transferring heat to the low-temperature coolant in the cold storage chamber 17, so as to ensure the cooling effect of the coolant.

[0059] See Figure 2 The magnetic carrier 23 is equipped with a liquid pump 4 at its channels 24, inlet 11, and outlet 12 for coolant entry and exit. The liquid pump 4 in this embodiment can be a piezoelectric pump, which, compared to a mechanical pump, offers advantages such as high-precision flow control, no electromagnetic interference, simple and compact structure, low noise, fast response, good sealing, long service life, and small size. A liquid pump 1 41 is installed at outlet 12, a liquid pump 2 42 is installed at inlet 11, a liquid pump 3 43 is installed on channel 24 from preheating chamber 16 to first magnetic carrier 23, a liquid pump 44 is installed on channel 24 from first magnetic carrier 23 to cooling chamber 31, a liquid pump 5 45 is installed on channel 24 from precooling chamber 14 to second magnetic carrier 23, a liquid pump 6 46 is installed on channel 24 from second magnetic carrier 23 to cold storage chamber 17, a liquid pump 7 47 is installed on channel 24 from preheating chamber 16 to second magnetic carrier 23, a liquid pump 8 48 is installed on channel 24 from second magnetic carrier 23 to cooling chamber 31, a liquid pump 9 49 is installed on channel 24 from precooling chamber 14 to first magnetic carrier 23, and a liquid pump 10 410 is installed on channel 24 from first magnetic carrier 23 to cold storage chamber 17.

[0060] In one or more embodiments, the channels 24 for coolant entry into the magnetic carrier 23 and the channels 24 for coolant exit from the magnetic carrier 23 are staggered along the same coolant flow path. This increases the coolant flow path and improves heat exchange efficiency.

[0061] Combination Figure 8 The working process of the miniaturized magnetic refrigeration module in this application embodiment will be described in detail, taking the small refrigeration device 5 as the joint motor of the robot as an example.

[0062] Liquid pump 41 delivers coolant from the cold storage chamber 17 to the flow channel of the robot's joint motor via outlet 12 to cool the joint motor and raise the coolant's temperature due to heat absorption. Then, under the action of liquid pump 42, the coolant is delivered to the preheating chamber 16 via inlet 11. The coolant in the preheating chamber 16 enters the first magnetic carrier 23 under the action of liquid pump 43. At this time, the permanent magnet 221 approaches the first magnetic carrier 23, magnetizing the magnetothermal material 21 within the first magnetic carrier 23 and releasing heat to the coolant entering the first magnetic carrier 23. The coolant, absorbing heat from the magnetized magnetothermal material 21 within the first magnetic carrier 23, enters the cooling chamber 31 of the heat dissipation assembly 3 under the action of liquid pump 44. Heat is dissipated using semiconductor heat sink 32 in conjunction with auxiliary heat dissipation cavity 33, heat dissipation fins 34, and fan 35 to obtain a coolant at a lower temperature. The coolant cooled by the cooling chamber 31 enters the precooling chamber 14 through pipe 19 and is temporarily stored in the precooling chamber 14. The coolant in the precooling chamber 14 enters the second magnetic carrier 23 through the liquid pump 45. At this time, the permanent magnet 221 moves away from the second magnetic carrier 23, and the magnetothermal material 21 in the second magnetic carrier 23 is demagnetized, absorbing the heat in the coolant to cool it down. Then, the cooled coolant enters the cold storage chamber 17 through the liquid pump 46.

[0063] The coolant in the cold storage chamber 17 is then pumped by pump 41 to the flow channel of the joint motor to cool the joint motor and raise the temperature of the coolant by absorbing heat. Then, under the action of pump 42, the coolant is pumped through inlet 11 to the preheating chamber 16. At this time, the motor 222 drives the permanent magnet 221 to change position through the rotating shaft 223. The permanent magnet moves close to the second magnetic carrier 23, at which point the magnetocaloric material 21 in the second magnetic carrier 23 is magnetized, and the magnetocaloric material 21 in the first magnetic carrier 23 is demagnetized. The coolant in the preheating chamber 16 enters the second magnetic carrier 23 under the action of pump 47. The coolant in the magnetocaloric material 21 in the second magnetic carrier 23 releases heat. The coolant that absorbs the heat from the magnetized magnetocaloric material 21 in the second magnetic carrier 23 is pumped by pump 48 into the cooling chamber 31 of the heat dissipation assembly 3. The semiconductor heat sink 32, combined with the auxiliary heat dissipation cavity 33, heat dissipation fins 34 and fan 35, dissipates heat to obtain a coolant at a lower temperature. The coolant cooled by the cooling chamber 31 enters the pre-cooling chamber 14 through the pipe 19 and is temporarily stored in the pre-cooling chamber 14. The coolant in the pre-cooling chamber 14 enters the first magnetic carrier 23 through the liquid pump 49. The magnetothermal material 21 in the first magnetic carrier 23 absorbs the heat in the coolant to cool it down. Then the cooled coolant enters the cold storage chamber 17 through the liquid pump 410.

[0064] This completes one refrigeration cycle.

[0065] The above provides a detailed description of a miniaturized magnetic refrigeration module disclosed in the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the miniaturized magnetic refrigeration module and its core idea. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A miniaturized magnetic refrigeration module, characterized in that, include: The housing has an inlet for coolant to flow in and an outlet for coolant to flow out. The housing has a heat exchange chamber inside, and the inlet and the outlet are both connected to the heat exchange chamber. A magnetic refrigeration assembly is disposed in the heat exchange cavity. The magnetic refrigeration assembly includes a magnetocaloric material and a magnetic field generating mechanism. The magnetic field generating mechanism is used to magnetize the demagnetized magnetocaloric material. The inlet and the outlet are both connected to the magnetocaloric material through the heat exchange cavity. A heat dissipation assembly is provided, at least partially disposed within the housing, adjacent to and connected to the heat exchange cavity, wherein the magnetocaloric material is connected to the heat dissipation assembly via the heat exchange cavity, and the heat dissipation assembly is used to dissipate heat from the magnetocaloric material.

2. The miniaturized magnetic refrigeration module according to claim 1, characterized in that: The magnetocaloric material is filled in the magnetic carrier, and the heat dissipation component, the inlet and the outlet are all connected to the magnetic carrier through the heat exchange cavity to connect the magnetocaloric material; The magnetic field generating mechanism includes a permanent magnet and a transposition mechanism. The transposition mechanism is connected to the permanent magnet and drives the permanent magnet to move closer to or away from the magnetic carrier.

3. The miniaturized magnetic refrigeration module according to claim 2, characterized in that: The switching mechanism includes a motor and a rotating shaft. The permanent magnet is disposed in the heat exchange cavity. The motor is disposed outside the housing. The rotating shaft passes through the housing. The output shaft of the motor is fixedly connected to the permanent magnet via the rotating shaft. A bearing is provided between the rotating shaft and the cavity wall of the housing.

4. The miniaturized magnetic refrigeration module according to claim 1 or 2, characterized in that: The heat dissipation assembly includes a cooling chamber and a semiconductor heat sink. The cooling chamber is located inside the housing and is adjacent to and connected to the heat exchange cavity. The magnetocaloric material is connected to the cooling chamber through the heat exchange cavity. The semiconductor heat sink is located on the side of the cooling chamber away from the heat exchange cavity, and the cold end of the semiconductor heat sink is attached to the cooling chamber.

5. The miniaturized magnetic refrigeration module according to claim 4, characterized in that: The heat dissipation assembly also includes an auxiliary heat dissipation cavity, which is disposed in conjunction with the hot end of the semiconductor heat sink. The auxiliary heat dissipation cavity is provided with heat dissipation fins, and both the air inlet and air outlet of the auxiliary heat dissipation cavity are provided with fans.

6. The miniaturized magnetic refrigeration module according to claim 4, characterized in that: A pre-cooling chamber is provided along the flow path of the coolant from the cooling chamber to the magnetocaloric material. The pre-cooling chamber and the cooling chamber are arranged in a nested manner and connected by a pipe. An insulation chamber for filling with insulation material is provided between the pre-cooling chamber and the cooling chamber.

7. The miniaturized magnetic refrigeration module according to claim 1 or 2, characterized in that: The housing is provided with a preheating chamber, which is adjacent to and connected to the heat exchange cavity. The preheating chamber is located on the side of the heat exchange cavity away from the heat dissipation assembly, and the inlet is connected to the heat exchange cavity through the preheating chamber.

8. The miniaturized magnetic refrigeration module according to claim 7, characterized in that: The shell contains a cold storage chamber, which is nested around the preheating chamber. An insulation chamber for filling with insulation material is provided between the cold storage chamber and the preheating chamber. The outlet is connected to the heat exchange chamber through the cold storage chamber.

9. The miniaturized magnetic refrigeration module according to claim 2, characterized in that: The magnetic carrier is equipped with a liquid pump for the channel for coolant entry and exit, the inlet, and the outlet.

10. The miniaturized magnetic refrigeration module according to claim 9, characterized in that: On the same coolant flow path, the channel for coolant to enter the magnetic carrier and the channel for coolant to exit the magnetic carrier are staggered.

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