Magnetic refrigeration refrigerator

Abstract

The application relates to a magnetic refrigeration refrigerator, and relates to the technical field of refrigerators. The magnetic refrigeration refrigerator comprises a refrigeration chamber, a refrigeration circuit, a magnetic refrigeration assembly and a flow-collecting heat exchanger. The refrigeration circuit is used for cooling the refrigeration chamber. The flow-collecting heat exchanger is communicated with the refrigeration circuit, and the flow-collecting heat exchanger is in heat exchange with a refrigeration side of the magnetic refrigeration assembly and is used for cooling fluid medium flowing through the flow-collecting heat exchanger. A flow-collecting cavity is arranged in the flow-collecting heat exchanger and is used for storing the fluid medium flowing through the flow-collecting heat exchanger. The magnetic refrigeration refrigerator does not need to use a phase-change refrigerant with poor environmental protection, and has good environmental protection.

Description

Technical Field

[0001] This application relates to the field of refrigerator technology, and more particularly to a magnetic refrigeration refrigerator. Background Technology

[0002] Refrigerators are common household appliances. Currently, refrigerators cool by using a compressor to circulate refrigerant between the evaporator and condenser. The liquid refrigerant absorbs heat by vaporizing in the evaporator, thereby cooling the refrigerator compartment and the freezer compartment.

[0003] However, phase-change refrigerants such as hydrochlorofluorocarbons, chlorofluorocarbons, or Freon have adverse effects on the ozone layer, water sources, and soil, resulting in poor environmental performance of the products. Utility Model Content

[0004] This application provides a magnetic refrigeration refrigerator that does not require the use of phase change refrigerants, which have poor environmental performance, and thus has better environmental performance.

[0005] This application provides a magnetic refrigeration refrigerator, including a refrigeration compartment, a refrigeration circuit, a magnetic refrigeration assembly, and a heat exchanger. The refrigeration circuit is used to cool the refrigeration compartment. The heat exchanger is connected to the refrigeration circuit, and the heat exchanger is configured to exchange heat with the refrigeration side of the magnetic refrigeration assembly, for cooling the fluid medium flowing through the heat exchanger in the refrigeration circuit. The heat exchanger has a collection chamber for storing the fluid medium flowing through it.

[0006] Optionally, the magnetic refrigeration assembly includes a bidirectional pump, a magnetic refrigerator, a hot-end collector, a cold-end collector, and a drive motor. The bidirectional pump includes a pump body and a first liquid port and a second liquid port communicating with the pump body. The magnetic refrigerator has a third liquid port and a fourth liquid port. The two ends of the hot-end collector are connected to the first liquid port and the third liquid port. The two ends of the cold-end collector are connected to the second liquid port and the fourth liquid port. The cold-end collector is configured to exchange heat with a collector heat exchanger for cooling the refrigeration circuit. The drive motor is connected to the pump body and the magnetic refrigerator to drive the pump body and the magnetic refrigerator to circulate between the first cycle and the second cycle.

[0007] When the pump body and magnetic chiller are in the first cycle, the magnetic chiller is in a demagnetized state and absorbs heat, and the pump body drives the fluid medium to flow from the fourth liquid port to the cold end collector.

[0008] When the pump body and magnetic chiller are in the second cycle, the magnetic chiller is in an excited state and releases heat, and the pump body drives the fluid medium to flow from the third liquid port to the hot end collector.

[0009] Optionally, the magnetic refrigerator includes a sleeve, a magnet, a magnetothermal element, and a heat collection tube. The magnet has a plate-like structure and is disposed inside the sleeve. Along the radial direction of the sleeve, the magnetothermal element is disposed on the inner side of the magnet away from the sleeve. The heat collection tube has a heat collection cavity and a third liquid port and a fourth liquid port communicating with the heat collection cavity. Along the radial direction of the sleeve, the heat collection tube is disposed outside or inside the magnetothermal element.

[0010] When the magnetic refrigerator is in the first cycle, the magnet and the magnetothermal element rotate relative to each other, so that the radial overlap area between the magnetothermal element and the magnet decreases. The magnetothermal element is in a demagnetized state and absorbs heat from the heat collection tube.

[0011] When the magnetic refrigerator is in the second cycle, the magnet and the magnetothermal element rotate relative to each other, so that the overlap area between the magnetothermal element and the magnet increases radially. The magnetothermal element is in an excited state and releases heat toward the heat collection tube.

[0012] Optionally, the magnetic refrigerator includes a sleeve, a magnetothermal element, a magnet, and a heat collection tube. The magnetothermal element has a sheet-like structure and is disposed inside the sleeve. Along the radial direction of the sleeve, the magnet is disposed on the inner side of the magnetothermal element away from the sleeve, and the heat collection tube is disposed between the magnetothermal element and the magnet. The heat collection tube has a heat collection cavity and a third liquid port and a fourth liquid port communicating with the heat collection cavity.

[0013] When the magnetic refrigerator is in the first cycle, the magnet and the magnetothermal element rotate relative to each other, so that the radial overlap area between the magnetothermal element and the magnet decreases, and the magnetothermal element is in a demagnetized state and absorbs heat.

[0014] When the magnetic refrigerator is in the second cycle, the magnet and the magnetothermal element rotate relative to each other, so that the overlap area between the magnetothermal element and the magnet increases radially, and the magnetothermal element is in an excited state and releases heat.

[0015] Optionally, the drive motor is connected to the magnetothermal element in a transmission connection to drive the magnetothermal element to rotate cyclically between a demagnetized state and an excitation state.

[0016] Optionally, the drive motor is connected to the magnet drive to drive the magnet to rotate cyclically between the first cycle and the second cycle.

[0017] Optionally, there are multiple magnets, which are spaced apart circumferentially along the sleeve. The number of magnetothermal elements is the same as the number of magnets, and they are spaced apart axially along the sleeve. When the magnetic refrigerator enters the first cycle, the radial overlap area between each magnet and one magnetothermal element is at its maximum. When the magnetic refrigerator enters the second cycle, the radial overlap area between each magnet and one magnetothermal element is at its minimum or non-overlapping.

[0018] Optionally, the magnetothermal element is filled with a magnetothermal medium, which releases heat in the energized state and absorbs heat in the demagnetized state.

[0019] Optionally, the magnetocaloric element is filled with a lanthanum-iron-silicon alloy.

[0020] Optionally, the magnetic refrigeration assembly also includes a porous workpiece, which covers the bidirectional pump, the magnetic refrigeration machine, the hot-end collector, the cold-end collector, and the drive motor, and the porous workpiece is arranged in contact with the hot-end collector.

[0021] Optionally, the heat exchanger includes a tank with a collection chamber and a first collection port, a second collection port, a third collection port, and a fourth collection port communicating with the collection chamber. The two ends of the refrigeration circuit are connected to the first and second collection ports. The magnetic refrigeration refrigerator also includes a collection circuit, which is configured to exchange heat with the cold-end heat collector, and the two ends of the collection circuit are connected to the third and fourth collection ports. The fluid media of the collection circuit and the refrigeration circuit are mixed and stored in the collection chamber.

[0022] Optionally, the heat exchanger further includes at least one baffle plate located inside the collection chamber and connected to the tank body to increase the flow path of the fluid medium within the collection chamber.

[0023] Optionally, within the manifold, the flow direction of the refrigeration circuit between the first and second manifolds is a first direction, and the flow direction of the manifold circuit between the third and fourth manifolds is a second direction, with the first and second directions being at least partially opposite.

[0024] Optionally, the magnetic refrigeration refrigerator includes a cabinet, a door, a door seal, a piezoelectric layer, and a battery assembly. The cabinet contains one or more refrigeration compartments. The door is hinged to the cabinet for opening or closing the refrigeration compartments. The door seal is located between the door and the cabinet to seal the gap between them, and the piezoelectric layer is located within the door seal. The battery assembly is electrically connected to the piezoelectric layer and the magnetic refrigeration assembly. The piezoelectric layer charges the battery assembly, and the battery assembly drives the magnetic refrigeration assembly to cool the refrigeration circuit.

[0025] The technical solutions provided in this application have the following advantages compared with the prior art:

[0026] Thus, the magnetic refrigeration component absorbs heat through the demagnetization process of the magnetothermal medium, thereby achieving a cooling effect on its cooling side. Since the cooling side of the magnetic refrigeration component and the refrigeration circuit can exchange heat through a heat exchanger, this heat is used to cool the fluid medium in the refrigeration circuit. This allows the fluid medium in the refrigeration circuit to cool one or more refrigeration compartments, enabling the magnetic refrigeration refrigerator to maintain a suitable low temperature within the refrigeration compartments, thereby extending the shelf life of items within the refrigeration compartments.

[0027] Compared to existing technologies that use a compressor and phase-change refrigerant to vaporize and absorb heat in the evaporator, this application's solution cools the refrigeration compartment by absorbing heat through the demagnetization of the magnetothermal medium in the magnetic refrigeration component. Furthermore, only fluids with low freezing points are needed in the refrigeration circuit and the heat exchanger. In other words, this application's solution eliminates the need for phase-change refrigerants such as hydrochlorofluorocarbons (HCFCs), chlorofluorocarbons (CFCs), or Freon throughout the refrigeration process, preventing ozone layer depletion due to refrigerant leakage and thus offering superior environmental friendliness.

[0028] Furthermore, in the aforementioned magnetic refrigeration refrigerator, between the refrigeration circuit and the magnetic refrigeration component, a collection chamber for storing fluid medium is provided in the heat exchanger. This allows the collection chamber to store the flowing fluid medium while simultaneously buffering some of the cold energy through the low-temperature fluid medium, thereby avoiding frequent starts of the magnetic refrigeration component and enabling the refrigeration compartment to have a better refrigeration effect through the stored low-temperature fluid medium. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0032] Figure 1 A three-dimensional structural schematic diagram of the first type of magnetic refrigeration refrigerator provided in the embodiments of this application;

[0033] Figure 2 A cross-sectional view of a second type of magnetic refrigeration refrigerator provided in an embodiment of this application;

[0034] Figure 3 for Figure 1 The diagram shows an internal structure of a magnetic refrigeration refrigerator.

[0035] Figure 4 for Figure 3The diagram shows the structure of the heat exchanger, refrigeration circuit, and heat collection circuit shown in the figure.

[0036] Figure 5 for Figure 3 A schematic diagram of the magnetic refrigeration component shown in the figure;

[0037] Figure 6 for Figure 5 A schematic diagram of a connection structure for the magnetic chiller, drive motor, and bidirectional pump shown in the figure;

[0038] Figure 7 for Figure 6 The image shows a side view of a magnetic refrigeration unit.

[0039] Figure 8 A side view of another magnetic refrigerator provided in an embodiment of this application;

[0040] Figure 9 for Figure 2 A schematic diagram of the internal structure of the door seal shown in the image;

[0041] Figure 10 This is a schematic diagram of the electrical connection structure of a magnetic refrigeration refrigerator provided in an embodiment of this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 100. Cabinet body; 110. Refrigeration compartment; 111. Cold storage compartment; 112. Freezer compartment; 113. Variable temperature compartment;

[0044] 200. Door body;

[0045] 300. Refrigeration circuit; 310. Refrigeration pump; 320. Refrigeration heat exchanger; 330. Refrigeration fan; 340. Thermostat; 350. Temperature sensor;

[0046] 400. Magnetic refrigeration assembly; 410. Bidirectional pump; 411. Pump body; 412. First liquid port; 413. Second liquid port; 420. Magnetic refrigerator; 421. Sleeve; 422. Magnet; 423. Magnetothermal element; 424. Heat collection tube; 4241. Heat collection chamber; 4242. Third liquid port; 4243. Fourth liquid port; 425. Porous workpiece; 430. Hot-end heat collector; 440. Cold-end heat collector; 450. Drive motor;

[0047] 500. Heat exchanger; 510. Tank body; 511. Collection chamber; 512. First collection port; 513. Second collection port; 514. Third collection port; 515. Fourth collection port; 520. Baffle plate;

[0048] 600. Collector loop;

[0049] 710. Door seal; 720. Piezoelectric dielectric layer; 721. First buffer layer; 722. First electrode layer; 723. Piezoelectric material layer; 724. Second electrode layer; 725. Second buffer layer; 730. Battery assembly. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0052] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0053] Figure 1 This is a three-dimensional structural diagram of the first type of magnetic refrigeration refrigerator provided in the embodiments of this application. Figure 2 A cross-sectional view of a second type of magnetic refrigeration refrigerator provided in an embodiment of this application. Figure 3 for Figure 1 The diagram shows an internal structure of a magnetic refrigeration refrigerator. Figure 4for Figure 3 The diagram shows the structure of the heat exchanger, refrigeration circuit, and heat collection circuit. Figure 5 for Figure 3 The diagram shows the structure of the magnetic refrigeration component. Figure 6 for Figure 5 The diagram shows a connection structure of the magnetic chiller, drive motor, and bidirectional pump. Figure 7 for Figure 6 The image shows a side view of a magnetic refrigeration unit. Figure 8 A side view of another magnetic refrigerator provided in an embodiment of this application. Figure 9 for Figure 2 The diagram shows a structural schematic of the interior of the door seal. Figure 10 This is a schematic diagram of the electrical connection structure of a magnetic refrigeration refrigerator provided in an embodiment of this application.

[0054] Please see Figures 1 to 10 The embodiments of this application provide a magnetic refrigeration refrigerator, which does not require the use of phase change refrigerants with poor environmental performance and has good environmental performance.

[0055] like Figure 1 and Figure 2 As shown, the magnetic refrigeration refrigerator includes a cabinet 100 and a door 200. The cabinet 100 has one or more refrigeration compartments 110 inside. The door 200 is hinged to the cabinet 100 and is used to open or close the refrigeration compartments 110. The door 200 opens the refrigeration compartments 110, allowing users to store items inside. The door 200 closes the refrigeration compartments, improving their sealing effect and thus preserving the items inside at low temperatures.

[0056] like Figure 2 The refrigeration compartment 110 shown may include at least one of a refrigerator compartment 111, a freezer compartment 112, and a variable temperature compartment 113. For example... Figure 2 As shown, the refrigeration compartment 111, the variable temperature compartment 113, and the freezer compartment 112 are arranged from top to bottom so that users can choose different temperature ranges in the refrigeration compartment 110 to store items according to different needs.

[0057] The variable-temperature compartment 113 can flexibly adjust its temperature within a range of -20℃ to 5℃ as needed. For example, it can switch to either freezing or refrigeration temperature to supplement insufficient temperature in the freezing compartment 112 or refrigeration compartment 111. Alternatively, it can be set to 0℃ to improve the preservation of items. The temperature can also be set to -7℃ to 0℃ for short-term storage of specific ingredients such as meat.

[0058] In some embodiments, such as Figure 3As shown, the magnetic refrigeration refrigerator includes a refrigeration circuit 300, a magnetic refrigeration assembly 400, and a collector heat exchanger 500. The refrigeration circuit 300 is used for cooling. Figure 2 The refrigeration compartment 110 is shown as either a refrigerator compartment 111 or a freezer compartment 112. A heat exchanger 500 is connected to the refrigeration circuit 300, and the heat exchanger 500 is configured to exchange heat with the refrigeration side of the magnetic refrigeration assembly 400, for cooling the fluid medium flowing through the heat exchanger 500 in the refrigeration circuit 300. The heat exchanger 500 has a collection chamber 511 for storing the fluid medium flowing through it.

[0059] Thus, the magnetic refrigeration component 400 absorbs heat through the demagnetization process of the magnetothermal medium, thereby achieving a cooling effect on the refrigeration side of the magnetic refrigeration component 400. Since the refrigeration side of the magnetic refrigeration component 400 and the refrigeration circuit 300 can exchange heat through the heat exchanger 500, the heat is used to cool the fluid medium in the refrigeration circuit 300. This allows the fluid medium in the refrigeration circuit 300 to cool one or more refrigeration compartments 110, enabling the magnetic refrigeration refrigerator to maintain a suitable low temperature within the refrigeration compartments 110, thereby extending the shelf life of items within the refrigeration compartments 110.

[0060] Compared to existing technologies that use a compressor and phase-change refrigerant to vaporize and absorb heat in the evaporator, this application's solution cools the refrigeration compartment 110 by absorbing heat during the demagnetization of the magnetothermal medium in the magnetic refrigeration component 400. Furthermore, only fluids with low freezing points are needed in the refrigeration circuit 300 and the collector heat exchanger 500. In other words, this application's solution eliminates the need for phase-change refrigerants such as hydrochlorofluorocarbons (HCFCs), chlorofluorocarbons (CFCs), or Freon throughout the refrigeration process, preventing ozone layer depletion due to refrigerant leakage and thus offering superior environmental friendliness.

[0061] Furthermore, between the refrigeration circuit 300 and the magnetic refrigeration component 400 of the aforementioned magnetic refrigeration refrigerator, a collection chamber 511 for storing fluid medium is provided in the heat exchanger 500. This allows the collection chamber 511 to store the flowing fluid medium while simultaneously buffering some of the cold energy through the low-temperature fluid medium, thereby avoiding frequent starts of the magnetic refrigeration component 400 and enabling the refrigeration chamber 110 to have a better refrigeration effect through the stored low-temperature fluid medium.

[0062] In some embodiments, such as Figure 4As shown, the heat exchanger 500 includes a tank 510, which has a collection chamber 511 and a first collection port 512, a second collection port 513, a third collection port 514, and a fourth collection port 515 connected to the collection chamber 511. The two ends of the refrigeration circuit 300 are connected to the first collection port 512 and the second collection port 513, allowing the fluid medium within the refrigeration circuit 300 to circulate within the refrigeration circuit 300 and the collection chamber 511. This allows the cooled low-temperature fluid medium to be partially stored in the collection chamber 511, while another portion of the low-temperature fluid medium can pass through the refrigeration circuit 300 to cool the cooling chamber 110 (e.g., ...). Figure 2 (As shown) Cooling is performed.

[0063] Among them, such as Figure 4 As shown, the magnetic refrigeration refrigerator also includes a collector circuit 600, which is configured to exchange heat with the cold-end collector 440. Both ends of the collector circuit 600 are connected to the third collector port 514 and the fourth collector port 515. This allows the fluid medium to circulate between the collector chamber 511 and the cold-end collector 440 under the drive of the collector pump. The cold-end collector 440 can transfer cooling energy to the collector chamber 511 through the collector circuit 600 to cool the fluid medium flowing into the collector chamber 511 from the refrigeration circuit 300.

[0064] Within the manifold 511, a heat exchange coil can be connected between the third manifold 514 and the fourth manifold 515, allowing the fluid medium to circulate between the heat exchange coil and the manifold loop 600. This enables the low-temperature fluid medium to exchange heat and cool down the fluid medium within the manifold 511 through the heat exchange coil. In other words, the fluid medium in the refrigeration loop 300 and the manifold loop 600 are two independent circulation paths, exchanging heat through the manifold 511.

[0065] Or, such as Figure 4 As shown, the fluid media in the refrigeration circuit 300 and the collector circuit 600 can also be mixed in the collector cavity 511 to maximize the heat exchange efficiency of the fluid media in the two circulation circuits within the collector cavity 511. That is, the fluid media in the collector circuit 600 and the refrigeration circuit 300 are mixed and stored in the collector cavity 511. While ensuring thorough mixing and heat exchange, there is no need for a complex coil structure within the collector cavity 511, resulting in a simple structure that is easy to maintain.

[0066] Inside the manifold 511, the manifold circuit 600 is used to lower the temperature of the fluid medium stored in the manifold 511 to increase the storage capacity of cold energy, while the refrigeration circuit 300 is used to absorb the cold energy of the fluid medium in the manifold 511 to adjust the refrigeration or freezing temperature at the refrigeration chamber 110.

[0067] In some embodiments, such as Figure 4As shown, the heat exchanger 500 also includes at least one baffle plate 520, which is located in the collection cavity 511 and connected to the tank 510 to increase the flow path of the fluid medium in the collection cavity 511.

[0068] For example, the number of baffles 520 can be three. Taking the third collector port 514 and the fourth collector port 515 located on the same side of the collecting cavity 511, and the third collector port 514 and the fourth collector port 515 located between the first collector port 512 and the second collector port 513 as an example, two baffles 520 can be spaced apart on the sides of the third collector port 514 and the fourth collector port 515 that are close to each other, and these two baffles 520 are located on the upper side of the collecting cavity 511. A baffle 520 is then spaced apart from the two baffles on the upper side, and this baffle 520 is located on the lower side of the collecting cavity 511.

[0069] Thus, referring to Figure 4 By setting one or more baffles 520, the flow path of the fluid medium will bend around the baffles 520 during the mixing and flow of the fluid medium in the collection cavity 511, which helps to increase the flow path length of the fluid medium and improve the uniformity of the mixing of the fluid medium in the refrigeration circuit 300 and the collection circuit 600.

[0070] In this design, the fluid medium in the refrigeration circuit 300 is defined as the first fluid, and the fluid medium in the collector circuit 600 is defined as the second fluid. The first fluid and the second fluid can be the same fluid medium so that they can mix in the collector cavity 511. Alternatively, the first fluid and the second fluid can be different fluid media so that they can exchange heat in the collector cavity 511 without mixing.

[0071] For example, the first and second fluids can be media with a freezing point less than -20°C. Examples include YD300-YD-350 series heat transfer oils, ethanol-titanium dioxide (TiO2) nanofluids, ethylene glycol (EG)-based non-aqueous heat transfer fluids, or propylene glycol (PG) aqueous solutions.

[0072] For example, within the manifold 511, the flow direction of the refrigeration circuit 300 between the first manifold 512 and the second manifold 513 is a first direction. The flow direction of the manifold circuit 600 between the third manifold 514 and the fourth manifold 515 is a second direction, with the first and second directions at least partially opposite. This allows the fluid media in the two circuits to have partial or complete reverse flow in the first manifold 511, thereby improving the heat exchange efficiency and / or the uniformity of mixing of the two fluid media.

[0073] In some embodiments, such as Figure 4As shown, the refrigeration circuit 300 includes a refrigeration pump 310, a refrigeration heat exchanger 320, and a refrigeration fan 330. The refrigeration pump 310 is used to drive the low-temperature fluid medium to circulate between the manifold 511 and the refrigeration heat exchanger 320. The refrigeration fan 330 is used to drive air to flow through the refrigeration heat exchanger 320 and to make the air cooled by the refrigeration heat exchanger 320 flow to the cold storage compartment 111 (e.g., Figure 2 (As shown), the freezer compartment 112 and the variable temperature compartment 113 are used to adjust the temperature range of the corresponding freezer compartment 110.

[0074] like Figure 3 As shown, the refrigeration circuit 300 may further include a thermostat 340 and a temperature sensor 350. The temperature sensor 350 is installed in the corresponding refrigeration compartment 110 and is used to collect data from the refrigeration compartment 111 (e.g., the refrigerator compartment 111). Figure 2 The real-time temperatures of the freezer compartment 112 and the variable temperature compartment 113 are shown in the figure. The thermostat 340 is electrically connected to the temperature sensor 350, the refrigeration fan 330 and the refrigeration pump 310 to adjust the airflow and air temperature blown out through the refrigeration heat exchanger 320 by controlling the speed of the refrigeration fan 330 and / or the refrigeration pump 310, thereby adjusting the temperature range of the corresponding freezer compartment 110.

[0075] One refrigeration heat exchanger 320 can be set up to correspond to one or more refrigeration chambers 110, so that the amount of air flowing through the refrigeration chamber 110 can be controlled individually by adjusting the air duct or damper, thereby independently controlling the temperature range of each refrigeration chamber 110.

[0076] In the above embodiment, the refrigeration circuit 300 cools the corresponding refrigeration chamber 110 by means of air cooling.

[0077] In some other embodiments, the refrigeration circuit 300 can also cool the corresponding refrigeration chamber 110 by means of refrigeration.

[0078] For example, the refrigeration circuit 300 includes a refrigeration pump 310 and multiple capillary branches, which are connected in parallel, and each refrigeration compartment 110 is provided with at least one capillary branch. At least the capillary branches of the refrigeration compartment 111 and the variable temperature compartment 113 are equipped with temperature control valves, so that the temperature controller 340 can adjust the flow rate of the fluid medium in the capillary branch of the corresponding refrigeration compartment 110 by adjusting the opening state of the temperature control valves and the speed of the refrigeration pump 310, thereby precisely controlling the temperature range of the corresponding refrigeration compartment 110. This is not limited.

[0079] In some embodiments, such as Figure 5As shown, the magnetic refrigeration assembly 400 includes a bidirectional pump 410, a magnetic refrigerator 420, a hot-end collector 430, a cold-end collector 440, and a drive motor 450. The bidirectional pump 410 includes a pump body 411 and a first liquid port 412 and a second liquid port 413 communicating with the pump body 411. The magnetic refrigerator 420 has a third liquid port 4242 and a fourth liquid port 4243. The two ends of the hot-end collector 430 are connected to the first liquid port 412 and the third liquid port 4242. The two ends of the cold-end collector 440 are connected to the second liquid port 413 and the fourth liquid port 4243. The cold-end collector 440 is connected to the collector heat exchanger 500 (e.g., ...). Figure 4 (As shown) A heat exchange device is used to cool the refrigeration circuit 300. The drive motor 450 is connected to the pump body 411 and the magnetic refrigerator 420 to drive the pump body 411 and the magnetic refrigerator 420 to circulate between the first cycle and the second cycle.

[0080] When the pump body 411 and the magnetic chiller 420 are in the first cycle, the magnetic chiller 420 is in a demagnetized state and absorbs heat, and the pump body 411 drives the fluid medium to flow from the fourth liquid port 4243 to the cold end collector 440.

[0081] When the pump body 411 and the magnetic chiller 420 are in the second cycle, the magnetic chiller 420 is in an excited state and releases heat, and the pump body 411 drives the fluid medium to flow from the third liquid port 4242 to the hot end collector 430.

[0082] by Figure 5 Taking the cold-end collector 440, magnetic chiller 420, and hot-end collector 430 as an example, arranged from left to right: When the pump body 411 and magnetic chiller 420 are in the first cycle, the drive motor 450 drives the magnetic chiller 420 into a demagnetized state to absorb heat, thereby lowering the temperature of the fluid medium inside the magnetic chiller 420. At this time, the drive motor 450 drives the pump body 411 to pump out the fluid medium from the first liquid port 412, and causes the fluid medium inside the magnetic chiller 420 to flow from right to left through the fourth liquid port 4243 to the cold-end collector 440. (Combined with...) Figure 4 At the cold end collector 440, the low-temperature fluid medium flowing out from the magnetic refrigerator 420 can absorb heat from the collector circuit 600 to reduce the temperature of the fluid medium in the collector circuit 600, thereby providing a cold source for maintaining the low temperature state of the refrigeration room.

[0083] Correspondingly, when the pump body 411 and the magnetic chiller 420 are in the second cycle, the drive motor 450 drives the magnetic chiller 420 to be in an excited state to release heat, thereby increasing the temperature of the fluid medium inside the magnetic chiller 420. At this time, the drive motor 450 drives the pump body 411 to pump out the fluid medium from the second liquid port 413, and causes the fluid medium inside the magnetic chiller 420 to flow from left to right through the third liquid port 4242 to the hot end collector 430.

[0084] Among them, the hot end collector 430 can be a finned heat exchanger, so that the high-temperature fluid medium flowing into the hot end collector 430 can be rapidly cooled by exchanging heat with the air through the fins.

[0085] For example, such as Figure 5 As shown, the magnetic refrigeration assembly 400 also includes a porous workpiece 425, which encloses the bidirectional pump 410, the magnetic refrigerator 420, the hot-end collector 430, the cold-end collector 440, and the drive motor 450. The porous workpiece 425 can absorb vibration and noise during the operation of the magnetic refrigeration assembly 400, thereby reducing the vibration and noise of the entire machine. Furthermore, the porous workpiece 425 is in contact with the hot-end collector 430, thereby increasing the heat dissipation area of ​​the hot-end collector 430 and improving the heat dissipation effect. This helps to reduce the temperature of the fluid medium flowing out from the fourth liquid port 4243 in the first cycle, thus improving the cooling efficiency of the magnetic refrigeration assembly 400.

[0086] Based on this, the magnetic refrigeration component 400 of this application can be driven by a single drive motor 450 to simultaneously drive the bidirectional pump 410 and the magnetic refrigerator 420 to cycle and reciprocate between the first and second cycles. Compared with related technologies that use two motors for driving, using only one drive motor 450 simplifies the number of components in the magnetic refrigeration component 400 and helps reduce the overall power consumption of the magnetic refrigeration component 400, thereby improving the efficiency ratio under refrigeration conditions.

[0087] Among them, such as Figure 6 and Figure 7 As shown, the magnetic refrigerator 420 includes a sleeve 421, a magnet 422, a magnetothermal element 423, and a heat collection tube 424. The magnet 422 has a sheet-like structure and is disposed inside the sleeve 421. Along the radial direction of the sleeve 421, the magnetothermal element 423 is disposed inside the magnet 422 away from the sleeve 421. The heat collection tube 424 has a heat collection cavity 4241 and a third liquid port 4242 and a fourth liquid port 4243 communicating with the heat collection cavity 4241. Along the radial direction of the sleeve 421, the heat collection tube 424 is disposed outside or inside the magnetothermal element 423.

[0088] When the magnetic refrigerator 420 is in its first cycle, the magnet 422 and the magnetothermal element 423 rotate relative to each other, causing the radial overlap area of ​​the magnetothermal element 423 and the magnet 422 to decrease. The magnetothermal element 423 is in a demagnetized state and absorbs heat from the heat collection tube 424, thereby lowering the temperature of the fluid medium in the heat collection chamber 4241. During this process, the drive motor 450 drives the pump body 411 to make the fluid medium in the heat collection chamber 4241 flow from the fourth liquid port 4243 to the cold end heat collector 440, so as to provide a cold source to the cooling chamber 110.

[0089] When the magnetic chiller 420 is in its second cycle, the magnet 422 and the magnetothermal element 423 rotate relative to each other, causing the radial overlap area of ​​the magnetothermal element 423 and the magnet 422 to increase. The magnetothermal element 423 is in an energized state and releases heat toward the heat collection tube 424, thereby raising the temperature of the fluid medium in the heat collection chamber 4241. During this process, the drive motor 450 drives the pump body 411 to make the fluid medium in the heat collection chamber 4241 flow from the third liquid port 4242 to the hot end heat collector 430, thus completing one cycle.

[0090] For example, the drive motor 450 may be a stepper motor or a servo motor, which drives the pump body 411 and the magnetic chiller 420 to circulate between the first cycle and the second cycle by switching between forward and reverse rotation.

[0091] In the magnetic refrigerator 420, a drive motor 450 is connected to the magnetothermal element 423 to drive the magnetothermal element 423 to reciprocate, thereby cyclically switching between demagnetization and excitation states. This ensures that the magnetic refrigerator 420 in the demagnetization state stably outputs a low-temperature fluid medium to the cold-end collector 440.

[0092] For example, one or more magnetothermal elements 423 inside the sleeve 421 are connected and fixed by a bracket. Along the axial direction of the sleeve 421, one end of the bracket is provided with a transmission wheel, and the output end of the drive motor 450 is provided with a drive wheel. The drive wheel can be set to mesh with the transmission wheel for transmission, or the drive wheel and the transmission wheel can be set to be transmitted through a synchronous belt or chain, so as to drive the magnetothermal element 423 to reciprocate between the first cycle and the second cycle.

[0093] Alternatively, the magnetothermal element 423 can be fixed by a bracket, and the heat collection tube 424 can also be fixed by a bracket. A drive motor 450 is connected to the sleeve 421 to drive the magnet 422 to rotate back and forth in the first and second cycles, and to make the magnetothermal element 423 cycle between demagnetization and excitation states. This is not limited.

[0094] In some other embodiments, such as Figure 8 As shown, the magnetothermal element 423 can be configured as a sheet structure and disposed inside the sleeve 421. Along the radial direction of the sleeve 421, the magnet 422 is disposed on the inner side of the magnetothermal element 423 away from the sleeve 421, and the heat collection tube 424 is disposed between the magnetothermal element 423 and the magnet 422.

[0095] When the magnetic refrigerator 420 is in its first cycle, the drive motor 450 drives the magnet 422 or the magnetothermal element 423 to rotate, causing relative rotation between the magnet 422 and the magnetothermal element 423. During this process, the radial overlap area of ​​the magnetothermal element 423 and the magnet 422 decreases, the magnetothermal element 423 is demagnetized and absorbs heat from the heat collection tube 424, thereby lowering the temperature of the fluid medium in the heat collection chamber 4241. Furthermore, the drive motor 450 also drives the pump body 411 to cause the fluid medium in the heat collection chamber 4241 to flow from the fourth liquid port 4243 to the cold-end heat collector 440, thus providing a cold source to the cooling chamber 110.

[0096] When the magnetic chiller 420 is in its second cycle, the drive motor 450 drives the magnet 422 or the magnetothermal element 423 to rotate, causing relative rotation between the magnet 422 and the magnetothermal element 423. During this process, the radial overlap area of ​​the magnetothermal element 423 and the magnet 422 increases, the magnetothermal element 423 is in an energized state and releases heat towards the inner heat collection tube 424, thereby raising the temperature of the fluid medium in the heat collection cavity 4241. Furthermore, the drive motor 450 drives the pump body 411 to cause the fluid medium in the heat collection cavity 4241 to flow from the third liquid port 4242 to the hot-end heat collector 430, thus completing one cycle.

[0097] In the above scheme, the drive motor 450 can drive the magnetothermal element 423 to rotate cyclically between the first cycle and the second cycle. Alternatively, the drive motor 450 can also drive the magnet 422 to rotate cyclically between the first cycle and the second cycle; there is no limitation on this.

[0098] In some embodiments, such as Figure 7 and Figure 8 As shown, there are multiple magnets 422, which are spaced apart circumferentially along the sleeve 421. The number of magnetothermal elements 423 is the same as the number of magnets 422, and they are spaced apart axially along the sleeve 421. When the magnetic refrigerator 420 enters... Figure 7 and Figure 8 During the first cycle, the radial overlap area between each magnet 422 and a magnetothermal element 423 is at its maximum. When the magnetic refrigerator 420 enters the second cycle, the radial overlap area between each magnet 422 and a magnetothermal element 423 is at its minimum or there is no overlap.

[0099] Taking a scenario where there are two magnets 422 and two magnetothermal elements 423, the two magnets 422 and the two magnetothermal elements 423 are distributed 180° apart circumferentially. If the central angle between the magnets 422 and the magnetothermal elements 423 is less than or equal to 90°, then in the second period, the magnets 422 and the magnetothermal elements 423 do not overlap radially. If the central angle between the magnets 422 and the magnetothermal elements 423 is greater than 90°, then in the second period, the magnets 422 and the magnetothermal elements 423 have the minimum overlapping area.

[0100] Taking the heat collector tube 424 located at the axis of the sleeve 421 as an example, multiple magnetothermal elements 423 and multiple magnets 422 are arranged so that multiple magnetothermal elements 423 are distributed circumferentially on the outer side of the heat collector tube 424. When the magnetothermal elements 423 are in a demagnetized state, the multiple magnetothermal elements 423 can improve the uniformity of cooling inside the heat collector tube 424, which is beneficial to improving the heat transfer efficiency between the magnetothermal elements 423 and the heat collector tube 424.

[0101] It should be noted that the magnetothermal element 423 is filled with a magnetothermal medium, which can release heat in the energized state to heat the heat collector tube 424. Furthermore, in the demagnetized state, the magnetothermal medium can absorb heat from the heat collector tube 424 to lower its temperature.

[0102] For example, the magnetocaloric medium includes one or more of gadolinium-based compounds, lanthanum-iron-silicon alloys, manganese-based alloys, and anti-perovskites. The phase transition temperature of these magnetocaloric media is in the room temperature range, offering good economic benefits.

[0103] Lanthanum-iron-silicon alloy can be filled within the magnetothermal element 423. This alloy exhibits a high magnetic entropy change and a wide phase transition temperature range. For example, the Curie temperature can be flexibly adjusted within the range of 127K-340K through hydrogenation while maintaining a high magnetic entropy change.

[0104] In some embodiments, such as Figure 2 and Figure 9 As shown, the magnetic refrigeration refrigerator includes a door seal 710 and a piezoelectric layer 720. The door seal 710 is disposed between the door 200 and the cabinet 100 to seal the gap between them. The piezoelectric layer 720 is disposed within the door seal 710. Figure 10 The magnetic refrigeration refrigerator also includes a battery assembly 730, which is electrically connected to a piezoelectric layer 720 and a magnetic refrigeration assembly 400 (such as a drive motor 450). The piezoelectric layer 720 is used to charge the battery assembly 730, and the battery assembly 730 is used to drive the magnetic refrigeration unit 420 to cool the refrigeration circuit 300 (such as a drive motor 450). Figure 3 (As shown).

[0105] like Figure 9 As shown, within the door seal 710, the piezoelectric dielectric layer 720 includes a first buffer layer 721, a first electrode layer 722, a piezoelectric material layer 723, a second electrode layer 724, and a second buffer layer 725 arranged sequentially.

[0106] The first buffer layer 721 and the second buffer layer 725 are used to protect the piezoelectric material from external punctures or abrasion. The first electrode layer 722 and the second electrode layer 724 are electrodes used to collect and transfer electric charge. The first electrode layer 722 and the second electrode layer 724 can be copper electrode layers, aluminum electrode layers, or silver electrode layers, and there is no limitation thereto. The piezoelectric material layer 723 can be a polyvinylidene fluoride film or lead zirconate titanate.

[0107] Based on this, using the piezoelectric effect to generate electricity, a piezoelectric dielectric layer 720 is provided inside the door seal 710 of the door body 200. Due to the characteristic of the piezoelectric dielectric layer 720 to generate charge when subjected to mechanical stress, the pressure generated by the impact when the door body 200 is closed causes the piezoelectric material layer 723 to deform, separating the positive and negative charge centers inside and generating voltage. The charge is collected through the first electrode layer 722 and the second electrode layer 724 to output electrical energy. The first buffer layer 721 and the second buffer layer 725 can quickly recover their shape while dispersing the impact pressure, and the collected electrical energy can charge the battery assembly 730.

[0108] For example, when the battery assembly 730 stores sufficient electrical energy, it can power the magnetic refrigerator 420 for cooling without requiring an external power source. When the battery assembly 730 has 30%-50% of its charge remaining, the magnetic refrigerator is switched to external power, during which time the battery assembly 730 continuously collects and stores electrical energy through the piezoelectric layer 720.

[0109] Thus, by using the piezoelectric dielectric layer 720 and the battery module 730 together, while recovering and storing electrical energy, the dependence on external power consumption can be reduced, resulting in good economic benefits and environmental friendliness.

[0110] The battery assembly 730 can also provide temporary power during external power outages to avoid short-term power outages affecting the low-temperature storage environment of items in the refrigeration chamber 110.

[0111] In some embodiments, the magnetic refrigeration refrigerator also includes a main controller, which is electrically connected to components such as a thermostat, battery pack, and magnetic refrigeration assembly, and is used to control the operating status of the magnetic refrigeration refrigerator. For example, the main controller has a preset program that enables remote temperature control when connected to the network. This allows for adjusting the temperature of the refrigeration compartment at any time and monitoring the battery pack's charge status. The system can also remotely notify the user of any abnormal conditions posed by the magnetic refrigeration refrigerator.

[0112] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “” used herein may also indicate the inclusion of the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0113] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0114] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A magnetic refrigeration refrigerator, characterized in that, include: Refrigeration room (110); A refrigeration circuit (300) is used to cool the refrigeration chamber (110); Magnetic refrigeration assembly (400); The heat exchanger (500) is connected to the refrigeration circuit (300) and the heat exchanger (500) is configured to exchange heat with the refrigeration side of the magnetic refrigeration assembly (400) for cooling the fluid medium flowing through the heat exchanger (500) in the refrigeration circuit (300); the heat exchanger (500) is provided with a collection chamber (511) for storing the fluid medium flowing through the heat exchanger (500).

2. The magnetic refrigeration refrigerator according to claim 1, characterized in that, The magnetic refrigeration assembly (400) includes: A bidirectional pump (410) includes a pump body (411) and a first liquid port (412) and a second liquid port (413) communicating with the pump body (411); A magnetic refrigerator (420) having a third liquid port (4242) and a fourth liquid port (4243); A hot-end collector (430) is connected at both ends to the first liquid port (412) and the third liquid port (4242); A cold-end collector (440) is connected at both ends to the second liquid port (413) and the fourth liquid port (4243). The cold-end collector (440) is configured to exchange heat with the collector heat exchanger (500) and is used to cool the refrigeration circuit (300). And a drive motor (450), which is connected to the pump body (411) and the magnetic refrigerator (420) to drive the pump body (411) and the magnetic refrigerator (420) to circulate between the first cycle and the second cycle; When the pump body (411) and the magnetic refrigerator (420) are in the first cycle, the magnetic refrigerator (420) is in a demagnetized state and absorbs heat, and the pump body (411) drives the fluid medium to flow from the fourth liquid port (4243) to the cold end collector (440). When the pump body (411) and the magnetic refrigerator (420) are in the second cycle, the magnetic refrigerator (420) is in an excited state and releases heat, and the pump body (411) drives the fluid medium to flow from the third liquid port (4242) to the hot end collector (430).

3. The magnetic refrigeration refrigerator according to claim 2, characterized in that, The magnetic refrigerator (420) includes: Sleeve (421); A magnet (422), which has a sheet-like structure and is disposed on the inner side of the sleeve (421); A magnetothermal element (423) is disposed on the inner side of the magnet (422) away from the sleeve (421) along the radial direction of the sleeve (421); And a heat collection tube (424), the heat collection tube (424) is provided with a heat collection cavity (4241) and a third liquid port (4242) and a fourth liquid port (4243) communicating with the heat collection cavity (4241); along the radial direction of the sleeve (421), the heat collection tube (424) is disposed on the outside or inside of the magnetothermal element (423); When the magnetic refrigerator (420) is in the first cycle, the magnet (422) and the magnetothermal element (423) rotate relative to each other so that the radial overlap area of ​​the magnetothermal element (423) and the magnet (422) decreases, the magnetothermal element (423) is in a demagnetized state and absorbs the heat from the heat collection tube (424); When the magnetic refrigerator (420) is in the second cycle, the magnet (422) and the magnetothermal element (423) rotate relative to each other so that the radial overlap area of ​​the magnetothermal element (423) and the magnet (422) increases. The magnetothermal element (423) is in an excited state and releases heat toward the heat collection tube (424).

4. The magnetic refrigeration refrigerator according to claim 2, characterized in that, The magnetic refrigerator (420) includes: Sleeve (421); A magnetothermal element (423) is a sheet-like structure and is disposed on the inner side of the sleeve (421); A magnet (422) is disposed on the inner side of the magnetothermal element (423) away from the sleeve (421) along the radial direction of the sleeve (421); And a heat collection tube (424), the heat collection tube (424) having a heat collection cavity (4241) and a third liquid port (4242) and a fourth liquid port (4243) communicating with the heat collection cavity (4241); along the radial direction of the sleeve (421), the heat collection tube (424) is disposed between the magnetothermal element (423) and the magnet (422); When the magnetic refrigerator (420) is in the first cycle, the magnet (422) and the magnetothermal element (423) rotate relative to each other so that the radial overlap area of ​​the magnetothermal element (423) and the magnet (422) decreases, and the magnetothermal element (423) is in a demagnetized state and absorbs heat. When the magnetic refrigerator (420) is in the second cycle, the magnet (422) and the magnetothermal element (423) rotate relative to each other so that the radial overlap area of ​​the magnetothermal element (423) and the magnet (422) increases, and the magnetothermal element (423) is in an excited state and releases heat.

5. The magnetic refrigeration refrigerator according to claim 3 or 4, characterized in that, The drive motor (450) is connected to the magnetothermal element (423) to drive the magnetothermal element (423) to rotate cyclically between the demagnetization state and the excitation state; Alternatively, the drive motor (450) is connected to the magnet (422) to drive the magnet (422) to rotate cyclically between the first cycle and the second cycle.

6. The magnetic refrigeration refrigerator according to claim 3 or 4, characterized in that, The number of magnets (422) is multiple, and the multiple magnets (422) are distributed at intervals along the circumference of the sleeve (421); The number of the magnetothermal elements (423) is the same as the number of the magnets (422), and the plurality of magnetothermal elements (423) are distributed at intervals along the axial direction of the sleeve (421); When the magnetic refrigerator (420) enters the first cycle, the radial overlap area between each magnet (422) and one of the magnetothermal elements (423) is at its maximum. When the magnetic refrigerator (420) enters the second cycle, the radial overlap area between each magnet (422) and one of the magnetothermal elements (423) is minimal or non-overlapping.

7. The magnetic refrigeration refrigerator according to claim 3 or 4, characterized in that, The magnetocaloric element (423) is filled with a magnetocaloric medium, which releases heat in the energized state and absorbs heat in the demagnetized state; and / or, The magnetocaloric element (423) is filled with lanthanum-iron-silicon alloy.

8. The magnetic refrigeration refrigerator according to any one of claims 2-4, characterized in that, The magnetic refrigeration assembly (400) further includes: A porous workpiece (425) covers the bidirectional pump (410), the magnetic refrigerator (420), the hot-end collector (430), the cold-end collector (440), and the drive motor (450), and the porous workpiece (425) is in contact with the hot-end collector (430).

9. The magnetic refrigeration refrigerator according to any one of claims 2-4, characterized in that, The heat exchanger (500) includes a tank (510), which is provided with the collection cavity (511) and a first collection port (512), a second collection port (513), a third collection port (514) and a fourth collection port (515) connected to the collection cavity (511). The two ends of the refrigeration circuit (300) are connected to the first collector port (512) and the second collector port (513); The magnetic refrigeration refrigerator also includes a heat exchange circuit (600), which is configured to exchange heat with the cold end heat collector (440), and the two ends of the heat exchange circuit (600) are connected to the third heat exchange port (514) and the fourth heat exchange port (515); The fluid media of the collection circuit (600) and the cooling circuit (300) are mixed and stored in the collection cavity (511).

10. The magnetic refrigeration refrigerator according to claim 9, characterized in that, The heat exchanger (500) further includes at least one baffle (520) located within the collection chamber (511) and connected to the tank (510) to increase the flow path of the fluid medium within the collection chamber (511); and / or, Within the collection chamber (511), the flow direction of the refrigeration circuit (300) between the first collection port (512) and the second collection port (513) is a first direction, and the flow direction of the collection circuit (600) between the third collection port (514) and the fourth collection port (515) is a second direction. The first direction and the second direction are at least partially opposite.

11. The magnetic refrigeration refrigerator according to any one of claims 1-4, characterized in that, The magnetic refrigeration refrigerator includes: The enclosure (100) has one or more refrigeration compartments (110) inside; A door (200) is hinged to the housing (100) and is used to open or close the refrigeration compartment (110); A door seal (710) is disposed between the door body (200) and the box body (100) to seal the gap between the door body (200) and the box body (100); A piezoelectric dielectric layer (720) is disposed within the door seal (710); And a battery assembly (730), which is electrically connected to the piezoelectric dielectric layer (720) and the magnetic refrigeration assembly (400), wherein the piezoelectric dielectric layer (720) is used to charge the battery assembly (730), and the battery assembly (730) is used to drive the magnetic refrigeration assembly (400) to cool the refrigeration circuit (300).

Images