Electromagnetic oven refrigerating system and electromagnetic oven

Abstract

The invention belongs to the technical field of household appliances, and discloses an induction cooker refrigerating system and an induction cooker. The induction cooker refrigerating system comprises a power supply circuit, a control unit, an electromagnetic refrigerating device and a switch control circuit; the power supply circuit is used for supplying power to the control unit, the electromagnetic refrigeration device and the switch control circuit; the electromagnetic refrigeration device comprises a magnetic material part, a heat dissipation device and an electromagnetic module, the electromagnetic module is used for generating magnetic fields which are alternately connected and disconnected, so that the magnetic material part generates a magnetothermal effect to alternately release heat and absorb heat, and the heat dissipation device is used for dissipating heat of the magnetic material part when the magnetic material part releases heat. The magnetic material part is used for absorbing heat of the kitchen ware during heat absorption; the control unit is electrically connected with the electromagnetic refrigeration device, and controls the electromagnetic module to generate alternately on-off magnetic fields through the switch control circuit; therefore, the kitchen ware can be effectively cooled.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to an induction cooker refrigeration system and an induction cooker. Background Art

[0002] Induction cookers, also known as electromagnetic stoves, are widely used in modern kitchens because of their high efficiency, safety and cleanliness.

[0003] However, the design of traditional induction cookers mainly focuses on the heating function, using the heat generated quickly by electromagnetic action for heat utilization. This single-function design may not meet the diverse needs of users in some cases. Especially in daily life, we often encounter situations where we need to cool down hot food.

[0004] For example, after cooking porridge, soup or noodles, the temperature of these foods is usually too high to be eaten immediately. In order to avoid scalding the mouth, the food usually needs to be left for a while to cool naturally to a suitable eating temperature. This cooling process often takes a long time, which not only affects the efficiency of eating, but may also cause changes in the taste of the food.

[0005] In addition, in some cooking techniques, rapid cooling of ingredients is also an important step. For example, when making certain desserts or salads, the cooked ingredients may need to be cooled quickly to maintain their taste and nutrition. Traditional induction cookers cannot meet this rapid cooling requirement, and users often need to use other cooling equipment or methods, which increases the complexity and time cost of cooking.

[0006] Therefore, it is of great practical significance to develop an induction cooker system that can cool kitchenware. This system can not only shorten the cooling time of food and improve dining efficiency, but also provide users with more flexible temperature control options to meet different cooking needs. At the same time, it can also improve the functional diversity of induction cookers and enhance the market competitiveness of products.

[0007] In view of the above problems, the existing technology needs to be improved urgently. Summary of the invention

[0008] The purpose of the present application is to provide an induction cooker refrigeration system and an induction cooker, which can effectively cool kitchen utensils.

[0009] In a first aspect, the present application provides an electromagnetic cooker refrigeration system for cooling kitchenware, comprising a power supply circuit, a control unit, an electromagnetic refrigeration device and a switch control circuit; The power supply circuit is used to supply power to the control unit, the electromagnetic refrigeration device and the switch control circuit; The electromagnetic refrigeration device comprises a magnetic material, a heat dissipation device and an electromagnetic module, wherein the electromagnetic module is used to generate an alternately on-off magnetic field so that the magnetic material generates a magnetocaloric effect and alternately releases and absorbs heat, the heat dissipation device is used to dissipate heat from the magnetic material when the magnetic material releases heat, and the magnetic material absorbs heat from the kitchenware when the magnetic material absorbs heat; The control unit is electrically connected to the electromagnetic refrigeration device, and controls the electromagnetic module to generate an alternately on-off magnetic field through the switch control circuit.

[0010] The induction cooker refrigeration system uses an electromagnetic refrigeration device to cool the kitchen utensils, thereby cooling the food in the kitchen utensils, solving the problem that traditional induction cookers cannot quickly cool food. It has the advantages of shortening food cooling time, improving dining efficiency, providing more flexible temperature control options, and meeting different cooking needs.

[0011] Preferably, the electromagnetic module comprises an S magnetic pole and an N magnetic pole arranged opposite to each other on both sides of the magnetic material piece, and when the electromagnetic module is powered on, a magnetic field passing through the magnetic material piece is generated between the S magnetic pole and the N magnetic pole.

[0012] This structural design enables a magnetic field to be generated between the S pole and the N pole when the electromagnetic module is powered on, passing through the magnetic material. In this way, a magnetic field can be effectively applied to the magnetic material, thereby generating a magnetocaloric effect.

[0013] Preferably, a first heat-insulating net is arranged on the upper side of the magnetic material piece, the heat dissipation device is arranged on one side of the magnetic material piece other than the upper side, and a second heat-insulating net is arranged between the heat dissipation device and the magnetic material piece; the first heat-insulating net and the second heat-insulating net both have a plurality of mesh holes, and the mesh holes can be closed and opened; the first heat-insulating net is used to contact with kitchen utensils; The mesh holes of the first thermal insulation net are closed when the magnetic material part releases heat, and are opened when the magnetic material part absorbs heat; the mesh holes of the second thermal insulation net are opened when the magnetic material part releases heat, and are closed when the magnetic material part absorbs heat.

[0014] This design not only improves the refrigeration efficiency, but also avoids the transfer of heat at inappropriate times, thereby solving the problem of heat exchange control between magnetic materials and kitchen utensils and heat dissipation devices in the induction cooker refrigeration system.

[0015] Preferably, the first thermal insulation net and the second thermal insulation net each include a fixed net layer with a first mesh hole, a movable net layer with a second mesh hole, and a driving device; the fixed net layer and the movable net layer are stacked, and the movable net layer can move relative to the fixed net layer; the driving device is used to drive the movable net layer to move back and forth relative to the fixed net layer, so that the second mesh hole is aligned with the first mesh hole to achieve the opening of the mesh hole, or the second mesh hole is misaligned with the first mesh hole to achieve the closing of the mesh hole.

[0016] Preferably, the electromagnetic refrigeration device also includes a heat-insulating shell, the magnetic material part, the heat dissipation device, the electromagnetic module and the second heat-insulating net are all arranged in the heat-insulating shell, the heat-insulating shell is provided with a heat absorption opening and a heat dissipation opening, the first heat-insulating net is arranged at the heat absorption opening, and the heat dissipation device dissipates heat through the heat dissipation opening.

[0017] Preferably, the switch control circuit includes a switch tube and a switch tube driving circuit; the switch tube, the electromagnetic refrigeration device and the power supply circuit are connected to form a magnetic field control loop; the switch tube driving circuit is connected to the control unit, the power supply circuit and the gate of the switch tube, the control unit is used to send a switch control signal to the switch tube driving circuit, and the switch tube driving circuit is used to control the on and off of the switch tube according to the switch control signal.

[0018] Preferably, the power supply circuit includes an AC / DC module, a DC / DC module and a rectifier bridge; the switch tube, the electromagnetic refrigeration device and the rectifier bridge are connected to form the magnetic field control loop, and the rectifier bridge is used to convert the AC power into DC power; the DC / DC module and the switch tube drive circuit are both electrically connected to the AC / DC module, and the DC / DC module is also electrically connected to the control unit; the AC / DC module is used to convert the AC power into DC power and supply it to the DC / DC module and the switch tube drive circuit; the DC / DC module is used to regulate the DC power provided by the AC / DC module and then supply power to the control unit.

[0019] Preferably, the induction cooker refrigeration system further includes a temperature sensor group, which is electrically connected to the control unit and is used to detect the temperature of the kitchenware, the magnetic material part and the heat exhaust opening. The control unit is used to compare the temperatures of the kitchenware, the magnetic material part and the heat exhaust opening to control the on and off of the magnetic field and the opening and closing of the meshes of the first heat insulation net and the second heat insulation net.

[0020] In a second aspect, the present application provides an induction cooker, comprising the induction cooker refrigeration system described above.

[0021] Preferably, the induction cooker further comprises a heating system, and the heating system is used to heat the kitchenware.

[0022] Beneficial effects: The induction cooker refrigeration system and induction cooker provided in the present application utilize an electromagnetic refrigeration device to cool kitchen utensils, thereby realizing the cooling of food in the kitchen utensils, solving the problem that traditional induction cookers cannot quickly cool food, and have the advantages of shortening food cooling time, improving dining efficiency, providing more flexible temperature control options, and meeting different cooking needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of an induction cooker refrigeration system provided in an embodiment of the present application.

[0024] Figure 2 Schematic diagram of the structure of the electromagnetic refrigeration device.

[0025] Figure 3 It is a schematic diagram of the structure of the first thermal insulation net and the second thermal insulation net.

[0026] Explanation of reference numerals: 1. power supply circuit; 101. AC / DC module; 102. DC / DC module; 103. rectifier bridge; 2. control unit; 3. electromagnetic refrigeration device; 301. magnetic material part; 302. heat dissipation device; 303. electromagnetic module; 304. first thermal insulation net; 305. second thermal insulation net; 306. mesh; 307. fixed mesh layer; 3071. first mesh; 308. movable mesh layer; 3081. second mesh; 309. driving device; 310. thermal insulation shell; 311. heat absorption opening; 312. heat dissipation opening; 4. switch control circuit; 401. switch tube; 402. switch tube driving circuit; 5. filter circuit; 6. temperature sensor group; 7. display panel; 8. cooling fan; 9. buzzer. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0028] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] Traditional induction cookers only have a heating function and cannot meet the user's need to quickly cool down hot food. In actual use, freshly cooked porridge, soup, noodles and other foods often need to be left to cool to a suitable temperature before eating to avoid scalding the mouth. This cooling process usually takes a long time, affecting the user's dining experience and efficiency. Therefore, the present application aims to solve the technical problem of cooling kitchen utensils with an induction cooker to meet the user's need to quickly cool down food.

[0030] If the technical problem of cooling kitchen utensils by induction cookers cannot be effectively solved, a series of negative effects will be brought about. First, the user's dining experience will be significantly affected, which may lead to long waiting times or burns to the mouth when eating. Secondly, the quality of food may decline due to long-term cooling, such as loss of nutrients and deterioration of taste. In addition, the lack of the ability to accurately control the cooling process also limits the application of induction cookers in certain special cooking techniques, such as temperature-sensitive molecular cuisine. Therefore, the development of an induction cooker refrigeration system that can actively, quickly and evenly cool kitchen utensils has important technical significance and practical application value.

[0031] To do this, please refer to Figure 1-Figure 3 , the present application provides an electromagnetic cooker refrigeration system for cooling kitchenware, comprising a power supply circuit 1, a control unit 2, an electromagnetic refrigeration device 3 and a switch control circuit 4; The power supply circuit 1 is used to supply power to the control unit 2, the electromagnetic refrigeration device 3 and the switch control circuit 4; The electromagnetic refrigeration device 3 includes a magnetic material part 301, a heat dissipation device 302 and an electromagnetic module 303. The electromagnetic module 303 is used to generate an alternately on-off magnetic field so that the magnetic material part 301 generates a magnetocaloric effect and alternately releases and absorbs heat. The heat dissipation device 302 is used to dissipate heat from the magnetic material part 301 when the magnetic material part 301 releases heat, and the magnetic material part 301 is used to absorb heat from the kitchenware when absorbing heat. The control unit 2 is electrically connected to the electromagnetic refrigeration device 3 and controls the electromagnetic module 303 to generate an alternately on-off magnetic field through the switch control circuit 4 .

[0032] The induction cooker refrigeration system utilizes the electromagnetic refrigeration device 3 to cool the kitchenware, thereby realizing the cooling of the food in the kitchenware, solving the problem that the traditional induction cooker cannot cool the food quickly, and has the advantages of shortening the food cooling time, improving the dining efficiency, providing more flexible temperature control options, and meeting different cooking needs.

[0033] The control unit 2 is a core component responsible for controlling the entire refrigeration process, and can be implemented by a microcontroller or a digital signal processor, for example, a single chip microcomputer or an MCU, but not limited thereto.

[0034] The present application realizes the active cooling function of the induction cooker on the kitchenware by designing an electromagnetic refrigeration device 3 including an electromagnetic module 303, a magnetic material part 301 and a heat dissipation device 302. This design not only expands the function of the induction cooker, but also improves the convenience and safety of the user in using the induction cooker.

[0035] The working process of the system is as follows: the control unit 2 first receives the cooling instruction, and then controls the electromagnetic module 303 to generate an alternating on-off magnetic field through the switch control circuit 4. When the electromagnetic module 303 is powered on, a magnetic field is generated, and under the action of the magnetic field, the magnetic moment order of the magnetic material 301 increases, so that the temperature rises, and the heat is released to a place far away from the kitchenware through the heat dissipation device 302; when the electromagnetic module 303 is powered off, the magnetic field disappears quickly, the magnetic moment order of the magnetic material 301 decreases, so that the temperature drops, and heat is absorbed from the kitchenware to achieve cooling; this cycle achieves a continuous cooling effect.

[0036] Specifically, the electromagnetic module 303 includes an S magnetic pole and an N magnetic pole which are arranged opposite to each other on both sides of the magnetic material piece 301 . When the electromagnetic module 303 is powered on, a magnetic field passing through the magnetic material piece 301 is generated between the S magnetic pole and the N magnetic pole.

[0037] This structural design enables a magnetic field (e.g. Figure 2 In the figure, S represents the S pole and N represents the N pole). In this way, a magnetic field can be effectively applied to the magnetic material piece 301, so that it produces a magnetocaloric effect. By controlling the power on and off of the electromagnetic module 303, the magnetic field can be alternately turned on and off, so that the magnetic material piece 301 alternately releases heat and absorbs heat. This design can not only effectively realize the generation and control of the magnetic field, but also ensure that the magnetic field can fully act on the magnetic material piece 301, thereby improving the cooling efficiency of the system.

[0038] Furthermore, the S pole and N pole of the electromagnetic module 303 can be implemented in various forms. For example, an electromagnet can be used. Another way is to use a permanent magnet to change the relative position of the magnetic poles by mechanical rotation. Both methods have their own advantages. The control of the electromagnet is more flexible, while the permanent magnet has the characteristics of low energy consumption and high stability.

[0039] Preferably, the electromagnetic module 303 uses an electromagnet. The electromagnetic module 303 may be composed of two groups of electromagnets, each group of electromagnets including two electromagnets with opposite poles arranged on both sides of the magnetic material piece 301; the electromagnetic module 303 may also be composed of at least one electromagnet with a U-shaped iron core (such as Figure 2 As shown), the U-shaped iron core of this electromagnet half-encloses a receiving cavity, the S magnetic pole and the N magnetic pole of the electromagnet are respectively located on opposite sides of the receiving cavity, and the magnetic material piece 301 is arranged in the receiving cavity.

[0040] The material of the magnetic material part 301 can be selected from materials with high magnetocaloric effect, such as alloys of rare earth elements such as gadolinium, lanthanum, and iron, which can produce significant temperature changes under the action of an alternating magnetic field, thereby improving the refrigeration efficiency of the system. Preferably, high-entropy alloys (HEA) materials and neodymium iron boron magnetic materials can be selected, which can produce significant temperature changes under the action of an alternating magnetic field, thereby improving the refrigeration efficiency of the system, and have low cost.

[0041] In some preferred embodiments, see Figure 2 and Figure 3 A first heat insulation net 304 is disposed on the upper side of the magnetic material piece 301, and a heat dissipation device 302 is disposed on one side of the magnetic material piece 301 other than the upper side (eg Figure 2 In the embodiment, the heat dissipation device 302 is arranged on the lower side of the magnetic material piece 301, but is not limited thereto, and can also be arranged on the front side, the rear side, the left side, the right side or other directions, for example), a second heat insulation net 305 is arranged between the heat dissipation device 302 and the magnetic material piece 301; the first heat insulation net 304 and the second heat insulation net 305 both have a plurality of mesh holes 306, and the mesh holes 306 can be closed and opened; the first heat insulation net 304 is used to contact with the kitchenware (for example, in actual use, the first heat insulation net 304 is arranged horizontally upward, and the kitchenware is supported by the first heat insulation net 304; but is not limited thereto); The mesh 306 of the first heat insulation net 304 is closed when the magnetic material part 301 releases heat, and is opened when the magnetic material part 301 absorbs heat; the mesh 306 of the second heat insulation net 305 is opened when the magnetic material part 301 releases heat, and is closed when the magnetic material part 301 absorbs heat.

[0042] It should be noted that the up and down directions here are based on Figure 2The description of the placement direction in the figure does not limit the orientation in actual application.

[0043] By setting a controllable heat insulation net on both sides of the magnetic material 301, precise control of heat transfer is achieved. When the magnetic material 301 is in a heat absorption state, the first heat insulation net 304 is opened to allow the heat in the kitchenware to be absorbed; at the same time, the second heat insulation net 305 is closed to prevent the heat from flowing back to the heat dissipation device 302. When the magnetic material 301 is in a heat release state, the first heat insulation net 304 is closed to prevent the heat from being transferred back to the kitchenware; at the same time, the second heat insulation net 305 is opened to allow the heat to be dissipated by the heat dissipation device 302. This design not only improves the refrigeration efficiency, but also avoids the heat transfer at an inappropriate time, thereby solving the problem of heat exchange control between the magnetic material 301 and the kitchenware and the heat dissipation device 302 in the induction cooker refrigeration system.

[0044] The first heat-insulating net 304 and the second heat-insulating net 305 can be made of thermosensitive materials to automatically open and close the meshes 306 at different temperatures, or a mechanical control method can be adopted, where the main body drives the meshes 306 to open and close.

[0045] For example, in some possible implementations, see Figure 3 The first heat insulation net 304 and the second heat insulation net 305 both include a fixed net layer 307 with a first mesh 3071, a movable net layer 308 with a second mesh 3081, and a driving device 309; the fixed net layer 307 and the movable net layer 308 are stacked, and the movable net layer 308 can move relative to the fixed net layer 307; the driving device 309 is used to drive the movable net layer 308 to move back and forth relative to the fixed net layer 307, so that the second mesh 3081 and the first mesh 3071 are aligned to achieve the opening of the mesh 306, or the second mesh 3081 and the first mesh 3071 are misaligned to achieve the closing of the mesh 306.

[0046] When heat insulation is required, the second mesh 3081 is misaligned with the first mesh 3071 to form a closed state; when heat transfer is required, the second mesh 3081 is aligned with the first mesh 3071 to form an open state. This mechanism can effectively control the heat transfer between the magnetic material 301 and the kitchenware, and between the magnetic material 301 and the heat dissipation device 302, thereby achieving precise cooling control of the kitchenware.

[0047] This technical solution achieves the opening and closing control of the insulation mesh through a simple and ingenious mechanical structure, avoiding complex electronic control systems and improving the reliability and durability of the system. At the same time, this design also makes the control of heat transfer more precise and flexible, and can be adjusted according to different cooling needs, improving the efficiency and practicality of the induction cooker refrigeration system.

[0048] Among them, at least one of the fixed mesh layer 307 and the movable mesh layer 308 is made of a heat-insulating material (such as plastic, ceramic material, etc.). For the first heat-insulating mesh 304, its mesh layer away from the magnetic material piece 301 can be made of a metal material (in this case, the other mesh layer is made of a heat-insulating material). On the one hand, it can more effectively exchange heat with the kitchenware and absorb heat from the kitchenware more efficiently when absorbing heat. On the other hand, it can provide a stronger structural strength, thereby more effectively supporting the kitchenware. For the second heat-insulating mesh 305, its mesh layer close to the magnetic material piece 301 can be made of a metal material (in this case, the other mesh layer is made of a heat-insulating material). On the one hand, it can more effectively exchange heat with the magnetic material piece 301 and absorb heat from the magnetic material piece 301 more efficiently when releasing heat and dissipate heat through the heat dissipation device 302. On the other hand, it can provide a stronger structural strength.

[0049] The sliding connection structure between the mobile mesh layer 308 and the fixed mesh layer 307 can be implemented in a variety of ways. Figure 3 In the embodiment, the fixed mesh layer 307 is provided with slide grooves on the opposite sides of the edges, and the opposite sides of the movable mesh layer 308 extend into the corresponding slide grooves respectively, so that the movable mesh layer 308 can move along the extension direction of the slide grooves; but it is not limited thereto.

[0050] The driving device 309 may be in various forms, such as a piezoelectric material driving device, a motor driving device, a hydraulic driving device or a pneumatic driving device.

[0051] The design of the mesh 306 can also be optimized according to actual needs. For example, meshes 306 of different shapes such as round, square or hexagonal can be used to meet different heat transfer requirements. The size and distribution density of the mesh 306 can also be adjusted according to specific application scenarios to achieve the best heat control effect.

[0052] The heat dissipation device 302 may be in various forms, such as at least one of a heat sink, a heat pipe, a fan heat sink, etc. Figure 2 In the embodiment, the heat dissipation device 302 includes a fan heat sink.

[0053] In some preferred embodiments, see Figure 2 The electromagnetic refrigeration device 3 also includes an insulating shell 310, and the magnetic material part 301, the heat dissipation device 302, the electromagnetic module 303 and the second heat insulation net 305 are all arranged in the insulating shell 310. The insulating shell 310 is provided with a heat absorption opening 311 and a heat discharge opening 312. The first heat insulation net 304 is arranged at the heat absorption opening 311, and the heat dissipation device 302 discharges heat through the heat discharge opening 312.

[0054] The heat-insulating shell 310 serves as an overall package and heat-insulating device. The magnetic material part 301, the heat dissipation device 302, the electromagnetic module 303 and the second heat-insulating net 305 are all arranged inside it, which helps to improve the cooling efficiency (when absorbing heat, more heat is absorbed from the heat absorption opening 311, thereby concentrating on absorbing heat from the kitchen utensils, and when dissipating heat, it is mainly discharged from the heat discharge opening 312, more effectively avoiding the heat from flowing back to the kitchen utensils) and the integrity of the system.

[0055] The arrangement of the heat absorbing opening 311 and the heat dissipating opening 312 realizes the directional flow of heat. The first heat insulating net 304 is arranged at the heat absorbing opening 311, which can control the heat exchange between the kitchenware and the magnetic material part 301. The heat dissipating device 302 dissipates heat through the heat dissipating opening 312, ensuring that the heat can be effectively discharged from the system.

[0056] Specifically, the heat insulating shell 310 can be made of a variety of materials, such as polyurethane foam, glass fiber or other materials with good heat insulating properties. The thickness of the heat insulating shell 310 can be adjusted according to actual needs. This design can effectively isolate the interference of external heat, thereby improving the energy efficiency of the entire system.

[0057] In some embodiments, see Figure 1 The switch control circuit 4 includes a switch tube 401 and a switch tube driving circuit 402; the switch tube 401, the electromagnetic refrigeration device 3 and the power supply circuit 1 are connected to form a magnetic field control loop; the switch tube driving circuit 402 is connected to the control unit 2, the power supply circuit 1 and the gate of the switch tube 401, the control unit 2 is used to send a switch control signal to the switch tube driving circuit 402, and the switch tube driving circuit 402 is used to control the on and off of the switch tube 401 according to the switch control signal (thereby controlling the on and off of the current of the electromagnetic module 303 to realize the on and off of the magnetic field).

[0058] The switch tube 401 and the switch tube driving circuit 402 in the switch control circuit 4 are key components for realizing accurate control of the electromagnetic module 303. The switch tube 401 forms a magnetic field control loop with the electromagnetic refrigeration device 3 and the power supply circuit 1, and controls the working state of the electromagnetic module 303 by controlling the on and off of the switch tube 401. The switch tube driving circuit 402 serves as an interface between the control unit 2 and the switch tube 401, receives the switch control signal sent by the control unit 2, and converts it into a signal suitable for controlling the gate of the switch tube 401.

[0059] This design realizes precise control of the electromagnetic module 303 through the coordinated work of the control unit 2, the switch tube driving circuit 402 and the switch tube 401. The control unit 2 can generate switch control signals of different frequencies and duty cycles as needed, and the switch tube driving circuit 402 converts these signals into signals that can drive the gate of the switch tube 401 to open and close, thereby controlling the on and off of the switch tube 401. This method can flexibly adjust the on and off frequency and duration of the magnetic field, thereby accurately controlling the magnetocaloric effect of the magnetic material part 301 and realizing effective cooling of the kitchenware.

[0060] The switch tube 401 may be a variety of semiconductor switch devices, such as a MOS tube or an IGBT tube, etc. The switch tube drive circuit 402 may be an existing dedicated drive chip or a drive circuit composed of discrete components. For example, an optocoupler-isolated drive circuit may be used to improve the anti-interference capability of the system.

[0061] To ensure that the electromagnetic module 303 can generate a stable alternating magnetic field and reduce electromagnetic interference, a filter circuit 5 can be added to the magnetic field control loop, such as Figure 1 The filter circuit 5 can adopt the existing technology, which will not be described in detail here.

[0062] Further, see Figure 1 The power supply circuit 1 includes an AC / DC module 101, a DC / DC module 102 and a rectifier bridge 103; the switch tube 401, the electromagnetic refrigeration device 3 and the rectifier bridge 103 (which may also include a filter circuit 5) are connected to form a magnetic field control loop, and the rectifier bridge 103 is used to convert the AC power into DC power; the DC / DC module 102 and the switch tube drive circuit 402 are both electrically connected to the AC / DC module 101, and the DC / DC module 102 is also electrically connected to the control unit 2; the AC / DC module 101 is used to convert the AC power into DC power and supply it to the DC / DC module 102 and the switch tube drive circuit 402; the DC / DC module 102 is used to regulate the DC power provided by the AC / DC module 101 and then supply power to the control unit 2.

[0063] This power circuit design solves the different power requirements of different components in the induction cooker refrigeration system. The AC / DC module 101 and the rectifier bridge 103 provide direct current to different components respectively, while the DC / DC module 102 ensures that the control unit 2 obtains the appropriate voltage by voltage regulation. This design realizes the effective power supply to each component and ensures the normal operation of the induction cooker refrigeration system.

[0064] In some embodiments, the control unit 2 can control the on and off of the magnetic field through a switch control signal (such as a PWM signal) with a fixed duty cycle, and correspondingly control the opening and closing of the meshes 306 of the first thermal insulation net 304 and the second thermal insulation net 305 .

[0065] In other embodiments, see Figure 1 The induction cooker refrigeration system also includes a temperature sensor group 6, which is electrically connected to the control unit 2 and is used to detect the temperatures of the kitchenware, the magnetic material part 301 and the heat exhaust opening 312 (therefore, the temperature sensor group 6 includes at least one temperature sensor arranged at the first heat insulation net 304, at least one temperature sensor arranged at the magnetic material part 301 and at least one temperature sensor arranged at the heat exhaust opening 312). The control unit 2 is used to compare the temperatures of the kitchenware, the magnetic material part 301 and the heat exhaust opening 312 to control the on and off of the magnetic field and the opening and closing of the meshes 306 of the first heat insulation net 304 and the second heat insulation net 305.

[0066] Specifically, when the magnetic material piece 301 enters the heat release stage, the magnetic field is turned on, the mesh 306 of the first heat insulation net 304 is closed, and the mesh 306 of the second heat insulation net 305 is opened (the heat dissipation device 302 can continue to operate or be turned on at this time), and the temperature T2 of the magnetic material piece 301 and the temperature T3 at the heat exhaust opening 312 are compared. When T2 drops to T3 or approaches T3 (that is, T2 drops to T3+△T, △T is a preset deviation threshold), it enters the heat absorption stage, thereby closing the mesh 306 of the second heat insulation net 305, opening the mesh 306 of the first heat insulation net 304, disconnecting the magnetic field, and comparing the temperature T1 of the kitchenware and the temperature T2 of the magnetic material piece 301. When T2 rises to T1 or approaches T1 (that is, T2 rises to T1-△T), or when the duration of the current heat absorption stage reaches a preset time threshold (which can be set according to actual needs), it enters the heat release stage (repeating the above-mentioned heat release stage operation); and the cycle is repeated.

[0067] This technical solution solves the problem of accurately controlling the on and off of the magnetic field and the opening and closing of the insulation mesh by introducing the temperature comparison function of the temperature sensor group 6 and the control unit 2. By detecting the temperature of the kitchenware, the magnetic material part 301 and the heat exhaust opening 312, the control unit 2 can grasp the working status of the refrigeration system in real time and decide when to switch between heat absorption and heat release according to the temperature difference. Compared with the switch control at fixed time intervals, this control method based on actual temperature data can manage the refrigeration process more accurately and improve the energy efficiency and refrigeration effect of the system.

[0068] The temperature sensor may be a common temperature detection element such as a thermocouple, a thermistor or an infrared temperature sensor.

[0069] In some embodiments, see Figure 1The electromagnetic cooker refrigeration system also includes a display panel 7, which is electrically connected to the DC / DC module 102 and the control unit 2. The DC / DC module 102 is also used to supply power to the display panel 7. The display panel 7 is used to set the target temperature (and can also be used to display the real-time temperature of the kitchenware). Therefore, in the actual working process, when it is detected that the temperature of the kitchenware reaches the target temperature, the control unit 2 controls the electromagnetic refrigeration device 3 to stop refrigeration, thereby achieving accurate control of the cooling temperature. The display panel 7 can be a touch screen display device or a combination of a display device and an input key.

[0070] In some embodiments, see Figure 1 The induction cooker refrigeration system further includes a buzzer 9, which is electrically connected to the control unit 2. The control unit 2 can also be used to send a sound prompt signal through the buzzer 9 when it is detected that the temperature of the kitchenware reaches the target temperature; and can also send a sound warning signal through the buzzer 9 when a system failure is detected.

[0071] In some embodiments, see Figure 1 The induction cooker refrigeration system also includes a cooling fan 8, which is electrically connected to the DC / DC module 102 and the control unit 2. The DC / DC module 102 is also used to supply power to the cooling fan 8. The control unit 2 is also used to control the operation of the cooling fan 8 to dissipate heat and cool down the induction cooker refrigeration system, thereby preventing the induction cooker refrigeration system from being overheated and unable to work normally.

[0072] In a second aspect, the present application further provides an induction cooker, comprising the induction cooker refrigeration system as described above, so that the induction cooker has the function of cooling kitchenware.

[0073] In some embodiments, the induction cooker further includes a heating system, which is used to heat the kitchenware. Thus, the induction cooker has dual functions of heating and cooling, which can meet the needs of users in different situations. It can be used to cook food and quickly cool overheated food, thereby improving the practicality and versatility of the induction cooker. This solution innovatively introduces the refrigeration function into the induction cooker, solving the limitation that the traditional induction cooker can only heat but not cool, and providing users with a more convenient and diversified cooking experience.

[0074] Among them, the heating system can be implemented in a variety of ways. For example, the heating system can adopt the traditional electromagnetic induction heating principle, including a heating coil and a high-frequency oscillation circuit. The heating coil generates an alternating magnetic field, and generates eddy currents at the bottom of the kitchenware through electromagnetic induction, thereby heating the kitchenware. Another possible implementation is to use infrared heating technology. The heating system may include an infrared heating element and a reflective cover, and the infrared rays emitted by the infrared heating element are focused by the reflective cover to the bottom of the kitchenware to directly heat the kitchenware. In addition, the heating system can also use a resistance heating element. In this case, the heating system includes a resistance wire and a temperature controller, and heat is generated by controlling the current to pass through the resistance wire, thereby heating the kitchenware.

[0075] Among them, the heating system can be independent of the induction cooker refrigeration system, or it can share some components (such as one or more of the power supply circuit 1, the control unit 2, the display panel 7, the cooling fan 8, etc.) with the induction cooker refrigeration system, thereby reducing the structural complexity and cost of the induction cooker.

[0076] In summary, the electromagnetic cooker refrigeration system and the electromagnetic cooker of the present application use the electromagnetic refrigeration device 3 to cool the kitchenware, thereby realizing the cooling of the food in the kitchenware, solving the problem that the traditional electromagnetic cooker cannot quickly cool the food, and has the advantages of shortening the food cooling time, improving the dining efficiency, providing more flexible temperature control options, and meeting different cooking needs; and also has at least the following advantages: 1. It breaks the single application of traditional induction cookers that only heat but not cool, and broadens the application direction of induction cookers; 2. When using the electromagnetic refrigeration device 3, the rapid on and off of the switch tube 401 can greatly shorten the refrigeration time and improve the refrigeration efficiency; 3. Electromagnetic refrigeration does not use any environmentally harmful chemicals, such as Freon, ammonia and hydrocarbons, so it is more environmentally friendly; 4. Electromagnetic refrigeration consumes less power and has higher energy utilization efficiency; 5. Electromagnetic refrigeration does not require a gas compressor, has few moving parts, no vibration, zero noise, high reliability, long life, and easy maintenance; 6. Since the magnetic material piece 301 is solid, its entropy density is much greater than that of gas, so it is easy to miniaturize and reduce the volume of the structure.

[0077] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0078] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An induction cooker refrigeration system, characterized in that: Used for cooling kitchenware, comprising a power supply circuit (1), a control unit (2), an electromagnetic refrigeration device (3) and a switch control circuit (4); The power supply circuit (1) is used to supply power to the control unit (2), the electromagnetic refrigeration device (3) and the switch control circuit (4); The electromagnetic refrigeration device (3) comprises a magnetic material piece (301), a heat dissipation device (302) and an electromagnetic module (303); the electromagnetic module (303) is used to generate an alternately switched on and off magnetic field so that the magnetic material piece (301) generates a magnetocaloric effect and thereby alternately releases and absorbs heat; the heat dissipation device (302) is used to dissipate heat from the magnetic material piece (301) when the magnetic material piece (301) releases heat; and the magnetic material piece (301) is used to absorb heat from kitchenware when absorbing heat; The control unit (2) is electrically connected to the electromagnetic refrigeration device (3), and controls the electromagnetic module (303) to generate an alternately on-off magnetic field through the switch control circuit (4).

2. The induction cooker refrigeration system according to claim 1, characterized in that: The electromagnetic module (303) comprises an S magnetic pole and an N magnetic pole arranged opposite to each other on both sides of the magnetic material piece (301); when the electromagnetic module (303) is powered on, a magnetic field passing through the magnetic material piece (301) is generated between the S magnetic pole and the N magnetic pole.

3. The induction cooker refrigeration system according to claim 1, characterized in that: A first heat insulation net (304) is arranged on the upper side of the magnetic material piece (301); the heat dissipation device (302) is arranged on a side of the magnetic material piece (301) other than the upper side; a second heat insulation net (305) is arranged between the heat dissipation device (302) and the magnetic material piece (301); the first heat insulation net (304) and the second heat insulation net (305) both have a plurality of mesh holes (306), and the mesh holes (306) can be closed and opened; the first heat insulation net (304) is used for contacting with kitchen utensils; The mesh holes (306) of the first heat-insulating net (304) are closed when the magnetic material piece (301) releases heat, and are opened when the magnetic material piece (301) absorbs heat; the mesh holes (306) of the second heat-insulating net (305) are opened when the magnetic material piece (301) releases heat, and are closed when the magnetic material piece (301) absorbs heat.

4. The induction cooker refrigeration system according to claim 3, characterized in that: The first heat-insulating net (304) and the second heat-insulating net (305) both comprise a fixed net layer (307) having a first mesh hole (3071), a movable net layer (308) having a second mesh hole (3081), and a driving device (309); the fixed net layer (307) and the movable net layer (308) are stacked, and the movable net layer (308) is movable relative to the fixed net layer (307); the driving device (309) is used to drive the movable net layer (308) to move back and forth relative to the fixed net layer (307), so that the second mesh hole (3081) and the first mesh hole (3071) are aligned to achieve the opening of the mesh hole (306), or the second mesh hole (3081) and the first mesh hole (3071) are misaligned to achieve the closing of the mesh hole (306).

5. The induction cooker refrigeration system according to claim 3, characterized in that: The electromagnetic refrigeration device (3) further comprises a heat-insulating shell (310); the magnetic material piece (301), the heat dissipation device (302), the electromagnetic module (303) and the second heat-insulating net (305) are all arranged in the heat-insulating shell (310); the heat-insulating shell (310) is provided with a heat-absorbing opening (311) and a heat-dissipating opening (312); the first heat-insulating net (304) is arranged at the heat-absorbing opening (311); and the heat dissipation device (302) discharges heat through the heat-dissipating opening (312).

6. The induction cooker refrigeration system according to claim 1, characterized in that: The switch control circuit (4) comprises a switch tube (401) and a switch tube drive circuit (402); the switch tube (401), the electromagnetic refrigeration device (3) and the power supply circuit (1) are connected to form a magnetic field control loop; the switch tube drive circuit (402) is connected to the control unit (2), the power supply circuit (1) and the gate of the switch tube (401); the control unit (2) is used to send a switch control signal to the switch tube drive circuit (402); and the switch tube drive circuit (402) is used to control the switching of the switch tube (401) according to the switch control signal.

7. The induction cooker refrigeration system according to claim 6, characterized in that: The power supply circuit (1) comprises an AC / DC module (101), a DC / DC module (102) and a rectifier bridge (103); the switch tube (401), the electromagnetic refrigeration device (3) and the rectifier bridge (103) are connected to form the magnetic field control loop, and the rectifier bridge (103) is used to convert the mains power into direct current; the DC / DC module (102) and the switch tube drive circuit (402) are both electrically connected to the AC / DC module (101), and the DC / DC module (102) is also electrically connected to the control unit (2); the AC / DC module (101) is used to convert the mains power into direct current and supply it to the DC / DC module (102) and the switch tube drive circuit (402); and the DC / DC module (102) is used to regulate the voltage of the direct current provided by the AC / DC module (101) and then supply power to the control unit (2).

8. The induction cooker refrigeration system according to claim 5, characterized in that: The device further comprises a temperature sensor group (6), the temperature sensor group (6) being electrically connected to the control unit (2) and used for detecting the temperature of the kitchenware, the magnetic material piece (301) and the heat exhaust opening (312); the control unit (2) being used for comparing the temperature of the kitchenware, the magnetic material piece (301) and the heat exhaust opening (312) to control the on and off of the magnetic field and the opening and closing of the meshes (306) of the first heat insulation net (304) and the second heat insulation net (305).

9. An induction cooker, characterized in that: The invention comprises an induction cooker refrigeration system as described in any one of claims 1 to 8.

10. The induction cooker according to claim 9, characterized in that: Also included is a heating system, which is used to heat the kitchenware.

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