Electromagnetic oven based on aerodynamic cooling

Abstract

The invention belongs to the technical field of household appliances, and discloses an induction cooker based on aerodynamic cooling, the induction cooker comprises an upper cover, a machine body shell, a heating coil and a main electric control board, and the upper cover and the machine body shell define a main inner cavity; the main inner cavity is divided into a heat dissipation flow channel and an equipment cavity; the heating coil and the main electric control board are arranged in the equipment cavity, and the equipment cavity is provided with an air inlet communicated with the outside; the heat dissipation flow channel comprises a first end and a second end, the second end communicates with the outside through the air outlet, the first end communicates with the equipment cavity through the hole, and a heat collector is arranged at the first end and used for absorbing heat and increasing the temperature to form a heat source, so that surrounding air is heated and expanded to form a high-pressure area. The air in the heat dissipation flow channel flows from the first end to the second end under the action of the high-pressure area and is discharged from the air outlet; therefore, air flow replacement inside and outside the inner cavity of the induction cooker can be effectively realized without a cooling fan, and heat dissipation is realized.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and more particularly, to an induction cooker based on aerodynamic cooling. Background Art

[0002] An induction cooker, also known as an electromagnetic stove, is characterized by high efficiency, safety, and cleanliness, and is thus widely used in modern kitchens. A traditional induction cooker mainly includes an upper cover (including a panel and a cover plate), a body shell, a heating coil, a cooling fan, a main electronic control board, and an operation panel. The upper cover and the body shell enclose an inner cavity, and the heating coil, the cooling fan, the main electronic control board, and the operation panel are all arranged in this inner cavity. Among them, the main electronic control board includes power devices (such as MOS transistors, IGBT transistors, etc.) for controlling the heating power of the heating coil. These power devices generate a large amount of heat during operation, and this heat is dissipated to the external environment through the cooling fan, thereby preventing the inner cavity from overheating and ensuring the normal operation of each component in the inner cavity.

[0003] However, this traditional heat dissipation structure of the induction cooker has some obvious defects. First, since a cooling fan is used for heat dissipation, larger ventilation holes need to be provided to maintain smooth air flow and thus achieve an effective cooling effect. The larger ventilation holes are likely to allow impurities (such as oil stains or other sundries) and insects (such as cockroaches, flies, etc.) to enter the inner cavity of the induction cooker, thereby causing damage to the internal circuit and affecting the normal operation and service life of the induction cooker.

[0004] Second, using a cooling fan for active heat dissipation requires additional electrical energy consumption, increasing the energy consumption of the induction cooker. This will not only increase the electricity bill of users, but also go against the concept of energy conservation and environmental protection. In the context of society's increasing emphasis on energy efficiency today, this high-energy-consuming heat dissipation method is obviously not ideal.

[0005] In addition, as a mechanical component, the cooling fan is prone to damage due to long-term use. The failure of the fan will not only directly affect the heat dissipation effect, but may also cause other components of the induction cooker to be damaged due to overheating. This greatly reduces the reliability and service life of the induction cooker, increasing the maintenance cost and replacement frequency of users.

[0006] Finally, the cooling fan generates a certain amount of noise during operation, affecting the user experience, especially more obvious in a quiet kitchen environment. This noise may bring unnecessary annoyance to users and reduce the user satisfaction of the induction cooker.

[0007] In view of the above problems, the prior art urgently needs to be improved. Summary of the Invention

[0008] The purpose of this application is to provide an induction cooker based on aerodynamic cooling, which can effectively realize the air flow replacement inside and outside the inner cavity of the induction cooker without a cooling fan, so as to achieve heat dissipation.

[0009] This application provides an induction cooker based on aerodynamic cooling, including an upper cover, a body shell, a heating coil and a main electronic control board. The upper cover and the body shell enclose a main inner cavity; the main inner cavity is divided into a heat dissipation flow channel and an equipment cavity; The heating coil and the main electronic control board are arranged in the equipment cavity, and the equipment cavity is provided with an air inlet communicating with the outside; The heat dissipation flow channel includes a first end and a second end. The second end is communicated with the outside through an air outlet. The first end is communicated with the equipment cavity through pores, and a heat collector is arranged at the first end. The heat collector is used for absorbing heat and raising the temperature to form a heat source, so that the surrounding air is heated and expanded to form a high-pressure area. Furthermore, the air in the heat dissipation flow channel flows from the first end to the second end under the action of the high-pressure area and is discharged from the air outlet.

[0010] This induction cooker realizes automatic heat dissipation by using the aerodynamic principle, can effectively realize the air flow replacement inside and outside the inner cavity of the induction cooker without a cooling fan, so as to achieve heat dissipation, and has the advantages of reducing energy consumption, improving reliability and reducing noise. In addition, since the cooling fan is cancelled, there is no need to set large ventilation holes, so the probability of impurities and insects entering the inside of the induction cooker can be reduced.

[0011] Preferably, the main electronic control board includes a power device, and the power device is a silicon carbide MOSFET tube.

[0012] Using a silicon carbide MOSFET tube as the power device can increase the eddy current frequency of the induction cooker, can heat more types of metal cookware, thus reducing the constraint on the selection of the metal material type of the cookware; the silicon carbide MOSFET tube has strong high-temperature resistance and can operate normally at high temperatures. Therefore, the requirement for the heat dissipation performance of the induction cooker is lower, and heat dissipation based on the above aerodynamic principle can meet the working requirements of the silicon carbide MOSFET tube; in addition, the low-power characteristic of the silicon carbide MOSFET tube can also reduce heat generation and further reduce the demand for heat dissipation.

[0013] Preferably, the heat collector includes a base and a plurality of fins arranged on the base; both the base and the fins are made of metal.

[0014] This structure can increase the heat exchange area and improve the heat exchange efficiency. The base, as the carrier of the heat source, can quickly absorb heat, while the plurality of fins can quickly transfer the heat to the surrounding air.

[0015] Preferably, the fins are arranged at intervals, and an air flow channel is formed between any two adjacent fins, and the air flow channel extends in a direction from the first end to the second end.

[0016] Preferably, the collector is entirely located in the heat dissipation channel; alternatively, the collector partially extends into the device cavity.

[0017] Preferably, from the first end to the second end, the cross-sectional area of the heat dissipation channel gradually decreases.

[0018] Preferably, the heat dissipation channel is surrounded by a first guide plate, a second guide plate, a first baffle, a second baffle, the upper cover and the fuselage shell. The first guide plate, the second guide plate, the first baffle and the second baffle are all located between the upper cover and the fuselage shell. The first baffle and the second baffle are located at the first end. The first guide plate extends from the first baffle to the second end, and the second guide plate extends from the second baffle to the second end.

[0019] Preferably, from the first end to the second end, the distance between the first guide plate and the second guide plate gradually decreases.

[0020] Preferably, a guide island platform is arranged in the heat dissipation channel, and the guide island platform is used to compress the cross-sectional area of the heat dissipation channel to increase the air flow velocity.

[0021] Preferably, the guide island platform extends from the side close to the first end to the side close to the second end, and from the end close to the first end to the end close to the second end, the lateral dimension of the guide island platform gradually decreases.

[0022] Preferably, there is a first gap between the guide island platform and the first guide plate, and a second gap between the guide island platform and the second guide plate; from the end close to the first end to the end close to the second end, both the first gap and the second gap gradually decrease.

[0023] Preferably, the guide island platform includes a first arc surface, a second arc surface, a first side surface and a second side surface; The first arc surface is located at the end of the guide island platform close to the first end, and the second arc surface is located at the end of the guide island platform close to the second end; the first side surface is connected between one end of the first arc surface and one end of the second arc surface, and the first side surface is tangent to both the first arc surface and the second arc surface; the second side surface is connected between the other end of the first arc surface and the other end of the second arc surface, and the second side surface is tangent to both the first arc surface and the second arc surface.

[0024] Preferably, the body housing is provided with a stepped portion protruding outward, the stepped portion has a bottom surface arranged downward, and both the air inlet and the air outlet are arranged on the bottom surface of the stepped portion.

[0025] Preferably, the device cavity is partitioned into a first device cavity and a second device cavity. The heating coil and the main electronic control board are arranged in the first device cavity, and an operation panel is also arranged in the second device cavity; the first device cavity communicates with the first end through pores.

[0026] Beneficial effects: The induction cooker based on aerodynamic cooling provided by this application utilizes the aerodynamic principle to achieve automatic heat dissipation, can effectively realize the air flow replacement inside and outside the inner cavity of the induction cooker without a cooling fan, thereby achieving heat dissipation, and has the advantages of reducing energy consumption, improving reliability and reducing noise. In addition, since the cooling fan is cancelled, there is no need to set large ventilation holes, so the probability of impurities and insects entering the inside of the induction cooker can be reduced. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of the induction cooker based on aerodynamic cooling provided by an embodiment of this application.

[0028] Figure 2 is Figure 1 an enlarged view of part S in

[0029] Figure 3 It is an internal structure diagram of the induction cooker based on aerodynamic cooling provided by an embodiment of this application.

[0030] Figure 4 It is a bottom view of the induction cooker based on aerodynamic cooling provided by an embodiment of this application.

[0031] Figure 5 It is a side view of the induction cooker based on aerodynamic cooling provided by an embodiment of this application.

[0032] Figure 6 is a schematic structural diagram of the heat collector.

[0033] Figure 7 is a contour map of the air flow velocity in the simulation results.

[0034] Figure 8 is a schematic diagram of the velocity field in the simulation results.

[0035] Label description: 1. Upper cover; 2. Body housing; 201. Step portion; 3. Heating coil; 4. Main electronic control board; 5. Heat dissipation channel; 501. First end; 502. Second end; 503. First deflector; 504. Second deflector; 505. First baffle; 506. Second baffle; 6. Equipment cavity; 601. First equipment cavity; 602. Second equipment cavity; 7. Air inlet; 8. Air outlet; 9. Collector; 901. Substrate; 902. Fins; 903. Air flow channel; 10. Deflection island platform; 1001. First arc surface; 1002. Second arc surface; 1003. First side surface; 1004. Second side surface; 11. Operation panel. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying 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 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 present application claimed, but only 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 creative efforts belong to the scope of protection of the present application.

[0037] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, 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 the present application, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0038] As a cooking device widely used in modern kitchens, induction cookers are characterized by high efficiency, safety, and cleanliness. The heat dissipation system of traditional induction cookers mainly relies on heat dissipation fans to maintain the stability of the internal temperature. However, there are some significant technical problems with this heat dissipation method. First, in order to ensure smooth air flow, larger ventilation holes need to be set, which increases the risk of impurities and insects entering the interior of the induction cooker and may cause damage to the internal circuit. Second, the use of heat dissipation fans will increase additional energy consumption and reduce the overall energy efficiency of the induction cooker. In addition, as a mechanical component, the reliability of the heat dissipation fan directly affects the service life and performance stability of the induction cooker. These problems seriously restrict the long-term reliable operation of induction cookers and the improvement of energy efficiency.

[0039] If these technical problems cannot be effectively solved, it will have a serious impact on the overall performance and market competitiveness of induction cookers.

[0040] For this reason, refer toFigures 1-6 , this application provides an induction cooker based on aerodynamic cooling, which includes an upper cover 1, a body shell 2, a heating coil 3, and a main electronic control board 4. The upper cover 1 and the body shell 2 enclose a main inner cavity; the main inner cavity is divided into a heat dissipation flow channel 5 and a device cavity 6; The heating coil 3 and the main electronic control board 4 are arranged in the device cavity 6, and the device cavity 6 is provided with an air inlet 7 communicating with the outside; The heat dissipation flow channel 5 includes a first end 501 and a second end 502. The second end 502 communicates with the outside through an air outlet 8. The first end 501 communicates with the device cavity 6 through a pore a (see Figure 2 ), and a heat collector 9 is arranged at the first end 501. The heat collector 9 is used to absorb heat and increase the temperature to form a heat source, so that the surrounding air is heated and expanded to form a high-pressure area (that is, a high-pressure area is formed at the first end 501), and then the air in the heat dissipation flow channel 5 flows from the first end 501 to the second end 502 and is discharged from the air outlet 8 under the action of the high-pressure area.

[0041] This induction cooker utilizes the aerodynamic principle to achieve automatic heat dissipation, and can effectively realize the air flow replacement inside and outside the inner cavity of the induction cooker without a cooling fan, so as to achieve heat dissipation. It has the advantages of reducing energy consumption, improving reliability, and reducing noise. In addition, since the cooling fan is cancelled, there is no need to set large ventilation holes, so the probability of impurities and insects entering the inside of the induction cooker can be reduced.

[0042] Among them, the upper cover 1 and the body shell 2 refer to the external structure of the induction cooker, which is used to enclose the main inner cavity. Specifically, it can be made of metal materials or heat-resistant plastic materials.

[0043] Among them, the heat dissipation flow channel 5 refers to the channel for air flow in the main inner cavity, and specifically can be realized by a cavity structure with a specific shape.

[0044] Among them, the device cavity 6 refers to the space in the main inner cavity for placing the core components of the induction cooker, and specifically can be separated from the heat dissipation flow channel 5 by a partition or a wall structure.

[0045] Among them, the heat collector 9 refers to a device for absorbing heat and forming a heat source, and specifically can be realized by heat dissipation fins or heat dissipation fins made of metal materials.

[0046] This application divides the main inner cavity into a heat dissipation flow channel 5 and a device cavity 6, and sets a heat collector 9 at the first end 501 of the heat dissipation flow channel 5, and cleverly uses the principle of air heating and expansion to form a high-pressure area, driving the air to flow from the first end 501 to the second end 502 and be discharged from the air outlet 8. At the same time, the cold air from the outside will automatically enter the device cavity 6 from the air inlet 7, realizing natural circulation heat dissipation. This design not only avoids the energy consumption and noise problems brought by the cooling fan, but also reduces the risk of impurities and insects entering the inside of the induction cooker, improving the overall energy efficiency and reliability of the induction cooker.

[0047] Among them, the main electronic control board 4 includes power devices, and conventional power devices such as MOS transistors and IGBT transistors can be selected for the power devices. However, more preferably, the power device is a silicon carbide MOSFET transistor.

[0048] Using a silicon carbide MOSFET transistor as the power device can increase the eddy current frequency of the induction cooker, enable heating of cookware of more metal material types, thereby reducing the constraint on the selection of the metal material type of the cookware; the silicon carbide MOSFET transistor has strong high-temperature resistance and can operate normally at high temperatures. Therefore, the requirement for the heat dissipation performance of the induction cooker is lower, and heat dissipation based on the above air dynamic principle can meet the working requirements of the silicon carbide MOSFET transistor; in addition, the low-power consumption characteristic of the silicon carbide MOSFET transistor can also reduce heat generation and further reduce the demand for heat dissipation.

[0049] In some possible implementation manners, see Figure 6 , the heat collector 9 includes a base 901 and a plurality of fins 902 arranged on the base 901; both the base 901 and the fins 902 are metals.

[0050] This structure can increase the heat exchange area and improve the heat exchange efficiency. The base 901, as the carrier of the heat source, can quickly absorb heat, while the plurality of fins 902 can quickly transfer the heat to the surrounding air. Among them, both the base 901 and the fins 902 are made of metal materials, and metal has good thermal conductivity and can quickly transfer heat from the heat source to the air. The use of metal materials further improves the heat exchange efficiency, enabling the air to be heated and expanded faster, forming a stronger high-pressure area, thereby promoting the flow of air in the heat dissipation channel 5.

[0051] The base 901 and the fins 902 of the heat collector 9 can be made of a variety of metal materials, such as aluminum, copper or their alloys. These materials have excellent thermal conductivity and can quickly transfer heat. The base 901 can be designed in a flat shape or with grooves to increase the heat exchange area. The fins 902 can be designed in various shapes such as straight plates, wavy plates or honeycomb shapes to increase the heat exchange area.

[0052] The connection method between the base 901 and the fins 902 can adopt methods such as welding, riveting or integral forming. The integral forming method can reduce the thermal resistance and improve the heat conduction efficiency, but the manufacturing cost is relatively high. The welding or riveting methods are more flexible and convenient for maintenance and replacement.

[0053] Among them, the number of the heat collectors 9 can be one or more, which is specifically set according to actual needs.

[0054] Among them, the number and arrangement of the fins 902 can be adjusted according to actual needs.

[0055] In some preferred embodiments, see Figure 6 , the fins 902 are arranged at intervals, and an air flow channel 903 is formed between any two adjacent fins 902. The air flow channel 903 extends in a direction from the first end 501 to the second end 502.

[0056] This design increases the heat dissipation area and provides an effective path for air flow. The air flow channel 903 extends in a direction from the first end 501 to the second end 502, ensuring the directionality of air flow, reducing the obstruction of the air flow by the collector 9, and facilitating the rapid discharge of heat.

[0057] Specifically, the interval arrangement of the fins 902 can be achieved in various ways. For example, the fins 902 can be arranged at equal intervals or with variable intervals to meet different heat dissipation requirements. The shape of the fins 902 can be straight, wavy, or other shapes that can increase the heat dissipation area. The number and interval of the fins 902 can be adjusted according to actual needs to achieve the best heat dissipation effect.

[0058] The design of the air flow channel 903 can also have various variations. The air flow channel 903 can be straight or designed in a slightly curved shape to increase the contact time between the air and the fins 902. The width of the channel can gradually change along the direction from the first end 501 to the second end 502, for example, gradually narrowing, to accelerate the air flow and further improve the heat dissipation efficiency.

[0059] There are various ways to arrange the collector 9 at the first end 501. For example, the collector 9 can be entirely located in the heat dissipation channel 5 (as Figure 3 shown), or the collector 9 can partially extend into the device cavity 6 (for example, the base 901 can partially extend into the device cavity 6. In addition, grooves and / or raised fins can be provided on the part of the base 901 extending into the device cavity 6 to improve the heat absorption efficiency). When the collector 9 partially extends into the device cavity 6, heat can be directly absorbed from the device cavity 6, shortening the heat transfer path and increasing the heat absorption speed, thereby improving the heat dissipation efficiency.

[0060] Preferably, in order to enable the collector 9 to better absorb heat and increase its temperature, the collector 9 can be in contact with the main electronic control board 4. Thus, the collector 9 can directly absorb heat from the contact point with the main electronic control board 4. For example, if the collector 9 is entirely located in the heat dissipation channel 5, the main electronic control board 4 can partially extend into the heat dissipation channel 5 to contact the collector 9; if the collector 9 partially extends into the device cavity 6, the part of the collector 9 extending into the device cavity 6 is in contact with the main electronic control board 4. Further, a heat dissipation layer (such as a copper layer or other metal heat dissipation layer) can be provided on the main electronic control board 4, and the collector 9 is in contact with this heat dissipation layer to absorb heat more efficiently.

[0061] Preferably, from the first end 501 to the second end 502, the cross-sectional area of the heat dissipation channel 5 (i.e., the flow channel cross-sectional area) gradually decreases.

[0062] This design utilizes the continuity principle in fluid mechanics. According to this principle, in a pipeline, the volume flow rate of a fluid is the same at any cross-section. When the cross-sectional area decreases, to maintain the same volume flow rate, the velocity of the fluid must increase. Therefore, the air flow velocity within the heat dissipation channel 5 can be increased, thereby more effectively removing heat from inside the induction cooker and improving the heat dissipation efficiency.

[0063] Among them, the reduction ratio of the cross-sectional area of the heat dissipation channel 5 can be adjusted according to actual requirements. For example, it can be designed to decrease linearly or non-linearly to achieve the best heat dissipation effect. The degree of reduction of the cross-sectional area needs to find a balance between increasing the air flow velocity and maintaining sufficient flow rate.

[0064] In some possible implementation manners, see Figure 3 , the heat dissipation channel 5 is surrounded by a first guiding plate 503, a second guiding plate 504, a first baffle 505, a second baffle 506, an upper cover 1 and a body housing 2. The first guiding plate 503, the second guiding plate 504, the first baffle 505 and the second baffle 506 are all located between the upper cover 1 and the body housing. The first baffle 505 and the second baffle 506 are located at the first end 501. The first guiding plate 503 extends from the first baffle 505 to the second end 502, and the second guiding plate 504 extends from the second baffle 506 to the second end 502.

[0065] The advantages of this structural design are forming a closed channel, reasonably utilizing space, optimizing the air flow path and improving the heat dissipation efficiency. The first baffle 505 and the second baffle 506 are located at the first end 501, which play the role of guiding the air flow into the heat dissipation channel 5 and blocking the air flow in the heat dissipation channel 5 from flowing back to the device cavity 6, contributing to forming a stable air flow. The first guiding plate 503 extends from the first baffle 505 to the second end 502, and the second guiding plate 504 extends from the second baffle 506 to the second end 502. This design can ensure that the air flow flows along a predetermined path, improving the heat dissipation efficiency.

[0066] Among them, the first guiding plate 503, the second guiding plate 504, the first baffle 505 and the second baffle 506 can adopt a straight plate design or an arc design. These plates are preferably made of heat-insulating materials (such as plastics or ceramics, etc.) or coated with a heat-insulating layer on the surface to prevent the heat in the device cavity 6 from entering the heat dissipation channel 5 through these plates and disturbing the temperature distribution in the heat dissipation channel 5, thereby affecting the smoothness of the air flow.

[0067] In some implementation manners, see Figure 3, from the first end 501 to the second end 502, the distance between the first deflector 503 and the second deflector 504 gradually decreases. This design can cause the air velocity to gradually increase during the air flow process. According to Bernoulli's principle, during the fluid flow process, a decrease in cross-sectional area will result in an increase in flow velocity. Therefore, this design can effectively increase the air flow velocity, thereby enhancing the heat dissipation effect.

[0068] In some embodiments, see Figure 1 , Figure 3 , a flow guiding island platform 10 is provided in the heat dissipation flow channel 5. The flow guiding island platform 10 is used to compress the cross-sectional area of the heat dissipation flow channel 5 to increase the air flow velocity. This design utilizes the principle of fluid mechanics. Without adding additional power, by changing the flow channel structure to increase the air flow velocity, thereby enhancing the heat dissipation effect.

[0069] The setting of the flow guiding island platform 10 can be achieved in various ways. For example, the flow guiding island platform 10 can be a fixed structure or an adjustable structure to adapt to different heat dissipation requirements. The shape of the flow guiding island platform 10 can be streamlined to reduce air flow resistance and increase the flow velocity. The position of the flow guiding island platform 10 can be optimized according to the specific structure of the heat dissipation flow channel 5 to achieve the best compression effect.

[0070] There is a close association and interaction between the flow guiding island platform 10 and other structural components of the heat dissipation flow channel 5. The setting of the flow guiding island platform 10 needs to consider the positional relationship with the first deflector 503 and the second deflector 504 to form a suitable air flow channel. At the same time, the size and shape of the flow guiding island platform 10 also need to be coordinated with the overall structure of the heat dissipation flow channel 5 to achieve the best compression effect and flow velocity increase.

[0071] For example, the flow guiding island platform 10 can be designed to extend from the side close to the first end 501 to the side close to the second end 502, and from the end close to the first end 501 to the end close to the second end 502, the transverse dimension of the flow guiding island platform 10 (i.e., the dimension of the cross-section perpendicular to its extension direction) gradually decreases.

[0072] Furthermore, in some embodiments, there is a first gap between the flow guiding island platform 10 and the first deflector 503, and a second gap between the flow guiding island platform 10 and the second deflector 504; from the end close to the first end 501 to the end close to the second end 502, both the first gap and the second gap gradually decrease. This design can cause the air flow to gradually accelerate during the flow process, improving the heat dissipation efficiency.

[0073] Furthermore, see Figure 3 , the flow guiding island platform 10 can further include a first arc surface 1001, a second arc surface 1002, a first side surface 1003, and a second side surface 1004; The first arc surface 1001 is located at one end of the diversion island platform 10 close to the first end 501, and the second arc surface 1002 is located at one end of the diversion island platform 10 close to the second end 502; the first side surface 1003 is connected between one end of the first arc surface 1001 and one end of the second arc surface 1002, and the first side surface 1003 is tangent to both the first arc surface 1001 and the second arc surface 1002; the second side surface 1004 is connected between the other end of the first arc surface 1001 and the other end of the second arc surface 1002, and the second side surface 1004 is tangent to both the first arc surface 1001 and the second arc surface 1002. This streamline design can reduce air flow resistance and make the air flow more smoothly.

[0074] In some preferred embodiments, see Figures 3-5 , the body shell 2 is provided with a stepped portion 201 protruding outward, the stepped portion 201 has a bottom surface arranged downward, and both the air inlet 7 and the air outlet 8 are arranged on the bottom surface of the stepped portion 201. This concealed design of the air inlet 7 and the air outlet 8 can effectively reduce the risk of impurities and insects entering the interior of the induction cooker, improving the safety and reliability of the induction cooker. To further reduce the risk of impurities and insects entering the interior of the induction cooker, a filter screen can also be provided at the air inlet 7 and the air outlet 8.

[0075] Among them, the air inlet 7 and / or the air outlet 8 can adopt a segmented structure (that is, composed of multiple sections of small holes spaced apart from each other), so that, under the condition of the same ventilation area, the size of each small hole is smaller, which is more conducive to reducing the risk of impurities and insects entering the interior of the induction cooker.

[0076] In some possible embodiments, see Figure 1 , the device cavity 6 is divided into a first device cavity 601 and a second device cavity 602, the heating coil 3 and the main electronic control board 4 are arranged in the first device cavity 601, and an operation panel 11 is also arranged in the second device cavity 602; the first device cavity 601 is communicated with the first end 501 through a pore a. This design can concentrate the heating elements together, facilitating heat dissipation, and at the same time can prevent heat from affecting the normal operation of the operation panel 11.

[0077] Among them, the first device cavity 601 and the second device cavity 602 can be separated by a baffle, for example Figure 1 、 Figure 3 In, both ends of the first baffle 505 extend to opposite sides of the body shell 2, thereby dividing the device cavity 6 into a first device cavity 601 and a second device cavity 602; but not limited to this.

[0078] The internal air flow field of the above induction cooker is simulated by using pneumatic simulation software, and the air flow velocity contour distribution diagram and the velocity field schematic diagram in the simulation results are respectively as Figure 7 、 Figure 8As shown in the figure, it can be seen that the air flow in the heat dissipation channel 5 flows from the first end 501 to the second end 502, which proves that the heat dissipation structure of the present application can effectively realize the air flow replacement inside and outside the inner cavity of the induction cooker without a heat dissipation fan, thereby realizing heat dissipation.

[0079] In summary, the present application has at least the following advantages: 1. By using the air dynamics theory, a heat dissipation channel 5 and a heat collector 9 are designed inside the body shell 2, and the heat dissipation fan is cancelled, which can bring better heat dissipation ability to the inside of the induction cooker; 2. Using a silicon carbide MOSFET tube to replace the traditional power device, the high-temperature tolerance of the induction cooker circuit is greatly improved, and the requirement for the heat dissipation ability of the induction cooker is reduced, ensuring that the heat dissipation using the above air dynamics principle can meet the working requirements of the silicon carbide MOSFET tube; 3. There are no large ventilation holes in the body shell 2, and the ventilation holes are designed in a hidden manner, greatly reducing the risk of impurities and insects entering the inside of the induction cooker.

[0080] In this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0081] The above description is only for the embodiments 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 can have various changes and modifications. 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 based on aerodynamic cooling, comprising an upper cover (1), a body housing (2), a heating coil (3) and a main electronic control board (4), wherein the upper cover (1) and the body housing (2) enclose a main inner cavity; characterized in that, The main inner cavity is divided into a heat dissipation channel (5) and an equipment cavity (6); The heating coil (3) and the main electronic control board (4) are arranged in the equipment cavity (6), and the equipment cavity (6) is provided with an air inlet (7) communicating with the outside; The heat dissipation channel (5) includes a first end (501) and a second end (502). The second end (502) communicates with the outside through an air outlet (8). The first end (501) communicates with the equipment cavity (6) through pores, and a heat collector (9) is arranged at the first end (501). The heat collector (9) is used for absorbing heat and increasing the temperature to form a heat source, so that the surrounding air is heated and expanded to form a high-pressure area. Furthermore, the air in the heat dissipation channel (5) flows from the first end (501) to the second end (502) under the action of the high-pressure area and is discharged from the air outlet (8).

2. The electromagnetic cooker based on aerodynamic cooling according to claim 1, wherein The main electronic control board (4) includes power devices, and the power devices are silicon carbide MOSFET tubes.

3. The electromagnetic cooker based on aerodynamic cooling according to claim 1, characterized in that, The heat collector (9) includes a base (901) and a plurality of fins (902) arranged on the base (901); both the base (901) and the fins (902) are metals.

4. The electromagnetic cooker based on aerodynamic cooling according to claim 3, characterized in that, The fins (902) are arranged at intervals, and an air flow channel (903) is formed between any two adjacent fins (902). The air flow channel (903) extends along the direction from the first end (501) to the second end (502).

5. The electromagnetic cooker based on aerodynamic cooling according to claim 3, wherein, The heat collector (9) is entirely located in the heat dissipation channel (5); or, the heat collector (9) partially extends into the equipment cavity (6).

6. The electromagnetic cooker based on aerodynamic cooling according to claim 1, characterized in that, From the first end (501) to the second end (502), the cross-sectional area of the heat dissipation channel (5) gradually decreases.

7. The electromagnetic cooker based on aerodynamic cooling according to claim 6, wherein The heat dissipation channel (5) is surrounded by a first guide plate (503), a second guide plate (504), a first baffle (505), a second baffle (506), the upper cover (1) and the fuselage shell (2). The first guide plate (503), the second guide plate (504), the first baffle (505) and the second baffle (506) are all located between the upper cover (1) and the fuselage shell (2). The first baffle (505) and the second baffle (506) are located at the first end (501). The first guide plate (503) extends from the first baffle (505) to the second end (502), and the second guide plate (504) extends from the second baffle (506) to the second end (502).

8. The electromagnetic cooker based on aerodynamic cooling according to claim 7, characterized in that From the first end (501) to the second end (502), the distance between the first guide plate (503) and the second guide plate (504) gradually decreases.

9. The electromagnetic cooker based on aerodynamic cooling according to claim 7, wherein A guide island platform (10) is arranged in the heat dissipation channel (5), and the guide island platform (10) is used for compressing the cross-sectional area of the heat dissipation channel (5) to increase the air flow velocity.

10. The electromagnetic cooker based on aerodynamic cooling according to claim 9, wherein, The diversion island platform (10) extends from the side near the first end (501) to the side near the second end (502), and the transverse dimension of the diversion island platform (10) gradually decreases from the end near the first end (501) to the end near the second end (502).

11. The electromagnetic cooker based on aerodynamic cooling according to claim 9, wherein, There is a first gap between the diversion island platform (10) and the first diversion plate (503), and a second gap between the diversion island platform (10) and the second diversion plate (504); from the end near the first end (501) to the end near the second end (502), both the first gap and the second gap gradually decrease.

12. The electromagnetic cooker based on aerodynamic cooling according to claim 9, characterized in that, The diversion island platform (10) includes a first arc surface (1001), a second arc surface (1002), a first side surface (1003) and a second side surface (1004); The first arc surface (1001) is located at the end of the diversion island platform (10) near the first end (501), and the second arc surface (1002) is located at the end of the diversion island platform (10) near the second end (502); the first side surface (1003) is connected between one end of the first arc surface (1001) and one end of the second arc surface (1002), and the first side surface (1003) is tangent to both the first arc surface (1001) and the second arc surface (1002); the second side surface (1004) is connected between the other end of the first arc surface (1001) and the other end of the second arc surface (1002), and the second side surface (1004) is tangent to both the first arc surface (1001) and the second arc surface (1002).

13. The electromagnetic cooker based on aerodynamic cooling according to any one of claims 1-12, characterized in that, The fuselage shell (2) is provided with a stepped portion (201) protruding outward, the stepped portion (201) has a bottom surface arranged downward, and both the air inlet (7) and the air outlet (8) are arranged on the bottom surface of the stepped portion (201).

14. The electromagnetic cooker based on aerodynamic cooling according to any one of claims 1-12, characterized in that, The equipment cavity (6) is divided into a first equipment cavity (601) and a second equipment cavity (602), the heating coil (3) and the main electronic control board (4) are arranged in the first equipment cavity (601), and an operation panel (11) is also arranged in the second equipment cavity (602); the first equipment cavity (601) communicates with the first end (501) through pores.

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