An induction cooker based on air dynamic cooling

Abstract

The present application belongs to the technical field of household appliances, and discloses an induction cooker based on aerodynamic cooling, comprising an upper cover, a body shell, a heating coil and a main electric control board, wherein the upper cover and the body shell form a main inner cavity; the main inner cavity is divided into a heat dissipation 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 connected to the outside; the heat dissipation channel comprises a first end and a second end, the second end is connected to the outside through the air outlet, the first end is connected to the equipment cavity through a pore, and a heat collector is provided at the first end, the heat collector is used to absorb heat and heat up to form a heat source, so that the surrounding air is heated and expanded to form a high-pressure area, and then the air in the heat dissipation 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; thereby, in the absence of a heat dissipation fan, the air flow replacement inside and outside the inner cavity of the induction cooker can be effectively realized, thereby achieving heat dissipation.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to an induction cooker based on air dynamic cooling. Background Art

[0002] Induction cookers, also known as electromagnetic stoves, are highly efficient, safe, and clean, making them widely used in modern kitchens. A traditional induction cooker primarily consists of a cover (including a panel and cover plate), a main housing, a heating coil, a cooling fan, a main control board, and an operating panel. The cover and housing form an inner cavity, within which the heating coil, cooling fan, main control board, and operating panel are located. The main control board includes power devices (such as MOS transistors and IGBTs) that control the heating power of the heating coil. These power devices generate significant heat during operation, which is dissipated to the outside world via the cooling fan, thereby preventing overheating in the inner cavity and ensuring the proper operation of the components within.

[0003] However, this traditional induction cooker heat dissipation structure has some significant drawbacks. First, because the heat dissipation fan is used, large ventilation holes are required to ensure smooth air flow and achieve effective cooling. Large ventilation holes easily allow impurities (such as oil and other debris) and insects (such as cockroaches and flies) to enter the induction cooker cavity, causing damage to the internal circuitry and affecting the normal operation and service life of the induction cooker.

[0004] Secondly, using a cooling fan for active cooling consumes additional energy, increasing the energy consumption of the induction cooker. This not only increases the user's electricity bill but also contradicts the concept of energy conservation and environmental protection. In today's society, where energy efficiency is increasingly important, this high-energy cooling method is clearly not ideal.

[0005] Furthermore, as a mechanical component, the cooling fan is susceptible to damage from prolonged use. Fan failure not only directly affects cooling efficiency but can also damage other components of the induction cooker due to excessive temperatures. This significantly reduces the reliability and lifespan of the induction cooker, increasing maintenance costs and replacement frequency.

[0006] Finally, the cooling fan generates a certain amount of noise when in operation, which affects the user experience, especially in a quiet kitchen environment. This noise may cause unnecessary annoyance to the user and reduce the user satisfaction of the induction cooker.

[0007] In view of the above problems, the existing technology is in urgent need of improvement. 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 replacement of air flow inside and outside the induction cooker cavity without a cooling fan, thereby achieving heat dissipation.

[0009] The present application provides an induction cooker based on air dynamic cooling, comprising an upper cover, a body shell, a heating coil and a main electric control board, wherein the upper cover and the body shell enclose a main inner cavity; the main inner cavity is divided into a heat dissipation channel and an equipment cavity;

[0010] 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 communicating with the outside;

[0011] The heat dissipation channel includes a first end and a second end, the second end is connected to the outside through an air outlet, the first end is connected to the equipment cavity through a pore, and a heat collector is provided at the first end, the heat collector is used to absorb heat and heat up to form a heat source, so that the surrounding air expands due to heat to form a high-pressure area, and then the air in the heat dissipation 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.

[0012] This induction cooker uses aerodynamic principles to achieve automatic heat dissipation. It can effectively realize the air flow replacement inside and outside the induction cooker cavity without a cooling fan, thereby achieving heat dissipation. It has the advantages of reducing energy consumption, improving reliability and reducing noise. In addition, since the cooling fan is eliminated, there is no need to set up large air vents, which can reduce the chance of impurities and insects entering the interior of the induction cooker.

[0013] Preferably, the main electric control board includes a power device, and the power device is a silicon carbide MOSFET tube.

[0014] Using silicon carbide MOSFET tubes as power devices can increase the eddy current frequency of the induction cooker, allowing it to heat cookware made of more metal materials, thereby reducing the constraints on the selection of metal materials for cookware. Silicon carbide MOSFET tubes have strong high-temperature resistance and can operate normally under high-temperature conditions. Therefore, the heat dissipation requirements of the induction cooker are lower. Heat dissipation based on the above-mentioned aerodynamic principles can meet the working requirements of silicon carbide MOSFET tubes. In addition, the low power consumption characteristics of silicon carbide MOSFET tubes can also reduce heat generation, further reducing the need for heat dissipation.

[0015] Preferably, the heat collector comprises a base and a plurality of fins arranged on the base; the base and the fins are both made of metal.

[0016] This structure can increase the heat exchange area and improve heat exchange efficiency. The base acts as a carrier of the heat source and can quickly absorb heat, while the multiple fins can quickly transfer heat to the surrounding air.

[0017] Preferably, the fins are spaced apart from each other, 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.

[0018] Preferably, the heat collector is entirely located in the heat dissipation channel; or, the heat collector partially extends into the equipment cavity.

[0019] Preferably, the cross-sectional area of the heat dissipation channel gradually decreases from the first end to the second end.

[0020] 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 body 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 body 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.

[0021] Preferably, the distance between the first guide plate and the second guide plate gradually decreases from the first end to the second end.

[0022] Preferably, a guide island is provided in the heat dissipation channel, and the guide island is used to compress the cross-sectional area of the heat dissipation channel to increase the air flow velocity.

[0023] Preferably, the guide island extends from a side close to the first end to a side close to the second end, and the lateral size of the guide island gradually decreases from an end close to the first end to an end close to the second end.

[0024] Preferably, there is a first interval between the guide island and the first guide plate, and a second interval between the guide island and the second guide plate; and the first interval and the second interval gradually decrease from the end close to the first end to the end close to the second end.

[0025] Preferably, the guide island comprises a first arc surface, a second arc surface, a first lateral surface and a second lateral surface;

[0026] The first arc surface is located at one end of the guide island close to the first end, and the second arc surface is located at one end of the guide island close to the second end; the first lateral surface is connected between one end of the first arc surface and one end of the second arc surface, and the first lateral surface is tangent to both the first arc surface and the second arc surface; the second lateral surface is connected between the other end of the first arc surface and the other end of the second arc surface, and the second lateral surface is tangent to both the first arc surface and the second arc surface.

[0027] Preferably, the body shell is provided with a stepped portion protruding outward, the stepped portion has a bottom surface arranged downward, and the air inlet and the air outlet are both arranged on the bottom surface of the stepped portion.

[0028] Preferably, the equipment cavity is divided into a first equipment cavity and a second equipment cavity, the heating coil and the main electric control board are arranged in the first equipment cavity, and an operation panel is also arranged in the second equipment cavity; the first equipment cavity is connected to the first end through a pore.

[0029] Beneficial effects: The induction cooker based on aerodynamic cooling provided by the present application uses aerodynamic principles to achieve automatic heat dissipation. It can effectively realize the replacement of air flow inside and outside the inner cavity of the induction cooker without a cooling fan, thereby achieving heat dissipation. It has the advantages of reducing energy consumption, improving reliability and reducing noise. In addition, since the cooling fan is eliminated, there is no need to set up large air vents, which can reduce the chance of impurities and insects entering the interior of the induction cooker. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of an induction cooker based on air dynamic cooling provided in an embodiment of the present application.

[0031] Figure 2 for Figure 1 Enlarged view of the S part in the middle.

[0032] Figure 3 This is a diagram of the internal structure of an induction cooker based on air dynamic cooling provided in an embodiment of the present application.

[0033] Figure 4 A bottom view of an induction cooker based on air dynamic cooling provided in an embodiment of the present application.

[0034] Figure 5 A side view of an induction cooker based on air dynamic cooling provided in an embodiment of the present application.

[0035] Figure 6 Schematic diagram of the collector structure.

[0036] Figure 7 This is the contour distribution diagram of air flow velocity in the simulation results.

[0037] Figure 8 Schematic diagram of the velocity field in the simulation results.

[0038] Explanation of reference numbers: 1. Upper cover; 2. Body shell; 201. Stepped portion; 3. Heating coil; 4. Main electronic control board; 5. Heat dissipation channel; 501. First end; 502. Second end; 503. First guide plate; 504. Second guide plate; 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. Base; 902. Fins; 903. Air flow channel; 10. Guide island; 1001. First arc surface; 1002. Second arc surface; 1003. First lateral surface; 1004. Second lateral surface; 11. Operation panel. DETAILED DESCRIPTION

[0039] 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 generally 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 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 fall within the scope of protection of the present application.

[0040] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or 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 should not be understood as indicating or implying relative importance.

[0041] Induction cookers, a widely used cooking appliance in modern kitchens, are characterized by their efficiency, safety, and cleanliness. Traditional induction cookers' heat dissipation systems primarily rely on cooling fans to maintain a stable internal temperature. However, this cooling method presents significant technical challenges. First, to ensure smooth airflow, large vents are required, increasing the risk of impurities and insects entering the cooker, potentially damaging the internal circuitry. Second, the use of cooling fans increases energy consumption, reducing the cooker's overall energy efficiency. Furthermore, as a mechanical component, the reliability of the cooling fan directly impacts the cooker's lifespan and performance stability. These issues severely hinder the long-term reliable operation and energy efficiency of the induction cooker.

[0042] If these technical problems cannot be effectively solved, it will have a serious impact on the overall performance and market competitiveness of induction cookers.

[0043] For this purpose, refer to Figures 1-6 The present application provides an induction cooker based on air dynamic cooling, comprising an upper cover 1, a body shell 2, a heating coil 3 and a main electric control board 4. The upper cover 1 and the body shell 2 form a main inner cavity; the main inner cavity is divided into a heat dissipation channel 5 and an equipment cavity 6;

[0044] The heating coil 3 and the main electric control board 4 are arranged in the equipment chamber 6, and the equipment chamber 6 is provided with an air inlet 7 communicating with the outside;

[0045] The heat dissipation channel 5 includes a first end 501 and a second end 502. The second end 502 is connected to the outside through the air outlet 8. The first end 501 is connected to the outside through the hole a (see Figure 2 ) is connected to the equipment cavity 6, and a heat collector 9 is provided at the first end 501. The heat collector 9 is used to absorb heat and heat up to form a heat source, so that the surrounding air expands due to heat 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 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.

[0046] This induction cooker uses aerodynamic principles to achieve automatic heat dissipation. It can effectively realize the air flow replacement inside and outside the induction cooker cavity without a cooling fan, thereby achieving heat dissipation. It has the advantages of reducing energy consumption, improving reliability and reducing noise. In addition, since the cooling fan is eliminated, there is no need to set up large air vents, which can reduce the chance of impurities and insects entering the interior of the induction cooker.

[0047] The upper cover 1 and the body shell 2 refer to the external structure of the induction cooker, which are used to enclose the main inner cavity and can be made of metal or heat-resistant plastic.

[0048] The heat dissipation channel 5 refers to a channel in the main inner cavity for air flow, and can be implemented by using a cavity structure of a specific shape.

[0049] The equipment cavity 6 refers to the space in the main inner cavity for placing the core components of the induction cooker, and can be separated from the heat dissipation channel 5 by a partition or a wall structure.

[0050] The heat collector 9 refers to a device for absorbing heat and forming a heat source, and can be implemented by using heat sinks or heat fins made of metal materials.

[0051] By dividing the main inner cavity into a heat dissipation channel 5 and a device cavity 6 and installing a heat collector 9 at the first end 501 of the heat dissipation channel 5, this application cleverly utilizes the principle of air expansion due to heat to form a high-pressure zone, driving air from the first end 501 to the second end 502 and out through the air outlet 8. Simultaneously, cold air from the outside automatically enters the device cavity 6 through the air inlet 7, achieving natural circulation heat dissipation. This design not only avoids the energy consumption and noise issues associated with cooling fans, but also reduces the risk of impurities and insects entering the induction cooker, thereby improving the overall energy efficiency and reliability of the induction cooker.

[0052] The main electric control board 4 includes power devices, which can be conventional power devices such as MOS tubes, IGBT tubes, etc. More preferably, the power devices are silicon carbide MOSFET tubes.

[0053] Using silicon carbide MOSFET tubes as power devices can increase the eddy current frequency of the induction cooker, allowing it to heat cookware made of more metal materials, thereby reducing the constraints on the selection of metal materials for cookware. Silicon carbide MOSFET tubes have strong high-temperature resistance and can operate normally under high-temperature conditions. Therefore, the heat dissipation requirements of the induction cooker are lower. Heat dissipation based on the above-mentioned aerodynamic principles can meet the working requirements of silicon carbide MOSFET tubes. In addition, the low power consumption characteristics of silicon carbide MOSFET tubes can also reduce heat generation, further reducing the need for heat dissipation.

[0054] In some possible implementations, see Figure 6 The heat collector 9 includes a base 901 and a plurality of fins 902 arranged on the base 901; the base 901 and the fins 902 are both made of metal.

[0055] This structure can increase the heat exchange area and improve the heat exchange efficiency. The base 901 acts as a carrier of the heat source and can quickly absorb heat, while the multiple fins 902 can quickly transfer the heat to the surrounding air. Among them, the base 901 and the fins 902 are both made of metal materials. 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, allowing 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.

[0056] The base 901 and 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 as a flat plate or with grooves to increase the heat exchange area. The fins 902 can be designed in a variety of shapes, such as straight plates, wavy shapes, or honeycomb shapes, to increase the heat exchange area.

[0057] The connection between the base 901 and the fins 902 can be achieved by welding, riveting, or integral molding. Integral molding can reduce thermal resistance and improve heat conduction efficiency, but it is more expensive. Welding or riveting offers greater flexibility and facilitates repair and replacement.

[0058] The number of the heat collectors 9 can be one or more, which is set according to actual needs.

[0059] The number and arrangement of the fins 902 can be adjusted according to actual needs.

[0060] In some preferred embodiments, see Figure 6 The fins 902 are spaced apart from each other, 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 .

[0061] This design increases the heat dissipation area and provides an effective path for air flow. The airflow channel 903 extends from the first end 501 to the second end 502, ensuring the directionality of the air flow, reducing the obstruction of the heat collector 9 to the airflow, and facilitating the rapid discharge of heat.

[0062] Specifically, the spacing of the fins 902 can be achieved in a variety of ways. For example, the fins 902 can be arranged at equal intervals or with varying spacing to accommodate different heat dissipation requirements. The fins 902 can be shaped like a straight plate, a wave, or other shapes that increase the heat dissipation area. The number and spacing of the fins 902 can be adjusted according to actual needs to achieve optimal heat dissipation.

[0063] The design of the airflow channel 903 can be varied. The airflow channel 903 can be straight or slightly curved to increase the contact time between the air and the fins 902. The width of the channel can gradually change from the first end 501 to the second end 502, for example, gradually narrowing, to accelerate airflow and further improve heat dissipation efficiency.

[0064] The heat collector 9 can be arranged in various ways at the first end 501. For example, the heat collector 9 can be located entirely in the heat dissipation channel 5 (e.g., Figure 3 Alternatively, the heat collector 9 partially extends into the device cavity 6 (for example, the base 901 may partially extend into the device cavity 6. In addition, the portion of the base 901 extending into the device cavity 6 may be provided with grooves and / or raised fins to improve heat absorption efficiency). When the heat collector 9 partially extends into the device cavity 6, it can absorb heat directly from the device cavity 6, shortening the heat transfer path and increasing the heat absorption rate, thereby improving heat dissipation efficiency.

[0065] Preferably, to better absorb heat and increase temperature, the heat collector 9 can be placed in contact with the main electrical control board 4. This allows the heat collector 9 to absorb heat directly from the point of contact with the main electrical control board 4. For example, if the heat collector 9 is entirely located within the heat dissipation channel 5, the main electrical control board 4 can partially extend into the heat dissipation channel 5 to contact the heat collector 9. If the heat collector 9 partially extends into the equipment cavity 6, the portion of the heat collector 9 that extends into the equipment cavity 6 contacts the main electrical control board 4. Furthermore, a heat dissipation layer (e.g., a copper layer or other metal heat dissipation layer) can be provided on the main electrical control board 4, with the heat collector 9 in contact with this heat dissipation layer, thereby absorbing heat more efficiently.

[0066] Preferably, the cross-sectional area (ie, the channel cross-sectional area) of the heat dissipation channel 5 gradually decreases from the first end 501 to the second end 502 .

[0067] This design utilizes the principle of continuity in fluid mechanics, which states that the volumetric flow rate of a fluid in a pipe is the same across any cross-section. As the cross-sectional area decreases, the fluid velocity must increase to maintain the same volumetric flow rate. This increases the airflow velocity within the heat dissipation channel 5, effectively removing heat from the induction cooker and improving heat dissipation efficiency.

[0068] The reduction ratio of the cross-sectional area of the heat dissipation channel 5 can be adjusted according to actual needs. For example, it can be designed to decrease linearly or nonlinearly to achieve the best heat dissipation effect. The degree of cross-sectional area reduction requires finding a balance between increasing airflow velocity and maintaining sufficient flow rate.

[0069] In some possible implementations, see Figure 3 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, an upper cover 1 and a body 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 body shell. 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.

[0070] The advantages of this structural design are the formation of a closed channel, the rational use of space, the optimization of the airflow path, and the improvement of heat dissipation efficiency. The first baffle 505 and the second baffle 506 are located at the first end 501, guiding airflow into the heat dissipation channel 5 and preventing airflow in the heat dissipation channel 5 from flowing back into the device cavity 6, thereby promoting stable airflow. 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. This design ensures that airflow flows along the predetermined path, improving heat dissipation efficiency.

[0071] Among them, the first guide plate 503, the second guide 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 insulating materials (such as plastic or ceramic, etc.) or coated with an insulating layer on the surface to prevent the heat in the equipment cavity 6 from entering the heat dissipation channel 5 through these plates, disrupting the temperature distribution in the heat dissipation channel 5 and affecting the smoothness of the airflow.

[0072] In some embodiments, see Figure 3 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. This design allows the air velocity to gradually increase during flow. According to Bernoulli's principle, during fluid flow, a decrease in cross-sectional area leads to an increase in flow velocity. Therefore, this design effectively increases the air flow velocity, thereby enhancing the heat dissipation effect.

[0073] In some embodiments, see Figure 1 、 Figure 3 A guide island 10 is installed within the heat dissipation channel 5 to compress the cross-sectional area of the channel 5 and increase the airflow velocity. This design utilizes the principles of fluid mechanics to increase airflow velocity and enhance heat dissipation by changing the channel structure without adding additional power.

[0074] The configuration of the guide island 10 can be implemented in a variety of ways. For example, the guide island 10 can be a fixed structure or an adjustable structure to accommodate different heat dissipation requirements. The guide island 10 can also be streamlined to reduce airflow resistance and increase flow rate. The position of the guide island 10 can be optimized based on the specific structure of the heat dissipation channel 5 to achieve the best compression effect.

[0075] The guide island 10 is closely interconnected and interacts with the other structural components of the heat dissipation channel 5. The placement of the guide island 10 must consider its positional relationship with the first guide plate 503 and the second guide plate 504 to form a suitable airflow path. Furthermore, the size and shape of the guide island 10 must be coordinated with the overall structure of the heat dissipation channel 5 to achieve optimal compression and flow rate improvement.

[0076] For example, the guide island 10 can be designed to extend from a side close to the first end 501 to a side close to the second end 502, and the lateral dimension (i.e., the dimension of the cross section perpendicular to its extension direction) of the guide island 10 gradually decreases from an end close to the first end 501 to an end close to the second end 502.

[0077] Furthermore, in some embodiments, a first spacing is provided between the guide island 10 and the first guide plate 503, and a second spacing is provided between the guide island 10 and the second guide plate 504. Both the first spacing and the second spacing gradually decrease from the end closest to the first end 501 to the end closest to the second end 502. This design can gradually accelerate the airflow during flow, improving heat dissipation efficiency.

[0078] Further, see Figure 3 The guide island 10 may further include a first arc surface 1001, a second arc surface 1002, a first lateral surface 1003 and a second lateral surface 1004;

[0079] The first arc surface 1001 is located at one end of the guide island 10 near the first end 501, and the second arc surface 1002 is located at one end of the guide island 10 near the second end 502. The first lateral 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 lateral surface 1003 is tangent to both the first arc surface 1001 and the second arc surface 1002. The second lateral 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 lateral surface 1004 is tangent to both the first arc surface 1001 and the second arc surface 1002. This streamlined design can reduce airflow resistance and ensure smoother airflow.

[0080] In some preferred embodiments, see Figure 3-Figure 5 The housing 2 is provided with an outwardly protruding stepped portion 201 having a downwardly facing bottom surface. The air inlet 7 and air outlet 8 are both located on the bottom surface of the stepped portion 201. This concealed design of the air inlet 7 and air outlet 8 effectively reduces the risk of impurities and insects entering the induction cooker, thereby improving the safety and reliability of the induction cooker. To further reduce the risk of impurities and insects entering the induction cooker, filters can be installed at the air inlet 7 and air outlet 8.

[0081] Among them, the air inlet 7 and / or the air outlet 8 can adopt a segmented structure (i.e., composed of multiple 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.

[0082] In some possible implementations, see Figure 1 The device chamber 6 is divided into a first device chamber 601 and a second device chamber 602. The heating coil 3 and main electrical control board 4 are located in the first device chamber 601, while the operation panel 11 is also located in the second device chamber 602. The first device chamber 601 is connected to the first end 501 via the aperture a. This design centralizes the heating elements, facilitating heat dissipation while also preventing heat from affecting the normal operation of the operation panel 11.

[0083] The first equipment cavity 601 and the second equipment cavity 602 can be separated by a baffle, for example Figure 1 、 Figure 3 In the embodiment, both ends of the first baffle 505 extend to opposite sides of the body shell 2 , thereby dividing the equipment cavity 6 into a first equipment cavity 601 and a second equipment cavity 602 ; but the present invention is not limited thereto.

[0084] The air flow field inside the induction cooker is simulated using aerodynamic simulation software. The air flow velocity contour distribution diagram and velocity field diagram in the simulation results are shown in Figure 2. Figure 7 、 Figure 8 As shown in the figure, it can be seen that the airflow of 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 induction cooker cavity without a heat dissipation fan, thereby achieving heat dissipation.

[0085] In summary, this application has at least the following advantages:

[0086] 1. By utilizing aerodynamic theory, a heat dissipation channel 5 and a heat collector 9 are designed inside the housing 2, eliminating the need for a heat dissipation fan, thereby providing better heat dissipation capability inside the induction cooker.

[0087] 2. Using silicon carbide MOSFET tubes to replace traditional power devices greatly improves the high-temperature tolerance of the induction cooker circuit and reduces the heat dissipation requirements of the induction cooker, ensuring that the heat dissipation using the above-mentioned aerodynamic principle can meet the working requirements of the silicon carbide MOSFET tube;

[0088] 3. There are no large ventilation holes on the body shell 2, and the ventilation holes are designed to be hidden, which greatly reduces the risk of impurities and insects entering the interior of the induction cooker.

[0089] 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 actual relationship or order between these entities or operations.

[0090] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An induction cooker based on air dynamic cooling, comprising an upper cover (1), a body shell (2), a heating coil (3) and a main electric control board (4), wherein the upper cover (1) and the body shell (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 electric 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) is connected to the outside through an air outlet (8), the first end (501) is connected to the equipment cavity (6) through a pore, and a heat collector (9) is provided at the first end (501), the heat collector (9) is used to absorb heat and increase temperature to form a heat source, so that the surrounding air is heated and expanded to form a high-pressure area, and then 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); The main electric control board (4) includes a power device, and the power device is a silicon carbide MOSFET tube; A guide island (10) is provided in the heat dissipation channel (5), and the guide island (10) is used to compress the cross-sectional area of the heat dissipation channel (5) to increase the airflow velocity; The diversion island (10) comprises a first arc surface (1001), a second arc surface (1002), a first lateral surface (1003) and a second lateral surface (1004); The first arc surface (1001) is located at one end of the guide island (10) close to the first end (501), and the second arc surface (1002) is located at one end of the guide island (10) close to the second end (502); the first lateral 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 lateral surface (1003) is tangent to both the first arc surface (1001) and the second arc surface (1002); the second lateral 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 lateral surface (1004) is tangent to both the first arc surface (1001) and the second arc surface (1002).

2. The induction cooker based on air power cooling according to claim 1, characterized in that: The heat collector (9) comprises a base (901) and a plurality of fins (902) arranged on the base (901); the base (901) and the fins (902) are both made of metal.

3. The induction cooker based on air power cooling according to claim 2, characterized in that: The fins (902) are spaced apart from each other, and an air flow channel (903) is formed between any two adjacent fins (902), and the air flow channel (903) extends in a direction from the first end (501) to the second end (502).

4. The induction cooker based on air power cooling according to claim 2, characterized in that: 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).

5. The induction cooker based on air power 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.

6. The induction cooker based on air power cooling according to claim 5, characterized in that: 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 body 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 body 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).

7. The induction cooker based on air power cooling according to claim 6, 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.

8. The induction cooker based on air power cooling according to claim 1, characterized in that: The guide island (10) extends from a side close to the first end (501) to a side close to the second end (502), and the lateral size of the guide island (10) gradually decreases from an end close to the first end (501) to an end close to the second end (502).

9. The induction cooker based on air power cooling according to claim 6, characterized in that: There is a first interval between the guide island (10) and the first guide plate (503), and a second interval between the guide island (10) and the second guide plate (504); and the first interval and the second interval gradually decrease from an end close to the first end (501) to an end close to the second end (502).

10. The induction cooker based on air power cooling according to any one of claims 1 to 9, characterized in that: The body shell (2) is provided with a stepped portion (201) protruding outward, the stepped portion (201) having a bottom surface arranged downward, and the air inlet (7) and the air outlet (8) are both arranged on the bottom surface of the stepped portion (201).

11. The induction cooker based on air power cooling according to any one of claims 1 to 9, 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 electric 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) is connected to the first end (501) through a pore.

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