A flow channel heat dissipation structure for an induction cooker

Abstract

The present application belongs to the technical field of household appliances, and discloses an induction cooker flow channel heat dissipation structure, comprising an upper cover, a body shell, a heating coil, a heat dissipation fan and a main electric control board, wherein the upper cover and the body shell form an equipment cavity, a coil cavity and a buffer cavity, the main electric control board is arranged in the equipment cavity, the heating coil and the heat dissipation fan are arranged in the coil cavity, the equipment cavity and the coil cavity are connected through a connecting port, and the buffer cavity is isolated from the equipment cavity and the coil cavity respectively; a plurality of guide platforms spaced apart from each other are arranged in the coil cavity, and a narrow gap narrow in the middle and wide at both ends is formed between any adjacent guide platforms, and the narrow gaps are connected to each other to form a multi-path flow channel; the heat dissipation fan is located downstream of the multi-path flow channel, and is used to discharge air from the coil cavity into the buffer cavity; an air inlet is provided on the cavity wall of the equipment cavity, and an exhaust port is provided on the cavity wall of the buffer cavity; while ensuring the heat dissipation effect, problems caused by an excessively large air inlet opening are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a flow channel heat dissipation structure of an induction cooker. Background Art

[0002] As a modern kitchen appliance, the induction cooker operates based on electromagnetic induction. By generating an alternating magnetic field, it creates eddy currents in the cookware, generating heat. Although the induction cooker itself does not directly burn fuel, its internal electronic components, such as the power tubes, bridge rectifiers, and heating coils, generate significant Joule heating during operation. Simultaneously, the high temperature of the cookware transfers heat back into the induction cooker cavity through conduction and radiation. This accumulated heat causes the cavity to heat up. If it is not dissipated promptly and effectively, it will seriously affect the proper operation and reliability of the internal electronic components and even shorten the lifespan of the induction cooker.

[0003] To address the heat dissipation problem within induction cookers, existing technologies typically employ forced convection. This involves drawing in cool air from the outside through a cooling fan and directing it through designed air ducts to the main heating components (such as the power tubes, bridge rectifiers and their heat sinks) and heating coils, using this airflow to remove heat. However, to ensure sufficient airflow, this cooling method typically requires large air intake openings in the induction cooker's casing. While these large openings provide cooling airflow, they also introduce new challenges. Debris from the external environment, such as oil, dust, and even insects, can easily enter the induction cooker's internal cavity through these large openings. Once inside, these debris can adhere to electronic components on the printed circuit board (PCB), causing short circuits or even direct damage, thereby reducing the overall performance and lifespan of the induction cooker.

[0004] In view of the above problems, the existing technology is in urgent need of improvement. Summary of the Invention

[0005] The purpose of the present application is to provide an induction cooker flow channel heat dissipation structure that can ensure the heat dissipation effect while avoiding the problems caused by the air inlet opening being too large.

[0006] The present application provides an induction cooker flow channel heat dissipation structure, comprising an upper cover, a body shell, a heating coil, a heat dissipation fan, and a main electric control board. The upper cover and the body shell form a main inner cavity; the main inner cavity comprises an equipment cavity, a coil cavity, and a buffer cavity; the main electric control board is disposed in the equipment cavity, the heating coil and the heat dissipation fan are disposed in the coil cavity, the equipment cavity and the coil cavity are connected via a communication port, and the buffer cavity is isolated from the equipment cavity and the coil cavity, respectively.

[0007] A plurality of guide platforms spaced apart from each other are provided in the coil cavity, and a narrow gap with a narrow middle and wide ends is formed between any adjacent guide platforms, and the narrow gaps are interconnected to form a multi-path flow channel; the cooling fan is located downstream of the multi-path flow channel, and the outlet of the cooling fan is connected to the buffer cavity and is used to discharge air from the coil cavity into the buffer cavity; the cavity wall of the equipment cavity is provided with an air inlet, and the cavity wall of the buffer cavity is provided with an exhaust port.

[0008] Preferably, the communication port is located on the upstream inlet side of the multi-path flow channel.

[0009] Preferably, the heating coil is located above the heat dissipation fan, and the heat dissipation fan is a blower-type fan; the air intake of the heat dissipation fan is arranged upward, and the air outlet is connected to the buffer chamber.

[0010] Preferably, the cross-sectional outer contour of the guide platform is elliptical, circular or streamlined.

[0011] Preferably, the equipment cavity and the coil cavity are separated by an arc-shaped baffle, and the communication port is provided on the arc-shaped baffle.

[0012] Preferably, an air inlet is provided on the wall of the coil cavity.

[0013] Preferably, the apertures of the air inlet and the exhaust port are both no larger than 2 mm, and a plurality of the air inlet and the exhaust port are provided.

[0014] Preferably, the air inlet and the air outlet are both opened on the vertical side wall of the fuselage shell.

[0015] Preferably, the exhaust port is opened on a vertical side wall except the front side wall.

[0016] Preferably, a radiator with cooling fins is provided on the main electric control board, at least part of the air inlets face the radiator, and the cooling fins of the radiator extend along the air inlet direction of the corresponding air inlets.

[0017] Beneficial effect: The induction cooker flow channel heat dissipation structure provided in the present application effectively blocks the entry of external debris while ensuring the heat dissipation effect by dividing the cavity, setting a multi-path flow channel composed of a narrow gap in the middle and wide at both ends, and adopting small-aperture air inlet and exhaust ports; thereby, it can ensure the heat dissipation effect while avoiding the problems caused by the air inlet opening being too large. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded view of the induction cooker flow channel heat dissipation structure provided in an embodiment of the present application.

[0019] Figure 2This is a diagram of the internal structure of the induction cooker flow channel heat dissipation structure provided in an embodiment of the present application.

[0020] Figure 3 This is a top view of the body casing and cooling fan.

[0021] Figure 4 This is a three-dimensional diagram of the body shell and cooling fan.

[0022] Figure 5 This is a comparison diagram of the distributed temperature in the thermal-fluid coupling simulation results.

[0023] Figure 6 This is a comparison chart of the temperature rise curves in the actual test results.

[0024] Explanation of reference numbers: 1. Upper cover; 2. Body shell; 201. Arc-shaped baffle; 3. Heating coil; 4. Cooling fan; 5. Main electric control board; 6. Main inner cavity; 601. Equipment cavity; 602. Coil cavity; 603. Buffer cavity; 604. Connecting port; 605. Operating cavity; 7. Air guide platform; 701. Slit; 8. Air inlet; 9. Exhaust port; 10. Operation panel; 11. Radiator. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] refer to Figures 1-4The present application provides an induction cooker flow channel heat dissipation structure, comprising an upper cover 1, a body shell 2, a heating coil 3, a cooling fan 4, and a main electric control board 5. The upper cover 1 and the body shell 2 enclose a main inner cavity 6; the main inner cavity 6 includes an equipment cavity 601, a coil cavity 602, and a buffer cavity 603. The main electric control board 5 is disposed in the equipment cavity 601, the heating coil 3 and the cooling fan 4 are disposed in the coil cavity 602, the equipment cavity 601 and the coil cavity 602 are connected via a connecting port 604, and the buffer cavity 603 is isolated from the equipment cavity 601 and the coil cavity 602.

[0028] A plurality of guide platforms 7 spaced apart from each other are provided in the coil cavity 602, and a narrow gap 701 with a narrow middle and wide ends is formed between any adjacent guide platforms 7, and the narrow gaps 701 are interconnected to form a multi-path flow channel; the cooling fan 4 is located downstream of the multi-path flow channel, and the outlet of the cooling fan 4 is connected to the buffer cavity 603 and is used to discharge air from the coil cavity 602 into the buffer cavity 603; an air inlet 8 is provided on the cavity wall of the equipment cavity 601, and an exhaust port 9 is provided on the cavity wall of the buffer cavity 603.

[0029] Among them, it means that the interior of the induction cooker can be divided into different areas such as the equipment cavity 601, the coil cavity 602 and the buffer cavity 603 through structural separation, which can be achieved by using structures such as partitions and cavity walls. For example, a separation structure is set inside the injection-molded plastic shell, which is mainly to achieve functional division of internal components and directional organization of airflow.

[0030] The guide platform 7 refers to a raised structure provided in the coil cavity 602 for guiding the airflow. It can be in various shapes such as a columnar or plate-like shape, for example, a column with an elliptical, circular or streamlined cross section. The main purpose is to optimize the airflow path in the coil cavity 602. The multi-path flow channel refers to a plurality of interconnected channels formed between the guide platforms 7 for the airflow to pass through. Any adjacent guide platforms 7 form a narrow gap 701 with a narrow middle and wide ends. The main purpose is to increase the airflow velocity and improve the heat exchange efficiency. The heating coil 3 is provided at the upper part of the coil cavity 602. Therefore, the guide platform 7 is partially or completely provided below the coil cavity 602, which can increase the airflow velocity below the heating coil 3, thereby improving the heat dissipation effect of the heating coil 3.

[0031] Among them, the communication port 604 is an opening connecting the device cavity 601 and the coil cavity 602, which can be set on the partition separating the two cavities, for example, an arc-shaped opening is set, which is mainly to allow airflow from the device cavity 601 to enter the coil cavity 602.

[0032] Among them, the air inlet 8 and the exhaust port 9 are holes opened on the cavity wall for external air to enter or internal air to be discharged. For example, a series of small-diameter round holes, square holes or holes of other shapes are opened. The main purpose is to achieve internal and external air exchange and block external debris.

[0033] During operation, low-temperature external air enters the main inner cavity 6 of the induction cooker through the air inlet 8 of the equipment cavity 601. After entering the equipment cavity 601, the airflow flows through the area where the main electronic control board 5 is located, which is initially cooled. The airflow then enters the coil cavity 602 through the connecting port 604. Inside the coil cavity 602, the airflow encounters multiple guide platforms 7 spaced apart from each other. These guide platforms 7 guide the airflow into the narrow gap 701 formed by them, which is narrow in the middle and wide at both ends. When the airflow passes through these narrow flow channels, the flow rate increases, thereby enhancing the convective heat transfer efficiency of the equipment in the coil cavity 602. The cooling fan 4 located downstream of the multi-path flow channel generates suction, drawing the air flowing through the multi-path flow channel out of the coil cavity 602. The drawn air enters the buffer cavity 603, which is isolated from the coil cavity 602 and the equipment cavity 601, through the fan outlet. In the buffer cavity 603, since the cross-section of the airflow channel increases from the outlet of the cooling fan 4 to the buffer cavity 603 (the lateral dimension of the buffer cavity 603 is larger than the lateral dimension of the outlet of the cooling fan 4, and the lateral dimension refers to the cross-sectional dimension perpendicular to the airflow direction), the airflow velocity decreases. Finally, the hot air is discharged to the outside of the induction cooker through the exhaust port 9 on the wall of the buffer cavity 603. The design of the buffer cavity 603 can effectively reduce the speed at which hot air flows out of the exhaust port 9 (note, it does not reduce the ventilation volume). On the one hand, it can reduce the exhaust noise, and on the other hand, it can avoid the danger of hot air being ejected too far (such as scalding the user). Through this specific cavity division, flow channel design and airflow organization, even if the air inlet 8 and the exhaust port 9 adopt smaller apertures, sufficient heat dissipation can be achieved through internal forced convection and optimized heat exchange paths.

[0034] Through the above-mentioned solution, the present application effectively solves the prior art problem of excessively large air inlet openings, which allows debris such as oil, insects, and other debris to enter the induction cooker's internal cavity, thereby improving the reliability and service life of the induction cooker. Furthermore, by functionally dividing the main internal cavity 6 and optimizing the airflow path within the coil cavity 602, effective forced convection heat dissipation is achieved, ensuring the operating temperature of the induction cooker's internal heating components. Furthermore, the buffer cavity design helps reduce exhaust noise and prevents direct, high-speed ejection of hot air, improving safety.

[0035] Preferably, the communication port 604 is located at the upstream inlet side of the multi-path flow channel (eg Figure 3-Figure 4 After the air flows from the device cavity 601 into the coil cavity 602, it directly enters the multi-path flow channel for acceleration, thereby more effectively improving the heat dissipation effect.

[0036] In some preferred embodiments, see Figure 2 The heating coil 3 is located above the cooling fan 4, which is a blower-type fan; the air intake of the cooling fan 4 is set upward, and the air outlet is connected to the buffer chamber 603.

[0037] A blower fan refers to a fan that generates airflow through the rotation of an impeller, capable of generating relatively high static pressure. This can be achieved using a centrifugal fan or an axial flow fan. An upwardly facing air intake means that the fan's opening for inhaling air points toward the upper portion of the induction cooker. The air outlet is connected to the buffer chamber 603, meaning that a passage for air flow exists between the fan's exhaust outlet and the buffer chamber 603.

[0038] This solution arranges the heating coil 3 above the cooling fan 4 and directs the air intake of the cooling fan 4 upward. During the fan suction process, part of the airflow will pass through the heating coil 3 from top to bottom, allowing the fan to absorb the hot air near the heating coil 3. The cooling fan 4 adopts a blower-type fan, and the high static pressure generated by it can push the inhaled air into the buffer cavity 603 and eventually discharge it through the exhaust port 9. This layout and the choice of fan type optimize the airflow organization in the coil cavity 602, forming a heat dissipation path for the heating coil 3, ensuring that the heat can be carried away, and improving the exhaust efficiency of the hot air, thereby improving the heat dissipation effect on the heating coil 3 and ensuring the operation of the internal components of the induction cooker.

[0039] Optionally, the cross-sectional outer contour of the guide platform 7 may be, but is not limited to, elliptical, circular or streamlined; for example Figure 3 In the middle, it is an oval.

[0040] Specifically, the outer contour of the cross section of the guide platform 7 is defined as an ellipse, a circle or a streamlined shape. These shapes all have the characteristic of smooth surface transitions, and are intended to optimize the boundary layer characteristics of the airflow when it flows through the guide platform 7. For example, a circle and an ellipse are common closed contours with continuous curvature, which can reduce the impact of the airflow on the windward side and the separation on the leeward side. The streamlined shape is a shape designed to reduce fluid resistance. The front part is rounded, and the part located on the rear side of the rounded front part gradually narrows backwards, which can guide the airflow to flow smoothly along the surface and reduce the generation of vortices and wakes. The choice of these shapes directly affects the interaction between the airflow and the surface of the guide platform 7, and is the basis for achieving low-resistance airflow organization.

[0041] It is precisely because the cross-sectional outer contour of the guide platform 7 is designed to be elliptical, circular or streamlined, and these shapes with good fluid dynamics characteristics can enable the airflow to maintain a smoother and more stable flow state when flowing through the surface of the guide platform 7. This effectively reduces the possibility of airflow separation on the surface of the guide platform 7, reduces the generation of vortices, and thus reduces the flow resistance of the airflow in the narrow channel. The reduction in airflow resistance enables the cooling fan 4 to effectively improve the efficiency of pushing air through the entire multi-path channel system, thereby improving the flow rate and flow rate of the airflow. At the same time, the smooth flow also helps the airflow to be evenly distributed in each channel branch, avoiding the problem of heat dissipation dead corners caused by restricted airflow in some areas. In this way, the specific shape of the guide platform 7 is combined with the multi-path channel structure to jointly optimize the airflow organization in the coil cavity 602, so that the airflow can flow smoothly and evenly through the heating components, thereby effectively taking away heat and enhancing the heat dissipation effect inside the induction cooker. This optimization of the shape of the guide platform 7 is an improvement on the airflow characteristics based on the existing multi-path flow channel heat dissipation structure. It overcomes the problems of limited airflow organization and heat dissipation efficiency caused by the non-optimized shape of the guide platform 7, and further improves the overall heat dissipation performance.

[0042] The guide platform 7 can be integrally formed with the body shell 2 through an injection molding process, or can be independently processed and installed in the body shell 2 in a detachable or non-detachable manner.

[0043] When the cross-sectional outer contour of the guide platform 7 is elliptical, its major axis can be roughly parallel to the main airflow direction to further optimize streamlines. When the cross-sectional outer contour of the guide platform 7 is streamlined, a NACA airfoil or other similar low-drag profile can be used, with its tip pointing downstream to reduce wake drag.

[0044] In some embodiments, see Figure 2-Figure 3 The device cavity 601 and the coil cavity 602 are separated by an arc-shaped baffle 201 , and the communication port 604 is provided on the arc-shaped baffle 201 .

[0045] The arc-shaped baffle 201 refers to a baffle structure with a curved profile, which can be realized in the shape of an arc, a parabola or other smooth curves. The communication port 604 can be realized in the form of a circular hole, a rectangular hole, a slit or a hole array.

[0046] This solution aims to optimize the flow state of the airflow from the device cavity 601 into the coil cavity 602 by introducing this partition structure and the setting method of the connecting port 604, improve the efficiency and uniformity of the airflow introduction, and thus enhance the overall heat dissipation effect. Specifically, the device cavity 601 and the coil cavity 602 are separated by an arc-shaped baffle 201. Compared with a straight line or right-angle separation, this arc-shaped structure can provide a smoother transition surface, which helps to guide the airflow to flow smoothly from the device cavity 601 to the coil cavity 602, reduce the resistance and turbulence of the airflow in the separation area, and enable the airflow to be more effectively introduced into the coil cavity 602. Setting the connecting port 604 between the device cavity 601 and the coil cavity 602 on this arc-shaped baffle 201 with a diverting function can better match the shape of the arc-shaped baffle 201 and further optimize the path of the airflow entering the coil cavity 602. As airflow is guided by the curved baffle 201, it enters the coil cavity 602 through the connecting port 604 provided thereon. This allows for a more concentrated and uniform flow into the multi-path flow channel within the coil cavity 602, reducing airflow loss and energy dissipation, improving the efficiency and uniformity of airflow entering the coil cavity 602, and laying the foundation for subsequent efficient heat dissipation in the multi-path flow channel, thereby improving the performance of the entire heat dissipation structure. This structure, combined with the overall layout of the device cavity 601, coil cavity 602, connecting port 604, multi-path flow channel, and cooling fan 4 in the induction cooker flow channel heat dissipation structure, works together to optimize the process of airflow entering the coil cavity 602 from the device cavity 601, thereby improving overall heat dissipation performance.

[0047] In some embodiments, see Figure 4 An air inlet 8 is provided on the wall of the coil cavity 602 .

[0048] By providing an air inlet 8 in the wall of coil cavity 602, coil cavity 602 can directly receive cooler external air. This cool air, combined with the air flowing from device cavity 601, forms an independent heat dissipation path, more effectively removing heat generated by the heating elements (primarily heating coil 3) within coil cavity 602, thereby reducing the temperature of coil cavity 602. This design significantly enhances the heat dissipation effect on the primary heat source, such as heating coil 3, and improves overall heat dissipation efficiency.

[0049] Preferably, the apertures of the air inlet 8 and the air outlet 9 are no larger than 2 mm, and a plurality of air inlet 8 and air outlet 9 are provided.

[0050] The aperture refers to the maximum size of a single opening of the air inlet 8 or the exhaust port 9, such as the diameter of a circular hole or the diagonal length of a square hole. An aperture of no more than 2 mm means that the maximum size of a single opening is limited to 2 mm. This can be achieved by methods such as mold integration, stamping, drilling, or laser drilling. Being provided with multiple openings means that the air inlet 8 or the exhaust port 9 is not just one opening, but consists of two or more independent openings. These multiple openings can be achieved by array distribution, dispersed distribution, or concentrated distribution in a specific area.

[0051] External air enters the device cavity 601 through multiple air inlets 8 on the cavity wall. The aperture of these air inlets 8 is limited to no more than 2 mm, effectively filtering out larger external debris. Similarly, the aperture of the exhaust port 9 is also limited to no more than 2 mm, which helps to create a certain back pressure, optimizes the airflow organization within the cavity, and further prevents external debris from entering the cavity through the exhaust port 9. By providing multiple air inlets 8 and exhaust ports 9 with an aperture of no more than 2 mm, external debris is effectively blocked while ensuring that the total air intake and exhaust area is sufficient to meet the ventilation volume required for heat dissipation. This design ensures that the air entering the induction cooker is cleaner, reducing the accumulation of oil, dust, insects, and other debris on the main electronic control board 5 and its electronic components such as power tubes and bridge rectifiers, thereby reducing the risk of short circuits, corrosion, or component damage. By optimizing the design of the air inlets and outlets, the entire heat dissipation structure works in conjunction with the internal flow channel and fan to ensure the stable operation of the electronic components within the induction cooker and the overall service life of the device.

[0052] In some embodiments, see Figure 3 The air inlet 8 and the air outlet 9 are both opened on the vertical side wall of the fuselage shell 2.

[0053] The vertical side wall refers to the outer surface of the body shell 2 perpendicular to the placement plane of the induction cooker, which may include a front side wall, a rear side wall, and left and right side walls.

[0054] By positioning both the air inlet 8 and the air outlet 9 on the vertical sidewalls of the housing 2, air enters and exits from the sides, effectively preventing the problem of bottom-intake air easily drawing in dust and liquid from the floor / tabletop, while also avoiding the potential for liquid ingress and aesthetic impact of top-opening air. This positioning, combined with the internal flow channel structure, optimizes overall heat dissipation efficiency and dust and dirt resistance.

[0055] Furthermore, the exhaust port 9 is opened on the vertical side wall except the front side wall.

[0056] The front side wall refers to the vertical side wall on the side close to the user when in use, such as Figure 3The vertical side walls other than the front side wall refer to the vertical side walls excluding the front side wall, which may include the rear side wall, the left side wall and the right side wall.

[0057] By locating the exhaust vent 9 away from the front sidewall, the exhausted hot air flows away from the user's operating area. Furthermore, since the front sidewall primarily houses the operating panel, avoiding the exhaust vent 9 here improves the structural layout of the front sidewall, reducing spatial conflicts and design complexity between the exhaust vent 9 and components such as the operating panel 10. This defined location of the exhaust vent 9, combined with the overall solution of exhausting air through the vertical sidewalls, not only achieves heat dissipation, but also improves the user experience and optimizes the product's structural design.

[0058] In some embodiments, see Figure 1 and Figure 2 A radiator 11 with cooling fins is provided on the main electric control board 5 , at least part of the air inlet 8 faces the radiator 11 , and the cooling fins of the radiator 11 extend along the air inlet direction of the corresponding air inlet 8 .

[0059] Among them, the radiator 11 is a device for enhancing the transfer of heat from the heating element to the surrounding medium (usually air). It can be made of metal materials (such as aluminum, copper) and improve the heat dissipation efficiency by increasing the surface area. The heat dissipation fins are thin-sheet structures extending from the base of the radiator 11, which are used to further increase the heat dissipation surface area. They can take various forms such as plate-shaped, needle-shaped, and wavy. Directly opposite means that the position of the air inlet 8 is spatially opposite to the radiator 11, so that the airflow entering from the air inlet 8 can flow directly or mainly to the radiator 11. Extending along the air inlet direction means that the main direction of the heat dissipation fins is basically consistent with the flow direction of the air entering from the corresponding air inlet 8, so that the airflow can smoothly pass through the channels between the fins.

[0060] Because at least part of the air inlet 8 is positioned directly opposite the radiator 11, the low-temperature external air entering through the small-aperture air inlet can be effectively guided and blown directly onto the surface of the radiator 11 where heat dissipation is required, thereby improving the efficiency of airflow utilization and avoiding disordered flow and energy loss within the cavity. At the same time, because the cooling fins of the radiator 11 are configured to extend along the air inlet direction of the corresponding air inlet 8, the airflow is ensured to flow smoothly through the channels between the fins, forming effective forced convection, maximizing the contact time and area between the airflow and the fin surface, and thus more effectively removing heat. This structural configuration allows for maximum utilization of the limited airflow, even when the aperture of the air inlet 8 is small and the overall air intake is limited, to quickly remove heat from the key heating components on the main electrical control board 5, ensuring stable operation of the equipment.

[0061] Furthermore, the main inner cavity 6 further includes an operating cavity 605 , which is isolated from the equipment cavity 601 , the coil cavity 602 and the buffer cavity 603 , and an operating panel 10 is provided in the operating cavity 605 .

[0062] The operating chamber 605 is an independent space demarcated within the main inner cavity 6 of the induction cooker, and is used to accommodate the operating panel 10. Isolation refers to the presence of a physical barrier between the operating chamber 605 and the equipment chamber 601, coil chamber 602, and buffer chamber 603, such as a complete or partial physical separation through a partition or cavity wall, to limit or prevent the flow or transfer of air, moisture, heat, or debris between these cavities.

[0063] The operating panel 10 is located within this isolated operating cavity 605, so the ambient temperature is relatively low and it is not easily contaminated by internal debris. This isolation structure ensures that the operating panel 10 and its internal electronic components operate in a relatively stable and clean environment, avoiding performance degradation or damage caused by high temperatures, as well as key failure or display anomalies caused by debris. By adding isolation protection to the operating panel area on top of the basic heat dissipation structure, this solution effectively solves the problem of the operating panel 10 being susceptible to internal environmental influences, improving the overall reliability and user experience of the induction cooker.

[0064] Below, simulation software is used to conduct thermal coupling simulation of the present application and the traditional direct-blowing heat dissipation structure. Both use the same heat dissipation fan 4 (the main difference between the traditional direct-blowing heat dissipation structure and the present application is that there is no guide platform and buffer chamber, and the outlet of the heat dissipation fan is aimed at the radiator; when working, the heat dissipation fan sucks the air in the equipment cavity and blows it toward the radiator. The cavity walls of the equipment cavity and the coil cavity are provided with air inlets for sucking in external cold air. The wall of the equipment cavity on the side of the radiator away from the heat dissipation fan is provided with an exhaust port for discharging hot air). Except for the different three-dimensional models, the other boundary conditions of the two are the same during simulation. Simulation results are shown in Figure 5In the figure, A represents the traditional direct-blowing heat dissipation structure, and B represents the structure of the present application. It can be seen from the figure that the present application can effectively guide the heat on the radiator 11 and the heating coil 3 to the heat dissipation fan 4, thereby greatly reducing the temperature of the radiator 11 and the heating coil 3 (in the figure, the maximum temperature at the radiator 11 of A is close to 100°C, while the maximum temperature at the radiator 11 of B is about 80°C). The maximum temperature in the entire structure of the present application is 40°C lower than the maximum temperature of the traditional direct-blowing heat dissipation structure. In addition, it can be seen from the figure that in the structure of the present application, the temperature of the high-temperature gas blown out from the outlet of the heat dissipation fan 4 will decrease after entering the buffer cavity 603. This is because the high-temperature gas will expand after entering the buffer cavity 603, resulting in cooling, so that the temperature of the air discharged from the exhaust port 9 is lower than the temperature at the outlet of the heat dissipation fan 4, which is better than the method of directly discharging the hot air out of the induction cooker to avoid high-speed high-temperature airflow from burning the user.

[0065] In addition, through physical testing, the temperature rise trend of the present application and the traditional direct-blowing heat dissipation structure was compared. The temperature test was carried out by attaching thermocouples to the heating coil 3, the MOS pins (the pins of the MOS tube on the main electronic control board 5) and the radiator 11. The temperature rise trend within 600s working time was tested. The temperature rise curve comparison diagram in the test results is shown in FIG. Figure 6 In the figure, the A coil curve and the B coil curve are the temperature rise curves of the heating coil 3 in the traditional direct-blowing heat dissipation structure and the structure of the present application, respectively; the A radiator curve and the B radiator curve are the temperature rise curves of the radiator 11 in the traditional direct-blowing heat dissipation structure and the structure of the present application, respectively; the AMOS curve and the B MOS curve are the temperature rise curves of the MOS pin in the traditional direct-blowing heat dissipation structure and the structure of the present application, respectively. It can be seen from the figure that compared with direct-blowing heat dissipation, the temperature rise of the present application is more gradual. Under the same working time, the temperatures of the heating coil 3, the radiator 11 and the MOS pin are all reduced by at least 20°C, and the heat accumulation phenomenon of the coil can be effectively alleviated.

[0066] 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 flow channel heat dissipation structure, comprising an upper cover (1), a body shell (2), a heating coil (3), a heat dissipation fan (4) and a main electric control board (5), wherein the upper cover (1) and the body shell (2) enclose a main inner cavity (6); characterized in that: The main inner cavity (6) includes an equipment cavity (601), a coil cavity (602) and a buffer cavity (603); the main electric control board (5) is arranged in the equipment cavity (601); the heating coil (3) and the cooling fan (4) are arranged in the coil cavity (602); the equipment cavity (601) and the coil cavity (602) are connected via a communication port (604); and the buffer cavity (603) is isolated from the equipment cavity (601) and the coil cavity (602). A plurality of guide platforms (7) spaced apart from each other are provided in the coil cavity (602), and a narrow gap (701) narrow in the middle and wide at both ends is formed between any adjacent guide platforms (7), and the narrow gaps (701) are interconnected to form a multi-path flow channel; the cooling fan (4) is located downstream of the multi-path flow channel, and the outlet of the cooling fan (4) is connected to the buffer cavity (603) and is used to discharge air from the coil cavity (602) into the buffer cavity (603); the cavity wall of the equipment cavity (601) is provided with an air inlet (8), and the cavity wall of the buffer cavity (603) is provided with an exhaust port (9); The communication port (604) is located at the upstream inlet side of the multi-path flow channel; The cross-sectional outer contour of the guide platform (7) is elliptical, circular or streamlined; The device cavity (601) and the coil cavity (602) are separated by an arc-shaped baffle (201), and the communication port (604) is provided on the arc-shaped baffle (201).

2. The induction cooker flow channel heat dissipation structure according to claim 1, characterized in that: The heating coil (3) is located above the cooling fan (4), and the cooling fan (4) is a blower-type fan; the air intake of the cooling fan (4) is arranged upward, and the air outlet is connected to the buffer chamber (603).

3. The induction cooker flow channel heat dissipation structure according to claim 1, characterized in that: An air inlet (8) is provided on the wall of the coil cavity (602).

4. The electromagnetic oven flow channel heat dissipation structure according to any one of claims 1 to 3, characterized in that: The apertures of the air inlet (8) and the air outlet (9) are both no larger than 2 mm, and a plurality of the air inlet (8) and the air outlet (9) are provided.

5. The electromagnetic oven flow channel heat dissipation structure according to any one of claims 1 to 3, characterized in that: The air inlet (8) and the air outlet (9) are both opened on the vertical side wall of the fuselage shell (2).

6. The induction cooker flow channel heat dissipation structure according to claim 5, characterized in that: The exhaust port (9) is opened on the vertical side wall except the front side wall.

7. The induction cooker flow channel heat dissipation structure according to claim 4, characterized in that: A radiator (11) having radiating fins is provided on the main electric control board (5), at least part of the air inlet (8) faces the radiator (11), and the radiating fins of the radiator (11) extend along the air inlet direction of the corresponding air inlet (8).

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