Concave structure and its application in induction cookers

Abstract

This utility model discloses a concave structure and an induction cooker using it, comprising: a cooker body, a panel, an electric heating element, and multiple temperature sensors; the center of the panel is bent towards the inside of the cooker body, forming a concave surface for supporting cookware; at least one of the multiple temperature sensors is located in the center of the panel, and at least one of the multiple temperature sensors is located on the side of the panel. By setting temperature sensors in the center and on the side of the panel, the temperature monitoring accuracy for different types of cookware, especially concave-bottomed cookware, is significantly improved. The temperature sensor located in the center of the panel can accurately monitor the temperature at the center of the bottom of the cookware, while the temperature sensor on the side effectively supplements the temperature monitoring of the edge area of ​​the cookware, ensuring that temperature changes across the entire bottom of the cookware are captured in a timely manner. This multi-point monitoring layout allows the induction cooker to more comprehensively and accurately reflect the actual cooking temperature, thereby achieving more timely and accurate overheat protection.

Description

Technical Field

[0001] This utility model relates to the field of induction cookers, and in particular to an induction cooker with a concave structure and the application thereof. Background Technology

[0002] Traditional induction cooker overheat protection systems typically only have an overheat protection device in the center of the control panel. This design has limitations when using flat-bottomed or concave cookware. A single overheat protection device in the center cannot comprehensively monitor the temperature of the edge area of ​​concave cookware, resulting in inaccurate temperature monitoring, delayed overheat protection, and potential safety hazards. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a concave structure capable of comprehensively monitoring the temperature of concave cookware.

[0004] This utility model also proposes an induction cooker having the above-mentioned concave structure.

[0005] According to a first aspect of the present invention, a concave structure includes: a furnace body, a panel, an electric heating element, and a plurality of temperature sensing elements; the panel is disposed in the furnace body and is used to support a cookware, the middle portion of the panel is bent toward the inside of the furnace body to form a concave surface for supporting the cookware; the electric heating element is disposed in the furnace body and is used to generate heat; the plurality of temperature sensing elements are disposed in the furnace body and located between the panel and the furnace body, the temperature sensing elements are used to detect the temperature of the panel, at least one of the plurality of temperature sensing elements is located in the middle portion of the panel, and at least one of the plurality of temperature sensing elements is located on the side portion of the panel.

[0006] The concave structure according to this utility model embodiment has at least the following beneficial effects: by setting temperature sensors in the center and sides of the panel respectively, the temperature monitoring accuracy for different types of cookware, especially concave-bottomed cookware, is significantly improved. The temperature sensor located in the center of the panel can accurately monitor the temperature at the center of the bottom of the cookware, while the temperature sensor on the side effectively supplements the temperature monitoring of the edge area of ​​the cookware, ensuring that temperature changes across the entire bottom of the cookware can be captured in a timely manner. This multi-point monitoring layout allows the induction cooker to more comprehensively and accurately reflect the actual cooking temperature, providing more reliable temperature data for the control circuit, thereby achieving more timely and accurate overheat protection. For concave-bottomed cookware, the role of the side temperature sensor is particularly crucial. It can detect heat accumulation that may occur at the edge of the cookware due to changes in curvature, avoiding damage to the cookware or causing safety accidents due to local overheating, greatly improving the safety of the induction cooker and its adaptability to diverse cookware, and enhancing the user experience.

[0007] According to some embodiments of the present invention, the temperature sensing element is configured as an NTC thermistor, and the temperature sensing element is in contact with the bottom of the panel.

[0008] According to some embodiments of the present invention, the temperature sensing element is electrically connected to a control circuit, the control circuit is electrically connected to the heating element, and the control circuit can control the heating element to turn on or off according to the detection result of the temperature sensing element.

[0009] According to some embodiments of the present invention, the heating assembly includes a coil disk for loading a coil; at least one of the plurality of temperature sensing elements is disposed in the middle of the coil disk, and at least one of the plurality of temperature sensing elements is disposed on the side of the coil disk.

[0010] According to some embodiments of this utility model, a mounting hole is provided in the middle of the coil disk, and the temperature sensing element is installed in the mounting hole.

[0011] According to some embodiments of the present invention, the side of the coil disk is provided with a plurality of hollow areas, each of the hollow areas is distributed around the middle part of the coil disk, and at least one of the hollow areas contains the temperature sensing element.

[0012] According to some embodiments of the present invention, the coil is provided with a connecting frame, the connecting frame extends into the hollow area, and the temperature sensing element is installed on the connecting frame.

[0013] According to some embodiments of this utility model, the middle part of the coil is bent toward the bottom of the furnace body, and the bending amplitude of the coil is the same as that of the panel.

[0014] According to some embodiments of the present invention, the temperature sensing element located in the middle of the panel and the temperature sensing element located on the side of the panel are at the same distance relative to the panel.

[0015] An induction cooker according to a second aspect of the present invention includes a concave structure according to the first aspect of the present invention described above.

[0016] The induction cooker according to this utility model embodiment has at least the following beneficial effects: by setting temperature sensors in the center and sides of the panel, the temperature monitoring accuracy for different types of cookware, especially concave-bottomed cookware, is significantly improved. The temperature sensor located in the center of the panel can accurately monitor the temperature at the center of the bottom of the cookware, while the temperature sensor on the side effectively supplements the temperature monitoring of the edge area of ​​the cookware, ensuring that temperature changes across the entire bottom of the cookware are captured in a timely manner. This multi-point monitoring layout allows the induction cooker to more comprehensively and accurately reflect the actual cooking temperature, providing more reliable temperature data for the control circuit, thereby achieving more timely and accurate overheat protection. For concave-bottomed cookware, the role of the side temperature sensor is particularly crucial. It can detect heat accumulation that may occur at the edge of the cookware due to changes in curvature, avoiding damage to the cookware or causing safety accidents due to localized overheating, greatly improving the safety of the induction cooker and its adaptability to diverse cookware, and enhancing the user experience.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the concave structure of an embodiment of the present utility model; Figure 2 for Figure 1 A schematic diagram of the interior of the concave structure is shown; Figure 3 for Figure 1 A schematic diagram of a coil disk with a concave structure is shown.

[0019] Reference numerals: Furnace body 100; Panel 200; Coil coil 300; Hollowed-out area 330; Mounting hole 350; Temperature sensing element 500; Connecting bracket 550; Detailed Implementation The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Reference Figure 1 A concave structure includes: a furnace body 100, a panel 200, an electric heating element, and multiple temperature sensing elements 500; the panel 200 is disposed within the furnace body 100 and serves to support cookware, with its central portion bent inwards towards the furnace body 100 to form a concave surface for supporting the cookware; the electric heating element is disposed within the furnace body 100 and serves to generate heat; multiple temperature sensing elements 500 are disposed within the furnace body 100 and located between the panel 200 and the furnace body 100, and are used to detect the temperature of the panel 200, with at least one of the multiple temperature sensing elements 500 located in the central portion of the panel 200 and at least one of the multiple temperature sensing elements 500 located on the side portion of the panel 200. By distributing temperature sensing elements 500 in the central and side portions of the panel 200, the accuracy of temperature monitoring for different types of cookware, especially concave-bottomed cookware, is significantly improved. The temperature sensor 500 located in the center of the panel 200 accurately monitors the temperature at the center of the cookware's bottom, while the side temperature sensors 500 effectively supplement the temperature monitoring of the cookware's edge area, ensuring that temperature changes across the entire bottom of the cookware are captured in a timely manner. This multi-point monitoring layout allows the induction cooker to more comprehensively and accurately reflect the actual cooking temperature, providing more reliable temperature data for the control circuit, thereby achieving more timely and accurate overheat protection. For concave-bottomed cookware, the side temperature sensor 500 plays a particularly crucial role, as it can detect heat accumulation that may occur due to changes in the curvature of the cookware's edge, preventing damage to the cookware or safety accidents caused by localized overheating. This greatly improves the safety of the induction cooker and its adaptability to various cookware types, enhancing the user experience.

[0024] Specifically, panel 200 is a microcrystalline plate used to reflect the heat generated by coil 300 upwards to the cookware, thereby improving thermal efficiency.

[0025] In some embodiments, reference is made to Figure 2 The temperature sensor 500 is an NTC thermistor, which is in contact with the bottom of the panel 200. Using an NTC thermistor in direct contact with the bottom of the panel 200 ensures high sensitivity and rapid response in temperature monitoring. NTC thermistors, with their negative temperature coefficient, rapidly decrease their resistance as the temperature rises, thus reflecting temperature changes promptly. The direct contact design with the bottom of the panel 200 eliminates thermal resistance from intermediate media, allowing the temperature sensor 500 to more accurately obtain the actual temperature of the panel 200, rather than its relative temperature. This design optimizes the accuracy and real-time performance of temperature monitoring, providing more precise temperature information to the control circuit, facilitating finer power adjustment and overheat protection, and further enhancing the cooking performance and safety of the induction cooker.

[0026] It is conceivable that the temperature sensing element 500 could also be replaced with other components, such as differential pressure couplers, as long as the temperature detection effect can be achieved. The specific implementation method is not unique and can be adjusted according to the actual situation; therefore, no restrictions are imposed here.

[0027] In some embodiments, reference is made to Figure 1 The temperature sensor 500 is electrically connected to a control circuit, which in turn is electrically connected to the heating element. The control circuit can control the heating element to turn on or off based on the detection results from the temperature sensor 500. This electrical connection between the temperature sensor 500 and the control circuit, along with the intelligent control of the heating element by the control circuit, enables automated temperature management and overheat protection for the induction cooker. The control circuit can receive temperature signals from the temperature sensor 500 in real time and react quickly according to preset temperature thresholds, adjusting the power output of the heating element or directly cutting off the power to prevent overheating. This closed-loop control system not only improves the safety of the induction cooker but also enhances its intelligence, making cooking more convenient for users. The control circuit can adaptively adjust to different materials and sizes of cookware, ensuring stable heating while preventing food from burning or scorching due to temperature runaway, thus improving the user's cooking experience and the reliability of the equipment.

[0028] Furthermore, an intelligent learning algorithm is integrated into the control circuit, enabling the induction cooker to automatically adjust its temperature control strategy based on the user's cooking habits and cookware type. The intelligent learning algorithm gradually builds a user profile and cooking model by recording data such as user operating habits, cooking time, and temperature settings. In subsequent use, the control circuit can predict the user's operating intentions based on these models and adjust the power output of the heating elements in advance, achieving a more personalized and intelligent cooking experience. For example, for users who frequently use concave cookware for stewing, the induction cooker can automatically learn and optimize a low-power continuous heating mode to prevent food from overflowing or burning due to temperature fluctuations, while ensuring the safety and efficiency of the cooking process.

[0029] In some embodiments, reference is made to Figure 2 The heating element includes a coil 300 for mounting a coil; at least one of multiple temperature sensors 500 is located in the center of the coil 300, and at least one of the multiple temperature sensors 500 is located on the side of the coil 300. The heating element uses a coil 300 design, with the temperature sensors 500 respectively located in the center and on the side of the coil 300, making temperature monitoring more aligned with the distribution of the heat source. As the core heating component of the induction cooker, the coil 300 directly affects the heating effect of the cookware. Installing the temperature sensors 500 in the center and on the side of the coil 300 allows for separate monitoring of the temperature in corresponding areas, ensuring consistency between heat output and temperature monitoring. This layout helps to promptly detect temperature anomalies in various parts of the coil 300, preventing localized overheating that could damage the coil or reduce efficiency. Simultaneously, it provides more detailed temperature distribution information to the control circuit, facilitating more precise power control and overheat protection strategies, extending the lifespan of the induction cooker, and reducing maintenance costs.

[0030] In some embodiments, reference is made to Figure 3 A mounting hole 350 is provided in the center of the coil 300, and the temperature sensing element 500 is installed in the mounting hole 350. Providing a mounting hole 350 in the center of the coil 300 for the temperature sensing element 500 provides a simple and efficient solution for fixing the temperature sensing element 500. The design of the mounting hole 350 allows the temperature sensing element 500 to be precisely positioned in the core heating area of ​​the coil 300, directly contacting or close to the coil and panel 200, thereby more accurately monitoring the coil temperature. This direct installation method reduces temperature monitoring delays caused by excessively long or complex heat conduction paths, improving the real-time performance and reliability of temperature data. At the same time, the structure of the mounting hole 350 facilitates the installation and replacement of the temperature sensing element 500, reducing the difficulty of production assembly and subsequent maintenance, ensuring that the induction cooker maintains good temperature monitoring performance during long-term use, which is one of the key design features for improving equipment stability and user satisfaction.

[0031] Furthermore, a thermal fuse can be installed within the mounting hole 350 as a redundant overheat protection measure. When the temperature exceeds a preset safety threshold, the thermal fuse automatically melts, cutting off the power supply to the heating element and providing additional safety assurance. The thermal fuse is installed directly adjacent to the temperature sensor 500, enabling a rapid response in case of overheating caused by a fault in the temperature sensor 500 or the control circuit, forming a dual protection mechanism. This redundant design significantly reduces the risk of safety accidents caused by system failures, meeting the high safety standards required for home appliance design and providing users with more comprehensive protection.

[0032] In some embodiments, reference is made to Figure 3 The coil 300 has multiple hollow areas 330 on its side, each hollow area 330 being distributed around the central part of the coil 300. At least one of the hollow areas 330 contains a temperature sensing element 500. The arrangement of multiple hollow areas 330 on the side of the coil 300, with the temperature sensing element 500 installed in at least one of them, optimizes the layout and effectiveness of side temperature monitoring. The hollow area 330 design not only reduces the weight of the coil 300 but also provides an ideal installation position for the temperature sensing element 500, allowing it to better fit close to the side of the cookware and monitor side temperature changes caused by the shape or placement of the cookware. The multiple hollow areas 330 distributed around the central part of the coil 300 ensure uniform coverage of the temperature sensing element 500 on the side, avoiding monitoring blind spots. This ingenious structural design effectively improves the adaptability of the induction cooker to flat and concave cookware and the comprehensiveness of temperature monitoring without significantly increasing cost or complexity, enhancing the product's market competitiveness.

[0033] In some embodiments, reference is made to Figure 3 The coil 300 is equipped with a connecting bracket 550, which extends into the hollow area 330. The temperature sensing element 500 is mounted on the connecting bracket 550. The addition of the connecting bracket 550 and its extension into the hollow area 330 for mounting the temperature sensing element 500 improves the stability and accuracy of the temperature sensing element 500 within the hollow area 330. The connecting bracket 550 provides a robust support structure for the temperature sensing element 500, ensuring its fixed position during induction cooker operation and preventing displacement or damage due to vibration or thermal expansion and contraction. Simultaneously, the design of the connecting bracket 550 facilitates the installation and removal of the temperature sensing element 500, eliminating the need for complex operations on the coil 300 body, reducing production costs and maintenance time. Through the precise positioning of the connecting bracket 550, the temperature sensing element 500 can more stably fit close to the bottom side of the cookware, further improving the accuracy and reliability of temperature monitoring and providing a more solid foundation for the induction cooker's overheat protection function.

[0034] As is anticipated, the detachable design of the connecting bracket 550 facilitates regular maintenance or replacement of the temperature sensor 500. The connecting bracket 550 is fixed within the hollow area 330 of the coil 300 via a threaded or snap-fit ​​connection, allowing for the installation and removal of the temperature sensor 500 without disassembling the coil 300 itself. This design is particularly suitable for induction cookers that are frequently used or operate for extended periods, enabling timely replacement of damaged temperature sensors 500 and ensuring the normal operation of the temperature monitoring system. Furthermore, the detachable connecting bracket 550 simplifies the production and assembly process, reduces production costs, enhances the market competitiveness of the induction cooker, and provides users with a more reliable and economical cooking equipment option.

[0035] In some embodiments, reference is made to Figure 2 The coil 300 bends towards the bottom of the cooktop 100 at its center, with the same curvature as the panel 200. This innovative design matches the curvature of concave cookware, optimizing the contact performance and heating efficiency between the induction cooker and the cookware. The curved coil 300 allows the magnetic field to be more concentrated on the bottom of the cookware, reducing magnetic energy loss and improving energy conversion efficiency. Simultaneously, the identical curvature of the coil 300 to the panel 200 ensures coordination between them, preventing unstable cookware placement or uneven heating due to curvature differences. This curved fit design not only improves the induction cooker's adaptability to concave cookware but also enhances heat conduction efficiency during heating, shortens cooking time, saves energy, and provides users with a more efficient and energy-saving cooking experience.

[0036] In some embodiments, reference is made to Figure 2 The temperature sensing element 500 located in the center of panel 200 and the temperature sensing element 500 located on the side of panel 200 are equidistant from panel 200. This equidistant design ensures consistent temperature monitoring. This design allows the center and side temperature sensing elements 500 to monitor temperature under the same initial conditions, avoiding monitoring errors caused by different installation positions, and improving the reliability of temperature data and the accuracy of control circuit decisions. During actual cooking, the control circuit can more fairly assess the overall heating of the cookware based on the temperature information provided by the equidistant temperature sensing elements 500, achieving more balanced power distribution and more precise overheat protection.

[0037] It is foreseeable that the distribution of the various temperature sensors 500 can also be configured in other ways. By optimizing the layout of the central and side temperature sensors 500 to match the typical heat distribution pattern of the cookware, the accuracy of temperature monitoring can be further improved. Through thermal simulation analysis or actual cooking tests, the hot spots of the cookware in different cooking modes can be determined, and the position and spacing of the temperature sensors 500 can be adjusted accordingly. For example, in frying mode, the side temperature sensors 500 can be placed closer to the edge of the cookware to monitor the edge temperature rise caused by the flame or rising hot air; in stewing mode, the central temperature sensor 500 can be placed deeper into the center of the bottom of the cookware to ensure accurate monitoring of the main heating areas. This adaptive layout design allows the induction cooker to better adapt to diverse cooking needs, improve the flexibility and accuracy of temperature control, and bring users a better cooking experience.

[0038] The second aspect of this utility model provides an embodiment of an induction cooker, including the concave structure described above. By setting temperature sensors 500 in the center and sides of the panel 200, the temperature monitoring accuracy for different types of cookware, especially concave-bottomed cookware, is significantly improved. The temperature sensor 500 located in the center of the panel 200 can accurately monitor the temperature at the center of the bottom of the cookware, while the temperature sensor 500 on the side effectively supplements the temperature monitoring of the edge area of ​​the cookware, ensuring that temperature changes across the entire bottom of the cookware are captured in a timely manner. This multi-point monitoring layout allows the induction cooker to more comprehensively and accurately reflect the actual cooking temperature, providing more reliable temperature data for the control circuit, thereby achieving more timely and accurate overheat protection. For concave-bottomed cookware, the role of the side temperature sensor 500 is particularly crucial. It can detect heat accumulation that may occur at the edge of the cookware due to changes in curvature, preventing damage to the cookware or safety accidents caused by localized overheating, greatly improving the safety of the induction cooker and its adaptability to diverse cookware, and enhancing the user experience.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A concave structure, characterized in that, include: Furnace body (100); A panel (200) is disposed on the stove body (100) and used to support cookware. The middle part of the panel (200) is bent toward the inside of the stove body (100) and the panel (200) forms a concave surface for supporting cookware. An electric heating element is disposed within the furnace body (100) and used for heating; Multiple temperature sensors (500) are disposed inside the furnace body (100) and located between the panel (200) and the furnace body (100). The temperature sensors (500) are used to detect the temperature of the panel (200). At least one of the multiple temperature sensors (500) is located in the middle of the panel (200), and at least one of the multiple temperature sensors (500) is located on the side of the panel (200).

2. The concave structure as described in claim 1, characterized in that: The temperature sensing element (500) is configured as an NTC thermistor, and the temperature sensing element (500) is in contact with the bottom of the panel (200).

3. The concave structure as described in claim 1, characterized in that: The temperature sensing element (500) is electrically connected to a control circuit, which is electrically connected to the heating component. The control circuit can control the heating component to turn on or off based on the detection result of the temperature sensing element (500).

4. The concave structure as described in claim 3, characterized in that: The heating assembly includes a coil disk (300) for mounting a coil; at least one of the plurality of temperature sensing elements (500) is disposed in the middle of the coil disk (300), and at least one of the plurality of temperature sensing elements (500) is disposed on the side of the coil disk (300).

5. The concave structure as described in claim 4, characterized in that: The coil disk (300) has a mounting hole (350) in the middle, and the temperature sensing element (500) is installed in the mounting hole (350).

6. The concave structure as described in claim 4, characterized in that: The coil disk (300) has a plurality of hollow areas (330) on its side, each hollow area (330) is distributed around the middle part of the coil disk (300), and at least one of the hollow areas (330) has the temperature sensing element (500).

7. The concave structure as described in claim 6, characterized in that: The coil disk (300) is provided with a connecting frame (550), the connecting frame (550) extends into the hollow area (330), and the temperature sensing element (500) is installed on the connecting frame (550).

8. The concave structure as described in claim 4, characterized in that: The middle part of the coil (300) bends toward the bottom of the furnace body (100), and the bending amplitude of the coil (300) is the same as that of the panel (200).

9. The concave structure as described in claim 8, characterized in that: The temperature sensing element (500) located in the middle of the panel (200) and the temperature sensing element (500) located on the side of the panel (200) are at the same distance relative to the panel (200).

10. An induction cooker, characterized in that, Includes the concave structure as described in any one of claims 1 to 9.

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