Cooking appliance

Abstract

The utility model discloses a kind of cooking utensils, it is related to cooking utensils technical field, wherein, cooking utensils includes main body, electric heating device, electromagnetic heating device and control device, main body includes panel, the upside of panel is provided with the heating area of being recessed arrangement, electric heating device is located in main body, and it is arranged corresponding heating area, heating chamber is defined between electric heating device and panel, heating chamber and the bottom and side of heating area correspond, electric heating device includes at least one heating part, heating part can heat the air in heating chamber, electromagnetic heating device is located in main body and is located at the side of electric heating device facing away from panel;In the utility model, by the setting of panel structure and heating structure, while heating the bottom of utensil, good heating effect to the side of utensil can be realized, and then the heating performance of entire cooking utensils is well improved.

Description

Technical Field

[0001] This utility model relates to the field of cooking utensils technology, and in particular to a cooking utensil. Background Technology

[0002] Some existing induction cookers employ a hybrid heating method, such as using stacked infrared heating plates and coils within the cooker structure, to address the issue of traditional induction cookers being unable to heat non-metallic cookware. Please refer to [link / reference]. Figures 1a to 1e ,in Figure 1a This is a diagram showing the overall appearance and structure of a traditional hybrid power furnace, 1b is... Figure 1a Exploded view of the hybrid power furnace. Figure 1c for Figure 1a Vertical cross-sectional view of the hybrid power furnace. Figure 1d for Figure 1b The infrared furnace plate structure diagram in the image. Figure 1e for Figure 1a A schematic diagram of heat transfer during the heating process of a hybrid induction cooker. While the aforementioned hybrid cooker structure solves the problem of choosing the right cookware, it also increases the distance between the electromagnetic heating coil and the cookware. During cooking, the electromagnetic heating coil cannot effectively heat the cookware if the distance exceeds a certain range (around 15mm). Most traditional hybrid induction cookers are flat-panel structures, meaning that when the cookware is placed on the induction cooker, the distance between the side of the cookware and the electromagnetic heating coil is relatively large. Therefore, electromagnetic heating often fails to heat the sides of the cookware, resulting in a lack of wok hei (wok aroma) during cooking, and the flavor and nutrients of the ingredients are not fully extracted. Utility Model Content

[0003] The main purpose of this invention is to propose a cooking appliance that addresses the problem that traditional hybrid stoves often fail to heat the pot walls, resulting in a lack of wok hei (wok aroma) during cooking and making it difficult to fully bring out the flavor and nutrients of the ingredients due to the relatively low temperature on the sides of the pot.

[0004] To achieve the above objectives, the cooking utensil proposed in this utility model includes:

[0005] The main body includes a panel, and a recessed heating area is provided on the upper side of the panel;

[0006] An electric heating device is disposed within the main body and is positioned corresponding to the heating area. A heating chamber is defined between the electric heating device and the panel. The heating chamber corresponds to the bottom and side of the heating area. The electric heating device includes at least one heating element capable of heating the air within the heating chamber.

[0007] An electromagnetic heating device is disposed within the main body and located on the side of the electric heating device facing away from the panel. The electromagnetic heating device includes a first coil assembly, which is disposed at the bottom of the heating area. The magnetic field of the first coil assembly can pass through the electric heating device to electromagnetically heat the bottom of the cookware.

[0008] A control device is electrically connected to the electric heating device and the electromagnetic heating device to control the operation of the electric heating device and the electromagnetic heating device.

[0009] In one embodiment, the electric heating device further includes a heat insulation baffle located on the side of the heating element opposite to the heating chamber, the heat insulation baffle being disposed at least on the side corresponding to the heating area; and / or,

[0010] The electric heating device also includes a heat insulation baffle located on the side of the heating part opposite to the heating chamber, and the heat insulation baffle is provided on the side and bottom of the heating area.

[0011] In one embodiment, the electric heating device includes a plurality of heating elements, including a first heating element and a second heating element. The first heating element is disposed at the bottom of the heating area, and the second heating element is disposed at the side of the heating area.

[0012] In one embodiment, at least one of the heating elements is partially offset from the first coil assembly;

[0013] The control device controls the first heating element and the second heating element to work independently.

[0014] In one embodiment, the first heating element and the second heating element are arranged in parallel, so that the control device controls the first heating element and the second heating element to operate independently; and / or,

[0015] The second heating element is arranged in a ring shape and is arranged around the periphery of the first heating element.

[0016] In one embodiment, the electric heating device includes an infrared heating device.

[0017] In one embodiment, the electromagnetic heating device further includes a second coil assembly disposed outside the heating chamber and at least partially located on the periphery of the side portion of the heating area. The magnetic field of the second coil assembly can pass through the heat insulation baffle to electromagnetically heat the side wall of the cookware.

[0018] In one embodiment, the control device is capable of controlling the first coil assembly and the second coil assembly to operate independently.

[0019] In one embodiment, the first coil assembly and the second coil assembly are connected in parallel.

[0020] In one embodiment, the electromagnetic heating device further includes a second coil assembly, which is disposed outside the heating chamber and at least partially located on the periphery of the side portion of the heating area;

[0021] The electric heating device includes a plurality of heating elements, including a first heating element and a second heating element. The first heating element is disposed at the bottom of the heating area, and the second heating element is disposed at the side of the heating area.

[0022] The heating area is gradually expanded outward in the upward direction;

[0023] Accordingly, the second heating element and the second coil assembly are gradually extended outward in the upward direction.

[0024] This invention not only replaces the traditional flat receiving panel with a recessed structure to cover the side area of ​​the cookware, thus increasing the heat exchange area between the cookware side and the panel, but also incorporates a heat-insulating part inside the main body. This forms a covering heating cavity outside the heating area, which is rapidly heated by an electric heating device to radiate heat to the side of the cookware, effectively improving the heating effect on the side and resulting in faster and more even heating of all parts of the cookware. Furthermore, the combination of electric and electromagnetic heating provides a heating method suitable for all types of cookware, broadening the applicability of the cookware and demonstrating promising application prospects. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figures 1a to 1e A schematic diagram of the relevant structure of a traditional hybrid power furnace;

[0027] Figure 2 A schematic diagram of the overall structure of an embodiment of the cooking utensil provided by this utility model;

[0028] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0029] Explanation of icon numbers:

[0030] 100. Cooking appliance; 1. Main body; 11. Panel; 111. Heating area; 2. Electric heating device; 21. First heating element; 22. Second heating element; 3. Electromagnetic heating device; 31. First coil assembly; 32. Second coil assembly; 4. Heat insulation baffle; 41. Outer shell; 42. Heat insulation base; 5. Heating chamber; 6. Coil support; 7. Thermistor element.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] Some existing induction cookers employ a hybrid heating method, such as using stacked infrared heating plates and coils within the cooker structure, to address the issue of traditional induction cookers being unable to heat non-metallic cookware. Please refer to [link / reference]. Figures 1a to 1e ,in Figure 1a This is a diagram showing the overall appearance and structure of a traditional hybrid power furnace, 1b is... Figure 1a Exploded view of the hybrid power furnace. Figure 1c for Figure 1a Vertical cross-sectional view of the hybrid power furnace. Figure 1d for Figure 1b The infrared furnace plate structure diagram in the image. Figure 1e for Figure 1a A schematic diagram of heat transfer during the heating process of a hybrid induction cooker. The aforementioned hybrid induction cooker structure uses a hybrid heating structure formed by an infrared coil 2' and an electromagnetic heating coil 3'. While this solves the problem of choosing the right cookware, the placement of the infrared coil 2' also increases the distance between the electromagnetic heating coil 3' and the cookware. During cooking, the electromagnetic heating coil 3' cannot effectively heat the cookware if the distance exceeds a certain range (approximately 15mm). Since most traditional hybrid induction cookers have a flat panel structure like the heating panel 11' shown in the diagram, the distance between the side of the cookware and the electromagnetic heating coil 3' is relatively large when the cookware is placed on the induction cooker. Therefore, electromagnetic heating often fails to heat the sides of the cookware, resulting in a lack of wok hei (wok aroma) during cooking due to the relatively low temperature on the sides, making it difficult to fully extract the flavor and nutrients of the ingredients.

[0036] This utility model proposes a cooking utensil 100 to solve the above problems.

[0037] Please see Figures 2 to 3 In one embodiment of this utility model, the cooking appliance 100 includes a main body 1, a power generation device 2, an electromagnetic heating device 3, and a control device. The main body 1 includes a panel 11, on the upper side of which is a recessed heating area 111. An electric heating device 2 is disposed within the main body 1 and is positioned corresponding to the heating area 111. A heating chamber 5 is defined between the electric heating device 2 and the panel 11. The heating chamber 5 corresponds to the bottom and side of the heating area 111. The electric heating device 2 includes at least one heating element capable of heating the air within the heating chamber 5. An electromagnetic heating device 3 is disposed within the main body 1 and located on the side of the electric heating device 2 facing away from the panel 11. The electromagnetic heating device 3 includes a first coil assembly 31, which is positioned corresponding to the bottom of the heating area 111. The magnetic field of the first coil assembly 31 can pass through the electric heating device 2 to electromagnetically heat the bottom of the cookware. A control device is electrically connected to the electric heating device 2 and the electromagnetic heating device 3 to control their operation.

[0038] The present invention primarily proposes a composite heating cooking appliance 100. This composite heating effect, combined with its specific panel 11 structure design, not only heats the bottom of the pot but also further heats the side walls, thereby enhancing the overall heating effect of the cooking appliance 100. The flavor and nutrition of the ingredients are also fully stimulated during cooking. Specifically, when the cooking appliance 100 is in use, the pot is placed within the heating area 111. Unlike conventional flat support surfaces, in this embodiment, the panel 11 has a recessed section facing inwards towards the main body 1 to accommodate the pot. During actual cooking, the pot is placed in a sunken position within the heating area 111, with its bottom and at least part of its side walls located within the heating area 111. When the heating structure inside the main body 1 is activated, it can simultaneously heat both the side walls and the bottom, achieving a highly efficient heating effect. The entire cooking process is completed by the combined operation of the electric heating device 2 and the electromagnetic heating device 3. The heating element is located within the heating chamber 5, which covers the bottom and at least part of the side walls of the heating area 111. Therefore, when the heating element heats the cookware inside the heating area 111, it first heats the air inside the heating chamber 5. A portion of the heat is conducted to the panel 11 through the hot air, thus heating at least the side of the cookware. Simultaneously, some of the heat emitted by the heating element can be directly radiated to the cookware. This structure allows for simultaneous heating of the bottom and side areas of the heating area 111, resulting in better overall heating of the cookware. The electromagnetic heating device 3 is located on the side of the electric heating device 2 away from the panel 11. The first coil assembly 31 in the electromagnetic heating device is positioned corresponding to the bottom of the heating area 111. When the first coil assembly 31 is working, its magnetic field can penetrate the electric heating device 2 above to heat the bottom of the cookware. The combination of the two heating structures described above allows the electric heating device 2 to not only assist the first coil assembly 31 in heating the bottom of the pot, but also to simultaneously heat the sides of the pot, resulting in better heating of the cooking appliance 100 during cooking. Furthermore, the overall heating effect of the cooking appliance 100 can be adjusted manually by the operator. In practice, the heating state of the electric heating device 2 and the battery-powered cooking appliance 100 can be adjusted by controlling the control device installed inside the main body 1.

[0039] Due to the arrangement of the heating chamber 5, it is conceivable that the specific installation position of the heating element is not limited to the bottom or side of the heating area 111. In one embodiment of this utility model, the heating element is disposed at the bottom of the heating area. As mentioned above, when the heating element is working, it can heat the air inside the heating chamber 5, thereby transferring heat to a portion of the structure of the heating area 111 contained in the heating chamber 5 through thermal radiation. This includes not only the bottom of the pot but also part of the side wall structure of the pot. Therefore, when the heating element is installed at the bottom of the heating area 111, it is also possible to heat the side of the pot. However, it is conceivable that the heating effect on the bottom of the pot is better in this case.

[0040] In another embodiment of this invention, the heating element can be positioned on the side of the heating area 111. Due to the arrangement of the heating chamber 5, when the heating element is positioned on the side of the heating area 5, it can directly radiate a portion of the heat to the cookware, while also heating the heating chamber 5. This also assists in heating the bottom of the heating area 111. Therefore, this method provides a more significant heating effect on the side of the cookware, and, combined with the first coil assembly 31, achieves efficient heating of the bottom of the cookware.

[0041] In the above embodiments, it should be noted that the electric heating device 2 is specifically configured as a heating method that is not picky about cookware, and its heating method includes radiant heat heating. Therefore, the heat source of the electric heating device 2 is preferably set as an infrared or light wave heat source. This setting is because the materials of cookware on the market are becoming increasingly diversified. Unlike the past when cookware was mostly made of iron, many existing cookware focuses on aesthetics, and there are more and more cookware made of ceramic composite materials or glass composite materials. When the cookware is made of ceramic or glass materials, the electromagnetic heating device 3 cannot achieve the expected heating effect. In this embodiment, after setting the heat source of the electric heating device 2 to infrared or light waves, if the electromagnetic coil structure fails to effectively heat the cookware, the electric heating device 2 can heat the cookware and the panel 11 by radiant heat. Therefore, in the structure of this embodiment, when the above situation occurs, the electric heating device 2 can replace the electromagnetic heating device 3 to heat the cookware. Therefore, it is not difficult to see that the combination of the electric heating device 2 and the first coil assembly 31 not only achieves the above-mentioned better heating effect, but also enables the entire cooking appliance 100 to heat pots made of various materials, realizing a heating method that is not picky about pots, and further improving the applicability of the entire cooking appliance 100.

[0042] Furthermore, it is conceivable that the sidewall structure of the panel 11 corresponding to the heating area 111 should be made of a material with good thermal conductivity to achieve efficient heat conduction during cooking. Moreover, the size of the heating area 111 can be set in various specifications according to actual market demands. For example, it can be set according to several mainstream sizes of traditional cookware on the market to meet different usage needs.

[0043] Figure 3 The diagram illustrates the heat transfer process during heating in a traditional hybrid induction cooker. It clearly shows that in a traditional planar heating structure, after the pot is placed on the heating panel, primarily the bottom surface of the pot contacts the heating surface of the panel, and the heating coil mainly heats the bottom area of ​​the pot, which is relatively close to it. The heating area on the side of the pot is much further away from the heating panel, and when the distance between the electromagnetic heating coil and the pot exceeds approximately 15mm, the coil often fails to effectively heat the pot. Therefore, for a conventional hybrid induction cooker, the heating effect on the side of the pot is relatively poor compared to the bottom. The structure described in this application, firstly, employs a recessed panel 11 structure, increasing the contact area between the heating area 111 and the pot. Furthermore, the heating area of ​​the electric heating device 2 extends to the side of the pot, thus achieving effective heating not only to the bottom of the pot but also providing a good cooking temperature to the side. Therefore, the structural design in this solution effectively solves the problem of traditional hybrid stoves having difficulty heating the side walls of cookware. Compared with the traditional planar heating structure, this solution can achieve better heating results.

[0044] To ensure rapid heating of the side of the heating area 111, in this embodiment, the heating chamber is configured as a covered structure. Specifically, the electric heating device 2 further includes a heat insulation baffle 4 located on the side of the heating part opposite to the heating chamber 5, and the heat insulation baffle 4 is provided at least corresponding to the side of the heating area 111.

[0045] The electric heating device 2 includes the heat insulation baffle 4, which forms the heating chamber 5. The heat insulation baffle 4 is disposed on the side of the heating area 111, and it can form a relatively sealed shell structure on the side wall of the heating area 111. The heating chamber is located inside the shell structure. At this time, the heating element is disposed in the heating chamber, and it can mainly heat the side of the heating area 111, thereby improving the heating effect on the side of the cookware.

[0046] In another embodiment of this application, the electric heating device 2 further includes a heat insulation baffle 4 located on the side of the heating part opposite to the heating chamber 5, the heat insulation baffle 4 being provided corresponding to the side and bottom of the heating area 111.

[0047] In the above embodiment, the heat insulation baffle 4 is provided on the side and bottom of the heating area 111. That is, the opening of the heat insulation baffle 4 is at least partially connected to the side of the heating area 111, and the formed heating chamber 5 includes the bottom of the heating area 111 and at least part of the side structure of the heating area 111. Therefore, when the heating part and the first coil assembly 31 are working, the heating effect on the side of the pot can be improved through the above heating method.

[0048] In another embodiment of this utility model, the heat insulation baffle 4 covers the bottom and sides of the heating area 111, and the open end of the heat insulation baffle 4 is connected to the inner wall of the panel 11. With the above structure, the heat insulation baffle 4 forms an integral covering structure located outside the heating area 111. At this time, the heat insulation baffle 4 is located outside the heating area 111 and covers the entire heating area 111. The heating element is located on the inner wall of the heat insulation baffle 4 corresponding to the direction of the panel 11. During its operation, part of the heat can be directly transferred to the cookware through radiation, and another part of the heat can cause the air in the sealed heating cavity 5 to heat up rapidly, further raising the temperature of the panel 11 through the heated air, thereby achieving a good heating effect on both the bottom and sides of the cookware simultaneously. Furthermore, the heat insulation baffle 4 can also, to some extent, prevent mutual interference between the heating element and the first coil assembly 31 during the heating process. After continuous heating in a mixed state for a period of time, the temperature of the first coil assembly 31 is relatively high. Simultaneously, during the operation of the heating element, some of the heat generated will radiate to the first coil assembly 31, causing its temperature to rise rapidly and reach a high value. The high temperature of the first coil assembly 31 may burn the protective layer and external fixing structure. The heat insulation baffle 4 can, to some extent, prevent the downward radiation of the heating element's temperature, ensuring rapid heating of the heating chamber 5 while also improving the stability of the electromagnetic coil structure during operation.

[0049] In the above embodiments, it is conceivable that the heat insulation baffle 4 is located between the electromagnetic heating device 3 and the heating area 111. To prevent the heat insulation baffle 4 from affecting the heating effect of the electromagnetic heating device 3 during the heating of the pot by the battery-powered cooking appliance 100, it is conceivable that the heat insulation baffle 4 is made of a non-metallic material. Furthermore, considering that the internal temperature of the main body 1 of the cooking appliance 100 is relatively high when it is in operation, the heat insulation baffle 4 also possesses a certain degree of high-temperature resistance to ensure a stable high-temperature heating effect. Among existing materials, the heat insulation baffle 4 can be made of DMC plastic. Due to its inherent high-temperature resistance, DMC plastic will not only not affect the heating of the electromagnetic heating device 3 during use, but can also withstand temperatures of around 300°C, which is well-suited to the specific usage scenarios described in the above embodiments. Specifically, the heat insulation baffle 4 is configured as a double-layer structure, wherein the side away from the heating area 111 is the outer shell 41, and the inner side of the outer shell 41 is provided with a heat insulation bottom 42. The heating part is located on the side of the heat insulation bottom 42 corresponding to the heating area 111. Both the outer shell 41 and the heat insulation bottom 42 are made of non-metallic high-temperature resistant materials.

[0050] As described above, the electric heating device 2 provides a heating method that is compatible with all cookware, further enhancing the heating effect and applicability of the entire cooking appliance 100. The electric heating device 2 includes multiple heating elements, including a first heating element 21 and a second heating element 22. The first heating element 22 is located at the bottom of the heating area 111, and the second heating element 22 is located on the side of the heating area 111.

[0051] To further improve the heating effect of the electric heating device 2, in a preferred embodiment of this invention, multiple heating elements are provided, including a first heating element 21 and a second heating element 22. Specifically, the first heating element 21 and the second heating element 22 are positioned on the side and bottom of the heating area 111, respectively. During the actual heating of the cookware using these heating elements, the second heating element 22 directly assists the first coil assembly 31 in heating the bottom of the cookware. The first heating element 21 directly heats the side of the cookware, and the first heating element 21 and the second heating element 22 can mutually promote each other's heating effect within the heating chamber 5. During simultaneous heating, efficient heating of both the side and bottom of the cookware can be achieved simultaneously. Furthermore, even if the first coil assembly 31 loses its heating capability for a specific cookware, the simultaneous operation of the first heating element 21 and the second heating element 22 still ensures a good overall heating effect for the cookware.

[0052] In the technical solution of this utility model, both the first coil assembly 31 and the second heating element 22 are disposed below the bottom of the heating area 111, with the first heating element 21 positioned between the first coil assembly 31 and the panel 11. During operation, the first coil assembly 31 generates heat in its metal structure due to changes in its magnetic field. To minimize interference between the first coil assembly 31 and the first heating element 21 during operation, in this embodiment, at least one of the heating elements is partially offset from the first coil assembly 31, and the control device controls the first heating element 21 and the second heating element 22 to operate independently.

[0053] In one embodiment of this invention, when the cooking appliance 100 is in a hybrid heating mode, the control device controls the first coil assembly 31 to be energized. The first coil assembly 31 operates, generating an electromagnetic field that couples with the pot at the heating area 111, providing electromagnetic heating to the heating area 111. Simultaneously, the control device 4 controls the first heating element 21 and the second heating element 22 to be simultaneously activated and begin heating. During this process, the coil structure itself heats up, and the first heating element 21 and the second heating element simultaneously radiate heat to the first coil assembly 31. Therefore, after the entire cooking appliance 100 operates in the aforementioned heating state for a period of time, the temperature of the first coil assembly 31 will rise rapidly. To prevent the temperature of the first coil assembly 31 from becoming too high, the control device can shut down the heating element corresponding to the first coil assembly 31, allowing the heating element offset from the first coil assembly 31 to operate. This ensures heating power while reducing the impact on the first coil assembly, preventing the first coil assembly 31 from overheating.

[0054] In another embodiment of this utility model, both the first heating element 21 and the second heating element 22 are at least partially offset from the first coil assembly 31. As mentioned above, when the heating elements and the first coil assembly 31 are aligned vertically, it will cause the temperature of the first coil assembly 31 to rise to a certain extent. In this embodiment, after the two heating elements are partially offset from the first coil assembly, the impact of the heating elements on the first coil assembly 31 during operation can be greatly reduced. This reduces the probability of the second coil assembly 32 overheating, thereby effectively extending its service life.

[0055] To achieve efficient control of the first heating element 21 and the second heating element 22 by the control device, the wiring connection structure is simplified as much as possible. In this embodiment, the first heating element 21 and the second heating element 22 are connected in parallel, so that the control device can control the first heating element 21 and the second heating element 22 to work independently.

[0056] The first heating element 21 and the second heating element 22 are connected in parallel and can be individually controlled by the control device. In actual use, the first heating element 21, the second heating element 22, and the first coil assembly 31 are all connected in parallel with independent control circuits. The control device can switch the start / stop state of the current heating structure by controlling one of the circuits, thereby simplifying the control process and the corresponding circuit connection structure.

[0057] In another embodiment of this utility model, the first heating element 21 and the second heating element 22 can be connected in series. After the first heating element 21 and the second heating element 22 are connected in series, if the control device is to control the first heating element 21 and the second heating element 22 to work independently, it may be necessary to connect corresponding control paths in parallel at the locations of the first heating element 21 and the second heating element 22. When one of the heating elements is turned on, the corresponding control path on the other heating element can be activated, thus making the other heating element inactive. When both control paths are disconnected, the control device can control both heating elements to work simultaneously. Therefore, the series connection method can also achieve independent operation of the two heating elements. From the perspective of convenience of the control process and simplicity of the circuit structure, the parallel connection method of the first heating element 21 and the second heating element 22 is preferred.

[0058] Furthermore, in the above embodiments, the control device allows the entire cooking appliance 100 to achieve multiple heating levels. For example, when the first coil assembly 31 and the first heating element 21 are operating, the bottom of the pot heats up quickly, while the sides of the pot are also heated to a certain extent. When the second heating element and the first coil assembly 31 are operating, the bottom and sides of the pot can achieve good heating simultaneously. When the first heating element 21, the second heating element 22, and the first coil assembly 31 are operating simultaneously, the bottom and sides of the pot can heat up rapidly at the same time and achieve a high cooking temperature. The above is only a description of some heating effects; combined with the above structural settings, various combinations of heating effects can be obtained, which will not be elaborated here.

[0059] To further enhance the heating effect of the entire cooking appliance, in one embodiment of the present invention, the electromagnetic heating device 3 further includes a second coil assembly 32. The second coil assembly 32 is disposed outside the heating chamber and at least partially located on the periphery of the side of the heating area 111. The magnetic field of the second coil assembly 32 can pass through the heat insulation baffle 4 to electromagnetically heat the side wall of the pot.

[0060] In this design, a portion of the coil structure of the second coil assembly 32 is positioned on the side of the heating area 111, allowing the second coil assembly 32 to heat the side wall of the cookware through the heat insulation baffle 4. Combined with the heating effect of the second heating element 22, this further enhances the overall heating effect of the cooking appliance 100 on the side wall of the cookware.

[0061] In actual setup, the second coil assembly 32 can also be arranged in a ring around the outer periphery of the first coil assembly 31 to uniformly heat the side of the pot during operation. Similarly, it is conceivable that both the second coil assembly 32 and the first heating element 22 are positioned on the side of the heating area, with the second heating element 22 also located between the second coil assembly 32 and the sidewall of the heating area. To prevent excessive heat radiation from the second heating element 22 onto the second coil assembly 32, the second coil assembly 32 and the second heating element 22 can be staggered in a direction perpendicular to the side of the heating area 111, allowing the second coil assembly 32 to achieve a more stable heating effect.

[0062] The connection method and control process of the first coil assembly 31 and the second coil assembly 32 are similar to those of the first heating element 21 and the second heating element 22. Specifically, the control device can control the first coil assembly 31 and the second coil assembly 32 to work independently, and the first coil assembly 31 and the second coil assembly 32 are arranged in parallel.

[0063] In the above embodiments, after the first coil assembly 31 and the second coil assembly 32 are connected in parallel, the control device can adjust the start / stop state of the coil structure corresponding to the current path by controlling individual connection paths, thereby achieving rapid response. Similar to the first heating element 21 and the second heating element 22 described above, the first coil assembly 31 and the second coil assembly 32 can also be arranged in series. However, series connection is not conducive to optimizing the circuit structure and control process; therefore, parallel connection is preferred. With parallel connection, the control device can individually control the corresponding control path, thereby enabling a combination of various heating methods between the heating element and the coil assembly.

[0064] Considering that most cookware on the market is shaped to gradually expand outwards from the bottom towards the opening, in order to better correspond the inner wall of the heating area 111 to the outer wall shape of the cookware, thereby enabling the heating area 111 to achieve a more uniform heating effect on the bottom and sides of the cookware, in one embodiment of this utility model, the side of the heating area gradually expands outwards in the upward direction, and correspondingly, the second heating element and the second coil assembly gradually expand outwards in the upward direction.

[0065] In the above embodiments, it is conceivable that, in order to ensure the consistency of heating effect at different locations of the cookware as much as possible, the distance between the heating structure and the side wall of the cookware should be set as uniformly as possible. Therefore, in order to ensure the uniformity of heating temperature at the side of the cookware, the heating structure, especially the second heating part 22 and the second coil assembly 32 corresponding to the side of the heating area, is configured in this embodiment to gradually expand outward in the upward direction, so that the gap distance formed between the second heating part 22 and the second coil assembly 32 and the side wall structure of the heating area 111 is relatively uniform, thereby ensuring the uniformity of heating at the side of the cookware.

[0066] It is conceivable that the specific shape of the heating area 111 is set according to the actual situation. In some cases, the side of the heating area 111 may be vertically arranged. In this case, the second heating part 21 and the second coil assembly 32 can be arranged to extend in the vertical direction. Its specific shape is not limited to the above two, and can be set according to actual requirements in the actual production process.

[0067] In addition, to facilitate the fixed winding of the first coil assembly 31 and the second coil assembly 32, a coil support 6 is provided inside the main body 1. The coil support 6 has a horizontal portion corresponding to the bottom of the heating area 111 and an inclined portion corresponding to the side of the heating area 111. The first coil assembly 31 and the second coil assembly 32 are respectively disposed on the horizontal portion and the inclined portion. To ensure the uniformity of the heating effect of the two coil assemblies on the cookware, the distance from the horizontal portion to the bottom of the heating area 111 and the distance from the inclined portion to the side of the heating area 111 are preferably set to be equal. With this setting, the distance from the first coil assembly 31 to the bottom of the cookware and the distance from the second coil assembly 32 to the side of the cookware are approximately equal. When the electromagnetic coil is energized and working, the magnetic field strength acting on the cookware is approximately equal, thereby ensuring the uniformity of the heating temperature throughout the cookware during cooking.

[0068] Furthermore, a thermistor element 7 is provided at the bottom of the heating area 111. The thermistor element 7 is connected to the control device. When the temperature changes, the resistance value of the thermistor element 7 will change accordingly. This change can be detected and analyzed by the circuit, thereby enabling temperature monitoring and control through the control device, thus improving the safety and practicality of the entire cooking appliance 100 during use.

[0069] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cooking utensil, characterized in that, include: The main body includes a panel, and a recessed heating area is provided on the upper side of the panel; An electric heating device is disposed within the main body and is positioned corresponding to the heating area. A heating chamber is defined between the electric heating device and the panel. The heating chamber corresponds to the bottom and side of the heating area. The electric heating device includes at least one heating element capable of heating the air within the heating chamber. An electromagnetic heating device is disposed within the main body and located on the side of the electric heating device facing away from the panel. The electromagnetic heating device includes a first coil assembly, which is disposed at the bottom of the heating area. The magnetic field of the first coil assembly can pass through the electric heating device to electromagnetically heat the bottom of the cookware. A control device is electrically connected to the electric heating device and the electromagnetic heating device to control the operation of the electric heating device and the electromagnetic heating device.

2. The cooking appliance as described in claim 1, characterized in that, The electric heating device further includes a heat insulation baffle located on the side of the heating element opposite to the heating chamber, the heat insulation baffle being disposed at least on the side corresponding to the heating area; and / or, The electric heating device also includes a heat insulation baffle located on the side of the heating part opposite to the heating chamber, and the heat insulation baffle is provided on the side and bottom of the heating area.

3. The cooking utensil as described in claim 1, characterized in that, The electric heating device includes a plurality of heating elements, including a first heating element and a second heating element. The first heating element is disposed at the bottom of the heating area, and the second heating element is disposed at the side of the heating area.

4. The cooking utensil as described in claim 3, characterized in that, At least one of the heating elements is partially offset from the first coil assembly; The control device controls the first heating element and the second heating element to work independently.

5. The cooking utensil as described in claim 3, characterized in that, The first heating element and the second heating element are connected in parallel so that the control device can control the first heating element and the second heating element to work independently; and / or, The second heating element is arranged in a ring shape and is arranged around the periphery of the first heating element.

6. The cooking appliance as described in claim 1, characterized in that, The electric heating device includes an infrared heating device.

7. The cooking utensil as described in claim 2, characterized in that, The electromagnetic heating device further includes a second coil assembly, which is located outside the heating chamber and at least partially on the periphery of the side of the heating area. The magnetic field of the second coil assembly can pass through the heat insulation baffle to electromagnetically heat the side wall of the cookware.

8. The cooking appliance as described in claim 7, characterized in that, The control device can control the first coil assembly and the second coil assembly to work independently.

9. The cooking appliance as described in claim 7, characterized in that, The first coil assembly and the second coil assembly are connected in parallel.

10. The cooking utensil as described in any one of claims 1 to 9, characterized in that, The electromagnetic heating device further includes a second coil assembly, which is located outside the heating chamber and at least partially on the periphery of the side of the heating area; The electric heating device includes a plurality of heating elements, including a first heating element and a second heating element. The first heating element is disposed at the bottom of the heating area, and the second heating element is disposed at the side of the heating area. The heating area is gradually expanded outward in the upward direction; Accordingly, the second heating element and the second coil assembly are gradually extended outward in the upward direction.

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