Cooking container and cooking equipment

Abstract

The utility model provides a cooking container and a cooking device. The cooking container comprises a container body and a cover plate, the at least two PTC heating assemblies are installed on the container body, and the at least two PTC heating assemblies are connected in parallel. The at least two PTC heating components are mounted on the outer wall surface of the container body, and / or at least parts of the at least two PTC heating components are embedded into the wall of the container body; the pressing plate is installed on the outer wall face of the container body, and the at least two PTC heating assemblies are installed between the container body and the pressing plate. The two PTC heating components are directly mounted on the container body, so that the two PTC heating components can be in contact with the container body to transfer heat, the heating efficiency of a product can be improved, the cost of the product can be reduced, meanwhile, each PTC heating component can be independently turned on and turned off, each PTC heating component can automatically control the temperature, and the service life of the product is prolonged. Therefore, the temperature difference of different areas of the container body is small, and the heating uniformity of the container body is better.

Description

Technical Field

[0001] This application relates to the field of household appliances, and more specifically, to a cooking container and cooking equipment. Background Technology

[0002] In the relevant solutions, cooking equipment such as grills that use PTC heating elements are generally encapsulated in aluminum shells. The PTC heating element is separated from the baking pan by an aluminum shell, which reduces the heating efficiency of the PTC heating element and increases the cost of the product. Utility Model Content

[0003] This application aims to at least solve the problems of low heating efficiency and high cost in existing or related technologies, where the PTC heating element of cooking equipment cannot directly contact the baking pan or other materials for heat transfer.

[0004] Therefore, the first aspect of this application is to propose a cooking container.

[0005] The second aspect of this application is to propose a cooking device.

[0006] The first aspect of this application provides a cooking container, comprising: a container body; at least two PTC heating elements mounted on the container body, wherein the at least two PTC heating elements are connected in parallel. The at least two PTC heating elements are mounted on the outer wall of the container body, and / or at least a portion of the at least two PTC heating elements are embedded within the wall of the container body. The cooking container further comprises: a pressure plate mounted on the outer wall of the container body, wherein the at least two PTC heating elements are mounted between the container body and the pressure plate.

[0007] The cooking container provided in this application includes a container body and at least two PTC heating elements. The container body is used to hold food for heating. The surface of the container body that contacts the food is the food-bearing surface, and the surface of the container body away from the food-bearing surface is the heating surface. The at least two PTC heating elements are disposed on the outer wall surface (heating surface) of the container body. When the at least two PTC heating elements are energized, they generate heat to heat the container body, thereby heating the food placed on the container body, such as boiling the food, heating cold food, or boiling water. The PTC heating elements can be installed on the outer wall surface of the container body, or partially or completely embedded within the wall of the container body. Embedding the PTC heating elements within the wall of the container body increases the contact area between the PTC heating elements and the container body, thereby significantly improving the heat transfer efficiency of the PTC heating elements, resulting in faster heating of the container body, higher thermal efficiency, and greater energy savings. Exemplarily, the PTC heating elements and the container body can be molded together using a mold.

[0008] PTC heating elements, also known as positive temperature coefficient heating elements, have the characteristic that their resistance increases with increasing temperature; that is, the higher the temperature, the lower the power. When the temperature reaches the Curie temperature, the heating power and heat dissipation power of the PTC heating element are in balance. At this point, if a load is applied (increasing heat dissipation and lowering the temperature), the power of the PTC heating element will increase, causing the temperature to rise again. Therefore, utilizing the adaptive and self-regulating temperature characteristics of PTC heating elements as a heat source can minimize temperature fluctuations in cooking equipment. Furthermore, because multiple PTC heating elements individually regulate their temperature, the temperature difference across the entire container can be reduced, resulting in better heating uniformity.

[0009] Meanwhile, the two PTC heating elements are directly mounted to the container body, for example, by adhesive bonding or clamping with a pressure plate. This ensures a tight fit between the two PTC heating elements and the container wall, improving heat conduction and thus increasing heating efficiency while reducing costs. Furthermore, this structure allows multiple PTC heating elements to be individually mounted on the container body, eliminating the need to encapsulate them in a single metal casing, further reducing product costs.

[0010] In this design, at least two PTC heating elements are connected in parallel, allowing each element to be turned on and off independently. This enables the cooking container to achieve independent heating and temperature control in at least two zones, creating different power heating modes. This allows different areas of the container to simultaneously heat different foods at varying temperatures and power, resulting in more diverse heating modes and more flexible temperature control. Furthermore, the parallel connection of at least two PTC heating elements ensures that they do not interfere with each other; even if one fails, it will not affect the heating of the remaining PTC heating elements.

[0011] Meanwhile, in this application, a pressure plate is correspondingly provided on the outer wall surface of the container. The PTC heating element can be installed on the container through the pressure plate. The pressure plate can reliably fix the PTC heating element and prevent it from falling off the container. In addition, since the pressure plate is installed from the bottom of the PTC heating element, the PTC heating element can fit snugly against the container, thus ensuring the heating efficiency of the PTC heating element on the container. Furthermore, with this structure, multiple PTC heating elements can be pressed into place at once using the same pressure plate, thereby improving the installation efficiency of the PTC heating elements.

[0012] Of course, in other solutions, the PTC heating element can also be glued to the outer bottom wall of the container.

[0013] In addition, the cooking container in the above-mentioned technical solution provided in this application may also have the following additional technical features:

[0014] In any of the above embodiments, optionally, a rib is provided on the outer wall surface of the container body, and an installation groove is provided on the rib extending into the wall of the container body. The PTC heating element is installed in the installation groove. The PTC heating element is arranged along the height direction of the container body, or the PTC heating element is arranged along the lateral direction of the container body.

[0015] In this embodiment, raised ribs can be provided on the outer wall surface of the container to increase the local thickness of the container. Then, mounting grooves can be provided at the raised ribs to achieve embedded installation of the PTC heating element. By providing raised ribs, the local wall thickness of the container can be increased, allowing the PTC heating element to be embedded deeper. Simultaneously, this design also allows for thinner areas of the container where the PTC heating element is not needed, thereby reducing the manufacturing cost of the container.

[0016] In any of the above embodiments, optionally, the container body includes a container bottom wall and a container side wall, and the outer wall surface of the container bottom wall and / or the container side wall is provided with a recessed portion that is recessed into the interior of the container body, and a plurality of PTC heating components are installed in the recessed portion one by one.

[0017] In this embodiment, a recess is provided on the outer wall of the container body, specifically at the location where the PTC heating element needs to be installed. By providing the recess, the thickness of the protruding portion is reduced, allowing the PTC heating element to heat the food to a higher temperature, ensuring optimal cooking results. Furthermore, the recess also facilitates the installation and positioning of the PTC heating element, making its secure installation easier.

[0018] In any of the above embodiments, optionally, the container body includes a container bottom wall and a container side wall, and the container bottom wall and / or the container side wall are provided with at least two bends extending into the interior of the container body, the bends forming at least two recesses on the outer wall surface of the container body, and at least two PTC heating components are installed in the at least two recesses one-to-one.

[0019] In this embodiment, the bottom wall and / or side wall of the container can be bent upwards multiple times, thus forming multiple bends on the outer wall surface of the container. The formation of these multiple bends creates protrusions on the inner wall surface and recesses on the outer wall surface. This method allows for simple and convenient fabrication of the desired recesses on the bottom wall of the container, resulting in a relatively simple container structure. Optionally, in any of the above embodiments, the container includes a bottom wall and side walls, and at least two PTC heating elements are mounted on the bottom wall and / or side walls.

[0020] In this embodiment, the container body includes a bottom wall and a side wall. The PTC heating element can be installed on the side wall or the bottom wall, or both, to improve the overall heating efficiency of the product.

[0021] In any of the above embodiments, optionally, at least two PTC heating elements are provided on the side wall of the container, and the at least two PTC heating elements are located at at least two height positions along the height direction of the cooking container. At the same height position, one or more PTC heating elements are provided along the circumferential direction of the container body.

[0022] In this embodiment, multiple sets of PTC heating elements can be arranged from top to bottom on the side wall of the container. Each set of PTC heating elements consists of one or more PTC heating elements. Multiple PTC heating elements within the same set are arranged sequentially and at intervals along the circumference of the container. Because different sets of PTC heating elements are located at different heights, when a set of PTC heating elements is below the water level, it will remain in a heating state because the water is constantly absorbing heat. When the set of PTC heating elements is above the water level, due to the self-regulating temperature characteristics of PTC heating elements, it will quickly reach the control point and stop heating. Therefore, during the heating process, only the PTC heating elements below the water level are always heating. The total power of the product can vary with the water level, thus reducing heat loss and resulting in a higher heat conversion rate.

[0023] In any of the above embodiments, optionally, the Curie temperatures of at least two PTC heating elements are not equal, that is, the temperature control points of at least two PTC heating elements are different. This results in at least two regions on the outer wall surface of the food carrier having different power temperature control points. The different power temperature control points lead to different heating powers, allowing the same food carrier to be heated simultaneously with different powers. This enables heating of different regions at different temperatures (or different powers), thus allowing the simultaneous cooking of two different foods using the same food carrier. Of course, the temperature control points of at least two PTC heating elements can also be the same.

[0024] In any of the above embodiments, optionally, the PTC heating element includes: a PTC heating element; a first electrode and a second electrode, located on opposite sides of the PTC heating element, both the first electrode and the second electrode being connected to the PTC heating element, and both the first electrode and the second electrode being provided with terminals; the first electrode and the second electrode are respectively a first electrode plate and a second electrode plate disposed on opposite sides of the PTC heating element, and the PTC heating element further includes an insulating encapsulation, the PTC heating element, the first electrode plate and the second electrode plate being located within the insulating encapsulation; or the first electrode includes a conductive coating disposed on the outer wall surface of the container body, the cooking container further includes a pressure plate installed on the outer wall surface of the container body, at least two PTC heating elements are installed between the container body and the pressure plate, the second electrode is disposed on the pressure plate, or the pressure plate is a conductive plate, the second electrode is a conductive plate, the container body is a conductive container, the PTC heating element further includes an insulating coating disposed between the conductive coating and the outer wall surface of the container body, or the container body is a non-conductive container.

[0025] In this embodiment, the PTC heating element includes a PTC heating element. The PTC heating element generates heat when energized, and its resistance increases with increasing temperature. The first electrode and the second electrode serve as the two electrodes of the PTC heating element, used to connect to an external power source to enable energization of the PTC heating element.

[0026] In one specific embodiment, two electrode plates (i.e., a first electrode plate and a second electrode plate) can be arranged on both sides of the PTC heating element to serve as the first electrode and the second electrode. During installation, the PTC heating element (there can be one or more), the first electrode plate, and the second electrode plate can be encapsulated together in an insulating package to form an independent PTC heating assembly. The insulating package ensures that the PTC heating assembly is insulated and leak-proof, thereby improving the safety performance of the PTC heating assembly.

[0027] In one specific embodiment, a conductive coating can be applied to the outer wall of the container body, and the PTC heating element can be directly connected to the conductive coating, thus using the conductive coating as an electrode of the PTC heating element. Simultaneously, a pressure plate can be installed on the outside of the PTC heating element to mount it onto the container body. In this case, the pressure plate can be configured as a conductive plate to supply power to the PTC heating element. Alternatively, a conductive structure can be provided on the pressure plate to form a second electrode, using the conductive structure on the pressure plate to supply power to the PTC heating element. This configuration, which uses the conductive coating and pressure plate on the container body to supply power to the PTC heating element, simplifies the structure of the PTC heating assembly and reduces its thickness, thereby increasing the heating efficiency of the PTC heating assembly.

[0028] Furthermore, when setting one electrode of the PTC heating element as a conductive coating on the container body, in order to ensure the insulation of the container body and prevent it from becoming charged, the container body can be made into a non-conductive container. Of course, the container body can also be made of a conductive material. In this case, an insulating coating can be first applied to the outer wall of the container body, and then a conductive coating can be applied on top of the insulating coating. This will ensure the insulation of the container body and prevent leakage.

[0029] In any of the above embodiments, optionally, the pressure plate includes a bottom pressure plate and a side pressure plate, the bottom pressure plate is fixedly installed on the bottom wall of the container, and the side pressure plate is fixedly installed on the side wall of the container; a portion of at least two PTC heating components is installed between the bottom wall of the container and the bottom pressure plate, and another portion of at least two PTC heating components is installed between the side wall of the container and the side pressure plate.

[0030] In this embodiment, when pressing the PTC heating element onto the container body using pressure plates, multiple pressure plates can be used depending on the placement of the PTC heating element. For example, a side pressure plate can be used for the PTC heating element on the side wall, and a bottom pressure plate can be used for the PTC heating element on the bottom. Separate pressure plates simplify the product structure. Alternatively, in other solutions, a single integral pressure plate can be used to simultaneously press the PTC heating elements on both the side and bottom walls.

[0031] In any of the above embodiments, optionally, when the PTC heating component includes an insulating package, each insulating package contains one or more PTC heating elements, and each insulating package contains a first electrode plate and a second electrode plate; when the first electrode includes a conductive coating disposed on the outer wall surface of the container body, at least a portion of the multiple PTC heating elements share the same conductive coating and the same pressure plate.

[0032] In this embodiment, the same PTC heating element may include only one PTC heating element or multiple PTC heating elements. When a PTC heating element is formed by encapsulating it with an insulating package, each insulating package may encapsulate one or more PTC heating elements as needed, but each insulating package may only have one first electrode plate and one second electrode plate, that is, all PTC heating elements in each insulating package are connected to the same first electrode plate and the same second electrode plate.

[0033] When powering PTC heating elements through a conductive coating and pressure plate, a larger conductive coating and pressure plate can be used to power multiple PTC heating elements simultaneously. Alternatively, the conductive coating and pressure plate can be placed in multiple different areas to achieve zoned power supply for PTC heating elements in different areas.

[0034] In any of the above embodiments, optionally, at least a portion of at least two PTC heating components are mounted on the container sidewall. The container body further includes: a mounting protrusion disposed on the outer wall surface of the container sidewall, wherein a mounting plane is provided on the outer wall surface of the mounting protrusion away from the container sidewall for mounting the PTC heating components.

[0035] In this embodiment, since PTC heating elements are generally planar, when installing them on curved or other sidewalls (such as the sidewall of a wok), mounting protrusions can be provided on the container's sidewall, and then a mounting surface can be machined onto these protrusions to install the PTC heating element. This design facilitates the installation of the PTC heating element on non-planar surfaces, allowing for a better fit between the PTC heating element and the container's sidewall when installed on curved or other sidewalls, thereby ensuring efficient heating of the container's sidewall.

[0036] In any of the above embodiments, optionally, the number of mounting protrusions is multiple, and the multiple mounting protrusions are arranged in multiple rows at intervals along the circumference of the container body, and each row of mounting protrusions includes multiple mounting protrusions arranged along the height direction of the container body.

[0037] In this embodiment, in order to ensure the number of PTC heating elements installed on the side wall of the container, multiple sets of mounting protrusions can be provided on the side wall of the container from top to bottom, and multiple sets of mounting protrusions can be provided along the circumferential direction. This ensures the number of PTC heating elements installed on the side wall of the container, thereby ensuring heating efficiency.

[0038] When a PTC heating element is installed on the side wall of the container, a PTC heating element can be installed on the bottom wall of the container as needed, or other types of heating devices can be installed, or no heating device can be installed.

[0039] In any of the above embodiments, optionally, the container body includes at least one of a baking pan, a pot body, and a cup body. The baking pan may specifically be the pan structure of a grill or a multi-functional cooker; the pot body may specifically be the inner pot of a rice cooker or a frying pan; and the cup body may specifically be a car water cup or a conventional heated water cup, etc.

[0040] In any of the above embodiments, the PTC heating element may optionally include a PTC ceramic heating element, such as a PTC thermistor ceramic element.

[0041] The second aspect of this application provides a cooking device, including the cooking container provided in the first aspect.

[0042] The cooking apparatus provided in this application includes the cooking container provided in the first aspect of the technical solution. Therefore, the cooking apparatus has all the beneficial effects of the cooking container provided in the first aspect of the technical solution, which will not be elaborated here.

[0043] In any of the above embodiments, the cooking device may optionally include: a base, on which the cooking container is mounted; and an electronic control board, mounted on the base and connected to at least two PTC heating elements, for supplying power to the at least two PTC heating elements, and the electronic control board is capable of controlling each PTC heating element to work individually or controlling at least some of the at least two PTC heating elements to work simultaneously.

[0044] In this embodiment, the base supports the cooking container. The control board controls the operation of the cooking equipment. To facilitate zoned heating and temperature control, the control board can individually turn each PTC heating element on or off. Alternatively, the control board can control some or all of at least two PTC heating elements to operate simultaneously, thus making the heating modes of the cooking equipment more flexible and diverse.

[0045] The PTC heating element can be divided into multiple groups corresponding to different areas of the container, thereby enabling zoned heating control of the container in different areas.

[0046] In any of the above embodiments, optionally, the base includes: a bottom outer shell, one end of which is recessed into the interior to form a receiving groove for accommodating a cooking container, and the other end of which has an opening; a bottom cover, which is installed at the opening of the bottom outer shell to close the bottom outer shell; and an electronic control board installed between the bottom outer shell and the bottom cover.

[0047] In this embodiment, the cooking container can be sealed by the receiving groove, thereby improving the waterproof performance of the PTC heating element. In addition, an opening is provided on the other end of the bottom shell, and the bottom cover is installed at the opening of the bottom shell to close the bottom shell. The bottom shell can be opened by the bottom cover, thereby facilitating the installation of the control board and the like.

[0048] In any of the above embodiments, optionally, the cooking container and the base are connected by screws or snaps, and the cooking device also includes a seal disposed between the base and the cooking container to seal the gap between the base and the cooking container.

[0049] In this embodiment, the cooking container can be fixedly installed on the base using screws or other connection methods. For example, screws can be driven between the pressure plate and the base to secure the cooking container to the base, or a snap-fit ​​structure can be used to snap the cooking container onto the base. To prevent water from the outside of the bottom outer shell from entering the receiving groove, a seal can be provided between the base and the cooking container to seal the gap between them, thus further improving the waterproof performance of the cooking container.

[0050] In any of the above embodiments, optionally, the cooking device further includes: a support mounted on a base, the support having a glue groove; at least a portion of the cooking container is connected to the support by a sealant, the sealant being located within the glue groove.

[0051] In this embodiment, in order to avoid using screws on the cooking container, the cooking container can be first fixed to the base by a bracket, and then glue can be applied between the bracket and the cooking container to fix the cooking container to the bracket, thus securely fixing the cooking container to the base.

[0052] In any of the above embodiments, optionally, when the PTC heating element is powered by a pressure plate and the pressure plate and the container body are connected by a conductive fastener (such as a screw), to prevent the electricity on the pressure plate from leaking through the conductive fastener, an insulating pad and an insulating sleeve can be respectively provided on both sides of the pressure plate to achieve insulation between the pressure plate and the conductive fastener. The insulating pad and insulating sleeve can be directly fitted onto the conductive fastener during installation.

[0053] Optionally, the cooking equipment includes at least one of a multi-cooker, a grill, an electric pressure cooker, a rice cooker, and an electric frying pan.

[0054] Optionally, the container body is also provided with a handle to facilitate the movement of the container body.

[0055] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0056] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0057] Figure 1 One of the structural schematic diagrams of a cooking container according to an embodiment of this application is shown;

[0058] Figure 2 One of the structural schematic diagrams of a cooking device according to an embodiment of this application is shown;

[0059] Figure 3 A second schematic diagram of the structure of a cooking device according to an embodiment of this application is shown;

[0060] Figure 4 The third schematic diagram shows the structure of a cooking device according to an embodiment of this application;

[0061] Figure 5 One of the schematic diagrams of the structure of the PTC heating element of a cooking container according to an embodiment of this application is shown;

[0062] Figure 6A second schematic diagram of the structure of the PTC heating element of a cooking container according to an embodiment of this application is shown.

[0063] Figure 7 The third schematic diagram shows the structure of the PTC heating element of a cooking container according to an embodiment of this application;

[0064] Figure 8 A fourth schematic diagram of the structure of a cooking device according to an embodiment of this application is shown;

[0065] Figure 9 Fifth of the schematic diagrams shows the structure of a cooking device according to an embodiment of this application;

[0066] Figure 10 Sixth schematic diagram of the structure of a cooking device according to an embodiment of this application is shown;

[0067] Figure 11 The seventh schematic diagram shows the structure of a cooking device according to an embodiment of this application;

[0068] Figure 12 Eighth schematic diagram of the structure of a cooking device according to an embodiment of this application is shown;

[0069] Figure 13 A schematic diagram of the structure of a cooking device according to an embodiment of this application is shown in Figure 9;

[0070] Figure 14 A schematic diagram of the structure of a cooking device according to an embodiment of this application is shown in Figure 10.

[0071] Figure 15 An eleventh schematic diagram of the structure of a cooking device according to an embodiment of this application is shown;

[0072] Figure 16 A schematic diagram of the structure of a cooking device according to an embodiment of this application is shown as 12;

[0073] Figure 17 A schematic diagram of the structure of a cooking device according to an embodiment of this application is shown as thirteen;

[0074] Figure 18 Fourteenth schematic diagram of the structure of a cooking device according to an embodiment of this application is shown;

[0075] Figure 19 A schematic diagram of the structure of a cooking device according to an embodiment of this application is shown as Fifteen;

[0076] Figure 20 A schematic diagram of the structure of a cooking device according to an embodiment of this application is shown in Figure 16;

[0077] Figure 21A second schematic diagram of the structure of a cooking container according to an embodiment of this application is shown;

[0078] Figure 22 A schematic diagram of the structure of a cooking device according to an embodiment of this application is shown in Figure 17;

[0079] Figure 23 The eighteenth schematic diagram shows the structure of a cooking device according to an embodiment of this application;

[0080] Figure 24 A schematic diagram of the structure of a cooking device according to an embodiment of this application is shown as number nineteen;

[0081] Figure 25 The third schematic diagram shows the structure of a cooking container according to an embodiment of this application;

[0082] Figure 26 The fourth schematic diagram shows the structure of a cooking container according to an embodiment of this application;

[0083] Figure 27 Fifth schematic diagram of the structure of a cooking container according to an embodiment of this application is shown;

[0084] Figure 28 A schematic diagram of the parallel structure of the electronic control board and PTC heating element of a cooking device according to an embodiment of this application is shown;

[0085] Figure 29 This is illustration 20, a structural schematic diagram of a cooking apparatus according to an embodiment of this application. Reference numerals:

[0086] 1. Container body, 12. Container bottom wall, 14. Container side wall, 142. Mounting protrusion, 1422. Mounting plane, 16. Rib, 17. Recess, 18. Bending part, 2. PTC heating element, 22. PTC heating element, 24. First electrode, 242. Conductive coating, 2420. First terminal, 244. First electrode plate, 26. Second electrode, 260. Second terminal, 262. Second electrode plate, 282. Insulating coating, 284. Insulating encapsulation, 3. Pressure plate, 32. Bottom pressure plate, 34. Side pressure plate, 4. Electrical control board, 5. Wire assembly, 6. Base, 62. Bottom housing, 622. Receiving groove, 624. Opening, 64. Bottom cover, 7. Seal, 8. Bracket, 9. Sealant, 10. First screw, 112. Insulating sleeve, 114. Insulating pad. Detailed Implementation

[0087] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0088] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0089] The following reference Figures 1 to 29 This application describes cooking containers and cooking appliances provided according to some embodiments.

[0090] like Figures 1 to 29 As shown, an embodiment of the first aspect of this application provides a cooking container, including a container body 1 and at least two PTC heating elements 2. The at least two PTC heating elements 2 are mounted on the container body 1, and the at least two PTC heating elements 2 are connected in parallel to each other via a wire assembly 5 (e.g., Figure 1 As shown). Figures 1 to 4 As shown, at least two PTC heating elements 2 are mounted on the outer wall of the container body 1, and / or as shown in the diagram. Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 and Figure 19 As shown, at least two PTC heating elements 2 are at least partially embedded in the wall of the container body 1.

[0091] The cooking container provided in this application includes a container body 1 and at least two PTC heating elements 2. The container body 1 is used to hold food for heating. The surface of the container body 1 that contacts the food is the food-bearing surface, and the surface of the container body 1 facing away from the food-bearing surface is the heating surface. At least two PTC heating elements 2 are positioned corresponding to the outer wall surface (heating surface) of the container body 1. When energized, the at least two PTC heating elements 2 generate heat, thereby heating the container body 1, which can then heat the food placed on the container body 1, such as boiling the food, heating cold food, or boiling water. The PTC heating elements 2 can be installed on the outer wall surface of the container body 1, or partially or completely embedded within the wall of the container body 1. Embedding the PTC heating elements 2 within the wall of the container body 1 increases the contact area between the PTC heating elements 2 and the container body 1, thereby significantly improving the heat transfer efficiency of the PTC heating elements 2, resulting in faster heating of the container body 1, higher thermal efficiency, and greater energy savings. For example, the PTC heating element 2 can be molded together with the container body 1 using a mold.

[0092] Among them, the PTC heating element 2, also known as a positive temperature coefficient heating element, has the characteristic that its resistance increases with increasing temperature, meaning that the higher the temperature, the lower the power. When its temperature reaches the Curie temperature point, the heating power of the PTC heating element 2 is balanced with the heat dissipation power. At this time, if a load is applied (increasing heat dissipation and lowering the temperature), the power of the PTC heating element 2 will also increase, causing the temperature to rise again. Therefore, by utilizing the adaptive and self-temperature-regulating characteristics of the PTC heating element 2 as a heat source, the temperature fluctuation of the cooking equipment can be minimized. Furthermore, since multiple PTC heating elements 2 each have their own self-temperature regulation, the temperature difference of the entire container 1 can be reduced, and the heating uniformity can be improved.

[0093] Meanwhile, the two PTC heating elements 2 are directly mounted on the container body 1, for example, by adhesive bonding or by pressing with a pressure plate 3, to install the two PTC heating elements 2 onto the outer wall of the container body 1. This ensures that the two PTC heating elements 2 fit tightly against the outer wall of the container body 1, improving the heat conduction between them and thus increasing the product's heating efficiency and reducing its cost. Furthermore, this structure allows multiple PTC heating elements 2 to be directly mounted individually on the container body 1, eliminating the need to encapsulate them in a single metal casing, thereby further reducing product costs.

[0094] In this design, at least two PTC heating elements 2 are connected in parallel, allowing each PTC heating element 2 to be turned on and off independently. This enables the cooking container to achieve independent heating and temperature control in at least two zones, thus creating different power heating modes. This allows different areas of the container body 1 to simultaneously heat different foods at different temperatures and power, making the product's heating modes more diverse and its temperature control more flexible. Furthermore, the parallel connection of at least two PTC heating elements 2 ensures that they do not interfere with each other; even if one fails, it will not affect the heating of the other PTC heating elements 2.

[0095] Optionally, such as Figures 2 to 18 As shown, the cooking container also includes: a pressure plate 3, which is installed on the outer wall of the container body 1, and at least two PTC heating elements 2 are installed between the container body 1 and the pressure plate 3.

[0096] In this embodiment, a pressure plate 3 is correspondingly provided on the outer wall surface of the container body 1. The PTC heating element 2 can be installed on the container body 1 through the pressure plate 3. The pressure plate 3 can reliably fix the PTC heating element 2, preventing it from falling off the container body 1. Furthermore, since the pressure plate 3 is installed from the bottom of the PTC heating element 2, the PTC heating element 2 can fit snugly against the container body 1, thus ensuring the heating efficiency of the PTC heating element 2 on the container body 1. In addition, with this structure, multiple PTC heating elements 2 can be pressed into place at once using the same pressure plate 3, thereby improving the installation efficiency of the PTC heating element 2.

[0097] Of course, in other solutions, the PTC heating element 2 can also be glued to the outer bottom wall of the container body 1.

[0098] In any of the above embodiments, optionally, at least two PTC heating elements 2 have different temperature control points, or in other words, at least two PTC heating elements 2 have different Curie temperatures. This results in at least two regions on the outer wall surface of the container 1 having different power temperature control points. These different power temperature control points lead to different heating powers, allowing the same container 1 to be heated simultaneously with different powers. This enables the simultaneous cooking of two different ingredients using the same container 1. Of course, the temperature control points of at least two PTC heating elements 2 can also be the same.

[0099] In any of the above embodiments, optionally, as Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 and Figure 19 As shown, a raised rib 16 is provided on the outer wall surface of the container body 1, and a mounting groove extending into the wall of the container body 1 is provided on the raised rib 16. The PTC heating element 2 is installed in the mounting groove. Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 and Figure 19 As shown, the PTC heating element 2 is arranged along the height direction of the container body 1. Or, the PTC heating element 2 is arranged along the lateral direction of the container body 1 (e.g., ...). Figure 13 The embodiment shown in the figure is in which the PTC heating element 2 is embedded in the container body 1 along the lateral direction of the container body 1.

[0100] In this embodiment, ribs 16 can be provided on the outer wall surface of the container body 1 to increase the local thickness of the container body 1. Then, mounting grooves can be provided at the ribs 16 of the container body 1 to achieve embedded installation of the PTC heating element 2. By providing ribs 16, the local wall thickness of the container body 1 can be enhanced, allowing the PTC heating element 2 to be embedded deeper. Simultaneously, this design also allows for a thinner thickness in areas of the container body 1 where the PTC heating element 2 is not required, thereby reducing the processing cost of the container body 1.

[0101] In any of the above embodiments, optionally, as Figure 28 As shown, the container body 1 includes a container bottom wall 12 and a container side wall 14. The outer wall surface of the container bottom wall 12 and / or the container side wall 14 is provided with a recessed portion 17 that is recessed into the interior of the container body 1. Multiple PTC heating components 2 are installed in the recessed portion 17 one by one.

[0102] In this embodiment, a recess 17 is provided on the outer wall surface of the container body 1, that is, a recess 17 is provided at the location where the PTC heating element 2 needs to be installed on the container body 1. By providing the recess 17, the thickness of the protrusion can be reduced, allowing the PTC heating element 2 to heat the food to a higher temperature, thus ensuring the cooking effect. In addition, the recess 17 can also be used to position and install the PTC heating element 2, thereby facilitating the fixed installation of the PTC heating element 2.

[0103] In any of the above embodiments, optionally, as Figure 29 As shown, the container body 1 includes a container bottom wall 12 and a container side wall 14. At least two bent portions 18 extending into the interior of the container body 1 are provided on the container bottom wall 12 and / or the container side wall 14. The bent portions 18 form at least two recesses 17 on the outer wall surface of the container body 1. At least two PTC heating components are installed in the at least two recesses 17 one by one.

[0104] In this embodiment, the bottom wall and / or side wall of the container body 1 can be bent upwards multiple times, thus forming multiple bends 18 on the outer wall surface of the container body 1. The formation of these multiple bends 18 creates protrusions on the inner wall surface of the container body 1 and recesses 17 on the outer wall surface. This method allows for simple and convenient fabrication of the desired recesses 17 on the bottom wall of the container body 1, resulting in a relatively simple structure for the container body 1.

[0105] In any of the above embodiments, optionally, the container body 1 includes a container bottom wall 12 and a container side wall 14, such as... Figures 1 to 19 As shown, at least two PTC heating elements 2 are installed on the bottom wall 12 of the container. Figures 20 to 27 As shown, at least two PTC heating elements 2 are installed on the bottom wall 12 of the container. Alternatively, as shown... Figures 20 to 27As shown, PTC heating elements 2 are installed on both the side wall 14 and the bottom wall 12 of the container to improve the heating efficiency of the entire product.

[0106] In any of the above embodiments, optionally, as Figure 20 , Figure 21 , Figure 22 , Figure 24 and Figure 25 As shown, at least two PTC heating elements 2 are provided on the side wall 14 of the container, and the at least two PTC heating elements 2 are located at at least two height positions along the height direction of the cooking container. At the same height position, one or more PTC heating elements 2 are provided along the circumferential direction of the container body 1.

[0107] In this embodiment, multiple sets of PTC heating elements 2 can be arranged from top to bottom on the side wall 14 of the container. Each set of PTC heating elements 2 consists of one or more PTC heating elements 2. Multiple PTC heating elements 2 within the same set are arranged sequentially and at intervals along the circumference of the container body 1. In this scheme, since different sets of PTC heating elements 2 are located at different heights, when a set of PTC heating elements 2 is below the water level, it will remain in a heating state because the water is constantly absorbing heat. When the set of PTC heating elements 2 is above the water level, due to the self-regulating temperature characteristics of PTC, it will quickly reach the temperature control point and stop heating. Therefore, during the heating process, only the PTC heating elements 2 below the water level are always heating. The total power of the product can change with the water level, thus reducing heat loss and resulting in a higher heat conversion rate for the product.

[0108] In any of the above embodiments, optionally, as Figures 5 to 13 As shown, the PTC heating element 2 includes: a PTC heating element 22; a first electrode 24 and a second electrode 26, located on opposite sides of the PTC heating element 22. Both the first electrode 24 and the second electrode 26 are connected to the PTC heating element 22. The first electrode 24 is provided with a first terminal 2420, and the second electrode 26 is provided with a second terminal 260. Figure 5 , Figure 6 and Figure 7 As shown, the first electrode 24 and the second electrode 26 are respectively disposed on the first electrode plate 244 and the second electrode plate 262 on opposite sides of the PTC heating element 22. The PTC heating assembly 2 also includes an insulating encapsulation 284, in which the PTC heating element 22, the first electrode plate 244, and the second electrode plate 262 are located. Or as... Figure 3 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, the first electrode 24 includes a conductive coating 242 disposed on the outer wall surface of the container body 1. The cooking container also includes a pressure plate 3, which is installed on the outer wall surface of the container body 1. At least two PTC heating elements 2 are installed between the container body 1 and the pressure plate 3. The second electrode 26 is disposed on the pressure plate 3, or the pressure plate 3 is a conductive plate, the second electrode 26 is a conductive plate, the container body 1 is a conductive container, and the PTC heating element 2 also includes an insulating coating 282 disposed between the conductive coating 242 and the outer wall surface of the container body 1, or the container body 1 is a non-conductive container.

[0109] In this embodiment, the PTC heating element 2 includes a PTC heating element 22. The PTC heating element 22 can generate heat when energized, and its resistance can increase as its temperature rises. The first electrode 24 and the second electrode 26 serve as the two electrodes of the PTC heating element 22, and are used to connect to an external power source to enable the PTC heating element 22 to be energized.

[0110] In one specific embodiment, two electrode plates (i.e., a first electrode plate 244 and a second electrode plate 262) can be arranged on both sides of the PTC heating element 22 to serve as the first electrode 24 and the second electrode 26. During installation, the PTC heating element 22 (there can be one or more), the first electrode plate 244, and the second electrode plate 262 can be encapsulated together in an insulating package 284 to form an independent PTC heating assembly 2. The insulating package 284 can ensure that the PTC heating assembly 2 is insulated and does not leak electricity, thereby improving the safety performance of the PTC heating assembly 2.

[0111] In one specific embodiment, such as Figures 8 to 13 As shown, a conductive coating 242 can be provided on the outer wall surface of the container body 1, and the PTC heating element 22 can be directly connected to the conductive coating 242, thus using the conductive coating 242 as an electrode of the PTC heating element 22. Simultaneously, a pressure plate 3 can be installed on the outside of the PTC heating element 22 to mount it onto the container body 1. In this case, the pressure plate 3 can be configured as a conductive plate to supply power to the PTC heating element 22. Alternatively, a conductive structure can be provided on the pressure plate 3 to form a second electrode 26, using the conductive structure on the pressure plate 3 to supply power to the PTC heating element 22. This configuration, which uses the conductive coating 242 on the container body 1 and the pressure plate 3 to supply power to the PTC heating element 22, simplifies the structure of the PTC heating assembly 2 and reduces its thickness, thereby increasing the heating efficiency of the PTC heating assembly 2.

[0112] Furthermore, when one electrode of the PTC heating element 2 is set as the conductive coating 242 on the container body 1, in order to ensure the insulation of the container body 1 and prevent the container body 1 from becoming charged, it can be done as follows: Figure 11 , Figure 12and Figure 13 As shown, if container body 1 is set as a non-conductive container, then an insulating coating 282 is not required on container body 1. Of course, container body 1 can also be made of a conductive material; in this case, it can be as follows... Figure 8 , Figure 9 and Figure 10 As shown, an insulating coating 282 is first applied to the outer wall of the container body 1, and then a conductive coating 242 is applied on the insulating coating 282. This ensures the insulation of the container body 1 and prevents leakage of the container body 1.

[0113] In any of the above embodiments, optionally, as Figure 20 , Figure 21 and Figure 22 As shown, the pressure plate 3 includes a bottom pressure plate 32 and a side pressure plate 34. The bottom pressure plate 32 is fixedly installed on the bottom wall 12 of the container, and the side pressure plate 34 is fixedly installed on the side wall 14 of the container. At least two PTC heating elements 2 are partially installed between the bottom wall 12 of the container and the bottom pressure plate 32, and at least two other parts of the PTC heating elements 2 are installed between the side wall 14 of the container and the side pressure plate 34.

[0114] In this embodiment, when the PTC heating element 2 is pressed onto the container body 1 using the pressure plate 3, multiple pressure plates 3 can be set according to the installation position of the PTC heating element 2. For example, a side pressure plate 34 can be set for the PTC heating element 2 on the side wall, and a bottom pressure plate 32 can be set for the PTC heating element 2 on the bottom. By separately setting the pressure plates 3, the structure of the product can be made simpler and more convenient. Of course, in other solutions, a single integral pressure plate 3 can also be used to press the PTC heating elements 2 on both the side wall and the bottom wall simultaneously.

[0115] In any of the above embodiments, optionally, as Figure 5 and Figure 6 As shown, when the PTC heating element 2 includes an insulating package 284, each insulating package 284 contains one or more PTC heating elements 22, and each insulating package 284 contains a first electrode plate and a second electrode plate. When the first electrode 24 includes a conductive coating 242 disposed on the outer wall surface of the container body 1, at least a portion of the multiple PTC heating elements 22 share the same conductive coating 242 and the same pressure plate 3.

[0116] In this embodiment, the same PTC heating element 2 may include only one PTC heating element 22 or multiple PTC heating elements 22. When a PTC heating element 2 is formed by encapsulating it with an insulating package 284, each insulating package 284 may encapsulate one or more PTC heating elements 22 as needed, but each insulating package 284 may only have one first electrode plate and one second electrode plate, that is, all PTC heating elements 22 in each insulating package 284 are connected to the same first electrode plate and the same second electrode plate.

[0117] When powering the PTC heating element 22 through the conductive coating 242 and the pressure plate 3, a larger conductive coating 242 and pressure plate 3 can be used to power multiple PTC heating elements 22 simultaneously. Alternatively, the conductive coating 242 and pressure plate 3 can be placed in multiple different areas to achieve zoned power supply for the PTC heating elements 22 in different areas.

[0118] In any of the above embodiments, optionally, as Figure 23 , Figure 24 , Figure 25 , Figure 26 and Figure 27 As shown, the container body 1 includes a container sidewall 14, at least a portion of at least two PTC heating elements 2 are mounted on the container sidewall 14, and the container body 1 further includes: a mounting protrusion 142 disposed on the outer wall surface of the container sidewall 14, and a mounting plane 1422 disposed on the outer wall surface of the mounting protrusion 142 away from the container sidewall 14 for mounting the PTC heating elements 2.

[0119] In this embodiment, since the PTC heating element 2 is generally a planar structure, when installing the PTC heating element 2 on a curved or other side wall (such as the side wall of a wok), a mounting protrusion 142 can be provided on the container side wall 14, and then a mounting plane 1422 can be machined on the mounting protrusion 142 to install the PTC heating element 2. This arrangement facilitates the installation of the PTC heating element 2 on non-planar surfaces, allowing the PTC heating element 2 to fit better with the container side wall 14 when installed on curved or other surfaces, thereby ensuring the heating efficiency of the container side wall 14.

[0120] In any of the above embodiments, optionally, as Figure 23 , Figure 24 , Figure 25 , Figure 26 and Figure 27 As shown, there are multiple mounting protrusions 142, which are arranged in multiple rows along the circumference of the container body 1. Each row of mounting protrusions 142 includes multiple mounting protrusions 142 arranged along the height direction of the container body 1.

[0121] In this embodiment, in order to ensure the number of PTC heating components 2 installed on the container sidewall 14, multiple sets of mounting protrusions 142 can be provided on the sidewall of the container body 1 from top to bottom, and multiple sets of mounting protrusions 142 can be provided along the circumferential direction. This can ensure the number of PTC heating components 2 installed on the container sidewall 14, thereby ensuring heating efficiency.

[0122] When a PTC heating element 2 is installed on the side wall 14 of the container, the PTC heating element 2 can be installed on the bottom wall 12 of the container as needed, or other types of heating devices can be installed, or no heating device can be installed.

[0123] In any of the above embodiments, optionally, the container body 1 includes a baking tray (e.g., Figures 8 to 22 As shown), pot body (such as) Figures 23 to 27 (As shown) and at least one of the following: a baking pan (as shown) and a cup body. The baking pan can specifically be the pan structure of a grill or multi-functional cooker, and the cooker body can specifically be the inner pot of a rice cooker or a frying pan. The cup body can specifically be a car water bottle or a regular heated water bottle, etc.

[0124] In any of the above embodiments, the PTC heating element 2 may optionally include a PTC ceramic heating element, such as a PTC thermistor ceramic element.

[0125] like Figures 1 to 28 As shown, an embodiment of the second aspect of this application provides a cooking apparatus, including the cooking container provided in the first aspect embodiment.

[0126] The cooking apparatus provided in this application includes the cooking container provided in the first aspect embodiment. Therefore, the cooking apparatus has all the beneficial effects of the cooking container provided in the first aspect embodiment, which will not be repeated here.

[0127] In any of the above embodiments, optionally, as Figures 6 to 28 As shown, the cooking device also includes: a base 6, on which the cooking container is mounted; and an electronic control board 4, on which the base 6 is mounted and connected to at least two PTC heating elements 2 to supply power to the at least two PTC heating elements 2, and the electronic control board 4 is capable of controlling each PTC heating element 2 to work individually or controlling at least some of the at least two PTC heating elements 2 to work simultaneously.

[0128] In this embodiment, the base 6 is used to support the cooking container. The control board 4 is used to control the operation of the cooking equipment. To facilitate zoned heating and temperature control, the control board 4 can control each PTC heating element 2 to turn on or off individually. Of course, the control board 4 can also control some or all of at least two PTC heating elements 2 to work simultaneously, thereby making the heating mode of the cooking equipment more flexible and diverse.

[0129] Among them, the PTC heating component 2 can be divided into multiple groups corresponding to different areas of the container body 1, so as to realize the zoned heating control of the container in different areas.

[0130] In any of the above embodiments, optionally, as Figures 6 to 22 As shown, the base 6 includes: a bottom outer shell 62, one end of which is recessed into the interior of the bottom outer shell 62 to form a receiving groove 622 for accommodating and installing a cooking container, and an opening 624 on the other end of the bottom outer shell 62; a bottom cover 64, which is installed at the opening 624 of the bottom outer shell 62 to close the bottom outer shell 62; and an electronic control board 4 installed between the bottom outer shell 62 and the bottom cover 64.

[0131] In this embodiment, the cooking container can be sealed by the receiving groove 622, thereby improving the waterproof performance of the PTC heating element 2. In addition, an opening 624 is provided on the other end of the bottom shell 62, and the bottom cover 64 is installed at the opening 624 of the bottom shell 62 to seal the bottom shell 62. The space of the bottom shell 62 can be opened by the bottom cover 64, thereby facilitating the installation of the electronic control board 4, etc.

[0132] In any of the above embodiments, optionally, as Figures 6 to 22 As shown, the cooking container and the base 6 are connected by screws or clips. The cooking device also includes a seal 7, which is disposed between the base 6 and the cooking container to seal the gap between the base 6 and the cooking container.

[0133] In this embodiment, the cooking container can be fixedly installed on the base 6 by means of screws or other connection methods. For example, screws can be driven between the pressure plate 3 and the base 6 to fix the cooking container on the base 6, or a structure such as a snap-fit ​​can be used to snap the cooking container onto the base 6. At this time, in order to prevent water from the outside of the bottom outer shell 62 from entering the receiving groove 622, a sealing element 7 can be provided between the base 6 and the cooking container to seal the gap between the base 6 and the cooking container, thereby further improving the waterproof performance of the cooking container.

[0134] In any of the above embodiments, optionally, as Figure 11 , Figure 12 and Figure 13 As shown, the cooking equipment also includes: a support 8, mounted on the base 6, the support 8 having a glue groove; at least a portion of the cooking container is connected to the support 8 by a sealant 9, the sealant 9 being located within the glue groove.

[0135] In this embodiment, in order to avoid using screws on the cooking container, the cooking container can be first positioned and installed on the base 6 using the bracket 8. Then, glue can be applied between the bracket 8 and the cooking container to fix the cooking container and the bracket 8, thereby securely fixing the cooking container to the base 6.

[0136] In any of the above embodiments, optionally, when the PTC heating element 2 is powered by the pressure plate 3, and the pressure plate 3 and the container body 1 are connected by a conductive fastener (such as the first screw 10), to prevent the electricity on the pressure plate 3 from leaking through the conductive fastener, it can be done as follows: Figures 8 to 10 As shown, insulating pads 114 and insulating sleeves 112 are respectively provided on both sides of the pressure plate 3 to achieve insulation between the pressure plate 3 and the conductive fastener. The insulating pads 114 and insulating sleeves 112 can be directly fitted onto the conductive fastener during installation.

[0137] Optionally, the cooking equipment includes at least one of a multi-cooker, a grill, an electric pressure cooker, a rice cooker, and an electric frying pan.

[0138] Optionally, a handle is also provided on the container body 1 to facilitate the movement of the container body 1.

[0139] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0140] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A cooking container, characterized in that, include: container body; At least two PTC heating elements are installed on the container body, and the at least two PTC heating elements are connected in parallel with each other. The at least two PTC heating elements are installed on the outer wall of the container body, and / or at least a portion of the at least two PTC heating elements are embedded in the wall of the container body. A pressure plate is installed on the outer wall of the container body, and at least two of the PTC heating elements are installed between the container body and the pressure plate.

2. The cooking container according to claim 1, characterized in that, The outer wall of the container is provided with a raised rib, and the raised rib is provided with a mounting groove extending into the wall of the container. The PTC heating element is installed in the mounting groove. The PTC heating element is arranged along the height direction of the container or along the lateral direction of the container.

3. The cooking container according to claim 1, characterized in that, The container body includes a container bottom wall and a container side wall. At least two bent portions extending into the interior of the container body are provided on the container bottom wall and / or the container side wall. The bent portions form at least two recesses on the outer wall surface of the container body. At least two PTC heating components are installed in the at least two recesses one-to-one.

4. The cooking container according to claim 1, characterized in that, The container body includes a bottom wall and a side wall, and at least two PTC heating elements are installed on the bottom wall and / or the side wall.

5. The cooking container according to claim 4, characterized in that, At least two PTC heating elements are provided on the side wall of the container. The at least two PTC heating elements are located at at least two height positions along the height direction of the cooking container. At the same height position, one or more PTC heating elements are provided along the circumferential direction of the container body.

6. The cooking container according to claim 1, characterized in that, At least two of the PTC heating elements have different Curie temperatures.

7. The cooking container according to claim 1, characterized in that, The pressure plate includes a bottom pressure plate and a side pressure plate. The bottom pressure plate is fixedly installed on the bottom wall of the container, and the side pressure plate is fixedly installed on the side wall of the container. At least two portions of the PTC heating elements are installed between the bottom wall of the container and the bottom pressure plate, and at least two portions of the PTC heating elements are installed between the side wall of the container and the side pressure plate.

8. The cooking container according to claim 1, characterized in that, The PTC heating element includes: PTC heating element; The first electrode and the second electrode are located on opposite sides of the PTC heating element. Both the first electrode and the second electrode are connected to the PTC heating element. Both the first electrode and the second electrode are provided with terminals. The first electrode and the second electrode are respectively disposed on opposite sides of the PTC heating element, forming a first electrode plate and a second electrode plate. The PTC heating assembly further includes an insulating encapsulation, in which the PTC heating element, the first electrode plate, and the second electrode plate are located; or The first electrode includes a conductive coating disposed on the outer wall surface of the container body. The cooking container also includes a pressure plate installed on the outer wall surface of the container body. At least two PTC heating elements are installed between the container body and the pressure plate. The second electrode is disposed on the pressure plate, or the pressure plate is a conductive plate, the second electrode is the conductive plate, and the container body is a conductive container. The PTC heating element also includes an insulating coating disposed between the conductive coating and the outer wall surface of the container body, or the container body is a non-conductive container.

9. The cooking container according to claim 8, characterized in that, When the PTC heating component includes the insulating package, each insulating package contains one or more PTC heating elements, and each insulating package contains a first electrode plate and a second electrode plate. When the first electrode includes a conductive coating disposed on the outer wall surface of the container body, at least a portion of the multiple PTC heating elements share the same conductive coating and the same pressure plate.

10. The cooking container according to any one of claims 1 to 9, characterized in that, The container body includes a container sidewall, and at least two PTC heating elements are at least partially mounted on the container sidewall. The container body also includes: A mounting protrusion is provided on the outer wall surface of the container sidewall. The mounting protrusion has a mounting plane on the outer wall surface away from the container sidewall for mounting the PTC heating element.

11. The cooking container according to claim 10, characterized in that, The number of mounting protrusions is multiple, and the multiple mounting protrusions are arranged in multiple columns at intervals along the circumference of the container body. Each column of mounting protrusions includes multiple mounting protrusions arranged along the height direction of the container body.

12. The cooking container according to any one of claims 1 to 9, characterized in that, The container body includes at least one of a baking pan, a pot body, and a cup body; and / or The PTC heating element includes a PTC ceramic heating element.

13. A cooking appliance, characterized in that, Including the cooking container as described in any one of claims 1 to 12.

14. The cooking apparatus according to claim 13, characterized in that, The cooking equipment also includes: A base on which the cooking container is mounted; An electronic control board is mounted on the base and connected to at least two of the PTC heating elements to supply power to the at least two PTC heating elements. The electronic control board is capable of controlling each PTC heating element to work independently or controlling at least some of the at least two PTC heating elements to work simultaneously.

15. The cooking apparatus according to claim 14, characterized in that, The base includes: The bottom outer shell has one end recessed into the interior to form a receiving groove for accommodating and mounting the cooking container, and the other end of the bottom outer shell has an opening; A bottom cover is installed at the opening of the bottom outer casing to close the bottom outer casing; The electronic control board is installed between the bottom outer shell and the bottom cover.

16. The cooking apparatus according to claim 14, characterized in that, The cooking container is connected to the base by screws or clips. The cooking device also includes a seal disposed between the base and the cooking container to seal the gap between the base and the cooking container.

17. The cooking apparatus according to claim 16, characterized in that, Also includes: A bracket is mounted on the base, and the bracket is provided with a glue groove. At least a portion of the cooking container is connected to the support by a sealant located within the sealant groove.

18. The cooking apparatus according to any one of claims 13 to 17, characterized in that, The cooking equipment includes at least one of a multi-functional pot, a grill, an electric pressure cooker, a rice cooker, and an electric frying pan.

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