Cooking utensil and cooking equipment

Abstract

The utility model provides a cooking utensil and cooking equipment. The cooking utensil comprises a food material bearing part and a cooking part, the at least two PTC heating assemblies are mounted corresponding to the outer wall surface of the food material bearing part and are used for heating the food material bearing part; wherein the at least two PTC heating assemblies are arranged at intervals in the first direction of the food material bearing part, and each PTC heating assembly can be independently opened and closed. By means of the arrangement, partitioned heating and partitioned temperature control of the food material bearing piece can be achieved, and therefore the heating modes of products are more diversified.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of household appliances, in particular, to a cooking appliance and a cooking device. BACKGROUND

[0002] The cooking device in the related scheme can only perform overall heating and cannot perform partition heating, so that the cooking device cannot heat different food materials at the same time. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve the problem that the cooking device in the prior art or related art cannot perform partition heating, so that the cooking device cannot heat different food materials at the same time.

[0004] To this end, a first aspect of the present application provides a cooking appliance.

[0005] A second aspect of the present application provides a cooking device.

[0006] The technical scheme of the first aspect of the present application provides a cooking appliance, which comprises a food material bearing member and at least two PTC heating assemblies. The food material bearing member is used for bearing food materials to heat the food materials. The surface of the food material bearing member for contacting the food materials is a food material bearing surface, and the surface of the food material bearing member away from the food material bearing surface is a heating surface. The at least two PTC heating assemblies are arranged corresponding to the outer wall surface (heating surface) of the food material bearing member. The at least two PTC heating assemblies can generate heat when powered on, thereby heating the food material bearing member, so that the food materials placed on the food material bearing member can be heated, such as being boiled, or being heated from cold, or being boiled to open, etc.

[0007] According to the cooking appliance provided by the present application, the cooking appliance comprises a food material bearing member and at least two PTC heating assemblies. The food material bearing member is used for bearing food materials to heat the food materials. The surface of the food material bearing member for contacting the food materials is a food material bearing surface, and the surface of the food material bearing member away from the food material bearing surface is a heating surface. The at least two PTC heating assemblies are arranged corresponding to the outer wall surface (heating surface) of the food material bearing member. The at least two PTC heating assemblies can generate heat when powered on, thereby heating the food material bearing member, so that the food materials placed on the food material bearing member can be heated, such as being boiled, or being heated from cold, or being boiled to open, etc.

[0008] Each PTC heating assembly can be independently turned on and off, so that the cooking appliance can realize independent heating and temperature control of at least two regions, thereby forming different power heating modes, so that different regions of the food material bearing member can heat different food materials at different temperatures and powers at the same time, so that the heating mode of the product is more diversified, and the temperature control of the product is more flexible.

[0009] The at least two PTC heating assemblies are arranged along the first direction of the food material bearing member, which can reduce the heat interference between the two PTC heating assemblies, and at the same time, space is reserved for the heat insulation structure between the two regions.

[0010] At least two PTC heating components have different Curie temperatures, that is, the temperature control points of at least two PTC heating components are different, so that there are at least two regions on the outer wall surface of the food material bearing member with different power temperature control points, and the different power temperature control points result in different heating powers, so that the same food material bearing member can be heated at different powers at the same time, so that different regions can be heated at different temperatures (or different powers), so that the cooking of two different food materials can be realized at the same time by the same food material bearing member. Of course, the temperature control points of at least two PTC heating components can also be the same.

[0011] In addition, the cooking appliance in the above technical solution provided by the present application can also have the following additional technical features:

[0012] In any of the above embodiments, optionally, at least one heat insulation structure is arranged on the outer wall surface of the food material bearing member, and the PTC heating component is arranged on one side of the heat insulation structure along the first direction.

[0013] The outer wall surface of the food material bearing member is provided with a heat insulation structure. The outer wall surface of the food material bearing member can be divided into multiple different regions by the heat insulation structure. During installation, different PTC heating components can be installed at intervals on both sides of the heat insulation structure, that is, adjacent PTC heating components are separated by the heat insulation structure. On the one hand, the heat insulation structure can ensure the spacing between PTC heating components, and on the other hand, the heat insulation structure can reduce the heat transfer between two regions arranged adjacent to each other, that is, reduce the heat interference between two adjacent PTC heating components. In this way, the temperature control of the two adjacent regions due to the mutual interference of heat can be avoided. The heat insulation structure can be a heat insulation part made of a material with poor heat conduction effect, or an air heat insulation structure formed by a groove or a hollow structure.

[0014] In any of the above embodiments, optionally, the heat insulation structure divides the outer wall surface into at least two regions along the first direction, and at least two PTC heating components are arranged one by one corresponding to the at least two regions. In this embodiment, the number of heat insulation structures can be set as needed, but is generally two. The number of regions separated by the heat insulation structure is consistent with the number of PTC heating components, that is, one PTC heating component is arranged in one region. Further, the Curie temperatures of the plurality of PTC heating components are different, so that the temperature control points of each region are different, so that each region can heat food materials at different powers.

[0015] In any of the above embodiments, optionally, the heat insulation structure includes a groove or a hollow structure arranged on the outer wall surface of the food material bearing member.

[0016] In this embodiment, the heat insulation structure is specifically an air heat insulation structure formed by a groove or a hollow structure. By arranging a groove or a hollow structure between the two adjacent regions, the wall thickness of the food material carrier in the heat insulation region can be reduced, so that a structure for containing air can be formed between the two adjacent regions to prevent heat transfer between the two regions.

[0017] In any of the above embodiments, optionally, the width of the heat insulation structure is greater than or equal to 2 mm and less than or equal to 50 mm. Alternatively, a heat insulation region is arranged between any two adjacent regions. The width of the heat insulation region is greater than or equal to 2 mm and less than or equal to 50 mm.

[0018] In this embodiment, by arranging the heat insulation region or the heat insulation structure, heat transfer between the two adjacent regions can be reduced, so that the temperature control of the two adjacent regions due to mutual interference of heat can be avoided. If the width of the heat insulation region or the heat insulation structure is too large, the heating area of the food material carrier will be reduced, and if the width of the heat insulation region or the heat insulation structure is too small, the heat insulation effect will be poor. Therefore, the width of the heat insulation region or the heat insulation structure can be greater than or equal to 2 mm and less than or equal to 50 mm, so that the heating area of the food material carrier is moderate and the heat insulation effect is also good.

[0019] In any of the above embodiments, optionally, the wall thickness of the food material carrier in the heat insulation region is less than the wall thickness of the food material carrier in the remaining regions, that is, the wall thickness of the heat insulation region is reduced in this application, and it can also be understood that a groove or a hollow structure is formed between the two adjacent regions to form air heat insulation.

[0020] In any of the above embodiments, optionally, the plurality of PTC heating components are connected in parallel with each other, and / or the PTC heating component includes one or more PTC heating elements, and the plurality of PTC heating elements in each PTC heating component are connected in parallel or in series with each other.

[0021] In this embodiment, at least two PTC heating components form a parallel circuit, so that at least two PTC heating components can work independently of each other without interfering with each other, so that at least two PTC heating components can be turned on and off individually, so that the working state of at least two PTC heating components can be controlled according to actual needs, thereby realizing individual heating control of each region of the food material carrier and enabling the food material carrier to be controlled by temperature zoning.

[0022] For each PTC heating component, it can include only one PTC heating element or a plurality of PTC heating elements. For the scheme in which a plurality of PTC heating elements are included, the plurality of PTC heating elements can be connected in parallel or in series with each other, but preferably, the plurality of PTC heating elements are connected in parallel with each other, so that the temperature control of each region is more flexible.

[0023] Exemplarily, all the PTC heating elements in the plurality of PTC heating assemblies are connected in parallel with each other through the lead assembly.

[0024] In the plurality of PTC heating elements arranged corresponding to the same region, the Curie temperatures of the PTC heating elements can be different or the same.

[0025] In any of the above embodiments, optionally, the PTC heating assembly comprises one or more PTC heating elements, the PTC heating element comprises a PTC heating element and an electrode sheet, the electrode sheet is connected with the PTC heating element to supply power to the PTC heating element, and an insulating protective film is further wrapped on the outer surface of the PTC heating element.

[0026] In this embodiment, the PTC heating element can be powered to heat, thereby achieving heating of the food material bearing element. The electrode sheet serves as a wiring structure of the PTC heating element and is used to connect with the power supply to enable the PTC heating element to be powered. Meanwhile, the insulating protective film is further arranged on the PTC heating element, which can avoid electric leakage of the PTC heating element and improve the waterproof and dustproof performance of the PTC heating element.

[0027] In any of the above embodiments, optionally, the food material bearing element comprises at least one of a baking tray, a pot body and a cup body.

[0028] In this embodiment, the food material bearing element is used to contact with the food material to achieve cooking of the food material. The food material bearing element can be in the form of a pot body, a baking tray or a cup body, etc.

[0029] In any of the above embodiments, optionally, the PTC heating assembly is detachably mounted on the food material bearing element, or the PTC heating assembly and the food material bearing element are separately arranged.

[0030] In this embodiment, the mounting mode of the PTC heating assembly is not limited, which can be directly fixed and mounted on the food material bearing element by means of screws, buckles or welding, etc., or can be mounted on other components and completely separated from the food material bearing element, thereby forming a separate arrangement with the food material bearing element, so as to facilitate maintenance and replacement of the PTC heating assembly.

[0031] In any of the above embodiments, optionally, the PTC heating assembly comprises a PTC ceramic heating assembly.

[0032] The first direction can be the length direction of the food material bearing element, in which case the food material bearing element can be divided into zones for temperature control along the length direction. The first direction can also be the radial direction of the food material bearing element, in which case the food material bearing element can achieve annular zone temperature control.

[0033] In any of the above embodiments, optionally, the cooking utensil further comprises a pressing plate mounted to the food material bearing member, and the at least two PTC heating assemblies are mounted between the pressing plate and the food material bearing member.

[0034] In this technical solution, the pressing plate can be mounted at the bottom of the food material bearing member, and the at least two PTC heating assemblies are clamped between the pressing plate and the food material bearing member. In this way, the clamping installation of the at least two PTC heating assemblies can be achieved, and no installation structure needs to be arranged on the at least two PTC heating assemblies, thereby facilitating the structural design of the product.

[0035] In this technical solution, the at least two PTC heating assemblies abut against the food material bearing member, so that the at least two PTC heating assemblies can achieve contact heating. In other solutions, a heat-conducting member can also be arranged between the PTC heating assembly and the food material bearing member to conduct the heat generated by the PTC heating assembly to the corresponding area of the food material bearing member.

[0036] In any of the above embodiments, optionally, a separation rib is arranged on the inner wall surface of the food material bearing member, the separation rib is used to separate the inner wall surface of the food material bearing member into at least two sub-wall surfaces along a first direction, and the at least two PTC heating assemblies and the at least two sub-wall surfaces are arranged one by one.

[0037] In this technical solution, the separation rib is arranged on the food material bearing surface of the food material bearing member, and the separation rib is used to separate the food material bearing surface into at least two sub-wall surfaces. In this way, the user can more obviously distinguish the boundaries between different sub-wall surfaces during cooking. At the same time, by arranging the separation rib, the food materials on different sub-wall surfaces can also be prevented from moving mutually.

[0038] The second aspect of the present application provides a cooking device comprising the cooking utensil provided in the first aspect.

[0039] According to the cooking device provided by the present application, since it comprises the cooking utensil provided in the first aspect, the cooking device has all the beneficial effects of the cooking utensil provided in the first aspect, which will not be described here again.

[0040] In any of the above embodiments, optionally, the cooking device further comprises a base assembly, and the cooking utensil is mounted to the base assembly. The base assembly comprises an electric control board connected to the at least two PTC heating assemblies to supply power to the at least two PTC heating assemblies, and the electric control board can control each PTC heating assembly to work independently or control at least part of the at least two PTC heating assemblies to work simultaneously.

[0041] In this embodiment, the base assembly is used to support the installation of the cooking utensil. The electric control board is used to control the operation of the cooking device. In order to facilitate the heating and temperature control of the partition, the electric control board can control each PTC heating assembly to be opened or closed individually. Of course, the electric control board can also control part or all of the at least two PTC heating assemblies to work at the same time, so as to make the heating mode of the cooking device more flexible and diverse.

[0042] Wherein, limited by the size of the cooking device, the number of PTC heating assemblies can be set to 2, so as to divide the food material carrier into 2 areas for temperature control respectively.

[0043] In any of the above embodiments, optionally, the base assembly comprises: a bottom shell, one end of the bottom shell is recessed towards the inside of the bottom shell to form a containing groove for containing the cooking utensil, and the other end of the bottom shell is provided with an opening; a bottom cover installed at the opening of the bottom shell to close the bottom shell; the electric control board is installed between the bottom shell and the bottom cover; a sealing element is arranged between the base assembly and the cooking utensil to seal the gap between the base assembly and the cooking utensil.

[0044] In this embodiment, through the containing groove, the closed installation of the cooking utensil can be realized, so as to improve the waterproof performance of the PTC heating assembly. At the same time, in order to avoid water outside the bottom shell entering the containing groove, a sealing element can be arranged between the base assembly and the cooking utensil to seal the gap between the base assembly and the cooking utensil, so as to further improve the waterproof performance of the cooking utensil. In addition, the other end of the bottom shell is provided with an opening, and the bottom cover is installed at the opening of the bottom shell to close the bottom shell. The space of the bottom shell can be opened through the bottom cover, so as to facilitate the installation of the electric control board and the like.

[0045] In any of the above embodiments, optionally, the cooking device comprises at least one of a multifunctional pot, a frying and baking machine, an electric pressure cooker and an electric rice cooker.

[0046] In any of the above embodiments, optionally, a handle is further arranged on the food material carrier to facilitate the movement of the food material carrier.

[0047] Additional aspects and advantages of the present application will become apparent from the following description part, or will be understood by those skilled in the art through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0048] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0049] Figure 1 One of the structure schematic diagrams of the cooking utensil of one embodiment of the present application is shown;

[0050] Figure 2One of structural schematic diagrams of the food material bearing member of one embodiment of the present application is shown.

[0051] Figure 3 One of structural schematic diagrams of the food material bearing member of one embodiment of the present application is shown.

[0052] Figure 4 One of structural schematic diagrams of the food material bearing member of one embodiment of the present application is shown.

[0053] Figure 5 One of structural schematic diagrams of the food material bearing member of one embodiment of the present application is shown.

[0054] Figure 6 One of structural schematic diagrams of the food material bearing member of one embodiment of the present application is shown.

[0055] Figure 7 One of structural schematic diagrams of the cooking apparatus of one embodiment of the present application is shown.

[0056] Figure 8 One of structural schematic diagrams of the cooking apparatus of one embodiment of the present application is shown.

[0057] Figure 9 One of structural schematic diagrams of the cooking apparatus of one embodiment of the present application is shown.

[0058] Figure 10 One of structural schematic diagrams of the cooking apparatus of one embodiment of the present application is shown.

[0059] Figure 11 One of structural schematic diagrams of the cooking apparatus of one embodiment of the present application is shown.

[0060] Figure 12 One of structural schematic diagrams of the cooking apparatus of one embodiment of the present application is shown.

[0061] Reference Signs:

[0062] 1 food material bearing member, 12 area, 14 handle, 16 heat insulation structure, 162 groove, 18 partition rib, 19 mounting column, 2 PTC heating assembly, 22 PTC heating member, 3 base assembly, 32 bottom shell, 322 accommodating groove, 324 opening, 34 bottom cover, 4 sealing member, 5 pressing plate, 6 wire assembly, 7 electric control board. DETAILED DESCRIPTION

[0063] In order to enable the above objects, features and advantages of the present application to be more clearly understood, the following will further describe the present application with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0064] Many particular details are set forth in the following description in order to provide a thorough understanding of the application. However, the application can be practiced according to the claims without some or all of these details. Indeed, some embodiments of the application can be more fully appreciated, as compared to others, by leaving some of these details out.

[0065] The cooking appliance and the cooking device according to some embodiments of the application are described below with reference to the accompanying drawings. Figures 1 to 12

[0066] As shown in Figures 1 to 12 , the embodiments of the first aspect of the application provide a cooking appliance, which includes a food material bearing member 1 and at least two PTC heating assemblies 2. The at least two PTC heating assemblies 2 are arranged corresponding to the outer wall surface of the food material bearing member 1 and are used to heat the food material bearing member 1. Each PTC heating assembly can be independently turned on and off. The at least two PTC heating assemblies 2 are arranged along a first direction of the food material bearing member 1.

[0067] The cooking appliance provided by the application includes a food material bearing member 1 and at least two PTC heating assemblies 2. The food material bearing member 1 is used to bear food materials to achieve heating of the food materials. The surface of the food material bearing member 1 that is used to contact the food materials is the food material bearing surface, and the surface of the food material bearing member 1 that is away from the food material bearing surface is the heating surface. The at least two PTC heating assemblies 2 are arranged corresponding to the outer wall surface (heating surface) of the food material bearing member 1. When the at least two PTC heating assemblies 2 are powered on, they can generate heat to heat the food material bearing member 1, so as to heat the food materials placed on the food material bearing member 1, such as cooking the food materials, heating cold food materials, or boiling water, etc.

[0068] Each PTC heating assembly 2 can be independently turned on and off, so that the cooking appliance can achieve independent heating and temperature control of the at least two regions 12, thereby forming different power heating modes, so as to facilitate different regions of the food material bearing member to heat different food materials at different temperatures and powers at the same time, so as to make the heating mode of the product more diversified and the temperature control of the product more flexible.

[0069] As shown in Figure 1 , the at least two PTC heating assemblies 2 are arranged along a first direction of the food material bearing member 1, which can reduce the heat interference between the two PTC heating assemblies 2, and at the same time, reserve space for arranging a heat insulation structure between the two regions 12.

[0070] ​At least two PTC heating assemblies have different temperature control points, for example, at least two PTC heating assemblies have different Curie temperatures. In this way, at least two regions 12 on the outer wall surface of the food material bearing part 1 have different power temperature control points, and different power temperature control points result in different heating powers, so that the same food material bearing part 1 can be heated at different powers at the same time, so that different regions can be heated at different temperatures (or different powers), so that the same food material bearing part 1 can be used to cook two different food materials at the same time. With this structure, the cooking appliance can independently control the temperature of at least two regions 12, thereby forming different power heating modes, so that different regions 12 of the food material bearing part 1 can heat different food materials at different temperatures and powers at the same time, thereby making the heating mode of the product more diversified and the temperature control of the product more flexible.

[0071] In any of the above embodiments, optionally, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 6 , at least one heat insulation structure 16 is arranged on the outer wall surface of the food material bearing part 1, and the PTC heating assembly 2 is arranged on one side of the heat insulation structure 16 along the first direction.

[0072] In any of the above embodiments, optionally, as shown in 、

[0073] and Figure 1 , the outer wall surface of the food material bearing part 1 is provided with a heat insulation structure 16. The outer wall surface of the food material bearing part 1 can be divided into a plurality of different regions 12 by the heat insulation structure 16. During installation, different PTC heating assemblies 2 can be installed on both sides of the heat insulation structure 16, that is, adjacent PTC heating assemblies 2 are separated by the heat insulation structure 16. On the one hand, the heat insulation structure 16 can ensure the spacing between the PTC heating assemblies 2, and on the other hand, the heat insulation structure 16 can reduce the heat transfer between the two adjacent regions 12, that is, reduce the heat interference between the two adjacent PTC heating assemblies 2. In this way, the temperature control of the two adjacent regions 12 can be avoided due to the mutual interference of heat. The heat insulation structure 16 can be a heat insulation part made of a material with poor heat conduction effect, or an air heat insulation structure 16 formed by a groove 162 or a hollow structure.

[0073] In any of the above embodiments, optionally, as shown in Figure 1 、 Figure 2 and Figure 3 , the heat insulation structure 16 divides the outer wall surface into at least two regions 12 along the first direction, and at least two PTC heating assemblies 2 are arranged one by one corresponding to the at least two regions 12, and the Curie temperature of each PTC heating assembly 2 is different.

[0074] In this embodiment, the number of the heat insulation structures 16 can be set as required, but is generally set as 2. The number of the areas 12 separated by the heat insulation structures 16 is consistent with the number of the PTC heating assemblies 2, that is, one PTC heating assembly 2 is arranged in one area 12, and the Curie temperatures of the plurality of PTC heating assemblies 2 are all different, so that the temperature control points of each area 12 are different, thereby enabling each area 12 to heat the food materials at different powers.

[0075] In any of the above embodiments, optionally, as shown in Figure 2 and Figure 3 , the heat insulation structure 16 includes a groove 162 or a hollow structure arranged on the outer wall surface of the food material bearing member 1.

[0076] In this embodiment, the heat insulation structure 16 is specifically an air heat insulation structure 16 formed by the groove 162 or the hollow structure. By arranging the groove 162 or the hollow structure between the adjacent two areas 12, the wall thickness of the food material bearing member 1 in the heat insulation area can be reduced, so that a structure for accommodating air can be formed between the adjacent two areas 12 to prevent heat transfer between the two areas 12.

[0077] In any of the above embodiments, optionally, the width of the heat insulation structure 16 is greater than or equal to 2 mm and less than or equal to 50 mm. Or a heat insulation area is arranged between any two adjacent areas 12. The width of the heat insulation area is greater than or equal to 2 mm and less than or equal to 50 mm.

[0078] In this embodiment, by arranging the heat insulation area or the heat insulation structure 16, the heat transfer between the adjacent two areas 12 can be reduced, so that the temperature control inaccuracy of the adjacent two areas 12 caused by the mutual interference of heat can be avoided. If the width of the heat insulation area or the heat insulation structure 16 is too large, the heating area of the food material bearing member 1 will be reduced, and if the width of the heat insulation area or the heat insulation structure 16 is too small, the heat insulation effect will be poor. Therefore, the width of the heat insulation area or the heat insulation structure 16 can be greater than or equal to 2 mm and less than or equal to 50 mm, so that the heating area of the food material bearing member 1 is moderate and the heat insulation effect is also good.

[0079] In any of the above embodiments, optionally, as shown in Figure 2 and Figure 3 , the wall thickness of the food material bearing member 1 in the heat insulation area is less than the wall thickness of the food material bearing member 1 in the remaining areas, that is, the wall thickness of the heat insulation area is reduced in the present application, and it can also be understood that the groove 162 or the hollow structure is formed between the adjacent two areas 12, so that air heat insulation is formed.

[0080] In any of the above embodiments, optionally, as shown in Figure 1As shown, the plurality of PTC heating assemblies 2 are connected in parallel with each other, and / or the PTC heating assembly 2 comprises one or more PTC heating pieces 22, and the plurality of PTC heating pieces 22 in each PTC heating assembly 2 are connected in parallel or in series with each other.

[0081] In this embodiment, at least two PTC heating assemblies 2 form a parallel circuit, so that at least two PTC heating assemblies 2 can work independently of each other without interfering with each other, so that at least two PTC heating assemblies 2 can be turned on and off independently, so that the working state of at least two PTC heating assemblies 2 can be controlled according to actual needs, so that the heating control of each region 12 of the food material carrying body 1 can be realized, and the food material carrying body can be controlled by partition.

[0082] Among them, for each PTC heating assembly 2, it can only include one PTC heating piece 22, or it can include a plurality of PTC heating pieces 22. For the scheme that includes a plurality of PTC heating pieces 22, the plurality of PTC heating pieces 22 can be connected in parallel or in series with each other, but best of all, the plurality of PTC heating pieces 22 are connected in parallel with each other, so that the temperature control of each region 12 is more flexible.

[0083] Exemplarily, all PTC heating pieces 22 in the plurality of PTC heating assemblies 2 are connected in parallel with each other through the wire assembly 6.

[0084] Among them, the Curie temperature of the plurality of PTC heating pieces 22 corresponding to the same region 12 can be different or the same.

[0085] In any of the above embodiments, optionally, the PTC heating assembly 2 comprises one or more PTC heating pieces 22, the PTC heating piece 22 comprises a PTC heating element and an electrode sheet, the electrode sheet is connected with the PTC heating element to supply power to the PTC heating element, and the outer surface of the PTC heating piece 22 is also wrapped with an insulating protective film.

[0086] In this embodiment, the PTC heating element can be powered to heat, thereby realizing the heating of the food material carrying body 1. The electrode sheet serves as a wiring structure of the PTC heating element, which is used to connect with the power supply to enable the PTC heating element to be powered. At the same time, the PTC heating element is also provided with an insulating protective film, which can avoid the leakage of the PTC heating element, and also can improve the waterproof and dustproof performance of the PTC heating element.

[0087] In any of the above embodiments, optionally, the food material carrying body 1 comprises at least one of a baking tray, a pot body and a cup body.

[0088] In this embodiment, the food material carrier 1 is used to contact with food materials to realize the cooking of the food materials. The food material carrier 1 can be in the form of a pot body, or a baking tray, or a cup body, etc.

[0089] In any of the above embodiments, optionally, the PTC heating assembly 2 is detachably mounted on the food material carrier 1, or the PTC heating assembly 2 is separately arranged from the food material carrier 1.

[0090] In this embodiment, the mounting mode of the PTC heating assembly 2 is not limited, which can be directly fixed and mounted on the food material carrier 1 by means of screws, buckles or welding, etc., or can be mounted on other components and completely separated from the food material carrier 1, so as to form a separate arrangement with the food material carrier 1, thereby facilitating the maintenance and replacement of the PTC heating assembly 2.

[0091] In any of the above embodiments, optionally, the PTC heating assembly 2 comprises a PTC ceramic heating assembly.

[0092] In any of the above embodiments, optionally, as shown in Figure 4 and Figure 5 , the food material carrying surface of the food material carrier 1 is provided with a partition rib 18, which is used to divide the food material carrying surface into multiple spaces to cook different food materials. The partition rib 18 is arranged corresponding to the interval between at least two PTC heating assemblies 2. By arranging the partition rib 18, the user can more obviously distinguish the boundary between different sub-walls during cooking. At the same time, by arranging the partition rib, the food materials on different sub-walls can also be prevented from moving mutually.

[0093] In any of the above embodiments, optionally, as shown in Figure 1 , the first direction can be the length direction of the food material carrier 1, at this time, the food material carrier 1 can be divided into zones for temperature control along the length direction. The first direction can also be the radial direction of the food material carrier 1 (not shown in the figure), at this time, the food material carrier 1 can realize annular zoning temperature control, i.e. zoning temperature control from the middle to the edge of the food material carrier 1.

[0094] In any of the above embodiments, optionally, as shown in Figure 7 , Figure 8 , Figure 9 and Figure 10 , the cooking appliance further comprises a pressing plate 5 mounted on the food material carrier 1, and the at least two PTC heating assemblies 2 are mounted between the pressing plate 5 and the food material carrier 1.

[0095] In this embodiment, the pressing plate 5 can be installed at the bottom of the food material carrier 1, and then at least two PTC heating assemblies 2 can be clamped and installed between the pressing plate 5 and the food material carrier 1. In this way, the clamped installation of the at least two PTC heating assemblies 2 can be achieved, and no installation structure needs to be arranged on the at least two PTC heating assemblies 2, thereby facilitating the structural design of the product.

[0096] As shown in Figure 2 and Figure 6 , the mounting column 19 can be arranged on the outer bottom wall surface of the food material carrier 1, and the pressing plate 5 can be installed on the mounting column 19 of the food material carrier 1 through screws.

[0097] In this way, the at least two PTC heating assemblies 2 can be in contact with the food material carrier 1, so that the at least two PTC heating assemblies 2 can achieve contact heating. In other schemes, a heat conducting member can be arranged between the PTC heating assembly 2 and the food material carrier 1, so that the heat generated by the PTC heating assembly 2 is conducted to the corresponding area 12 of the food material carrier 1 through the heat conducting member.

[0098] As shown in Figure 7 , Figure 8 , Figure 9 and Figure 10 , the second aspect of the present application provides a cooking device comprising the cooking utensil provided in the first aspect.

[0099] According to the cooking device provided by the present application, since it comprises the cooking utensil provided in the first aspect. Therefore, the cooking device has all the beneficial effects of the cooking utensil provided in the first aspect, which will not be repeated here.

[0100] In any of the above embodiments, optionally, as shown in Figure 7 , Figure 8 , Figure 9 and Figure 10 , the cooking device further comprises a base assembly 3, and the cooking utensil is installed on the base assembly 3. The base assembly 3 comprises an electric control panel 7, which is connected in parallel with the at least two PTC heating assemblies 2 (as shown in Figure 12 ) to supply power to the at least two PTC heating assemblies 2, and the electric control panel 7 can control each PTC heating assembly 2 to work independently or control at least part of the at least two PTC heating assemblies 2 to work simultaneously.

[0101] In this embodiment, the base assembly 3 is used to support and install the cooking utensil. The electric control panel 7 is used to control the operation of the cooking device. In order to facilitate the partition heating and temperature control, the electric control panel 7 can control each PTC heating assembly 2 to be turned on or off independently. Of course, the electric control panel 7 can also control part or all of the at least two PTC heating assemblies 2 to work simultaneously, so that the heating mode of the cooking device is more flexible and diverse.

[0102] The number of PTC heating assemblies 2 can be set to two, so as to divide the food material carrier 1 into two areas 12 for temperature control.

[0103] In any of the above embodiments, optionally, as shown in Figure 10 and Figure 11 The base assembly 3 comprises a bottom shell 32, one end of the bottom shell 32 is recessed to the inside of the bottom shell 32 to form a containing groove 322 for containing the cooking utensil, and the other end of the bottom shell 32 is provided with an opening 324; a bottom cover 34 is installed at the opening 324 of the bottom shell 32 to close the bottom shell 32; the electric control panel 7 is installed between the bottom shell 32 and the bottom cover 34; the sealing member 4 is arranged between the base assembly 3 and the cooking utensil to seal the gap between the base assembly 3 and the cooking utensil.

[0104] In this embodiment, through the containing groove 322, the closed installation of the cooking utensil can be realized, so as to improve the waterproof performance of the PTC heating assembly 2. At the same time, in order to avoid water outside the bottom shell 32 from entering the containing groove 322, the sealing member 4 can be arranged between the base assembly 3 and the cooking utensil to seal the gap between the base assembly 3 and the cooking utensil, so as to further improve the waterproof performance of the cooking utensil. In addition, the other end of the bottom shell 32 is provided with an opening 324, and the bottom cover 34 is installed at the opening 324 of the bottom shell 32 to close the bottom shell 32. The space of the bottom shell 32 can be opened through the bottom cover 34, so as to facilitate the installation of the electric control panel 7 and the like.

[0105] In any of the above embodiments, optionally, the cooking device comprises at least one of a multifunctional pot, a frying and baking machine, an electric pressure cooker and an electric rice cooker.

[0106] In any of the above embodiments, optionally, as shown in Figure 5 A handle 14 is further arranged on the food material carrier 1 to facilitate the movement of the food material carrier 1.

[0107] A specific frying and baking machine is introduced below.

[0108] PTC (Positive Temperature Coefficient Ceramic) thermosensitive ceramic, also known as positive temperature coefficient ceramic, has the characteristic that the resistance increases with the increase of temperature, that is, the higher the temperature, the smaller the power. When the temperature reaches the Curie temperature (the Curie temperature refers to the temperature at which the material changes from a low-resistance state to a high-resistance state. When the temperature is lower than the Curie temperature, the PTC ceramic behaves as a conductor with relatively low resistance; once the temperature exceeds the Curie temperature, the resistance will increase rapidly, sometimes even by several orders of magnitude), the heating power of the PTC ceramic is balanced with the heat dissipation power. At this time, if a load is applied (the heat dissipation is increased, the temperature is lowered), the power of the PTC ceramic will also increase, causing the temperature to rise again. Therefore, by utilizing the self-adaptability and self-temperature control characteristics of PTC ceramic as the heating source of the frying and baking machine, the temperature fluctuation of the frying and baking machine can be small, and since multiple PTC components are individually self-temperature controlled, the temperature difference of the entire baking tray can be reduced, and the uniformity is better.

[0109] By changing the material composition of PTC ceramic, the Curie temperature can be changed, that is, the self-temperature control temperature is changed. The present patent provides a temperature zoning baking tray, which distributes PTC ceramic sheets with different temperature points in the high-temperature zone and the low-temperature zone, and sets a temperature isolation zone between the high-temperature zone and the low-temperature zone to realize temperature zoning of the baking tray. Thus, simultaneous cooking of different food materials or keeping warm of cooked food can be realized.

[0110] Among them, the frying and baking machine includes a base, a baking tray, and two or more groups of PTC components with different temperature values attached to the bottom of the baking tray. The PTC components are located between the baking tray and the pressing plate. The baking tray is divided into two or more temperature zones, and shallow grooves or hollow structures are provided between the temperature zones to reduce the wall thickness of the temperature isolation zone, thereby reducing the heat transfer between the temperature zones; the width of the temperature isolation zone is limited to 2-50 mm. The PTC component includes one or more PTC ceramic sheets, electrode sheets, and an insulating film on the outermost side. Among them, multiple PTC components are connected in parallel to realize independent temperature control of each PTC component. A sealing ring or sealing glue is provided between the base and the baking tray. A bottom cover is also provided below the base to support and close the base.

[0111] Among them, the PTC component and the baking tray can be prepared into a baking tray assembly for use in frying and baking machines, beef steak machines, etc. In addition, the PTC component can also be used for heating electric chafing dishes, so that the two pots of the chafing dish can be kept boiling at the same temperature through different temperature control.

[0112] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. It is emphasized that each of these terms refers to a specific feature, structure, material or characteristic described in connection with a particular embodiment or example. The descriptive terms are not necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0113] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application is defined with respect to the appended claims.

Claims

1. A cooking appliance characterized by, The cooking device comprises: a food material bearing member; at least two PTC heating assemblies corresponding to the outer wall surface of the food material bearing member, used for heating the food material bearing member; wherein the at least two PTC heating assemblies are arranged at intervals along a first direction of the food material bearing member, and each of the PTC heating assemblies can be independently turned on and turned off.

2. The cooking appliance of claim 1, wherein, At least one heat insulation structure is arranged on the outer wall surface of the food material bearing member, and the PTC heating assembly is arranged on one side of the heat insulation structure along the first direction.

3. The cooking appliance of claim 2, wherein, The heat insulation structure divides the outer wall surface into at least two regions along the first direction, and the at least two PTC heating assemblies and the at least two regions are arranged one by one.

4. The cooking appliance of claim 2, wherein, The heat insulation structure comprises a groove or a hollow structure arranged on the outer wall surface of the food material bearing member.

5. The cooking appliance of claim 2, wherein, The width of the heat insulation structure is greater than or equal to 2 mm and less than or equal to 50 mm.

6. The cooking appliance according to any one of claims 1 to 5, characterized in that, The Curie temperatures of the at least two PTC heating assemblies are not equal.

7. The cooking appliance according to any one of claims 1 to 5, characterized in that, The plurality of PTC heating assemblies are connected in parallel with each other, and / or the PTC heating assembly comprises one or more PTC heating elements, and the plurality of PTC heating elements in each of the PTC heating assemblies are connected in parallel or in series with each other.

8. The cooking appliance according to any one of claims 1 to 5, characterized in that, The PTC heating assembly comprises one or more PTC heating elements, the PTC heating element comprises a PTC heating element and an electrode sheet, the electrode sheet is connected with the one or more PTC heating elements to supply power to the one or more PTC heating elements, and an insulating protective film is further wrapped on the outer surface of the PTC heating element.

9. The cooking appliance according to any one of claims 1 to 5, characterized in that, The food material bearing member comprises at least one of a baking tray, a pot body, and a cup body.

10. The cooking appliance according to any one of claims 1 to 5, characterized in that, The PTC heating assembly comprises a PTC ceramic heating assembly; and / or The first direction is a length direction of the food material bearing member.

11. The cooking appliance according to any one of claims 1 to 5, characterized in that, Further comprising: a pressing plate mounted on the food material bearing member, and the at least two PTC heating assemblies are mounted between the pressing plate and the food material bearing member.

12. The cooking appliance according to any one of claims 1 to 5, characterized in that, A separation rib is arranged on the inner wall surface of the food material bearing member, and the separation rib is used to divide the inner wall surface of the food material bearing member into at least two sub-wall surfaces along the first direction, and the at least two PTC heating assemblies and the at least two sub-wall surfaces are arranged one by one.

13. A cooking apparatus, characterized by, The cooking device comprises the cooking appliance according to any one of claims 1 to 12.

14. The cooking apparatus according to claim 13, wherein, The cooking device further comprises: a base assembly, the cooking appliance is mounted on the base assembly, the base assembly comprises an electric control board, the electric control board is connected with the at least two PTC heating assemblies to supply power to the at least two PTC heating assemblies, and the electric control board can control each of the PTC heating assemblies to work independently or control at least part of the at least two PTC heating assemblies to work simultaneously.

15. The cooking apparatus according to claim 14, wherein, The base assembly comprises: a bottom shell, one end of the bottom shell is recessed towards the inside of the bottom shell to form a receiving groove to accommodate the cooking appliance, and the other end of the bottom shell is provided with an opening; a bottom cover mounted on the opening of the bottom shell to close the bottom shell; the electric control board is mounted between the bottom shell and the bottom cover; a sealing member arranged between the base assembly and the cooking appliance to seal the gap between the base assembly and the cooking appliance.

16. The cooking apparatus according to any one of claims 13 to 15, characterized in that, The cooking apparatus includes at least one of a multi-functional pot, a grill, an electric pressure cooker, and an electric rice cooker.

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