Heating assembly and cooking utensil

Abstract

The utility model provides a heating assembly and a cooking utensil. The heating assembly comprises a base material; the at least two heating parts are arranged on the base material, any heating part comprises a graphene heating layer and an electric connection part, the electric connection part is electrically connected with the graphene heating layer, so that the graphene heating layer in the at least two heating parts can be independently electrified through the corresponding electric connection part, and the at least two heating parts are not overlapped on the base material. According to the heating assembly provided by the utility model, the at least two heating parts can be independently electrified through the corresponding electric connection parts respectively, so that each heating part can be independently controlled, and therefore, when the heating assembly supplies heat to the pot body, a part of the heating parts are started, so that the inside of the pot body can be kept in a boiling state; and the situation that liquid overflows due to the fact that the temperature in the pot body is too high is avoided, and the situation that the cooking taste of food materials is affected due to sudden drop of the temperature is also avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, specifically, relates to a heating assembly and cooking utensil. BACKGROUND

[0002] At present, when cooking by a cooking utensil, if the cooked food material is more delicious, it is necessary to keep continuous boiling in the boiling stage. However, in the related art, in the case of using a hot plate for heating, if high power is still used after water boils, the phenomenon of pot overflow will occur; in the case of using on-off mode, the heating power is repeatedly switched between the maximum power and the power of 0W, and after several times of reciprocating switching, water cannot keep boiling, which not only affects the taste of food material, but also increases the cooking time. SUMMARY

[0003] The utility model aims at least solves one of the technical problems existing in the prior art or related art.

[0004] Therefore, the first aspect of the utility model provides a heating assembly.

[0005] The second aspect of the utility model further provides a cooking utensil.

[0006] Therefore, the first aspect of the utility model provides a heating assembly.

[0007] The heating assembly provided by the utility model, including base material and at least two heating parts, at least two heating parts are arranged on the base material, and any heating part includes graphene heating layer and electric connection part, that is, the heating part realizes heating through the graphene heating layer, the graphene heating layer has high heating efficiency and is beneficial to shorten the heating time. At least two heating parts do not overlap on the base material, and any heating part includes electric connection, so that at least two heating parts can be separately electrified through corresponding electric connection parts, and then the separate control of each heating part is realized. In this way, when heating through the heating assembly, if all the heating parts are turned on, the heating speed of the heating assembly can be accelerated, and the heating time of the heating assembly is shortened. In the case that one heating part or several heating parts of all the heating parts are turned on and the other several heating parts are turned off, the temperature of the opened one heating part or several heating parts can be maintained within a certain range. For example, when the heating assembly supplies heat to the pot body, turning on part of the heating parts can maintain the pot body in a boiling state, and the situation that the temperature in the pot body is too high to cause liquid overflow does not occur, and the cooking taste of food materials is not affected due to sudden temperature drop. In addition, the adjustment of different heating powers can be realized by separately heating one heating part or several heating parts of at least two heating parts, so as to meet different cooking requirements.

[0008] According to the heating assembly provided by the utility model, the following additional technical features can be further provided.

[0009] In some technical solutions, the heating part includes: a first heating part arranged on the base material; and a plurality of second heating parts arranged on the base material, the plurality of second heating parts being located around the first heating part, and the first heating part and the second heating parts being separately electrified through corresponding electric connection parts.

[0010] In the technical solution, the heating part includes the first heating part and the plurality of second heating parts, the plurality of second heating parts are located around the first heating part, and the first heating part and the second heating parts are separately electrified through corresponding electric connection parts. This design can separately control the first heating part to work, realize the heating of the corresponding area of the first heating part, and then make the food materials in the pot body transfer heat from the middle part to the outer side. The second heating parts on both sides of the first heating part can also be separately controlled to work, the corresponding area of the second heating part is heated, and then the food materials in the pot body transfer heat from the outer side to the middle part, so that the food materials such as rice in the pot body realize heat exchange and improve the cooking taste.

[0011] In some technical solutions, the plurality of second heating parts are respectively located on both sides of the first heating part along a first direction.

[0012] In the technical solution, the plurality of second heating parts are respectively located on both sides of the first heating part along the first direction, and through separate control of the first heating part and the second heating part, the food material can be gradually heated from the middle to the outside or gradually heated from the outside to the middle, so that the food material in the pot exchanges heat, improves the cooking taste, and meanwhile, the wiring and coating of the second heating part and the first heating part are facilitated.

[0013] In some technical solutions, optionally, the first heating part includes at least two graphene heating layers, and the at least two graphene heating layers in the first heating part are respectively curved in directions away from each other along the first direction.

[0014] In the technical solution, the first heating part includes at least two graphene heating layers, and the at least two graphene heating layers of the first heating part are curved in directions away from each other, so that the first heating part can have a ring shape or a structure similar to a ring shape, increasing the heating area of the first heating part and improving the heating effect.

[0015] In some technical solutions, optionally, along the first direction, the second heating parts on both sides of the first heating part are curved in directions away from each other; and any second heating part includes at least one graphene heating layer.

[0016] In the technical solution, along the first direction, the second heating parts on both sides of the first heating part are curved in directions away from each other, so that the second heating parts have an arc shape, and the second heating parts on both sides of the first heating part can enclose a region similar to a ring shape, increasing the heating area of the second heating parts and improving the heating efficiency.

[0017] In some technical solutions, optionally, the sum of the number of graphene heating layers in the plurality of second heating parts on both sides of the first heating part is greater than the number of graphene heating layers in the first heating part.

[0018] In the technical solution, the sum of the number of graphene heating layers in the plurality of second heating parts on both sides of the first heating part is greater than the number of graphene heating layers in the first heating part, so that the heating efficiency when the first heating part works alone is different from the heating efficiency when the plurality of second heating parts on both sides of the first heating part work, so that the heating power in the pot is different when the first heating part works and when the plurality of second heating parts on both sides of the first heating part work, and different power requirements for cooking can be achieved.

[0019] In some technical solutions, optionally, along the first direction, the second heating parts on both sides of the first heating part are symmetrically arranged relative to the first heating part.

[0020] In the technical solution, the second heating part on both sides of the first heating part is symmetrically arranged relative to the first heating part, which can make the heating of the corresponding parts of the second heating part in the pot more uniform when the second heating parts on both sides of the first heating part work, and such design also facilitates the coating of the graphene heating layer and reduces the manufacturing cost.

[0021] In some technical solutions, optionally, the electric connection part in the first heating part is located at both ends of the graphene heating layer along the second direction, and the electric connection part in the second heating part is located at both ends of the graphene heating layer along the second direction; the first direction is different from the second direction.

[0022] In the technical solution, the electric connection part is arranged at both ends of the graphene heating layer along the second direction, which can make the arrangement of the electric connection part more orderly, thereby facilitating wiring of each electric connection part.

[0023] In some technical solutions, optionally, any heating part is arranged in a ring shape, and at least one heating part surrounds another heating part.

[0024] In the technical solution, any heating part is designed in a ring shape, and at least one heating part surrounds another heating part outside, thereby respectively controlling the at least two heating parts to work, so that the shape of the at least two heating parts is more suitable for the shape of the bottom wall of the pot body, thereby facilitating improvement of the heating efficiency.

[0025] In some technical solutions, optionally, any heating part includes a wear-resistant insulating layer, which is arranged on the surface of the graphene heating layer, and the electric connection part at least partially does not overlap the wear-resistant insulating layer.

[0026] In the technical solution, the wear-resistant layer is arranged on the heating part, which can increase the wear resistance of the heating part and avoid damage of the heating part due to loss of the coating layer caused by repeated friction during use. At the same time, at least a part of the electric connection part does not overlap the wear-resistant layer to realize the electrical connection of the heating part.

[0027] In some technical solutions, optionally, the electric connection part includes a silver electrode and / or the substrate includes microcrystalline glass.

[0028] In the technical solution, the silver electrode has good conductivity, which ensures the reliability of the graphene heating layer in power supply. The microcrystalline glass has high strength and good tensile, compressive and bending resistance, thereby improving the service life of the heating assembly.

[0029] According to the second aspect of the utility model, a cooking utensil is also provided, which comprises the heating assembly according to any of the above technical solutions.

[0030] The cooking utensil provided in the second aspect of the utility model has all the beneficial effects of the heating assembly.

[0031] In some technical solutions, the cooking utensil further comprises a pot body, and the heating assembly is configured to heat the pot body.

[0032] In the technical solution, the cooking utensil further comprises a pot body, and the heating assembly is configured to heat the pot body to cook food in the pot body. The heating assembly comprises at least two heating parts, any one of the heating parts comprises a graphene heating layer, and the graphene heating layers in the at least two heating parts are individually powered through corresponding electrical connection parts, so that the at least two heating parts can be individually controlled, and the liquid in the pot body can be maintained in a boiling state without causing the liquid in the pot body to overflow.

[0033] In some technical solutions, the heating assembly is arranged opposite to the bottom wall of the pot body.

[0034] In the technical solution, the heating assembly is arranged opposite to the bottom wall of the pot body, so that the heating assembly heats the bottom wall of the pot body, and heat is transferred from the bottom to the upper side of the pot body to cook food in the pot body.

[0035] In some technical solutions, the pot body comprises a cooking cavity, and at least a portion of the bottom wall of the pot body is an arc-shaped structure arched into the cooking cavity; the graphene heating layer is arranged at a maximum distance between the heating assembly and the arc-shaped structure, or the radius of the arc-shaped structure is less than or equal to 2 mm.

[0036] In the technical solution, the pot body comprises a cooking cavity, and at least a portion of the bottom wall of the pot body is arched into the cooking cavity to form an arc-shaped structure, which increases the area of the bottom wall and improves the heating efficiency. Meanwhile, when the radius of the bottom wall of the pot body is small, the heat exchange efficiency is better, and the heat generated by the graphene heating layer can be quickly transferred to the cooking cavity of the pot body. If the radius of the bottom wall of the pot body is too large, the heat generated by the graphene heating layer cannot be timely transferred to the cooking cavity of the pot body, and the temperature of the graphene heating layer rises sharply, which exceeds the use temperature of the graphene heating layer, thereby causing the graphene heating layer to burn out. Therefore, the graphene heating layer is arranged to avoid the maximum distance of the arc-shaped structure, or the radius of the arc-shaped structure is designed to be less than or equal to 2 mm, so as to ensure the heating efficiency of the graphene heating layer.

[0037] It can be understood that there is a gap between the heating assembly and the arc-shaped structure, and the maximum gap between the two is the maximum distance between the two. The maximum distance between the graphene heating layer and the arc-shaped structure is set, that is, the area corresponding to the maximum distance between the heating assembly and the oppositely arranged arc-shaped structure does not include the graphene heating layer, which can avoid the invalid heat conduction caused by the air layer at the maximum distance, thereby avoiding the case of heat accumulation causing the substrate to break.

[0038] In some embodiments, the sum of the areas of the at least two heating portions is a first area, the area of the bottom wall of the pot body is a second area, and the first area is less than or equal to the second area.

[0039] In this embodiment, the first area is less than or equal to the second area, so that the area of the graphene heating layer is close to or smaller than the area of the bottom wall of the pot body, which can increase the heat transfer area and improve the heat exchange efficiency, and also avoid waste of heat.

[0040] In some embodiments, the cooking utensil further comprises a control device electrically connected to the at least two heating portions for controlling the operation of the at least two heating portions.

[0041] In this embodiment, the cooking utensil further comprises a control device electrically connected to the at least two heating portions, and the control device can control the operation of the at least two heating portions, so that the at least two heating portions can work independently. Thus, when rapid heating is needed, all the heating portions can be turned on to achieve rapid heating, and when the boiling state needs to be maintained, one or more heating portions can be turned on to maintain the boiling state and prevent the liquid in the pot body from overflowing.

[0042] The additional aspects and advantages of the present application will become apparent from the following description with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0043] The above and / or additional aspects and advantages of the present application will become apparent from the following description with reference to the accompanying drawings, wherein:

[0044] Figure 1 Fig. 1 shows a structure schematic view of a heating assembly of one embodiment of the present application;

[0045] Figure 2 Fig. 2 shows a structure schematic view of a heating assembly of one embodiment of the present application;

[0046] Figure 3 Fig. 3 shows a structure schematic view of a pot body of one embodiment of the present application;

[0047] Figure 4A structure schematic view of the cooking utensil of one embodiment of the utility model is shown.

[0048] Figure 5 A comparison chart of the heating power of the heating assembly of one embodiment of the utility model and the heating power of the heating assembly in the related art is shown.

[0049] Figure 6 A structure schematic view three of the heating assembly of one embodiment of the utility model is shown.

[0050] Figure 7 A structure schematic view four of the heating assembly of one embodiment of the utility model is shown.

[0051] Among them, Figures 1 to 4 、 Figure 6 and Figure 7 The correspondence between the reference signs and the component names in the drawings is as follows:

[0052] 100 heating assembly, 1 base material, 2 heating part, 20 graphene heating layer, 21 electric connection part, 22 first heating part, 23 second heating part, 24 wear-resistant insulation layer, 25 insulation coating, 3 pot body, 30 cooking cavity, 31 arc structure, 200 cooking utensil. DETAILED DESCRIPTION

[0053] In order to enable the above-mentioned purposes, features and advantages of the utility model to be more clearly understood, the utility model will be further described in detail below in combination with the 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.

[0054] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, however, the utility model can also be implemented in other ways different from those described herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.

[0055] The following will be described with reference to Figures 1 to 7 A heating assembly 100 and a cooking utensil 200 according to some embodiments of the utility model are proposed.

[0056] As shown in Figure 1 and Figure 2 According to one embodiment of the utility model, the utility model proposes a heating assembly 100, which comprises a base material 1 and at least two heating parts 2, wherein the at least two heating parts 2 do not overlap on the base material 1.

[0057] At least two heating parts 2 are arranged on the base material 1, and any heating part 2 comprises a graphene heating layer 20 and an electrical connection part 21, and the electrical connection part 21 is electrically connected with the graphene heating layer 20, so that the graphene heating layer 20 in the at least two heating parts 2 can be separately powered through the corresponding electrical connection part 21.

[0058] The heating assembly 100 provided by the utility model, comprising a base material 1 and at least two heating parts 2, at least two heating parts 2 are arranged on the base material 1, and any heating part 2 comprises a graphene heating layer 20 and an electrical connection part 21, that is, the heating part 2 realizes heating through the graphene heating layer 20, the heating efficiency of the graphene heating layer 20 is high, and the heating time can be shortened. At least two heating parts 2 do not overlap on the base material 1, and any heating part 2 comprises an electrical connection, so that at least two heating parts 2 can be separately powered through the corresponding electrical connection part 21, and then the separate control of each heating part 2 is realized. In this way, when heating through the heating assembly 100, if all the heating parts 2 are turned on, the heating speed of the heating assembly 100 can be accelerated, and the heating time of the heating assembly 100 can be shortened. In the case that one heating part 2 or several heating parts 2 of all the heating parts 2 are turned on and the other several heating parts 2 are turned off, the temperature of the opened one heating part 2 or several heating parts 2 can be maintained within a certain range. For example, when the heating assembly 100 supplies heat to the pot body 3, opening part of the heating parts 2 can maintain the pot body 3 in a boiling state, and the temperature in the pot body 3 will not be too high to cause liquid overflow, and the cooking taste of food will not be affected due to sudden temperature drop. In addition, the adjustment of different heating powers can be realized by separately heating one heating part 2 or several heating parts 2 of at least two heating parts 2 to meet different cooking requirements.

[0059] It can be understood that any heating part 2 comprises a graphene heating layer 20 and an electrical connection part 21, that is, any heating part 2 is a graphene heating film, the heating assembly 100 provided by the utility model has a plurality of graphene heating films, the graphene heating layer 20 in any graphene heating film is separately powered through the corresponding electrical connection part 21, and then the separate control of each graphene heating film is realized. In this way, one or several of all the graphene heating films can be controlled to be separately turned on to maintain the temperature of the heated part within a certain range. In addition, the adjustment of different heating powers can be realized by controlling one or several graphene heating films to be separately turned on.

[0060] It should be noted that the at least two heating parts 2 are separately powered through the corresponding electrical connection part 21, that is, each heating part 2 can be separately controlled.

[0061] Optionally, the electrical connection part 21 in any heating part 2 is correspondingly provided with a separate control circuit.

[0062] As Figure 1 and Figure 2 shown, in some embodiments, the heating part 2 optionally comprises: a first heating part 22 arranged on the base material 1; a plurality of second heating parts 23 arranged on the base material 1, the plurality of second heating parts 23 are located on both sides of the first heating part 22 along the first direction, and the first heating part 22 and the second heating part 23 are respectively powered by the corresponding electrical connection part 21.

[0063] In this embodiment, the heating part 2 comprises the first heating part 22 and the plurality of second heating parts 23, the plurality of second heating parts 23 are arranged on both sides of the first heating part 22 along the first direction, and the first heating part 22 and the second heating part 23 are respectively powered by the corresponding electrical connection part 21, which can control the first heating part 22 to work alone, realize the heating of the corresponding area of the first heating part 22, and then make the food in the pot body 3 heat from the middle to the outside. The second heating part 23 on both sides of the first heating part 22 can also be controlled to work, which realizes the heating of the corresponding area of the second heating part 23, and then makes the food in the pot body 3 heat from the outside to the middle, so that the food such as rice in the pot body 3 realizes heat exchange, and the cooking taste is improved.

[0064] In some embodiments, the plurality of second heating parts 23 are respectively located on both sides of the first heating part 22 along the first direction.

[0065] In this embodiment, the plurality of second heating parts 23 are respectively located on both sides of the first heating part 22 along the first direction, and the first heating part 22 and the second heating part 23 are controlled separately, which can realize the gradual heat transfer of the food from the middle to the outside or from the outside to the middle, and then make the food in the pot body 3 exchange heat, improve the cooking taste, and at the same time, the wiring and coating of the second heating part 23 and the first heating part 22 are facilitated.

[0066] In addition, the plurality of second heating parts 23 can work individually through the corresponding electrical connection part 21, that is, at least one of the plurality of second heating parts 23 can be controlled to work alone. It can be understood that the first heating part 22 and the plurality of second heating parts 23 are arranged along the first direction, and then the first heating part 22 or any one of the second heating parts 23 can be controlled to work along the first direction, so that the food in the pot body 3 transfers heat from left to right or from right to left along the first direction, so that the food such as rice in the pot body 3 realizes heat exchange, and the cooking taste is improved.

[0067] It can be understood that the plurality of second heating parts 23 can also work together.

[0068] In a specific application, when the heating assembly 100 supplies heat to the pot 3, the first heating part 22 corresponds to the middle part of the pot 3, and then the first heating part 22 is turned on to enable the food in the pot 3 to transfer heat from the middle part to the outside, and correspondingly, when the second heating part 23 on both sides of the first heating part 22 is turned on, the food in the pot 3 can transfer heat from the outside to the middle part.

[0069] As shown in Figure 1 and Figure 2 , in some embodiments, optionally, the first heating part 22 includes at least two graphene heating layers 20, and the at least two graphene heating layers 20 in the first heating part 22 are bent in directions away from each other along the first direction.

[0070] In this embodiment, the first heating part 22 includes at least two graphene heating layers 20, and the at least two graphene heating layers 20 in the first heating part 22 are bent in directions away from each other, so that the first heating part 22 can have a ring shape or a structure similar to a ring shape, thereby increasing the heating area of the first heating part 22 and improving the heating effect.

[0071] Optionally, as shown in Figure 1 and Figure 2 , the first ends of all the graphene heating layers 20 in the first heating part 22 are connected to the same electrical connection part 21, and the second ends are also connected to the same electrical connection part 21, so as to reduce the number of electrical connection parts 21 and increase the coating area of the graphene heating layers 20.

[0072] Optionally, there is a gap between the adjacent two graphene heating layers 20 in the first heating part 22.

[0073] As shown in Figure 1 and Figure 2 , in some embodiments, optionally, along the first direction, the second heating part 23 on both sides of the first heating part 22 is bent in directions away from each other; wherein any second heating part 23 includes at least one graphene heating layer 20.

[0074] In this embodiment, along the first direction, the second heating part 23 on both sides of the first heating part 22 is bent in directions away from each other, so that the second heating part 23 has an arc shape, and then the second heating part 23 on both sides of the first heating part 22 can enclose a region similar to a ring shape, thereby increasing the heating area of the second heating part 23 and improving the heating efficiency.

[0075] Optionally, in the case where any second heating part 23 includes at least two graphene heating layers 20, the first ends of all the graphene heating layers 20 in any second heating part 23 are connected to the same electrical connection part 21, and the second ends are also connected to the same electrical connection part 21, so as to reduce the number of electrical connection parts 21 and increase the coating area of the graphene heating layers 20.

[0076] Optionally, there is a gap between two adjacent graphene heating layers 20 in the second heating portion 23. There is also a gap between the first heating portion 22 and the second heating portion 23.

[0077] In some embodiments, optionally, as Figure 1 As shown, the sum of the number of graphene heating layers 20 in the plurality of second heating parts 23 located on both sides of the first heating part 22 is the same as the number of graphene heating layers 20 in the first heating part 22; or as Figure 2 As shown, the sum of the numbers of the graphene heating layers 20 in the plurality of second heating parts 23 located on both sides of the first heating part 22 is greater than the number of the graphene heating layers 20 in the first heating part 22 .

[0078] In this embodiment, Figure 1 As shown, the sum of the number of graphene heating layers 20 in the multiple second heating parts 23 located on both sides of the first heating part 22 is the same as the number of graphene heating layers 20 in the first heating part 22. In this way, the heating efficiency when controlling the first heating part 22 to work alone is the same as the heating efficiency when controlling the multiple second heating parts 23 on both sides of the first heating part 22 to work. Furthermore, when controlling the first heating part 22 to work and controlling the multiple second heating parts 23 on both sides of the first heating part 22 to work, the heating power in the pot body 3 is the same, which can avoid a sudden increase or decrease in temperature in the pot body 3.

[0079] like Figure 2 As shown, the sum of the number of graphene heating layers 20 in the multiple second heating parts 23 located on both sides of the first heating part 22 is greater than the number of graphene heating layers 20 in the first heating part 22. In this way, the heating efficiency when the first heating part 22 is controlled to work alone is different from the heating efficiency when the multiple second heating parts 23 on both sides of the first heating part 22 are controlled to work. Therefore, the heating power in the pot body 3 is different when the first heating part 22 is controlled to work and when the multiple second heating parts 23 on both sides of the first heating part 22 are controlled to work, thereby enabling cooking with different power requirements.

[0080] Of course, the sum of the numbers of the graphene heating layers 20 in the plurality of second heating parts 23 located on both sides of the first heating part 22 may also be designed to be smaller than the number of the graphene heating layers 20 in the first heating part 22 .

[0081] Specifically, the heating power of each graphene heating layer 20 is the same.

[0082] In a specific application, the first heating section 22 includes two graphene heating layers 20, the number of the second heating sections 23 is two, and any second heating section 23 includes one graphene heating layer 20, so that the sum of the number of graphene heating layers 20 in the two second heating sections 23 is the same as the number of graphene heating layers 20 in the first heating section 22. Alternatively, the first heating section 22 includes two graphene heating layers 20, the number of the second heating sections 23 is two, and any second heating section 23 includes two graphene heating layers 20, so that the sum of the number of graphene heating layers 20 in the two second heating sections 23 is different from the number of graphene heating layers 20 in the first heating section 22.

[0083] It is understandable that the number of graphene heating layers 20 included in the first heating unit 22 can also be other values, such as four, six, eight, etc. The number of graphene heating layers 20 included in any second heating unit 23 can also be other values, such as three, four, five, six, seven, eight, etc.

[0084] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, along the first direction, the second heating parts 23 on both sides of the first heating part 22 are symmetrically arranged relative to the first heating part 22.

[0085] In this embodiment, the second heating parts 23 on both sides of the first heating part 22 are symmetrically arranged relative to the first heating part 22. This design enables the parts corresponding to the second heating parts 23 in the pot body 3 to be heated more evenly when the second heating parts 23 on both sides of the first heating part 22 are working. At the same time, this design also facilitates the coating of the graphene heating layer 20 and reduces the manufacturing cost.

[0086] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the electrical connection portion 21 in the first heating portion 22 is located at both ends of the graphene heating layer 20 along the second direction, and the electrical connection portion 21 in the second heating portion 23 is located at both ends of the graphene heating layer 20 along the second direction; the first direction is different from the second direction.

[0087] In this embodiment, the electrical connection parts 21 are provided at both ends of the graphene heating layer 20 along the second direction, so that the arrangement of the electrical connection parts 21 can be more orderly, thereby facilitating the wiring of each electrical connection part 21 .

[0088] Optionally, the first direction and the second direction are perpendicular to each other.

[0089] Optionally, the first heating part 22 and the second heating part 23 are arranged side by side along the first direction.

[0090] In some embodiments, optionally, any heating part 2 is arranged in a ring shape, and at least one heating part 2 is arranged around another heating part 2.

[0091] In this embodiment, any heating part 2 is designed in a ring shape, and at least one heating part 2 is arranged outside another heating part 2, so that when the at least two heating parts 2 are controlled respectively, the shapes of the at least two heating parts 2 are more suitable for the shape of the bottom wall of the pot body 3, thereby improving the heating efficiency.

[0092] As shown in Figure 6 and Figure 7 , in some embodiments, optionally, any heating part 2 comprises a wear-resistant insulation layer 24 arranged on the surface of the graphene heating layer 20, and the electric connection part 21 at least partially does not overlap with the wear-resistant insulation layer 24.

[0093] In this embodiment, the wear-resistant insulation layer 24 is arranged on the heating part 2, which can increase the wear resistance and insulation performance of the heating part 2, avoid the situation that the coating of the heating part 2 is lost due to repeated friction during use, and cause damage to the heating part 2, and ensure the use safety performance of the heating assembly 100. At the same time, at least a part of the electric connection part 21 does not overlap with the wear-resistant insulation layer 24, so as to realize the electrical connection of the heating part 2.

[0094] Optionally, as shown in Figure 6 and Figure 7 , an insulating coating 25 is arranged between the graphene heating layer 20 and the substrate 1.

[0095] In some embodiments, optionally, the electric connection part 21 comprises a silver electrode and / or the substrate 1 comprises microcrystalline glass.

[0096] In this embodiment, the silver electrode has good conductivity, which ensures the reliability of the graphene heating layer 20. The microcrystalline glass has high strength and good tensile, compression and bending resistance, thereby improving the service life of the heating assembly 100.

[0097] According to an embodiment of the utility model, a cooking utensil 200 is further provided, which comprises the heating assembly 100 according to any of the above embodiments.

[0098] The cooking utensil 200 provided by the utility model has all the beneficial effects of the heating assembly 100.

[0099] As shown in Figure 3 , in some embodiments, optionally, the cooking utensil 200 further comprises a pot body 3, and the heating assembly 100 is used for heating the pot body 3.

[0100] In this embodiment, the cooking appliance 200 further includes a pot body 3, and the heating assembly 100 is used to heat the pot body 3 to cook the food in the pot body 3. The heating assembly 100 includes at least two heating parts 2, each of which includes a graphene heating layer 20. The graphene heating layers 20 in the at least two heating parts 2 are independently energized through corresponding electrical connections 21, thereby enabling independent control of the at least two heating parts 2, so that the pot body 3 can be maintained in a boiling state without causing the liquid in the pot body 3 to overflow.

[0101] In some embodiments, optionally, the heating assembly 100 is at least arranged opposite to the bottom wall of the pot body 3.

[0102] In this embodiment, the heating component 100 is at least arranged opposite to the bottom wall of the pot body 3, so that the heating component 100 provides heat to the bottom wall of the pot body 3, thereby transferring heat from the bottom to the upper side of the pot body 3, thereby achieving cooking of the ingredients in the pot body 3.

[0103] like Figure 3 As shown, in some embodiments, optionally, the pot body 3 includes a cooking cavity 30, and at least a portion of the bottom wall of the pot body 3 is an arc-shaped structure 31 that arches into the cooking cavity 30; wherein, the graphene heating layer 20 is arranged to avoid the maximum distance between the heating component 100 and the arc-shaped structure 31, or the curvature of the arc-shaped structure 31 is less than or equal to 2 mm.

[0104] In this embodiment, the pot body 3 includes a cooking cavity 30. At least a portion of the bottom wall of the pot body 3 arches into the cooking cavity 30, forming a curved structure 31. This increases the area of ​​the bottom wall and thereby improves heating efficiency. Furthermore, as the curvature of the bottom wall of the pot body 3 decreases, the heat exchange efficiency improves, allowing the heat generated by the graphene heating layer 20 to be quickly transferred to the cooking cavity 30 of the pot body 3. If the curvature of the bottom wall of the pot body 3 is too large, the heat generated by the graphene heating layer 20 cannot be transferred to the cooking cavity 30 of the pot body 3 in a timely manner. In this case, the temperature of the graphene heating layer 20 rises rapidly, exceeding the operating temperature of the graphene heating layer 20, thereby causing the graphene heating layer 20 to burn. Therefore, the graphene heating layer 20 is positioned away from the maximum curvature of the curved structure 31, or the curvature of the curved structure 31 is designed to be less than or equal to 2 mm, thereby ensuring the heating efficiency of the graphene heating layer 20.

[0105] Optionally, the thickness of the bottom wall of the pot body 3 is any value among 0.5 mm, 1 mm, 1.5 mm, and 2 mm.

[0106] In some embodiments, optionally, the sum of the areas of at least two heating parts 2 is a first area, the area of ​​the bottom wall of the pot body 3 is a second area, and the first area is less than or equal to the second area.

[0107] In this embodiment, the first area is less than or equal to the second area, so that the area of the graphene heating layer 20 is close to or smaller than the area of the bottom wall of the pot body 3, which can increase the heat transfer area and improve the heat exchange efficiency, and can also avoid waste of heat.

[0108] Optionally, the absolute value of the difference between the first area and the second area is less than or equal to 30 cm 2 .

[0109] Optionally, the absolute value of the difference between the first area and the second area is designed to be any value in 5 cm 2 , 10 cm 2 , 15 cm 2 , 20 cm 2 , 25 cm 2 , 30 cm 2 .

[0110] As Figure 4 shown, in some embodiments, the cooking utensil 200 further comprises a control device electrically connected with the at least two heating parts 2, for controlling the at least two heating parts 2 to work respectively.

[0111] In this embodiment, the cooking utensil 200 further comprises a control device electrically connected with the at least two heating parts 2, and the control device can control the at least two heating parts 2 to work respectively, so that the at least two heating parts 2 can work individually, thereby being able to start all the heating parts 2 to realize rapid heating when rapid heating is needed, and being able to start one or several heating parts 2 to realize the maintenance of the boiling state and avoid the overflow of the liquid in the pot body 3 when the boiling state needs to be maintained.

[0112] In specific applications, the graphene heating paste is printed on the substrate 1 to form a graphene heating film, and the substrate 1 can be microcrystalline glass, high borosilicate glass, etc., and each graphene heating film can be controlled individually. The height of the bottom of the pot body 3 from the horizontal plane is called the bottom curvature. The area of the pot body 3 and the bottom curvature determine the speed of heat exchange between the graphene heating film and the pot body 3.

[0113] Specifically, to increase the power of the graphene heating film, the matching of the pot body 3 and the graphene heating film is very important. Generally, the heating area of the graphene heating film is designed to be basically close to the area of the bottom of the pot body 3 (for example, the inner container), and the absolute value of the area difference is < 30 cm 2The smaller the inner container bottom curvature is, the better. The inner container bottom curvature is less than 2mm, and the smaller the curvature is, the better. The area of the graphene heating film is close to the area of the bottom of the inner container, which can increase the heat transfer area and improve the heating power. Secondly, under the same heating power, the smaller the inner container bottom curvature is, the better the heat exchange efficiency is, and the heat generated by the heating film can be quickly transferred to the pot body 3. When the inner container bottom curvature is greater than 2mm, the heat generated by the graphene heating film cannot be quickly transferred to the pot body 3, at this time, the temperature of the graphene heating film rises sharply, which exceeds the use temperature of the graphene heating film, thereby causing the graphene heating film to be burned out.

[0114] When the water is boiled by high power, the rice cooked is sweet and delicious, and it is necessary to keep the water in the pot body 3 boiling after boiling. Figure 5 As shown in the related art, the pot body is heated by the heating disc, and when the water is boiled, if it is still heated by high power, the pot will overflow. When the on-off mode is used, the heating power is repeatedly switched between the maximum power and the power of 0, that is, the power of the heating disc after being powered off is 0, and cannot be controlled alone. After several times of reciprocation, the water cannot maintain the boiling state. The embodiments provided in the present application need to maintain the water in the pot body 3 boiling without overflowing, and need to use the on-off mode like the traditional heating disc, only some or several segments of the graphene heating film need to be closed, and the other heating segments (for example, the heating part 2) need to be kept open. At this time, the heating power will be reduced, but will not be reduced to 0 power, which is enough to maintain the continuous boiling of the water, and the number of disconnected segments and the number of retained segments can be adjusted according to the needs.

[0115] In addition, we can also control the sufficient exchange of heat flow in the pot body 3 according to our needs. When the two heating films on the inner surface (for example, the first heating part 22) are turned on, the inner surface temperature is high, and at this time the heat exchange is from the inside to the outside. On the contrary, when the two heating films on the outside (for example, the second heating part 23 on both sides of the first heating part 22) are turned on, the outer surface temperature is high, and at this time the heat exchange is from the outside to the inside. The same logic can also control the transfer of heat from left to right or from right to left. The sufficient exchange of heat is beneficial to improve the taste of rice and make the rice meet the user's satisfaction.

[0116] Embodiment 1: Taking a 2L small rice cooker inner container as an example, 1 cup of rice is cooked, wherein the rice is 140g and the water is 240g, and the rice is required to be cooked within 30 minutes. The area of the bottom of the inner container is 180cm 2 , the heating area of the graphene heating film is 180cm 2 , the heating area of the graphene heating film is basically the same as the area of the bottom of the inner container, the inner container bottom curvature is 0.3mm, and the segmentation mode of the graphene heating film is as shown in Figure 1The power of the graphene heating film can reach 500 W, and the time for cooking 1 cup of rice is 27 min. After the water is boiled, the heating is performed in the inner-outer segmented mode to maintain the boiling of the water. The rice is soft and sweet.

[0117] Example 2: Taking the inner container of a 2L small rice cooker as an example, 1 cup of rice is cooked, wherein the rice is 140 g, the water is 240 g, and the rice is required to be cooked within 30 min. The area of the bottom surface of the inner container is 180 cm 2 , the heating area of the graphene heating film is 160 cm 2 , the heating area of the graphene heating film is slightly smaller than the area of the bottom of the inner container, the bottom arc of the inner container is 0.3 mm, and the segmented mode of the graphene heating film is as shown in Figure 1 . The power of the graphene heating film can reach 460 W, and the time for cooking 1 cup of rice is 29 min. The time for the water to change from normal temperature to boiling is longer, but still within the time requirement. After the water is boiled, the heating is performed in the inner-outer segmented mode to maintain the boiling of the water. The rice is soft and sweet.

[0118] Example 3: Taking the inner container of a 2L small rice cooker as an example, 1 cup of rice is cooked, wherein the rice is 140 g, the water is 240 g, and the rice is required to be cooked within 30 min. The area of the bottom surface of the inner container is 180 cm 2 , the heating area of the graphene heating film is 160 cm 2 , the heating area of the graphene heating film is slightly smaller than the area of the bottom of the inner container, the bottom arc of the inner container is 0.6 mm, and the segmented mode of the graphene heating film is as shown in Figure 1 . The power of the graphene heating film can reach 460 W, and the time for cooking 1 cup of rice is 30 min. The time for the water to change from normal temperature to boiling is longer, but still within the time requirement. After the water is boiled, the heating is performed in the inner-outer segmented mode to maintain the boiling of the water. The rice is soft and sweet.

[0119] Comparative Example 1: Taking the inner container of a 2L small rice cooker as an example, 1 cup of rice is cooked, wherein the rice is 140 g, the water is 240 g, and the rice is required to be cooked within 30 min. The area of the bottom surface of the inner container is 180 cm 2 , the heating area of the graphene heating film is 120 cm 2 , the heating area of the graphene heating film is significantly smaller than the area of the bottom of the inner container, the bottom arc of the inner container is 0.3 mm, and the segmented mode of the graphene heating film is as shown in Figure 1 . The power of the graphene heating film can reach 300 W, and the time for cooking 1 cup of rice is 40 min. The time for the water to change from normal temperature to boiling is significantly longer, which cannot meet the requirement.

[0120] Example 2: Taking a 2L small rice cooker inner container as an example, 1 cup of rice is cooked, wherein the rice is 140g, the water is 240g, and the rice is required to be cooked within 30 minutes. The area of the bottom surface of the inner container is 180cm 2 , the heating area of the graphene heating film is 220cm 2 , the heating area of the graphene heating film is much larger than the area of the bottom of the inner container, the curvature of the bottom of the inner container is 0.3mm, and the segmented mode of the graphene heating film is as shown in Figure 1 . The power of the graphene heating film can reach 600W, and the time for cooking 1 cup of rice is 25min. Although the cooking time is shortened, since the area of the heating film is much larger than the area of the bottom of the inner container, the heat generated by part of the graphene heating film cannot be transferred in time during use, resulting in excessive temperature of the graphene heating film, and the graphene heating film is burned out after long-term use, and the entire product cannot be used.

[0121] Example 3: Taking a 2L small rice cooker inner container as an example, 1 cup of rice is cooked, wherein the rice is 140g, the water is 240g, and the rice is required to be cooked within 30 minutes. The area of the bottom surface of the inner container is 180cm 2 , the heating area of the graphene heating film is 180cm 2 , the heating area of the graphene heating film is basically the same as the area of the bottom of the inner container, the curvature of the bottom of the inner container is 2.1mm, and the segmented mode of the graphene heating film is as shown in Figure 1 . The power of the graphene heating film can reach 500W, but the heat exchange between the graphene heating film and the inner container is slow at this time, and when we continuously heat at 500W, the heat accumulates on the graphene heating film, resulting in excessive temperature of the graphene heating film, and the graphene heating film is burned out. When we use the on-off mode for heating, the average power is greatly reduced, and continuous heating is not possible, and the cooking time exceeds 30min.

[0122] Example 4: Taking a 2L small rice cooker inner container as an example, 1 cup of rice is cooked, wherein the rice is 140g, the water is 240g, and the rice is required to be cooked within 30 minutes. The area of the bottom surface of the inner container is 180cm 2 , the heating area of the graphene heating film is 180cm 2 , the heating area of the graphene heating film is basically the same as the area of the bottom of the inner container, the curvature of the bottom of the inner container is 0.3mm, and there is no segmented heating. At this time. The water is heated from room temperature to rapid boiling, but after rapid boiling, continuous high-power heating occurs, which causes the pot to overflow, affecting user use. If the on-off mode is used for heating, the rice taste is poor, affecting user experience.

[0123] In the utility model, the term "a plurality of" refers to two or more than two, unless otherwise expressly limited. The terms "mounting", "connected", "connected", "fixed" and the like should be broadly understood, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0124] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0125] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A heating assembly, characterized by, The heating assembly comprises: a substrate; at least two heating parts arranged on the substrate, each of the heating parts comprising a graphene heating layer and an electrical connection part electrically connected to the graphene heating layer, so that the graphene heating layers in the at least two heating parts can be separately powered through the corresponding electrical connection parts, wherein the at least two heating parts do not overlap on the substrate.

2. The heating assembly of claim 1, wherein, The heating part comprises: a first heating part arranged on the substrate; a plurality of second heating parts arranged on the substrate, the plurality of second heating parts being located around the first heating part, and the first heating part and the second heating parts being separately powered through the corresponding electrical connection parts.

3. The heating assembly of claim 2, wherein, The plurality of second heating parts are respectively located on two sides of the first heating part along a first direction.

4. The heating assembly of claim 3, wherein, The first heating part comprises at least two graphene heating layers, and the at least two graphene heating layers in the first heating part are respectively bent in directions away from each other along the first direction.

5. The heating assembly of claim 4, wherein, Along the first direction, the second heating parts on both sides of the first heating part are arranged in directions away from each other. Each of the second heating parts comprises at least one graphene heating layer.

6. The heating assembly of claim 4, wherein, The sum of the number of graphene heating layers in the plurality of second heating parts located on both sides of the first heating part is greater than or equal to the number of graphene heating layers in the first heating part.

7. The heating assembly of claim 3, wherein, Along the first direction, the second heating parts on both sides of the first heating part are symmetrically arranged relative to the first heating part.

8. The heating assembly of claim 3, wherein, The electrical connection parts in the first heating part are located at both ends of the graphene heating layer along a second direction, and the electrical connection parts in the second heating parts are located at both ends of the graphene heating layer along the second direction. The first direction is different from the second direction.

9. The heating assembly of claim 1, wherein, Each of the heating parts is arranged in a ring shape, and at least one of the heating parts surrounds another heating part.

10. The heating assembly of claim 1, wherein, Each of the heating parts comprises a wear-resistant insulating layer arranged on the surface of the graphene heating layer, and the electrical connection part at least partially does not overlap with the wear-resistant insulating layer.

11. The heating assembly of any one of claims 1 to 10, wherein, The electrical connection part comprises a silver electrode, and / or the substrate comprises microcrystalline glass.

12. A cooking appliance characterized by, The heating assembly comprises: The heating assembly according to any one of claims 1 to 11.

13. The cooking appliance of claim 12, wherein, Further comprising: a pot body, and the heating assembly is used to heat the pot body.

14. The cooking appliance of claim 13, wherein, The heating assembly is arranged opposite to the bottom wall of the pot body.

15. The cooking appliance of claim 14, wherein, The pot body comprises a cooking cavity, and at least a portion of the bottom wall of the pot body is an arc-shaped structure arched into the cooking cavity, wherein the graphene heating layer is arranged at a maximum distance between the heating assembly and the arc-shaped structure, or the radius of the arc-shaped structure is less than or equal to 2 mm.

16. The cooking appliance of claim 14, wherein, The sum of the areas of the at least two heating parts is a first area, and the area of the bottom wall of the pot body is a second area, and the first area is less than or equal to the second area.

17. The cooking appliance according to any one of claims 12 to 16, characterized in that, Further comprising: a control device electrically connected to the at least two heating parts and used to separately control the operation of the at least two heating parts.

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