Cooking vessel and cooking appliance

Abstract

The application provides a cooking container and a cooking appliance. The cooking container comprises a ceramic body, a heating layer arranged on at least part of the ceramic body, and a functional layer arranged on the heating layer and at least part of the ceramic body, wherein part of the functional layer arranged on the ceramic body is in contact with the ceramic body. In the application, part of the ceramic body is directly connected with the functional layer, and glaze dipping and sintering are not required, so that the bonding force between the ceramic body and the functional layer is ensured, the manufacturing process of the cooking container is simplified, the production efficiency of the cooking container is improved, and the cost of the cooking container is reduced.

Description

TECHNICAL FIELD

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

[0002] In the related art, the surface of the ceramic embryo has a hard glaze layer, which is smooth and delicate and easy to clean, and is conducive to preventing water and other substances from penetrating into the ceramic embryo. However, the presence of the glaze layer also causes the adhesion of the non-stick coating and other functional layers to decrease, making it impossible to spray non-stick coating inside the ceramic liner, which causes the rice to stick inside the liner. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art.

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

[0005] The second aspect of the present application provides a cooking appliance.

[0006] The first aspect of the present application provides a cooking container, comprising: a ceramic embryo; a heating layer disposed on at least a portion of the ceramic embryo; and a functional layer disposed on the heating layer and at least a portion of the ceramic embryo, wherein a portion of the functional layer disposed on the ceramic embryo is in contact with the ceramic embryo.

[0007] The cooking container provided by the present application comprises a ceramic embryo, and a heating layer and a functional layer disposed on the ceramic embryo. The heating layer is disposed on at least a portion of the ceramic embryo, and the functional layer is disposed on the heating layer and at least a portion of the ceramic embryo. In addition, a portion of the functional layer disposed on the ceramic embryo is in contact with the ceramic embryo. That is, the surface of the portion of the ceramic embryo connected with the functional layer is not subjected to glaze immersion and sintering treatment, and there is no glaze layer on the surface of the portion of the ceramic embryo.

[0008] Therefore, in the cooking container provided by the present application, a portion of the ceramic embryo can be directly connected with the functional layer without glaze immersion and sintering treatment. In this way, there is no glaze layer on the portion of the ceramic embryo directly connected with the functional layer, which ensures the roughness of the surface of the portion of the ceramic embryo, allows the functional layer to be directly connected to the ceramic embryo, and ensures the adhesion between the ceramic embryo and the functional layer, simplifies the manufacturing process of the entire cooking container, and thus improves the production efficiency of the cooking container and reduces the cost of the cooking container.

[0009] Further, the surface of the part of the ceramic body connected with the functional layer is not subjected to glaze soaking sintering treatment, so that the part of the functional layer is directly in contact with the ceramic body. In this way, during use of the cooking container, the heat of the ceramic body can be directly transmitted to the functional layer, reducing the accumulation of heat between the ceramic body and the functional layer, improving the adhesion of the functional layer on the ceramic body, and thereby reducing the risk of the functional layer falling off.

[0010] In addition, during use of the cooking container, the heating layer has a certain heating temperature under the action of the heat source, thereby heating the food inside the cooking container. The use of the above-mentioned ceramic body makes the cooking container have the safe and sanitary characteristics that metal utensils cannot match. Moreover, the ceramic body releases a certain degree of infrared during heating, and the cooking effect is better. Furthermore, the heat insulation effect of ceramic is better, which can greatly improve the heat preservation effect.

[0011] Specifically, the heating temperature of the heating layer refers to the temperature of the heating layer itself during use of the cooking container, and is the heating temperature measured when the heating layer does not dry out under the condition that the heating platform inputs a set power.

[0012] Further, the above-mentioned functional layer can be a non-stick layer, thereby making the inner wall of the cooking container not only have good heat transfer but also have good non-stick properties, avoiding the phenomenon that the cooked food sticks to the cooking container during heating. Specifically, the non-stick coating can be prepared by using silica, silicone oil, FPA (tetrafluoroethylene and perfluoropropyl ethylene copolymer, also known as soluble polytetrafluoroethylene), PTFE (polytetrafluoroethylene), PEEK (polyether ether ketone), and PEKK (polyether ketone ketone) and the like.

[0013] In some possible designs, the water absorption rate of the ceramic body is less than or equal to 0.1%.

[0014] In this design, the water absorption rate of the ceramic body is less than or equal to 0.1%. Specifically, the water absorption rate of the above-mentioned ceramic body is less than or equal to 0.1%, thereby making the water absorption rate of the ceramic body itself very low, and making the ceramic body be able to be directly in contact with liquid without the need for protection by a glaze layer. Therefore, the water absorption rate of the ceramic body in the cooking container proposed by the present application is less than or equal to 0.1%, which can directly cancel the glaze layer arranged between the ceramic body and the functional layer in the related art.

[0015] In addition, the water absorption of the ceramic body is less than or equal to 0.1%, which can ensure that the cooking container will not cause the functional layer / heat generating layer of the cooking container to fall off due to the continuous water absorption of the ceramic body during a long-time cooking process, thereby ensuring the service life of the entire cooking container. Moreover, the water absorption of the ceramic body is less than or equal to 0.1%, which improves the flatness of the adhesion of the functional layer and the heat generating layer on the ceramic body, reduces the generation of cracks on the functional layer and the heat generating layer, and improves the service life of the functional layer and the heat generating layer and the uniformity of the heat generation of the heat generating layer.

[0016] It should be noted that the test method of the water absorption of the ceramic body is as follows: take a sample with an area of 10 cm 2 on the ceramic body (take 1 sample at the bottom of the ceramic body and 2 samples on the side of the ceramic body, and the above samples are not polished), dry the sample in an oven at 110℃±5℃ to a constant weight G (i.e. the difference between the two consecutive weights every 12h is less than 0.1% to be considered as constant weight), then cool to room temperature, then heat the sample in a heater (keep the samples from contacting each other, and the water surface should be higher than the sample by 5cm during the entire test process), heat the water to boiling and maintain boiling for 2h, then cut off the heat source, and let the sample cool completely in water for 4h±15min to room temperature, then measure the weight G1 after the sample is taken out vertically without water droplets, and the water absorption of the ceramic body = ((G1-G) / G)×100%.

[0017] In some possible designs, the weight percentage of Al2O3 is greater than 22% and less than or equal to 30%; the weight percentage of SiO2 is greater than 66% and less than or equal to 70%; and the weight percentage of Li2O is greater than 2% and less than or equal to 5%.

[0018] In this design, the weight percentage of Al2O3 is greater than 22% and less than or equal to 30%. In this way, through the above setting of Al2O3, the ceramic body has high strength and hardness, small high-frequency dielectric loss, high high-temperature insulation resistance, good chemical corrosion resistance and good thermal conductivity.

[0019] In addition, the weight percentage of SiO2 is greater than 66% and less than or equal to 70%. In this way, the silicon oxide enhances the melting temperature of the ceramic body, increases the melting temperature range, increases the high-temperature viscosity of the ceramic body, reduces the thermal expansion coefficient, and increases the hardness. Thus, the deformation resistance of the cooking container is improved in a high-temperature environment, and the service life of the cooking container is prolonged.

[0020] In addition, the weight percentage of Li2O is greater than 2% and less than or equal to 5%. In this way, the ceramic body has good fluxing energy. Thus, the heat transfer efficiency of the cooking container after the heat generating layer is heated is improved, and the cooking efficiency is improved.

[0021] In addition, the application optimizes the raw material proportion of the above-mentioned Al2O3, SiO2 and Li2O in the ceramic body, promotes the reduction of the water absorption rate of the ceramic body itself, and further improves the flatness of the functional layer and the heating layer attached to the ceramic body, reduces the generation of cracks on the functional layer and the heating layer, and improves the service life of the functional layer and the heating layer and the uniformity of the heating of the heating layer.

[0022] In some possible designs, the ceramic body further comprises zinc oxide, iron oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, titanium oxide, and the like, which are not discussed here.

[0023] In some possible designs, the heating layer is arranged on the inner surface of the ceramic body.

[0024] In this design, the heating layer is arranged on the inner surface of the ceramic body. In this way, during the use of the cooking container, the heating layer can be ensured to be closer to the food in the cooking container, and the ceramic body can play a certain heat preservation role. In addition, during daily use, the ceramic body can also play a certain protection role on the heating layer and the functional layer, so as to avoid damage to the heating layer and the functional layer.

[0025] In some possible designs, the heating layer is in contact with the ceramic body.

[0026] In this design, the heating layer is in contact with the ceramic body. That is, the surface of the part of the ceramic body connected with the heating layer is also not subjected to glaze immersion and sintering treatment, and the surface of the part of the ceramic body does not exist a glaze layer. In this way, the surface of the part of the ceramic body connected with the heating layer does not exist a glaze layer, so as to ensure the roughness of the surface of the part of the ceramic body, enable the heating layer to be directly connected to the ceramic body, and ensure the bonding force between the ceramic body and the heating layer, simplify the manufacturing process of the entire cooking container, and further improve the production efficiency of the cooking container and reduce the cost of the cooking container.

[0027] In some possible designs, the sintering temperature of the ceramic body is greater than or equal to 1000 DEG C and less than or equal to 1500 DEG C.

[0028] In this design, the sintering temperature of the ceramic body is greater than or equal to 1000 DEG C and less than or equal to 1500 DEG C. That is, during the manufacturing of the ceramic body, the Al2O3, SiO2, Li2O and other materials are first uniformly mixed, and then sintered through a sintering temperature of 1000 DEG C to 1500 DEG C, so as to obtain a ceramic body with a low water absorption rate. Specifically, the sintering temperature of the ceramic body can be 1300 DEG C.

[0029] Further, the present application improves the raw material ratio of the ceramic body and the sintering temperature, so that the ceramic body obtained by sintering has a lower water absorption, and thus the ceramic body does not need to be subjected to glaze immersion and sintering treatment, thereby improving the flatness of the functional layer and the heating layer attached to the ceramic body, reducing the cracks on the functional layer and the heating layer, and improving the service life of the functional layer and the uniformity of the heating layer.

[0030] In some possible designs, the heating layer is connected to at least part of the ceramic body by water pasting.

[0031] In this design, the heating layer can be connected to at least part of the ceramic body by water pasting. Specifically, in the preparation process, the heating layer is soaked with water and directly pasted on the ceramic body, and then the water is rolled away to make the heating layer flat; and then the heating layer is sintered on the ceramic body by sintering.

[0032] Particularly, in the case of water pasting, the part of the ceramic body connected with the above-mentioned heating layer is polished to reduce the roughness of the part.

[0033] In some possible designs, the heating layer is connected to at least part of the ceramic body by thermal spraying.

[0034] In this design, the heating layer can be connected to at least part of the ceramic body by thermal spraying. Specifically, in the preparation process, the raw material (such as silver or other metals) of the heating layer is directly sprayed on the ceramic body by using external tools. Particularly, in the case of thermal spraying, the part of the ceramic body connected with the above-mentioned heating layer does not need to be polished.

[0035] In some possible designs, the roughness of the part of the ceramic body connected with the heating layer is less than or equal to the roughness of the part of the ceramic body connected with the functional layer.

[0036] In this design, the roughness of the part of the ceramic body connected with the heating layer is less than or equal to the roughness of the part of the ceramic body connected with the functional layer. In this way, the flatness of the surface of the heating layer can be effectively improved, the formation of wrinkles can be reduced, and the heating efficiency can be improved (especially for the heating layer formed by the film pasting process, the improvement of flatness is more obvious). Moreover, the flow flatness during implementation of the functional layer can be improved, the uniformity of the thickness of the functional layer can be improved, the bonding strength between the functional layer and the ceramic body directly connected therewith can be improved, and the anti-peeling performance of the functional layer as a whole can be improved.

[0037] In some possible designs, the flatness of the surface of the part of the functional layer connected to the heating layer is less than or equal to the flatness of the surface of the part of the functional layer connected to the ceramic base body.

[0038] In this design, during use of the cooking vessel, the heating layer can release heat to heat food, and part of the heat needs to be conducted to the location where the food is located through the functional layer. To this end, in the cooking vessel provided in the present application, the flatness of the surface of the part of the functional layer connected to the heating layer is less than or equal to the flatness of the surface of the part of the functional layer connected to the ceramic base body, so as to improve the uniformity of heat transfer between the heating layer and the functional layer, so that the heat is quickly and uniformly transferred to the inside of the ceramic base body. Correspondingly, the heat is also prevented from being accumulated in the functional layer, and thus the risk of the functional layer being detached due to thermal stress is reduced.

[0039] In addition, the part of the functional layer connected to the ceramic base body has a relatively high flatness of the surface, and in particular when the part is located at the upper part of the ceramic base body, heat is usually transferred in the form of heat radiation, and the relatively high flatness of the part is conducive to absorption of the heat radiation energy, promotes the heat transfer of the part, and thus promotes the uniformity of heat of the ceramic base body.

[0040] In some possible designs, the roughness of the connection interface between the functional layer and the heating layer is less than or equal to the roughness of the connection interface between the functional layer and the ceramic base body.

[0041] In this design, the roughness of the connection interface between the functional layer and the heating layer is less than or equal to the roughness of the connection interface between the functional layer and the ceramic base body. In this way, the heat transfer between the functional layer and the heating layer is promoted, the heat is prevented from being accumulated between the connection interface between the functional layer and the heating layer, the bonding force between the functional layer and the heating layer is improved, and thus the risk of the functional layer being detached from the heating layer is reduced.

[0042] In some possible designs, the roughness of the connection interface between the heating layer and the ceramic base body is greater than or equal to the roughness of the connection interface between the functional layer and the ceramic base body; and the heating layer is connected to at least part of the ceramic base body by thermal spraying.

[0043] In the design, the heat generating layer is connected to at least part of the ceramic base body by thermal spraying, and the roughness of the connecting interface between the heat generating layer and the ceramic base body is greater than or equal to the roughness of the connecting interface between the functional layer and the ceramic base body. In this way, the bonding force between the heat generating layer and the ceramic base body can be improved. Moreover, the porosity of the heat generating layer formed by thermal spraying is high, and the generated heat can be easily dispersed and transferred, and the heat generating uniformity is high. The roughness of the connecting interface between the heat generating layer and the ceramic base body is high, the contact area between the heat generating layer and the ceramic base body can be increased, the heat transfer to the ceramic base body side can be promoted, the temperature difference between the ceramic base body and the non-stick coating can be reduced, and the bonding force between the non-stick coating and the ceramic base body can be improved.

[0044] In some possible designs, the roughness of the connecting interface between the heat generating layer and the ceramic base body is greater than or equal to the roughness of the connecting interface between the heat generating layer and the functional layer.

[0045] In the design, the roughness of the connecting interface between the heat generating layer and the ceramic base body is greater than or equal to the roughness of the connecting interface between the heat generating layer and the functional layer. In this way, the surface of the part of the heat generating layer connected to the functional layer is a rough surface, thereby improving the bonding force between the functional layer and the heat generating layer, and increasing the contact area between the functional layer and the heat generating layer, reducing the accumulation of heat in the functional layer, and improving the bonding force between the functional layer and the heat generating layer. In addition, the surface of the ceramic base body connected to the heat generating layer is also a rough surface.

[0046] Further, the roughness of the connecting interface between the heat generating layer and the ceramic base body is greater than or equal to the roughness of the connecting interface between the heat generating layer and the functional layer. In this way, since the thickness of the ceramic base body is high and the thermal conductivity is low, the roughness of the connecting interface between the heat generating layer and the ceramic base body is large, which can improve the uniformity of heat transfer to the ceramic base body, reduce the accumulation of heat in the ceramic base body, and improve the cold and hot impact resistance of the ceramic base body.

[0047] In some possible designs, the heat generating layer comprises: a first heat generating film arranged at the middle region of the bottom wall of the ceramic base body; and a second heat generating film arranged at at least part of the circumferential edge of the first heat generating film, and the first heat generating film and the second heat generating film have a spacing therebetween.

[0048] In the design, the heat generating layer is arranged in sections. Specifically, the heat generating layer comprises a first heat generating film and a second heat generating film, and the second heat generating film is arranged at at least part of the circumferential edge of the first heat generating film, and the first heat generating film and the second heat generating film have a spacing therebetween. In this way, for the heat generating layer, the functional layer opposite to the spacing will be directly connected to the ceramic base body, and the thickness of the functional layer opposite to the spacing is large, at this time, the bonding force between the functional layer and the ceramic base body is high, a pulling force is formed on the surrounding functional layer, and the peeling of the part of the functional layer connected to the heat generating layer is reduced.

[0049] Furthermore, the spacing ensures that the first and second heating films do not overlap. Although no heating area is located in the spacing, it receives heat conducted from both the first and second heating films, thus generating heat within the spacing itself. However, this heat, generated through heat conduction, is at a lower temperature than that of the first and second heating films. Therefore, the design of the first and second heating films creates a temperature difference within the cooking container, resulting in a higher heating capacity at the location of the first and second heating films compared to the area between them. Consequently, the liquid heated by the first and second heating films boils more easily, while the liquid heated by the area corresponding to the spacing is less likely to boil.

[0050] In this way, during the use of the cooking container, a convection effect can be formed between the liquid heated by the first heating film and the second heating film and the liquid heated in the interval, so that the liquid heated by the first heating film and the second heating film is initially in a boiling state. The liquid in the initial boiling state is constantly disturbed in the cooking container, which on the one hand improves the heating effect and heating uniformity of all liquids in the cooking container, and on the other hand enhances the boiling effect of the liquid during the heating process, thus greatly improving the visual effect of the cooking container during use.

[0051] Furthermore, a good bubbling effect helps to further enhance the cooking effect and taste of food. For example, when a user is making soup using this cooking container, the constantly bubbling broth will accelerate the impact and collision between the food and the broth inside the container, making the cooked soup more flavorful.

[0052] In some possible designs, the functional layers corresponding to the spacing are in contact with the ceramic body.

[0053] In this design, the functional layer corresponding to the interval is in contact with the ceramic body, and the ceramic body at this location has not undergone glaze impregnation and sintering treatment; the surface of the ceramic body at this location does not have a glaze layer. This ensures the bonding strength between the functional layer and the ceramic body at this location, guaranteeing a firm connection between the two.

[0054] In some possible designs, the spacing between the central region of the bottom wall of the ceramic body and the edge is greater than or equal to 2 mm and less than or equal to 15 mm.

[0055] In the design, when the heating layer is arranged on the inner surface of the ceramic embryo, the heat generated by the heating layer is directly transmitted to the food, and the heating power is high. Therefore, if the interval size is small, the food in the ceramic embryo is more easily heated by the heat generated by the heating layers on both sides, reducing the existence of temperature difference in the food and reducing the effect of food boiling. If the interval size is large, due to the high heating power, the heat transmission of the interval part is slow, which is easy to cause the risk of rupture of the pot body due to heat concentration in the interval part. Moreover, if the interval size is too large, when the heating layer is processed by the film pasting method, it is easy to cause the unevenness of the heating layer, reducing the uniformity of the heating of the heating layer.

[0056] The interval size of the present application is greater than or equal to 2mm and less than or equal to 15mm, which ensures the heating efficiency of the bottom, and can generate a temperature difference to achieve the boiling effect of boiling, and improve the uniformity of the heating of the heating layer, and reduce the possibility of rupture of the ceramic embryo.

[0057] In some possible designs, the heating layer includes a metal layer, and at least part of the functional layer is connected to the metal layer; wherein the metal layer includes a magnetosensitive metal material.

[0058] In the design, the heating layer includes a metal layer, and at least part of the functional layer is directly connected to the metal layer; and the metal layer includes a magnetosensitive metal material. Specifically, the metal layer will cut the alternating magnetic induction lines under the action of the electromagnetic field to generate eddy current, and the eddy current makes the molecules in the metal layer move at a very high speed in a random manner. The molecules collide and rub to generate heat energy, so that the cooking container heats up at a high speed, thereby realizing heating and cooking food, so as to achieve the purpose of cooking.

[0059] Specifically, the relative magnetic permeability of the magnetosensitive metal material is less than 10. Preferably, the relative magnetic permeability of the magnetosensitive metal material is less than 1.

[0060] In some possible designs, the metal layer is connected to the ceramic embryo.

[0061] In the design, the heating layer includes a metal layer, and the metal layer is directly connected to the ceramic embryo. In particular, since the ceramic embryo has a low water absorption rate, and the cooking container proposed by the present application does not need to be provided with a glaze layer on the surface of the ceramic embryo. Therefore, the above-mentioned metal layer can be directly connected to the ceramic embryo, thereby simplifying the manufacturing process and overall structure of the cooking container.

[0062] In some possible designs, the heating layer further includes a first glaze layer, and the metal layer is connected to the ceramic embryo through the first glaze layer.

[0063] In the design, the heat generating layer further comprises a metal layer and a first glaze layer. The metal layer is connected to the ceramic body through the first glaze layer. In particular, the ceramic body has a low water absorption rate, and the cooking container does not need to be provided with a glaze layer on the surface of the ceramic body. Therefore, the metal layer is connected to the ceramic body through the first glaze layer, which can further improve the connection strength between the metal layer and the ceramic body.

[0064] In some possible designs, the heat generating layer comprises inorganic glaze, and the heat generating layer is connected to the functional layer and the ceramic body through the inorganic glaze.

[0065] In the design, the heat generating layer comprises inorganic glaze, and the heat generating layer is connected to the functional layer and the ceramic body through the inorganic glaze. In this way, the connection strength between the heat generating layer and the functional layer and the connection strength between the heat generating layer and the ceramic body can be further improved.

[0066] Specifically, the inorganic glaze comprises the following components: aluminum oxide, silicon oxide, lithium oxide, and other components such as iron oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, titanium oxide, and the like.

[0067] In some possible designs, the cooking container further comprises a second glaze layer arranged on the outer wall of the ceramic body, and the sintering temperature of the second glaze layer is higher than the melting temperature of the heat generating layer.

[0068] In the design, the cooking container further comprises a second glaze layer. The second glaze layer is arranged on the outer wall of the ceramic body, thereby improving the smoothness of the outer wall of the ceramic body. In addition, the design of the second glaze layer can further protect the ceramic body, thereby ensuring that the outer side of the cooking container has the characteristics of high hardness and wear resistance.

[0069] In some possible designs, the second glaze layer comprises aluminum oxide, silicon oxide and lithium oxide, and in the second glaze layer, the weight percentage of aluminum oxide is greater than or equal to 20% and less than or equal to 30%, the weight percentage of silicon oxide is greater than or equal to 65% and less than or equal to 75%, and the weight percentage of lithium oxide is greater than or equal to 1% and less than or equal to 5%; and / or the second glaze layer comprises aluminum oxide, silicon oxide and lithium oxide, and in the second glaze layer, the weight percentage of aluminum oxide is greater than or equal to 20% and less than or equal to 30%, the weight percentage of silicon oxide is greater than or equal to 65% and less than or equal to 75%, and the weight percentage of lithium oxide is greater than or equal to 1% and less than or equal to 5%.

[0070] The second aspect of the present application provides a cooking appliance, comprising: a heating platform, the heating platform comprising a heating area; and a cooking container according to any of the above designs, the cooking container being capable of being placed on the heating area.

[0071] The cooking utensil provided by the present application comprises the cooking container of any possible design described above, and thus has all the advantages of the cooking container of any possible design described above, which will not be repeated here.

[0072] In addition, the cooking utensil further comprises a heating platform, wherein the heating platform comprises a heating area, and the cooking container can be placed on the heating area, so that the cooking utensil and the cooking container cooperate to heat food.

[0073] In some possible designs, the heating area is an electromagnetic heating area.

[0074] In this design, the heating area is an electromagnetic heating area, and specifically, the electromagnetic heating area is provided with a pipeline arranged in a disc shape, wherein the spacing of the coils in the middle of the bottom is large, and the spacing of the coils around the periphery is small, the cooking container is placed above the electromagnetic heating area, and then the cooking container provided with the heating layer will cut the alternating magnetic induction lines to generate eddy currents, the eddy currents make the molecules in the conductor layer move at a very high speed in a random manner, the molecules collide and rub with each other to generate heat energy, the cooking container is heated at a high speed, and then the heating and cooking of food are realized, so that the purpose of cooking is achieved.

[0075] In addition, the definition of flatness is understandable to those skilled in the art, and the flatness is the deviation of the macro concave-convex height of the interface from the ideal plane.

[0076] In addition, the definition of roughness is understandable to those skilled in the art, and the roughness is the unevenness of the small spacing and the tiny peaks and valleys of the processed surface.

[0077] 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

[0078] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0079] Figure 1 is one of the structural schematic diagrams of the cooking container of one embodiment of the present application;

[0080] Figure 2 is the second structural schematic diagram of the cooking container of one embodiment of the present application;

[0081] Figure 3 is the sectional view of the cooking container of one embodiment of the present application;

[0082] Figure 4 is Figure 3 is the local enlarged view of A of the cooking container shown.

[0083] wherein, Figures 1 to 4 The correspondence between the reference signs and the component names is as follows:

[0084] 100 cooking vessel, 104 ceramic body, 106 heating layer, 108 functional layer, 110 second glaze layer. DETAILED DESCRIPTION

[0085] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below 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.

[0086] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other different manners from those described herein, and therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0087] Some embodiments of the present application will be described below with reference to Figures 1 to 4 to describe the cooking vessel 100 and the cooking appliance provided according to some embodiments of the present application.

[0088] As shown in Figure 1 , Figure 2 and Figure 3 , a first embodiment of the present application proposes a cooking vessel 100, which comprises a ceramic body 104, a heating layer 106 and a functional layer 108.

[0089] Among them, as shown in Figure 3 and Figure 4 , the heating layer 106 is arranged on at least a part of the ceramic body 104; and the functional layer 108 is arranged on both the heating layer 106 and at least a part of the ceramic body 104. In addition, the part of the functional layer 108 arranged on the ceramic body 104 is in contact with the ceramic body 104. That is, the surface of the part of the ceramic body 104 connected with the functional layer 108 is not subjected to glazing sintering treatment, and there is no glaze layer on the surface of the part of the ceramic body 104.

[0090] As shown in Figure 3 and Figure 4 , in the cooking vessel 100 proposed by the present application, the part of the ceramic body 104 can be directly connected with the functional layer 108 without glazing sintering treatment. In this way, there is no glaze layer on the part of the ceramic body 104 directly connected with the functional layer 108, which ensures the roughness of the surface of the part of the ceramic body 104, so that the functional layer 108 can be directly connected on the ceramic body 104, and the bonding force between the ceramic body 104 and the functional layer 108 is ensured, the manufacturing process of the whole cooking vessel 100 is simplified, and thus the production efficiency of the cooking vessel 100 is improved and the cost of the cooking vessel 100 is reduced.

[0091] Further, the surface of the part of the ceramic body 104 connected with the functional layer 108 is not subjected to glaze dipping sintering treatment, so that the part of the functional layer 108 is directly in contact with the ceramic body 104. In this way, during the use of the cooking container 100, the heat of the ceramic body 104 can be directly transmitted to the functional layer 108, reducing the accumulation of heat between the ceramic body 104 and the functional layer 108, improving the adhesion of the functional layer 108 on the ceramic body 104, and thereby reducing the risk of the functional layer 108 falling off.

[0092] In addition, during the use of the cooking container 100, the heating layer 106 has a certain heating temperature under the action of the heat source, thereby heating the food inside the cooking container 100. The use of the above-mentioned ceramic body 104 makes the cooking container 100 have the safe and sanitary characteristics that metal utensils cannot match. Moreover, the ceramic body 104 releases a certain degree of infrared during heating, and the cooking effect is better. Moreover, the heat insulation effect of ceramic is better, which can greatly improve the heat preservation effect.

[0093] Specifically, the heating temperature of the heating layer 106 refers to the temperature of the heating layer 106 itself during the use of the cooking container 100, and is the heating temperature measured when the heating layer 106 does not dry out under the condition that the heating platform inputs a set power.

[0094] Specifically, the above-mentioned functional layer 108 can be a non-stick layer, thereby making the inner wall of the cooking container 100 not only have good heat transfer, but also have good non-stick properties, avoiding the phenomenon that the cooked food sticks to the cooking container 100 during heating.

[0095] Specifically, the non-stick coating can be prepared by using silica, silicone oil, FPA (tetrafluoroethylene and perfluoropropyl ethylene copolymer, also known as soluble polytetrafluoroethylene), PTFE (polytetrafluoroethylene), PEEK (polyether ether ketone), and PEKK (polyether ketone ketone) and the like.

[0096] The second embodiment of the present application proposes a cooking container, which is based on the first embodiment and further has the following features:

[0097] The water absorption rate of the ceramic body 104 is less than or equal to 0.1%. Specifically, the water absorption rate of the above-mentioned ceramic body 104 is less than or equal to 0.1%, thereby making the water absorption rate of the ceramic body 104 extremely low, and making the ceramic body 104 can be directly in contact with the liquid without the need for protection by the glaze layer.

[0098] Therefore, in the cooking container 100 proposed by the present application, the water absorption rate of the ceramic body 104 is less than or equal to 0.1%, which can directly cancel the glaze layer arranged between the ceramic body and the heating layer in the related art.

[0099] In addition, the water absorption rate of the ceramic body 104 is less than or equal to 0.1%, which can ensure that the functional layer 108 of the cooking container 100 does not fall off due to the continuous water absorption of the ceramic body 104 during a long-time rice cooking process, thereby ensuring the service life of the entire cooking container 100. Moreover, the water absorption rate of the ceramic body 104 is less than or equal to 0.1%, which improves the flatness of the adhesion of the functional layer 108 and the heating layer 106 on the ceramic body 104, reduces the generation of cracks on the functional layer 108 and the heating layer 106, and improves the service life of the functional layer 108 and the heating layer 106 and the uniformity of the heating of the heating layer 106.

[0100] It should be noted that the test method of the water absorption rate of the ceramic body 104 is as follows: a sample with an area of 10 cm 2 is taken from the ceramic body 104 (when sampling, one sample is taken from the bottom of the ceramic body 104, and two samples are taken from the side of the ceramic body 104, and the above samples are not polished), the sample is dried to a constant weight G (i.e. the difference between the two consecutive weights every 12 h is less than 0.1% to be considered as constant weight) in an oven at 110℃±5℃, and then cooled to room temperature, then the sample is heated in a heater (the samples are not in contact with each other, and the water surface should be higher than the sample by 5 cm during the entire test process), the water is heated to boiling and kept boiling for 2 h, then the heat source is cut off, the sample is completely soaked in water and cooled to room temperature for 4 h±15 min, then the sample is taken out and measured for weight G1 after being vertically dripped with water, and the water absorption rate of the ceramic body 104 is ((G1-G) / G)×100%.

[0101] The three embodiments of the present application propose a cooking container, which is further based on the first and second embodiments:

[0102] In the present application, the ceramic body 104 adopts a heat-resistant lithia system ceramic. The ceramic body 104 mainly includes Al2O3, SiO2 and Li2O. In this way, on the one hand, the manufacturing process and overall structure of the cooking container 100 are simplified, and on the other hand, the roughness of the inner wall of the ceramic body 104 is ensured, so that the ceramic body 104 and the heating layer 106 have good bonding force.

[0103] In this way, the present application can directly set the heating layer 106 on the ceramic body 104 and ensure the close connection between the heating layer 106 and the ceramic body 104.

[0104] In this embodiment, further, the weight percentage of Al2O3 is greater than 22% and less than or equal to 30%. In this way, by the above setting of Al2O3, the ceramic body 104 has high strength and hardness, small high-frequency dielectric loss, high high-temperature insulation resistance, good chemical corrosion resistance and thermal conductivity.

[0105] In this embodiment, further, the weight percentage of SiO2 is greater than 66% and less than or equal to 70%. In this way, the silicon oxide enhances the melting temperature of the ceramic body 104, increases the melting temperature range, increases the high-temperature viscosity of the ceramic body 104, reduces the thermal expansion coefficient, and increases the hardness. Thus, the deformation resistance of the cooking container 100 is improved in a high-temperature environment, and the service life of the cooking container 100 is prolonged.

[0106] In this embodiment, further, the weight percentage of Li2O is greater than 2% and less than or equal to 5%. In this way, the ceramic body 104 has good fluxing energy. Thus, the heat transfer efficiency of the cooking container 100 after heating by the heating layer 106 is improved, and the cooking efficiency is improved.

[0107] In this embodiment, further, the ceramic body 104 also includes zinc oxide, iron oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, titanium oxide, etc., which will not be discussed here.

[0108] Therefore, the present application optimizes the raw material proportions of Al2O3, SiO2 and Li2O in the ceramic body 104, ensures that the water absorption of the ceramic body 104 itself is reduced, improves the flatness of the functional layer 108 and the heating layer 106 attached to the ceramic body 104, reduces the generation of cracks on the functional layer 108 and the heating layer 106, and improves the service life of the functional layer 108 and the heating layer 106 and the uniformity of the heating layer 106.

[0109] In this embodiment, further, the sintering temperature of the ceramic body 104 is greater than or equal to 1000℃ and less than or equal to 1500℃. That is, in the process of manufacturing the ceramic body 104, the Al2O3, SiO2, Li2O and other materials are first mixed uniformly, and then sintered at a sintering temperature of 1000℃ to 1500℃, thereby obtaining a ceramic body 104 with low water absorption. Specifically, the sintering temperature of the ceramic body 104 can be 1300℃. Specifically, the sintering temperature of the ceramic body 104 can be 1300℃.

[0110] Further, the present application improves the raw material ratio of the ceramic body 104 and the sintering temperature, so that the ceramic body 104 obtained by sintering has a lower water absorption rate, and the ceramic body 104 does not need to be subjected to glaze immersion and sintering treatment, thereby improving the flatness of the functional layer 108 and the heating layer 106 attached to the ceramic body 104, reducing the generation of cracks on the functional layer 108 and the heating layer 106, and improving the service life of the functional layer 108 and the heating layer 106 and the uniformity of the heating of the heating layer 106.

[0111] Specifically, the ceramic body 104 in the cooking container 100 provided by the present application is made of a lithium spar system ceramic that is resistant to heat and mainly composed of Al2O3, SiO2 and Li2O. The weight percentage of Al2O3 is greater than 22% and less than or equal to 26%, the weight percentage of SiO2 is greater than 66% and less than or equal to 70%, and the weight percentage of Li2O is greater than 2% and less than or equal to 3%.

[0112] In addition, the system also includes zinc oxide, iron oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, titanium oxide, etc., which will not be discussed here. The ceramic under this system has a very low water absorption rate after high-temperature sintering at 1300℃, and its water absorption rate will not exceed 0.1% without the protection of a glaze layer.

[0113] The fourth embodiment of the present application provides a cooking container 100, which is further based on the first embodiment, the second embodiment and the third embodiment, and further comprises:

[0114] The heating layer 106 can be connected to at least a part of the ceramic body 104 by using a water sticking method. Specifically, in the preparation process, the heating layer 106 is directly attached to the ceramic body 104 after being soaked with water, and then the water is rolled away to make the heating layer 106 flat; and then the heating layer 106 is sintered on the ceramic body 104 by sintering. In particular, in the case where the water sticking method can be used, the part of the ceramic body 104 connected with the above-mentioned heating layer 106 is polished to reduce the roughness of the part.

[0115] The heating layer 106 can also be connected to at least a part of the ceramic body 104 by using a thermal spraying method. Specifically, in the preparation process, the raw material (such as silver or other metals) of the heating layer 106 is directly sprayed on the ceramic body 104 by using external tools. In particular, in the case where the thermal spraying method can be used, the part of the ceramic body 104 connected with the above-mentioned heating layer 106 does not need to be polished.

[0116] The fifth embodiment of the present application provides a cooking container 100, which is further based on the first embodiment, the second embodiment, the third embodiment and the fourth embodiment, and further comprises:

[0117] As shown in Figure 3 and Figure 4 , the heating layer 106 is arranged on the inner surface of the ceramic body 104. In this way, during the use of the cooking vessel 100, the heating layer 106 can be ensured to be closer to the food in the cooking vessel 100, and the ceramic body 104 can play a certain heat preservation role. In addition, during daily use, the ceramic body 104 can also play a certain protection role on the heating layer 106 and the functional layer 108, avoiding damage to the heating layer 106 and the functional layer 108.

[0118] In this embodiment, further, as shown in Figure 3 and Figure 4 , the heating layer 106 is in contact with the ceramic body 104. That is, the surface of the part of the ceramic body 104 connected with the heating layer 106 is also not subjected to glaze dipping and sintering treatment, and there is no glaze layer on the surface of this part of the ceramic body 104. In this way, there is no glaze layer on the part of the ceramic body 104 directly connected with the heating layer 106, which ensures the roughness of the surface of this part of the ceramic body 104, so that the heating layer 106 can be directly connected to the ceramic body 104, and the bonding force between the ceramic body 104 and the heating layer 106 is ensured, the manufacturing process of the entire cooking vessel 100 is simplified, and the production efficiency of the cooking vessel 100 is improved, and the cost of the cooking vessel 100 is reduced.

[0119] The sixth embodiment of the present application proposes a cooking vessel 100, which is further based on the first embodiment, the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment:

[0120] The roughness of the part of the ceramic body 104 connected with the heating layer 106 is less than or equal to the roughness of the part of the ceramic body 104 connected with the functional layer 108. In this way, the flatness of the surface of the heating layer 106 can be improved, the formation of wrinkles can be reduced, and the heating efficiency can be improved (especially for the heating layer 106 formed by the film pasting process). In addition, the flow leveling during the implementation of the functional layer 108 can be improved, and the uniformity of the thickness of the functional layer 108 can be improved.

[0121] Further, the bonding strength between the functional layer 108 and the ceramic body 104 directly connected thereto can be improved; and the functional layer 108 connected through the heating layer 106, since the heating layer 106 can act as a transition layer, if there is no glaze in the heating layer 106, the bonding strength of the functional layer 108 and the ceramic body 104 at this place is improved, thereby improving the overall anti-peeling performance of the functional layer 108.

[0122] The seventh embodiment of the present application provides a cooking container 100, which is further based on the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment and the sixth embodiment, and has the following features:

[0123] The flatness of the surface of the part of the functional layer 108 connected with the heating layer 106 is less than or equal to the flatness of the surface of the part of the functional layer 108 connected with the ceramic base body 104.

[0124] During the use of the cooking container 100, the heating layer 106 can release heat to heat food, and part of the heat needs to be conducted to the position where the food is located through the functional layer 108. Therefore, in the cooking container 100 provided by the present application, the flatness of the surface of the part of the functional layer 108 connected with the heating layer 106 is less than or equal to the flatness of the surface of the part of the functional layer 108 connected with the ceramic base body 104, which improves the uniformity of heat transfer between the heating layer 106 and the functional layer 108, so that the heat is quickly and uniformly transferred to the inside of the ceramic base body 104. Correspondingly, the heat is also prevented from accumulating in the functional layer 108, thereby reducing the risk of the functional layer 108 falling off due to thermal stress.

[0125] In addition, the flatness of the surface of the part of the functional layer 108 connected with the ceramic base body 104 is relatively high, especially when the part is located at the upper part of the ceramic base body 104. Heat is usually transferred by heat radiation, and the relatively high flatness of the part is conducive to the absorption of heat radiation energy and promotes the transfer of heat at the part. Thus, the uniformity of heat of the ceramic base body 104 is promoted.

[0126] The eighth embodiment of the present application provides a cooking container 100, which is further based on the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment and the seventh embodiment, and has the following features:

[0127] The roughness of the connection interface between the functional layer 108 and the heating layer 106 is less than or equal to the roughness of the connection interface between the functional layer 108 and the ceramic base body 104.

[0128] In this way, the heat transfer between the functional layer 108 and the heating layer 106 is promoted, the accumulation of heat between the connection interface of the functional layer 108 and the heating layer 106 is reduced, the bonding force between the functional layer 108 and the heating layer 106 is improved, and the risk of the functional layer 108 falling off from the heating layer 106 is reduced.

[0129] The ninth embodiment of the present application provides a cooking container 100, which is further based on the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, the seventh embodiment and the eighth embodiment, and has the following features:

[0130] The heat generating layer 106 is connected to at least part of the ceramic base body 104 by thermal spraying, and the roughness of the connecting interface between the heat generating layer 106 and the ceramic base body 104 is greater than or equal to the roughness of the connecting interface between the functional layer 108 and the ceramic base body 104.

[0131] In this way, the bonding force between the heat generating layer 106 and the ceramic base body 104 can be improved, and the porosity of the heat generating layer 106 formed by thermal spraying is high, so that the generated heat can be easily dispersed and transferred, and the heat generation uniformity is high. The present application sets the roughness of the connecting interface between the heat generating layer 106 and the ceramic base body 104 to be high, which can increase the contact area between the heat generating layer 106 and the ceramic base body 104, promote the heat transfer to the ceramic base body 104 side, reduce the temperature difference between the ceramic base body 104 and the non-stick coating, and improve the bonding force between the non-stick coating and the ceramic base body 104.

[0132] The tenth embodiment of the present application proposes a cooking container 100, which is further based on the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, the seventh embodiment, the eighth embodiment and the ninth embodiment.

[0133] The roughness of the connecting interface between the heat generating layer 106 and the ceramic base body 104 is greater than or equal to the roughness of the connecting interface between the heat generating layer 106 and the functional layer 108. In this way, the surface of the part of the heat generating layer 106 connected to the functional layer 108 is a rough surface, which further improves the bonding force between the functional layer 108 and the heat generating layer 106, and increases the contact area between the functional layer 108 and the heat generating layer 106, reduces the heat accumulation in the functional layer 108, and improves the bonding force between the functional layer 108 and the heat generating layer 106. In addition, the surface of the ceramic base body 104 connected to the heat generating layer 106 is also a rough surface.

[0134] Further, the roughness of the connecting interface between the heat generating layer 106 and the ceramic base body 104 is greater than or equal to the roughness of the connecting interface between the heat generating layer 106 and the functional layer 108. In this way, since the thickness of the ceramic base body 104 is high and the thermal conductivity is low, the roughness of the connecting interface between the heat generating layer 106 and the ceramic base body 104 is set to be large, which can improve the uniformity of heat transfer to the ceramic base body 104, reduce the heat accumulation in the ceramic base body 104, and improve the cold and hot impact resistance of the ceramic base body 104.

[0135] The eleventh embodiment of the present application proposes a cooking container 100, which is further based on the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, the seventh embodiment, the eighth embodiment, the ninth embodiment and the tenth embodiment.

[0136] The heating layer 106 is arranged in sections. Specifically, the heating layer 106 includes a first heating film (not shown in the figure) and a second heating film (not shown in the figure), and the second heating film is arranged on at least part of the peripheral edge of the first heating film, and the first heating film and the second heating film have a gap therebetween. In this way, for the heating layer 106, the functional layer 108 opposite the gap will be directly connected to the ceramic blank 104, and the thickness of the functional layer 108 opposite the gap is larger, at which time the bonding force between the functional layer 108 and the ceramic blank 104 is higher, forming a pulling force on the surrounding functional layer 108, reducing the peeling of the part of the functional layer 108 connected to the heating layer 106.

[0137] Further, the gap ensures that the first heating film and the second heating film do not overlap, and the position of the gap does not have a heating area, but will have heat conducted by the first heating film and the second heating film when heated, thereby making the gap also have heat, but the temperature of the heat obtained by the heat conduction path will be lower than the temperature of the first heating film and the second heating film.

[0138] In this way, through the design of the first heating film and the second heating film described above, a certain temperature difference can be formed on the cooking container 100, so that the heating capacity of the position provided with the first heating film and the second heating film is higher than the heating capacity of the intermediate gap. In this way, the part of the liquid heated by the first heating film and the second heating film is more likely to boil, and the part of the liquid heated by the area corresponding to the gap is relatively not easy to boil.

[0139] In this way, during the use of the cooking container 100, the part of the liquid heated by the first heating film and the second heating film and the liquid heated by the gap can form a convection effect, and the part of the liquid heated by the first heating film and the second heating film is first in a boiling state, and the liquid in the first boiling state is constantly disturbed in the cooking container 100, on the one hand, improving the heating effect and heating uniformity of all the liquid in the cooking container 100, on the other hand, the boiling effect during the heating of the liquid can be improved, so that the visual effect of the cooking container 100 during use is greatly improved.

[0140] In addition, good boiling effect is conducive to further improving the cooking effect and cooking taste of food. For example, during the process of the user using the cooking container 100 to cook soup, the constantly boiling soup will speed up the impact and collision between the food and the soup in the cooking container 100, so that the cooked soup food is more flavorful.

[0141] In this embodiment, further, the part of the functional layer 108 corresponding to the interval is in contact with the ceramic body 104, and the ceramic body 104 at this position is not subjected to the glaze dipping sintering process, and the surface of the ceramic body at this position does not have a glaze layer. In this way, the bonding strength between the functional layer 108 and the ceramic body 104 at this position can be ensured, and the two are firmly connected together.

[0142] In this embodiment, further, when the heat generating layer 106 is arranged on the inner surface of the ceramic body 104, the heat generated by the heat generating layer 106 is directly transmitted to the food, and the heating power is high. Therefore, if the interval size is small, the food in the ceramic body 104 is more easily heated by the heat generated by the heat generating layers 106 on both sides, and the existence of temperature difference in the food is reduced, and the effect of boiling is reduced. If the interval size is large, due to the high heating power, the heat transmission in the interval part is slow, and it is easy to cause the risk of rupture of the pot body due to heat concentration in the interval part. Moreover, if the interval size is too large, when the heat generating layer 106 is processed by the film pasting method, it is easy to cause the phenomenon of unevenness of the heat generating layer 106, and reduce the uniformity of the heat generation of the heat generating layer 106.

[0143] Therefore, the interval size of the present application is greater than or equal to 2 mm and less than or equal to 15 mm, which ensures the heating efficiency of the bottom, and can generate a temperature difference to achieve the boiling effect of boiling, and improve the uniformity of the heat generation of the heat generating layer 106, and reduce the possibility of rupture of the ceramic body 104.

[0144] On the basis of the first to eleventh embodiments, further, the heat generating layer 106 comprises a metal layer, and at least part of the functional layer 108 is directly connected to the metal layer; and the metal layer comprises a magnetosensitive metal material. Specifically, under the action of the electromagnetic field, the metal layer will cut the alternating magnetic induction lines to generate eddy current, and the eddy current will make the molecules in the metal layer move at a very high speed in a random manner, and the molecules will collide and rub to generate heat energy, so that the cooking container 100 is heated at a high speed, and then the food is heated and cooked, so as to achieve the purpose of cooking.

[0145] Specifically, the relative magnetic permeability of the magnetosensitive metal material is less than 10; preferably, the relative magnetic permeability of the magnetosensitive metal material is less than 1.

[0146] Further, the metal layer can be directly connected to the ceramic body 104. In particular, since the ceramic body 104 has a low water absorption rate, and the cooking container 100 proposed by the present application does not need to arrange a glaze layer on the surface of the ceramic body 104. Therefore, the above-mentioned metal layer can be directly connected to the ceramic body 104, and then the manufacturing process and the overall structure of the cooking container 100 are simplified.

[0147] Further, the heating layer 106 can further include a metal layer and a first glaze layer. In this way, the metal layer is connected to the ceramic base 104 through the first glaze layer. In particular, since the ceramic base 104 has a low water absorption rate, and the cooking container 100 according to the present application does not need to be provided with a glaze layer on the surface of the ceramic base 104. Therefore, the above-mentioned metal layer is connected to the ceramic base 104 through the first glaze layer, which can further improve the connection strength between the metal layer and the ceramic base 104.

[0148] Further, based on the first embodiment to the eleventh embodiment, the heating layer 106 includes inorganic glaze, and the heating layer 106 is connected to the functional layer 108 and the ceramic base 104 through the inorganic glaze. In this way, the connection strength between the heating layer 106 and the functional layer 108, and the connection strength between the heating layer 106 and the ceramic base 104 can be further improved. Specifically, the inorganic glaze includes components such as aluminum oxide, silicon oxide, lithium oxide, and other components such as iron oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, titanium oxide, etc.

[0149] Further, based on the first embodiment to the eleventh embodiment, as shown in Figure 3 and Figure 4 , the cooking container 100 further includes a second glaze layer 110. The second glaze layer 110 is arranged on the outer wall of the ceramic base 104, thereby improving the smoothness of the surface of the outer wall of the ceramic base 104. In addition, the design of the above-mentioned second glaze layer 110 can further protect the ceramic base 104 to some extent, thereby ensuring that the outer side of the cooking container 100 has high hardness, wear resistance and other characteristics. Specifically, the second glaze layer 110 is a high-temperature glaze layer.

[0150] Further, based on the first embodiment to the eleventh embodiment, as shown in Figure 3 and Figure 4 Figure 3 Figure 4 , the heating layer 106 is arranged on the bottom wall and the side wall of the ceramic base 104. Specifically, the ceramic base 104 includes a bottom wall and a side wall. The first heating film is arranged in the middle region of the bottom wall of the ceramic base 104, and the second heating film is arranged on at least part of the side edge (e.g., one side edge, two side edges, three side edges, four side edges, etc.) of the first heating film. In addition, the part of the side wall of the heating layer 106 has a height ratio less than or equal to 1 / 3 with respect to the side wall.

[0151] The twelfth embodiment of the present application provides a cooking appliance (not shown in the figure), which includes the cooking container 100 according to any one of the above-mentioned embodiments, and a heating platform.

[0152] Therefore, the cooking appliance has all the beneficial effects of the cooking container 100 according to any one of the above-mentioned embodiments, which will not be repeated here.

[0153] In addition, the cooking appliance further comprises a heating platform, wherein the heating platform comprises a heating area, and the cooking container 100 can be placed on the heating area, so that the cooking appliance cooperates with the cooking container 100 to jointly heat food.

[0154] In this embodiment, further, the heating area is an electromagnetic heating area, and specifically, the electromagnetic heating area is provided with a disc-shaped pipeline, wherein the distance between the coils in the middle of the bottom is large, and the distance between the coils around the middle of the bottom is small. The cooking container 100 is placed above the electromagnetic heating area, and the cooking container 100 provided with the heating layer 106 cuts the alternating magnetic induction lines to generate eddy currents. The eddy currents make the molecules in the conductor layer move at a very high speed in a random manner, and the molecules collide and rub with each other to generate heat energy, so that the cooking container 100 heats at a high speed, and the food is heated and cooked, so as to achieve the purpose of cooking.

[0155] Specifically, in the cooking container 100, the ceramic body 104 is made of a lithium mica system ceramic resistant to heat. The ceramic body 104 of the system is mainly made of Al2O3, SiO2 and Li2O, wherein the weight percentage of Al2O3 is greater than 22% and less than or equal to 30%; the weight percentage of SiO2 is greater than 66% and less than or equal to 70%; and the weight percentage of Li2O is greater than 2% and less than or equal to 5% (specifically, the weight percentage of Al2O3 can be greater than 22% and less than or equal to 26%; the weight percentage of SiO2 can be greater than 66% and less than or equal to 70%; and the weight percentage of Li2O can be greater than 2% and less than or equal to 3%). The ceramic body 104 further comprises zinc oxide, iron oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide and titanium oxide.

[0156] After the ceramic body 104 in this system is sintered at a high temperature of 1300℃, the water absorption of the ceramic body 104 is extremely low, and the water absorption of the ceramic body 104 without the protection of the glaze layer is also not more than 0.1%. At this time, the second glaze layer 110 is on the outer wall of the ceramic body 104, and the inner wall of the ceramic body 104 is not glazed. The inner wall of the ceramic body 104 is rough, and can be used for bonding of the functional layer 108, so as to greatly improve the bonding force of the functional layer 108 and improve the non-stickiness of the ceramic body 104. In addition, the heating layer 106 is designed inside the ceramic body 104 (such as an inner silver film or an inner magnetic guide layer), and the functional layer 108 is sprayed, so that heat is directly transmitted to the substance to be heated inside the ceramic body 104 through the functional layer 108, and the heat transfer efficiency of the cooking container 100 can be further improved.

[0157] Specifically, the ceramic body 104 has an ultra-low water absorption rate, and the water absorption rate of the ceramic body 104 without the protection of the glaze layer is not more than 0.1%. The second glaze layer 110 is provided on the outer side of the ceramic body 104, so that the outer side of the ceramic body 104 has the characteristics of high hardness, wear resistance and the like. The inner part of the ceramic body 104 is not protected by the glaze layer, and the heating layer 106 is directly arranged in the inner part of the ceramic body 104. The heating layer 106 can be a silver film arranged in the inner part by the water transfer printing method, or an aluminum layer sprayed by the thermal spraying method.

[0158] In actual use, the heating layer 106 generates heat under the action of the electromagnetic field and directly transmits the heat to the inside of the cooking container 100, and at this time, the ceramic body 104 can also play a role of heat insulation and heat preservation. The functional layer 108 (non-stick layer) is sprayed on the upper surface of the heating layer 106, the inner part of the ceramic body 104 is not protected by the glaze layer, and the surface is relatively rough, so that the bonding force of the functional layer 108 can be ensured, and the ultra-low water absorption rate of the ceramic body 104 can ensure that the functional layer 108 will not fall off due to continuous water absorption during a long-time rice cooking process, so that the service life of the entire cooking container 100 can be ensured. Therefore, the present application can not only ensure the heat transfer efficiency of the cooking container 100, but also solve the problem that the ceramic body 104 cannot be sprayed with the functional layer 108.

[0159] In the following, the cooking container 100 according to the present application is further explained and described by means of several specific embodiments. In the following specific embodiments, the sintering conditions are the same.

[0160] In the first specific embodiment, the water absorption rate of the ceramic body 104 is 0.03% (the proportion of Al2O3 in the ceramic body 104 is 25%, the proportion of SiO2 is 68%, and the proportion of LI2O is 2.6%, and the total content of the above three is 95.6%, and the sintering temperature is 1280°C), and the second glaze layer 110 is provided on the outer side of the ceramic body 104. The inner part of the ceramic body 104 is not protected by the glaze layer, and the heating layer 106 in the inner part of the ceramic body 104 is a silver film arranged in the inner part by the water transfer printing method. The functional layer 108 (the functional layer 108 can be PFA, PTFE or the like) is sprayed on the heating layer 106 and the position of the ceramic body 104 without the heating layer 106.

[0161] In this embodiment, the service life of the cooking container 100 is measured by the number of continuous rice cooking on the heating platform, and the 7-year service life corresponds to 2000 times of continuous rice cooking. The functional layer 108 of the cooking container 100 does not fall off after 2500 times of continuous rice cooking, which meets the design service life and exceeds the 7-year service life.

[0162] In the specific embodiment two, the water absorption of the ceramic body 104 is 0.6% (the proportion of Al2O3 in the ceramic body 104 is 19.8%, the proportion of SiO2 is 69.5%, the total content of the above two is 95.6%, and the sintering temperature is 1140°C), the ceramic body 104 has the second glaze layer 110 on the outside, and the ceramic body 104 has no glaze layer protection in the inside. The heating layer 106 in the inside of the ceramic body 104 is a silver film pasted in the water transfer printing mode. The functional layer 108 (the functional layer 108 can be PFA, PTFE, etc.) is sprayed on the heating layer 106 and the position of the ceramic body 104 without the heating layer 106.

[0163] In this embodiment, the service life of the cooking container 100 is measured by the number of continuous cooking on the heating platform, and the 7-year service life corresponds to 2000 times of continuous cooking. After 280 times of continuous cooking, the functional layer 108 of the cooking container 100 produces bubbles, which further causes the functional layer 108 to fall off, and the cooking container 100 cannot meet the design service life.

[0164] In the specific embodiment three, the water absorption of the ceramic body 104 is 0.05% (the proportion of Al2O3 in the ceramic body 104 is 25%, the proportion of SiO2 is 68%, the proportion of LI2O is 2.6%, the total content of the above three is 95.6%, and the sintering temperature is 1250°C), the ceramic body 104 has the second glaze layer 110 on the outside, and the ceramic body 104 has no glaze layer protection in the inside. The heating layer 106 in the inside of the ceramic body 104 is a silver film pasted in the water transfer printing mode. The functional layer 108 (the functional layer 108 can be PFA, PTFE, etc.) is sprayed on the heating layer 106 and the position of the ceramic body 104 without the heating layer 106.

[0165] In this embodiment, the service life of the cooking container 100 is measured by the number of continuous cooking on the heating platform, and the 7-year service life corresponds to 2000 times of continuous cooking. After 2000 times of continuous cooking, the non-stick coating of the cooking container 100 does not fall off, and meets the design service life.

[0166] In the comparative embodiment one, the water absorption of the ceramic body 104 is 0.05% (the proportion of Al2O3 in the ceramic body 104 is 25%, the proportion of SiO2 is 68%, the proportion of LI2O is 2.6%, the total content of the above three is 95.6%, and the sintering temperature is 1250°C), and the ceramic body 104 has the second glaze layer 110 on the inside and the outside. The heating layer 106 in the inside of the ceramic body 104 is a silver film pasted in the water transfer printing mode. The functional layer 108 (the functional layer 108 can be PFA, PTFE, etc.) is sprayed on the heating layer 106 and the position of the ceramic body 104 without the heating layer 106.

[0167] In this embodiment, the service life of the cooking container 100 is measured by the number of continuous cooking on the heating platform, and 7 years of service life corresponds to 2000 times of continuous cooking. After 2000 times of continuous cooking, the non-stick coating of the cooking container 100 does not fall off, and the design service life is met.

[0168] In this embodiment, the service life of the cooking container 100 is measured by the number of continuous cooking on the heating platform, and 7 years of service life corresponds to 2000 times of continuous cooking. After 2000 times of continuous cooking, the non-stick coating of the cooking container 100 does not fall off, and the design service life is met.

[0169] In this embodiment, the service life of the cooking container 100 is measured by the number of continuous cooking on the heating platform, and 7 years of service life corresponds to 2000 times of continuous cooking. After 2000 times of continuous cooking, the non-stick coating of the cooking container 100 does not fall off, and the design service life is met.

[0170] In this embodiment, the service life of the cooking container 100 is measured by the number of continuous cooking on the heating platform, and 7 years of service life corresponds to 2000 times of continuous cooking. After 2000 times of continuous cooking, the non-stick coating of the cooking container 100 does not fall off, and the design service life is met.

[0171] In this embodiment, the service life of the cooking container 100 is measured by the number of continuous cooking on the heating platform, and 7 years of service life corresponds to 2000 times of continuous cooking. After 2000 times of continuous cooking, the non-stick coating of the cooking container 100 does not fall off, and the design service life is met.

[0172] In the description of the present application, the term "a plurality of" refers to two or more, unless otherwise explicitly limited, and the terms "upper", "lower", etc. indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application; the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral connection; 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 present application can be understood according to the specific circumstances.

[0173] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "certain embodiments", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner.

[0174] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cooking vessel, characterized by, The cooking container comprises: a ceramic body; a heating layer arranged on at least a portion of the ceramic body; a functional layer arranged on the heating layer and at least a portion of the ceramic body, wherein a portion of the functional layer arranged on the ceramic body is in contact with the ceramic body, and the functional layer is a non-stick layer; a surface of a portion of the ceramic body connected with the functional layer is not subjected to glaze immersion sintering treatment; a flatness of a surface of a portion of the functional layer connected with the heating layer is less than or equal to a flatness of a surface of a portion of the functional layer connected with the ceramic body; or a roughness of a connecting interface between the functional layer and the heating layer is less than or equal to a roughness of a connecting interface between the functional layer and the ceramic body; or a roughness of a connecting interface between the heating layer and the ceramic body is greater than or equal to a roughness of a connecting interface between the heating layer and the functional layer; or a roughness of a portion of the ceramic body connected with the heating layer is less than or equal to a roughness of a portion of the ceramic body connected with the functional layer; a water absorption of the ceramic body is less than or equal to 0.1%; the heating layer comprises a metal layer, and at least a portion of the functional layer is connected to the metal layer, wherein the metal layer comprises a magnetic sensitive metal material; the heating layer further comprises a first glaze layer, and the metal layer is connected to the ceramic body through the first glaze layer; or the heating layer comprises inorganic glaze, and the heating layer is connected to the functional layer and the ceramic body through the inorganic glaze.

2. The cooking container according to claim 1, wherein: the ceramic body comprises at least Al2O3, SiO2 and Li2O; a weight percentage of the Al2O3 is greater than 22% and less than or equal to 30%, a weight percentage of the SiO2 is greater than 66% and less than or equal to 70%, and a weight percentage of the Li2O is greater than 2% and less than or equal to 5%.

3. The cooking container according to claim 1 or 2, wherein: the heating layer is arranged on an inner surface of the ceramic body.

4. The cooking container according to claim 1 or 2, wherein: a sintering temperature of the ceramic body is greater than or equal to 1000°C and less than or equal to 1500°C.

5. The cooking container according to claim 1 or 2, wherein: a roughness of a connecting interface between the heating layer and the ceramic body is greater than or equal to a roughness of a connecting interface between the functional layer and the ceramic body; the heating layer is connected to at least a portion of the ceramic body by a thermal spraying method.

6. The cooking vessel of claim 1 or 2, wherein, the heating layer comprises: a first heating film arranged in a middle region of a bottom wall of the ceramic body; a second heating film arranged on at least a portion of a peripheral edge of the first heating film; a space is provided between the first heating film and the second heating film.

7. The cooking container according to claim 6, wherein: a portion of the functional layer corresponding to the space is in contact with the ceramic body; and / or The size of the interval is greater than or equal to 2 mm and less than or equal to 15 mm from the middle area of the bottom wall of the ceramic body to the edge.

8. The cooking vessel of claim 1 or 2, wherein, Also included are: A second glaze layer, at least a portion of which is disposed on the outer wall of the ceramic body; The sintering temperature of the second glaze layer is higher than the melting temperature of the heat-generating layer.

9. The cooking container of claim 8, wherein, At least a portion of the second glaze layer is located on the inner wall of the ceramic body and is connected to the functional layer.

10. A cooking appliance characterized by, Included are: A heating platform, the heating platform including a heating area; The cooking container of any one of claims 1 to 9 can be placed on the heating area.

11. The cooking appliance of claim 10, wherein, The heating area is an electromagnetic heating area.

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