Cooking inner container, cooking electric appliance, cooking method and storage medium

Abstract

The embodiment of the invention provides a cooking inner container, a cooking electric appliance, a cooking method and a storage medium. The cooking inner container comprises an inner container body, a first electrode assembly and a second electrode assembly. The inner container is provided with a cooking cavity and an opening communicated with the cooking cavity, and the opening is located in the top of the cooking cavity in the height direction; the cooking cavity comprises a first area and a second area which are arranged in the height direction, and the second area is located on the side, away from the opening, of the first area; the first electrode assembly is arranged in the first area, and the first electrode assembly is used for forming a first electric field in the inner container; the second electrode assembly is arranged in the second area and used for forming a second electric field in the inner container. According to the cooking inner container, food in the cooking inner container can be well, evenly and three-dimensionally heated through the electric field.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and particularly to a cooking inner pot, a cooking appliance, a cooking method and a storage medium. Background Art

[0002] In related technologies, some cooking appliances such as rice cookers and pressure cookers use ohmic heating or pulsed electric fields to heat food. Both ohmic heating and pulsed electric fields use the electric fields formed by electrodes to process food.

[0003] In general, cooking appliances in related technologies are provided with two parallel electrodes as positive and negative electrodes in the inner pot. However, the food accommodated in the inner pot generally includes liquid and solid ingredients. Due to the action of gravity, the solid ingredients are concentrated in the bottom area of the inner pot, and the pure liquid ingredients are located above the bottom area of the inner pot, which is called the top area. Since the conductivity of the solid-liquid mixture at the bottom is lower than that of the pure liquid environment at the top, there is a conductivity difference between the ingredients to be cooked in the bottom area and the top area. Such electrodes may cause the top area of the inner pot to boil earlier than the bottom area, resulting in uneven three-dimensional heating in the cooking cavity, thereby making the heating effect of the ingredients poor. Summary of the Invention

[0004] In view of this, embodiments of the present application are expected to provide a cooking inner pot, a cooking appliance, a cooking method and a storage medium that can better uniformly heat cooking ingredients.

[0005] To achieve the above object, an embodiment of the present application provides a cooking inner pot, including:

[0006] An inner pot, the inner pot has a cooking cavity and an opening communicating with the cooking cavity, and the opening is located at the top of the cooking cavity in the height direction; the cooking cavity includes a first area and a second area arranged in the height direction, the opening is located on one side of the first area, and the second area is located on the other side of the first area far from the opening;

[0007] A first electrode assembly for forming a first electric field in the first area of the cooking cavity;

[0008] A second electrode assembly for forming a second electric field in the second area of the cooking cavity.

[0009] Specifically, in one embodiment, a cooking inner pot for carrying cooking ingredients is placed in a cooking appliance. The cooking ingredients in the first region and the second region in the cooking cavity are at least partially different, and the cooking ingredients include at least one of solid state or liquid state. Wherein, the cooking appliance energizes the cooking inner pot, and the electrical parameters of the first electric field and the second electric field corresponding to at least one energization moment during the cooking process are different. The electrical parameters of the first electric field and the second electric field include at least one of electric field strength, electric potential value, capacitance value, electric displacement vector, conductivity, and current value.

[0010] In one embodiment, the first electrode assembly includes a first electrode and a second electrode, and the first electrode and the second electrode are respectively arranged on opposite sides of the first region; the second electrode assembly includes a third electrode and a fourth electrode, and the third electrode and the fourth electrode are respectively arranged on opposite sides of the second region.

[0011] In one embodiment, the first electrode and the third electrode are located on one side of the cooking cavity arranged along the height direction, and the second electrode and the fourth electrode are located on the other side of the cooking cavity arranged along the height direction. Among them, the first electrode and the second electrode are arranged opposite to each other, and the third electrode and the fourth electrode are arranged opposite to each other.

[0012] In one embodiment, the minimum distance between the first electrode and the third electrode is less than the minimum distance between the first electrode and the fourth electrode, and the minimum distance between the first electrode and the second electrode is less than the minimum distance between the first electrode and the fourth electrode.

[0013] In one embodiment, the absolute value of the voltage difference between the first electrode and the third electrode is not greater than 10% of the absolute value of the voltage of the first electrode or the third electrode; and / or,

[0014] The absolute value of the voltage difference between the second electrode and the fourth electrode is not greater than 10% of the absolute value of the voltage of the second electrode or the fourth electrode.

[0015] In one embodiment, the electric field strength between the first electrode and the second electrode satisfies: |E1 - E2| / d1 ≥ 10V / cm, where E1 is the voltage of the first electrode, E2 is the voltage of the second electrode, and d1 is the minimum distance between the first electrode and the second electrode; and / or,

[0016] The electric field strength between the third electrode and the fourth electrode satisfies: |E3 - E4| / d2 ≥ 10V / cm, E3 is the voltage of the third electrode, E4 is the voltage of the fourth electrode, and d2 is the minimum distance between the third electrode and the fourth electrode.

[0017] In one embodiment, the number of the first electrode assemblies is multiple, and the multiple first electrode assemblies are arranged in sequence along the height direction; and / or,

[0018] The number of the second electrode assemblies is plural, and the plural second electrode assemblies are arranged in sequence along the height direction.

[0019] In one implementation, the number of electrodes of the second electrode assembly is not less than that of the first electrode assembly.

[0020] In one implementation, the first electrode assembly and / or the second electrode assembly are fixedly connected to the inner container; and / or

[0021] The inner side wall of the inner container has a mounting groove, the mounting groove communicates with the cooking cavity, and at least part of the structure of the first electrode assembly and / or at least part of the structure of the second electrode assembly are snap-connected to the mounting groove.

[0022] In one implementation, the first electrode assembly and the second electrode assembly are connected to a power supply, an insulating structure is provided between the first electrode assembly and / or the second electrode assembly and the inner container, or the inner container includes an insulating member, and the first electrode assembly and / or the second electrode assembly are arranged on the insulating member.

[0023] In one implementation, the first electrode assembly includes a first electrode and a second electrode, the first electrode and the second electrode are in a ring structure or a spiral structure, and / or the second electrode assembly includes a third electrode and a fourth electrode, the third electrode and the fourth electrode are in a ring structure or a spiral structure.

[0024] In one implementation, the first electrode assembly and / or the second electrode assembly are detachably connected to the inner container, wherein the first electrode assembly and the second electrode assembly are integrally provided.

[0025] In one implementation, the second region includes the bottom and the side of the cooking cavity, and the second electrode assembly is arranged on the bottom and / or the side.

[0026] One embodiment of the present application provides a cooking appliance, including the above-mentioned cooking inner container. During the cooking process of the cooking appliance, the electrical parameters of the first electric field and the second electric field corresponding to at least one energization moment are different, and the electrical parameters of the first electric field and the second electric field include at least one of electric field strength, electric potential value, capacitance value, electric displacement vector, conductivity, and current value.

[0027] One embodiment of the present application provides a cooking method of a cooking appliance, which is used for the above-mentioned cooking appliance. The cooking method includes:

[0028] Controlling the energization duration of the first electrode assembly and the energization duration of the second electrode assembly, so that the time point when the second region reaches the boiling temperature is not later than the time point when the first region reaches the boiling temperature.

[0029] In one implementation, the cooking method includes:

[0030] Controlling the energization duration of the second electrode assembly to be not less than that of the first electrode assembly.

[0031] In one implementation, the cooking method includes:

[0032] In the heating-up stage, control the second electrode assembly to be powered on so as to heat up the second area;

[0033] Determine that the temperature in the second area reaches the set value of the target temperature;

[0034] Control the first electrode assembly to be powered on so as to heat up the first area; wherein, the set value is less than the target temperature.

[0035] In one implementation, the set value is 30% to 70% of the target temperature.

[0036] In one implementation, after controlling the first electrode assembly to be powered on, the cooking method includes:

[0037] Determine that the temperature in the cooking cavity reaches the target temperature, and control the cooking appliance to enter the temperature control stage.

[0038] In one implementation, the cooking method includes:

[0039] In the temperature control stage, control the energization duration of the second electrode assembly to be not less than that of the first electrode assembly.

[0040] In one implementation, the cooking method includes:

[0041] In the heating-up stage and / or the temperature control stage, determine that the temperature of the second area is lower than that of the first area;

[0042] Control the second electrode assembly to be powered on, and / or control the first electrode assembly to be powered off.

[0043] In one implementation, the cooking method includes:

[0044] In the heating-up stage and / or the temperature control stage, determine that the temperature of the second area is not lower than that of the first area, and control the second electrode assembly and the first electrode assembly to be powered on or off simultaneously.

[0045] An embodiment of the present application provides a storage medium storing computer-executable instructions that can be executed by a processor to implement the steps of the above cooking method.

[0046] The embodiments of the present application provide a cooking inner container, a cooking appliance, a cooking method and a storage medium. The cooking cavity of the embodiments of the present application includes a first region and a second region arranged in the height direction. The second region is located on the side of the first region away from the opening. The first electric field formed by the first electrode assembly is located in the first region, and the second electric field formed by the second electrode assembly is located in the second region. By controlling the energization duration of the first electrode assembly and the energization duration of the second electrode assembly, the time point when the second region reaches the boiling temperature can be made not later than the time point when the first region reaches the boiling temperature. Therefore, by using the cooking inner container of the embodiments of the present application, the food materials in the cooking inner container can be better uniformly and three-dimensionally heated in the height direction. Description of the Drawings

[0047] Figure 1 It is a schematic structural diagram of the first cooking inner container of the embodiments of the present application;

[0048] Figure 2 is Figure 1 A schematic structural diagram of the cooking inner container shown from another angle;

[0049] Figure 3 is Figure 1 A schematic structural diagram of the cooking inner container shown from yet another angle;

[0050] Figure 4 It is a schematic structural diagram of the second cooking inner container of the embodiments of the present application;

[0051] Figure 5 is Figure 4 A schematic structural diagram of the cooking inner container shown from another angle;

[0052] Figure 6 is Figure 4 A schematic structural diagram of the cooking inner container shown from yet another angle;

[0053] Figure 7 It is a schematic structural diagram of the third cooking inner container of the embodiments of the present application;

[0054] Figure 8 is Figure 7 A schematic structural diagram of the cooking inner container shown from another angle.

[0055] Figure 9 It is a flowchart of the cooking method of a cooking appliance according to the embodiments of the present application.

[0056] Description of the Reference Numerals:

[0057] 10. Inner container; 10a. Cooking cavity; 10a1. First region; 10a2. Second region; 10b. Opening; 20. First electrode assembly; 21. First electrode; 22. Second electrode; 30. Second electrode assembly; 31. Third electrode; 32. Fourth electrode. Detailed implementation manners

[0058] In the description of the embodiments of the present application, it should be noted that the term "height direction" is based on the Figure 1 orientation or positional relationship shown. These orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0059] The embodiments of the present application provide a cooking inner container. Please refer to Figures 1 to 8 . The cooking inner container includes an inner container 10, a first electrode assembly 20, and a second electrode assembly 30.

[0060] The inner container 10 has a cooking cavity 10a and an opening 10b communicating with the cooking cavity 10a. The opening 10b is located at the top of the cooking cavity 10a in the height direction; the cooking cavity 10a includes a first region 10a1 and a second region 10a2 arranged in the height direction. The opening 10b is located on one side of the first region 10a1, and the second region 10a2 is located on the other side of the first region 10a1 far from the opening 10b.

[0061] The cooking cavity 10a is used to accommodate cooking ingredients, and the opening 10b is used to put the cooking ingredients into the cooking cavity 10a. The opening 10b is located at the top of the cooking cavity 10a in the height direction, opposite to the direction of the gravity acting on the ingredients. Exemplarily, the ingredients are generally deposited at the bottom of the cooking cavity 10a in the height direction due to the influence of gravity. The opening is provided on the other side of the deposited ingredients. The first region 10a1 is relatively arranged on the same side as the opening 10b, and the second region 10a2 is relatively arranged on the other side of the opening 10b (the side where the ingredients are deposited).

[0062] The material of the inner container 10 is not limited. Exemplarily, the inner container 10 can be made of non-conductive materials such as glass and ceramics. In another embodiment, the inner container 10 can also be made of conductive materials such as metal. However, when the inner container 10 is made of a conductive material, since the first electrode assembly 20 and the second electrode assembly 30 are connected to the power supply, an insulating structure is provided between the first electrode assembly 20 and / or the second electrode assembly 30 and the inner container 10 to prevent the inner container 10 from being energized with the cooking ingredients, the first electrode assembly 20, and the second electrode assembly 30. The type of the insulating structure is not limited. Exemplarily, the insulating structure can be an insulating coating on the surface of the inner container 10.

[0063] In another embodiment, the inner container 10 may include an insulating member, and the first electrode assembly 20 and / or the second electrode assembly 30 are disposed on the insulating member. That is to say, the first electrode assembly 20 and the second electrode assembly 30 may be disposed on the inner container 10 through the insulating member.

[0064] The first electrode assembly 20 is configured to form a first electric field within a first region 10a1 of the cooking cavity 10a. The second electrode assembly 30 is configured to form a second electric field within a second region 10a2 of the cooking cavity 10a. That is to say, the first electric field is located within the first region 10a1, and the second electric field is located within the second region 10a2. That is, the second electric field is located on the other side of the first electric field away from the opening 10b in the height direction. Generally, a heating assembly transfers heat to the cooking food within the cooking cavity 10a to achieve heating of the cooking food. However, the first electrode assembly 20 and the second electrode assembly 30 utilize the principle of electric heating to directly heat the cooking food by energizing the cooking food. That is to say, the cooking food is actually heated as a resistor. Specifically, since the cooking food usually has certain conductive properties and conductive media such as water are generally added to the cooking cavity 10a, after the first electrode assembly 20 is energized, when the cooking food comes into contact with the first electrode assembly 20, a current path can be formed between the cooking food and the first electrode assembly 20. After the second electrode assembly 30 is energized, when the cooking food comes into contact with the second electrode assembly 30, a current path can be formed between the cooking food and the second electrode assembly 30. When current flows through the cooking food, the cooking food, as a resistor, can generate heat by itself using its own conductive properties, thereby achieving the purpose of cooking and heating.

[0065] During cooking, at least part of the cooking food located in the first region 10a1 within the cooking cavity 10a is different from the cooking food located in the second region 10a2. The cooking food includes at least one of solid or liquid. That is to say, the cooking food located in the first region 10a1 includes one of solid and liquid, and the cooking food located in the second region 10a2 includes the other of solid and liquid. Or, the cooking food located in the first region 10a1 includes both solid and liquid, and the cooking food located in the second region 10a2 includes both solid and liquid. Or, the cooking food located in the first region 10a1 only includes liquid, and the cooking food located in the second region 10a2 includes both solid and liquid. Among them, the solid cooking food includes but is not limited to rice, miscellaneous grains, meat, etc., and the liquid cooking food includes but is not limited to water, etc.

[0066] The first electrode assembly 20 can heat the cooking food within the first region 10a1, and the second electrode assembly 30 can heat the cooking food within the second region 10a2, thereby achieving uniform three-dimensional heating of the cooking food in space.

[0067] It should be noted that there must be a conductive medium in the cooking cavity 10a to form a current path between the cooked food and the first electrode assembly 20 and / or the second electrode assembly 30. The conductive medium can be a liquid cooked food or a solid cooked food. The materials of the first electrode assembly 20 and the second electrode assembly 30 are not limited. Exemplarily, conductive materials such as titanium and stainless steel can be used.

[0068] The manner in which the first electrode assembly 20 and the second electrode assembly 30 are disposed in the inner container 10 is not limited. Exemplarily, the first electrode assembly 20 can be fixedly connected to the inner container 10 through fasteners such as screws, while the second electrode assembly 30 is disposed in the inner container 10 in other ways, or the second electrode assembly 30 is fixedly connected to the inner container 10, while the first electrode assembly 20 is disposed in the inner container 10 in other ways, or both the first electrode assembly 20 and the second electrode assembly 30 are fixedly connected to the inner container.

[0069] In another embodiment, the inner side wall of the inner container may have a mounting groove, the mounting groove communicates with the cooking cavity 10a, and at least part of the structure of the first electrode assembly and / or at least part of the structure of the second electrode assembly is snap-fitted with the mounting groove. That is to say, the first electrode assembly 20 and / or the second electrode assembly 30 is fixed on the inner container 10 by being snapped into the mounting groove, so as to facilitate the installation and disassembly of the first electrode assembly 20 and / or the second electrode assembly 30.

[0070] The embodiment of the present application also provides a cooking appliance, which includes the cooking inner container provided in any embodiment of the present application.

[0071] The cooking appliance in the embodiment of the present application mainly refers to a cooking appliance that can increase the temperature or pressure in the cooking cavity 10a. The cooking appliance includes but is not limited to a rice cooker, an electric pressure cooker, etc.

[0072] In one embodiment, the inner container 10 is placed inside the cooking appliance, and the cooking appliance electrically connects the inner container 10 to energize the first electrode assembly 20 and the second electrode assembly 30. During the cooking process when the cooking appliance is operating, the electrical parameters corresponding to the first electric field formed by the first electrode assembly 20 and the second electric field formed by the second electrode assembly 30 are different at at least one energization moment. Exemplarily, the electrical parameters of the first electric field and the second electric field include at least one of electric field strength, electric potential value, capacitance value, electric displacement vector, conductivity, and current value. Specifically, since the distribution of cooking ingredients in the cooking cavity 10a is uneven (solid cooking ingredients will concentrate at the bottom along the height direction due to the influence of gravity, i.e., the second region 10a2), and there is a large difference in the conductivity between solid cooking ingredients and liquid cooking ingredients, the electrical parameters corresponding to the first electric field and the second electric field will also have a large difference under the same energization voltage condition, which will cause the problem of uneven heating of the ingredients in the three-dimensional space. By dividing the space in the cooking cavity 10a of the inner container 10 into a first region 10a1 and a second region 10a2 along the height direction, different conductive scenarios of cooking ingredients are distinguished. The cooking appliance adjusts the power supply strategy for the first electrode assembly 20 and the second electrode assembly 30 or changes the specific settings of the electrode assemblies to overcome the limitation of uneven solid-liquid distribution caused by the influence of gravity on cooking ingredients, so as to relatively achieve uniform three-dimensional heating in the cooking cavity 10a of the inner container 10 and avoid poor taste or appearance caused by uneven heating of the ingredients up and down.

[0073] The embodiment of the present application also provides a cooking method, which is used for the cooking appliance described in any embodiment of the present application. Please refer to Figure 9 , and the cooking method includes the following steps:

[0074] Step S1: Control the energization duration of the first electrode assembly and the energization duration of the second electrode assembly so that the time point when the second region reaches the boiling temperature is not later than the time point when the first region reaches the boiling temperature.

[0075] The energization of the first electrode assembly 20 and the second electrode assembly 30 can be controlled separately. For example, the first electrode assembly 20 is energized while the second electrode assembly 30 is not energized, or both the first electrode assembly 20 and the second electrode assembly 30 can be energized.

[0076] By controlling the energization duration of the first electrode assembly 20 and the second electrode assembly 30, the heating time of the first region 10a1 and the second region 10a2 can be controlled so that the time point when the second region 10a2 reaches the boiling temperature is synchronized with the time point when the first region 10a1 reaches the boiling temperature, or the time point when the second region 10a2 reaches the boiling temperature is earlier than the time point when the first region 10a1 reaches the boiling temperature.

[0077] Taking cooking rice as an example, the rice is a solid cooking ingredient, and the water is a liquid cooking ingredient. After the rice and water are placed in the cooking cavity 10a, due to the influence of its own gravity, most of the rice will settle in the second area 10a2, while the first area 10a1 is mainly a liquid containing water. Generally speaking, the conductivity of the rice is weaker than that of the liquid. Therefore, the conductivity in the second area 10a2 is generally lower than that in the first area 10a1. This will cause the flow of current in the first area 10a1 and the second area 10a2 to be difficult to be consistent, which may lead to the problem of uneven temperature rise in the first area 10a1 and the second area 10a2, that is, the first area 10a1 may reach the boiling temperature earlier than the second area 10a2.

[0078] In the embodiment of the present application, the cooking cavity 10a is divided into a first area 10a1 and a second area 10a2 arranged along the height direction. The first area 10a1 is located on the side of the second area 10a2 far away from the opening 10b. The first electric field formed by the first electrode assembly 20 is located in the first area 10a1, and the second electric field formed by the second electrode assembly 30 is located in the second area 10a2. At the same time, by controlling the energization duration of the first electrode assembly 20 and the energization duration of the second electrode assembly 30, the time point when the second area 10a2 reaches the boiling temperature can be made not later than the time point when the first area 10a1 reaches the boiling temperature. Thus, the temperature rise of the first area 10a1 and the second area 10a2 can tend to be consistent. Therefore, by using the cooking inner container of the embodiment of the present application, the ingredients in the inner container can be heated evenly and three-dimensionally in the height direction, further avoiding the problem of uneven overall heating in the inner container space caused by the conductivity difference due to the uneven distribution of the ingredients under the influence of gravity in the inner container.

[0079] In one embodiment, please refer to Figure 2 、 Figure 3 、 Figure 5 and Figure 6 , the first electrode assembly 20 includes a first electrode 21 and a second electrode 22, and the first electrode 21 and the second electrode 22 can be respectively arranged on opposite sides of the cooking cavity 10a. The second electrode assembly 30 includes a third electrode 31 and a fourth electrode 32, and the third electrode 31 and the fourth electrode 32 are respectively arranged on opposite sides of the cooking cavity 10a.

[0080] That is to say, the electric field direction of the first electric field formed between the first electrode 21 and the second electrode 22 is perpendicular to the height direction, and the electric field direction of the second electric field formed between the third electrode 31 and the fourth electrode 32 is perpendicular to the height direction. Thus, it can be ensured that the first area 10a1 and the second area 10a2 have better temperature uniformity in the horizontal direction.

[0081] Please continue to refer to Figure 2 、 Figure 3 、Figure 5 and Figure 6 The first electrode 21 and the third electrode 31 may be located on one side of the cooking cavity 10a arranged in the height direction, and the second electrode 22 and the fourth electrode 32 are located on the other side of the cooking cavity 10a arranged in the height direction. Among them, the first electrode 21 and the second electrode 22 are arranged oppositely, and the third electrode 31 and the fourth electrode 32 are arranged oppositely. That is to say, the third electrode 31 is located below the first electrode 21 in the height direction, and the fourth electrode 32 is located below the second electrode 22 in the height direction.

[0082] Exemplarily, please refer to Figure 5 , the minimum distance between the first electrode 21 and the third electrode 31 may be less than the minimum distance between the first electrode 21 and the fourth electrode 32, and the minimum distance between the first electrode 21 and the second electrode 22 is less than the minimum distance between the first electrode 21 and the fourth electrode 32. That is to say, the third electrode 31 is closer to the first electrode 21 than the fourth electrode 32, and the fourth electrode 32 is closer to the second electrode 22 than the third electrode 31.

[0083] The minimum distance refers to the shortest straight-line distance between the outer surfaces of the two electrodes of the first electrode 21 and the third electrode 31, or the first electrode 21 and the fourth electrode 32. This distance can be measured by measuring instruments such as calipers and laser rangefinders.

[0084] By making the minimum distance between the first electrode 21 and the second electrode 22 less than the minimum distance between the first electrode 21 and the fourth electrode 32, the current can mainly flow between the first electrode 21 and the second electrode 22 and / or between the third electrode 31 and the fourth electrode 32, rather than flowing between the first electrode 21 and the fourth electrode 32 and / or between the second electrode 22 and the third electrode 31. Thus, the temperature uniformity of the first region 10a1 and the second region 10a2 in the horizontal direction can be ensured.

[0085] The number of electrodes of the first electrode assembly 20 is not limited. Exemplarily, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 , the number of electrodes of the first electrode assembly 20 can be one. That is to say, there is only one first electrode 21 and the corresponding second electrode 22 in the first region 10a1. In another embodiment, the number of electrodes of the first electrode assembly 20 can also be multiple. When the number of electrodes of the first electrode assembly 20 is multiple, multiple first electrode assemblies 20 can be arranged in sequence in the height direction. That is to say, multiple first electrodes 21 and the corresponding second electrodes 22 are arranged in the first region 10a1, and each first electric field is arranged in sequence in the height direction, so that the first region 10a1 has good temperature rise uniformity in the height direction.

[0086] The number of electrodes of the second electrode assembly 30 is not limited. Exemplarily, please refer to Figures 1 to 3 , the number of electrodes of the second electrode assembly 30 can be one, that is to say, there is only one third electrode 31 and the corresponding fourth electrode 32 in the second region 10a2. In another embodiment, please refer to Figures 4 to 6 , the number of electrodes of the second electrode assembly 30 can also be multiple, and the multiple second electrode assemblies 30 are arranged in sequence along the height direction, that is to say, a plurality of third electrodes 31 and the corresponding fourth electrodes 32 are arranged in the second region 10a2, and the second electric fields are arranged in sequence along the height direction, so that the second region 10a2 has good temperature rise uniformity in the height direction.

[0087] In one embodiment, the number of electrodes of the second electrode assembly 30 can be not less than the number of electrodes of the first electrode assembly 20.

[0088] Exemplarily, please refer to Figures 4 to 6 , when the number of electrodes of the first electrode assembly 20 is one, the number of electrodes of the second electrode assembly 30 can be one or two. When the number of electrodes of the first electrode assembly 20 is two, the number of electrodes of the second electrode assembly 30 can be two or three.

[0089] By making the number of electrodes of the second electrode assembly 30 not less than the number of electrodes of the first electrode assembly 20, when the conductivity in the second region 10a2 is lower than that in the first region 10a1, the heating power in the second region 10a2 can be ensured to be not less than the heating power in the first region 10a1 as much as possible, thereby realizing uniform temperature rise of the first region 10a1 and the second region 10a2.

[0090] Exemplarily, the absolute value of the voltage difference between the first electrode 21 and the third electrode 31 is not greater than 10% of the absolute value of the voltage of the first electrode 21 or the third electrode 31. Thus, it can be ensured that when the first electrode assembly 20 and the second electrode assembly 30 are energized, the current mainly flows between the first electrode 21 and the second electrode 22, rather than between the first electrode 21 and the third electrode 31, thereby promoting the temperature rise uniformity of the cooking food in the height direction.

[0091] Exemplarily, the absolute value of the voltage difference between the second electrode 22 and the fourth electrode 32 is not greater than 10% of the absolute value of the voltage of the second electrode 22 or the fourth electrode 32. Thus, it can be ensured that when the first electrode assembly 20 and the second electrode assembly 30 are energized, the current mainly flows between the second electrode 22 and the first electrode 21, rather than between the second electrode 22 and the fourth electrode 32, thereby promoting the temperature rise uniformity of the cooking food in the height direction.

[0092] Exemplarily, the electric field strength between the first electrode 21 and the second electrode 22 may satisfy: |E1 - E2| / d1 ≥ 10 V / cm, where E1 is the voltage of the first electrode 21, E2 is the voltage of the second electrode 22, and d1 is the minimum distance between the first electrode 21 and the second electrode 22. Thus, it can be ensured that the electric field strength formed by the first electrode assembly 20 meets the heating efficiency of the cooking foodstuff.

[0093] Among them, the voltage E1 of the first electrode 21 and the voltage E2 of the second electrode 22 can be measured by a voltmeter.

[0094] Exemplarily, the electric field strength between the third electrode 31 and the fourth electrode 32 may satisfy: |E3 - E4| / d2 ≥ 10 V / cm, where E3 is the voltage of the third electrode 31, E4 is the voltage of the fourth electrode 32, and d2 is the minimum distance between the third electrode 31 and the fourth electrode 32. Thus, it can be ensured that the electric field strength formed by the second electrode assembly 30 meets the heating efficiency of the cooking foodstuff.

[0095] In one embodiment, please refer to Figure 7 and Figure 8 , the first electrode assembly 20 includes a first electrode 21 and a second electrode 22. The first electrode 21 and the second electrode 22 may be in a ring structure. That is to say, both the first electrode 21 and the second electrode 22 surround the circumferential side of the first region 10a1 to heat the circumferential region of the cooking foodstuff. In another embodiment, the first electrode 21 and the second electrode 22 may also be in a spiral structure.

[0096] In one embodiment, please refer to Figure 7 and Figure 8 , the second electrode assembly 30 includes a third electrode 31 and a fourth electrode 32. The third electrode 31 and the fourth electrode 32 may be in a ring structure. That is to say, both the first electrode 21 and the second electrode 22 surround the circumferential side of the first region 10a1 to heat the circumferential region of the cooking foodstuff. In another embodiment, the third electrode 31 and the fourth electrode 32 may also be in a spiral structure.

[0097] Exemplarily, the first electrode assembly 20 and / or the second electrode assembly 30 may be detachably connected to the inner container 10. Among them, the first electrode assembly 20 and the second electrode assembly 30 are integrally provided. That is to say, the first electrode assembly 20 and the second electrode assembly 30 may be detachably connected to the inner container 10 as a whole. It may be that the first electrode assembly 20 is detachably connected to the inner container 10 while the second electrode assembly 30 is not connected to the inner container 10, or it may be that the second electrode assembly 30 is detachably connected to the inner container 10 while the first electrode assembly 20 is not connected to the inner container 10, or it may also be that both the first electrode assembly 20 and the second electrode assembly 30 are detachably connected to the inner container 10.

[0098] Exemplarily, the second region 10a2 includes the bottom and sides of the cooking cavity 10a. The second electrode assembly 30 can be disposed at the bottom, or at the sides, or at both the bottom and the sides simultaneously.

[0099] Please refer to Figure 8 , the second electrode assembly 30 is in a ring structure and can be distributed at the bottom and the sides to improve the temperature uniformity in the second region 10a2.

[0100] Please refer to Figure 6 and Figure 8 , when the second electrode assembly 30 is disposed at the bottom, the central region of the bottom should be avoided to prevent heat accumulation in the central region and resulting in the foodstuff at the bottom being burnt.

[0101] In one embodiment, the cooking method may include: controlling the energization duration of the second electrode assembly to be not less than that of the first electrode assembly.

[0102] That is to say, by controlling the energization duration of the second electrode assembly 30 to be greater than or equal to that of the first electrode assembly 20, the time point when the second region 10a2 reaches the boiling temperature can be no later than the time point when the first region 10a1 reaches the boiling temperature.

[0103] It should be noted that the temperatures of the first region 10a1 and the second region 10a2 refer to the temperatures of the cooking foodstuffs in the first region 10a1 and the second region 10a2.

[0104] Exemplarily, the cooking method includes: in the heating-up stage, controlling the second electrode assembly to be energized to heat up the second region; determining that the temperature in the second region reaches the set value of the target temperature; controlling the first electrode assembly to be energized to heat up the first region.

[0105] The heating-up stage refers to the stage in which the temperatures in the first region 10a1 and the second region 10a2 rise until the target temperature is reached.

[0106] In the heating-up stage, by energizing the second electrode assembly 30 first and then the first electrode assembly 20, the first region 10a1 and the second region 10a2 can reach the target temperature more synchronously.

[0107] The target temperature can be set according to the actual situation. Exemplarily, the target temperature can be the boiling temperature of the cooking foodstuff, or a temperature higher or lower than the boiling temperature.

[0108] The size of the set value is not limited. Exemplarily, the set value can be 30% - 70% of the target temperature.

[0109] In one embodiment, after controlling the first electrode assembly to be energized, the cooking method may include: determining that the temperature in the cooking cavity reaches the target temperature, and controlling the cooking appliance to enter the temperature control stage.

[0110] The temperature control stage means that the temperature in the cooking cavity 10a is generally maintained at the target temperature, that is, the temperature in the cooking cavity 10a fluctuates up and down near the target temperature.

[0111] Exemplarily, the cooking method may include: in the temperature control stage, controlling the energization duration of the second electrode assembly to be not less than that of the first electrode assembly. That is to say, the energization duration of the second electrode assembly may be equal to that of the first electrode assembly, or may be greater than that of the first electrode assembly.

[0112] Since the heating rate in the first region 10a1 is relatively fast, while the heating rate in the second region 10a2 is relatively slow, by controlling the energization duration of the second electrode assembly 30 to be not less than that of the first electrode assembly 20, the temperatures of the first region 10a1 and the second region 10a2 can be generally kept consistent.

[0113] More preferably, the ratio of the energization durations of the first electrode assembly 20 and the second electrode assembly 30 in the temperature control stage may be not less than 1:1 and not greater than 1:2. That is to say, the energization durations of the second electrode assembly 30 and the first electrode assembly 20 in the temperature control stage may be the same, or the energization duration of the second electrode assembly 30 may be twice that of the first electrode assembly 20.

[0114] Exemplarily, the cooking method includes: in the heating stage and / or the temperature control stage, determining that the temperature of the second region is lower than that of the first region; controlling the second electrode assembly to be energized, and / or, controlling the first electrode assembly to be de-energized.

[0115] That is to say, when the temperature of the second region 10a2 is lower than that of the first region 10a1, the second electrode assembly 30 can be controlled to be energized to heat the second region 10a2 to increase the temperature of the cooking ingredients in the second region 10a2, or the first electrode assembly 20 can be de-energized to stop heating the first region 10a1, or the second electrode assembly 30 can be controlled to be energized while the first electrode assembly 20 is de-energized to quickly make the temperature of the second region 10a2 not lower than that of the first region 10a1, thereby ensuring the temperature uniformity between the first region 10a1 and the second region 10a2.

[0116] In another embodiment, the cooking method includes: in the heating stage and / or the temperature control stage, determining that the temperature of the second region is not lower than that of the first region, and controlling the second electrode assembly and the first electrode assembly to be energized or de-energized simultaneously.

[0117] That is to say, when the temperature of the second region 10a2 is greater than or equal to the temperature of the first region 10a1, it is possible to control the second electrode assembly 30 and the first electrode assembly 20 to continue heating the second region 10a2 and the first region 10a1 respectively, or it is also possible to control the second electrode assembly 30 and the first electrode assembly 20 to stop heating the second region 10a2 and the first region 10a1 respectively.

[0118] To detect the temperatures of the first region 10a1 and the second region 10a2, a first detection element and a second detection element can be provided to detect the temperatures of the first region 10a1 and the second region 10a2 respectively, so as to control the first electrode assembly 20 and the second electrode assembly 30 in a timely manner. An embodiment of the present application also provides a storage medium storing computer-executable instructions that can be executed by a processor to implement the steps of the cooking method described in any embodiment of the present application.

[0119] The storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash memory, magnetic surface memory, optical disc, or CD-ROM, or can also include various devices that are one or any combination of the above memories.

[0120] The executable instructions can be in the form of a program, software, software module, script, or code, and can be written in any form of programming language (including compiled or interpreted languages, or declarative or procedural languages), and can be deployed in any form, including being deployed as an independent program or being deployed as a module, component, subroutine, or other unit suitable for use in a computer environment.

[0121] Exemplarily, the executable instructions may not necessarily correspond to files in the file system and can be stored as a part of a file that stores other programs or data. For example, they can be stored in one or more scripts in a hypertext markup language (HTML) document, stored in a single file dedicated to the program being discussed, or stored in multiple cooperating files.

[0122] Exemplarily, the executable instructions can be deployed to be executed on one computing device, or on multiple computing devices located at one location, or alternatively, on multiple computing devices distributed at multiple locations and interconnected by a network.

[0123] In the description of the present application, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in still other embodiments", or "exemplary", etc. mean 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 embodiments of the present application. In the present application, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine the different embodiments or examples described in the present application and the features of the different embodiments or examples.

[0124] The foregoing is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A cooking pot, characterized in that: include: An inner pot, the inner pot having a cooking cavity and an opening communicating with the cooking cavity, the opening being located at the top of the cooking cavity along the height direction; the cooking cavity comprising a first area and a second area arranged along the height direction, the opening being located at one side of the first area, and the second area being located at the other side of the first area away from the opening; a first electrode assembly, the first electrode assembly being used to form a first electric field in the first region of the cooking cavity; The second electrode assembly is used to form a second electric field in the second region of the cooking cavity.

2. The cooking pot according to claim 1, characterized in that: The first electrode assembly includes a first electrode and a second electrode, and the first electrode and the second electrode are respectively arranged on opposite sides of the first region; the second electrode assembly includes a third electrode and a fourth electrode, and the third electrode and the fourth electrode are respectively arranged on opposite sides of the second region.

3. The cooking pot according to claim 2, characterized in that: The first electrode and the third electrode are located on one side of the cooking cavity arranged along the height direction, and the second electrode and the fourth electrode are located on the other side of the cooking cavity arranged along the height direction, wherein the first electrode and the second electrode are arranged opposite to each other, and the third electrode and the fourth electrode are arranged opposite to each other.

4. The cooking pot according to claim 2, characterized in that: A minimum distance between the first electrode and the third electrode is smaller than a minimum distance between the first electrode and the fourth electrode, and a minimum distance between the first electrode and the second electrode is smaller than a minimum distance between the first electrode and the fourth electrode.

5. The cooking pot according to claim 4, characterized in that: The absolute value of the voltage difference between the first electrode and the third electrode is not greater than 10% of the absolute value of the voltage of the first electrode or the third electrode; and / or, An absolute value of a voltage difference between the second electrode and the fourth electrode is not greater than 10% of an absolute value of a voltage of the second electrode or the fourth electrode.

6. The cooking pot according to any one of claims 2 to 5, characterized in that: The electric field strength between the first electrode and the second electrode satisfies: |E1-E2| / d1≥10V / cm, wherein E1 is the voltage of the first electrode, E2 is the voltage of the second electrode, and d1 is the minimum distance between the first electrode and the second electrode; and / or, The electric field strength between the third electrode and the fourth electrode satisfies: |E3-E4| / d2≥10V / cm, where E3 is the voltage of the third electrode, E4 is the voltage of the fourth electrode, and d2 is the minimum distance between the third electrode and the fourth electrode.

7. The cooking pot according to any one of claims 2 to 4, characterized in that: There are multiple first electrode assemblies, and the multiple first electrode assemblies are arranged in sequence along the height direction; and / or, There are multiple second electrode assemblies, and the multiple second electrode assemblies are arranged in sequence along the height direction.

8. The cooking pot according to any one of claims 1 to 5, characterized in that: The number of electrodes of the second electrode assembly is not less than the number of electrodes of the first electrode assembly.

9. The cooking pot according to any one of claims 1 to 5, characterized in that: The first electrode assembly and / or the second electrode assembly are firmly connected to the inner container, and / or, The inner side wall of the inner pot has a mounting groove, the mounting groove is communicated with the cooking cavity, and at least a part of the structure of the first electrode assembly and / or at least a part of the structure of the second electrode assembly is clamped with the mounting groove.

10. The cooking pot according to any one of claims 1 to 5, characterized in that: The first electrode assembly and the second electrode assembly are connected to a power source, an insulating structure is arranged between the first electrode assembly and / or the second electrode assembly and the inner shell, or the inner shell includes an insulating member, and the first electrode assembly and / or the second electrode assembly are arranged on the insulating member.

11. The cooking pot according to claim 1, characterized in that: The first electrode assembly includes a first electrode and a second electrode, the first electrode and the second electrode are in a ring structure or a spiral structure, and / or the second electrode assembly includes a third electrode and a fourth electrode, the third electrode and the fourth electrode are in a ring structure or a spiral structure.

12. The cooking pot according to claim 11, characterized in that: The first electrode assembly and / or the second electrode assembly are detachably connected to the inner container, wherein the first electrode assembly and the second electrode assembly are integrally arranged.

13. The cooking pot according to claim 11, characterized in that: The second region includes a bottom and a side of the cooking cavity, and the second electrode assembly is disposed at the bottom and / or the side.

14. A cooking appliance, characterized in that: The cooking pot comprises the cooking pot as claimed in any one of claims 1 to 13, wherein during the cooking process of the cooking appliance, the electrical parameters of the first electric field and the second electric field corresponding to at least one power-on moment are different.

15. A cooking method for a cooking appliance, used in the cooking appliance according to claim 14, characterized in that: The cooking method comprises: The duration of power-on of the first electrode assembly and the duration of power-on of the second electrode assembly are controlled so that the time point at which the second region reaches the boiling temperature is no later than the time point at which the first region reaches the boiling temperature.

16. The cooking method according to claim 15, characterized in that: The cooking method comprises: The power-on time of the second electrode assembly is controlled to be not less than the power-on time of the first electrode assembly.

17. The cooking method according to claim 15 or 16, characterized in that: The cooking method comprises: During the temperature rising stage, controlling the second electrode assembly to be energized so as to raise the temperature of the second region; Determining that the temperature in the second zone reaches a set value of a target temperature; Controlling the first electrode assembly to be energized so as to increase the temperature of the first region; Wherein, the set value is less than the target temperature.

18. The cooking method according to claim 17, characterized in that: After controlling the first electrode assembly to be powered on, the cooking method includes: It is determined that the temperature in the cooking cavity reaches the target temperature, and the cooking appliance is controlled to enter a temperature control stage.

19. The cooking method according to claim 15 or 16, characterized in that: The cooking method comprises: During the temperature control stage, the power-on time of the second electrode assembly is controlled to be not less than the power-on time of the first electrode assembly.

20. The cooking method according to claim 15 or 16, characterized in that: The cooking method comprises: During the temperature rising stage and / or the temperature controlling stage, determining that the temperature of the second region is lower than the temperature of the first region; The second electrode assembly is controlled to be powered on, and / or the first electrode assembly is controlled to be powered off.

21. The cooking method according to claim 15 or 16, characterized in that: The cooking method comprises: In the temperature rising stage and / or the temperature controlling stage, it is determined that the temperature of the second region is not lower than the temperature of the first region, and the second electrode assembly and the first electrode assembly are controlled to be powered on or off at the same time.

22. A storage medium, characterized in that: The storage medium stores computer executable instructions, and the computer executable instructions can be executed by a processor to implement the steps of the cooking method described in any one of claims 15-21.

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