Food material cooking method, cooking utensil and storage medium

Abstract

The invention provides a food material cooking method, a cooking utensil and a storage medium, and relates to the technical field of food material cooking. According to the method, a first voltage signal which has a first pulse width and a first frequency and enables food materials and water between a first electrode and a second electrode to be in a first electric field intensity is applied to the first electrode and the second electrode, and energy generated by electric field pulses between the first electrode and the second electrode can destroy cell membranes of the food materials. The electrolyte inside and outside the cell membrane of the food material is unbalanced, so that the water channel of the food material from outside to inside can be opened, the water absorption of the inner core of the food material is accelerated, and the water absorption time is shortened; and applying a second voltage signal which has a second pulse width and a second frequency and enables the food material and water between the first electrode and the second electrode to be in a second electric field intensity to control the cooking utensil to be in a cooking stage, so that the food material can be quickly gelatinized in a spontaneous heating manner, the cooking time is further shortened, and the cooking efficiency is improved. Rapid cooking is achieved, and the cooking taste of food materials is improved.

Description

Technical Field

[0001] The present application relates to the technical field of food cooking, and in particular to a food cooking method, a cooking utensil, and a storage medium. Background Art

[0002] Currently, cooking utensils use a heating module to heat the outside of the pot, and transfer the heat to the food in the cooking cavity of the pot through heat conduction to cook the food. However, its heat transfer efficiency is limited by environmental factors, the thermal conductivity of the pot, and the rated power of the heating module, and it is impossible to achieve a high heat transfer performance.

[0003] For some starch-rich ingredients (such as rice, sweet potatoes, and corn), the cooking process is the process of starch gelatinization. Generally, starch-rich ingredients must absorb water first to gelatinize better. Since starch-rich ingredients have a dense starch structure, the above cooking method will make it take a long time for starch-rich ingredients to absorb water, resulting in a longer total cooking time for starch-rich ingredients. Summary of the invention

[0004] The present application provides a food cooking method, a cooking utensil, and a storage medium, which are used to solve the problem of long cooking time for starch-rich food in the prior art.

[0005] In a first aspect, the present application provides a food cooking method, which is applied to a cooking appliance, wherein the cooking appliance comprises a pulse electric field control module, a cooking cavity, a first electrode, and a second electrode, wherein the first electrode and the second electrode are arranged in the cooking cavity with a relative spacing, and the cooking cavity comprises food and liquid, and the pulse electric field control module is electrically connected to the first electrode and the second electrode respectively. The method provided by the present application comprises:

[0006] When the cooking appliance is in the water absorption stage, the pulse electric field control module applies a first voltage signal with a first pulse width and a first frequency between the first electrode and the second electrode, so that the food and liquid between the first electrode and the second electrode are in a first electric field strength;

[0007] When the cooking appliance is in the cooking stage after the water absorption stage, the pulse electric field control module applies a second voltage signal with a second pulse width and a second frequency between the first electrode and the second electrode, so that the temperature in the cooking cavity is increased to heat the food and the liquid, wherein the power of the second voltage signal is greater than the power of the first voltage signal;

[0008] When the detection parameter in the cooking cavity reaches a set threshold, the application of the second voltage signal to the first electrode and the second electrode is stopped.

[0009] In a possible implementation, based on the detection parameter in the cooking cavity reaching a set threshold, the step of stopping applying the second voltage signal to the first electrode and the second electrode includes:

[0010] When the current between the first electrode and the second electrode is lower than a set first current threshold, or when the temperature in the cooking cavity is higher than a set temperature threshold, the second voltage signal is stopped from being applied to the first electrode and the second electrode.

[0011] In a possible implementation, the method provided by the present application further includes:

[0012] When the cooking appliance is in the water absorption stage, the pulse electric field control module acquires a first temperature in the cooking cavity;

[0013] When the first temperature is higher than a set first temperature threshold, stop applying the first voltage signal to the first electrode and the second electrode, wherein the value range of the first temperature threshold is 40 degrees Celsius to 70 degrees Celsius;

[0014] When it is determined that the first temperature drops to within the first temperature threshold and the working time of the water absorption stage does not reach the first time, a first voltage signal is applied to the first electrode and the second electrode.

[0015] In a possible implementation, when the cooking appliance is in the water absorption stage, the method provided by the present application further includes:

[0016] The cooking appliance is controlled to be in a water absorption stage and last for a preset first time period, wherein the first time period is less than 10 minutes.

[0017] In a possible implementation, the first pulse width is W1 microseconds, the first frequency is F1 working times per minute, the first electric field strength is E1 kilovolts per centimeter, and the first duration is greater than 1 minute and less than 5 minutes.

[0018] In a possible implementation, the cooking stage includes a temperature rise stage and a boiling maintenance stage. When the cooking appliance is in the cooking stage after the water absorption stage, the pulse electric field control module applies a second voltage signal having a second pulse width and a second frequency between the first electrode and the second electrode to increase the temperature in the cooking cavity to heat the food and the liquid, including:

[0019] When the cooking appliance is in a cooking stage after the water absorption stage, the pulse electric field control module acquires a second temperature in the cooking cavity;

[0020] Applying a second pulse width having a first value, a second frequency having a first value, and a second voltage signal that causes food and water between the first electrode and the second electrode to be in a second electric field strength having a first value to the first electrode and the second electrode, so as to control the cooking appliance to be in a heating stage;

[0021] When it is determined that the second temperature value is greater than a set second temperature threshold, applying a second pulse width having a second value, a second frequency having a second value, and a second voltage signal that causes food and water between the first electrode and the second electrode to be in a second electric field strength having a second value to the first electrode and the second electrode, so as to control the cooking appliance to be in a boiling holding stage;

[0022] The value range of the second temperature threshold is 85 degrees Celsius to 96 degrees Celsius, and the power of the second voltage signal in the boiling maintenance stage is less than the power of the second voltage signal in the heating stage.

[0023] In a possible implementation manner, the second pulse width having the first value is W 21 microseconds, the second frequency with the first value is the number of operations per minute F 21 , the second electric field strength with the first value is E 21 Kilovolts per centimeter, of which 10,000 <E 21 ×F 21 ×W 21 <30000;

[0024] The second pulse width with a second value is W 22 microseconds, the second frequency with the second value is the number of operations per minute F 22 , the second electric field strength with the second value is E 22 kilovolts per centimeter, where and E 21 ×F 21 ×W 21 <E 22 ×F 22 ×W 22 .

[0025] In a possible implementation manner, the first electrode and the second electrode are disposed relatively spaced apart along left and right sides of the cooking cavity.

[0026] In a possible implementation, before the step of applying the first voltage signal having the first pulse width and the first frequency to the first electrode and the second electrode by the pulse electric field control module, the method provided by the present application further includes:

[0027] The pulse electric field control module applies an initial voltage signal to the first electrode and the second electrode in response to a start operation of a cooking program;

[0028] When current is detected between the first electrode and the second electrode, a first voltage signal having a first pulse width and a first frequency is applied to the first electrode and the second electrode so that the food and water between the first electrode and the second electrode are under a first electric field strength.

[0029] In a possible implementation, the first electrode is connected to the top of the cooking cavity through a retractable rod, a surface of the first electrode is provided with a plurality of through holes, and the second electrode is provided at the bottom of the cooking cavity, and the method further includes:

[0030] During the water absorption stage, if the pulse electric field control module detects that there is no current signal between the first electrode and the second electrode, the retractable rod is controlled to extend to a preset length to drive the first electrode to move downward.

[0031] In a possible implementation, the pulse electric field control module stops applying the second voltage signal to the first electrode and the second electrode when detecting that the current flowing through the first electrode and the second electrode is lower than a set current threshold, including:

[0032] When the pulse electric field control module detects that the current flowing through the first electrode and the second electrode is lower than a set current threshold, the pulse electric field control module controls the retractable rod to extend to a preset length to drive the first electrode to move downward;

[0033] When the current flowing through the first electrode and the second electrode is lower than the set current threshold, determining whether the total length of the telescopic rod is greater than the set length threshold, or determining whether the pressure value collected by the pressure sensor embedded at the connection between the first electrode and the telescopic rod is greater than the set pressure threshold;

[0034] If the total length is greater than the set length threshold, or the pressure value is greater than the set pressure threshold, the application of the second voltage signal to the first electrode and the second electrode is stopped.

[0035] In a possible implementation, the pulse electric field control module applies a first voltage signal having a first pulse width and a first frequency to the first electrode and the second electrode so that the food and water between the first electrode and the second electrode are under a first electric field strength, including:

[0036] The pulse electric field control module controls the retractable rod to retract in response to the start operation of the cooking program, so as to drive the first electrode to move upward to a specified highest position;

[0037] applying an initial voltage signal to the first electrode and the second electrode;

[0038] Controlling the retractable rod to lengthen so as to drive the first electrode to move downward;

[0039] When it is determined that current exists between the first electrode and the second electrode, a first voltage signal having a first pulse width and a first frequency is applied to the first electrode and the second electrode so that the food and water between the first electrode and the second electrode are under a first electric field strength.

[0040] In a possible implementation manner, after controlling the retractable rod to lengthen to drive the first electrode to move downward, the method provided by the present application further includes:

[0041] When it is detected that the current flowing through the first electrode and the second electrode is greater than the set short-circuit current threshold, the alarm module is controlled to output prompt information for instructing to add food and water.

[0042] In a second aspect, the present application also provides a cooking utensil, comprising a pulsed electric field control module, a cooking cavity, a first electrode, and a second electrode, wherein the first electrode and the second electrode are relatively spaced apart in the cooking cavity, the pulsed electric field control module is electrically connected to the first electrode and the second electrode, respectively, and the pulsed electric field control module is used to execute the method provided in the first aspect of the present application.

[0043] In a third aspect, the present application further provides a storage medium on which a computer program is stored, wherein the computer program, when executed by a processor, implements the method provided in the first aspect of the present application.

[0044] The present application provides a food cooking method, a cooking utensil, and a storage medium. When the cooking utensil is in the water absorption stage, a pulse electric field control module applies a first voltage signal having a first pulse width and a first frequency between a first electrode and a second electrode, so that the food and liquid between the first electrode and the second electrode are in a first electric field strength. Since food and water are usually conductive media, when the first electrode and the second electrode are applied with a first voltage signal, the first electrode, food and water, and the second electrode are connected to form a loop, and the food and water have resistance and can generate heat by themselves, creating a good water absorption temperature condition for the food and water, and the energy generated by the electric field pulse between the first electrode and the second electrode can destroy the cell membrane of the food, so that the electrolytes inside and outside the cell membrane of the food are unbalanced, and the surface of the food can be electroporated, the water channel of the food from the outside to the inside is opened, and the water absorption of the inner core of the food can be accelerated. The fast water absorption of the food can be completed within 10 minutes, shortening the water absorption time, realizing fast cooking and improving the cooking taste of the food, so that the water absorption effect of starchy food with a complete epidermis is better, avoiding the problem of undercooked cooking and hard core being uncooked.

[0045] Furthermore, when the cooking appliance is in the cooking stage after the water absorption stage, the pulse electric field control module can apply a second voltage signal with a second pulse width and a second frequency between the first electrode and the second electrode, so that the temperature in the cooking cavity increases to heat the food and liquid. Since the power of the second voltage signal is greater than the power of the first voltage signal, when the first electrode and the second electrode are applied with the second voltage signal, the first electrode, the food and water, and the second electrode are connected to form a loop. The food and water have resistance and can self-heat under the action of the electric field, and the heating efficiency is high. In this way, the food can be quickly gelatinized, further shortening the cooking time. Among them, the first voltage signal and the second voltage signal are both pulse signals, with the characteristics of pulse width and frequency, and can use the continuous and repeated action of the pulse on the food and water to achieve non-contact heating of the food and water.

[0046] In addition, during the water absorption stage and the cooking stage, the electric field between the first electrode and the second electrode can destroy the endosperm structure of the rice, causing the starch particles inside the food to fall off and precipitate into the aqueous solution. After steaming and absorbing water, the precipitated starch will be enriched on the surface of the food, making the cooked food brighter. In addition, when the food is chewed in the mouth, the starch enriched on the surface of the food is easily converted into sweet substances such as maltose by the digestive enzymes in the mouth, which increases the sweetness of the food. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0048] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0049] Figure 1 One of the structural schematic diagrams of the cooking utensil provided in the embodiment of the present application;

[0050] Figure 2 One of the flow charts of the food cooking method provided in the embodiment of the present application;

[0051] Figure 3 The second flowchart of the food cooking method provided in the embodiment of the present application;

[0052] Figure 4 This is the second structural schematic diagram of the cooking utensil provided in the embodiment of the present application.

[0053] Explanation of the icons involved in the drawings: pulse electric field control module 101 , cooking cavity 102 , first electrode 103 , second electrode 104 , and retractable rod 105 . DETAILED DESCRIPTION

[0054] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0055] Various structural schematic diagrams according to embodiments of the present disclosure are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may further design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0056] In the context of the present disclosure, when a layer / element is referred to as being "on" another layer / element, the layer / element may be directly on the other layer / element or an intervening layer / element may exist therebetween. In addition, if a layer / element is "on" another layer / element in one orientation, the layer / element may be "below" the other layer / element when the orientation is reversed.

[0057] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments made by ordinary technicians in this field under the enlightenment of the embodiments belong to the scope of protection of the present application.

[0058] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0059] The present application embodiment provides a method for cooking food, which is applied to a cooking utensil, which may be, but is not limited to, an electric rice cooker. Figure 1 As shown, the cooking appliance includes a pulse electric field control module 101, a cooking cavity 102, a first electrode 103, and a second electrode 104. The first electrode 103 and the second electrode 104 are arranged in the cooking cavity 102 with relative spacing. The cooking cavity 102 includes food and liquid. The pulse electric field control module 101 is electrically connected to the first electrode 103 and the second electrode 104, respectively. The pulse electric field control module 101 includes a processor and a pulse electric field generator. The processor is used to control the pulse electric field generator to apply an electric field to the cooking cavity. The first electrode 103 can be a positive electrode and the second electrode 104 can be a negative electrode, or the second electrode 104 can be a positive electrode and the first electrode 103 can be a negative electrode. Figure 2 As shown, the method provided in the embodiment of the present application includes:

[0060] S201: When the cooking utensil is in the water absorption stage, the pulse electric field control module 101 applies a first voltage signal having a first pulse width and a first frequency between the first electrode 102 and the second electrode 103, so that the food and liquid between the first electrode 103 and the second electrode 104 are in a first electric field strength.

[0061] It should be noted that when the pulsed electric field control module 101 is in the water absorption stage of the cooking appliance, the pulsed electric field control module 101 can obtain the first temperature in the cooking cavity 102. For example, a temperature sensor may be embedded in the cooking cavity 102, and when the cooking appliance is in the water absorption stage, the pulsed electric field control module 101 can receive the first temperature from the temperature sensor. When the first temperature is higher than the set first temperature threshold, it indicates that the temperature in the cooking cavity 102 is relatively high and it is not suitable for the ingredients to quickly complete water absorption. In this case, the pulsed electric field control module 101 stops applying the first voltage signal to the first electrode 103 and the second electrode 104, so as to cool down the temperature in the cooking cavity 102, and the value range of the first temperature threshold is 40 °C - 70 °C. For example, the first temperature threshold can be 40 °C, 55 °C or 70 °C, etc., which is not limited here.

[0062] When it is determined that the first temperature has dropped to within the set temperature threshold and the working duration of the water absorption stage has not reached the first duration, when the first temperature is higher than the set first temperature threshold, it indicates that the temperature in the cooking cavity 102 is already suitable for the ingredients to quickly complete water absorption. Then, the pulsed electric field control module 101 resumes applying the first voltage signal to the first electrode 103 and the second electrode 104. Specifically, the first voltage signal is a pulsed signal with the characteristics of pulse width and frequency. The pulse width of the pulsed signal refers to the duration of the pulsed signal, and the frequency refers to the number of times the pulse repeats per unit time.

[0063] Exemplarily, the first duration is less than 10 min. For example, the first duration can be, but is not limited to, 4 min, 6 min, 8 min, etc., which is not limited here.

[0064] Generally, the first pulse width is W1 microseconds, the first frequency is F1 working times per minute, and the first electric field strength is E1 kV / cm. When 3000 < E1×F1×W1 < 10000, the first duration can be greater than 1 min and less than 5 min, which greatly shortens the duration of the water absorption stage.

[0065] Specifically, the pulsed electric field control module applies a first voltage signal with a preset electric field strength magnitude to the ingredients and the liquid, and uses a pulsed electric field with a relatively high voltage to perform a short and intense electric shock on the cell membrane on the surface of the ingredients to be water-absorbed. Through the electric field induction, micropores (electroporation) are formed on the cell membrane. These micropores make it easier for the external liquid to penetrate into the ingredients. While increasing the permeability of the cell membrane, it promotes the rapid water absorption of the ingredients.

[0066] Exemplarily, the first electric field strength E1 is measured as follows: obtain the voltage difference |V1-V2| and the shortest distance d between the first electrode 103 and the second electrode 104; divide the voltage difference |V1-V2| by the shortest distance d to obtain the first electric field strength E1, such as, the first electric field strength E1 = (|V1-V2|) / d, kV), or alternatively, use an oscilloscope to directly measure the electric field parameters of the first electric field, wherein the periodic first voltage signal includes a first electric field strength of E1 (a pulse electric field strength range is 10-50 kV / cm), a first frequency of F1 (frequency is the number of working times per minute, Hz), and a first pulse width of W1 (pulse width is the duration of each working cycle, μs).

[0067] S202: When the cooking utensil is in the cooking stage after the water absorption stage, the pulsed electric field control module 101 applies a second voltage signal with a second pulse width and a second frequency between the first electrode 103 and the second electrode 104 to increase the temperature in the cooking cavity 102 to heat the food and liquid, wherein the power of the second voltage signal is greater than the power of the first voltage signal.

[0068] Specifically, the second voltage signal forms a high-power pulse electric field between the first electrode and the second electrode, which can instantly generate radiation energy, thereby achieving non-contact heating of food and liquid. When the high-voltage electric field passes through the food in the liquid environment, it causes the acceleration and speed change of electrons. The interaction between electrons and molecules causes vibration and friction inside the molecules, thereby increasing the temperature inside the food.

[0069] For example, the second pulse width is W 21 microseconds, with a second frequency of F working times per minute 21 , the second electric field strength with the first value is E 21 Kilovolts per centimeter, 10,000 <E 21 ×F 21 ×W 21 <30000. When 10000 <E 21 ×F 21 ×W 21 When the temperature is <30000, the self-heating efficiency of the food and water can be high, so that the food and water can be heated up quickly for cooking.

[0070] Specifically, the cooking stage includes a temperature rising stage and a boiling maintenance stage. Figure 3 As shown, S202 can be specifically implemented as follows:

[0071] S301 : when the cooking appliance is in a cooking stage after the water absorption stage, the pulse electric field control module 101 acquires a second temperature in the cooking cavity 102 .

[0072] Exemplarily, a temperature sensor may be embedded in the cooking cavity 102, and the pulsed electric field control module 101 may receive the second temperature from the temperature sensor.

[0073] S301: The pulse electric field control module 101 applies a second pulse width having a first value, a second frequency having a first value, and a second voltage signal that causes the food and water between the first electrode 103 and the second electrode 104 to be in a second electric field strength having a first value to the first electrode 103 and the second electrode 104, so as to control the cooking appliance to be in a heating stage. Specifically, the second voltage signal is a pulse signal having the characteristics of pulse width and frequency. The pulse width of a pulse signal refers to the duration of the pulse signal, while the frequency refers to the number of times the pulse is repeated per unit time.

[0074] In some embodiments, the second pulse width having the first value is W 21 microseconds, the second frequency with the first value is the number of operations per minute F 21 , the second electric field strength with the first value is E 21 Kilovolts per centimeter, 10,000 <E 21 ×F 21 ×W 21 <30000. When 10000 <E 21 ×F 21 ×W 21 <30000, the food and water can be quickly heated to a second temperature threshold that makes the food and water boil, and the value range of the second temperature threshold is 85 degrees Celsius-96 degrees Celsius. For example, the second temperature threshold can be but is not limited to 90 degrees Celsius, 95 degrees Celsius, or 96 degrees Celsius.

[0075] S302: When it is determined that the second temperature value is greater than the set second temperature threshold, a second pulse width having a second value, a second frequency having a second value, and a second voltage signal such that the food and water between the first electrode 103 and the second electrode 104 are in a second electric field strength having a second value are applied to the first electrode 103 and the second electrode 104 to control the cooking appliance to be in the boiling maintenance stage.

[0076] Among them, the value range of the second temperature threshold is 85 degrees Celsius-96 degrees Celsius, and the power of the second voltage signal in the boiling maintenance stage is less than the power of the second voltage signal in the heating stage. In this way, the water in the cooking cavity 102 can evaporate more slowly, so that the ingredients can be fully gelatinized.

[0077] For example, the second pulse width with the second value is W 22 microseconds, the second frequency with the second value is the number of operations per minute F 22, the second electric field strength with the second value is E 22 kilovolts per centimeter, where and E 21 ×F 21 ×W 21 <E 22 ×F 22 ×W 22 .

[0078] S203 : When the detection parameter in the cooking cavity 102 reaches a set threshold, stop applying the second voltage signal to the first electrode 103 and the second electrode 104 .

[0079] Specifically, when it is detected that the current flowing through the first electrode 103 and the second electrode 104 is lower than the set current threshold, the first electrode 103 and the second electrode 104 are electrically disconnected, indicating that the water in the cooking cavity 102 has evaporated completely, and thus the second voltage signal is stopped from being applied to the first electrode 103 and the second electrode 104 to end cooking. Alternatively, when the temperature value in the cooking cavity 102 (which can be obtained by the temperature sensor) is higher than the set temperature threshold and lasts for a set time, it can also be indicated that the water in the cooking cavity 102 has evaporated completely, and thus the second voltage signal is stopped from being applied to the first electrode 103 and the second electrode 104 to end cooking.

[0080] In summary, in a method for cooking food provided by an embodiment of the present application, when the cooking utensil is in the water absorption stage, the pulse electric field control module applies a first voltage signal having a first pulse width and a first frequency between the first electrode and the second electrode, so that the food and liquid between the first electrode 103 and the second electrode 104 are in a first electric field strength. Since food and water are usually conductive media, when the first electrode 103 and the second electrode 104 are applied with a first voltage signal, the first electrode 103, the food and water, and the second electrode 104 are connected to form a loop, and the food and water have resistance and can generate heat by themselves, creating a good water absorption temperature condition for the food and water, and the energy generated by the electric field pulse between the first electrode 103 and the second electrode 104 can destroy the cell membrane of the food, so that the electrolytes inside and outside the cell membrane of the food are unbalanced, and the surface of the food can be electroporated, the water channel of the food from the outside to the inside is opened, and the water absorption of the inner core of the food is accelerated, and the express water absorption of the food can be completed within 10 minutes, shortening the water absorption time.

[0081] Furthermore, when the cooking appliance is in the cooking stage after the water absorption stage, the pulse electric field control module 101 can apply a second voltage signal with a second pulse width and a second frequency between the first electrode 102 and the second electrode 103, so as to increase the temperature in the cooking cavity 102 to heat the food and liquid. Since the power of the second voltage signal is greater than the power of the first voltage signal, when the first electrode 103 and the second electrode 104 are applied with the second voltage signal, the first electrode 103, the food and water, and the second electrode 104 are connected to form a loop, and the food and water have resistance and can self-heat under the action of the electric field, with high heating efficiency, so that the food can be quickly gelatinized, further shortening the cooking time.

[0082] In addition, during the water absorption stage and the cooking stage, the electric field between the first electrode 103 and the second electrode 104 can destroy the endosperm structure of the rice, so that the starch particles inside the food will fall off and precipitate into the aqueous solution. After steaming and absorbing water, the precipitated starch will be enriched on the surface of the food, making the cooked food brighter. In addition, when the food is chewed in the mouth, the starch enriched on the surface of the food is easily converted into sweet substances such as maltose by the digestive enzymes in the mouth, which increases the sweetness of the food.

[0083] like Figure 1 As shown, the first electrode 103 and the second electrode 104 are arranged at intervals along the left and right sides of the cooking cavity 102. In this case, the above S201 can be specifically implemented as follows: the pulse electric field control module 101 applies an initial voltage signal to the first electrode 103 and the second electrode 104 in response to the start operation of the cooking program; when it is detected that there is a current between the first electrode 103 and the second electrode 104, it means that food and water have been put into the cooking cavity 102. Then, a first voltage signal having a first pulse width and a first frequency and making the food and water between the first electrode 103 and the second electrode 104 be under a first electric field strength is applied to the first electrode 103 and the second electrode 104. When it is detected that there is no current signal between the first electrode 103 and the second electrode 104, a prompt message that no food and water are put in is output. For example, the text message "no food and water are put in" is output to the display panel of the cooking appliance for display.

[0084] In other embodiments, Figure 4 As shown, the first electrode 103 is connected to the top of the cooking cavity 102 through a retractable rod 105, a plurality of through holes are arranged on the surface of the first electrode 103, and the second electrode 104 is arranged at the bottom of the cooking cavity 102. The method provided in the embodiment of the present application may also include:

[0085] During the water absorption stage, the pulse electric field control module 101 detects whether there is current between the first electrode 103 and the second electrode 104 (the detection frequency is once per minute). If the pulse electric field control module 101 detects that there is no current signal between the first electrode 103 and the second electrode 104, it means that the water in the cooking cavity 102 has evaporated, resulting in the inability of the existing water to submerge the surface of the first electrode 103. In order to enable the food and water in the cooking cavity 102 to continue to self-heat to maintain a good water absorption temperature, the pulse electric field control module 101 controls the retractable rod 105 to extend a preset length to drive the first electrode 103 to move downward until the pulse electric field control module 101 detects that there is current between the first electrode 103 and the second electrode 104. At this time, the water in the cooking cavity 102 submerges the surface of the first electrode 103 again, so that the food and water in the cooking cavity 102 can continue to self-heat to maintain a good water absorption temperature. It should be noted that since the first electrode 103 and the second electrode 104 are arranged opposite to each other up and down, even if there is a bend on the left and right sides of the bottom of the cooking cavity, the pulse generated between the first electrode 103 and the second electrode 104 can enable all the food and water between the first electrode 103 and the second electrode 104 to continue to self-heat.

[0086] Similarly, during the heating stage, the pulse electric field control module 101 detects whether there is current between the first electrode 103 and the second electrode 104 (the detection frequency is once per minute). If the pulse electric field control module 101 detects that there is no current signal between the first electrode 103 and the second electrode 104, it means that the water in the cooking cavity 102 has evaporated, resulting in the inability of the existing water to submerge the surface of the first electrode 103. In order to enable the food and water in the cooking cavity 102 to continue to self-heat to maintain a good heating temperature, the pulse electric field control module 101 controls the retractable rod 105 to extend a preset length to drive the first electrode 103 to move downward until the pulse electric field control module 101 detects that there is current between the first electrode 103 and the second electrode 104. At this time, the water in the cooking cavity 102 submerges the surface of the first electrode 103 again, so that the food and water in the cooking cavity 102 can continue to self-heat to maintain a good heating temperature. It should be noted that since the first electrode 103 and the second electrode 104 are arranged opposite to each other up and down, even if there is a bend on the left and right sides of the bottom of the cooking cavity, the pulse generated between the first electrode 103 and the second electrode 104 can enable all the food and water between the first electrode 103 and the second electrode 104 to continue to self-heat.

[0087] In some embodiments, Figure 4On the basis of the corresponding embodiment, the pulse electric field control module 101 detects whether the current between the first electrode 103 and the second electrode 104 is lower than the set threshold value (the detection frequency is once per minute). When it is detected that the current flowing through the first electrode 103 and the second electrode 104 is lower than the set current threshold value (such as 0.1A, 0.2A), it indicates that the water in the cooking cavity 102 evaporates, causing the water level to drop, and thus the retractable rod 105 is controlled to extend a preset length to drive the first electrode 103 to move downward.

[0088] When it is determined again that the current flowing through the first electrode 103 and the second electrode 104 is lower than the set current threshold, it is determined whether the total length (such as 1 cm, 1.5 cm or 2 cm) of the telescopic rod 105 is greater than the set length threshold, or it is determined whether the pressure value collected by the pressure sensor embedded at the connection between the first electrode 103 and the telescopic rod 105 is greater than the set pressure threshold (0.005N-1N); if the total length is greater than the set length threshold, or the pressure value is greater than the set pressure threshold, it means that the water in the cooking cavity 102 has been evaporated and the food has been gelatinized and cooked, and then the second voltage signal is stopped from being applied to the first electrode 103 and the second electrode 104.

[0089] In some embodiments, Figure 4 On the basis of the corresponding embodiments, S201 can be specifically implemented as the pulse electric field control module 101 controls the retractable rod 105 to contract in response to the start operation of the cooking program, so as to drive the first electrode 103 to move upward to the specified highest position; then, applies an initial voltage signal to the first electrode 103 and the second electrode 104; controls the retractable rod 105 to lengthen, so as to drive the first electrode 103 to move downward; when it is determined that there is a current between the first electrode 103 and the second electrode 104, it means that the water in the cooking cavity 102 has submerged the surface of the first electrode 103, and then applies a first voltage signal having a first pulse width and a first frequency to the first electrode 103 and the second electrode 104 so that the food and water between the first electrode 103 and the second electrode 104 are under a first electric field strength, so that the food and water in the cooking cavity 102 can continue to self-heat to maintain a good water absorption temperature.

[0090] In addition, when it is detected that the current flowing through the first electrode 103 and the second electrode 104 is greater than the set short-circuit current threshold, it means that no water and food are added to the cooking chamber 102, and the first electrode 103 has dropped to fit with the second electrode 104, resulting in a short circuit between the first electrode 103 and the second electrode 104, and the alarm module is controlled to output a prompt message for indicating the addition of food and water. For example, a text message of "no food and water are added" is output to the display panel of the cooking appliance for display.

[0091] The embodiment of the present application provides a food cooking device, which is configured in a pulse electric field control module 101, and the pulse electric field control module 101 is set in a cooking device. The cooking device includes a pulse electric field control module 101, a cooking cavity 102, a first electrode 103, and a second electrode 104. The first electrode 103 and the second electrode 104 are arranged in the cooking cavity 102 with a relative interval. The cooking cavity 102 contains food and liquid. The pulse electric field control module 101 is electrically connected to the first electrode 103 and the second electrode 104 respectively. The device provided by the present application includes

[0092] The voltage applying unit is used to apply a first voltage signal with a first pulse width and a first frequency between the first electrode 103 and the second electrode 104 when the cooking appliance is in the water absorption stage, so that the food and liquid between the first electrode 103 and the second electrode 104 are in a first electric field strength.

[0093] Exemplarily, the voltage applying unit is specifically used to control the cooking appliance to be in the water absorption stage and last for a preset first time period, wherein the first time period is less than 10 minutes.

[0094] The voltage applying unit is also used to apply a second voltage signal with a second pulse width and a second frequency between the first electrode 103 and the second electrode 104 when the cooking appliance is in the cooking stage after the water absorption stage, so as to increase the temperature in the cooking cavity 102 to heat the food and liquid, wherein the power of the second voltage signal is greater than the power of the first voltage signal.

[0095] The voltage applying unit is further used to stop applying the second voltage signal to the first electrode and the second electrode when the detection parameter in the cooking cavity 102 reaches a set threshold.

[0096] The voltage applying unit is specifically used to stop applying the second voltage signal to the first electrode 103 and the second electrode 104 to end cooking when it is detected that the current flowing through the first electrode 103 and the second electrode 104 is lower than the set current threshold. Alternatively, when the temperature value in the cooking cavity 102 (which can be obtained by the temperature sensor) is higher than the set temperature threshold and lasts for a set time, stop applying the second voltage signal to the first electrode 103 and the second electrode 104 to end cooking.

[0097] In some embodiments, the device provided in the embodiments of the present application further includes:

[0098] The temperature acquisition unit is used to acquire the first temperature in the cooking cavity 102. The voltage application unit is also used to stop applying the first voltage signal to the first electrode 103 and the second electrode 104 when the first temperature is higher than a set first temperature threshold, wherein the value range of the first temperature threshold is 40 degrees Celsius to 70 degrees Celsius. When it is determined that the first temperature drops to within the set temperature threshold and the working time of the water absorption stage does not reach the first time, the first voltage signal is resumed to the first electrode 103 and the second electrode 104.

[0099] In some embodiments, the first pulse width is W1 microseconds, the first frequency is F1 working times per minute, the first electric field strength is E1 kilovolts per centimeter, and the first duration is greater than 1 minute and less than 5 minutes.

[0100] In some embodiments, the cooking stage includes a temperature rise stage and a boiling maintenance stage. The temperature acquisition unit is used to acquire the second temperature in the cooking cavity 102 when the cooking appliance is in the cooking stage after the water absorption stage. The voltage application unit is specifically used to apply a second pulse width having a first value, a second frequency having a first value, and a second voltage signal that causes the food and water between the first electrode 103 and the second electrode 104 to be in a second electric field strength having a first value to the first electrode 103 and the second electrode 104, so as to control the cooking appliance to be in the temperature rise stage; when it is determined that the second temperature value is greater than a set second temperature threshold, a second pulse width having a second value, a second frequency having a second value, and a second voltage signal that causes the food and water between the first electrode 103 and the second electrode 104 to be in a second electric field strength having a second value are applied to the first electrode 103 and the second electrode 104, so as to control the cooking appliance to be in the boiling maintenance stage.

[0101] The value range of the second temperature threshold is 85 degrees Celsius to 96 degrees Celsius, and the power of the second voltage signal in the boiling maintenance stage is less than the power of the second voltage signal in the heating stage.

[0102] In some embodiments, the second pulse width having the first value is W 21 microseconds, the second frequency with the first value is the number of operations per minute F 21 , the second electric field strength with the first value is E 21 Kilovolts per centimeter, 10,000 <E 21 ×F 21 ×W 21 <30000;

[0103] The second pulse width with a second value is W 22 microseconds, the second frequency with the second value is the number of operations per minute F 22, the second electric field strength with the second value is E 22 kilovolts per centimeter, where and E 21 ×F 21 ×W 21 <E 22 ×F 22 ×W 22 .

[0104] In some embodiments, the first electrode 103 and the second electrode 104 are disposed relatively spaced apart along left and right sides of the cooking cavity 102 .

[0105] In some embodiments, the voltage applying unit is specifically used to apply an initial voltage signal to the first electrode 103 and the second electrode 104 in response to a start operation of a cooking program; when a current is detected between the first electrode 103 and the second electrode 104, a first voltage signal having a first pulse width and a first frequency is applied to the first electrode 103 and the second electrode 104 so that the food and water between the first electrode 103 and the second electrode 104 are under a first electric field strength.

[0106] In some embodiments, the first electrode 103 is connected to the top of the cooking cavity 102 via a retractable rod 105, a plurality of through holes are provided on the surface of the first electrode 103, and the second electrode 104 is provided at the bottom of the cooking cavity 102. The device provided in the embodiment of the present application may also include:

[0107] The electrode control unit is used to control the retractable rod 105 to extend to a preset length to drive the first electrode 103 to move downward if no current signal is detected between the first electrode 103 and the second electrode 104 during the water absorption stage.

[0108] In some embodiments, the electrode control unit is further used to control the retractable rod 105 to extend to a preset length to drive the first electrode 103 to move downward when it is detected that the current flowing through the first electrode 103 and the second electrode 104 is lower than the set current threshold; when it is determined again that the current flowing through the first electrode 103 and the second electrode 104 is lower than the set current threshold, determine whether the total length of the retractable rod 105 is greater than the set length threshold, or determine whether the pressure value collected by the pressure sensor embedded at the connection between the first electrode 103 and the retractable rod 105 is greater than the set pressure threshold.

[0109] The voltage applying unit is specifically configured to stop applying the second voltage signal to the first electrode 103 and the second electrode 104 if the total length is greater than a set length threshold, or the pressure value is greater than a set pressure threshold.

[0110] In some embodiments, the electrode control unit is used to control the retractable rod 105 to retract in response to the start operation of the cooking program, so as to drive the first electrode 103 to move upward to a specified highest position.

[0111] The voltage applying unit is further used to apply an initial voltage signal to the first electrode 103 and the second electrode 104 .

[0112] The electrode control unit is also used to control the telescopic rod 105 to lengthen, so as to drive the first electrode 103 to move downward.

[0113] The voltage applying unit is further used to apply a first voltage signal having a first pulse width and a first frequency to the first electrode 103 and the second electrode 104 so that the food and water between the first electrode 103 and the second electrode 104 are under a first electric field strength when it is determined that there is a current between the first electrode 103 and the second electrode 104.

[0114] In some embodiments, the alarm control unit is used to control the alarm module to output prompt information for instructing to add food and water when it is detected that the current flowing through the first electrode 103 and the second electrode 104 is greater than a set short-circuit current threshold.

[0115] In addition, an embodiment of the present application also provides a cooking utensil, which includes a pulsed electric field control module 101, a cooking cavity 102, a first electrode 103, and a second electrode 104. The first electrode 103 and the second electrode 104 are relatively spaced apart in the cooking cavity 102. The pulsed electric field control module 101 is electrically connected to the first electrode 103 and the second electrode 104, respectively. The pulsed electric field control module 101 is used to execute the method provided in the above embodiment of the present application.

[0116] At the hardware level, the pulse electric field control module includes a processor and a pulse electric field generator, and the processor is used to control the pulse electric field generator to apply an electric field to the cooking cavity. Optionally, the cooking appliance also includes an internal bus, a network interface, and a memory. Among them, the memory may include a memory, such as a high-speed random access memory (RAM), and may also include a non-volatile memory (non-volatile memory). Of course, the cooking appliance may also include hardware required for other services. For example, the cooking appliance can be, but is not limited to, an electric rice cooker.

[0117] The processor, the network interface and the memory may be interconnected via an internal bus. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory is used to store programs. Specifically, the program may include a program code, and the program code includes computer operation instructions. The memory may include a memory and a non-volatile memory, and provides instructions and data to the processor.

[0118] The processor reads the corresponding computer program from the non-volatile memory into the memory and then runs it, forming a food cooking device at the logical level. The processor executes the program stored in the memory and is specifically used to perform the following operations:

[0119] When the cooking appliance is in the water absorption stage, the pulse electric field control module applies a first voltage signal with a first pulse width and a first frequency between the first electrode and the second electrode, so that the food and liquid between the first electrode and the second electrode are in a first electric field strength;

[0120] When the cooking appliance is in the cooking stage after the water absorption stage, the pulse electric field control module applies a second voltage signal with a second pulse width and a second frequency between the first electrode and the second electrode, so that the temperature in the cooking cavity is increased to heat the food and the liquid, wherein the power of the second voltage signal is greater than the power of the first voltage signal;

[0121] When the detection parameter in the cooking cavity reaches a set threshold, the application of the second voltage signal to the first electrode and the second electrode is stopped.

[0122] The processor may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor or by instructions in the form of software. The above processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in this application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in this application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in a decoding processor. The software module may be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0123] Of course, in addition to software implementation, the cooking appliance of the present application does not exclude other implementation methods, such as logic devices or a combination of software and hardware, etc., that is to say, the execution subject of the following processing flow is not limited to each logic unit, but can also be hardware or logic devices.

[0124] In addition, the embodiment of the present application also provides a computer-readable storage medium, which stores one or more programs, wherein the one or more programs include instructions, which, when executed by a cooking appliance including a plurality of application programs, enable the cooking appliance to execute Figure 2 The method of the illustrated embodiment.

[0125] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. The information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies.

[0126] In addition, the embodiment of the present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the present application. Figure 2 Cooking methods for ingredients shown.

[0127] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0128] In addition, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0129] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0130] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A method for cooking food, characterized in that: The invention is applied to a cooking appliance, the cooking appliance comprising a pulse electric field control module, a cooking cavity, a first electrode, and a second electrode, the first electrode and the second electrode are arranged in the cooking cavity with a relative interval, the cooking cavity comprises food and liquid, the pulse electric field control module is electrically connected to the first electrode and the second electrode respectively, and the method comprises: When the cooking appliance is in the water absorption stage, the pulse electric field control module applies a first voltage signal having a first pulse width and a first frequency between the first electrode and the second electrode, so that the food and liquid between the first electrode and the second electrode are in a first electric field strength; When the cooking appliance is in the cooking stage after the water absorption stage, the pulse electric field control module applies a second voltage signal having a second pulse width and a second frequency between the first electrode and the second electrode, so as to increase the temperature in the cooking cavity to heat the food and liquid, wherein the power of the second voltage signal is greater than the power of the first voltage signal; When the detection parameter in the cooking cavity reaches a set threshold, the application of the second voltage signal to the first electrode and the second electrode is stopped.

2. The method according to claim 1, characterized in that The step of stopping applying the second voltage signal to the first electrode and the second electrode when the detection parameter in the cooking cavity reaches a set threshold comprises: When the current between the first electrode and the second electrode is lower than a set first current threshold, or when the temperature in the cooking cavity is higher than a set temperature threshold, the second voltage signal is stopped from being applied to the first electrode and the second electrode.

3. The method according to claim 1, characterized in that The method further comprises: When the cooking appliance is in a water absorption stage, obtaining a first temperature in the cooking cavity; When the first temperature is higher than a set first temperature threshold, controlling the pulse electric field control module to stop applying the first voltage signal to the first electrode and the second electrode, wherein the value range of the first temperature threshold is 40 degrees Celsius to 70 degrees Celsius; When it is determined that the first temperature drops to within the first temperature threshold and the working time of the water absorption stage does not reach the first time, the pulse electric field control module is controlled to apply the first voltage signal to the first electrode and the second electrode.

4. The method according to claim 3, characterized in that When the cooking appliance is in the water absorption stage, the method further comprises: The cooking appliance is controlled to be in the water absorption stage and last for the first preset time period, wherein the first time period is less than 10 minutes.

5. The method according to claim 1, characterized in that The first pulse width is W1 microseconds, the first frequency is F1 working times per minute, the first electric field strength is E1 kilovolts per centimeter, and the first time length is greater than 1 minute and less than 5 minutes.

6. The method according to claim 1, characterized in that The cooking stage includes a temperature rising stage and a boiling keeping stage. When the cooking appliance is in the cooking stage after the water absorption stage, the pulse electric field control module applies a second voltage signal with a second pulse width and a second frequency between the first electrode and the second electrode to increase the temperature in the cooking cavity to heat the food and liquid, including: When the cooking appliance is in the cooking stage after the water absorption stage, the pulse electric field control module acquires a second temperature in the cooking cavity; Applying a second pulse width having a first value, a second frequency having a first value, and a second voltage signal that causes food and water between the first electrode and the second electrode to be in a second electric field strength having a first value to the first electrode and the second electrode, so as to control the cooking appliance to be in a heating stage; When it is determined that the second temperature value is greater than a set second temperature threshold, applying a second pulse width having a second value, a second frequency having a second value, and a second voltage signal that causes the food and water between the first electrode and the second electrode to be in a second electric field strength having a second value to the first electrode and the second electrode, so as to control the cooking appliance to be in a boiling holding stage; The second temperature threshold has a value range of 85 degrees Celsius to 96 degrees Celsius, and the power of the second voltage signal in the boiling maintenance stage is less than the power of the second voltage signal in the heating stage.

7. The method according to claim 6, characterized in that The second pulse width having the first value is W 21 microseconds, the second frequency with the first value is the number of operations per minute F 21 , the second electric field strength with the first value is E 21 Kilovolts per centimeter, 10,000 <E 21 ×F 21 ×W 21 <30000; The second pulse width with the second value is W 22 microseconds, the second frequency with the second value is the number of operations per minute F 22 , the second electric field strength with the second value is E 22 kilovolts per centimeter, where and E 21 ×F 21 ×W 21 <E 22 ×F 22 ×W 22 .

8. The method according to claim 1, characterized in that The first electrode and the second electrode are arranged relatively spaced apart along left and right sides of the cooking cavity.

9. The method according to claim 8, characterized in that Before the step of applying a first voltage signal having a first pulse width and a first frequency to the first electrode and the second electrode by the pulse electric field control module, the method further includes: The pulse electric field control module applies an initial voltage signal to the first electrode and the second electrode in response to a start operation of a cooking program; When current is detected between the first electrode and the second electrode, a first voltage signal having a first pulse width and a first frequency is applied to the first electrode and the second electrode so that the food and water between the first electrode and the second electrode are under a first electric field strength.

10. The method according to claim 1, characterized in that The first electrode is connected to the top of the cooking cavity through a retractable rod, a surface of the first electrode is provided with a plurality of through holes, and the second electrode is provided at the bottom of the cooking cavity. The method further comprises: During the water absorption stage, if the pulse electric field control module detects that there is no current signal between the first electrode and the second electrode, the retractable rod is controlled to extend to a preset length to drive the first electrode to move downward.

11. The method according to claim 10, characterized in that The pulse electric field control module stops applying the second voltage signal to the first electrode and the second electrode when detecting that the current flowing through the first electrode and the second electrode is lower than a set current threshold, including: When the pulse electric field control module detects that the current flowing through the first electrode and the second electrode is lower than a set current threshold, the pulse electric field control module controls the retractable rod to extend to a preset length to drive the first electrode to move downward; When the current flowing through the first electrode and the second electrode is lower than a set current threshold, determining whether the total length of the telescopic rod is greater than a set length threshold, or determining whether a pressure value collected by a pressure sensor embedded at the connection between the first electrode and the telescopic rod is greater than a set pressure threshold; If the total length is greater than a set length threshold, or the pressure value is greater than a set pressure threshold, then application of the second voltage signal to the first electrode and the second electrode is stopped.

12. The method according to claim 10, characterized in that The pulse electric field control module applies a first voltage signal having a first pulse width and a first frequency to the first electrode and the second electrode so that the food and water between the first electrode and the second electrode are under a first electric field strength, including: The pulse electric field control module controls the retractable rod to retract in response to the start operation of the cooking program, so as to drive the first electrode to move upward to a specified highest position; applying an initial voltage signal to the first electrode and the second electrode; Controlling the retractable rod to lengthen so as to drive the first electrode to move downward; When it is determined that current exists between the first electrode and the second electrode, a first voltage signal having a first pulse width and a first frequency is applied to the first electrode and the second electrode so that the food and water between the first electrode and the second electrode are under a first electric field strength.

13. The method according to claim 12, characterized in that After controlling the retractable rod to lengthen so as to drive the first electrode to move downward, the method further includes: When it is detected that the current flowing through the first electrode and the second electrode is greater than the set short-circuit current threshold, the alarm module is controlled to output prompt information for instructing to add food and water.

14. A cooking utensil, characterized in that: The cooking appliance includes a pulse electric field control module, a cooking cavity, a first electrode, and a second electrode. The first electrode and the second electrode are arranged relatively spaced apart in the cooking cavity. The pulse electric field control module is electrically connected to the first electrode and the second electrode respectively. The pulse electric field control module is used to execute the method described in any one of claims 1 to 13.

15. A storage medium, characterized in that: A computer program is stored thereon, wherein when the computer program is executed by a processor, the method according to any one of claims 1 to 13 is implemented.

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