Steam oven and method of controlling the same

Abstract

The application belongs to the technical field of household appliances and provides a steam oven and a control method thereof. The steam oven comprises a box body, a heating assembly, a steam generator and a control unit. The control unit is configured to execute a first cooking task, the first cooking task is configured to control the heating assembly and the steam generator to operate so that the temperature in the cooking cavity is at a first temperature and the humidity in the cooking cavity is at a first humidity; after a first preset time length, a second cooking task is executed, the second cooking task is configured to control the heating assembly and the steam generator to operate so that the temperature in the cooking cavity is at a second temperature and the humidity in the cooking cavity is at a second humidity; after a second preset time length, a third cooking task is executed, the third cooking task is configured to control the heating assembly to operate so that the temperature in the cooking cavity is at a third temperature. Through the above method, the content of resistant starch in food can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of home appliance technology. More specifically, it relates to a steam oven and its control method. Background Technology

[0002] With the development of society and economy, the issue of national dietary health has become increasingly prominent, and chronic diseases such as diabetes caused by improper diet have attracted great attention from consumers and society.

[0003] Starchy foods (such as rice and potatoes) are important staple foods for people. When staple foods are cooked, they are hydrolyzed into glucose quickly, have a high digestion and absorption rate, and are particularly prone to causing a rise in blood sugar.

[0004] Starch is classified into rapidly digestible starch, slowly digestible starch, and resistant starch based on its digestive properties. Resistant starch, also known as indigestible starch, is not absorbed in the small intestine and does not cause a rise in blood sugar. Therefore, how to increase the resistant starch content of food during cooking, thereby mitigating the risk of high blood sugar, has become an urgent problem to be solved. Summary of the Invention

[0005] This application provides a steam oven and its control method to enhance the resistant starch content in food ingredients.

[0006] In a first aspect, embodiments of this application provide a steam oven, comprising: a housing, the housing having a cooking cavity;

[0007] A heating element is configured to heat the food in the cooking cavity;

[0008] A steam generator is configured to provide a steam flow to the cooking chamber;

[0009] A temperature sensor is configured to detect the temperature in the cooking cavity;

[0010] A humidity sensor is configured to detect the humidity in the cooking cavity;

[0011] A control unit connected to the heating assembly, the steam generator, the temperature sensor, and the humidity sensor is configured to:

[0012] Perform a first cooking task, which is configured to control the operation of the heating assembly and the steam generator to bring the temperature in the cooking chamber to a first temperature and the humidity in the cooking chamber to a first humidity; the first temperature and the first humidity are used to heat and absorb water from the starch in the food.

[0013] After a first preset time, a second cooking task is executed, which is configured to control the operation of the heating component and the steam generator to bring the temperature in the cooking chamber to a second temperature and the humidity in the cooking chamber to a second humidity; the second temperature and the second humidity are used to convert at least a portion of the starch in the food into resistant starch;

[0014] After a second preset time, a third cooking task is performed, which is configured to control the operation of the heating component to bring the temperature in the cooking chamber to a third temperature; the third temperature is used to stabilize and mature the resistant starch.

[0015] In some embodiments, the control unit is configured to:

[0016] When performing the first cooking task, if the temperature in the cooking cavity is determined to be at a first temperature based on the temperature reported by the temperature sensor, the heating component is stopped.

[0017] and / or;

[0018] Based on the humidity reported by the temperature and humidity sensor, when the humidity in the cooking cavity is determined to be at the first humidity level, the steam generator stops operating.

[0019] In some embodiments, after the heating assembly and / or the steam generator are stopped, the temperature and / or humidity in the cooking cavity are detected based on the humidity and / or humidity reported by the temperature sensor and / or the humidity sensor.

[0020] When the temperature in the cooking cavity is determined to have dropped to the target temperature, the heating assembly is restarted; the target temperature is determined based on the first temperature.

[0021] And / or,

[0022] When the humidity in the cooking cavity is determined to have decreased to the target humidity, the steam generator is restarted; the target humidity is determined based on the first humidity.

[0023] In some embodiments, the control unit is configured to:

[0024] When the second cooking task begins, the heating component is stopped.

[0025] or,

[0026] During the execution of the third cooking task, the steam generator is stopped.

[0027] In some embodiments, the steam oven further includes: a fan and an air duct cavity, the fan being disposed in the air duct cavity, the air duct cavity communicating with the cooking cavity, and the control unit being configured to:

[0028] When performing the third cooking task, the fan is operated to exhaust the steam flow in the cooking chamber to the outside through the air duct cavity.

[0029] In some embodiments, the control unit is configured to:

[0030] Before performing the first cooking task, a preheating task is performed, which is configured to control the operation of the heating components and the steam generator to bring the temperature in the cooking chamber to a fourth temperature and the humidity in the cooking chamber to a fourth humidity.

[0031] In some embodiments, the control unit is configured to:

[0032] Get cooking time;

[0033] Based on the cooking time, a first preset time, a second preset time, and a third preset time are determined; the sum of the first preset time and the second preset time is less than or equal to the third preset time.

[0034] In some embodiments, the control unit is configured to:

[0035] The first temperature and the first humidity are determined from the first temperature range and the first humidity range based on the first preset duration;

[0036] The second temperature and the second humidity are determined from the second temperature range and the second humidity range according to the second preset duration;

[0037] The third temperature and the third humidity are determined from the third temperature range and the third humidity range based on the third preset duration.

[0038] In some embodiments, the control unit is configured to:

[0039] Obtain the cooking temperature;

[0040] The third temperature is determined based on the cooking temperature.

[0041] Secondly, embodiments of this application provide a control method for a steam oven, the steam oven comprising:

[0042] The box body has a cooking cavity;

[0043] A heating element is configured to heat the food in the cooking cavity;

[0044] A steam generator is configured to provide a steam flow to the cooking chamber;

[0045] A temperature sensor is configured to detect the temperature in the cooking cavity;

[0046] A humidity sensor is configured to detect the humidity in the cooking cavity;

[0047] The method includes:

[0048] Perform a first cooking task, which is configured to control the operation of the heating assembly and the steam generator to bring the temperature in the cooking chamber to a first temperature and the humidity in the cooking chamber to a first humidity; the first temperature and the first humidity are used to heat and absorb water from the starch in the food.

[0049] After a first preset time, a second cooking task is executed, which is configured to control the operation of the heating component and the steam generator to bring the temperature in the cooking chamber to a second temperature and the humidity in the cooking chamber to a second humidity; the second temperature and the second humidity are used to convert at least a portion of the starch in the food into resistant starch;

[0050] After a second preset time, a third cooking task is performed, which is configured to control the operation of the heating component to bring the temperature in the cooking chamber to a third temperature; the third temperature is used to stabilize and mature the resistant starch.

[0051] Thirdly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor (control unit), are used to implement the first aspect and / or various possible implementations of the first aspect.

[0052] Fourthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the first aspect and / or various possible implementations of the first aspect.

[0053] The steam oven and its control method provided in this application embodiment can provide a good environment for the conversion of starch in food during the cooking process by executing the first cooking task, the second cooking task and the third cooking task. This allows the starch in the food to be converted into slow-digesting starch and resistant starch as much as possible, thereby reducing the impact of starch on the user's blood sugar and improving the user's health. Attached Figure Description

[0054] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0055] Figure 1 This application provides a schematic diagram of the structure of a steam oven;

[0056] Figure 2 A schematic diagram of the structure of another steam oven provided in this application;

[0057] Figure 3 A flowchart illustrating the control method for a steam oven provided in this application;

[0058] Figure 4 A flowchart illustrating another control method for a steam oven provided in this application;

[0059] Figures 5-8 A schematic diagram illustrating the process of a specific control method for a steam oven provided in this application;

[0060] Figure 9 This is a schematic diagram of the control device for a steam oven provided in this application;

[0061] Figure 10 A schematic diagram of the control device for another steam oven provided in this application.

[0062] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0063] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0064] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0065] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0066] The terms "first" and "second" are configured for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0067] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0068] As mentioned earlier, staple food ingredients are cooked and then hydrolyzed into glucose in the body at a relatively fast rate, resulting in a high rate of digestion and absorption. This can easily cause a rise in blood sugar levels, which is detrimental to the user's health.

[0069] In view of this, this application provides a steam oven and its control method, which modifies some of the starch in high-starch foods into slow-digestible starch and resistant starch by changing or controlling the humidity, temperature and cooking time during cooking, thereby slowing down the absorption of sugar after consumption, improving blood sugar regulation and enhancing the user's health.

[0070] The steam oven provided in this application can be a regular steam oven or a microwave steam oven, etc., and this embodiment is not limited thereto. The steam oven can be a freestanding steam oven, or it can be a built-in steam oven.

[0071] Figure 1 This is a schematic diagram of the structure of the steam oven provided in the embodiments of this application. Figure 2 This is a schematic diagram of the structure of the steam oven provided in this embodiment of the application after removing part of the outer shell.

[0072] In some embodiments, the steam oven includes a housing 100 having a cooking cavity for cooking food.

[0073] In some embodiments, the housing 100 includes an outer shell 110. The outer shell 110 serves both a protective and aesthetic purpose.

[0074] The housing 110 has a receiving cavity. The receiving cavity is used to provide space for the installation of other components.

[0075] In some embodiments, the steam oven includes an inner cavity 120. The inner cavity 120 is used to hold food.

[0076] The inner liner 120 is located in the receiving cavity. The inner liner 120 has a cooking cavity.

[0077] In some embodiments of this application, the steam oven includes a door 200.

[0078] The door 200 is rotatably connected to the outer shell 110. The door 200 rotates relative to the outer shell 110, thereby opening or closing the receiving cavity.

[0079] In some embodiments, the door 200 is an automatic door, thereby providing customers with a more intelligent product experience.

[0080] In some embodiments, the steam oven includes a heating system for heating food in the cooking cavity.

[0081] In some embodiments, the heating system includes a heating component (e.g., a heating element).

[0082] The heating element can be inserted into the inner liner. The heating element can be located at the bottom of the inner liner, at the back of the inner liner, etc. This application embodiment does not limit the position of the heating element.

[0083] In some embodiments, the steam oven includes a rack 300 disposed within the cooking cavity and on the side wall of the inner liner.

[0084] In some embodiments, the oven includes a controller.

[0085] In some embodiments, the controller may be located between the inner liner 120 and the outer shell 110.

[0086] In some embodiments, the steam oven includes a steam system 400, which can be used to deliver steam into the inner cavity 120.

[0087] The steam system 400 is located in the receiving cavity.

[0088] See Figure 2 As shown, in some embodiments, the steam system 400 includes a water tank 410. The water tank 410 is used to hold liquids, such as water or descaling agents.

[0089] In some embodiments, the water box 410 may be located on one side of the inner liner 120, for example, on the top of the inner liner 120.

[0090] In some embodiments, the inner liner 120 is provided with a top plate, which is connected to the outer shell 110, and the water box 410 is connected to the top plate.

[0091] In some embodiments, the steam system 400 includes a steam generator 420. The steam generator 420 is used to generate steam and deliver the steam to the inner liner 120.

[0092] In some embodiments, the steam generator 420 may be located on one side of the inner liner 120, for example, on the back of the inner liner 120.

[0093] In some embodiments, the back of the inner liner 120 is provided with a back plate, which is connected to the outer shell 110, and the steam generator 420 is connected to the back plate.

[0094] In some embodiments, the steam system 400 includes a water inlet pump that is connected to a water tank 410 and a steam generator 420, and the water inlet pump is used to deliver water from the water tank 410 to the steam generator 420.

[0095] In some embodiments, the steam system 400 includes a water vapor separator that is connected to the steam generator 420 and the inner tank 120.

[0096] The steam generated by the steam generator 420 enters the water-steam separator, which can separate water and steam, allowing only dry steam to enter the inner tank 120.

[0097] In some embodiments, the steam system 400 includes a return water pump connected to a water tank 410 and a steam generator 420. The return water pump is used to recover residual water in the steam generator 420 back to the water tank 410. This effectively prevents water from remaining in the pipeline for extended periods, thus preventing bacterial growth.

[0098] In some embodiments, the steam oven includes an air duct structure 500. The air duct structure 500 can be used to exhaust steam from the cooking cavity to the outside of the steam oven.

[0099] The air duct structure 500 is located in the receiving cavity.

[0100] In some embodiments, the air duct structure 500 is configured with an air duct cavity. The air duct cavity communicates with the outside of the housing 110.

[0101] The air duct cavity is connected to the cooking cavity, and the steam in the cooking cavity flows to the outside of the steam oven through the air duct cavity.

[0102] In some embodiments, a fan is provided in the air duct cavity. When the fan is running, it draws out the steam in the cooking cavity and discharges it to the outside of the oven through the air duct cavity.

[0103] Figure 3 This is a flowchart illustrating a control method for a steam oven provided in an embodiment of this application. The executing entity in this embodiment can be a steam oven or a control unit of a steam oven, such as... Figure 3 As shown, the control method includes the following steps:

[0104] S301. Execute a first cooking task, the first cooking task being configured to control the operation of the heating component and the steam generator to make the temperature in the cooking chamber at a first temperature and the humidity in the cooking chamber at a first humidity; the first temperature and the first humidity are used to heat and absorb water from the starch in the food.

[0105] In some embodiments, the food ingredient is a starchy food, such as grains, noodles, or root vegetables.

[0106] In some embodiments, after receiving a user's selection of a target cooking mode, the control unit can execute the method provided in this application embodiment. If the user selects a non-target cooking mode, it can execute a normal cooking process. The target cooking mode is used to convert the starch in the ingredients into resistant starch as much as possible. For example, the target cooking mode can be called an anti-sugar (cooking) mode, a sugar-reducing (cooking) mode, etc.

[0107] In some embodiments, the user can select the target cooking mode on the control panel of the steam oven, or the user can remotely select the target cooking mode in the steam oven through a terminal device, or the user can remotely select the target cooking mode in the steam oven through voice control. This application embodiment does not limit this.

[0108] In some embodiments, the control unit executes the first cooking task after receiving a user's selection of a target cooking mode and determining that the user has placed ingredients in the food.

[0109] For example, when performing the first cooking task, the control unit can control the heating element in the steam oven to start operating to increase the temperature in the cooking cavity, and control the steam generator in the steam oven to start operating to increase the humidity in the cooking cavity. Optionally, both the heating element and the steam generator can operate at corresponding preset power.

[0110] In some embodiments, after the heating assembly and steam generator start operating, the control unit can detect the temperature and humidity in the cooking cavity by means of the temperature reported by the temperature sensor and the humidity reported by the humidity sensor.

[0111] In some embodiments, when the control unit determines that the temperature in the cooking cavity is at a first temperature based on the temperature reported by the temperature sensor, and determines that the humidity in the cooking cavity is at a first humidity based on the humidity reported by the humidity sensor, it can control the heating components and steam generator to stop operating. When the humidity in the cooking cavity is at the first humidity and the temperature in the cooking cavity is at the first temperature, the starch granules in the food are heated and begin to absorb water and expand, and the starch begins to gelatinize. Optionally, the process by which the control unit performs the first cooking task can also be referred to as the starch water absorption process.

[0112] For example, the first temperature can be any temperature within a first temperature range, such as 45℃-140℃ or 60℃. The first humidity can be any humidity within a first humidity range, such as 20%-80% or 30%. This application does not limit the specific values ​​of the first temperature and the first humidity in its embodiments.

[0113] Optionally, the control unit may use the default first temperature and first humidity when performing the first cooking task.

[0114] In some embodiments, when the control unit determines that the temperature in the cooking cavity is at a first temperature based on the temperature reported by the temperature sensor, it can control the heating component to stop operating; or, when the control unit determines that the humidity in the cooking cavity is at a first humidity based on the humidity reported by the humidity sensor, it can control the steam generator to stop operating.

[0115] In some embodiments, after the control unit stops operating the heating assembly and / or the steam generator, it continues to detect the temperature and / or humidity in the cooking cavity based on the humidity and / or humidity reported by the temperature sensor and / or the humidity sensor.

[0116] When the temperature in the cooking cavity is determined to have decreased to the target temperature, the heating component is restarted, and / or, when the humidity in the cooking cavity is determined to have decreased to the target humidity, the steam generator is restarted, so that the temperature and humidity in the cooking cavity are maintained at the first temperature and the first humidity. The target temperature is determined based on the first temperature and is less than the first temperature. For example, the target temperature can be 90% of the first temperature, or 85% of the first temperature, etc. The target humidity is determined based on the first humidity and is less than the first humidity. For example, the target humidity can be 90% of the first humidity, or 85% of the first humidity, etc. This application does not limit the specific values ​​of the target temperature and target humidity.

[0117] The control unit can repeatedly execute the steps described above within a first preset time period: when the temperature in the cooking cavity is at a first temperature, stop the operation of the heating component and / or when the humidity in the cooking cavity is at a first humidity, stop the operation of the steam generator; when it is determined that the temperature in the cooking cavity has dropped to the target temperature, restart the operation of the heating component; and / or when it is determined that the humidity in the cooking cavity has dropped to the target humidity, restart the operation of the steam generator, so that the humidity in the cooking cavity is maintained at the first humidity and the first temperature, so that the starch granules in the food are well heated and absorb water.

[0118] After a first preset time, the control unit ends the execution of the first cooking task and begins the execution of the second cooking task shown in S302.

[0119] S302. After a first preset time, a second cooking task is executed. The second cooking task is configured to control the operation of the heating component and the steam generator to make the temperature in the cooking chamber reach a second temperature and the humidity in the cooking chamber reach a second humidity. The second temperature and the second humidity are used to convert at least a portion of the starch in the food into resistant starch.

[0120] In some embodiments, during the execution of the second cooking task, the control unit controls the operation of the heating assembly and the steam generator to maintain the temperature in the cooking chamber at a second temperature and the humidity in the cooking chamber at a second humidity. When the humidity in the cooking chamber is maintained at the second humidity and the temperature in the cooking chamber is maintained at the second temperature, starch begins to denature, and some starch is converted into slowly digestible starch and resistant starch. Optionally, the process of the control unit performing the second cooking task can also be referred to as the starch denaturation process.

[0121] For example, the second temperature can be any temperature within a second temperature range, such as 45℃-140℃ or 60℃. The second humidity can be any humidity within a second humidity range, such as 60%-80% or 60%. This application does not limit the specific values ​​of the second temperature and the second humidity in its embodiments.

[0122] In some embodiments, during the execution of a second cooking task, when the control unit determines that the temperature in the cooking cavity is at a second temperature based on the temperature reported by the temperature sensor, and determines that the humidity in the cooking cavity is at a second humidity based on the humidity reported by the humidity sensor, the control unit can control the heating components and the steam generator to stop operating.

[0123] In some embodiments, when the control unit determines that the temperature in the cooking cavity is at a second temperature based on the temperature reported by the temperature sensor, it can control the heating component to stop operating; or, when the control unit determines that the humidity in the cooking cavity is at a second humidity based on the humidity reported by the humidity sensor, it can control the steam generator to stop operating.

[0124] In some embodiments, after the control unit stops operating the heating assembly and / or the steam generator, it continues to detect the temperature and / or humidity in the cooking cavity based on the humidity and / or humidity reported by the temperature sensor and / or the humidity sensor.

[0125] When the temperature in the cooking cavity is determined to have decreased to the target temperature corresponding to the second cooking stage, the heating component is restarted, and / or, when the humidity in the cooking cavity is determined to have decreased to the target humidity corresponding to the second cooking stage, the steam generator is restarted, so that the temperature and humidity in the cooking cavity are maintained at the second temperature and the second humidity. The target temperature is determined based on the second temperature and is less than the second temperature. For example, the target temperature can be 90% of the second temperature, or 85% of the second temperature, etc. The target humidity is determined based on the second humidity and is less than the second humidity. For example, the target humidity can be 90% of the second humidity, or 85% of the second humidity, etc. This application does not limit the specific values ​​of the target temperature and the target humidity.

[0126] In some embodiments, the second temperature is less than or equal to the first temperature. Therefore, when the control unit starts performing the second cooking task, the temperature in the cooking cavity is usually greater than or equal to the second temperature. Thus, in order to reduce the energy consumption of the steam oven, the control unit can turn off the heating component when starting to perform the second cooking task.

[0127] It should be understood that during the execution of the second cooking task, the control unit may repeatedly stop and start the heating element and steam generator based on the temperature and humidity reported by the temperature sensor and humidity sensor, so that the temperature and humidity in the cooking cavity are maintained at the second temperature and the second humidity during the execution of the second cooking task.

[0128] After the second preset time, the control unit ends the execution of the second cooking task and begins the execution of the second cooking task shown in S303.

[0129] S303. After a second preset time, a third cooking task is executed, wherein the third cooking task is configured to control the operation of the heating component to bring the temperature in the cooking chamber to a third temperature; the third temperature is used to stabilize and mature the resistant starch.

[0130] In some embodiments, after the second cooking task, the starch in the ingredients that can be converted into resistant starch has been basically completed. At this time, the control unit can perform a third cooking task to make the resistant starch in the ingredients qualitative and prevent further changes in properties, while making the starch mature, thereby making the ingredients mature.

[0131] Since the conversion of resistant starch is basically completed when the third cooking task is performed, the humidity in the cooking chamber is no longer a key concern during the cooking process. Therefore, when the third cooking task is started, the control unit can stop the steam generator and does not detect the humidity in the cooking chamber. In other words, humidity is not controlled during the execution of the third cooking task.

[0132] For example, the third temperature can be any temperature within a third temperature range, such as 140℃-270℃, or 200℃. This application does not limit the specific values ​​of the third temperature and the third humidity.

[0133] In some embodiments, during the execution of a third cooking task, the control unit determines that the temperature in the cooking cavity is at a third temperature based on the temperature reported by the temperature sensor, thereby enabling the heating component to stop operating.

[0134] In some embodiments, after the heating assembly stops operating, the control unit continues to detect the temperature in the cooking cavity based on the humidity reported by the temperature sensor.

[0135] When the temperature in the cooking cavity drops to the target temperature corresponding to the third cooking stage, the heating component is restarted to maintain the temperature and humidity in the cooking cavity at the third temperature. This target temperature is determined based on the third temperature and is less than the third temperature. For example, the target temperature can be 90% of the third temperature, or 85% of the third temperature, etc. This application does not limit the specific value of the target temperature in its embodiments.

[0136] It should be understood that during the execution of the third cooking task, the control unit can repeatedly stop and start the heating component based on the temperature reported by the temperature sensor, so as to maintain the temperature in the cooking cavity at the third temperature during the execution of the third cooking task. After the third preset time, the execution of the third cooking task ends, and the current cooking process ends.

[0137] The control method for the steam oven provided in this application embodiment, by executing the first cooking task, the second cooking task, and the third cooking task, can provide a good environment for the conversion of starch in the food during the cooking process, so that the starch in the food is converted into slow-digesting starch and resistant starch as much as possible (i.e., increasing its content), thereby reducing the impact of starch on the user's blood sugar and improving the user's health.

[0138] exist Figure 3 Based on the illustrated embodiment, the following is combined with Figure 4 The control method for the steam oven provided in the embodiments of this application will be further described.

[0139] Figure 4 A flowchart illustrating the control method for the steam oven provided in this application embodiment. Figure 2 ,like Figure 4 As shown, it includes:

[0140] S401, Obtain cooking mode.

[0141] In some embodiments, if the user selects the target cooking mode, the control unit can execute the control method provided in the embodiments of this application; if the user selects a non-target cooking mode, the conventional cooking process is executed.

[0142] S402, Obtain cooking time and / or target cooking temperature.

[0143] In some embodiments, cooking time may refer to the duration of the entire cooking process. The target cooking temperature may be the temperature that needs to be maintained in the cooking chamber when performing the third cooking task, i.e., the aforementioned third temperature.

[0144] The control unit can obtain the cooking time and / or target cooking temperature input by the user through the control panel of the steam oven. By inputting the cooking time, the user can flexibly adjust the cooking time. By inputting the target cooking task, the user can steam or bake the food to the desired state. For example, if the user wants the food to be baked to a crispier state, they can set the target cooking temperature higher.

[0145] In some embodiments, the cooking time and / or target cooking temperature may also be a preset temperature and / or a preset time. That is, if the user does not input the cooking time and / or target cooking temperature, the control unit may use a preset time as the cooking time and / or use a preset temperature as the target cooking temperature.

[0146] In other words, S402 is an optional step.

[0147] S403. Determine the first preset time, the second preset time, and the third preset time based on the cooking time.

[0148] In some embodiments, after determining the cooking time, the control unit may use a preset algorithm or model to allocate the cooking time to determine the execution time corresponding to each subsequent cooking task, namely, the first preset time, the second preset time, and the third preset time.

[0149] In some embodiments, the sum of the first preset duration and the second preset duration is less than or equal to the third preset duration.

[0150] Optionally, the execution time of each subsequent cooking task can be adjusted according to the current state of the ingredients.

[0151] S404, Perform preheating task.

[0152] In some embodiments, after the control unit determines the first preset duration, the second preset duration, and the third preset duration, it can start to perform a preheating task to raise the temperature and humidity in the cooking cavity to a fourth temperature and a fourth humidity, so as to better cook the ingredients.

[0153] In some embodiments, during the preheating process, the control unit may control the operation of the heating components and the steam generator to bring the temperature in the cooking chamber to a fourth temperature and the humidity in the cooking chamber to a fourth humidity.

[0154] For example, the fourth temperature can be any temperature within a fourth temperature range, such as 45℃-65℃ or 50℃. The fourth humidity can be any humidity within a fourth humidity range, such as 60%-80% or 60%. This application does not limit the specific values ​​of the fourth temperature and fourth humidity.

[0155] In some embodiments, when a preset task is completed, the control unit can preheat the user through the lifting unit of the steam oven to complete the lifting, so that the user can put food into the steam oven.

[0156] S405, Perform the first cooking task.

[0157] S406, Perform the second cooking task.

[0158] S407, Perform the third cooking task.

[0159] In this embodiment of the application, the specific implementation of steps S405-407 is the same as... Figure 3 The specific implementation methods of steps S301-S303 are similar, and will not be repeated here.

[0160] In some embodiments, since the main function of the third cooking task is to set and mature the starch, in order to further improve the steaming and baking effect on the ingredients, the control unit can also control the fan to start running during the execution of the third cooking task. The fan will then vent the steam in the cooking chamber to the outside of the chamber through the air duct where it is located, thereby reducing the humidity in the cooking chamber and improving the baking effect on the ingredients. Optionally, the control unit can run the fan throughout the entire process of executing the third cooking task, or it can control the fan to run for a preset duration. This embodiment does not limit the duration of fan operation.

[0161] Based on the above embodiments, the following is combined with Figures 5-8 The control method of the steam oven provided in this application will be described with reference to a specific embodiment.

[0162] refer to Figure 5 After the user selects the resistant sugar steaming mode on the operating interface and sets the target cooking temperature and cooking time, the control unit initiates a preheating phase, activating the rear heating element and steam generator. The preheating phase ends when the temperature in the cooking chamber reaches T0 (45-65℃) and the humidity reaches R0 (60-80%). After the user adds the ingredients, the first stage begins, reaching T1 (45℃-140℃) and R1 (40-80%). When both temperature and humidity reach their preset values, the rear heating element and steam generator stop operating. When the temperature and humidity are ≤10% of their preset values, the rear heating element and steam generator resume operation. In the first stage, the starch granules are heated and begin to absorb water and expand, preparing for the next stage of denaturation. If the temperature is too high at this stage, resistant starch will not be produced.

[0163] After the first stage, the second stage begins. The back heating element is turned off, and the steam generator and humidity sensor are activated. The temperature reaches T1 (45℃-140℃), and the humidity reaches R1 (60-80%). When the humidity reaches the preset value, the steam generator stops operating. When the humidity is ≤10% of the preset value, the steam generator restarts. In the second stage, the steam humidity is increased while maintaining precise control of both humidity and temperature to provide sufficient conditions for starch denaturation. Some starch will transform into slow-digesting starch and resistant starch. Slow-digesting starch and resistant starch can lower the user's glycemic index and have a significant effect on improving chronic diseases such as diabetes.

[0164] After the second stage, the third stage begins, with the temperature fixed at T3 (140-270℃). The back heating element and fan are activated, while the humidity sensor and steam generator are turned off. When the temperature reaches the preset value, the back heating element stops operating. When the temperature is ≤10% of the preset value, the back heating element starts operating again. In the third stage, starch denaturation ends, and thorough heating allows the starch to settle and mature.

[0165] refer to Figure 6 and Figure 7 From the first stage to the second stage, the temperature in the cooking cavity gradually decreases while the humidity gradually increases; from the second stage to the third stage, the temperature in the cooking cavity gradually increases while the humidity gradually decreases. Figure 8 It can be seen that under suitable temperature conditions, the content of converted resistant starch in each gram of starch can be maintained at a high level.

[0166] Figure 9 This is a schematic diagram of the structure of a control device 90 for a steam oven provided in an embodiment of this application, as shown below. Figure 9 As shown, it includes:

[0167] A first processing module 901 is configured to perform a first cooking task, wherein the first cooking task is configured to control the operation of the heating component and the steam generator to make the temperature in the cooking chamber at a first temperature and the humidity in the cooking chamber at a first humidity; the first temperature and the first humidity are used to heat and absorb water from the starch in the food.

[0168] The second processing module 902 is configured to execute a second cooking task after a first preset time period. The second cooking task is configured to control the operation of the heating component and the steam generator to make the temperature in the cooking chamber reach a second temperature and the humidity in the cooking chamber reach a second humidity. The second temperature and the second humidity are used to convert at least a portion of the starch in the food into resistant starch.

[0169] The third processing module 903 is used to execute a third cooking task after a second preset time period. The third cooking task is configured to control the operation of the heating component to bring the temperature in the cooking chamber to a third temperature. The third temperature is used to stabilize and mature the resistant starch.

[0170] Optionally, the first processing module 901 is further configured to, when performing the first cooking task, stop operating the heating component when the temperature in the cooking cavity is at a first temperature based on the temperature reported by the temperature sensor; and / or, stop operating the steam generator when the humidity in the cooking cavity is at a first humidity based on the humidity reported by the temperature and humidity sensor.

[0171] Optionally, the first processing module 901 is further configured to, after stopping the operation of the heating component and / or the steam generator, detect the temperature and / or humidity in the cooking cavity based on the humidity and / or humidity reported by the temperature sensor and / or the humidity sensor; when it is determined that the temperature in the cooking cavity has dropped to a target temperature, restart the operation of the heating component; the target temperature is determined based on the first temperature; and / or, when it is determined that the humidity in the cooking cavity has dropped to a target humidity, restart the operation of the steam generator; the target humidity is determined based on the first humidity.

[0172] Optionally, the second processing module 902 is also configured to stop the heating component from operating when the second cooking task begins.

[0173] Optionally, the third processing module 903 is also configured to stop the operation of the steam generator during the execution of the third cooking task.

[0174] Optionally, the third processing module 903 is also configured to operate the fan during the execution of the third cooking task to exhaust the steam flow in the cooking chamber to the outside through the air duct cavity.

[0175] Optional, such as Figure 10 As shown, the control device 90 also includes a preheating module 900.

[0176] The preheating module 900 is used to perform a preheating task before performing the first cooking task, the preheating task being configured to control the operation of the heating components and the steam generator to bring the temperature in the cooking chamber to a fourth temperature and the humidity in the cooking chamber to a fourth humidity.

[0177] Optionally, the preheating module 900 is also used to acquire the cooking time; and to determine the first preset time, the second preset time, and the third preset time based on the cooking time; wherein the sum of the first preset time and the second preset time is less than or equal to the third preset time.

[0178] Optionally, the preheating module 900 is further configured to determine a first temperature and a first humidity from a first temperature range and a first humidity range according to the first preset duration; determine a second temperature and a second humidity from a second temperature range and a second humidity range according to the second preset duration; and determine a third temperature and a third humidity from a third temperature range and a third humidity range according to the third preset duration.

[0179] Optionally, the preheating module 900 is also used to acquire the cooking temperature and determine the third temperature based on the cooking temperature.

[0180] The control device for the steam oven provided in this application embodiment can execute the control method of the steam oven shown in any of the above embodiments. Its principle and technical effect are similar, and will not be described again here.

[0181] It should be noted that the division of the various modules in the above device is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. These modules can be implemented entirely in software via processing element calls; they can be fully implemented in hardware; or some modules can be implemented in software via processing element calls, while others are implemented in hardware. Each module can be a separate processing element, or it can be integrated into a chip within the device. Alternatively, it can be stored as program code in the device's memory, and its functions can be called and executed by a processing element. Furthermore, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element here can be an integrated circuit with signal processing capabilities. During implementation, each step of the above method or each of the above modules can be completed through integrated logic circuits in the processor element or through software instructions.

[0182] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0183] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0184] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0185] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0186] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0187] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0188] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0189] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0190] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0191] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A steam oven, characterized in that, include: The box body has a cooking cavity; A heating element is configured to heat the food in the cooking cavity; A steam generator is configured to provide a steam flow to the cooking chamber; A temperature sensor is configured to detect the temperature in the cooking cavity; A humidity sensor is configured to detect the humidity in the cooking cavity; A control unit connected to the heating assembly, the steam generator, the temperature sensor, and the humidity sensor is configured to: Perform a first cooking task, which is configured to control the operation of the heating assembly and the steam generator to bring the temperature in the cooking chamber to a first temperature and the humidity in the cooking chamber to a first humidity; the first temperature and the first humidity are used to heat and absorb water from the starch in the food. After a first preset time, a second cooking task is executed, which is configured to control the operation of the heating component and the steam generator to bring the temperature in the cooking chamber to a second temperature and the humidity in the cooking chamber to a second humidity; the second temperature and the second humidity are used to convert at least a portion of the starch in the food into resistant starch; After a second preset time, a third cooking task is performed, which is configured to control the operation of the heating component to bring the temperature in the cooking chamber to a third temperature; the third temperature is used to stabilize and mature the resistant starch.

2. The steam oven according to claim 1, characterized in that, The control unit is configured to: When performing the first cooking task, if the temperature in the cooking cavity is determined to be at a first temperature based on the temperature reported by the temperature sensor, the heating component is stopped. and / or; Based on the humidity reported by the humidity sensor, when the humidity in the cooking cavity is determined to be at a first humidity level, the steam generator stops operating.

3. The steam oven according to claim 2, characterized in that, The control unit is configured to: After the heating assembly and / or the steam generator are stopped, the temperature and / or humidity in the cooking cavity are detected based on the humidity and / or humidity reported by the temperature sensor and / or the humidity sensor. When the temperature in the cooking cavity is determined to have dropped to the target temperature, the heating assembly is restarted; the target temperature is determined based on the first temperature. And / or, When the humidity in the cooking cavity is determined to have decreased to the target humidity, the steam generator is restarted; the target humidity is determined based on the first humidity.

4. The steam oven according to claim 3, characterized in that, The control unit is configured to: When the second cooking task begins, the heating component is stopped. or, During the execution of the third cooking task, the steam generator is stopped.

5. The steam oven according to claim 4, characterized in that, The steam oven further includes a fan and an air duct cavity, the fan being disposed in the air duct cavity, the air duct cavity being in communication with the cooking cavity, and the control unit being configured to: When performing the third cooking task, the fan is operated to exhaust the steam flow in the cooking chamber to the outside through the air duct cavity.

6. The steam oven according to any one of claims 1-5, characterized in that, The control unit is configured to: Before performing the first cooking task, a preheating task is performed, which is configured to control the operation of the heating components and the steam generator to bring the temperature in the cooking chamber to a fourth temperature and the humidity in the cooking chamber to a fourth humidity.

7. The steam oven according to any one of claims 1-5, characterized in that, The control unit is configured to: Get cooking time; Based on the cooking time, a first preset time, a second preset time, and a third preset time are determined; the sum of the first preset time and the second preset time is less than or equal to the third preset time.

8. The steam oven according to claim 7, characterized in that, The control unit is configured to: The first temperature and the first humidity are determined from the first temperature range and the first humidity range based on the first preset duration; The second temperature and the second humidity are determined from the second temperature range and the second humidity range according to the second preset duration; The third temperature and the third humidity are determined from the third temperature range and the third humidity range based on the third preset duration.

9. The steam oven according to claim 1, characterized in that, The control unit is configured to: Obtain the cooking temperature; The third temperature is determined based on the cooking temperature.

10. A control method for a steam oven, characterized in that, The steam oven includes: The box body has a cooking cavity; A heating element is configured to heat the food in the cooking cavity; A steam generator is configured to provide a steam flow to the cooking chamber; A temperature sensor is configured to detect the temperature in the cooking cavity; A humidity sensor is configured to detect the humidity in the cooking cavity; The method includes: Perform a first cooking task, which is configured to control the operation of the heating assembly and the steam generator to bring the temperature in the cooking chamber to a first temperature and the humidity in the cooking chamber to a first humidity; the first temperature and the first humidity are used to heat and absorb water from the starch in the food. After a first preset time, a second cooking task is executed, which is configured to control the operation of the heating component and the steam generator to bring the temperature in the cooking chamber to a second temperature and the humidity in the cooking chamber to a second humidity; the second temperature and the second humidity are used to convert at least a portion of the starch in the food into resistant starch; After a second preset time, a third cooking task is performed, which is configured to control the operation of the heating component to bring the temperature in the cooking chamber to a third temperature; the third temperature is used to stabilize and mature the resistant starch.

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