An air fryer, a control method, device and computer equipment of the air fryer

Abstract

The application relates to the technical field of electrical equipment, and discloses an air fryer, a control method and device of the air fryer and computer equipment, wherein the air fryer comprises a cooking cavity, an upper electrode, an upper electrode driving device, a current detection device, a lower electrode and a controller; the upper electrode comprises a plurality of first electrodes and is arranged at the top of the cooking cavity; the upper electrode driving device is used for driving the upper electrode to descend or ascend; the current detection device comprises a plurality of current detection elements, the plurality of current detection elements are arranged in one-to-one correspondence with the plurality of first electrodes, and are used for detecting the current of the first electrode; the lower electrode is arranged at the bottom of the cooking cavity; and the controller is electrically connected with the upper electrode driving device and the current detection device. Different heating voltages corresponding to different regions of the food to be heated are adopted for heating, so that the problem of uneven heating and inconsistent quality in the heated food when the air fryer is used to heat the food can be solved.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, specifically to an air fryer, an air fryer control method, a device, and a computer device. Background Technology

[0002] Currently, air fryers are becoming increasingly common in daily life. However, when using air fryers to heat food, especially liquid food, uneven heating and inconsistent quality can easily occur. Summary of the Invention

[0003] In view of this, the present invention provides an air fryer, an air fryer control method, an apparatus, and a computer device to solve the problems of uneven heating and inconsistent quality of food when using an air fryer to heat food.

[0004] In a first aspect, embodiments of the present invention provide an air fryer, which includes a cooking cavity, an upper electrode, an upper electrode driving device, a current detection device, a lower electrode, and a controller. The upper electrode includes a plurality of first electrodes and is disposed at the top of the cooking cavity. The upper electrode driving device is used to drive the upper electrode to descend or ascend. The current detection device includes a plurality of current detection elements, which are disposed one-to-one with the plurality of first electrodes and are used to detect the current of the first electrodes. The lower electrode is disposed at the bottom of the cooking cavity. The controller is electrically connected to the upper electrode driving device and the current detection device.

[0005] The air fryer provided in this invention includes an upper electrode, an upper electrode driving device, a current detection device, and a lower electrode. When there is food to be heated in the air fryer, the upper electrode can be driven by the upper electrode driving device to descend and contact the food to be heated. By applying a conductivity detection voltage between the upper electrode and the lower electrode, the current detected by each current detection element is obtained, and the conductivity of different areas of the food to be heated is obtained. Furthermore, the heating voltage that needs to be applied between each first electrode in contact with the food and the lower electrode is obtained. In other words, for different areas of the food to be heated, a heating voltage corresponding to that area is used for heating. This can solve the problem of uneven heating and inconsistent quality of food when heating food using an air fryer.

[0006] It should be noted that the above-mentioned heating of different areas of the food to be heated using heating voltages corresponding to those areas is ohmic heating. Ohmic heating is a process in which the material directly converts electrical energy into heat energy. It does not require a temperature difference between the surface and the interior of the object as a driving force for heat transfer; instead, heat is generated within the entire volume of the material itself. Therefore, this method has a fast heating speed and high energy utilization rate.

[0007] In one alternative implementation, the air fryer also includes a distance detection device disposed at the top of the cooking chamber.

[0008] This allows for accurate determination of the heating voltage in each region of the food to be heated. In one alternative embodiment, multiple first electrodes are evenly distributed at the top of the cooking cavity.

[0009] This allows the air fryer to heat different foods evenly.

[0010] In one alternative embodiment, the distance detection device includes multiple distance sensors that are evenly distributed on the top of the cooking cavity.

[0011] This allows for the accurate determination of the heating voltage for different foods to be heated (e.g., foods that are not heated at the same height in all areas).

[0012] In one alternative embodiment, the lower electrode is an electrode plate, or the lower electrode includes a plurality of second electrodes disposed corresponding to the first electrode.

[0013] When the current electrode is an electrode plate, the heating of the food to be heated is more uniform.

[0014] In one alternative implementation, the air fryer also includes heating elements for heating the cooking cavity.

[0015] Therefore, when ohmic heating cannot be used to heat the food, the heating element can be used to heat the food.

[0016] Secondly, this invention also provides a control method for an air fryer. The air fryer includes a cooking cavity, an upper electrode, an upper electrode driving device, a current detection device, and a lower electrode. The upper electrode includes multiple first electrodes disposed at the top of the cooking cavity. The upper electrode driving device is used to drive the upper electrode to descend or ascend. The current detection device includes multiple current detection elements, which are respectively disposed with respect to the multiple first electrodes and are used to detect the current of the first electrodes. The lower electrode is disposed at the bottom of the cooking cavity. The control method for the air fryer includes: when there is food to be heated in the cooking cavity, sending a descending signal to the upper electrode driving device to cause the upper electrode driving device to descend. The upper electrode is driven to descend; after the upper electrode descends to contact the food to be heated, the upper electrode is stopped by the upper electrode driving device, and a conductivity detection voltage is applied between the upper and lower electrodes; the current detected by each current detection element is acquired; the conductivity of different areas of the food to be heated is obtained based on the conductivity detection voltage and the current detected by each current detection element; the heating voltage to be applied between each first electrode and the lower electrode in contact with the food to be heated is obtained based on the conductivity of different areas of the food to be heated; the conductivity detection voltage applied between each first electrode and the lower electrode in contact with the food to be heated is replaced with the corresponding heating voltage.

[0017] The air fryer control method provided in this embodiment obtains the conductivity of different areas of the food to be heated by applying a conductivity detection voltage between the upper and lower electrodes and acquiring the current detected by each current detection element. Furthermore, it obtains the heating voltage that needs to be applied between each first electrode and the lower electrode that is in contact with the food to be heated. In other words, for different areas of the food to be heated, a heating voltage corresponding to that area is used for heating. This solves the problem of uneven heating and inconsistent quality of food when heating it in an air fryer.

[0018] In one optional implementation, obtaining the conductivity of different regions of the food to be heated based on the conductivity detection voltage and the current detected by each current detection element includes: selecting a first electrode from the upper electrodes that is in contact with the food to be heated; for any first electrode i in contact with the food to be heated, obtaining the conductivity of region i of the food to be heated corresponding to the first electrode i using a preset first formula based on the conductivity detection voltage and the current in the first electrode i; and iterating through each first electrode in contact with the food to be heated to obtain the conductivity of different regions of the food to be heated; the first formula is G. i =ρI i / U i Among them, G i I represents the conductivity of region i of the food to be heated, ρ represents the conductivity adjustment coefficient, and I i U represents the current in the first electrode i, and U represents the conductivity detection voltage.

[0019] This allows for the accurate determination of the electrical conductivity of different areas of the food to be heated.

[0020] In one optional embodiment, the air fryer further includes a distance detection device disposed at the top of the cooking cavity. The method for obtaining the required heating voltage between each first electrode and lower electrode in contact with the food to be heated, based on the conductivity of different regions of the food to be heated, includes: determining the food height of each region of the food to be heated using the detection data from the distance detection device; for any region i of the food to be heated, obtaining a reference conductivity of region i based on the conductivity of region i and the food height; acquiring a preset correspondence between target temperature, reference conductivity, and reference voltage; searching within the correspondence between target temperature, reference conductivity, and reference voltage based on the target temperature and reference conductivity of region i to obtain a reference voltage for the first electrode corresponding to region i; obtaining the required heating voltage i between the first electrode and lower electrode corresponding to region i based on the reference voltage and the food height of region i; and traversing each region of the food to be heated to obtain the required heating voltage between each first electrode and lower electrode in contact with the food to be heated.

[0021] This allows for the accurate determination of the heating voltage that needs to be applied between each first electrode and the lower electrode that comes into contact with the food to be heated.

[0022] In one optional embodiment, the air fryer control method further includes the following steps: when the distance detection device includes a distance sensor, determining the food height of each area of ​​the food to be heated using the detection data of the distance detection device includes: acquiring a first distance between the distance sensor detected by the distance sensor and the bottom plate of the cooking cavity; acquiring a second distance between the distance sensor detected by the distance sensor and the surface of the food to be heated; subtracting the second distance from the first distance to obtain the food height of the food to be heated; and using the food height of the food to be heated as the food height of each area of ​​the food to be heated; or, when the distance detection device includes multiple distance sensors, determining the food height of each area of ​​the food to be heated using the detection data of the distance detection device includes: for any area i, determining the distance sensor i corresponding to area i; acquiring a third distance between the distance sensor i detected by the distance sensor i and the bottom plate of the cooking cavity; acquiring a fourth distance between the distance sensor i detected by the distance sensor i and the surface of the food to be heated; subtracting the fourth distance from the third distance to obtain the food height of area i of the food to be heated; and traversing all areas of the food to be heated to obtain the food height of each area of ​​the food to be heated.

[0023] When all areas of the food to be heated have the same height, a single distance sensor can determine the height of each area. When not all areas of the food to be heated have the same height, multiple sensors are needed to determine the height of each area. In one optional implementation, obtaining the reference conductivity of area i based on the conductivity of area i and the height of the food includes dividing the conductivity of area i by the height of the food in area i.

[0024] This allows for the accurate determination of the reference conductivity of each region within the food to be heated.

[0025] In one alternative implementation, obtaining the heating voltage i to be applied between the first electrode and the lower electrode corresponding to region i based on the reference voltage and the food height of region i includes: multiplying the reference voltage by the heating voltage i to be applied between the first electrode and the lower electrode corresponding to region i based on the food height of region i.

[0026] This allows for the accurate determination of the heating voltage in each area of ​​the food to be heated.

[0027] In one optional embodiment, before replacing the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated with a corresponding heating voltage, the method further includes: determining whether the reference conductivity of each region of the food to be heated is greater than a preset first threshold, and displaying the determination result; when a heating command based on the determination result is received, performing the step of replacing the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated with a corresponding heating voltage; or, determining whether the reference conductivity of each region of the food to be heated is greater than a preset first threshold; determining the area of ​​the food to be heated that can be ohm-heated based on whether the reference conductivity of each region of the food to be heated is greater than the preset first threshold; when the area of ​​the food to be heated that can be ohm-heated is greater than a preset second threshold, performing the step of replacing the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated with a corresponding heating voltage.

[0028] This allows for ohmic heating of food according to the user's heating needs.

[0029] In one optional implementation, before the upward electrode driving device sends a descent signal, the method further includes: acquiring a descent command; parsing the descent command to obtain the first electrode among the upper electrodes that needs to be lowered; or, when the air fryer also includes multiple distance sensors disposed on the top of the cooking cavity, before the upward electrode driving device sends a descent signal, the method further includes: determining the placement position of the food to be heated in the cooking cavity based on a fourth distance detected by each distance sensor in the distance detection device; and determining the first electrode among the upper electrodes that needs to be lowered based on the placement position of the food to be heated in the cooking cavity.

[0030] This is because determining the first electrode that needs to be lowered when the food to be heated is first placed in the tableware and then into the cooking cavity ensures operational safety. In an optional embodiment, after replacing the conductivity detection voltage applied between each first electrode and the lower electrode in contact with the food to be heated with the corresponding heating voltage, the method further includes: acquiring the actual temperature of the food to be heated; when the actual temperature of the food to be heated meets a preset condition, performing a conductivity detection step and an ohmic heating step; wherein, the conductivity detection step includes: applying a conductivity detection voltage between the upper electrode and the lower electrode; acquiring the current detected by each current detection element; obtaining the conductivity of different regions of the food to be heated based on the conductivity detection voltage and the current detected by each current detection element; the ohmic heating step includes: obtaining the heating voltage that needs to be applied between each first electrode and the lower electrode in contact with the food to be heated based on the conductivity of different regions of the food to be heated; replacing the conductivity detection voltage applied between each first electrode and the lower electrode in contact with the food to be heated with the corresponding heating voltage.

[0031] This allows for dynamic adjustment of the heating voltage required between each first electrode and lower electrode that comes into contact with the food to be heated during the heating process.

[0032] In one alternative implementation, before the upward electrode driving device sends a downward signal, the method further includes: determining whether the food to be heated is a liquid; and when the food to be heated is a liquid, executing the step of sending a downward signal from the upward electrode driving device.

[0033] This allows for ohmic heating of liquid foods only, making the air fryer both convenient and able to heat food evenly.

[0034] Thirdly, embodiments of the present invention also provide a control device for an air fryer. The air fryer includes a cooking cavity, an upper electrode, an upper electrode driving device, a current detection device, and a lower electrode. The upper electrode includes multiple first electrodes disposed at the top of the cooking cavity. The upper electrode driving device is used to drive the upper electrode to descend or ascend. The current detection device includes multiple current detection elements, which are respectively disposed with respect to the multiple first electrodes and are used to detect the current of the first electrodes. The lower electrode is disposed at the bottom of the cooking cavity. The control device for the air fryer includes an upper electrode driving device control module, a current detection and application module, a first acquisition module, a conductivity determination module, a heating voltage determination module, and a heating voltage application module. When there is food to be heated in the cooking cavity, the upper electrode driving device control module is used to send a descent signal to the upper electrode driving device. The upper electrode is driven by a drive device to descend. After the upper electrode descends to contact the food to be heated, the drive device stops the descent. A current application module applies a conductivity detection voltage between the upper and lower electrodes. A first acquisition module acquires the current detected by each current detection element. A conductivity determination module determines the conductivity of different regions of the food to be heated based on the conductivity detection voltage and the current detected by each current detection element. A heating voltage determination module determines the heating voltage to be applied between each first electrode and lower electrode in contact with the food to be heated based on the conductivity of different regions of the food to be heated. A heating voltage application module replaces the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated with the corresponding heating voltage.

[0035] Fourthly, embodiments of the present invention also provide a computer device, including a memory and a processor, which are communicatively connected to each other. The memory stores computer instructions, and the processor executes the computer instructions to perform the air fryer control method of the second aspect or any corresponding embodiment described above.

[0036] Fifthly, embodiments of the present invention also provide an air fryer, including the computer device of the third aspect.

[0037] In a sixth aspect, embodiments of the present invention also provide a computer-readable storage medium storing computer instructions for causing a computer to execute the control method for an air fryer according to the second aspect or any corresponding embodiment thereof. Attached Figure Description

[0038] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the heating section in the air fryer according to an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram showing the distribution of the first electrode at the top of the cooking cavity in an embodiment of the present invention;

[0041] Figure 3 This is a flowchart of a control method for an air fryer according to an embodiment of the present invention;

[0042] Figure 4 This is a flowchart of another control method for an air fryer according to an embodiment of the present invention;

[0043] Figure 5 This is a schematic diagram of feedback from different heating zones according to an embodiment of the present invention;

[0044] Figure 6 This is a flowchart of a control method for an air fryer according to an embodiment of the present invention;

[0045] Figure 7 This is a flowchart of another control method for an air fryer according to an embodiment of the present invention;

[0046] Figure 8 This is a flowchart illustrating an example of an air fryer control method according to an embodiment of the present invention;

[0047] Figure 9 This is a structural block diagram of an air fryer control device according to an embodiment of the present invention;

[0048] Figure 10 This is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention;

[0049] The components are: 1. Top of the cooking cavity; 2. First electrode; 3. Food to be heated; 4. Bottom of the cooking cavity; 5. Heating tube; 6. Utensils for storing the food to be heated. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] According to an embodiment of the present invention, an air fryer is provided. Figure 1 This is a schematic diagram of the heating section in an air fryer according to an embodiment of the present invention, as shown below. Figure 1 As shown, the air fryer includes a cooking cavity, an upper electrode, an upper electrode driving device, a current detection device, a lower electrode, and a controller. The upper electrode includes multiple first electrodes 2, which are disposed at the top 1 of the cooking cavity. The upper electrode driving device is used to drive the upper electrode to descend or rise. The current detection device includes multiple current detection elements, which are disposed one-to-one with the multiple first electrodes 2, and are used to detect the current of the first electrodes 2. The lower electrode is disposed at the bottom 4 of the cooking cavity. The controller is electrically connected to the upper electrode driving device and the current detection device.

[0052] For example, the first electrode 2 is made of food-grade material.

[0053] The air fryer provided in this embodiment of the invention includes an upper electrode, an upper electrode driving device, a current detection device, and a lower electrode. When there is food 3 to be heated in the air fryer, the upper electrode can be driven by the upper electrode driving device to descend and contact the food 3 to be heated. By applying a conductivity detection voltage between the upper electrode and the lower electrode, the current detected by each current detection element is obtained, and the conductivity of different areas of the food 3 to be heated is obtained. Furthermore, the heating voltage that needs to be applied between each first electrode 2 in contact with the food 3 and the lower electrode is obtained. In other words, for different areas of the food 3 to be heated, a heating voltage corresponding to that area is used for heating. This can solve the problem of uneven heating and inconsistent quality of food when heating food using an air fryer.

[0054] It should be noted that the above-mentioned heating of different areas of the food to be heated 3 using heating voltages corresponding to those areas is ohmic heating. Ohmic heating is a process in which the material directly converts electrical energy into heat energy. It does not require a temperature difference between the surface and the interior of the object as a driving force for heat transfer. Instead, the material generates heat within its entire volume. Therefore, this method has a fast heating speed and high energy utilization rate.

[0055] Specifically, the air fryer also includes a distance detection device located at the top 1 of the cooking chamber. This allows for accurate determination of the heating voltage in each area of ​​the food to be heated 3. Figure 2This is a schematic diagram showing the distribution of the first electrode 2 at the top 1 of the cooking cavity in an embodiment of the present invention, as shown below. Figure 2 As shown, multiple first electrodes 2 are evenly distributed on the top 1 of the cooking cavity. This ensures that the air fryer can heat different foods 3 evenly.

[0056] For example, such as Figure 1 and Figure 2 As shown, the food placement area is a 10×10 electrode matrix made of conductive material. The first electrode 2 is positively charged, and the lower electrode is negatively charged. Each first electrode 2 has a current detection element and a distance sensor. The food to be heated 3 is first placed in the dish 6 that holds the food to be heated, and then the dish 6 that holds the food to be heated is placed in the food placement area of ​​the cooking cavity.

[0057] Specifically, the distance detection device includes multiple distance sensors, which are evenly distributed on the top 1 of the cooking cavity. As mentioned above, the heating voltage of each area of ​​the food to be heated 3 can be accurately determined by the distance sensors. When the distance detection device includes multiple distance sensors, which are evenly distributed on the top 1 of the cooking cavity, the heating voltage of different foods to be heated 3 (e.g., foods to be heated 3 at different heights in different areas) can be accurately determined.

[0058] Specifically, the lower electrode is an electrode plate, or the lower electrode includes multiple second electrodes corresponding to the first electrode 2. It should be noted that when the lower electrode is an electrode plate, the heating of the food 3 to be heated is more uniform.

[0059] Specifically, the air fryer also includes a heating element 5 for heating the cooking cavity. This is because ohmic heating has certain requirements regarding the electrical conductivity of the food to be heated 3, and therefore, in some cases, the food to be heated 3 cannot be heated by ohmic heating. When the air fryer includes a heating element 5 for heating the cooking cavity, the food to be heated 3 can be heated by the heating element 5 when ohmic heating is not possible. For example, the heating element 5 can be positioned below the cooking cavity.

[0060] According to an embodiment of the present invention, an embodiment of a control method for an air fryer is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0061] This embodiment provides a control method for an air fryer, which can be used in the controller of an air fryer. The air fryer includes a cooking cavity, an upper electrode, an upper electrode driving device, a current detection device, and a lower electrode. The upper electrode includes multiple first electrodes and is disposed at the top of the cooking cavity. The upper electrode driving device is used to drive the upper electrode to descend or rise. The current detection device includes multiple current detection elements, which are disposed one-to-one with the multiple first electrodes to detect the current of the first electrodes. The lower electrode is disposed at the bottom of the cooking cavity.

[0062] Figure 3 This is a flowchart of a control method for an air fryer according to an embodiment of the present invention, such as... Figure 3 As shown, the process includes the following steps:

[0063] Step S301: When there is food to be heated in the cooking cavity, the upper electrode driving device sends a descent signal to drive the upper electrode to descend.

[0064] Step S302: After the upper electrode descends to contact the food to be heated, the upper electrode is stopped descending by the upper electrode driving device, and a conductivity detection voltage is applied between the upper electrode and the lower electrode.

[0065] The purpose of applying a conductivity detection voltage between the upper and lower electrodes is to detect the conductivity of different areas of the food to be heated.

[0066] Step S303: Acquire the current detected by each current sensing element.

[0067] Since multiple current sensing elements in the current sensing device are set up one-to-one with multiple first electrodes, the current in each first electrode can be obtained through the current sensing device.

[0068] Step S304: Obtain the conductivity of different areas of the food to be heated based on the conductivity detection voltage and the current detected by each current detection element.

[0069] Step S305: Based on the conductivity of different regions of the food to be heated, obtain the heating voltage that needs to be applied between each first electrode and the lower electrode that is in contact with the food to be heated.

[0070] Step S306: Replace the conductivity detection voltage applied between each first electrode and lower electrode that is in contact with the food to be heated with the corresponding heating voltage.

[0071] In other words, the food in the air fryer is heated by ohmic heating.

[0072] In a specific implementation, before the upward electrode driving device sends a downward signal, the method further includes: determining whether the food to be heated is a liquid; and when the food to be heated is a liquid, executing the step of sending a downward signal to the upward electrode driving device. This is because, when heating food in an air fryer, liquid foods are more prone to uneven heating and inconsistent quality during processing. This embodiment uses ohmic heating, which can solve the problem of uneven heating and inconsistent quality of liquid foods during processing.

[0073] The air fryer control method provided in this embodiment obtains the conductivity of different areas of the food to be heated by applying a conductivity detection voltage between the upper and lower electrodes and acquiring the current detected by each current detection element. Furthermore, it obtains the heating voltage that needs to be applied between each first electrode and the lower electrode that is in contact with the food to be heated. In other words, for different areas of the food to be heated, a heating voltage corresponding to that area is used for heating. This solves the problem of uneven heating and inconsistent quality of food when heating it in an air fryer.

[0074] This embodiment provides a control method for an air fryer, which can be used as a controller for an air fryer. The air fryer includes a cooking cavity, an upper electrode, an upper electrode driving device, a current detection device, and a lower electrode. The upper electrode includes multiple first electrodes and is disposed at the top of the cooking cavity. The upper electrode driving device is used to drive the upper electrode to descend or rise. The current detection device includes multiple current detection elements, which are disposed one-to-one with the multiple first electrodes to detect the current of the first electrodes. The lower electrode is disposed at the bottom of the cooking cavity. A distance sensor is disposed at the top of the cooking cavity.

[0075] Figure 4 This is a flowchart of another air fryer control method according to an embodiment of the present invention, such as... Figure 4 As shown, the process includes the following steps:

[0076] Step S401: When there is food to be heated in the cooking cavity, the first distance between the distance sensor and the bottom plate of the cooking cavity, and the second distance between the distance sensor and the surface of the food to be heated, detected by the distance sensor, are obtained respectively.

[0077] Specifically, once the structure of the air fryer is determined, the first distance between the distance sensor and the bottom plate of the cooking cavity is a fixed value, so the first distance can be pre-stored in the controller.

[0078] Specifically, in order to ensure that the distance sensor can detect the second distance between itself and the surface of the food to be heated when the food is placed in different positions, the distance sensor can be set at the middle position of the top of the cooking cavity.

[0079] Step S402: Subtract the second distance from the first distance to obtain the food height of the food to be heated; and use the food height of the food to be heated as the food height of each area of ​​the food to be heated.

[0080] This is because, for liquid food, the height of each area is the same, so a distance sensor can be used to obtain a second distance between the distance sensor and the surface of the food to be heated, thereby obtaining the height of the food to be heated.

[0081] Step S403: Send a descent signal to the upper electrode driving device to drive the upper electrode to descend. After the upper electrode descends to contact the food to be heated, use the upper electrode driving device to control the upper electrode to stop descending.

[0082] Step S404: Apply a conductivity detection voltage between the upper and lower electrodes.

[0083] In other words, the same conductivity detection voltage is applied between each first electrode and the lower electrode.

[0084] Step S405: Acquire the current detected by each current sensing element.

[0085] Since multiple current sensing elements are set up one-to-one with multiple first electrodes, the current detected by each current sensing element is the current in each first electrode.

[0086] Step S406: Select the first electrode that will be in contact with the food to be heated from the upper electrodes based on the current detected by each current detection element.

[0087] This is because the current in the first electrode in the upper electrode that is not in contact with the food to be heated is different from the current in the first electrode in the upper electrode that is in contact with the food to be heated. Therefore, the first electrode in the upper electrode that is in contact with the food to be heated can be selected based on the current detected by each current detection element obtained in step S405.

[0088] Step S407: For any first electrode i in contact with the food to be heated, the conductivity of the region i of the food to be heated corresponding to the first electrode i is obtained by using a preset first formula based on the conductivity detection voltage and the current in the first electrode i; the conductivity of different regions of the food to be heated is obtained by traversing each first electrode in contact with the food to be heated.

[0089] Specifically, the first formula is G i =ρI i / U i

[0090] Among them, G iI represents the conductivity of region i of the food to be heated, ρ represents the conductivity adjustment coefficient, and I i U represents the current in the first electrode i, and U represents the conductivity detection voltage.

[0091] Step S408: For any region i of the food to be heated, obtain the reference conductivity of region i based on the conductivity of region i and the height of the food; obtain the preset correspondence between target temperature, reference conductivity and reference voltage; search in the correspondence between target temperature, reference conductivity and reference voltage based on the target temperature and reference conductivity of region i to obtain the reference voltage of the first electrode corresponding to region i; obtain the heating voltage i that needs to be applied between the first electrode and the lower electrode corresponding to region i based on the reference voltage and the height of the food in region i; traverse each region of the food to be heated to obtain the heating voltage that needs to be applied between each first electrode and the lower electrode in contact with the food to be heated.

[0092] As a specific implementation method, obtaining the reference conductivity of region i based on the conductivity of region i and the food height includes: dividing the conductivity of region i by the food height of region i to obtain the reference conductivity of region i.

[0093] As a specific implementation, obtaining the heating voltage i that needs to be applied between the first electrode and the lower electrode corresponding to region i based on the reference voltage and the food height of region i includes: multiplying the reference voltage by the heating voltage i that needs to be applied between the first electrode and the lower electrode corresponding to region i based on the food height of region i.

[0094] Table 1. Correspondence between target temperature, reference conductivity, and reference voltage

[0095]

[0096]

[0097]

[0098] It should be noted that Table 1 only shows the partial correspondence between target temperature, reference conductivity, and reference voltage.

[0099] Step S409: Determine whether the reference conductivity of each region of the food to be heated is greater than the preset first threshold, and display the determination result.

[0100] Step S409 determines whether each region of the food to be heated can be heated using ohmic heating. For example, the first threshold is 0.4 S / m. That is, when the reference conductivity of a region in the heated food is greater than 0.4 S / m, that region can be considered to be heated using ohmic heating.

[0101] like Figure 5 As shown, the thickened closed-loop circle represents the area that can be heated using ohmic heating at the set temperature; the thickened non-closed-loop circle represents the area that cannot be heated using ohmic heating at the set temperature.

[0102] Step S410: When a heating command based on the judgment result is received, the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated is replaced with the corresponding heating voltage.

[0103] This allows for ohmic heating of food according to the user's heating needs.

[0104] The air fryer control method provided in this embodiment can not only obtain the conductivity of different areas of the food to be heated by applying a conductivity detection voltage between the upper and lower electrodes and obtaining the current detected by each current detection element, but also obtain the heating voltage that needs to be applied between each first electrode and the lower electrode in contact with the food to be heated, so as to heat the food to be heated in the air fryer through ohmic heating; and can also perform ohmic heating on the food to be heated according to the user's heating requirements.

[0105] This embodiment provides a control method for an air fryer, which can be used as a controller for an air fryer. The air fryer includes a cooking cavity, an upper electrode, an upper electrode driving device, a current detection device, and a lower electrode. The upper electrode includes multiple first electrodes and is disposed at the top of the cooking cavity. The upper electrode driving device is used to drive the upper electrode to descend or rise. The current detection device includes multiple current detection elements, which are disposed one-to-one with the multiple first electrodes to detect the current of the first electrodes. The lower electrode is disposed at the bottom of the cooking cavity. A distance sensor is disposed at the top of the cooking cavity.

[0106] Figure 6 This is a flowchart of a control method for an air fryer according to an embodiment of the present invention, as shown below. Figure 6 As shown, the process includes the following steps:

[0107] Step S601: When there is food to be heated in the cooking cavity, the first distance between the distance sensor and the bottom plate of the cooking cavity, and the second distance between the distance sensor and the surface of the food to be heated, detected by the distance sensor, are obtained respectively.

[0108] Step S602: Subtract the second distance from the first distance to obtain the food height of the food to be heated; and use the food height of the food to be heated as the food height of each area of ​​the food to be heated.

[0109] Step S603: Obtain the descent command.

[0110] Specifically, the lowering command can be user-inputted. The user can input the lowering command on the air fryer's control panel based on the position of the food to be heated within the cooking cavity. For example, the position of the food to be heated within the cooking cavity can be determined by the user when placing the food into the cooking cavity.

[0111] Step S604: Parse the descent command to obtain the first electrode that needs to be descended from the upper electrode.

[0112] Step S605: Send a descent signal to the upper electrode driving device so that the upper electrode driving device drives the first electrode that needs to be lowered to descend. After the first electrode that needs to be lowered descends to contact the food to be heated, the upper electrode driving device controls the upper electrode to stop descending.

[0113] This is because, when the food to be heated is first placed in the tableware and then put into the cooking cavity, determining the first electrode that needs to be lowered can ensure the safety of the operation.

[0114] Step S606: Apply a conductivity detection voltage between the upper and lower electrodes.

[0115] Step S607: Obtain the current detected by each current sensing element.

[0116] Step S608: Select the first electrode from the upper electrodes that will be in contact with the food to be heated.

[0117] In this embodiment, since the first electrode that needs to descend among the upper electrodes is determined in step S604 based on the placement position of the food to be heated in the cooking cavity, it can be assumed that each of the first electrodes that needs to descend among the upper electrodes is in contact with the food to be heated. Furthermore, it can be assumed that the current detected by each current detection element in step S608 is from the first electrode in contact with the food to be heated.

[0118] Of course, the first electrode that comes into contact with the food to be heated can also be selected from the upper electrodes based on the current detected by each current sensing element.

[0119] Step S609: For any first electrode i in contact with the food to be heated, the conductivity of the region i of the food to be heated corresponding to the first electrode i is obtained by using a preset first formula based on the conductivity detection voltage and the current in the first electrode i; the conductivity of different regions of the food to be heated is obtained by traversing each first electrode in contact with the food to be heated.

[0120] Specifically, the first formula is G i =ρI i / U i

[0121] Among them, G iI represents the conductivity of region i of the food to be heated, ρ represents the conductivity adjustment coefficient, and I i U represents the current in the first electrode i, and U represents the conductivity detection voltage.

[0122] Step S610: For any region i of the food to be heated, obtain the reference conductivity of region i based on the conductivity of region i and the height of the food; obtain the preset correspondence between target temperature, reference conductivity and reference voltage; search in the correspondence between target temperature, reference conductivity and reference voltage based on the target temperature and reference conductivity of region i to obtain the reference voltage of the first electrode corresponding to region i; obtain the heating voltage i that needs to be applied between the first electrode and the lower electrode corresponding to region i based on the reference voltage and the height of the food in region i; traverse each region of the food to be heated to obtain the heating voltage that needs to be applied between each first electrode and the lower electrode in contact with the food to be heated.

[0123] As a specific implementation method, obtaining the reference conductivity of region i based on the conductivity of region i and the food height includes: dividing the conductivity of region i by the food height of region i to obtain the reference conductivity of region i.

[0124] As a specific implementation, the heating voltage i to be applied between the first electrode and the lower electrode corresponding to region i is obtained based on the reference voltage and the food height in region i, including:

[0125] The heating voltage i that needs to be applied between the first electrode and the lower electrode corresponding to region i is calculated by multiplying the reference voltage by the food height in region i.

[0126] Step S611: Determine whether the reference conductivity of each region of the food to be heated is greater than the preset first threshold, and display the determination result.

[0127] Step S612: When a heating command based on the judgment result is received, the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated is replaced with the corresponding heating voltage.

[0128] Step S613: Obtain the actual temperature of the food to be heated.

[0129] Step S614: Determine whether the actual temperature of the food to be heated meets the preset conditions. If it does, return to step S606.

[0130] When the actual temperature of the food to be heated meets the preset conditions, a conductivity detection step and an ohmic heating step are executed. The conductivity detection step includes: applying a conductivity detection voltage between the upper and lower electrodes; acquiring the current detected by each current detection element; and obtaining the conductivity of different regions of the food to be heated based on the conductivity detection voltage and the current detected by each current detection element. The ohmic heating step includes: obtaining the heating voltage to be applied between each first electrode and lower electrode in contact with the food to be heated based on the conductivity of different regions of the food to be heated; and replacing the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated with the corresponding heating voltage.

[0131] This is because, during the heating process of food, the electrical conductivity of the food varies depending on its temperature. Therefore, it is necessary to redetermine the electrical conductivity of the food at different temperatures.

[0132] The air fryer control method provided in this embodiment not only obtains the conductivity of different regions of the food to be heated by applying a conductivity detection voltage between the upper and lower electrodes and acquiring the current detected by each current detection element, but also obtains the heating voltage that needs to be applied between each first electrode and the lower electrode in contact with the food to be heated, thereby heating the food to be heated in the air fryer through ohmic heating; moreover, it can dynamically adjust the heating voltage that needs to be applied between each first electrode and the lower electrode in contact with the food to be heated during the heating process.

[0133] This embodiment provides a control method for an air fryer, which can be used as a controller for an air fryer. The air fryer includes a cooking cavity, an upper electrode, an upper electrode driving device, a current detection device, and a lower electrode. The upper electrode includes multiple first electrodes and is disposed at the top of the cooking cavity. The upper electrode driving device is used to drive the upper electrode to descend or rise. The current detection device includes multiple current detection elements, which are disposed one-to-one with the multiple first electrodes to detect the current of the first electrodes. The lower electrode is disposed at the bottom of the cooking cavity. Multiple distance sensors are evenly distributed at the top of the cooking cavity.

[0134] Figure 7 This is a flowchart of another control method for an air fryer according to an embodiment of the present invention, such as... Figure 7 As shown, the process includes the following steps:

[0135] Step S701: When there is food to be heated in the cooking cavity, the third distance between each distance sensor and the bottom plate of the cooking cavity, and the fourth distance detected by each distance sensor are obtained respectively.

[0136] Step S702: Determine the placement position of the food to be heated in the cooking cavity based on the fourth distance detected by each distance sensor.

[0137] This is because when the food to be heated is placed in the cooking cavity, since the food is higher than the bottom plate of the cooking cavity, the placement position of the food to be heated in the cooking cavity can be determined based on the third distance detected by each distance sensor.

[0138] Step S703: Determine the first electrode that needs to be lowered in the upper electrode according to the placement position of the food to be heated in the cooking cavity.

[0139] Step S704: Send a descent signal to the upper electrode driving device so that the upper electrode driving device drives the first electrode that needs to be lowered to descend. After the first electrode that needs to be lowered descends to contact the food to be heated, the upper electrode driving device controls the upper electrode to stop descending.

[0140] This is because, when the food to be heated is first placed in the tableware and then put into the cooking cavity, determining the first electrode that needs to be lowered can ensure the safety of the operation.

[0141] Step S705: Apply a conductivity detection voltage between the first electrode and the lower electrode that need to be lowered.

[0142] Step S706: Acquire the current detected by each current sensing element.

[0143] Step S707: Select the first electrode from the upper electrodes that will be in contact with the food to be heated.

[0144] In this embodiment, since the first electrode that needs to descend among the upper electrodes is determined in step S703 based on the placement position of the food to be heated in the cooking cavity, it can be assumed that each of the first electrodes that needs to descend among the upper electrodes is in contact with the food to be heated. Furthermore, it can be assumed that the current detected by each current detection element in step S706 is that of the first electrode in contact with the food to be heated.

[0145] Of course, the first electrode that comes into contact with the food to be heated can also be selected from the upper electrodes based on the current detected by each current sensing element.

[0146] Step S708: For any first electrode i in contact with the food to be heated, the conductivity of the region i of the food to be heated corresponding to the first electrode i is obtained by using a preset first formula based on the conductivity detection voltage and the current in the first electrode i; the conductivity of different regions of the food to be heated is obtained by traversing each first electrode in contact with the food to be heated.

[0147] Step S709: For any region i, determine the distance sensor i corresponding to region i; subtract the fourth distance between the distance sensor i and the surface of the food to be heated from the third distance between the distance sensor i and the bottom plate of the cooking cavity to obtain the food height of region i to be heated; traverse all regions of the food to be heated to obtain the food height of each region of the food to be heated.

[0148] This is because, for some foods to be heated, not all areas have the same height. When an air fryer includes multiple distance sensors evenly distributed at the top of the cooking cavity, the height of the food in different areas of the food to be heated can be accurately determined.

[0149] Step S710: For any region i of the food to be heated, obtain the reference conductivity of region i based on the conductivity of region i and the height of the food; obtain the preset correspondence between target temperature, reference conductivity and reference voltage; search in the correspondence between target temperature, reference conductivity and reference voltage based on the target temperature and reference conductivity of region i to obtain the reference voltage of the first electrode corresponding to region i; obtain the heating voltage i that needs to be applied between the first electrode and the lower electrode corresponding to region i based on the reference voltage and the height of the food in region i; traverse each region of the food to be heated to obtain the heating voltage that needs to be applied between each first electrode and the lower electrode in contact with the food to be heated.

[0150] As a specific implementation method, obtaining the reference conductivity of region i based on the conductivity of region i and the food height includes: dividing the conductivity of region i by the food height of region i to obtain the reference conductivity of region i.

[0151] As a specific implementation, the heating voltage i to be applied between the first electrode and the lower electrode corresponding to region i is obtained based on the reference voltage and the food height in region i, including:

[0152] The heating voltage i that needs to be applied between the first electrode and the lower electrode corresponding to region i is calculated by multiplying the reference voltage by the food height in region i.

[0153] Step S711: Determine whether the reference conductivity of each region of the food to be heated is greater than the preset first threshold, and display the determination result.

[0154] Step S712: When a heating command based on the judgment result is received, the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated is replaced with the corresponding heating voltage.

[0155] Specifically, steps S711 and S712 can also be replaced by the following steps: determining whether the reference conductivity of each region of the food to be heated is greater than a preset first threshold; determining the area of ​​the food to be heated that can be ohmic heated based on whether the reference conductivity of each region of the food to be heated is greater than the preset first threshold; when the area of ​​the food to be heated that can be ohmic heated is greater than a preset second threshold, performing the step of replacing the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated with the corresponding heating voltage.

[0156] Step S713: Obtain the actual temperature of the food to be heated.

[0157] Step S714: Determine whether the actual temperature of the food to be heated meets the preset conditions. If it does, return to step S705.

[0158] Figure 8 This is a flowchart illustrating an example of an air fryer control method according to an embodiment of the present invention, as shown below. Figure 1 and Figure 8 As shown, the control method for an air fryer includes the following steps:

[0159] Food is placed in a piece of tableware with good conductivity. A distance sensor first determines the food's position, and the corresponding electrode descends to make full contact with the food (this can also be manually adjusted via the control panel). A conductivity detection voltage is applied, and the conductivity of different areas of the food is output based on the feedback current from each electrode in contact with the food, according to the conductivity calculation formula. Based on this distribution, different heating voltages are applied to each electrode in contact with the food according to their conductivity levels, using ohmic heating technology to heat the food evenly. It should be noted that before using ohmic heating technology, it is necessary to determine whether different areas of the food meet the conditions for ohmic heating, and based on whether the food meets these conditions, it is determined whether to use ohmic heating technology.

[0160] In other words, based on the current value suitable for ohmic heating obtained during the conductivity testing phase, the voltage applied to each electrode is calculated using the formula. Higher conductivity requires a lower applied voltage. Furthermore, since conductivity is particularly temperature-dependent during heating, the voltage applied to the electrodes needs to be dynamically adjusted.

[0161] The air fryer control method provided in this embodiment not only obtains the conductivity of different regions of the food to be heated by applying a conductivity detection voltage between the upper and lower electrodes and acquiring the current detected by each current detection element, but also further determines the heating voltage that needs to be applied between each first electrode and the lower electrode in contact with the food to be heated, thereby heating the food in the air fryer through ohmic heating. Furthermore, it allows for dynamic adjustment of the heating voltage that needs to be applied between each first electrode and the lower electrode in contact with the food to be heated during the heating process.

[0162] This embodiment also provides a control device for an air fryer, which is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0163] This embodiment provides a control device for an air fryer, applied to the controller of an air fryer. The air fryer includes a cooking cavity, an upper electrode, an upper electrode driving device, a current detection device, and a lower electrode. The upper electrode includes multiple first electrodes and is disposed at the top of the cooking cavity. The upper electrode driving device is used to drive the upper electrode to descend or rise. The current detection device includes multiple current detection elements, which are disposed one-to-one with the multiple first electrodes to detect the current of the first electrodes. The lower electrode is disposed at the bottom of the cooking cavity. The controller is electrically connected to the upper electrode driving device and the current detection device.

[0164] like Figure 9 As shown, the control device for the air fryer includes:

[0165] The upper electrode drive device control module 901 sends a descent signal to the upper electrode drive device when there is food to be heated in the cooking cavity, so that the upper electrode drive device drives the upper electrode to descend; after the upper electrode descends to contact the food to be heated, the upper electrode drive device controls the upper electrode to stop descending.

[0166] The current application module 902 is used to apply a conductivity detection voltage between the upper and lower electrodes.

[0167] The first acquisition module 903 is used to acquire the current detected by each current detection element.

[0168] The conductivity determination module 904 is used to obtain the conductivity of different areas of the food to be heated based on the conductivity detection voltage and the current detected by each current detection element.

[0169] The heating voltage determination module 905 is used to determine the heating voltage that needs to be applied between each first electrode and the lower electrode in contact with the food to be heated, based on the conductivity of different regions of the food to be heated.

[0170] The heating voltage application module 906 is used to replace the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated with the corresponding heating voltage.

[0171] In some optional embodiments, the conductivity determination module 904 includes a first electrode screening unit and a conductivity determination unit. The first electrode screening unit is used to screen out first electrodes from the upper electrodes that will contact the food to be heated. The conductivity determination unit is used to, for any first electrode i in contact with the food to be heated, calculate the conductivity of region i of the food to be heated corresponding to the first electrode i using a preset first formula based on the conductivity detection voltage and the current in the first electrode i; and to obtain the conductivity of different regions of the food to be heated by traversing each first electrode in contact with the food to be heated. Wherein, the first formula is b... i =ρI i / U i Among them, G i I represents the conductivity of region i of the food to be heated, ρ represents the conductivity adjustment coefficient, and I i U represents the current in the first electrode i, and U represents the conductivity detection voltage.

[0172] In some optional embodiments, the heating voltage determination module 905 includes a food height determination unit, a reference conductivity determination unit, a reference voltage determination unit, and a heating voltage determination unit. The food height determination unit determines the food height of each region of the food to be heated using detection data from a distance detection device. The reference conductivity determination unit determines the reference conductivity of any region i of the food to be heated based on the conductivity of region i and the food height. The reference voltage determination unit acquires a preset correspondence between target temperature, reference conductivity, and reference voltage; searches within the correspondence between target temperature, reference conductivity, and reference voltage based on the target temperature and reference conductivity of region i to obtain the reference voltage of the first electrode corresponding to region i. The heating voltage determination unit determines the heating voltage i to be applied between the first electrode and the lower electrode corresponding to region i based on the reference voltage and the food height of region i; and iterates through each region of the food to be heated to obtain the heating voltage to be applied between each first electrode and the lower electrode in contact with the food to be heated.

[0173] In some optional implementations, when the distance detection device includes a distance sensor, the food height determination unit is used to: acquire a first distance between the distance sensor and the bottom plate of the cooking cavity detected by the distance sensor; acquire a second distance between the distance sensor and the surface of the food to be heated detected by the distance sensor; subtract the second distance from the first distance to obtain the food height of the food to be heated; and use the food height of the food to be heated as the food height of each area of ​​the food to be heated.

[0174] In some optional implementations, when the distance detection device includes multiple distance sensors, the food height determination unit is used to: for any region i, determine the distance sensor i corresponding to region i, obtain the third distance detected by distance sensor i between distance sensor i and the bottom plate of the cooking cavity; obtain the fourth distance detected by distance sensor i between distance sensor i and the surface of the food to be heated; subtract the fourth distance from the third distance to obtain the food height of the food region i to be heated; and traverse all regions of the food to be heated to obtain the food height of each region of the food to be heated.

[0175] In some alternative implementations, the reference conductivity determination unit is used to: obtain the reference conductivity of region i by dividing the conductivity of region i by the food height of region i.

[0176] In some alternative implementations, the heating voltage determination unit is used to: multiply a reference voltage by the heating voltage i that needs to be applied between the first electrode and the lower electrode corresponding to the food height in region i.

[0177] In some optional embodiments, the air fryer control device further includes a reference conductivity display module. The reference conductivity display module is used to determine whether the reference conductivity of each region of the food to be heated is greater than a preset first threshold, and displays the determination result. When a heating command based on the determination result is received, the heating voltage application module 906 is used to replace the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated with the corresponding heating voltage.

[0178] In some optional implementations, the air fryer control device further includes a descending electrode determination module. Before the ascending electrode driving device sends a descending signal, the descending electrode determination module acquires a descending command; parses the descending command to determine the first electrode among the upper electrodes that needs to be descended. Alternatively, the descending electrode determination module determines the placement position of the food to be heated in the cooking cavity based on a fourth distance detected by each distance sensor in the distance detection device; and determines the first electrode among the upper electrodes that needs to be descended based on the placement position of the food to be heated in the cooking cavity.

[0179] In some optional embodiments, the air fryer control device further includes a circulation module. After replacing the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated with the corresponding heating voltage, the circulation module is used to obtain the actual temperature of the food to be heated; when the actual temperature of the food to be heated meets preset conditions, the conductivity detection step and the ohmic heating step are executed.

[0180] The conductivity detection step includes: applying a conductivity detection voltage between the upper and lower electrodes; acquiring the current detected by each current detection element; and obtaining the conductivity of different regions of the food to be heated based on the conductivity detection voltage and the current detected by each current detection element. The ohmic heating step includes: obtaining the heating voltage to be applied between each first electrode and lower electrode in contact with the food to be heated based on the conductivity of different regions of the food to be heated; and replacing the conductivity detection voltage applied between each first electrode and lower electrode in contact with the food to be heated with the corresponding heating voltage.

[0181] In some alternative implementations, the air fryer control device further includes a determination module. Before the upward electrode drive device sends a downward signal, the determination module is used to: determine whether the food to be heated is a liquid; when the food to be heated is a liquid, the step of sending a downward signal to the upward electrode drive device is executed.

[0182] In this embodiment, the air purification control device is presented in the form of a functional unit. Here, a unit refers to an ASIC circuit, a processor and memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0183] Further functional descriptions of the above modules and units are the same as those in the corresponding embodiments described above, and will not be repeated here.

[0184] This invention also provides a computer device having the above-described features. Figure 9 The control device of the air purifier shown.

[0185] This invention also provides an air fryer, including the computer device described above.

[0186] Please see Figure 10 , Figure 10 This is a schematic diagram of the structure of a computer device provided in an optional embodiment of the present invention, such as... Figure 10As shown, the computer device includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processors can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple computer devices can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 10 Take a processor 10 as an example.

[0187] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0188] The memory 20 stores instructions executable by at least one processor 10 to cause at least one processor 10 to perform the method shown in the above embodiments.

[0189] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the computer device as shown by a landing page for an app. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, which can be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0190] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0191] The computer device also includes an input device 30 and an output device 40. The processor 10, memory 20, input device 30, and output device 40 can be connected via a bus or other means. Figure 10 Taking the example of a connection between China and Israel via a bus.

[0192] Input device 30 can receive input numerical or character information, and generate key signal inputs related to user settings and function control of the computer device, such as a touchscreen, keypad, mouse, trackpad, touchpad, joystick, one or more mouse buttons, trackball, joystick, etc. Output device 40 may include display devices, auxiliary lighting devices (e.g., LEDs), and haptic feedback devices (e.g., vibration motors). The aforementioned display devices include, but are not limited to, liquid crystal displays, light-emitting diodes, displays, and plasma displays. In some alternative embodiments, the display device may be a touchscreen.

[0193] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above embodiments.

[0194] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An air fryer, comprising a cooking cavity, characterized in that, include: The upper electrode includes a plurality of first electrodes (2) and is disposed on the top (1) of the cooking cavity. An upper electrode driving device is used to drive the upper electrode to descend or rise; The current detection device includes multiple current detection elements, each of which is arranged in a one-to-one correspondence with a plurality of first electrodes (2) for detecting the current of the first electrodes (2); The lower electrode is located at the bottom (4) of the cooking cavity. The controller is electrically connected to the upper electrode driving device and the current detection device; By applying a conductivity detection voltage between the upper and lower electrodes, the current detected by each current detection element is obtained, the conductivity of different regions of the food to be heated is obtained, and the heating voltage that needs to be applied between each first electrode and the lower electrode in contact with the food to be heated is further obtained.

2. The air fryer according to claim 1, characterized in that, Also includes: A distance detection device is installed at the top (1) of the cooking cavity.

3. The air fryer according to claim 1, characterized in that, Multiple first electrodes (2) are evenly distributed on the top (1) of the cooking cavity.

4. The air fryer according to claim 2, characterized in that, The distance detection device includes multiple distance sensors, which are evenly distributed on the top (1) of the cooking cavity.

5. The air fryer according to claim 1, characterized in that, The lower electrode is an electrode plate, or the lower electrode includes a plurality of second electrodes corresponding to the first electrode (2).

6. The air fryer according to claim 1, characterized in that, It also includes a heating tube (5) for heating the cooking cavity.

7. A control method for an air fryer, characterized in that, The air fryer includes a cooking cavity, an upper electrode, an upper electrode driving device, a current detection device, and a lower electrode. The upper electrode includes multiple first electrodes and is disposed at the top of the cooking cavity. The upper electrode driving device is used to drive the upper electrode to descend or rise. The current detection device includes multiple current detection elements, which are disposed one-to-one with the multiple first electrodes and are used to detect the current of the first electrodes. The lower electrode is disposed at the bottom of the cooking cavity; The control method for the air fryer includes: When there is food to be heated in the cooking cavity, a descent signal is sent to the upper electrode driving device to cause the upper electrode driving device to drive the upper electrode to descend. After the upper electrode descends to contact the food to be heated, the upper electrode driving device controls the upper electrode to stop descending, and a conductivity detection voltage is applied between the upper electrode and the lower electrode; The current detected by each of the current detection elements is acquired respectively; The conductivity of different regions of the food to be heated is obtained based on the conductivity detection voltage and the current detected by each current detection element. The heating voltage that needs to be applied between each of the first electrode and the lower electrode in contact with the food to be heated is obtained based on the conductivity of different regions of the food to be heated. The conductivity detection voltage applied between each of the first electrode and the lower electrode in contact with the food to be heated is replaced with the corresponding heating voltage.

8. The method according to claim 7, characterized in that, The process of obtaining the conductivity of different regions of the food to be heated based on the conductivity detection voltage and the current detected by each current detection element includes: The first electrode that will come into contact with the food to be heated is selected from the upper electrodes; For any first electrode i in contact with the food to be heated, the conductivity of region i of the food to be heated corresponding to the first electrode i is obtained using a preset first formula based on the conductivity detection voltage and the current in the first electrode i; the conductivity of different regions of the food to be heated is obtained by traversing each first electrode in contact with the food to be heated. The first formula is = / in, This represents the electrical conductivity of region i of the food to be heated. This represents the conductivity adjustment coefficient. U represents the current in the first electrode i, and U represents the conductivity detection voltage.

9. The method according to claim 7, characterized in that, The air fryer also includes a distance detection device disposed at the top of the cooking cavity, and the step of determining the heating voltage to be applied between each of the first electrodes and the lower electrode in contact with the food to be heated based on the conductivity of different areas of the food to be heated includes: The food height in each area of ​​the food to be heated is determined using the detection data from the distance detection device. For any region i of the food to be heated, a reference conductivity of region i is obtained based on the conductivity of region i and the height of the food; a preset correspondence between target temperature, reference conductivity, and reference voltage is obtained; based on the target temperature and reference conductivity of region i, the reference voltage of the first electrode corresponding to region i is obtained by searching in the correspondence between target temperature, reference conductivity, and reference voltage; and based on the reference voltage and the height of the food in region i, the heating voltage i that needs to be applied between the first electrode and the lower electrode corresponding to region i is obtained. By traversing each region of the food to be heated, the required heating voltage is obtained between each of the first electrode and the lower electrode in contact with the food to be heated.

10. The method according to claim 9, characterized in that: When the distance detection device includes a distance sensor, determining the food height of each area of ​​the food to be heated using the detection data from the distance detection device includes: Obtain a first distance between the distance sensor and the bottom plate of the cooking cavity, as detected by the distance sensor; obtain a second distance between the distance sensor and the surface of the food to be heated, as detected by the distance sensor; subtract the second distance from the first distance to obtain the food height of the food to be heated; use the food height of the food to be heated as the food height of each area of ​​the food to be heated; or, When the distance detection device includes multiple distance sensors, determining the food height of each area of ​​the food to be heated using the detection data from the distance detection device includes: For any region i, determine the distance sensor i corresponding to region i, and obtain the third distance between the distance sensor i and the bottom plate of the cooking cavity detected by the distance sensor i; obtain the fourth distance between the distance sensor i and the surface of the food to be heated detected by the distance sensor i; subtract the fourth distance from the third distance to obtain the food height of the food to be heated in region i; Traverse all regions of the food to be heated to obtain the food height of each region.

11. The method according to claim 9, characterized in that, The process of obtaining the reference conductivity of region i based on the conductivity of region i and the food height includes: The reference conductivity of region i is obtained by dividing the conductivity of region i by the food height in region i.

12. The method according to claim 9, characterized in that, The step of determining the heating voltage i to be applied between the first electrode and the lower electrode corresponding to region i based on the reference voltage and the food height in region i includes: The reference voltage is multiplied by the heating voltage i that needs to be applied between the first electrode and the lower electrode corresponding to the food height in region i.

13. The method according to claim 7, characterized in that, Before replacing the conductivity detection voltage applied between each of the first electrodes and the lower electrode in contact with the food to be heated with the corresponding heating voltage, the method further includes: Determine whether the reference conductivity of each region of the food to be heated is greater than a preset first threshold, and display the determination result; When a heating command based on the judgment result is received, the step of replacing the conductivity detection voltage applied between each of the first electrode and the lower electrode in contact with the food to be heated with the corresponding heating voltage is executed; Alternatively, determine whether the reference conductivity of each region of the food to be heated is greater than a preset first threshold. The area of ​​the food to be heated that can be ohmic-heated is determined based on whether the reference conductivity of each region of the food to be heated is greater than a preset first threshold. When the area of ​​the food to be heated that can be ohmically heated is greater than a preset second threshold, the step of replacing the conductivity detection voltage applied between each of the first electrode and the lower electrode in contact with the food to be heated with the corresponding heating voltage is performed.

14. The method according to claim 9, characterized in that: Before sending a descent signal to the upper electrode driving device, the method further includes: Get the descent command; The descent command is parsed to obtain the first electrode among the upper electrodes that needs to be descended; or, When the air fryer also includes multiple distance sensors disposed at the top of the cooking cavity, it further includes the following before sending a descent signal to the upper electrode drive device: The placement position of the food to be heated in the cooking cavity is determined based on the fourth distance detected by each distance sensor in the distance detection device. Based on the placement of the food to be heated in the cooking cavity, determine the first electrode among the upper electrodes that needs to be lowered.

15. The method according to any one of claims 7 to 14, characterized in that, After replacing the conductivity detection voltage applied between each of the first electrodes and the lower electrode in contact with the food to be heated with the corresponding heating voltage, the method further includes: Obtain the actual temperature of the food to be heated; When the actual temperature of the food to be heated meets the preset conditions, the conductivity detection step and the ohmic heating step are executed. The conductivity detection step includes: applying a conductivity detection voltage between the upper electrode and the lower electrode; acquiring the current detected by each current detection element; and obtaining the conductivity of different regions of the food to be heated based on the conductivity detection voltage and the current detected by each current detection element. The ohmic heating step includes: obtaining the heating voltage to be applied between each first electrode and the lower electrode in contact with the food to be heated based on the conductivity of different regions of the food to be heated; and replacing the conductivity detection voltage applied between each first electrode and the lower electrode in contact with the food to be heated with the corresponding heating voltage.

16. The method according to claim 15, characterized in that, Before sending a descent signal to the upper electrode driving device, the method further includes: Determine whether the food to be heated is a liquid; When the food to be heated is liquid, the step of sending a descent signal to the upper electrode driving device is performed.

17. A control device for an air fryer, characterized in that, The air fryer includes a cooking cavity, an upper electrode, an upper electrode driving device, a current detection device, and a lower electrode. The upper electrode includes multiple first electrodes and is disposed at the top of the cooking cavity. The upper electrode driving device is used to drive the upper electrode to descend or rise. The current detection device includes multiple current detection elements, which are disposed one-to-one with the multiple first electrodes and are used to detect the current of the first electrodes. The lower electrode is disposed at the bottom of the cooking cavity; The control device for the air fryer includes: The upper electrode driving device control module is used to send a descent signal to the upper electrode driving device when there is food to be heated in the cooking cavity, so that the upper electrode driving device drives the upper electrode to descend; after the upper electrode descends to contact the food to be heated, the upper electrode driving device controls the upper electrode to stop descending. A current detection module is used to apply a conductivity detection voltage between the upper electrode and the lower electrode; The first acquisition module is used to acquire the current detected by each of the current detection elements respectively; The conductivity determination module is used to obtain the conductivity of different regions of the food to be heated based on the conductivity detection voltage and the current detected by each current detection element. A heating voltage determination module is used to determine the heating voltage that needs to be applied between each of the first electrode and the lower electrode in contact with the food to be heated, based on the conductivity of different regions of the food to be heated. A heating voltage application module is used to replace the conductivity detection voltage applied between each first electrode and the lower electrode in contact with the food to be heated with a corresponding heating voltage.

18. A computer device, characterized in that, include: A memory and a processor are communicatively connected, the memory storing computer instructions, and the processor executing the computer instructions to perform the control method of the air fryer according to any one of claims 7 to 16.

19. An air fryer, characterized in that, Includes the computer device as described in claim 18.

20. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the control method for the air fryer according to any one of claims 7 to 16.

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