Control methods, computer-readable storage media, and cooking appliances

Abstract

This application provides a control method, a computer-readable storage medium, and a cooking appliance. The control method includes: determining whether a latching position signal is received from a latching position detection device. If no latching position signal is received, the gas pressure value of the cooking chamber is detected. The gas pressure value is determined to be greater than a first preset gas pressure threshold. If the gas pressure value is greater than the first preset gas pressure threshold, a pressure relief process is controlled to be executed. If the gas pressure value is less than or equal to the first preset gas pressure threshold, the system further determines whether a preset target gas pressure value corresponding to the current cooking function is greater than a second preset gas pressure threshold. If the preset target gas pressure value corresponding to the current cooking function is greater than the second preset gas pressure threshold, a prompt message is output. If the preset target temperature value corresponding to the current cooking function is less than or equal to the second preset gas pressure threshold, a normal pressure cooking function is controlled to be executed. This application improves the safety and automation of cooking, and enhances the user experience, even in the event of a lid locking failure.

Description

Technical Field

[0001] This application relates generally to the field of cookware technology, and more specifically to the structure, control method, and computer-readable storage medium of a cooking utensil. Background Technology

[0002] Existing cooking appliances have handles or control components for manually driving and unlocking the lid. If the locking mechanism jams or the drive motor malfunctions during cooking, the locking mechanism cannot automatically move to the desired working position, resulting in cooking being unable to proceed or end properly. In this situation, the user is unaware and cannot intervene in time, thus reducing cooking efficiency and leading to a poor user experience.

[0003] The above problems urgently need to be solved through technological improvements. Summary of the Invention

[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This summary section is not intended to limit the key and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, this application provides a cooking appliance with a separate and associated opening and closing mechanism for the cooking cavity, a computer-readable storage medium, and a control method for the cooking appliance.

[0006] This application provides a control method for a cooking appliance. The cooking appliance includes a pot body. The pot body is provided with a pot inner for holding food. The cooking appliance includes a lid. The lid is closably connected to the pot body and forms a cooking cavity between the lid and the pot inner. The lid is provided with a drive motor, a rotating frame, and a fastening member. The rotating frame is connected to the drive motor and can be driven by the drive motor to rotate. The fastening member is connected to the rotating frame and can be driven by the rotating frame to move between a fastened position and a disengaged position. The lid is provided with a fastening position detection device corresponding to the fastening position. The fastening position detection device is electrically connected to the control unit.

[0007] The control method includes the following steps:

[0008] S1: Determine whether a fastening position signal from the fastening position detection device has been received;

[0009] S2: If the engagement position signal is not received, the air pressure value of the cooking cavity is detected;

[0010] S3: Determine whether the air pressure value is greater than the first preset air pressure threshold; the first preset air pressure threshold is the standard atmospheric pressure of the place where the cooking appliance is used. In this step, it is determined whether the cooking cavity is pressurized at present. Because this is related to the safety of use, it is prioritized for detection and judgment in order to make the most timely corresponding control operation.

[0011] S31: If the air pressure value is greater than the first preset air pressure threshold, then control the execution of the pressure relief process;

[0012] S32: If the air pressure value is less than or equal to the first preset air pressure threshold, then continue to determine whether the preset target air pressure value corresponding to the current cooking function is greater than the second preset air pressure threshold; the second preset air pressure threshold is the preset air pressure value for distinguishing whether the cooking appliance is a pressure cooking function. In this step, it is determined whether the current cooking function is a pressure cooking function.

[0013] S321: If the preset target pressure value corresponding to the current cooking function is greater than the second preset pressure threshold, output a prompt message to remind you to use the manual locking method to lock the lid;

[0014] S322: If the preset target temperature value corresponding to the current cooking function is less than or equal to the second preset air pressure threshold, then control the execution of the normal pressure cooking function.

[0015] Two air pressure judgment thresholds are used. The air pressure detection method can be to detect the temperature and then convert it into air pressure, or to directly measure the air pressure using a pressure detection device.

[0016] In step S3, the first preset pressure threshold is the standard atmospheric pressure of the location where the cooking appliance is used. Determining whether the cooking cavity is pressurized is crucial for the safe use of the cooking appliance. By prioritizing the detection of whether the cooking cavity is pressurized, appropriate control operations can be performed more promptly.

[0017] The second preset pressure threshold in step S32 is a preset pressure value within the cooking appliance used to distinguish whether a cooking function is a pressurized cooking function. Step S32 is used to determine whether the current cooking function is a pressurized cooking function.

[0018] Barometric pressure detection methods can include first detecting the temperature and then converting it into a barometric pressure value, or directly measuring the barometric pressure value using a barometric pressure detection device.

[0019] According to this application, in the event of a lid locking failure, the gas pressure inside the cooking cavity is first detected, and it is determined whether the detected gas pressure is greater than a first preset gas pressure threshold. If the detected gas pressure is greater than the first preset gas pressure threshold, a pressure relief process is executed. If the detected gas pressure is less than or equal to the first preset gas pressure threshold, it is then determined whether the preset target gas pressure value corresponding to the current cooking function is greater than a second preset gas pressure value. If the preset target gas pressure value is greater than the second preset gas pressure value, a prompt message is output to remind the user to manually lock the lid. If the preset target gas pressure value is less than or equal to the second preset gas pressure value, cooking is controlled according to the normal pressure cooking function. This reduces manual intervention, improves the degree of automation in the cooking process and cooking safety, thereby enhancing the user experience.

[0020] Optionally, after performing step S321, it is determined whether the engagement position signal has been received within a preset time, and then a step is selected to be executed:

[0021] S3211: If the engagement position signal is received, control to continue executing the cooking process corresponding to the current cooking function;

[0022] S3212: If the engagement position signal is not received, control to stop cooking.

[0023] According to this application, the system can determine whether the manual lid is properly locked based on whether a locking position signal is received within a preset time, thereby controlling whether cooking continues. Upon receiving the locking position signal, the system continues the cooking process corresponding to the current cooking function. If no locking position signal is received, the system stops cooking.

[0024] Optionally, the cover is provided with a steam passage;

[0025] The cover is equipped with an electric pressure relief device that can block or open the steam passage according to control commands;

[0026] The control method step S3211 further includes: if the engagement position signal is received, controlling the electric pressure relief device to switch to the closed state of blocking the steam passage, and continuing to execute the cooking process corresponding to the current pressurized cooking function.

[0027] According to this application, upon receiving a locking position signal, the electric pressure relief device is switched to a closed state to continue the cooking process of the pressurized cooking function.

[0028] Optionally, in step S2, the method for detecting the gas pressure value of the cooking cavity is:

[0029] The temperature value of the cooking cavity is detected and converted into a gas pressure value according to a preset formula, or...

[0030] The cooking appliance is equipped with a pressure detection device, which detects the pressure value of the cooking cavity and communicates with the control unit.

[0031] According to this application, the air pressure value of the cooking cavity can be obtained by first detecting the temperature value of the cooking cavity and then converting it into an air pressure value according to a preset formula. Alternatively, the air pressure value of the cooking cavity can be directly detected by an air pressure detection device.

[0032] Optionally, the cooking appliance is equipped with a cooking cavity pressure detection device electrically connected to the control unit, the cooking cavity pressure detection device detecting the pressure value of the cooking cavity and feeding it back to the control unit.

[0033] According to this application, the pressure value of the cooking cavity is detected by a cooking cavity pressure detection device and fed back to the control unit, thereby enabling the control unit to obtain the pressure value of the cooking cavity.

[0034] Optionally, the cover is provided with a steam passage; the cover is provided with an electric pressure relief device that can block or open the steam passage according to a control command;

[0035] During the pressure relief process, the electric pressure relief device is first started and stopped N times to switch the cooking cavity on and off with atmospheric pressure N times until the air pressure in the cooking cavity is equal to the first preset air pressure threshold, where N is a positive integer and N≥2.

[0036] According to this application, intermittent pressure relief is adopted during pressure relief to improve the safety of pressure relief.

[0037] Optionally, after the air pressure inside the cooking cavity reaches the first preset air pressure threshold, the electric pressure relief device is switched to the open state. The first preset air pressure threshold is the standard atmospheric pressure of the location where the cooking appliance is used. This ensures that the air pressure inside the cooking cavity does not exceed the local standard air pressure, and thus, the cooking appliance controls the heating device installed on it to heat up according to the settings.

[0038] According to this application, during the pressure relief process, when the air pressure inside the cooking cavity drops to a first preset air pressure threshold, the electric pressure relief device is switched to the open state, thereby maintaining communication between the cooking cavity and atmospheric pressure. This ensures that the air pressure inside the cooking cavity does not exceed the local standard atmospheric pressure, allowing the cooking appliance to enter a cooking stage such as the heat preservation stage, or allowing the lid to be opened. After entering a cooking stage such as the heat preservation stage, the cooking appliance controls the heating device installed on it to heat up according to the settings.

[0039] Optionally, the temperature value of the cooking cavity is detected and converted into a pressure value according to a preset formula. The first preset pressure threshold and the second preset pressure threshold correspond to the first temperature threshold and the second temperature threshold, respectively. The first temperature threshold and the second temperature threshold are obtained by querying the temperature-pressure correspondence table in the cooking cavity.

[0040] According to this application, the detected temperature value of the cooking cavity can be converted into a pressure value for comparison with a first preset pressure threshold. Furthermore, based on the temperature-pressure correspondence table within the cooking cavity, the first preset pressure threshold can be converted into a first temperature threshold, and the second preset pressure threshold can be converted into a second temperature threshold, thereby facilitating direct comparison of the first temperature threshold with the detected temperature value of the cooking cavity.

[0041] Optionally, the first preset air pressure threshold corresponds to the standard atmospheric pressure value of the location of the cooking appliance;

[0042] The second preset pressure valve value is a preset pressure value of the cooking appliance used to distinguish whether it has a pressurized cooking function.

[0043] According to this application, since the first preset air pressure threshold corresponds to the standard atmospheric pressure of the cooking appliance's location, pressure relief is controlled when the detected air pressure value of the cooking cavity exceeds the standard atmospheric pressure. If the detected air pressure value of the cooking cavity does not exceed the standard atmospheric pressure, the current cooking function is distinguished as a pressurized cooking function based on whether the preset target air pressure value is greater than the second preset air pressure threshold.

[0044] Optionally, the cooking appliance is provided with a prompting element;

[0045] The cover is provided with a manual part or manual element that is connected to the rotating frame and can drive the rotating frame to rotate;

[0046] In step S321, the prompting information is output by the prompting element to prompt the user to manually lock the lid.

[0047] According to this application, a prompting message is output by a control prompting element to prompt the user to manually lock the lid.

[0048] Optionally, the cooking appliance includes a drive transmission assembly, and the rotating rack is connected to the drive motor via the drive transmission assembly.

[0049] According to this application, by connecting the rotating frame to the drive motor via a drive transmission assembly, the rotating frame is driven to rotate by the drive motor, thereby causing the fastening element to move between the fastening position and the disengaging position.

[0050] Optionally, the drive transmission assembly includes a transmission connector, the driving end of which is connected to the output shaft of the drive motor, and the driven end of which is connected to the rotating frame to drive the rotating frame to rotate.

[0051] According to this application, the drive transmission assembly specifically transmits power between the output shaft of the drive motor and the rotating frame through a transmission connector.

[0052] Optionally, the cover includes a cover body and a rotating frame connected to the cover body, and the cover body is provided with a float component;

[0053] The rotating frame is provided with a limiting hole for engaging with the float component;

[0054] When the fastening member is in the fastening position, the position of the float component is aligned with the position of the limiting hole, or the float component is located in the limiting hole.

[0055] According to this application, a limiting hole is provided on the rotating frame, and a float component is provided on the lid body. When the fastening member is in the fastening position, that is, when the rotating frame is rotated to its position in the first rotation direction, the float component is aligned with the limiting hole. When pressure is applied in the cooking space, the float component can enter the limiting hole. Through the cooperation between the float component and the limiting hole, the rotation of the rotating frame can be stopped, further improving safety in the pressure cooking mode.

[0056] Optionally, functional beams are provided between the frames of the rotating frame, and the limiting holes are located at the intersection of the functional beams or two functional beams.

[0057] When the fastening member is not in the fastening position, the position of the float component is offset from the position of the limiting hole.

[0058] According to this application, if the rotating frame is not rotated to the desired position in the direction that allows the fastener to move to the fastening position, the float component cannot form an anti-rotation engagement with the rotating frame when it is pressed up in the cooking space because the position of the float component is misaligned with the limiting hole.

[0059] A second aspect of this application provides a computer-readable storage medium storing a computer program that, when executed, implements the control method described above.

[0060] According to the computer-readable storage medium of the second aspect of this application, a computer program can be stored to implement the above-described control method when executed. When applied to a cooking appliance, in the event of a lid locking failure, the gas pressure value inside the cooking chamber is first detected, and it is determined whether the detected gas pressure value is greater than a first preset gas pressure threshold. If the detected gas pressure value is greater than the first preset gas pressure threshold, a pressure relief process is executed. If the detected gas pressure value is less than or equal to the first preset gas pressure threshold, it is further determined whether the preset target gas pressure value corresponding to the current cooking function is greater than a second preset gas pressure value. If the preset target gas pressure value is greater than the second preset gas pressure value, a prompt message is output to remind the user to manually lock the lid. If the preset target gas pressure value is less than or equal to the second preset gas pressure value, cooking is controlled according to the normal pressure cooking function. This reduces manual intervention, improves the degree of automation in the cooking process and cooking safety, thereby enhancing the user experience.

[0061] A third aspect of this application provides a cooking appliance, the cooking appliance comprising:

[0062] The pot body includes a pot inner for containing food ingredients;

[0063] A lid, which is detachably disposed on the pot body to form a cooking cavity between the lid and the inner pot, wherein the lid is provided with a steam passage for communicating with the cooking cavity;

[0064] A locking and opening assembly is movably disposed on the lid body, and the locking and opening assembly has a locked state of engaging the inner pot and the lid body and a disengaged state of disengaging from the inner pot and the lid body;

[0065] A position detection device is disposed on the cover and is arranged correspondingly to the cover locking and opening assembly to detect the position signal of the cover locking and opening assembly.

[0066] An electric pressure relief device is provided on the cover, and the electric pressure relief device has an open state for opening the steam passage and a closed state for blocking the steam passage;

[0067] A pressure detection device is used to detect the pressure value inside the cooking cavity;

[0068] A control device electrically connected to a lid-locking / opening assembly, a position detection device, a pressure detection device, and an electric pressure relief device is configured to determine the state of the lid-locking / opening assembly based on a position signal detected by the position detection device, and to control the electric pressure relief device to switch between an open state and a closed state based on the pressure value detected by the pressure detection device in the cooking cavity.

[0069] According to the cooking appliance of the third aspect of this application, the control device can determine the state of the lid locking and opening assembly based on the position signal detected by the position detection device, and accurately control the opening and closing state of the electric pressure relief device based on the air pressure value detected by the air pressure detection device, thereby improving the safety of the cooking process.

[0070] Optionally, the lid locking and unlocking assembly includes a rotating frame and a fastening element. The rotating frame is rotatably mounted on the lid and linked with the fastening element to move the fastening element between a fastened position and a disengaged position. The cooking appliance is provided with a manual rotating frame drive mechanism connected to the rotating frame and capable of driving the rotating frame.

[0071] According to this application, the manual rotating rack drive mechanism allows the user to manually operate the rotating rack to lock or unlock the cooking appliance. In other words, by providing a manual rotating rack drive mechanism, the user can manually operate the rotating rack to lock or unlock the cooking appliance.

[0072] Optionally, the cooking appliance includes a drive transmission assembly and a drive motor, and the rotating rack is connected to the drive motor via the drive transmission assembly. The manual rotating rack drive mechanism includes a force transmission element, one end of which is connected to the drive transmission assembly, and the other end is operated to drive the drive transmission assembly to move, thereby causing the rotating rack to rotate.

[0073] According to this application, by connecting the force transmission component to the drive transmission assembly, the user can drive the rotating frame to rotate by operating the force transmission component, thereby enabling the fastening component to move between the fastening position and the disengaging position.

[0074] Optionally, the cooking appliance includes a drive motor connected to the rotating rack for driving the rotating rack to rotate.

[0075] The manual rotating frame drive mechanism is located near the drive motor, or the drive motor and the manual rotating frame drive mechanism are connected and both are located at the rear of the cover.

[0076] According to this application, the cooking utensil makes better use of the space designed in the lid structure. In other words, this allows for better, fuller, and more rational use of the lid's space.

[0077] Optionally, the cover has an opening adjacent to the manual rotation frame drive mechanism. Alternatively, the cover has an opening suitable for operating the manual rotation frame drive mechanism.

[0078] According to this application, an opening is provided on the cover to allow a user to operate the manual rotating frame drive mechanism. In other words, by providing an opening in the cover, a user can operate the manual rotating frame drive mechanism through the opening.

[0079] Optionally, the electrically operated pressure relief device includes:

[0080] A pressure ball, movably connected to the cover between an open position (opening the steam passage) and a closed position (closing the steam passage); and

[0081] A pressure relief drive is throttledly connected to the pressure ball, and the pressure relief drive is used to actuate the pressure ball to change its position.

[0082] According to this application, the electric pressure relief device specifically drives the pressure ball to move between the open and closed positions through a pressure relief drive component, thereby switching between the open and closed states.

[0083] Optionally, the cooking appliance further includes:

[0084] A drive motor is connected to the cover opening assembly and is connected to the control device to drive the cover opening assembly to change its state under the control of the control device.

[0085] According to this application, under the control of the control device, the locking and unlocking assembly can be driven to switch its state in order to achieve the purpose of locking and unlocking the cover.

[0086] Optionally, the cover locking and unlocking assembly includes:

[0087] A fastening element, movably connected to the lid body in a fastened position and a disengaged position along the radial direction of the lid body; the fastening element in the fastened position locks the lid body and the pot body together, and the fastening element in the disengaged position allows the lid body and the inner pot to detach; and / or

[0088] A rotating frame is rotatably connected to the cover about a first axis. The rotating frame includes a guide hole whose extending direction intersects the radial direction of the cover. A fastening member is movably connected to the guide hole along its extending direction. The rotating frame is drively connected to the drive motor.

[0089] According to this application, during the process of the drive motor driving the rotating frame to rotate, the fastening member moves relative to the rotating frame along the extension direction of the guide hole, thereby realizing the movement of the fastening member between the fastening position and the disengagement position, which facilitates locking and unlocking the cover.

[0090] Optionally, the cooking appliance further includes a transmission connector, one end of which is tractively connected to the drive motor and the other end of which is connected to the rotating frame.

[0091] According to this application, by adding a transmission connector between the drive motor and the rotating frame, the power of the drive motor can be transmitted to the rotating frame through the transmission connector, thereby facilitating the rational arrangement of the positions of the rotating frame and the drive motor.

[0092] Optionally, the cover body includes a cover body, and the cover body is provided with a float component;

[0093] The rotating frame is provided with a limiting hole for engaging with the float component;

[0094] When the cover opening assembly is in the locked state, the position of the float component is aligned with the position of the limiting hole, or the float component is located in the limiting hole.

[0095] According to this application, a limiting hole is provided on the rotating frame, and a float component is provided on the lid body. When the fastening member is in the fastening position, that is, when the rotating frame is rotated to its position in the first rotation direction, the float component is aligned with the limiting hole. When pressure is applied in the cooking space, the float component can enter the limiting hole. Through the cooperation between the float component and the limiting hole, the rotation of the rotating frame can be stopped, further improving safety in the pressure cooking mode.

[0096] Optionally, functional beams are provided between the frames of the rotating frame, and the limiting holes are located at the intersection of the functional beams or two functional beams.

[0097] When the cover opening assembly is in the non-engaged state, the position of the float component is offset from the position of the limiting hole.

[0098] According to this application, if the rotating frame is not rotated to the desired position in the direction that allows the fastener to move to the fastening position, the float component cannot form an anti-rotation engagement with the rotating frame when it is pressed up in the cooking space because the position of the float component is misaligned with the limiting hole. Attached Figure Description

[0099] The following drawings, illustrating embodiments of this application, are incorporated herein by reference and are used to understand this application. The drawings illustrate embodiments of this application and their descriptions, serving to explain the principles of this application. In the drawings,

[0100] Figure 1 A cross-sectional view of a pressure cooking appliance according to a preferred embodiment of this application;

[0101] Figure 2An exploded view of a pressure cooking appliance according to a preferred embodiment of this application;

[0102] Figure 3 A perspective view of a pressure cooking appliance without a lid according to a preferred embodiment of this application;

[0103] Figure 4 for Figure 3 A cross-sectional view of the lid of a pressure cooking appliance, excluding the top cover;

[0104] Figure 5 for Figure 3 A schematic diagram of the rotating frame in the diagram;

[0105] Figure 6 for Figure 3 The image shows a top view of a pressure cooking appliance without the lid, with the fasteners in the engaged position.

[0106] Figure 7 for Figure 3 Another top view of a pressure cooking appliance without the lid is shown, with the fasteners in the disengaged position.

[0107] Figure 8 for Figure 3 A top view of the assembly of the transmission connector and the drive motor in the middle;

[0108] Figure 9 for Figure 8 A cross-sectional view of the assembly of the transmission connector and the drive motor shown;

[0109] Figure 10 This is a part of a flowchart of a control method for a cooking appliance according to a preferred embodiment of this application;

[0110] Figure 11 This is another part of a flowchart of a control method for a cooking appliance according to a preferred embodiment of this application;

[0111] Figure 12 This is a further part of a flowchart illustrating a preferred embodiment of a cooking appliance control method according to this application; and

[0112] Figure 13 This is a flowchart of a control method for a cooking appliance according to another preferred embodiment of this application.

[0113] Explanation of reference numerals in the attached figures:

[0114] 100: Pot body 101: Inner pot

[0115] 102: Lid opening torsion spring; 104: Insulation cover

[0116] 110: Cover body; 110a: Steam passage

[0117] 110b: Steam hole; 110c: Guide surface

[0118] 111: Cover 111a1: First receiving cavity

[0119] 111a2: Second receiving cavity; 112: Liner

[0120] 113: Inner cover; 1131: Inner cover sealing ring

[0121] 114: Steam valve; 116: Control circuit board

[0122] 117: Cover body; 120: Electric pressure relief device

[0123] 121: Pressure ball; 122: Pressure relief drive component

[0124] 123: Top rod; 130: Cover locking and opening assembly

[0125] 131: Fastener; 132: Rotating bracket

[0126] 132a: Guide hole; 132b: Limiting hole

[0127] 132c: Trigger part; 132d: Transmission boss

[0128] 132e: Transmission hole; 132g: First clearance gap

[0129] 132h: Frame; 132i: Functional beam

[0130] 132j: Connecting crossbeam; 132k: First connecting longitudinal beam

[0131] 132m: Second connecting longitudinal beam; 132n: Second clearance gap

[0132] 132p: Clearance groove; 132r: Intersection section

[0133] 133: Transmission connector 133a: First end

[0134] 133a1: Limiting boss; 133b: Second end

[0135] 133c: Connecting shaft; 134: Drive motor

[0136] 134a: Motor shaft; 134b: Limiting recess.

[0137] 135: Force transmission component; 136: Float component

[0138] 137: Guide connector; 140: Position detection device

[0139] 141: Engagement position detection device; 142: Disengagement position detection device

[0140] 158: Battery storage component; 160: Cover latch.

[0141] P1: First extreme position P2: Second extreme position

[0142] AX: Rotation axis; AX1: First axis

[0143] AX2: Second axis; R1: First direction of rotation

[0144] R2: Second rotation direction; D1: Forward / backward direction

[0145] D2: Left / Right Direction; D3: Height Direction Detailed Implementation

[0146] In the following description, numerous specific details are set forth to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that embodiments of this application may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with embodiments of this application.

[0147] To fully understand the embodiments of this application, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art.

[0148] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of this application. The singular forms “a,” “an,” and “the” / “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0149] The ordinal numbers such as "first" and "second" used in this application are merely identifiers and have no other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this application are for illustrative purposes only and are not intended to be limiting.

[0150] The terms “parallel” / “perpendicular” and similar expressions used in this application include absolute parallel / perpendicular relationships and approximately parallel / perpendicular relationships (e.g., relationships that differ from absolute parallel / perpendicular relationships by a range of -5° to +5°), and have equivalent effects.

[0151] The specific embodiments of this application will be described in more detail below with reference to the accompanying drawings, which illustrate representative embodiments of this application and are not intended to limit this application.

[0152] like Figures 1 to 9 As shown, this application provides a pressure cooking appliance. The pressure cooking appliance may include a pot body 100, a lid 110, an electric pressure relief device 120, a position detection device 140, a cooking cavity detection device, a control unit, and a power storage device 158.

[0153] The pot body 100 is used for cooking food. The lid 110 is used to cover the pot body 100. For example, the lid 110 is connected to the pot body 100 in an openable and closable manner to cover the pot body 100. When the lid 110 covers the pot body 100, a cooking space is formed between the lid 110 and the pot body 100.

[0154] The cooker body 100 includes a pot 101, a heating device (not shown), a control unit, and a pressure detection device (not shown). The pot 101, used to hold food, is removably installed in the cooker body 100. When the lid 110 closes the cooker body 100, a cooking space is formed between the lid 110 and the pot 101. The cooking space can also be referred to as a cooking cavity. The heating device can be configured as a heating plate, heating coil, or other heating device. The heating device is located at the bottom of the cooker body 100 and below the pot 101 to heat the food in the pot 101. The control unit can be a microcontroller unit (MCU) for controlling the cooking process of the pressure cooker. The control unit can be located on a control circuit board 116, which will be described below. The cooking cavity detection device, also referred to as a cooking cavity environment detection device, is used to detect the temperature or pressure of the cooking space or related to the cooking space. The temperature or pressure here can be instantaneous temperature or instantaneous pressure. The cooking cavity detection device can be a temperature detection device or a pressure detection device. The temperature detected by the temperature sensing device needs to be calculated, converted, or looked up in a table to determine the gas pressure value. The gas pressure sensing device can directly detect the gas pressure value. The temperature sensing device can include a bottom temperature sensing device and a top temperature sensing device. The bottom temperature sensing device can be located at the bottom or side of the pot body. The bottom temperature sensing device is used to directly or indirectly detect the temperature at the bottom of the cooking space. The top temperature sensing device, for example, is located on the lid and is used to detect the temperature at the top of the cooking space. Both the heating element and the temperature sensing device are electrically connected to the control unit. The temperature sensing device feeds back the sensed temperature information to the control unit, allowing the control unit to achieve more precise control over components such as the heating element based on the temperature information. The control unit can determine the instantaneous gas pressure based on the received temperature information using methods such as looking up a table, thereby converting the instantaneous temperature into gas pressure.

[0155] See Figures 2 to 4 In this application, one end of the lid 110 in the front-rear direction D1 is rotatably connected to the pot body 100 via a pivot axis about the rotation axis AX. An opening torsion spring 102 is disposed on the pivot axis. The two ends of the opening torsion spring 102 abut against the lid 110 and the pot body 100 respectively, allowing the opening torsion spring 102 to apply an elastic force away from the pot body 100 to the lid 110. When the lid 110 is opened, the lid 110 can spring upwards and rotate about the pivot axis under the elastic force of the opening torsion spring 102. The other end of the lid 110 in the front-rear direction D1 is detachably connected to the pot body 100 via a lid-closing hook 160, such as... Figure 3 and Figure 4 As shown.

[0156] See Figure 2The lid 110 includes a top cover 111, a liner 112, and an inner cover 113. In addition, the lid 110 may also include electrical components, valve components, etc. Therefore, the assembly of the top cover 111, liner 112, and inner cover 113 can also be referred to as the lid body 117. It is understood that the lid body 117 may only have the degree of freedom to rotate about the axis of rotation AX relative to the cookware body 100. The top cover 111 is located at the outermost (i.e., uppermost) side of the lid body 110, forming the outer shell of the lid body 110. The liner 112 is located below the top cover 111 and is connected to the top cover 111. For example, the liner 112 can be connected to the top cover 111 via fasteners, snap-fit ​​connectors, etc. The liner 112 is mainly used to centrally mount various functional components of the lid body 110 that sense and control the working status of the pressure cooking appliance, such as sensors. The inner cover 113 is located at the innermost (i.e., lowest) side of the cover body 110 and is positioned below the liner 112. The inner cover 113 is detachably connected to the liner 112 via a snap-fit ​​or other detachable connector for easy cleaning and replacement. The inner cover 113 is oriented towards the cooking space. That is, when the cover body 110 is closed on the pot body 100, the inner cover 113 is positioned directly above the cooking space. Furthermore, an inner cover sealing ring 1131 is provided on the outer periphery of the inner cover 113. The inner cover sealing ring 1131 is used to seal the gap between the inner cover 113 and the pot body 101 when the inner cover 113 is closed with the pot body 101.

[0157] See Figure 2 The cover 111 may further include a cover body 111a and a panel 111b. In one example, a first receiving cavity 111a1 and a second receiving cavity 111a2 are formed between the cover body 111a and the panel 111b. The first receiving cavity 111a1 may be recessed on the upper surface of the cover body 111a and have a raised structure on the lower surface of the cover body 111a. The first receiving cavity 111a1 may accommodate a control circuit board 116. The control circuit board 116 includes a control unit. The first receiving cavity 111a1 may be referred to as a circuit board receiving structure or a circuit board receiving portion. The second receiving cavity 111a2 may accommodate a battery storage device 158.

[0158] In another example, not shown, a first receiving cavity 111a1 is formed between the cover body 111a and the panel 111b. The first receiving cavity 111a1 can accommodate the control circuit board 116 and the energy storage device 158. The energy storage device 158 is, for example, integrated into the control circuit board 116.

[0159] See Figures 2 to 4For example, a steam valve 114 is provided on the cover 110. The steam valve 114 has a steam vent (not shown in the figure) that communicates with the outside environment. A steam passage 110a, communicating with the steam valve 114, is also provided inside the cover 110. The cooking space is connected to the external environment through the steam passage 110a and the steam valve 114. The external environment refers to the environment outside the pressure cooking appliance. In this application, the steam valve 114 is used to connect the cooking space with the external environment to release the steam generated during cooking.

[0160] An electric pressure relief device 120 is disposed on the cover 110. The electric pressure relief device 120 has an open state for opening the steam passage 110a and a closed state for closing the steam passage 110a. A temperature detection device is used. A control unit is electrically connected to the temperature detection device and the electric pressure relief device 120. The control unit is configured to control the electric pressure relief device 120 to switch between the open and closed states based on the temperature detected by the temperature detection device within the cooking space. A power storage device 158 is electrically connected to the control unit and the electric pressure relief device 120. The power storage device 158 stores electricity when the cooking appliance is connected to mains power and can supply power to the control unit and the electric pressure relief device 120 when the cooking appliance is disconnected from mains power.

[0161] According to the pressure cooking appliance of this application, the control unit can control the electric pressure relief device 120 to switch between open and closed states based on the temperature detected by the temperature detection device in the power-on and power-off states, thereby relieving pressure in the cooking space, which can greatly reduce the pressure and safety risks in the cooking space, thus improving the safety of the pressure cooking appliance and greatly improving the user experience.

[0162] See Figure 4 For example, the electric pressure relief device 120 may include a pressure ball 121 and a pressure relief drive 122. The pressure ball 121 is movably disposed on the cover 110. The pressure ball 121 can move between an open position and a closed position. When in the open position, the pressure ball 121 opens the steam passage 110a. When in the closed position, the pressure ball 121 closes the steam passage 110a. When the pressure ball 121 is in the open position, the electric pressure relief device 120 is in the open state. When the pressure ball 121 is in the open position, the steam passage 110a connects to the external environment and the cooking space, thereby balancing or relatively balancing the air pressure of the external environment with the air pressure of the cooking space. When the pressure ball 121 is in the closed position, the electric pressure relief device 120 is in the closed state. When the pressure ball 121 is in the closed position, the steam passage 110a is blocked by the pressure ball 121, thereby disconnecting the cooking space from the external environment to enable cooking functions requiring pressurization or pressure increase. The pressure relief drive 122 is driven to the pressure ball 121. The pressure relief drive 122 is used to actuate the pressure ball 121 to change the position of the pressure ball 121.

[0163] According to this application, the electric pressure relief device 120 specifically drives the pressure ball 121 to move between an open position and a closed position via the pressure relief drive 122, thereby achieving switching between the open and closed states. When the pressure ball 121 is in the open position, the pressure cooking appliance can release pressure.

[0164] See Figures 4 to 7 Optionally, the pressure relief actuator 122 is a push-pull electromagnet. The push-pull electromagnet includes a coil and an iron core. When the coil is energized, the iron core extends or retracts, thereby pushing or pulling the pressure ball 121. When the coil is de-energized, the iron core retracts or extends, thereby pulling or pushing the pressure ball 121. In one example, the pressure ball 121 is in the open position when the coil is de-energized. In another example, the pressure ball 121 is in the closed position when the coil is de-energized.

[0165] In some embodiments, the core of the electromagnet directly or indirectly abuts against the pressure ball 121. When pressure is not required in the cooking space or pressure relief is required, the core pushes the pressure ball 121 away from the steam passage 110a, i.e., it remains open. When pressure is required in the cooking space or pressure relief is not required, the core of the electromagnet retracts, and the pressure ball 121 blocks the steam passage 110a.

[0166] See Figure 4 In this embodiment, the steam passage 110a includes a steam hole 110b for the flow of steam. A guide surface 110c is provided within the steam passage 110a. The guide surface 110c is located at least on the side of the steam hole 110b furthest from the push-pull electromagnet. The following description will further elaborate on the state where the lid 110 is closed to the pot body 100. The guide surface 110c can be configured as an inclined surface in the height direction D3 of the pressure cooking appliance. The lowest point of the guide surface 110c is arranged corresponding to the outlet of the steam hole 110b of the steam passage 110a. When the coil is energized, the iron core retracts, and the pressure ball 121 is located at the outlet of the steam hole 110b to block the steam passage 110a. When the coil is de-energized, the iron core extends, pushing the pressure ball 121 to a higher position on the guide surface 110c, and the pressure ball 121 opens the steam hole 110b.

[0167] According to this application, the pressure ball 121 is actuated by using a push-pull electromagnet as the pressure relief drive 122, which is simple and convenient.

[0168] Continue reading Figure 4 Optionally, the electrically operated pressure relief device 120 may include a push rod 123. One end of the push rod 123 is connected to a pressure ball 121. The other end of the push rod 123 is connected to a push-pull electromagnet. For example, the other end of the push rod 123 is connected to the core of the push-pull electromagnet.

[0169] According to this application, by adding a push rod 123 between the pressure ball 121 and the push-pull electromagnet, the flexibility of the electromagnet and the pressure ball 121 in physical space can be improved.

[0170] Optionally, the energy storage device 158 is a capacitor. This capacitor can be a capacitor that is originally built into the circuit structure or control circuit board 116, or it can be a separately installed capacitor.

[0171] Optionally, the energy storage device 158 is a battery.

[0172] To reduce heat loss during cooking, the pot body 100 includes a heat insulation cover 104, such as... Figure 2 As shown. In this design, the fastening element 131 can engage with the edge of the inner pot 101 or the edge of the insulation cover 104. For example, in a rice cooker, the fastening element 131 can engage with the edge of the inner pot 101. For example, in an electric pressure cooker, the edge of the insulation cover 104 is at least partially exposed, and the fastening element 131 can engage with the edge of the insulation cover 104. For ease of explanation, the following description will focus on the example of the fastening element 131 engaging with the edge of the inner pot 101.

[0173] See Figure 2For example, with the lid 110 closed on the pot body 100, a cooking space is formed between the inner pot 101 and the inner lid 113. The pressure cooker may also include a lid locking / unlocking assembly 130 and a power source. The lid locking / unlocking assembly 130 is connected to the power source to switch between a locked and unlocked state under the drive of the power source. In the locked state, the lid locking / unlocking assembly 130 prevents the inner lid 113 of the lid 110 from separating from the inner pot 101. In the unlocked state, the lid locking / unlocking assembly 130 allows the inner lid 113 to separate from the inner pot 101. The inner lid 113 has a radial direction and an axial direction. The radial direction is the radial direction of a circle about the geometric center of the inner lid 113. The axial direction is a direction passing through the geometric center of the inner lid 113 and parallel to the thickness direction of the inner lid. The lid locking / unlocking assembly 130 includes a fastening element 131. The fastening element 131 may also be referred to as a hook, latch, or fastener. The fastening element 131 is movably connected to the cover body 110 in a fastened position and a disengaged position along the radial direction of the inner cover 113. The locking and opening assembly 130 is in a fastened state when the fastening element 131 is in the fastened position. The locking and opening assembly 130 is in a disengaged state when the fastening element 131 is in the disengaged position. The fastening element 131 may include a clamp for receiving the edge of the inner pot 101 and the edge of the inner cover 113. When the fastening element 131 is in the fastened position, the edge of the inner pot 101 and the edge of the inner cover 113 are clamped in the clamp to limit the inner pot 101 and the inner cover 113 in the height direction D3 of the pressure cooking appliance, thereby preventing the inner pot 101 and the inner cover 113 from disengaging from each other, and thus ensuring that the cooking space can be pressurized. When the fastening element 131 is in the disengaged position, the clamp disengages from at least one of the edges of the inner pot 101 and the inner cover 113. Preferably, the fastening element 131 in the disengaged position is disengaged from the inner pot 101. The power source can be a drive motor 134. The drive motor 134 is driven to the fastening member 131. The drive motor 134 is connected to the control unit to drive the fastening member 131 to move between the fastened position and the disengaged position under the control of the control unit.

[0174] According to this application, the fastening member 131 is moved between a fastened position and a disengaged position by a drive motor 134, thereby changing the connection state between the fastening member 131 and the inner cover 113 and the pot liner 101. When the fastening member 131 is in the fastened position, it can prevent the inner cover 113 and the pot liner 101 from separating, so that the pot liner 101, the inner cover 113, and the fastening member 131 can share the pressure. When the fastening member 131 is in the disengaged position, it can allow the inner cover 113 to separate from the pot liner 101, thereby facilitating the opening of the lid 110.

[0175] It is understandable that the drive motor 134 consumes a significant amount of electrical energy during the movement of the fastening member 131. In the power-off state, the energy stored in the battery 158 is sufficient to meet the pressure relief requirements of the electric pressure relief device 120. If the battery 158 is empty or insufficient to power the drive motor 134 after the electric pressure relief device 120 has completed pressure relief, the drive motor 134 will not operate.

[0176] Continue reading Figures 2 to 7 Furthermore, the cover opening assembly 130 may also include a rotating frame 132. The rotating frame 132 is rotatably connected to the cover body 110 about a first axis AX1. The rotating frame 132 may include a guide hole 132a. The extending direction of the guide hole 132a intersects the radial direction of the cover body 110. The extending direction of the guide hole 132a may be a straight line or a curved direction. The fastening member 131 is slidably connected to the guide hole 132a along the extending direction of the guide hole 132a. The rotating frame 132 is drively connected to the drive motor 134.

[0177] According to this application, a rotating frame 132 is provided between the drive motor 134 and the fastening member 131, so that the power of the drive motor 134 is transmitted to the fastening member 131 through the rotating frame 132, thereby driving the fastening member 131 to move by rotating the rotating frame 132. During the process of the drive motor 134 driving the rotating frame 132 to rotate, the fastening member 131 slides relative to the rotating frame 132 along the extension direction of the guide hole 132a, thereby realizing the movement of the fastening member 131 between the fastening position and the disengaging position.

[0178] See Figures 2 to 7 Optionally, the fastening member 131 is connected to the guide hole 132a via a guide connector 137. The guide connector 137 may include fasteners such as screws or bolts. The guide connector 137 is connected to the fastening member 131. The guide connector 137 is located in the guide hole 132a and is movable relative to the guide hole 132a. During the rotation of the rotating frame 132, the fastening member 131 slides relative to the rotating frame 132 along the extension direction of the guide hole 132a through the sliding engagement of the guide connector 137 and the guide hole 132a, thereby causing the fastening member 131 to be driven by the rotating frame 132 to move in the radial direction of the inner cover 113.

[0179] See Figure 3 , Figures 6 to 8Furthermore, the cover-opening assembly 130 may also include a drive transmission assembly. The drive transmission assembly is connected between the rotating frame 132 and the motor shaft 134a of the drive motor 134 to transmit power that causes the rotating frame 132 to rotate. The drive transmission assembly includes a transmission connector 133. The transmission connector 133 has opposite first ends 133a and second ends 133b. The first end 133a is rotatably connected to the cover 110 about a second axis AX2. The first end 133a is connected to the motor shaft 134a of the drive motor 134 to rotate synchronously with the motor shaft 134a. The second end 133b is movably connected to the rotating frame 132. The second axis AX2 is parallel to the first axis AX1. During the rotation of the motor shaft 134a of the drive motor 134, the transmission connector 133 rotates in the same direction as the motor shaft 134a of the drive motor 134. During the rotation of the motor shaft 134a of the drive motor 134, the rotation direction of the transmission connector 133 is opposite to the rotation direction of the rotating frame 132. like Figure 6 As shown, the motor shaft 134a has a first rotation direction R1 and a second rotation direction R2. The first rotation direction R1 and the second rotation direction R2 are opposite. The first rotation direction R1 can be understood as counterclockwise. Correspondingly, the second rotation direction R2 can be understood as clockwise. During the rotation of the transmission connector 133 along the motor shaft 134a in the first rotation direction R1, the rotating frame 132 rotates in the second rotation direction R2, which is opposite to the first rotation direction R1, causing the fastening member 131 to move towards the fastening position. During the rotation of the transmission connector 133 along the motor shaft 134a in the second rotation direction R2, the rotating frame 132 rotates in the first rotation direction R1, causing the fastening member 131 to move towards the disengagement position.

[0180] According to this application, a transmission connector 133 is added between the drive motor 134 and the rotating frame 132 to transmit the power of the drive motor 134 to the rotating frame 132 through the transmission connector 133, thereby facilitating the reasonable arrangement of the positions of the rotating frame 132 and the drive motor 134.

[0181] See Figure 6 and Figure 7 Optionally, the drive motor 134 can drive the transmission connector 133 to rotate along the second rotation direction R2 to the first limit position P1, thereby causing the rotating frame 132 to rotate to the position shown in the image. Figure 7The third extreme position is shown, which causes the fastener 131 to move to the disengaged position. When the rotating frame 132 rotates to the third extreme position, the trigger part 132c on the rotating frame 132 is detected by the disengaged position detection device 142, thereby generating a disengaged position signal and sending it to the control unit. The control unit determines that the fastener 131 is in the disengaged position based on the disengaged position signal. The drive motor 134 can drive the transmission connector 133 to rotate along the first rotation direction R1 to the second extreme position P2, thereby causing the rotating frame 132 to rotate to the third extreme position. Figure 6 The fourth extreme position, as shown, causes the fastening member 131 to move to the fastening position. When the rotating frame 132 rotates to the fourth extreme position, the trigger part 132c on the rotating frame 132 is detected by the fastening position detection device 141, thereby generating a fastening position signal and sending it to the control unit. The control unit determines that the fastening member 131 is in the fastening position based on the fastening position signal.

[0182] See Figure 3 , Figure 6 as well as Figure 7 Optionally, the pressure cooker may also include a manual rotating frame drive mechanism. The manual rotating frame drive mechanism includes a manual part or element such as a force transmission member 135. This force transmission member 135 is connected to a first end 133a. The force transmission member 135 extends from the outer surface of the lid body 117 to be operable by the user. The first end 133a is the end of the transmission connector 133 away from the rotating frame 132. By manually applying a torsional force to the transmission connector 133 at the force transmission member 135, the rotating frame 132 can be driven to rotate, thereby moving the fastener 131 to the disengaged position. In the event of a power outage or other factors that prevent the drive motor 134 from operating, the user can adjust the fastener 131 to the disengaged position by manipulating the force transmission member 135, thereby disengaging the inner lid 113 from the pot liner 101. In the event of a power outage, if the electrical energy stored in the energy storage device 158 is sufficient to power the electric pressure relief device 120 for pressure relief, but insufficient to drive the motor 134, the user can adjust the fastening member 131 to the disengaged position by moving the force transmission member 135, thereby detaching the inner cover 113 from the pot liner 101. Preferably, the force transmission member 135 can be manufactured as an integral part with the transmission connector 133. In the case where the force transmission member 135 is manually operated by the user, it can be referred to as a lever or actuating element.

[0183] See Figure 3 , Figure 8 as well as Figure 9Optionally, the first end 133a has a hole for connecting the motor shaft 134a of the drive motor 134. The motor shaft 134a and the first end 133a can be connected by a snap-fit ​​or other connection. Taking a snap-fit ​​connection as an example, the motor shaft 134a includes a limiting recess 134b, and correspondingly, the inner wall of the hole in the first end 133a is provided with a limiting boss 133a1. Through the cooperation of the limiting recess 134b and the limiting boss 133a1, the first end 133a can be snapped into the motor shaft 134a, and the first end 133a can be prevented from disengaging from the motor shaft 134a.

[0184] Optionally, the transmission connector 133 extends in a direction intersecting the second axis AX2. In the direction perpendicular to the extension direction of the transmission connector 133 and the second axis AX2, the dimension of the first end 133a is larger than the dimension of the second end 133b, making the outer contour of the transmission connector 133 gourd-shaped. In other words, the first end 133a is wider or thicker than the second end 133b. This ensures the strength of the connection structure between the transmission connector 133 and the motor shaft 134a. At the same time, it saves space occupied by the second end 133b of the transmission connector 133, thereby reducing or avoiding interference between the second end 133b and adjacent structures, and improving the flexibility of movement of the second end 133b.

[0185] See Figure 3 , Figures 5 to 7 Optionally, the float member 136 can be movably mounted on the cover body 117 of the cover 110 or other fixed structure of the cover 112 or the cover body 110. The cover body 117 includes the cover 112. Next, we will describe an example where the float member 136 is movably mounted on the cover 112. The cover 112 has a float mounting hole (not shown). The float member 136 is installed in the float mounting hole. The rotating frame 132 is located between the cover 112 and the top cover 111. The rotating frame 132 has a limiting hole 132b. When the fastener 131 is in the fastened position, the limiting hole 132b and the float mounting hole are aligned. When pressure is applied to the cooking space, the float member 136 moves upward and inserts into the limiting hole 132b under the pressure difference between the cooking space and the external environment. At this time, the float member 136, connected to the float mounting hole and the limiting hole 132b, can prevent the rotating frame 132 from rotating. This prevents the rotating frame 132 from rotating when the cooking space is under pressure. When the cooking space is under normal pressure, the float component 136 disengages from the limiting hole 132b. At this time, the rotating frame 132 can rotate relative to the cover 112.

[0186] See Figures 3 to 7Furthermore, the position detection device 140 of the pressure cooking appliance includes an engaged position detection device 141 and a disengaged position detection device 142. The engaged position detection device 141 generates an engaged position signal when the rotating frame 132 rotates to the engaged position, causing the fastener 131 to move to the engaged position. The disengaged position detection device 142 generates a disengaged position signal when the rotating frame 132 rotates to the disengaged position, causing the fastener 131 to move to the disengaged position. Both the engaged position detection device 141 and the disengaged position detection device 142 can be limit switches or position sensors. Both are electrically connected to a control unit. The control unit is configured to control the operating state of the drive motor 134 based on the engaged position signal detected by the engaged position detection device 141 and the disengaged position signal detected by the disengaged position detection device 142. The operating state of the drive motor 134 includes rotation and stopping of the motor shaft 134a.

[0187] Optionally, the position detection device 140 may include an engagement position detection device 141 and a disengagement position detection device 142. The engagement position detection device 141 generates an engagement position signal when the rotating frame 132 rotates to a position where the engaging member 131 moves to the engagement position. The disengagement position detection device 142 generates a disengagement position signal when the rotating frame 132 rotates to a position where the engaging member 131 moves to the disengagement position. Both the engagement position detection device 141 and the disengagement position detection device 142 may be limit switches, position sensors, or micro switches.

[0188] exist Figure 2 , Figure 3 , Figure 6 ,as well as Figure 7 In the example shown, the drive motor 134 is located at one end of the cover 110 along the front-rear direction D1, near the rotation axis AX. The drive motor 134 is also located in the middle of the cover 110 in the left-right direction D2. The engagement position detection device 141 and the disengagement position detection device 142 are located at one end of the cover 110 in the left-right direction D2, specifically on the same side of the cover 110 as the drive motor 134 in the left-right direction D2.

[0189] In other examples not shown, the engagement position detection device 141 and the disengagement position detection device 142 are located on both sides of the drive motor 134 in the left-right direction D2 of the cover 110.

[0190] See Figure 3 , Figures 5 to 7Optionally, the rotating frame 132 may include a trigger portion 132c. A latching position detection device 141 is located on one side of the trigger portion 132c in the circumferential direction surrounding the first axis AX1. The latching position detection device 141 is used to detect the position signal of the trigger portion 132c when the latching member 131 is in the latching position. That is, by detecting whether the rotating frame 132 has rotated to the correct position, the latching member 131 is indirectly determined to have reached the latching position. A disengagement position detection device 142 is located on the other side of the trigger portion 132c in the circumferential direction surrounding the first axis AX1. The disengagement position detection device 142 is used to detect the position signal of the trigger portion 132c when the latching member 131 is in the disengagement position. That is, by detecting whether the rotating frame 132 has rotated to the correct position, the disengagement position detection device 142 is indirectly determined to have reached the disengagement position. The trigger portion 132c is located at the edge of the rotating frame 132. The trigger part 132c and the aforementioned transmission hole 132e are arranged at intervals in the circumferential direction around the first axis AX1.

[0191] See Figure 5 Optionally, the rotating frame 132 may include a frame 132h and a functional beam 132i located inside the frame 132h. Both ends of the functional beam 132i are connected to the frame 132h. A limiting hole 132b is provided on the functional beam 132i or at the intersection of two functional beams 132i. When the rotating frame 132 is not rotated to a position where the fastening member 131 is in the fastening position, the position of the float member 136 is offset from the position of the limiting hole 132b.

[0192] According to this application, when the rotating frame 132 is not rotated into place along the direction of the snap-on cover, the position of the float component 136 is offset from the limiting hole 132b, thereby preventing the float component 136 from interfering with the rotating frame 132, preventing the rotating frame 132 from being jammed by the float component 136, and ensuring that the rotating frame 132 can be rotated smoothly.

[0193] See also Figure 5Preferably, the rotating frame 132 includes multiple functional beams 132i. The multiple functional beams 132i include a connecting crossbeam 132j, a first connecting longitudinal beam 132k, and a second connecting longitudinal beam 132m. A first axis AX1 is located at the middle of the connecting crossbeam 132j. The first connecting longitudinal beam 132k and the second connecting longitudinal beam 132m are located on opposite sides of the first axis AX1. Both the first connecting longitudinal beam 132k and the second connecting longitudinal beam 132m intersect with the connecting crossbeam 132j. A limiting hole 132b is provided at the intersection of the connecting crossbeam 132j ​​and the first connecting longitudinal beam 132k. This enhances the structural strength of the rotating frame 132 at the limiting hole 132b. The connecting crossbeam 132j ​​can be considered as the main beam inside the frame 132h. Accordingly, the first connecting longitudinal beam 132k and the second connecting longitudinal beam 132m can be considered as reinforcing beams, used to increase the force transmission path between the main beam and the frame 132h, and improve the balance of structural strength of each part of the frame 132h.

[0194] Optionally, the rotating frame 132 may include a junction 132r. The junction 132r is formed at the intersection of the connecting crossbeam 132j ​​and the first connecting longitudinal beam 132k. The junction 132r is configured as a ring structure. A limiting hole 132b forms the inner hole of the junction 132r. Here, the junction 132r can be understood as a ring-shaped reinforcing rib formed with the limiting hole 132b as the center. On the one hand, it surrounds and forms the limiting hole 132b, and on the other hand, it can strengthen the structural strength at the intersection of the connecting crossbeam 132j ​​and the first connecting longitudinal beam 132k.

[0195] In the figure, the rotating frame 132 includes four guide holes 132a, which are spaced apart circumferentially. The two ends of the first connecting longitudinal beam 132k are connected to the frame 132h at two of the guide holes 132a. The two ends of the second connecting longitudinal beam 132m are connected to the frame 132h at the remaining two guide holes 132a. This improves the structural strength of the frame 132h at the guide holes 132a.

[0196] In some embodiments, the rotating frame 132 may not include the first connecting longitudinal beam 132k and the second connecting longitudinal beam 132m. The first axis AX1 passes through the middle of the connecting crossbeam 132j. The connecting crossbeam 132j ​​serves as a support beam connected within the frame 132h, and is used to transmit force between the first axis AX1 and the frame 132h.

[0197] Continue reading Figure 5In addition, the rotating frame 132 also has clearance gaps. These clearance gaps are used to avoid hardware structures on the cover body 110. The hardware structures include circuit boards, steam valves 114, electric pressure relief devices, etc. The clearance gaps are formed between at least two of the connecting crossbeam 132j, the first connecting longitudinal beam 132k, and the second connecting longitudinal beam 132m and the frame 132h. The clearance gaps include a first clearance gap 132g and a second clearance gap 132n. The first clearance gap 132g is used to avoid the steam valve 114. The second clearance gap 132n is used to avoid the downward protrusion of the cover body 111a at the first receiving cavity 111a1. The connecting crossbeam 132j ​​is located above the electric pressure relief device 120. A clearance groove 132p is formed on the lower surface of the connecting crossbeam 132j, which is used to avoid the electric pressure relief device 120. By setting the first clearance gap 132g, the second clearance gap 132n, and the clearance groove 132p, the compactness of the internal structure of the cover 110 can be improved, the space utilization rate can be increased, and the overall thickness of the cover 110 can be reduced.

[0198] See Figure 2 , Figure 3 as well as Figure 5 Furthermore, the rotating frame 132 has a transmission hole 132e. The transmission connector 133 also has a connecting shaft 133c. The connecting shaft 133c is inserted into the transmission hole 132e. The transmission hole 132e provides allowance for the connecting shaft 133c to move radially relative to the rotating frame 132. For example, the transmission hole 132e can be configured as an elongated hole extending radially in a circle centered on the first axis AX1, to allow the connecting shaft 133c to move within the transmission hole 132e, thereby preventing jamming of the rotation of the rotating frame 132 and the rotation of the transmission connector 133. The transmission hole 132e can be a through hole or a blind hole. The transmission hole 132e is located at the edge of the rotating frame 132. While the connecting shaft 133c drives the rotating frame 132 to rotate, it can slide or move within the transmission hole 132e along its length.

[0199] It is understandable that in other examples, the positions of the transmission hole and the connecting shaft can be interchanged; that is, the transmission hole can be set in the transmission connector, and the connecting shaft can be set in the rotating frame.

[0200] Furthermore, the rotating frame 132 also includes a drive boss 132d. The drive boss 132d has an engaged state that engages with the lid latch 160 and a disengaged state that disengages from the lid latch 160. In the engaged state, the drive boss 132d prevents external force from successfully pressing the lid opening button (not shown), thereby preventing the lid 110 from being opened. In the disengaged state, the drive boss 132d allows external force to successfully press the lid opening button, thereby allowing the lid 110 to be opened under the elastic force of the lid opening torsion spring 102. Specifically, when the lid 110 is closed on the pot body 100, when the rotating frame 132 rotates along the second rotation direction R2 (the motor shaft 134a rotates in the first rotation direction R1) to such a state... Figure 6 At the fourth extreme position shown, the fastening member 131 moves to the fastening position, and the transmission boss 132d engages with the lid hook 160. With the lid 110 closed on the pot body 100, when the rotating frame 132 rotates along the first rotation direction R1 (the motor shaft 134a rotates in the second rotation direction R2) to the position shown... Figure 7 At the third extreme position shown, the fastener 131 moves to the disengaged position, and the transmission boss 132d separates from the cover hook 160. It should be noted that the rotating bracket 132 rotates freely. Figure 7 Rotate to the third extreme position as shown Figure 6 The angle of the fourth extreme position shown is less than or equal to the central angle of the circle centered on the first axis AX1 corresponding to the guide hole 132a. The central angle of the circle centered on the first axis AX1 corresponding to the transmission boss 132d can be less than or equal to the central angle corresponding to the guide hole 132a.

[0201] See Figures 10 to 13 This application provides a control method for a cooking appliance. This control method can be executed by the control unit described above. The cooking appliance includes a pot body 100 and a lid 110. The pot body 100 is provided with a pot inner 101 for holding food. The lid 110 is closably connected to the pot body 100 and forms a cooking cavity between the lid 110 and the pot inner 101. The lid 110 is provided with a drive motor 134, a rotating frame 132, and a fastening member 131. The rotating frame 132 is connected to the drive motor 134 and can be driven by the drive motor 134 to rotate. The fastening member 131 is connected to the rotating frame 132 and can be driven by the rotating frame 132 to move between a fastened position and a disengaged position. The lid 110 is provided with a fastening position detection device 141 corresponding to the fastening position. The fastening position detection device 141 is electrically connected to the control unit.

[0202] The control method includes the following steps:

[0203] S1: Determine whether a latching position signal has been received from the latching position detection device 141. If no latching position signal is received, proceed to step S2.

[0204] S2: Detects the air pressure value in the cooking cavity.

[0205] S3: Determine whether the air pressure value is greater than the first preset air pressure threshold. If the air pressure value is greater than the first preset air pressure threshold, proceed to step S31; otherwise, proceed to step S32.

[0206] S31: Control the execution of the pressure relief procedure;

[0207] S32: Continue to determine whether the preset target air pressure value corresponding to the current cooking function is greater than the second preset air pressure threshold. If the preset target air pressure value corresponding to the current cooking function is greater than the second preset air pressure threshold, then execute step S321; otherwise, execute step S322.

[0208] S321: Output a prompt message to remind users to use the manual locking method to lock the lid.

[0209] S322: Controls the execution of atmospheric pressure cooking function.

[0210] In step S3, the first preset pressure threshold is the standard atmospheric pressure of the location where the cooking appliance is used. Determining whether the cooking cavity is pressurized is crucial for the safe use of the cooking appliance. By prioritizing the detection of whether the cooking cavity is pressurized, appropriate control operations can be performed more promptly.

[0211] The second preset pressure threshold in step S32 is a preset pressure value within the cooking appliance used to distinguish whether a cooking function is a pressurized cooking function. Step S32 is used to determine whether the current cooking function is a pressurized cooking function.

[0212] Barometric pressure detection methods can include first detecting the temperature and then converting it into a barometric pressure value, or directly measuring the barometric pressure value using a barometric pressure detection device.

[0213] According to this application, in the event of a lid locking failure, the gas pressure inside the cooking cavity is first detected, and it is determined whether the detected gas pressure is greater than a first preset gas pressure threshold. If the detected gas pressure is greater than the first preset gas pressure threshold, a pressure relief process is executed. If the detected gas pressure is less than or equal to the first preset gas pressure threshold, it is then determined whether the preset target gas pressure value corresponding to the current cooking function is greater than a second preset gas pressure value. If the preset target gas pressure value is greater than the second preset gas pressure value, a prompt message is output to remind the user to manually lock the lid. If the preset target gas pressure value is less than or equal to the second preset gas pressure value, cooking is controlled according to the normal pressure cooking function. This reduces manual intervention, improves the degree of automation in the cooking process and cooking safety, thereby enhancing the user experience.

[0214] Optionally, after executing step S321, it is determined whether a locking position signal has been received within a preset time. If a locking position signal is received, step S3211 is executed; otherwise, step S3212 is executed.

[0215] S3211: Controls the continuation of the cooking process corresponding to the current cooking function.

[0216] S3212: Controls to stop cooking.

[0217] According to this application, the system can determine whether the manual lid is properly locked based on whether a locking position signal is received within a preset time, thereby controlling whether cooking continues. Upon receiving the locking position signal, the system continues the cooking process corresponding to the current cooking function. If no locking position signal is received, the system stops cooking.

[0218] Optionally, the cover 110 is provided with a steam passage 110a. The cover 110 is provided with an electrically operated pressure relief device 120 that can block or open the steam passage 110a according to a control command.

[0219] The control method step S3211 further includes: if a locking position signal is received, controlling the electric pressure relief device 120 to switch to the closed state of blocking the steam passage 110a, and continuing to execute the cooking process corresponding to the current pressurized cooking function.

[0220] According to this application, upon receiving a locking position signal, the electric pressure relief device 120 is switched to a closed state to continue the cooking process with pressure cooking function.

[0221] Optionally, in step S2, the method for detecting the gas pressure value of the cooking cavity is:

[0222] The temperature value of the cooking cavity is detected and converted into a gas pressure value according to a preset formula. The preset formula is a conversion formula between temperature and gas pressure values, which can be a known conversion formula in the prior art. The gas pressure value can also be referred to as the pressure intensity value.

[0223] Alternatively, the cooking appliance may be equipped with a pressure detection device, which detects the pressure value of the cooking cavity and communicates with the control unit.

[0224] According to this application, the air pressure value of the cooking cavity can be obtained by first detecting the temperature value of the cooking cavity and then converting it into an air pressure value according to a preset formula. Alternatively, the air pressure value of the cooking cavity can be directly detected by an air pressure detection device.

[0225] Optionally, the cooking appliance is equipped with a cooking cavity pressure detection device electrically connected to the control unit. The cooking cavity pressure detection device detects the pressure value of the cooking cavity and feeds it back to the control unit.

[0226] According to this application, the pressure value of the cooking cavity is detected by a cooking cavity pressure detection device and fed back to the control unit, thereby enabling the control unit to obtain the pressure value of the cooking cavity.

[0227] Optionally, the cover 110 is provided with an electrically operated pressure relief device 120 that can block or open the steam passage 110a according to a control command.

[0228] During the pressure relief process, the electric pressure relief device 120 is first started and stopped N times to switch the cooking cavity on and off with atmospheric pressure N times, until the pressure inside the cooking cavity equals the first preset pressure threshold. Here, N is a positive integer and N≥2.

[0229] According to this application, intermittent pressure relief is adopted during pressure relief to improve the safety of pressure relief.

[0230] Optionally, after the gas pressure inside the cooking cavity equals a first preset gas pressure threshold, the electric pressure relief device 120 is switched to the open state. The first preset gas pressure threshold is the standard atmospheric pressure at the location where the cooking appliance is used.

[0231] According to this application, during the pressure relief process, when the air pressure inside the cooking cavity drops to a first preset air pressure threshold, the electric pressure relief device 120 is switched to the open state, thereby keeping the cooking cavity connected to atmospheric pressure. This ensures that the air pressure inside the cooking cavity does not exceed the local standard atmospheric pressure, allowing the cooking appliance to enter a cooking stage such as the heat preservation stage, or allowing the lid 110 to be opened. After entering a cooking stage such as the heat preservation stage, the cooking appliance controls the heating device installed on it to heat up according to the settings.

[0232] Optionally, the temperature value of the cooking cavity is detected and converted into a pressure value according to a preset formula. A first preset pressure threshold and a second preset pressure threshold correspond to a first temperature threshold and a second temperature threshold, respectively. The first temperature threshold and the second temperature threshold are obtained by consulting a table showing the temperature-pressure relationship within the cooking cavity.

[0233] In the embodiments of this application, the correspondence between temperature and air pressure inside the cooking cavity is shown in the following table:

[0234] Temperature (°C) Atmospheric pressure (kPa) 99 0 100 5 101 10 102 15 103 20 104 25 105 30 106 35 107 40 108 45 109 50

[0235] According to this application, the detected temperature value of the cooking cavity can be converted into a pressure value for comparison with a first preset pressure threshold. Furthermore, based on the temperature-pressure correspondence table within the cooking cavity, the first preset pressure threshold can be converted into a first temperature threshold, and the second preset pressure threshold can be converted into a second temperature threshold, thereby facilitating direct comparison of the first temperature threshold with the detected temperature value of the cooking cavity.

[0236] Optionally, the first preset pressure threshold corresponds to the standard atmospheric pressure at the location of the cooking appliance. The second preset pressure threshold is a pressure value preset by the cooking appliance to distinguish whether it has a pressurized cooking function.

[0237] According to this application, since the first preset air pressure threshold corresponds to the standard atmospheric pressure of the cooking appliance's location, pressure relief is controlled when the detected air pressure value of the cooking cavity exceeds the standard atmospheric pressure. If the detected air pressure value of the cooking cavity does not exceed the standard atmospheric pressure, the current cooking function is distinguished as a pressurized cooking function based on whether the preset target air pressure value is greater than the second preset air pressure threshold.

[0238] Optionally, the cooking appliance is provided with a prompting element. The lid 110 is provided with a manual part or manual element that is connected to the rotating frame 132 and can drive the rotating frame 132 to rotate.

[0239] In step S321, a prompt message is output by a prompting element to prompt the user to manually lock the lid.

[0240] According to this application, a prompting element is used to output prompting information to prompt the user to manually lock the lid. The prompting element can be an audible alarm device, a visual alarm device, an audible and visual alarm device, or a display component. The manual part or manual element can be the aforementioned force transmission element 135. The release alarm information includes, for example, audible alarm information, visual alarm information, audible and visual alarm information, and alarm information displayed on the display component. The audible alarm information is, for example, a buzzer sounding. The visual alarm information is, for example, a flashing warning light. The audible and visual alarm information is, for example, a combination of a buzzer sounding and a flashing warning light. The alarm information displayed on the display component includes, for example, displaying a fault code, graphic prompts, etc. The manual locking operation involves the user rotating the rotating frame 132 by operating the force transmission element 135, thereby moving the fastening member 131 to the fastening position and locking it in place.

[0241] Optionally, the cooking appliance includes a drive transmission assembly. The rotating rack 132 is connected to the drive motor 134 via the drive transmission assembly.

[0242] According to this application, by connecting the rotating frame 132 to the drive motor 134 via a drive transmission assembly, the rotating frame 132 is driven to rotate by the drive motor 134, thereby causing the fastening member 131 to move between the fastening position and the disengaging position.

[0243] Optionally, the drive transmission assembly includes a transmission connector 133. The driving end of the transmission connector 133 is connected to the output shaft of the drive motor 134. The driven end of the transmission connector 133 is connected to the rotating frame 132 to drive the rotating frame 132 to rotate.

[0244] According to this application, the drive transmission assembly specifically transmits power between the output shaft of the drive motor 134 and the rotating frame 132 through the transmission connector 133.

[0245] Optionally, the cover 110 includes a cover body 117 and a rotating frame 132 connected to the cover body 117. The cover body 117 is provided with a float component 136.

[0246] The rotating frame 132 is provided with a limiting hole 132b for engaging with the float component 136.

[0247] When the fastening member 131 is in the fastening position, the position of the float member 136 is aligned with the position of the limiting hole 132b, or the float member 136 is located in the limiting hole 132b.

[0248] According to this application, a limiting hole 132b is provided in the rotating frame 132, and a float component 136 is provided in the lid body 117. When the fastening member 131 is in the fastened position, that is, when the rotating frame 132 is rotated to the position in the first rotation direction R1, the float component 136 is aligned with the limiting hole 132b. When pressure is applied in the cooking space, the float component 136 can enter the limiting hole 132b. Through the cooperation between the float component 136 and the limiting hole 132b, the rotation of the rotating frame 132 can be stopped, further improving the safety in the pressure cooking mode.

[0249] Optionally, functional beams 132i are provided between the frame edges 132h of the rotating frame 132. A limiting hole 132b is provided at the intersection of the functional beams 132i or two functional beams 132i. When the fastening member 131 is not in the fastened position, the position of the float member 136 is offset from the position of the limiting hole 132b.

[0250] According to this application, if the rotating frame 132 is not rotated into place in the direction that allows the fastening member 131 to move to the fastening position, the position of the float member 136 is misaligned with the limiting hole 132b, so the float member 136 cannot form an anti-rotation engagement with the rotating frame 132 when it is pressed up in the cooking space.

[0251] Embodiments of this application provide a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed, it implements the control method described above.

[0252] According to embodiments of this application, a computer-readable storage medium can store a computer program to implement the above-described control method when executed. When applied to a cooking appliance, in the event of a lid locking failure, the gas pressure value inside the cooking chamber is first detected, and it is determined whether the detected gas pressure value is greater than a first preset gas pressure threshold. If the detected gas pressure value is greater than the first preset gas pressure threshold, a pressure relief process is executed. If the detected gas pressure value is less than or equal to the first preset gas pressure threshold, it is further determined whether the preset target gas pressure value corresponding to the current cooking function is greater than a second preset gas pressure value. If the preset target gas pressure value is greater than the second preset gas pressure value, a prompt message is output to remind the user to manually lock the lid. If the preset target gas pressure value is less than or equal to the second preset gas pressure value, cooking is controlled according to the normal pressure cooking function. This reduces manual intervention, improves the degree of automation in the cooking process and cooking safety, thereby enhancing the user experience.

[0253] The cooking appliance control method according to the embodiments of this application applies to a cooking appliance in which a stepper motor is added to the lid 110 as a drive motor 134, and the motor shaft 134a of the drive motor 134 is connected to the rotating frame 132 through a transmission connector 133. By reversing or rotating the drive motor 134, the fastening member 131 automatically engages or disengages from the inner pot 101 and the lid 110. When the electric pressure relief device 120 is energized, the steam passage 110a is blocked to allow pressure to build up. When the power is off, the electric pressure relief device 120 resets to the state where the steam passage 110a is open. When the control device detects a power failure signal, it stores the cooking stage and the power failure time. The electric pressure relief device 120 is intermittently energized to relieve pressure in the cooking cavity. This greatly reduces the pressure inside the cooking cavity, lowers safety risks, and significantly improves the user experience.

[0254] Upon power restoration, the system first retrieves the cooking function, current cooking stage, and power outage duration before the power failure. It then controls the drive motor 134 to rotate forward for a period to automatically unlock the latch 131. Based on the power outage duration, it determines whether cooking should continue. If cooking continues, it checks the cooking stage before the power failure to determine if pressurization is required. If pressurization is needed, it controls the drive motor 134 to rotate in reverse for a period to automatically lock the latch 131. Simultaneously, it controls the electric pressure relief device 120 to switch to the closed state, blocking the steam passage 110a, to allow pressurization. Then, starting from the current cooking stage, it continues executing the cooking process for all subsequent cooking stages of that function.

[0255] In one application scenario of this application, the technical problem encountered is that the fastening component 131 cannot be locked tightly with the inner pot and the inner lid, that is, the lid is not locked properly. At this time, normal pressure cooking cannot be performed. However, it is impossible to determine whether the position detection device 140 and the drive motor 134 are faulty. Here, as well as in the following text, "locking," "locking the lid," and "locking" can all be understood as the above-mentioned fastening, and correspondingly, "unlocking" and "disengaging" can be understood as the above-mentioned disengaging.

[0256] After the cooking function starts, the control unit first checks whether the latching position detection device 141 is functioning correctly. The latching position detection device 141 is flagged as W1 in the control unit. Initially, flag W1 is, for example, high level "1" or low level "0". If the latching position detection device 141 is determined to be faulty, an alarm message is output. This alarm message may include, for example, an audible and visual alarm, a buzzer sound, a flashing light, and an error code displayed on the display module. The audible and visual alarm can be understood as a combination of a buzzer sound and a flashing light. The display module can be referred to as a display component, and includes display devices such as digital tubes and displays. If the latching position detection device 141 is functioning correctly, the drive motor is controlled to rotate along the first rotation direction R1 until the latching position detection device 141 changes from high level to low level or from low level to high level. This is considered as the latching position detection device 141 generating a latching position signal, indicating that the rotating frame has rotated to the correct position and the latching cover is locked in place. During the rotation of the drive motor 134 along the first rotation direction R1, the control device acquires the flag bit W1 of the position engagement detection element 141 in real time. When engaged, W1 = 0; when not engaged, W1 = 1. The control device monitors the operating current of the drive motor 134 in real time and synchronously detects whether the drive motor 134 outputs an abnormal flag signal. The control device has an abnormal flag bit BIT. When the drive motor 134 generates or outputs an abnormal flag signal, BIT = 1. If the drive motor 134 does not generate or output an abnormal flag signal, BIT = 0.

[0257] In one embodiment, assuming the rotating frame 132 is not jammed and the position detection device 140 itself is functioning correctly, only the motor is faulty, the fault detection principle can be:

[0258] If the control device detects a continuous increase in the operating current of the drive motor 134, it determines that the drive motor 134 is faulty and outputs a fault signal. At this time, the position detection device 140 does not send a position signal back to the control device. This fault signal can be referred to as an abnormality indicator signal.

[0259] The control device controls the drive motor 134 to rotate in the first rotation direction R2 to lock the lid. If the position detection device 140 does not provide a position signal to the control device after a period of time, it indicates that the fastening part cannot lock tightly with the inner pot and the inner lid, that is, the lid 110 and the pot body are not locked properly, and pressure cooking cannot be performed normally. The control device then controls the drive motor 134 to rotate back to reset the fastening part to the disengaged position and not apply pressure, so that the cooking appliance can perform cooking work as a normal atmospheric pressure cooking appliance.

[0260] During the rotation of the drive motor 134 along the first rotation direction R1, the control device monitors the operating current of the drive motor 134 in real time and simultaneously detects whether the drive motor 134 outputs an abnormality flag signal. The control device has an abnormality flag bit (BIT). When the drive motor 134 generates or outputs an abnormality flag signal, BIT = 1. If the drive motor 134 does not generate or output an abnormality flag signal, BIT = 0. If BIT = 1, the control device has no output signal, indicating that the drive motor 134 is malfunctioning (e.g., stalled or overheated). The control device then prevents pressurization, meaning the electric pressure relief device 120 switches to or remains in the open state of the steam passage 110a to reduce the heat during the boiling stage and proceed with the normal rice cooker program. If BIT = 0, the control device maintains normal pressurization, meaning the electric pressure relief device 120 switches to the open state of the sealed steam passage 110a, allowing the pressurized cooking process to continue.

[0261] If BIT = 1, during the pressure-up stage, the BIT bit is automatically cleared first, i.e., the program forces BIT = 0. The control device controls the drive motor 134 to rotate along the second rotation direction R2 by a certain angle, for example, 50°, and then controls the drive motor 134 to rotate along the first rotation direction R1 by an angle, for example, 100 degrees. During the rotation of the drive motor 134, the control device monitors the operating current of the drive motor 134 in real time and simultaneously detects whether the drive motor 134 outputs an abnormality indicator signal. If an abnormality indicator signal is output, BIT = 1. If no abnormality indicator signal is output, BIT = 0. If BIT = 1, the control device has no output signal, indicating that the drive motor 134 has an abnormality such as stall or over-temperature protection. At this time, the control device prevents pressure from being applied, i.e., the electric pressure relief device 120 switches to or remains in the open state of the open steam passage 110a, reduces the heat, and runs the normal rice cooker program.

[0262] If BIT=0, the drive motor 134 is normal, the cooking appliance pressurizes normally and then releases pressure. Then, the drive motor 134 rotates 100° in the second rotation direction R2, and the fastener 131 moves to the disengagement position to achieve automatic unlocking. The disengagement is determined based on the rotation angle of the drive motor 134, for example, 100°, and the normal pressure cooking process is carried out.

[0263] In the embodiments of this application, the cooking process controls the drive motor 134 to operate twice, at the initial stage and the pressure-pressuring stage, and checks the drive motor 134 for abnormal indicator signals twice to improve the accuracy of fault detection. The control device can automatically determine whether the lid is locked. If it is not locked, it is used as a regular rice cooker or atmospheric pressure cooker, and cooking continues using the regular rice cooker cooking program. If it is locked, it indicates that everything is normal, and cooking continues according to the selected pressure cooking function. In this way, whether the lid is abnormal or not does not affect the user's use, improving the user experience.

[0264] If the power is suddenly cut off after the fastener 131 is locked, the fastener 131 will not automatically disengage, and the rice cooker will not open. In this case, the force transmission component 135 on the cooking appliance can be used to unlock it. The force transmission component 135 is connected to the fastener linkage mechanism. Through the lever principle, moving the force transmission component 135 will cause the fastener linkage mechanism to move, causing the fastener 131 to loosen from the inner pot and inner lid, thus achieving the purpose of disengagement.

[0265] The following describes in detail the control method of one embodiment of this application, taking the rice cooking function as an example.

[0266] 1. Cooking Preparation Stage

[0267] Selecting the rice cooking function and pressing the start button sends a signal to the drive motor 134 to rotate in the first rotation direction R1, controlling the drive motor 134 to rotate a certain angle and then stop, for example, rotating 90° to 110°. Preferably, the drive motor 134 rotates 100°. This can be understood as determining whether the fastening member 131 has moved to the fastening position based on whether the drive motor 134 can rotate a certain angle.

[0268] When W1=1, if BIT=1, the control device has no output signal, indicating that the drive motor 134 is malfunctioning (e.g., stalled or overheated). The control device will not pressurize, meaning the electric pressure relief device 120 will switch to or remain in the open state of the steam passage 110a to reduce the heat during the boiling stage and run the normal rice cooker program. In other words, if W1=1 or BIT=1, it indicates that the fastener 131 is stuck or the drive motor 134 is damaged. If BIT=0, the control device will pressurize normally, meaning the electric pressure relief device 120 will switch to the open state that blocks the steam passage 110a, allowing the pressurized cooking process to continue.

[0269] The control device acquires the initial pot bottom temperature T10 via a bottom temperature detection device and the initial pot top temperature T20 via a top temperature detection device. The rotating frame 132 rotates within a real-time angle range, for example, 0° to 100°. When the drive motor 134 rotates along the first rotation direction R1 to the first target angle, the fastening member 131 is in the fastened position. The first target angle is, for example, 100°. When the drive motor 134 rotates along the second rotation direction R2 to the second target angle, the fastening member 131 is in the disengaged position. The second target angle is, for example, 0°.

[0270] 2. Cooking stage

[0271] (1) Preheating and water absorption stage

[0272] The heating device operates at a first power for heating. When the temperature detected by the bottom temperature sensor reaches the preset water absorption temperature T11, the heating device stops heating. T11 ≤ 60℃, for example, T11 equals 55℃. When the temperature detected by the bottom temperature sensor is less than (T11-3), the heating device is controlled to heat at a second power. Here, (T11-3) is 3℃ lower than T11. A similar description can be understood here. When the temperature detected by the bottom temperature sensor reaches the preset water absorption temperature T11, the heating device stops heating. This cycle repeats, dynamically maintaining the temperature at the bottom of the cooking cavity within a range greater than or equal to (T11-3) and less than T11. The preset water absorption time for the preheating water absorption stage is t1. t1 ≤ 20min, for example, t1 equals 8min. When the duration of the water absorption stage reaches t1, the rapid boiling and pressurization stage begins. The first power is the rated power of the heating device or a power greater than 80% of the rated power. The second power is a power greater than or equal to 30% of the rated power of the heating device, and less than or equal to 80% of the rated power of the heating device.

[0273] (2) Rapid boiling and pressurization stage

[0274] During the rapid boiling and pressurization phase, the heating device operates at its highest power for heating. When the temperature detected by the top temperature sensor reaches the preset boiling point temperature T21, boiling is determined. T21 ≥ 85℃. For example, if the temperature detected by the top temperature sensor does not rise further for 30 seconds, boiling or a state of boiling is determined. At this time, the boiling flag b changes from 0 to 1, and the actual boiling temperature T22 is recorded. T22 ≥ T21, meaning the actual boiling temperature may be the same as or higher than the preset boiling point temperature.

[0275] If the rotation angle of the drive motor 134 is between 95° and 105°, it indicates that the cover is in place.

[0276] When W1=1, if BIT=1, during the pressure-up phase, the BIT bit is automatically cleared, i.e., the program forces BIT=0. The control device controls the drive motor 134 to rotate along the second rotation direction R2 by a certain angle, for example, 50°, and then controls the drive motor 134 to rotate along the first rotation direction R1 by an angle, for example, 100 degrees. During the rotation of the drive motor 134, the control device monitors the operating current of the drive motor 134 in real time and simultaneously detects whether the drive motor 134 outputs an abnormality indicator signal. If an abnormality indicator signal is output, BIT=1. If no abnormality indicator signal is output, BIT=0. If BIT=1, the control device has no output signal, indicating that the drive motor 134 has an abnormality such as stall or over-temperature protection. At this time, the control device prevents pressure from being applied, i.e., the electric pressure relief device 120 switches to or remains in the open state of the open steam passage 110a, reduces the heat, and runs the normal rice cooker program.

[0277] When W1=1, if BIT=0 and the drive motor 134 remains normal, the cooking appliance can normally perform the pressurization and depressurization process. Then, the drive motor 134 rotates 100° along the second rotation direction R2, and the fastener 131 moves to the disengaged position to achieve automatic unlocking. The disengagement is determined based on the rotation angle of the drive motor 134, for example, 100°, and the normal pressure cooking process continues. The electric depressurization device is then switched to the closed state, blocking the steam passage, and the cooking chamber begins to pressurize, with the pressurization time being timed. Within the preset pressurization time t2, the maximum temperature T23 detected by the top temperature detection device is recorded in real time. T23 ≤ (T22 + 10) (reaching 50 kPa under standard atmospheric pressure). When the pressurization time reaches the preset pressurization time t2, or the maximum temperature detected by the top temperature detection device exceeds (T22 + 10), the next stage (pressure holding and boiling maintenance stage) begins. The preset pressing time t2 is ≤ 10 min, preferably 8 min. During the pressing stage, the float component floats up under the pressure inside the cooking cavity and inserts into the limiting hole. At this time, the rotating frame is blocked by the float component, thus preventing the rotating frame from rotating relative to other parts of the lid.

[0278] If the rotation angle of the drive motor 134 is less than 95°, the drive motor 134 is controlled to rotate first along the first rotation direction R1 to rotate the rotating frame 132 by 50°, and then the drive motor 134 is controlled to rotate 100° along the second rotation direction R2. If the engagement position detection device 141 does not provide a engagement position signal, the pressure is not applied or the relevant pressure-applying cooking process is not executed, and the electric pressure relief device is not activated. The heating device is controlled to heat at the second power, reducing the heat and running the normal rice cooker program. The second power is greater than or equal to 30% of the rated power of the heating device and less than or equal to 80% of the rated power of the heating device. At this time, the float component is not aligned with the limiting hole.

[0279] (3) Pressure holding and boiling stage

[0280] Standard cooking procedures:

[0281] Record the duration of boiling. When the boiling duration reaches the preset boiling duration t3, proceed to the next stage (simmering stage). t3 ≤ 15 min. Preferably, t3 is 10 min. During the preset boiling duration t3, the control device controls the heating device to operate at a second power for heating.

[0282] Pressure cooking process:

[0283] When the pressure-up time reaches the preset pressure-up time t2, or when the maximum temperature detected by the top temperature detection device is greater than (T22+10), the recording of the boiling maintenance time begins. When the boiling maintenance time reaches the preset boiling maintenance time t3, the next stage (cooking stage) begins. t3 ≤ 10 min. Preferably, t3 is 5 min. During the preset boiling maintenance time t3, the control device controls the heating device to operate at a second power for heating.

[0284] (4) Cooking Rice Stage

[0285] Standard rice cooker program:

[0286] The heating device is controlled to operate at a third power for heating, while simultaneously counting down from a preset cooking time t4. t4 ≤ 20 min, preferably t4 is 10 min. In examples with a display component, the control device controls the display component to show the countdown from the preset cooking time t4. When the countdown reaches 0, the cooking stage ends, and the heat preservation stage begins.

[0287] Pressure cooker program:

[0288] The heating device is controlled to operate at a third power for heating, while simultaneously counting down from a preset cooking time t4. t4 ≤ 20 min, preferably t4 is 10 min. In an example with a display component, the control device controls the display component to show the countdown from the preset cooking time t4. When the countdown reaches 5 min, the control device begins to control venting. Venting is divided into two stages: in the first stage, venting occurs once at each preset interval, for a total of at least two venting operations; in the second stage, venting is continuously performed. Before continuously venting through the open steam channel 110a, the real-time cooking temperature T24 detected by the top temperature detection device is obtained, and it is determined whether T24 is less than or equal to (T22 + a). 2° ≤ a ≤ 10°. 1° corresponds to 5 kPa. If T24 ≤ (T22 + a), the electric pressure relief device 120 is switched to the open state. If T24 ≤ (T22 + a), the electric pressure relief device 120 is switched to the open state, i.e., entering the second stage of venting. If T24 is greater than (T22+a), the electric pressure relief device 120 is switched between open and closed states to perform intermittent venting in the first stage. During the first stage of venting, the control unit automatically adjusts the venting frequency or operating frequency of the electric pressure relief device 120 according to the real-time cooking temperature T24 before venting. If the real-time cooking temperature T24 corresponds to a temperature of 40 kPa to 50 kPa, the control unit controls the electric pressure relief device 120 to switch to the open state every 8 seconds and maintain the venting for 1 second. If the real-time cooking temperature T24 corresponds to a temperature of 30 kPa to 40 kPa, the control unit controls the electric pressure relief device 120 to switch to the open state every 10 seconds and maintain the venting for 1 second. If the real-time cooking temperature T24 corresponds to a temperature of 20 kPa to 30 kPa, the control unit controls the electric pressure relief device 120 to switch to the open state every 12 seconds and maintain the venting for 1 second. If the real-time cooking temperature T24 corresponds to a temperature less than or equal to 20 kPa, it is considered a safe pressure, and the system enters the second stage of venting. The control unit controls the electric pressure relief device 120 to switch to and remain in the open position. In some examples, when the countdown reaches 5 minutes, venting occurs once each at 8 seconds (4 minutes 52 seconds), 16 seconds (4 minutes 44 seconds), and 24 seconds (4 minutes 36 seconds), for a total of 3 venting cycles. Immediately afterwards, the electric pressure relief device switches to the closed position and remains in the closed position for 1 second (until 4 minutes 35 seconds) or 0.5 seconds or other durations. After another 30 seconds (e.g., 4 minutes 5 seconds), the electric pressure relief device switches to the open position to keep the steam passage open for continuous venting. After continuous venting begins, the buzzer sounds 30 times, each beep lasting approximately 0.5 seconds, with an interval of approximately 0.5 seconds between each beep.When the countdown reaches 1 minute and the pressure inside the cooking chamber has reached atmospheric pressure, if the real-time rice-cooking temperature T24 detected by the top temperature detection device is less than T22, the drive motor 134 is controlled to rotate in the second rotation direction R2 to disengage. When the pressure inside the cooking chamber has reached atmospheric pressure, the float component 136 falls back to the initial position of the disengagement limit hole 132b to allow the rotating frame 132 to rotate. When the flag W2 of the disengagement position detection device 142 is equal to "1", the fastener 131 is determined to have reached the disengagement position based on whether the disengagement position detection device 142 provides a disengagement position signal. If so, it indicates that the fastener 131 has reached the disengagement position, and the drive motor is controlled to stop rotating. The third power is less than 30% of the rated power of the heating device. When the countdown reaches 0, the rice-cooking stage ends and the heat preservation stage begins.

[0289] (5) Insulation stage

[0290] The heating device is controlled to operate at a third power level for heating. The temperature inside the cooking cavity is maintained, for example, at 70°C. The heat preservation time is, for example, 0 hours to 24 hours, until the user turns off the heat preservation function, selects the stop function, or turns off the power. The third power level is less than 30% of the rated power of the heating device.

[0291] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “setup” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0292] This application has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this application, and all such variations and modifications fall within the scope of protection claimed in this application.

Claims

1. A method for controlling a cooking appliance, wherein the cooking appliance is equipped with a control unit, characterized in that, The cooking appliance includes a pot body (100), which is provided with a pot inner (101) for holding food ingredients; The cooking appliance includes a lid (110), which is detachably connected to the pot body (100) and forms a cooking cavity between the lid (110) and the inner pot (101); The cover (110) is provided with a drive motor (134), a rotating frame (132) and a fastening member (131). The rotating frame (132) is connected to the drive motor (134) and can be driven by the drive motor (134) to rotate. The fastening member (131) is connected to the rotating frame (132) and can be driven by the rotating frame (132) to move between a fastened position and a disengaged position. The cover (110) is provided with a fastening position detection device (141) corresponding to the fastening position, and the fastening position detection device (141) is electrically connected to the control unit; The control method includes the following steps: S1: Determine whether the engagement position signal of the engagement position detection device (141) has been received; S2: If the engagement position signal is not received, the air pressure value of the cooking cavity is detected; S3: Determine whether the air pressure value is greater than the first preset air pressure threshold; S31: If the air pressure value is greater than the first preset air pressure threshold, then control the execution of the pressure relief process; S32: If the air pressure value is less than or equal to the first preset air pressure threshold, then continue to determine whether the preset target air pressure value corresponding to the current cooking function is greater than the second preset air pressure threshold. S321: If the preset target pressure value corresponding to the current cooking function is greater than the second preset pressure threshold, output a prompt message to remind you to use the manual locking method to lock the lid; S322: If the preset target air pressure value corresponding to the current cooking function is less than or equal to the second preset air pressure threshold, then control the execution of the normal pressure cooking function.

2. The control method according to claim 1, characterized in that, The control method includes: After executing step S321, determine whether the engagement position signal has been received within a preset time, and then select the next step to execute: S3211: If the engagement position signal is received, control to continue executing the cooking process corresponding to the current cooking function; S3212: If the engagement position signal is not received, control to stop cooking.

3. The control method according to claim 2, characterized in that, The cover (110) is provided with a steam passage (110a); The cover (110) is equipped with an electric pressure relief device (120) that can block or open the steam passage (110a) according to a control command; The control method step S3211 further includes: if the engagement position signal is received, controlling the electric pressure relief device (120) to switch to the closed state of blocking the steam passage (110a), and continuing to execute the cooking process corresponding to the current pressurized cooking function.

4. The control method according to claim 1, characterized in that, In step S2, the method for detecting the gas pressure value of the cooking cavity is as follows: The temperature value of the cooking cavity is detected and converted into a gas pressure value according to a preset formula, or... The cooking appliance is equipped with a pressure detection device, which detects the pressure value of the cooking cavity and communicates with the control unit.

5. The control method according to claim 1, characterized in that, The cooking appliance is equipped with a cooking cavity pressure detection device electrically connected to the control unit. The cooking cavity pressure detection device detects the pressure value of the cooking cavity and feeds it back to the control unit.

6. The control method according to claim 1, characterized in that, The cover (110) is provided with a steam passage (110a); The cover (110) is equipped with an electric pressure relief device (120) that can block or open the steam passage (110a) according to a control command; During the process of controlling the execution of the pressure relief procedure, the electric pressure relief device (120) is first controlled to start and stop N times, so that the cooking cavity is connected and disconnected from the atmospheric pressure N times, until the air pressure value in the cooking cavity is equal to the first preset air pressure threshold, where N is a positive integer and N≥2.

7. The control method according to claim 6, characterized in that, After the air pressure in the cooking cavity reaches the first preset air pressure threshold, the electric pressure relief device (120) is switched to the open state.

8. The control method according to claim 4, characterized in that, The temperature value of the cooking cavity is detected and converted into a pressure value according to a preset formula. The first preset pressure threshold and the second preset pressure threshold correspond to the first temperature threshold and the second temperature threshold, respectively. The first temperature threshold and the second temperature threshold are obtained by querying the temperature-pressure correspondence table in the cooking cavity.

9. The control method according to claim 1, characterized in that, The first preset air pressure threshold corresponds to the standard atmospheric pressure value of the location of the cooking appliance; The second preset pressure valve value is a preset pressure value of the cooking appliance used to distinguish whether it has a pressurized cooking function.

10. The control method according to claim 1, characterized in that, The cooking appliance is equipped with a prompting element; The cover (110) is provided with a manual part or manual element that is connected to the rotating frame (132) and can drive the rotating frame (132) to rotate; In step S321, the prompting information is output by the prompting element to prompt the user to manually lock the lid.

11. The control method according to claim 1, characterized in that, The cooking appliance includes a drive transmission assembly, and the rotating rack (132) is connected to the drive motor (134) via the drive transmission assembly.

12. The control method according to claim 11, characterized in that, The drive transmission assembly includes a transmission connector (133), the active end of which is connected to the output shaft of the drive motor (134), and the driven end of which is connected to the rotating frame (132) to drive the rotating frame (132) to rotate.

13. The control method according to any one of claims 1 to 12, characterized in that, The cover (110) includes a cover body (117) and a rotating frame (132) connected to the cover body (117), and the cover body (117) is provided with a float component (136); The rotating frame (132) is provided with a limiting hole (132b) for engaging with the float component (136); When the fastening member (131) is in the fastening position, the position of the float member (136) is aligned with the position of the limiting hole (132b), or the float member (136) is located in the limiting hole (132b).

14. The control method according to claim 13, characterized in that, Functional beams (132i) are provided between the frame (132h) of the rotating frame (132), and the limiting hole (132b) is provided at the intersection of the functional beam (132i) or two functional beams (132i); When the fastening member (131) is not in the fastening position, the position of the float member (136) is offset from the position of the limiting hole (132b).

15. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed, implements the control method according to any one of claims 1 to 14.

16. A cooking utensil, characterized in that, The cooking appliance includes: The pot body (100) includes a pot inner (101) for containing food ingredients; A lid (110) is detachably disposed on the pot body (100) to form a cooking cavity between the lid (110) and the inner pot (101), and the lid (110) is provided with a steam passage (110a) for communicating with the cooking cavity. A locking and opening assembly (130) is movably disposed on the lid (110). The locking and opening assembly (130) has a locked state that engages the inner pot (101) and the lid (110) and a disengaged state that disengages from the inner pot (101) and the lid (110). A position detection device (140) is provided on the cover (110). The position detection device (140) is arranged correspondingly to the cover locking and opening assembly (130) to detect the position signal of the cover locking and opening assembly (130). An electric pressure relief device (120) is provided on the cover (110), and the electric pressure relief device (120) has an open state for opening the steam passage (110a) and a closed state for blocking the steam passage (110a); A pressure detection device is used to detect the pressure value inside the cooking cavity; A control device electrically connected to a lid-opening assembly (130), a position detection device (140), a pressure detection device, and an electric pressure relief device (120) is configured to determine the state of the lid-opening assembly (130) based on a position signal detected by the position detection device (140), and to control the electric pressure relief device (120) to switch between an open state and a closed state based on the pressure value detected by the pressure detection device in the cooking cavity.

17. The cooking utensil according to claim 16, characterized in that, The cover opening and closing assembly (130) includes a rotating frame (132) and a fastening member (131). The rotating frame (132) is rotatably mounted on the cover body (110) and linked with the fastening member (131) to move the fastening member (131) between a fastened position and a disengaged position. The cooking appliance is provided with a manual rotating frame drive mechanism that is connected to the rotating frame (132) and can drive the rotating frame (132).

18. The cooking utensil according to claim 17, characterized in that, The cooking appliance includes a drive transmission assembly and a drive motor (134), and the rotating frame (132) is connected to the drive motor (134) via the drive transmission assembly; The manual rotating frame drive mechanism includes a force transmission element (135), one end of which is connected to the drive transmission assembly, and the other end is operated to drive the drive transmission assembly to move, thereby driving the rotating frame (132) to rotate.

19. The cooking utensil according to claim 17, characterized in that, The cooking appliance includes a drive motor (134) connected to the rotating frame (132) for driving the rotating frame (132) to rotate. The manual rotating frame drive mechanism is located near the drive motor (134), or the drive motor (134) and the manual rotating frame drive mechanism are connected and both are located at the rear of the cover (110).

20. The cooking utensil according to any one of claims 17 to 19, characterized in that, The cover (110) is provided with an opening, through which it is adjacent to the manual rotating frame drive mechanism.

21. The cooking utensil according to claim 16, characterized in that, The electric pressure relief device (120) includes: A pressure ball (121) is movably connected to the cover (110) between an open position (opening the steam passage (110a)) and a closed position (closing the steam passage (110a)); and A pressure relief drive (122) is driven to the pressure ball (121) and is used to actuate the pressure ball (121) to change the position of the pressure ball (121).

22. The cooking utensil according to claim 16, characterized in that, The cooking appliance also includes: A drive motor (134) is connected to the cover opening assembly (130) and is connected to the control device to drive the cover opening assembly (130) to change its state under the control of the control device.

23. The cooking utensil according to claim 22, characterized in that, The cover opening assembly (130) includes: A fastening element (131) is movably connected to the cover (110) in a fastened position and a disengaged position along the radial direction of the cover (110). In the fastened position, the fastening element (131) locks the cover (110) and the inner pot (101), while in the disengaged position, the fastening element (131) allows the cover (110) to disengage from the inner pot (101); and / or A rotating frame (132) is rotatably connected to the cover (110) about a first axis (AX1). The rotating frame (132) includes a guide hole (132a) whose extending direction intersects the radial direction of the cover (110). A fastening member (131) is movably connected to the guide hole (132a) along the extending direction of the guide hole (132a). The rotating frame (132) is drively connected to the drive motor (134).

24. The cooking utensil according to claim 23, characterized in that, The cooking appliance also includes a transmission connector (133), one end of which is connected to the output shaft of the drive motor (134), and the other end is connected to the rotating frame (132).

25. The cooking utensil according to any one of claims 17 to 19, characterized in that, The cover (110) includes a cover body (117), and the cover body (117) is provided with a float component (136); The rotating frame (132) is provided with a limiting hole (132b) for engaging with the float component (136); When the cover opening assembly (130) is in the locked state, the position of the float component (136) is aligned with the position of the limiting hole (132b), or the float component (136) is located in the limiting hole (132b).

26. The cooking utensil according to claim 25, characterized in that, Functional beams (132i) are provided between the frame (132h) of the rotating frame (132), and the limiting hole (132b) is provided at the intersection of the functional beam (132i) or two functional beams (132i); When the cover opening assembly (130) is in the non-engaged state, the position of the float component (136) is offset from the position of the limiting hole (132b).

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