Cooking utensil

Abstract

The utility model provides a cooking utensil. The cooking utensil comprises a pot body, a cover body, a cover locking and opening assembly, a driving motor, a mains supply detection circuit, an electric power storage part and a control unit. The driving motor is connected with the cover locking and opening assembly so as to drive the cover locking and opening assembly to be switched to the unlocking state. The mains detection circuit is configured to detect a power-off signal. The power storage device is connected to the driving motor and the control unit. The control unit is configured to control the power storage part to supply power to the driving motor and control the driving motor to rotate according to the power-off signal. The control unit can control the power storage part to supply power to the driving motor and control the driving motor to rotate according to the power-off signal, so that the cover locking and opening assembly can be switched to the unlocking state, and the cover body and the cooker liner can be unlocked in the power-off state.

Description

Technical Field

[0001] This application relates generally to the technical field of cookware, and more specifically to a cooking utensil. Background Technology

[0002] In related technologies, cooking appliances use electronic controls to operate a motor, enabling the inner lid and the pot body to automatically lock and unlock. However, in the event of a power outage, the motor may freeze at the moment of power failure. If the lid is locked at that moment, the user will be unable to open it by pressing the lid-opening button. Utility Model Content

[0003] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] To at least partially solve the above problems, this application provides a cooking appliance, the cooking appliance comprising:

[0005] pot body;

[0006] A lid, which is foldably disposed on the pot body;

[0007] A lid locking and opening assembly is movably disposed on the lid body, and the lid locking and opening assembly has a locked state that locks the pot body and the lid body and an unlocked state that unlocks the pot body and the lid body;

[0008] A drive motor, which is connected to the cover locking and opening assembly;

[0009] A mains power detection circuit, configured to detect a power outage signal;

[0010] Energy storage device, the energy storage device being connected to the drive motor; and

[0011] A control unit is electrically connected to the drive motor, the mains power detection circuit, and the energy storage device. The control unit is configured to control the energy storage device to supply power to the drive motor and control the drive motor to rotate according to the power failure signal.

[0012] According to the cooking appliance of this application, the control unit can control the energy storage device to supply power to the drive motor and control the drive motor to rotate according to the power failure signal, so as to switch the lid locking and opening assembly to the unlocked state, thereby enabling the lid and the pot body to be unlocked in the power failure state.

[0013] Optionally, the cover includes a first receiving cavity;

[0014] The cooking appliance includes a control circuit board with the control unit, the control circuit board being housed in the first receiving cavity.

[0015] According to this application, by arranging the control circuit board in the first receiving cavity of the cover, the space utilization of the cover can be improved, while the control circuit board is protected.

[0016] Optionally, the cover further includes a second receiving cavity, in which the energy storage device is housed.

[0017] According to this application, by arranging the energy storage device in the second receiving cavity, the energy storage device and the control circuit board can be arranged independently, reducing the electromagnetic interference and other effects of the energy storage device on the control circuit board, and also reducing or avoiding interference between the energy storage device and the control circuit board.

[0018] Optionally, the cooking appliance includes a control circuit board; the control unit and the energy storage device are disposed on the control circuit board.

[0019] According to this application, by integrating the control unit and the energy storage device on the control circuit board, modular design is facilitated, and installation efficiency is also improved.

[0020] Optionally, the energy storage device includes a capacitor or a battery.

[0021] According to this application, the use of capacitors or batteries as energy storage devices facilitates implementation.

[0022] The cover opening and closing assembly includes:

[0023] A fastening element, movably disposed on the cover body between a locked position and an unlocked position along the radial direction of the cover body, wherein the fastening element in the locked position is locked to the cover body and the pot body; and

[0024] A rotating frame is rotatably mounted on the cover about a first axis and connected to the drive motor. The rotating frame is also connected to the fastening member to drive the fastening member to move.

[0025] According to this application, the drive motor can drive the rotating frame to rotate, thereby causing the fastening member to move between the locked position and the unlocked position, and thus causing the cover opening assembly to switch between the locked state and the unlocked state.

[0026] Optionally, the cooking appliance includes:

[0027] A position detection device is disposed on the cover and connected to the battery storage device and the control unit. The position detection device is arranged correspondingly to the rotating frame or the fastening member to detect the position signal of the fastening member.

[0028] The control unit is configured to switch the operating state of the drive motor based on the position signal detected by the position detection device.

[0029] According to this application, by setting a position detection device, the control unit can control the operating state of the drive motor according to the position signal detected by the position detection device.

[0030] Optionally, the rotating frame includes a trigger unit.

[0031] The position detection device includes:

[0032] A locking position detection device is arranged corresponding to the trigger part, and the locking position detection device is configured to detect the position signal of the trigger part when the fastener is in the locking position.

[0033] According to this application, by setting a locking position detection device, the position signal of the trigger part of the rotating frame can be detected when the fastener is in the locking position, thereby helping to determine that the fastener has moved to the locking position.

[0034] Optionally, the rotating frame includes a trigger unit.

[0035] The position detection device includes:

[0036] An unlocking position detection device is provided, which is arranged corresponding to the triggering part. The unlocking position detection device is configured to detect the position signal of the triggering part when the fastening member is in the unlocking position.

[0037] According to this application, by setting an unlocking position detection device, the position signal of the trigger part of the rotating frame can be detected when the unlocking component is in the unlocking position, thereby helping to determine that the unlocking component has moved to the unlocking position.

[0038] Optionally, the cover includes a cover body, the cover body being provided with a float component; the rotating frame is connected to the cover body, the rotating frame being provided with a limiting hole for engaging with the float component; when the fastener is in the locked 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.

[0039] According to this application, when the fastener is in the locked position, if the cooking space is not pressed up, the position of the float component is aligned with the position of the limiting hole, but the float component is not located in the limiting hole, so that it can move into the limiting hole when pressed up. If the cooking space is pressed up, the float component is located in the limiting hole, thereby preventing the rotating frame from rotating. Attached Figure Description

[0040] 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,

[0041] Figure 1 A cross-sectional view of a cooking appliance according to a preferred embodiment of this application;

[0042] Figure 2 An exploded view of a cooking appliance according to a preferred embodiment of this application;

[0043] Figure 3 A perspective view of a cooking appliance without a lid according to a preferred embodiment of this application;

[0044] Figure 4 for Figure 3 A cross-sectional view of the lid of a cooking utensil excluding the top cover;

[0045] Figure 5 for Figure 3 A schematic diagram of the rotating frame in the diagram;

[0046] Figure 6 for Figure 3 The image shows a top view of a cooking appliance without a lid, with the fasteners in the locked position.

[0047] Figure 7 for Figure 3 Another top view of the cooking appliance shown without the lid, with the fastener in the unlocked position;

[0048] Figure 8 for Figure 3 A top view of the assembly of the transmission connector and the drive motor in the middle;

[0049] Figure 9 This is a schematic diagram of the circuit structure of a cooking appliance according to a preferred embodiment of the present application;

[0050] Figure 10 for Figure 9 A schematic diagram of the mains power detection circuit in the diagram; and

[0051] Figure 11This is a schematic diagram of the circuit structure of a cooking appliance according to another preferred embodiment of this application.

[0052] Explanation of reference numerals in the attached figures:

[0053] 100: Pot body 101: Inner pot

[0054] 102: Lid opening torsion spring; 103: Base

[0055] 104: Insulation cover; 110: Cover body

[0056] 110a: Steam passage; 110c: Guide surface

[0057] 111: Face cover 111a: Face cover body

[0058] 111a1: First receiving cavity; 111a2: Second receiving cavity

[0059] 111b: Panel; 112: Liner

[0060] 113: Inner cover; 114: Steam valve

[0061] 116: Control circuit board; 117: Cover body

[0062] 120: Electric pressure relief device; 121: Pressure ball

[0063] 122: Pressure relief drive component; 123: Push rod

[0064] 130: Cover locking and opening assembly; 131: Fastening component

[0065] 132: Rotating bracket; 132a: Guide hole

[0066] 132b: Limiting hole; 132c: Triggering part

[0067] 133: Transmission connecting component; 133a: Rotation center.

[0068] 133b: Free end; 134: Drive motor

[0069] 134a: Motor shaft; 136: Float component

[0070] 137: Guide connector; 140: Position detection device

[0071] 141: Locked position detection device; 142: Unlocked position detection device

[0072] 160: Lid-closing hook; AX: Rotation axis

[0073] AX1: First axis line; AX2: Second axis line

[0074] P1: First extreme position P2: Second extreme position

[0075] RO1: First rotation direction; RO2: Second rotation direction

[0076] X: Forward / backward direction; Y: Left / right direction.

[0077] Z: Height direction Detailed Implementation

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] like Figures 1 to 8 As shown, this application provides a cooking appliance. The cooking appliance of this application can be an electric pressure cooker, electric pressure cooker, electric slow cooker, electric hot pot, soy milk maker, blender, or other electric cooking appliances. The cooking appliance may include a cooker body 100, a lid 110, an electric pressure relief device 120, a position detection device 140, a pressure detection device, a control unit 152, and a power storage device 158.

[0085] 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.

[0086] The pot body 100 includes a pot inner 101, a heating device (not shown), a control unit 152, and a pressure detection device (not shown). The pot inner 101, used to hold food, is removably installed in the pot body 100. When the lid 110 closes the pot body 100, a cooking space is formed between the lid 110 and the pot inner 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 pot body 100 and below the pot inner 101 to heat the food in the pot inner 101. The control unit 152 can be a microcontroller unit (MCU) for controlling the cooking process. The control unit 152 can be located on a control circuit board 116, which will be described below. The pressure 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 pressure detection device can be a temperature detection device or a pressure detection instrument. The temperature detected by the temperature sensing device needs to be calculated, converted, or converted into a pressure value through a lookup table. A pressure sensing instrument can directly detect the 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 device and the temperature sensing device are electrically connected to the control unit 152. The temperature sensing device feeds back the sensed temperature information to the control unit 152, allowing the control unit 152 to achieve more precise control over, for example, the heating device, based on the temperature information. The control unit 152 can determine the instantaneous pressure based on the received temperature information through a lookup table or other means, thereby converting the instantaneous temperature into pressure. In other examples, the sensing device can also be a pressure sensing device. The pressure sensing device is used to directly detect the pressure within the cooking space.

[0087] See Figures 2 to 4 In this application, one end of the lid 110 in the front-rear direction X 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 X is detachably connected to the pot body 100 via a lid latch 160, such as... Figure 3 and Figure 4 As shown.

[0088] See Figure 2 The 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 pot 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 cooking appliance, such as sensors. The inner cover 113 is located at the innermost (i.e., lowermost) side of the lid body 110 and is located below the liner 112. The inner lid 113 is detachably connected to the liner 112 via a snap-fit ​​or other detachable connector for easy cleaning and replacement. The inner lid 113 is oriented towards the cooking space. That is, when the lid 110 is closed on the pot body 100, the inner lid 113 is directly above the cooking space. Furthermore, an inner lid sealing ring 1131 is provided on the outer periphery of the inner lid 113. The inner lid sealing ring 1131 is used to seal the gap between the inner lid 113 and the pot body 101 when the inner lid 113 is closed with the pot body 101. In some examples, the inner lid 113 is detachably connected to the liner 112; here, the inner lid 113 may be referred to as a removable lid.

[0089] See Figure 2The 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 152. 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.

[0090] 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.

[0091] Optionally, the control circuit board 116 may include devices such as a display component DISP1 and a buzzer BZ1. The display component DISP1 can be used to display digital information such as time, text information, etc. The buzzer BZ1 is used to remind the user of the status of the cooking appliance by sounding.

[0092] See Figures 2 to 4 For 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. A steam passage 110a that communicates 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 to release the steam generated during cooking.

[0093] 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. The detection device is a temperature detection device. A control unit 152 is electrically connected to the temperature detection device and the electric pressure relief device 120. The control unit 152 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 152 and the electric pressure relief device 120. The power storage device 158 is used to charge when the cooking appliance is connected to mains power and can supply power to the control unit 152 and the electric pressure relief device 120 when the cooking appliance is disconnected from mains power. According to this application, the control unit 152 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 cooking appliance and greatly improving the user experience.

[0094] 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 the pressure ball 121 is in the open position, the steam passage 110a connects 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 steam passage 110a is blocked by the pressure ball 121, thereby disconnecting the cooking space from the external environment to enable cooking functions that require 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. Optionally, the pressure relief drive 122 is a push-pull electromagnet.

[0095] 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 the 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. According to this application, by adding a push rod 123 between the pressure ball 121 and the push-pull electromagnet, the flexibility of the physical arrangement of the electromagnet and the pressure ball 121 is improved.

[0096] Optionally, the energy storage device 158 is a capacitor. This capacitor can be a capacitor originally integrated into the circuit structure or control circuit board 116, or it can be a separately installed capacitor.

[0097] Optionally, the energy storage device 158 is a battery.

[0098] To reduce heat loss during cooking, the pot body 100 also includes a heat insulation cover 104 disposed around the outer periphery of the inner pot 101, such as... Figure 2 As shown. The heat preservation cover 104 is fitted onto the outer periphery of the inner pot 101, and the heat preservation cover 104 is located between the inner pot 101 and the base 103. In this design, the fastening member 131 can engage with the edge of the inner pot 101 or the edge of the heat preservation cover 104. For example, in a rice cooker, the fastening member 131 can engage with the edge of the inner pot 101. For example, in an electric pressure cooker, the edge of the heat preservation cover 104 is at least partially exposed, and the fastening member 131 can engage with the edge of the heat preservation cover 104. For ease of explanation, the following description will focus on the example of the fastening member 131 engaging with the edge of the inner pot 101.

[0099] See Figure 2 For 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 cooking appliance 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 lid locking / unlocking assembly 130 includes a fastening member 131. The fastening member 131 is movably connected to the lid 110 in a locked and unlocked position along the radial direction of the inner lid 113. Here, radial direction can be understood as a direction perpendicular to the first axis AX1. Correspondingly, axial direction is a direction parallel to the first axis AX1. The lid-opening assembly 130 is locked when the fastener 131 is in the locked position. The lid-opening assembly 130 is unlocked when the fastener 131 is in the unlocked position. The fastener 131 may include a clamp for receiving the edges of the inner pot 101 and the inner lid 113. When the fastener 131 is in the locked position, the edges of the inner pot 101 and the inner lid 113 are clamped in the clamp to limit the inner pot 101 and the inner lid 113 in the height direction Z of the cooking appliance, thereby preventing the inner pot 101 and the inner lid 113 from unlocking each other, thus ensuring that the cooking space can be pressurized. When the fastener 131 is in the unlocked position, the clamp unlocks at least one of the edges of the inner pot 101 and the inner lid 113. Preferably, the fastener 131 in the unlocked position unlocks the inner pot 101. The power source may be a drive motor 134. The drive motor 134 is drivenly connected to the fastener 131. The drive motor 134 is connected to the control unit 152 to drive the fastener 131 to move between the locked position and the unlocked position under the control of the control unit 152.

[0100] Continue reading Figures 2 to 7Furthermore, 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 first axis AX1 is the central axis of the rotating frame 132 during rotation. The first axis AX1 is located at or near the geometric center of the rotating frame 132. The rotating frame 132 may include a guide hole 132a. A fastening member 131 is slidably connected to the guide hole 132a along the extension direction of the guide hole 132a. The rotating frame 132 is drively connected to a drive motor 134.

[0101] 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 allowing the fastening member 131 to move to a locked position or an unlocked position in the radial direction of the inner cover 113.

[0102] See Figure 3 , Figures 6 to 8 Furthermore, the cover-opening assembly 130 may also include a transmission connector 133. The transmission connector may be a cam structure, and the transmission connector 133 has opposite rotational centers 133a and free ends 133b. The rotational center 133a is connected to the motor shaft 134a of the drive motor 134 to rotate synchronously with the motor shaft 134a. The free end 133b is movably connected to the rotating frame 132. The motor axis is a second axis AX2, which is parallel to the first axis AX1 of the rotating frame 132. 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. Figure 6 As shown, the motor shaft 134a has opposite first rotation directions RO1 and second rotation directions RO2. The first rotation direction RO1 can be understood as counterclockwise. Correspondingly, the second rotation direction RO2 can be understood as clockwise. During the rotation of the transmission connector 133 along the motor shaft 134a in the first rotation direction RO1, the rotating frame 132 rotates in the second rotation direction RO2, which is opposite to the first rotation direction RO1, causing the fastening member 131 to move towards the locked position. During the rotation of the transmission connector 133 along the motor shaft 134a in the second rotation direction RO2, the rotating frame 132 rotates in the first rotation direction RO1, causing the fastening member 131 to move towards the unlocked position.

[0103] 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.

[0104] See Figure 6 and Figure 7 Optionally, the drive motor 134 can drive the transmission connector 133 to rotate along the second rotation direction Ro2 to the first limit position P1, thereby causing the rotating frame 132 to rotate to the position shown in the image. Figure 7 The third extreme position shown causes the fastener 131 to move to the unlocked position. The drive motor 134 can drive the transmission connector 133 to rotate along the first rotation direction Ro1 to the second extreme position P2, thereby causing the rotating frame 132 to rotate to the position shown. Figure 6 The fourth extreme position shown causes the fastener 131 to move to the locked position.

[0105] See Figure 3 , Figure 6 as well as Figure 7 Optionally, the cooking appliance may also include a manual part or manual element such as a lever 135. The lever 135 is connected to the rotation center 133a. The lever may be a magnetic component such as a magnet, with a manually pushable magnet provided on the outside of the cover 111, which magnetically actuates the lever 135 to rotate; or the lever 135 may be configured to extend out of the outer surface of the cover body 117 so that it can be manually operated by the user. By manually applying a torsional force to the transmission connector 133 at the lever 135, the rotating frame 132 can be driven to rotate, thereby moving the fastener 131 to the unlocked position. In the power-off state, if the power stored in the accumulator 158 is sufficient to power the electric pressure relief device 120 to complete the pressure relief, but not sufficient to drive the motor 134 to work, the user can adjust the fastener 131 to the unlocked position by moving the lever 135, thereby unlocking the inner cover 113 from the pot liner 101. Preferably, the lever 135 can be manufactured as an integral part with the transmission connector 133.

[0106] See Figure 3 , Figures 5 to 7Optionally, the float member 136 is 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 locked 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 pressurized. When the cooking space is under normal pressure, the float component 136 unlocks the limiting hole 132b. At this time, the rotating frame 132 can rotate relative to the cover 112.

[0107] See Figures 3 to 7 Furthermore, the cooking appliance position detection device 140 includes a locked position detection device 141 and an unlocked position detection device 142. The locked position detection device 141 generates a locked position signal when the rotating frame 132 rotates to a position where the fastener 131 moves to the locked position. The unlocked position detection device 142 generates an unlocked position signal when the rotating frame 132 rotates to a position where the fastener 131 moves to the unlocked position. Both the locked position detection device 141 and the unlocked position detection device 142 can be limit switches or position sensors. Both the locked position detection device 141 and the unlocked position detection device 142 are electrically connected to a control unit 152. The control unit 152 is configured to control the drive motor 134 to start or stop rotating based on the locked position signal and the unlocked position signal.

[0108] 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 in the front-rear direction X, near the rotation axis AX. The drive motor 134 is also located in the middle of the cover 110 in the left-right direction Y. The locking position detection device 141 and the unlocking position detection device 142 are located at one end of the cover 110 in the left-right direction Y, specifically on the same side of the cover 110 as the drive motor 134 in the left-right direction Y.

[0109] In other examples not shown, the locking position detection device 141 and the unlocking position detection device 142 are located on both sides of the drive motor 134 in the left-right direction Y of the cover 110.

[0110] See Figure 3 , Figures 5 to 7 Optionally, the rotating frame 132 may include a trigger portion 132c. A locking position detection device 141 is located circumferentially around the first axis AX1 on one side of the trigger portion 132c. The locking position detection device 141 is used to detect the position signal of the trigger portion 132c when the fastening member 131 is in the locked position. That is, by detecting whether the rotating frame 132 has rotated into place, the locking position detection device 141 indirectly determines whether the fastening member 131 has reached the locked position. An unlocking position detection device 142 is located circumferentially around the first axis AX1 on the other side of the trigger portion 132c. The unlocking position detection device 142 is used to detect the position signal of the trigger portion 132c when the fastening member 131 is in the unlocked position. That is, by detecting whether the rotating frame 132 has rotated into place, the unlocking position detection device 142 indirectly determines whether the fastening member 131 has reached the unlocked position. The trigger portion 132c is located at the edge of the rotating frame 132.

[0111] See Figure 5 Optionally, the rotating frame 132 may include a frame 132h and a connecting beam 132i located inside the frame 132h. Both ends of the connecting beam 132i are connected to the frame 132h. A limiting hole 132b is provided on the connecting beam 132i or at the intersection of two connecting beams 132i. When the rotating frame 132 is not rotated to a position where the fastener 131 is in the locked position, the position of the float member 136 is offset from the position of the limiting hole 132b.

[0112] According to this application, when the rotating frame 132 is not rotated into place along the direction of the locking 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.

[0113] See Figures 9 to 11 This application provides a circuit structure for the aforementioned cooking appliance. This circuit structure can be implemented in any form. For example, the circuit structure can be integrated onto a single circuit board, distributed across different circuit boards, or a portion of the circuit structure may be on a circuit board while another portion is not. The circuit structure may include a control unit 152, a mains power detection circuit 151, a battery storage device 158, and a motor drive circuit 153.

[0114] The output of the mains power detection circuit 151 is electrically connected to the control unit 152 to supply power to the control unit 152. The input of the mains power detection circuit 151 is adapted to be directly or indirectly connected to mains power. The mains power detection circuit 151 is configured to detect power-off and power-on signals. When the voltage at the output of the mains power detection circuit 151 is zero, the mains power detection circuit 151 detects a power-off signal. When the voltage at the output of the mains power detection circuit 151 is not zero or jumps from zero to non-zero, the mains power detection circuit 151 detects a power-on signal.

[0115] The energy storage device 158 is used to store and release electrical energy. The energy storage device 158 is adapted to be electrically connected to the drive motor 134 and the control unit 152 to supply power to the drive motor 134 and the control unit 152.

[0116] One end of the motor drive circuit 153 is electrically connected to the control unit 152. The other end of the motor drive circuit 153 is adapted to be electrically connected to the drive motor 134.

[0117] Control unit 152 is configured as follows:

[0118] The voltage at the output terminal of the mains power detection circuit 151 is detected, and it is determined whether the voltage at the output terminal of the mains power detection circuit 151 is zero.

[0119] If the voltage at the output terminal of the mains power detection circuit 151 is not zero, then electrical energy is supplied to the energy storage device 158 to charge the energy storage device 158. Here, the non-zero voltage at the output terminal of the mains power detection circuit 151 can be understood as the circuit structure being connected to the mains power, and the circuit structure being in a powered-on or energized state.

[0120] If the voltage at the output of the mains power detection circuit 151 is zero, then electrical energy is obtained from the energy storage device 158, and the motor drive circuit 153 is turned on to make the drive motor 134 work. Here, the zero voltage at the output of the mains power detection circuit 151 can be understood as the circuit structure being disconnected from the mains power, and the circuit structure is in a power-off state.

[0121] According to the circuit structure of the embodiment of this application, the power is turned off by detecting and judging whether the voltage at the output terminal of the mains power detection circuit 151 is zero. The energy storage device 158 is charged when the mains power detection circuit 151 is powered on, and supplies power to the control unit 152 and the motor drive circuit when the mains power detection circuit 151 is powered off. Thus, the energy of the energy storage device 158 can be used to control the operation of the motor drive circuit 153 when the power is off, and the motor drive circuit 153 can be controlled to operate when the drive motor 134 is connected to the drive motor 134.

[0122] Furthermore, if the voltage at the output of the mains power detection circuit 151 is zero, the control unit 152 sequentially supplies starting current and running current to the motor drive circuit 153. The starting current is greater than the running current. The starting current is used to start the drive motor 134. The running current is used for the operation of the drive motor 134 after it starts. According to this application, when the mains power detection circuit 151 detects a power outage, the motor drive circuit 153 first supplies starting current to the drive motor 134 to meet the larger current demand of the drive motor 134 during startup, and then supplies running current to the drive motor 134 to meet the smaller current demand of the drive motor 134 when maintaining operation. Since the starting current and running current are supplied to the drive motor 134 sequentially, the current required by the drive motor 134 during startup and operation can be reasonably allocated. Compared with always supplying power with the starting current, this can effectively save energy, thereby improving the energy utilization rate of the energy storage device 158 in the event of a power outage.

[0123] In some embodiments, the position detection device 140 is a sensor that directly detects the position of the fastener 131 in real time, such as a laser sensor, a capacitive position sensor, etc. It can not only detect whether the fastener 131 is in the locked or unlocked position, but also determine the real-time position of the fastener 131 during movement. When the mains power detection circuit 151 detects a power outage, the battery 158 supplies current to the drive motor 134. The drive motor 134 drives the rotating frame 135 to select and move the fastener 131 towards the unlocked position. After the fastener 131 has moved a certain distance from the locked position, the position detection device 140 detects that the fastener 131 has moved a specific distance and transmits this signal to the control unit 152. The control unit 152 then switches from supplying start-up current to supplying operating current. Of course, the control unit 152 can also choose to use the time of current supply as the switching indicator, and is not limited to one method.

[0124] Exemplarily, the motor drive circuit 153 may include a first drive circuit 153a and a second drive circuit 153b. One end of the first drive circuit 153a is electrically connected to the control unit 152. The other end of the first drive circuit 153a is adapted to be electrically connected to the drive motor 134. The first drive circuit 153a supplies a starting current. One end of the second drive circuit 153b is electrically connected to the control unit 152. The other end of the second drive circuit 153b is adapted to be electrically connected to the drive motor 134. The second drive circuit 153b supplies an operating current. The control unit 152 is configured to selectively control one of the first drive circuit 153a and the second drive circuit 153b to be turned on sequentially if the voltage at the output terminal of the mains power detection circuit 151 is zero, so as to make the drive motor 134 work. According to this application, when the first drive circuit 153a is turned on to the drive motor 134, the drive motor 134 is powered by the starting current through the first drive circuit 153a to meet the larger current demand of the drive motor 134 during the start-up process. With the second drive circuit 153b connected to the drive motor 134, the second drive circuit 153b supplies power to the drive motor 134 with its operating current to meet the low current requirement of the drive motor 134 while maintaining operation. Furthermore, the first drive circuit 153a and the second drive circuit 153b are connected sequentially but not simultaneously. This allows for a reasonable distribution of the current required by the drive motor 134 during the startup and operation phases. Compared to always supplying power with the startup current, this effectively saves energy and improves the energy utilization rate of the energy storage device 158 during power outages.

[0125] Optionally, the first driving circuit 153a and the second driving circuit 153b each include a first base voltage divider resistor, a second base voltage divider resistor, and a transistor. One end of the first base voltage divider resistor is electrically connected to the control unit 152. The other end of the first base voltage divider resistor is electrically connected to the base of the transistor. One end of the second base voltage divider resistor is electrically connected to the base of the transistor. The other end of the second base voltage divider resistor and the emitter of the transistor are both grounded. The collector of the transistor is electrically connected to the drive motor 134. According to this application, the base of the first transistor is powered by the voltage divider achieved by the first base voltage divider resistor and the second base voltage divider resistor. The control unit 152 can power the drive motor 134 by controlling the transistor to conduct. When the transistor is conducting, a current greater than the base current can be supplied to the drive motor 134. In some embodiments, the first driving circuit 153a and the second driving circuit 153b can be composed of identical circuits, and the control unit 152 controls the output current of the two driving circuits to be different.

[0126] In addition to changing the output current by using different transistors while keeping the resistors the same, the two driving circuits mentioned above can also change the output current by keeping the transistors the same while changing the resistors.

[0127] For example, the control unit 152 is configured to: if the voltage at the output of the mains power detection circuit is zero, control the motor drive circuit 153 to operate sequentially during the start-up period and the maintenance operation period, and input a start-up pulse width modulation signal to the motor drive circuit 153 during the start-up period and a maintenance operation pulse width modulation signal to the motor drive circuit 153 during the maintenance operation period. The start-up period and the maintenance operation period are sequentially continuous, and the duty cycle of the start-up pulse width modulation signal is greater than the duty cycle of the maintenance operation pulse width modulation signal. The motor drive circuit 153 may include only one motor drive circuit. For example, the motor drive circuit 153 is either the first drive circuit 153a or the second drive circuit 153b described above. According to this application, by first inputting a pulse width modulation signal with a larger duty cycle to the motor drive circuit 153, the output of the start-up current of the motor drive circuit 153 is controlled; then, by inputting a pulse width modulation signal with a smaller duty cycle to the motor drive circuit 153, the output of the operating current of the motor drive circuit 153 is controlled.

[0128] Optionally, the mains power detection circuit 151 may include a mains power input terminal, a first voltage divider resistor 151a, a second voltage divider resistor 151b, and a third diode D3. One end of the first voltage divider resistor 151a is electrically connected to the mains power input terminal. The other end of the first voltage divider resistor 151a is electrically connected to one end of the second voltage divider resistor 151b. The other end of the second voltage divider resistor 151b is grounded. The resistance value of the second voltage divider resistor 151b is less than the resistance value of the first voltage divider resistor 151a. One end of the third diode D3 is used to connect to +5V DC power. The +5V DC power can be obtained from the mains power after being regulated, rectified, and filtered by the power supply processing circuit. The control unit 152 is electrically connected between the first voltage divider resistor 151a and the second voltage divider resistor 151b to obtain the ground potential or ground voltage of the second voltage divider resistor 151b between the first voltage divider resistor 151a and the second voltage divider resistor 151b. The third diode D3 is used to clamp the voltage or potential to ground of the second voltage divider resistor 151b to a level not exceeding the rated input voltage of the control unit 152, thereby protecting the control unit 152. The control unit 152 is configured to determine whether the output voltage of the mains power detection circuit 151 is zero based on whether the voltage between the first voltage divider resistor 151a and the second voltage divider resistor 151b is zero. If the voltage between the first voltage divider resistor 151a and the second voltage divider resistor 151b is zero, then the output voltage of the mains power detection circuit 151 is determined to be zero. If the voltage between the first voltage divider resistor 151a and the second voltage divider resistor 151b is not zero, then the output voltage of the mains power detection circuit 151 is determined to be not zero. According to this application, a voltage divider is formed between the mains power and ground by the first voltage divider resistor 151a and the second voltage divider resistor 151b, and the voltage at the output terminal of the mains power detection circuit 151 is determined to be zero by detecting and judging whether the voltage between the first voltage divider resistor 151a and the second voltage divider resistor 151b is zero, thereby determining whether a power outage has occurred.

[0129] Optionally, the ratio of the resistance of the second voltage divider resistor 151b to the sum of the resistances of the first voltage divider resistor 151a and the second voltage divider resistor 151b is greater than or equal to 0.004. Furthermore, the ratio of the resistance of the second voltage divider resistor 151b to the sum of the resistances of the first voltage divider resistor 151a and the second voltage divider resistor 151b is less than or equal to 0.02. The first voltage divider resistor 151a is composed of... Figures 9 to 11 The first resistor R1, the second resistor R2, and the third resistor R3 are connected in series. The resistance of each of the first resistor R1, the second resistor R2, and the third resistor R3 is above 200KΩ. The resistance of the fourth resistor R4 is below 10KΩ. The second voltage divider resistor 151b is... Figures 9 to 11 The fourth resistor in the circuit is R4.

[0130] It is understandable that the first voltage divider resistor 151a can be a single resistor, or it can be two or more resistors connected in series.

[0131] like Figures 9 to 11 As shown, the circuit structure can also include a first capacitor C1 and a second capacitor C2. The first capacitor C1 is connected in parallel with the third resistor R3. The second capacitor C2 is connected in parallel with the fourth resistor. The capacitance of the first capacitor C1 and the second capacitor C2 is less than 200nF. The first diode D1 and the second diode D2 are connected to the mains power for rectification. After voltage division by the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4, and filtering by the first capacitor C1 and the second capacitor C2, the voltage is connected to the analog-to-digital converter port of the chip IC101, which serves as the control unit 152, for measuring the mains voltage. The third diode D3 is connected to a 5V voltage. The 5V is obtained from the mains power through a transformer. When the mains voltage is very high, even if the voltage connected to the chip IC101 after voltage division by the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4 exceeds the rated voltage (approximately 7V) of the chip IC101, the third diode D3 can clamp the voltage connected to the chip IC101 to approximately 4.3V. When the power is off, the voltage after the voltage is divided by the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4 is 0. When the chip IC101 detects a voltage of 0, it can know that the mains power is off.

[0132] like Figure 9 As shown, in the mains power supply circuit 157, the first diode D1 and the second diode D2 form a rectifier bridge 157a connected to the mains power for rectification. The sixth diode D6 is used for unidirectional conduction to prevent current from flowing back into the mains detection circuit 151. The first voltage regulator 157c and the second voltage regulator 157d regulate the voltage sequentially to finally obtain 5V DC. If the mains power is cut off, the 5V DC disappears. When the mains power is present, capacitors C5 and C6 are fully charged by the 5V from the mains power supply circuit 157. Even if the mains power is lost, capacitors C5 and C6 still have charge, with a voltage of 5V_C. 5V_C and the 5V of the mains power supply circuit are separated by the fourth diode D4, so 5V_C is not connected to 5V, while 5V supplies power to other external circuits. After separation, 5V_C will not supply power to useless external circuits, reducing some power consumption. The program also doesn't run normally; it only runs the programs that detect voltage and control the drive motor and electric pressure relief device. Other programs, such as display, cooking, and voice functions, which are irrelevant to controlling the drive motor and electric pressure relief device, are all shut down. Furthermore, the program switches from running at a higher frequency to a lower frequency to reduce power consumption.

[0133] For example, the energy storage device 158 may include energy storage elements. The energy storage device 158 may be a single energy storage element, or it may include two or more energy storage elements. According to this application, the energy storage device 158 specifically achieves energy storage and discharge through energy storage elements.

[0134] Exemplarily, the energy storage device 158 may include at least two energy storage elements. These energy storage elements are connected in parallel. According to this application, since the energy storage device 158 includes energy storage elements connected in parallel, this helps to improve the energy storage capacity of the energy storage device 158, thereby enabling it to supply electrical energy for a longer period of time during power outages. When the energy storage elements are capacitors, at least two capacitors with smaller capacitance can be connected in parallel to obtain a larger capacitance. This reduces the size of a single capacitor compared to using a single, larger capacitor of the same capacitance.

[0135] In some examples, the energy storage element is a capacitor or a battery. According to this application, the energy storage element can be either a capacitor or a battery, thus increasing the flexibility in the selection of the energy storage element.

[0136] In the illustrated example, the energy storage element is a capacitor. Energy storage device 158 includes two capacitors: a fifth capacitor C5 and a sixth capacitor C6, which are connected in parallel. The capacitance of both capacitors C5 and C6 is greater than 500 pF.

[0137] In the case where the energy storage element is a battery, the total capacity of the energy storage element is above 500mAh.

[0138] Exemplarily, the circuit structure may include a fourth diode D4 and an external circuit. A first terminal of the energy storage device 158 is connected to the external circuit via the fourth diode D4. The fourth diode D4 is configured to cut off when current flows from the energy storage device 158 to the external circuit. The external circuit here may include… Figure 9 , Figure 11 The diagram shows a temperature measuring circuit 156, a mains power supply circuit 157, and a display component DISP1. The temperature measuring circuit 156 includes a top temperature measuring circuit 156a and a bottom temperature measuring circuit 156b. According to this application, by placing a diode between the energy storage device 158 and the external circuit, power can be cut off to the external circuit in the power-off state, that is, the electrical connection with the external circuit is severed, so that the external circuit does not work, thereby reducing power consumption and saving the energy of the energy storage device 158. This facilitates the full utilization of electrical energy in necessary devices or circuits such as the control unit 152 and the drive motor 134.

[0139] Exemplarily, the circuit structure may include a pressure relief drive circuit 154. One end of the pressure relief drive circuit 154 is electrically connected to the control unit 152. The other end of the pressure relief drive circuit 154 is adapted to be electrically connected to the electric pressure relief device 120. The control unit 152 is configured to: if the voltage at the output of the mains power detection circuit 151 is zero, obtain electrical energy from the energy storage device 158 and control the pressure relief drive circuit 154 to turn on, so that the electric pressure relief device 120 can operate. According to this application, the pressure relief drive circuit 154 can be controlled to release pressure in the electric pressure relief device 120 in the power-off state, thereby reducing the pressure in the cooking space and thus reducing safety risks.

[0140] Optionally, such as Figure 9 As shown, the pressure relief drive circuit 154 includes a ninth resistor R9, a tenth resistor R10, a third transistor Q3, and a seventh capacitor C7. The ninth resistor R9 is connected between the control unit 152 and the base of the third transistor Q3. One end of the tenth resistor R10 is connected to the base of the third transistor Q3. The other end of the tenth resistor R10 and the emitter of the third transistor Q3 are grounded. The collector of the third transistor Q3 is connected to the second connector CN2, which is used to connect the electric pressure relief device 120. The third transistor Q3 can be a 9013, 8050, or other transistors. The fifth capacitor C5 is connected between the base of the third transistor Q3 and ground.

[0141] The aforementioned drive motor 134 is connected to the lid locking and unlocking assembly to provide power to the lid locking and unlocking assembly, enabling the lid to lock and unlock the pot body. In the power-off state, if the pressure inside the cooking space exceeds the safe pressure, it is necessary to depressurize the cooking space to ensure safety. Typically, the operation of the electric pressure relief device 120 is first controlled according to the pressure state inside the cooking space. Once the pressure inside the cooking space is ensured to be equal to or lower than the safe pressure, the drive motor 134 is then controlled to operate, causing the lid locking and unlocking assembly to switch from the locked state to the unlocked state.

[0142] In addition, such as Figure 9 As shown, the first connector CN1 is used to connect to the drive motor 134. The third connector CN3 is used for the top temperature detection device to obtain the temperature at the top of the cooking space. The fourth connector CN4 is used for the bottom temperature detection device to obtain the temperature at the bottom of the cooking space.

[0143] 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 lid locking and unlocking assembly 130 through a transmission connector 133. By controlling the reverse / forward rotation of the drive motor 134, the fastening member 131 automatically locks / unlocks. 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 cut off, the electric pressure relief device 120 resets to the state where the steam passage 110a is open. When the control unit 152 detects a power failure signal, it stores the cooking stage and the power failure time. The electric pressure relief device 120 is controlled to be energized or intermittently energized. This can greatly reduce the pressure in the cooking space, reduce safety risks, and greatly improve the user experience.

[0144] 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 along the second rotation direction RO2 for a period of time to automatically unlock the latch 131. Based on the power outage duration, it determines whether cooking should continue. If cooking continues, it determines whether pressurization is required based on the current cooking stage. If pressurization is required, it controls the drive motor 134 to rotate along the first rotation direction RO1 for a period of time 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 enable pressurization. Then, starting from the current cooking stage, it continues executing the cooking process for all subsequent cooking stages of the function.

[0145] 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.

[0146] 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 cooking utensil, characterized in that, The cooking appliance includes: Claypot(100); A lid (110) is provided on the pot body (100) in an openable and closable manner; A lid locking and opening assembly (130) is movably disposed on the lid body (110). The lid locking and opening assembly (130) has a locked state that locks the pot body (100) and the lid body (110) and an unlocked state that unlocks the pot body (100) and the lid body (110). A drive motor (134) is tractively connected to the cover opening assembly; A mains power detection circuit (151) is configured to detect a power failure signal; A power storage device (158) connected to the drive motor (134); and A control unit is electrically connected to the drive motor (134), the mains power detection circuit (151), and the energy storage device (158). The control unit is configured to control the energy storage device (158) to supply power to the drive motor (134) and control the drive motor (134) to rotate according to the power failure signal.

2. The cooking utensil according to claim 1, characterized in that, The cover (110) includes a first receiving cavity (111a1); The cooking appliance includes a control circuit board (116) with the control unit, the control circuit board (116) being housed in the first receiving cavity (111a1).

3. The cooking utensil according to claim 2, characterized in that, The cover (110) further includes a second receiving cavity (111a2), in which the energy storage device (158) is housed.

4. The cooking utensil according to claim 1, characterized in that, The cooking appliance includes a control circuit board (116); The control unit and the energy storage device (158) are disposed on the control circuit board (116).

5. The cooking utensil according to claim 1, characterized in that, The energy storage device (158) includes a capacitor or a battery.

6. The cooking utensil according to any one of claims 1 to 5, characterized in that, The cover opening assembly (130) includes: A fastening element (131) is movably disposed on the cover (110) radially between a locked position and an unlocked position; the fastening element (131) in the locked position is locked to the cover (110) and the pot body (100); and A rotating frame (132) is rotatably disposed on the cover (110) around a first axis (AX1) and connected to the drive motor (134). The rotating frame (132) is driven to the fastening member (131) to drive the fastening member (131) to move.

7. The cooking utensil according to claim 6, characterized in that, The cooking appliance includes: A position detection device (140) is disposed on the cover (110) and connected to the battery storage device (158) and the control unit. The position detection device (140) is arranged correspondingly to the rotating frame (132) or the fastening member (131) to detect the position signal of the fastening member (131). The control unit is configured to switch the operating state of the drive motor based on the position signal detected by the position detection device.

8. The cooking utensil according to claim 7, characterized in that, The rotating frame (132) includes a triggering part (132c). The position detection device (140) includes: A locking position detection device (141) is arranged corresponding to the trigger part (132c). The locking position detection device (141) is configured to detect the position signal of the trigger part (132c) when the fastener (131) is in the locked position.

9. The cooking utensil according to claim 7, characterized in that, The rotating frame (132) includes a triggering part (132c). The position detection device (140) includes: An unlock position detection device (142) is arranged corresponding to the trigger part (132c). The unlock position detection device (142) is configured to detect the position signal of the trigger part (132c) when the fastener (131) is in the unlock position.

10. The cooking utensil according to claim 6, characterized in that, The cover (110) includes a cover body (117), which is provided with a float component (136); the rotating frame (132) is connected to the cover body (117), and the rotating frame (132) is provided with a limiting hole (132b) for engaging with the float component (136); when the fastener (131) is in the locked position, 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).

Images