A cooking apparatus

Abstract

This invention discloses a cooking device with a steaming function, including a water tank assembly. The water tank assembly includes a water tank receiving cavity with a water tank opening for removal and placement. The cooking device also includes a resistance generating unit, which generates a first resistance in response to a first thrust. The first resistance acts on the same object as the first thrust, but in the opposite direction, and the first resistance is greater than or equal to the first thrust. The first thrust is the force applied to the water tank receiving cavity by the user when placing the water tank in the receiving cavity. The technical solution of this invention prevents the user from manually resetting the water tank assembly, ensuring the stability of the internal components of the cooking device and reducing the impact on the lifespan of the cooking device.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and more particularly to a cooking device. Background Technology

[0002] Currently, cooking appliances with steaming functions (such as steam ovens and steam ovens) typically have a water tank assembly and a drive assembly. The water tank assembly includes a water tank receiving cavity with a water tank loading and unloading opening for accommodating the water tank. The drive assembly is used to drive the water tank assembly to move, enabling the water tank assembly to be pushed out and retracted for operations such as adding water, changing water, or emptying water.

[0003] In the existing technology, if the user applies too much force when putting the water tank back into the water tank cavity, the water tank assembly may move. The drive assembly may also be forced to move due to external force. This not only abandons the automated function of the drive assembly driving the water tank assembly to retract and reset, but may also damage the structural stability and performance stability of the drive assembly in the long run, affecting the service life of the cooking device. Summary of the Invention

[0004] This invention provides a cooking device that prevents the user from manually resetting the water tank assembly, ensuring the stability of the internal components of the cooking device and reducing the impact on the lifespan of the cooking device.

[0005] The cooking device provided by the present invention has a steaming function. The cooking device includes a water tank assembly, which includes a water tank receiving cavity and a water tank opening for removing and placing water tanks.

[0006] The cooking device also includes:

[0007] The resistance generating unit is used to generate a first resistance in response to the first thrust. The first resistance acts on the same object as the first thrust, but in the opposite direction, and the first resistance is greater than or equal to the first thrust.

[0008] The first thrust is the force applied to the water tank cavity when the user places the water tank into the water tank cavity.

[0009] Optionally, the cooking device also includes a control panel that is linked to the water tank assembly, and the state of the control panel switches between exposing the water tank access opening and obscuring the water tank access opening.

[0010] Optionally, the cooking device also includes a drive motor for driving the water tank assembly to move;

[0011] The drive motor is also reused as a resistance generating unit.

[0012] Optionally, the drive motor includes a first terminal and a second terminal;

[0013] The cooking device also includes a controller and a motor control circuit, which are electrically connected to the controller and the drive motor, respectively.

[0014] The motor control circuit includes a first state and a second state. In the first state, the motor control circuit is used to electrically connect the drive motor to the power supply, and in the second state, it is also used to electrically connect the first terminal and the second terminal of the drive motor to form a closed loop, and there is no power supply in the closed loop.

[0015] The controller is used to control the switching of the motor control circuit between the first state and the second state.

[0016] Optionally, the motor control circuit includes a power signal terminal and a ground signal terminal; in the first state, one of the first terminal and the second terminal is electrically connected to the power signal terminal, and the other is electrically connected to the ground signal terminal.

[0017] Optionally, the motor control circuit further includes a first switching switch and a first control switch; the controller includes a first control signal terminal;

[0018] The first control switch is electrically connected to the first control signal terminal and the first switching switch respectively; the first switching switch includes a first contact, a second contact and a third contact; the first contact is electrically connected to the first terminal; the second contact is electrically connected to the power signal terminal; the third contact is electrically connected to the second terminal and to the ground signal terminal.

[0019] In the first state, the first control signal terminal has an enable signal, and the controller controls the first control switch to be turned on so that the first contact and the second contact are turned on;

[0020] In the second state, there is no enable signal at the first control signal terminal, the first control switch is off, and the first contact and the third contact are connected.

[0021] Optionally, the first state includes a first sub-state and a second sub-state;

[0022] In the first sub-state, the first terminal is electrically connected to the power signal terminal, and the second terminal is electrically connected to the ground signal terminal;

[0023] In the second sub-state, the second terminal is electrically connected to the power signal terminal, and the first terminal is electrically connected to the ground signal terminal.

[0024] Optionally, the motor control circuit further includes a first switching switch, a first control switch, a second switching switch, and a second control switch; the controller includes a first control signal terminal and a second control signal terminal.

[0025] The first control switch is electrically connected to the first control signal terminal and the first switching switch respectively; the second control switch is electrically connected to the second control signal terminal and the second switching switch respectively; the first switching switch includes a first contact, a second contact and a third contact; the second switching switch includes a fourth contact, a fifth contact and a sixth contact; the first contact is electrically connected to the first terminal; the fourth contact is electrically connected to the second terminal; the second contact and the fifth contact are both electrically connected to the power signal terminal; the third contact and the sixth contact are electrically connected and are also electrically connected to the ground signal terminal.

[0026] In the first sub-state, the first control signal terminal has an enable signal, and the controller controls the first control switch to be turned on so that the first contact and the second contact are turned on. At the same time, the second control signal terminal has no enable signal, the second control switch is turned off, and the fourth contact and the sixth contact are turned on.

[0027] In the second sub-state, there is no enable signal at the first control signal terminal, the first control switch is off, and the first and third contacts are connected. At the same time, the second control signal terminal has an enable signal, and the controller controls the second control switch to be turned on so that the fourth and fifth contacts are connected.

[0028] In the second state, neither the first control signal terminal nor the second control signal terminal has an enable signal, both the first control switch and the second control switch are off, the first contact and the third contact are on, and the fourth contact and the sixth contact are on.

[0029] Optionally, both the first switching switch and the second switching switch are relays, and both the first control switch and the second control switch are transistors; the power signal terminal includes a first power signal terminal and a second power signal terminal.

[0030] The first switching switch also includes a first coil, the first end of the first coil is electrically connected to the first power signal terminal, the second end of the first coil is electrically connected to the collector of the first control switch, the emitter of the first control switch is grounded, and the base of the first control switch is electrically connected to the first control signal terminal.

[0031] The second switching switch also includes a second coil. The first end of the second coil is electrically connected to the second power signal terminal, the second end of the second coil is electrically connected to the collector of the second control switch, the emitter of the second control switch is grounded, and the base of the second control switch is electrically connected to the second control signal terminal.

[0032] Optionally, the second contact and the fifth contact are electrically connected, and both are electrically connected to the first power signal terminal.

[0033] The technical solution of this invention includes a resistance generating unit in the cooking device. The resistance generating unit generates a first resistance in response to a first thrust. The first resistance acts on the same object as the first thrust, but in the opposite direction, and the first resistance is greater than or equal to the first thrust. This allows the first resistance generated by the resistance generating unit to counteract the force (i.e., the first thrust) applied to the water tank cavity when the user pushes the water tank into it. This prevents the water tank assembly and drive assembly from moving backward due to human intervention, making it impossible for the user to manually reset the water tank assembly. This reduces the number of times the water tank assembly needs to be manually reset, thus reducing the impact on the lifespan of the cooking device.

[0034] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of a cooking device provided in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of another cooking device provided in an embodiment of the present invention;

[0038] Figure 3 Is with Figure 2 A partial structural diagram of the corresponding cooking device;

[0039] Figure 4 Is with Figure 2 Another partial structural diagram of the corresponding cooking device;

[0040] Figure 5 This is a schematic diagram of the circuit principle of the motor control circuit in the cooking device provided in the embodiment of the present invention in the first state;

[0041] Figure 6 This is a schematic diagram of the circuit principle of the motor control circuit in the cooking device provided in the embodiment of the present invention in the second state;

[0042] Figure 7 This is a schematic diagram illustrating the working principle of the cooking device provided in this embodiment of the invention;

[0043] Figure 8This is a circuit diagram of the motor control circuit in the cooking device provided in the embodiment of the present invention in a first state;

[0044] Figure 9 This is a circuit diagram of the motor control circuit in the cooking device provided in the embodiment of the present invention in a second state;

[0045] Figure 10 This is a circuit diagram of the motor control circuit in the cooking device provided in the embodiment of the present invention in a first sub-state;

[0046] Figure 11 This is a circuit diagram of the motor control circuit in the cooking device provided in the embodiment of the present invention in a second sub-state;

[0047] Figure 12 This is another circuit diagram of the motor control circuit in the cooking device provided in the embodiment of the present invention in the second state. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0049] First, it should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes. Furthermore, the shapes and sizes of the components in the accompanying drawings do not reflect actual proportions and are only intended to illustrate the content of this invention.

[0050] Figure 1 This is a schematic diagram of a cooking device provided in an embodiment of the present invention. The cooking device has a steaming function, such as a steam oven or a steam-baking oven. Figure 1 As shown, the cooking device 100 includes a water tank assembly 11. The water tank assembly 11 includes a water tank receiving cavity 111 and a water tank 112. The water tank receiving cavity 111 has a water tank loading / unloading opening 1110. In addition, the cooking device 100 also includes a resistance generating unit (not shown) for generating a first resistance f in response to a first thrust T. The first resistance f acts on the same object as the first thrust T, but in the opposite direction, and the first resistance f is greater than or equal to the first thrust T. The first thrust T is the force applied to the water tank receiving cavity 111 by the user when placing the water tank 112 into the water tank receiving cavity 111.

[0051] The water tank receiving cavity 111 is used to accommodate the water tank 112. For products that use water recycling, there may be one water tank. For products that separate purified water and wastewater, the water tank 112 may be at least one of a water tank for storing purified water and a water tank for storing wastewater. This embodiment of the invention does not limit this.

[0052] like Figure 1 As shown, the cooking apparatus 100 also includes a drive assembly 13. Under normal power conditions, the drive assembly 13 drives the water tank assembly 11 to move, enabling the water tank assembly 11 to be pushed outward and retracted inward for operations such as adding, changing, or emptying water. Specifically, the drive assembly 13 may include a drive motor; by controlling the rotation of the drive motor, the water tank assembly 11 can be moved.

[0053] Under normal power conditions, the specific control process is as follows: based on the user's instruction to remove the water tank, the drive component 13 is controlled to move at least a portion of the water tank component 11 to the outside of the tank body 101 to expose the water tank opening. After the user removes the water tank, adds water, and puts it back in the water tank, an instruction to recycle the water tank can be sent. Based on this instruction, the drive component 13 can be controlled to recycle the water tank component 11 back into the tank body 101.

[0054] In related technologies, to prevent the water tank assembly from failing to reset due to occasional power outages / abnormalities, it is typically designed to be manually pushed back to its original position (i.e., inside the cooking device). (Refer to...) Figure 1For existing cooking devices that can manually reset the water tank assembly in the event of a power outage / abnormal situation, this means that when the user pushes the water tank 112 into the water tank receiving cavity 111 under normal power conditions, if the water tank 112 is already fully placed inside the water tank receiving cavity 111, and the user continues to push the water tank 112 inward, the pushing force (i.e., the first pushing force) exerted by the user on the water tank 112 will be transmitted to the water tank receiving cavity 111, causing the water tank receiving cavity 111 to also experience the user's first pushing force T. If the first pushing force is large, it will push the water tank assembly 11 and the drive assembly 13 to move, thus enabling the water tank assembly 11 to be manually reset. However, since power outages / abnormal situations are occasional, while the user's operation of removing and placing the water tank is frequent, if the user still frequently manually resets the water tank assembly under normal power conditions, not only will the automated function of the drive assembly driving the water tank assembly to retract and reset be abandoned, but in the long run, it may also damage the structural stability and performance stability of the drive assembly, affecting the service life of the cooking device.

[0055] To avoid this situation, the cooking device 100 in this embodiment of the invention also includes a resistance generating unit, which generates a first resistance f in response to the first thrust T. That is, once the resistance generating unit senses the first thrust T, it will generate the first resistance f accordingly. Since the first resistance f and the first thrust T act on the same object but in opposite directions, and the first resistance f is greater than or equal to the first thrust T, the first resistance can counteract the force (i.e., the first thrust) exerted on the water tank cavity when the user pushes the water tank into the water tank cavity. This prevents the water tank assembly and the drive assembly from moving backward due to human force, making it impossible for the user to manually reset the water tank assembly under power / normal conditions. This reduces the number of times the water tank assembly needs to be manually reset, thus reducing the impact on the service life of the cooking device.

[0056] It should be noted that the first resistance f and the first thrust T act on the same object. This can be because the two forces act on the same object directly or indirectly. This embodiment of the invention does not limit this. For example, the first thrust T acts directly on the water tank 112, and is transmitted through the water tank 112 to the water tank cavity 111, and then to the drive assembly 13. The first resistance f can act directly on the water tank cavity 111, or it can be transmitted to the water tank cavity 111 through other components. This embodiment of the invention does not limit this.

[0057] It should also be noted that the resistance generating unit can be a newly added component based on the structure of the original cooking device, or the original structure can be reused as the resistance generating unit. The embodiments of the present invention do not limit this.

[0058] It should also be noted that, in the event of a power outage / abnormality, this embodiment of the invention does not limit whether the resistance generating unit can respond to the first thrust to generate the first resistance. When the resistance generating unit cannot respond to the first thrust to generate the first resistance in the event of a power outage / abnormality, the function of allowing the user to manually reset the water tank assembly can be retained. When the resistance generating unit can also respond to the first thrust to generate the first resistance in the event of a power outage / abnormality, the user cannot manually reset the water tank assembly. However, considering that power outages / abnormalities are occasional events, and users frequently remove and place the water tank, the protection of the cooking device can be prioritized, allowing the resistance generating unit to respond to the first thrust to generate the first resistance in the event of a power outage / abnormality. Those skilled in the art can design according to their own product needs, and this embodiment of the invention does not limit this.

[0059] In summary, the technical solution of this invention, by setting a resistance generating unit, generates a first resistance in response to a first thrust, and makes the first resistance act on the same object as the first thrust but in the opposite direction, and the first resistance is greater than or equal to the first thrust. Thus, the first resistance generated by the resistance generating unit can counteract the force (i.e., the first thrust) applied to the water tank cavity when the user pushes the water tank into the water tank cavity, preventing the water tank assembly and drive assembly from moving backward due to human force. This makes it impossible for the user to manually reset the water tank assembly under power / normal conditions, thereby reducing the number of times the water tank assembly needs to be manually reset and reducing the impact on the service life of the cooking device.

[0060] Figure 2 This is a schematic diagram of another cooking device provided in an embodiment of the present invention. Figure 3 Is with Figure 2 A partial structural diagram of the corresponding cooking device. Figure 4 Is with Figure 2 Another schematic diagram of a corresponding partial structure of the cooking apparatus shows the partial structure of the cooking apparatus in different states. For example... Figures 2-4 As shown, optionally, the cooking apparatus 100 also includes a control panel 12, which is linked to the water tank assembly 11. The state of the control panel 12 is such that the water tank access opening 1110 is exposed (e.g., ...). Figure 2 and Figure 3 ) and obstructing the water tank access opening 1110 (e.g. Figure 4 Switching between the control panel 12 and the water tank assembly 11 can be hidden through the control panel 12, thus improving the product's aesthetics.

[0061] The control panel 12 is used for interaction between the user and the cooking device 100. The user can input commands through the control panel 12 to control the operating status of the cooking device 100, and can also control the extension and retraction of the control panel 12 and the water tank assembly 11. After extending the water tank assembly 11 and the control panel 12, the control panel 12 exposes the water tank access opening 1110 to facilitate the removal of the water tank 112 for adding or emptying water. After placing the water tank 112 back into the water tank receiving cavity 111, the water tank assembly 11 and the control panel 12 can be retracted, with the control panel 12 covering the water tank assembly 11. For example... Figure 2 and Figure 3 The diagram shows the state of the control panel 12 when the water tank access opening 1110 is exposed. Figure 4 This shows the state when the control panel 12 blocks the water tank access opening 1110. (As shown) Figure 2 As shown, the cooking device includes a housing 101 and a door 102. The control panel 12 and the door 102 can be located on the same side for easy operation by the user.

[0062] Reference Figure 3 and Figure 4 The control panel 12 and the water tank assembly 11 are linked. Specifically, the drive assembly 13 drives the control panel 12 and the water tank assembly 11 to move together. In this way, the state of the control panel 12 can be switched between exposing the water tank opening 1110 and blocking the water tank opening 1110 by the drive assembly 13.

[0063] like Figure 3 and Figure 4 As shown, optionally, the cooking apparatus 100 also includes a control module 14; the control module 14 is electrically connected to the drive assembly 13, and the drive assembly 13 is mechanically connected to both the water tank assembly 11 and the control panel 12; the control module 14 is used to move at least a portion of the water tank assembly 11 to the outside of the tank body via the drive assembly 13 during the first process, while simultaneously exposing the control panel 12 to the water tank access opening 1110 (e.g., ...). Figure 3 The control module 14 is also used in the second process to drive the water tank assembly 11 to move into the interior of the tank via the drive assembly 13, while simultaneously causing the control panel 12 to block the water tank loading / unloading opening 1110 (e.g., ...). Figure 4 It should be noted that, Figure 3 and Figure 4 Electrical connections are represented by thin solid lines, and mechanical connections are represented by thick solid lines.

[0064] like Figure 3 and Figure 4 As shown, optionally, the drive assembly 13 includes a drive motor 131 and a transmission mechanism 132. The control module 14 is electrically connected to the drive motor 131, and the drive motor 131 is mechanically connected to the water tank assembly 11 and the control panel 12 through the transmission mechanism 132.

[0065] like Figure 3 and Figure 4 As shown, optionally, the transmission mechanism 132 includes a reducer 1321 and a transmission rod 1322. Specifically, the reducer 1321 can be, for example, a gear reducer, which can convert the high-speed rotation of the drive motor 131 into the low-speed movement of the transmission rod 1322, while amplifying the torque. The water tank assembly 11 and the control panel 12 are mechanically connected to different transmission rods 1322, such as... Figure 3 As shown, optionally, the transmission rod 1322 connected to the water tank assembly 11 and the transmission rod 1322 connected to the control panel 12 are connected together, so that the control panel 12 and the water tank assembly 11 can be linked together, and the control module 14 can drive the control panel 12 and the water tank assembly 11 to move together through the drive component 13.

[0066] Furthermore, the control panel 12 and the control module 14 are electrically / communically connected. The first process described above is the process of pushing the water tank assembly 11 and the control panel 12 outwards. Specifically, when the user sends a command to the control module 14 via the control panel 12 to push out the water tank, the control module 14 can use the drive component 13 to move the water tank assembly 11 and the control panel 12 outwards together, causing at least a portion of the water tank assembly 11 to move outside the tank body, while simultaneously exposing the water tank access opening 1110 on the control panel 12. The second process described above is the process of resetting the water tank assembly 11 and the control panel 12 inwards. Specifically, when the user sends a command to the control module 14 via the control panel 12 to retract the water tank, the control module 14 can use the drive component 13 to move the water tank assembly 11 and the control panel 12 inwards together, causing the water tank assembly 11 to move inside the tank body, while simultaneously blocking the water tank access opening 1110 on the control panel 12.

[0067] The above describes the automatic control process related to the extension and reset of the water tank assembly 11 and the control panel 12. It can be understood that while the water tank assembly 11 moves horizontally outwards, the control panel 12 first moves horizontally and then rises diagonally upwards; while the water tank assembly 11 moves horizontally inwards, the control panel 12 first falls diagonally downwards and then moves horizontally. Since the water tank assembly 11 and the control panel 12 are linked, if the water tank assembly 11 can be manually reset in the event of a power outage / abnormal condition, the control panel 12 can also be reset accordingly. In actual operation, the control panel 12 can be manually pushed to reset both the control panel 12 and the water tank assembly 11 together.

[0068] However, before resetting, the user needs to put the water tank 112 back into the water tank cavity 111. As described above, for such products, if the cooking device has the function of manually resetting the water tank assembly 11 and the control panel 12 in the event of power failure / abnormality, it means that when the user puts the water tank 112 back into the water tank cavity 111 under normal power conditions, if the water tank 112 is already completely placed in the water tank cavity 111, and the user still pushes the water tank 112 inward, the pushing force applied by the user to the water tank 112 (i.e. the first pushing force mentioned above) will be transmitted to the water tank cavity 111, and then to the drive assembly 13, causing the transmission mechanism 132 to move backward and the drive motor 131 to rotate. At the same time, it will drive the water tank assembly 11 to move backward and the control panel 12 to fall, which may cause the control panel 12 to hit / pinch the user's hand, creating a safety hazard.

[0069] To solve this problem, refer to Figure 3 Similarly, the cooking device can also include a resistance generating unit (not shown), which generates a first resistance f in response to the first thrust T, and the first resistance f acts on the same object as the first thrust T but in the opposite direction, and the first resistance f is greater than or equal to the first thrust T.

[0070] Specifically, refer to Figure 3 Since the first resistance f and the first thrust T act on the same object but in opposite directions, and the first resistance f is greater than or equal to the first thrust T, it can counteract the force (i.e. the first thrust T) applied to the water tank 111 when the user pushes the water tank 112 into the water tank 111, thus preventing the water tank assembly 11 and the transmission mechanism 132 from moving backward and preventing the control panel 12 from falling. This prevents the user from manually resetting the water tank assembly under power / normal conditions, thereby reducing the impact on the service life of the cooking device. At the same time, it can prevent the user from being hit / pinched by the control panel 12 when putting the water tank back, ensuring the safety of the process of taking the water tank out and putting it in.

[0071] Based on any of the above embodiments, the specific implementation of the resistance generating unit and its method for generating first resistance in response to the first thrust will be further described in detail below. Since both types of cooking devices can adopt the design scheme of the embodiments of the present invention, only one of them (e.g., Figure 2 The explanation is based on the cooking apparatus shown.

[0072] Optionally, the drive assembly 13 is reused as a resistance generating unit. Specifically, in the first and second processes described above, the drive motor 131 in the drive assembly 13 serves as the drive source. The rotation of the drive motor 131 drives the transmission mechanism 132 to move, thereby moving the water tank assembly 11 and the control panel 12, realizing the push-out and reset of the water tank assembly 11 and the control panel 12. Therefore, the drive motor 131 can apply a force to the water tank receiving cavity 111 through the transmission mechanism 132 in the first and second processes, and this force is consistent with the target of the first thrust, and can be used as a resistance generating unit to provide the first resistance. In this embodiment, by reusing the drive assembly 13 as a resistance generating unit, specifically by resetting the drive motor 131 in the drive assembly 13 as a resistance generating unit, the original structure in the cooking device can be used to respond to the first thrust and generate the first resistance. This prevents the user from manually resetting the water tank assembly under power / normal conditions, reducing the impact on the service life of the cooking device. It also prevents the user from being hit by the control panel when putting the water tank back, ensuring the safety of the process of taking out and putting in the water tank, and saving manufacturing costs.

[0073] The following is a detailed description of a feasible implementation in which the drive component 13 is reused as a resistance generating unit, and the drive motor 131 generates a first resistance in response to a first thrust.

[0074] Figure 5 This is a schematic diagram of the motor control circuit in the cooking device provided in the embodiment of the present invention in the first state. Figure 6 This is a schematic diagram of the motor control circuit in the cooking apparatus provided in the embodiment of the present invention in the second state, as shown below. Figure 5 and Figure 6 As shown, optionally, the drive motor includes a first terminal a and a second terminal d; the cooking device also includes a controller 141 and a motor control circuit 142, the motor control circuit 142 being electrically connected to the controller 141 and the drive motor 131 respectively; the motor control circuit 142 includes a first state (such as...). Figure 5 ) and second state (such as Figure 6 ); Motor control circuit 142 is used to connect drive motor 131 to power supply in the first state. Figure 5 The P terminal (marked as the power signal terminal) is electrically connected, and is also used to electrically connect the first terminal a and the second terminal d of the drive motor 131 in the second state to form a closed loop (e.g., ...). Figure 6 The closed loop is selected by the dashed ellipse in the middle, and there is no power supply in the closed loop; the controller 141 is used to control the motor control circuit 142 to switch between the first state and the second state.

[0075] The first terminal a and the second terminal d are electrically connected to the two ends of the coil in the drive motor 131, respectively.

[0076] Specifically, when it is necessary to drive the motor 131 to rotate, the controller 141 needs to control the motor control circuit 142 to be in the first state, and when it is not necessary to drive the motor 131 to rotate, the controller 141 needs to control the motor control circuit 142 to be in the second state.

[0077] Reference Figure 5 When the controller 141 controls the motor control circuit 142 to be in the first state, the drive motor 131 can be electrically connected to the power supply. In this way, the drive motor 131 can rotate, thereby driving the water tank assembly 11 and the control panel 12 to push out or retract inward to reset.

[0078] like Figure 5 As shown, optionally, the motor control circuit 142 includes a power signal terminal P and a ground signal terminal G; in the first state, one of the first terminal a and the second terminal d is electrically connected to the power signal terminal P, and the other is electrically connected to the ground signal terminal G, so that the drive motor 131 is electrically connected to the power supply. Figure 5 The illustration is based on the example of the first terminal a being electrically connected to the power signal terminal P and the second terminal d being electrically connected to the ground signal terminal G. In other embodiments, the second terminal d may also be electrically connected to the power signal terminal P and the first terminal a to the ground signal terminal G. Different connection methods only affect the rotation direction of the drive motor 131. Those skilled in the art can design their own methods, and the embodiments of the present invention do not limit this.

[0079] Reference Figure 6 When the controller 14 controls the motor control circuit 142 in the second state, the first terminal a and the second terminal d of the drive motor 131 can be electrically connected, forming a closed loop between the coil of the drive motor 131 and a portion of the circuit in the motor control circuit 142, and there is no power supply in this closed loop. Thus, when the user pushes the water tank 112, if excessive force causes the water tank cavity 111 to move backward, the drive motor 131 will rotate via the transmission mechanism 132. The coil of the drive motor 131 in the closed loop will cut magnetic field lines within its internal magnetic field, generating an induced current in the closed loop. This magnetic field then generates an Ampere force (the resultant force of the Lorentz forces acting on the moving charge) on the energized coil. The direction of this Ampere force is opposite to the rotation direction of the drive motor 131 under the user's external force, thus resisting the user's external force and preventing the manual retraction of the water tank assembly and control panel, avoiding the control panel falling and injuring the user's hand. It is understood that in this embodiment, the Ampere force is the aforementioned first resistance.

[0080] For example, Figure 7 This is a schematic diagram illustrating the working principle of the cooking device provided in the embodiments of the present invention, such as... Figure 7As shown, assuming the user applies a pushing force to the water tank cavity 111 when pushing the water tank 112, causing the drive motor to rotate clockwise, the coil of the drive motor in the closed circuit will also rotate clockwise. This causes the drive motor coil to cut magnetic field lines within the internal magnetic field, producing a motion similar to... Figure 7 The induced current, in the direction shown, then generates an Ampere force on the energized coil through a magnetic field, as... Figure 7 As shown, the direction of the Ampere force (Lorentz force) can cause the coil of the drive motor to rotate counterclockwise, which is opposite to the direction of rotation of the drive motor under the user's external force. This can resist the user's external force, prevent the water tank assembly and control panel from being retracted, and avoid the control panel falling and injuring the user's hand.

[0081] As described above, the transmission mechanism 132 includes a reducer 1321. It is understood that the reducer 1321 reduces speed when converting the rotation of the drive motor 131 into movement of the water tank assembly 11 and the control panel 12, and accelerates movement when converting the movement of the water tank assembly 11 and the control panel 12 into rotation of the drive motor 131. Therefore, when the user pushes or places the water tank, if excessive force causes the water tank cavity 111 to move backward a small distance, the drive motor 131 will generate a large rotational speed, thus producing a large induced current and Ampere force. This Ampere force (first resistance) is sufficient to counteract the user's external force (first thrust), keeping the water tank assembly 11 and the control panel 12 essentially stationary, ensuring the safety of the water tank placement and removal process.

[0082] It should be noted that, by improving the motor control circuit 142, this embodiment of the invention creates a closed loop between the drive motor coil and a portion of the circuitry in the motor control circuit during the water tank placement and removal process. Therefore, regardless of whether there is power / normal operation or power outage / abnormal operation, this closed loop persists. When the user pushes the water tank into the water tank cavity, if excessive force causes the water tank cavity to move backward a small distance, the drive motor will generate an Ampere force to resist the user's external force, preventing the user from manually retracting and resetting the water tank assembly and control panel. Although this solution prevents the user from manually retracting and resetting the water tank assembly and control panel in the event of a power outage / abnormal operation, considering that power outages are infrequent while water tank placement and removal are frequent, the need for manual retraction and resetting of the water tank assembly and control panel is rare. This function can be sacrificed to prioritize the safety of the water tank placement and removal process and the lifespan of the cooking device.

[0083] In one specific embodiment, optionally, the drive motor 131 rotates in the same direction when it drives the water tank assembly 11 and the control panel 12 to push outward and when it drives the water tank assembly 11 and the control panel 12 to retract and reset inward. For example, both rotate clockwise or both rotate counterclockwise. In this case, forward and backward movement can be achieved by setting a crank connecting rod or a crank slider, thereby realizing the pushing out and resetting of the water tank assembly 11 and the control panel 12.

[0084] Correspondingly, Figure 8 This is a circuit diagram of the motor control circuit in the cooking device provided in an embodiment of the present invention in a first state. Figure 9 This is a circuit diagram of the motor control circuit in the cooking device provided in the embodiment of the present invention in a second state, as shown below. Figure 8 and Figure 9 As shown, optionally, the motor control circuit 142 further includes a first switching switch K1 and a first control switch Q1; the controller 141 includes a first control signal terminal x; the first control switch Q1 is electrically connected to the first control signal terminal x and the first switching switch K1 respectively; the first switching switch K1 includes a first contact i, a second contact g, and a third contact h; the first contact i is electrically connected to the first terminal a; the second contact g is electrically connected to the power signal terminal P; the third contact h is electrically connected to the second terminal d and to the ground signal terminal G; in the first state (e.g. Figure 8 In the first control signal terminal x, there is an enable signal (hereinafter referred to as [1] to indicate that there is an enable signal). The controller 141 controls the first control switch Q1 to be turned on, so that the first contact i and the second contact g are turned on, thereby enabling the drive motor 131 to be electrically connected to the power supply; in the second state (such as Figure 9 When there is no enable signal at the first control signal terminal x (where [0] indicates no enable signal, the same below), the first control switch Q2 is turned off, and the first contact i and the third contact h are turned on, so that the first terminal a, the first contact i, the third contact h, the second terminal d and the coil of the drive motor 131 can form a closed circuit.

[0085] like Figure 8 and Figure 9 As shown, optionally, the first control switch Q1 is a transistor, and the first switching switch K1 is a relay, including a first coil KA1. The first end of the first coil KA1 is electrically connected to the power signal terminal P, the second end of the first coil KA1 is electrically connected to the collector c of the first control switch Q1, the emitter e of the first control switch Q1 is grounded, and the base b of the first control switch Q1 is electrically connected to the first control signal terminal x. Thus, the controller 141 can control the on / off state of the first control switch Q1 by controlling the output signal of the first control signal terminal x, thereby controlling the energization of the first coil KA1, adjusting the conduction path in the corresponding contact group, and causing the motor control circuit 142 to switch between the first state and the second state.

[0086] In another specific embodiment, optionally, the drive motor 131 rotates in opposite directions when it pushes the water tank assembly 11 and the control panel 12 outward and when it retracts the water tank assembly 11 and the control panel 12 inward. For example, when the drive motor 131 rotates clockwise, it can push the water tank assembly 11 and the control panel 12 outward, and when the drive motor 131 rotates counterclockwise, it can retract the water tank assembly 11 and the control panel 12 back to their original positions. This can reduce the design difficulty of the transmission mechanism.

[0087] Correspondingly, the first optional state includes a first sub-state and a second sub-state; in the first sub-state, the first terminal a is electrically connected to the power signal terminal P, and the second terminal d is electrically connected to the ground signal terminal G; in the second sub-state, the second terminal d is electrically connected to the power signal terminal P, and the first terminal a is electrically connected to the ground signal terminal G.

[0088] In this circuit, the motor control circuit 142 can connect the drive motor 131 to the power supply in both the first and second sub-states, causing the drive motor 131 to rotate. The difference is that in the first sub-state, the current direction in the drive motor 131 is from the first terminal a to the second terminal d, while in the second sub-state, the current direction in the drive motor 131 is from the second terminal d to the first terminal a. This results in the drive motor 131 having opposite currents in the first and second sub-states, thereby enabling rotation in opposite directions. Consequently, the water tank assembly 11 and the control panel 12 can be pushed out and reset in the first and second sub-states, respectively.

[0089] For example, in the first sub-state, the first terminal a is electrically connected to the power signal terminal P, and the second terminal d is electrically connected to the ground signal terminal G. The drive motor rotates clockwise, which can push out the water tank assembly 11 and the control panel 12. In the second sub-state, the second terminal d is electrically connected to the power signal terminal P, and the first terminal a is electrically connected to the ground signal terminal G. The drive motor rotates counterclockwise, which can reset the water tank assembly 11 and the control panel 12.

[0090] For example, Figure 10 This is a circuit diagram of the motor control circuit in the cooking device provided in an embodiment of the present invention in a first sub-state. Figure 11 This is a circuit diagram of the motor control circuit in the cooking device provided in an embodiment of the present invention in a second sub-state. Figure 12 This is another circuit diagram of the motor control circuit in the cooking device provided in the embodiment of the present invention in the second state, as shown below. Figures 10-12Optionally, the motor control circuit 142 further includes a first switching switch K1, a first control switch Q1, a second switching switch K2, and a second control switch Q2; the controller 141 includes a first control signal terminal x and a second control signal terminal y; the first control switch Q1 is electrically connected to the first control signal terminal x and the first switching switch K1 respectively; the second control switch Q2 is electrically connected to the second control signal terminal y and the second switching switch K2 respectively; the first switching switch K1 includes a first contact i, a second contact g, and a third contact h; the second switching switch K2 includes a fourth contact j, a fifth contact m, and a sixth contact n; the first contact i is electrically connected to the first terminal a; the fourth contact j is electrically connected to the second terminal d; the second contact g and the fifth contact m are both electrically connected to the power signal terminal P; the third contact h and the sixth contact n are electrically connected and are also electrically connected to the ground signal terminal G.

[0091] like Figure 10 As shown, in the first sub-state, the first control signal terminal x has an enable signal ([1]), and the controller controls the first control switch Q1 to be turned on so that the first contact i and the second contact g are turned on. At the same time, the second control signal terminal y has no enable signal ([0]), the second control switch Q2 is turned off, and the fourth contact j and the sixth contact n are turned on. At this time, the current flows from the power signal terminal (P1) through the second contact g, the first contact i, the first terminal a, the second terminal d, the fourth contact j and the sixth contact n in sequence and then to the ground. The current direction in the drive motor 131 is from the first terminal a to the second terminal d, which can make the drive motor 131 rotate (for example, forward / clockwise rotation), and then drive the water tank assembly 11 and the control panel 12 to be pushed outward through the transmission mechanism 132, so that the control panel 12 is exposed in the water tank loading and unloading opening 1110.

[0092] like Figure 11 As shown, in the second sub-state, the first control signal terminal x has no enable signal ([0]), the first control switch Q1 is off, the first contact i and the third contact h are on, and at the same time, the second control signal terminal y has an enable signal ([1]), and the controller controls the second control switch Q2 to be on so that the fourth contact j and the fifth contact m are on. At this time, the current flows from the power signal terminal (P1) through the fifth contact m, the fourth contact j, the second terminal d, the first terminal a, the first contact i and the third contact h in sequence and then to the ground. The current direction in the drive motor 131 is from the second terminal d to the first terminal a, which can make the drive motor rotate (e.g., reverse / counterclockwise rotation), and then drive the water tank assembly 11 and the control panel 12 to retract inward through the transmission mechanism 132, so that the control panel blocks the water tank loading and unloading opening 1110.

[0093] It should be noted that the above embodiment is only illustrated by taking the example of pushing out the water tank assembly 11 and the control panel 12 when the drive motor rotates forward and retracting the water tank assembly 11 and the control panel 12 when the drive motor rotates in reverse. In other embodiments, the water tank assembly 11 and the control panel 12 can also be set to push out when the drive motor rotates forward and retract when the drive motor rotates in reverse. The embodiments of the present invention do not limit this, and the following will only use the former as an example for explanation.

[0094] like Figure 12 As shown, in the second state, neither the first control signal terminal x nor the second control signal terminal y has an enable signal ([0]), both the first control switch Q1 and the second control switch Q2 are off, the first contact i and the third contact h are on, and the fourth contact j and the sixth contact n are on. At this time, the first terminal a, the first contact i, the third contact h, the sixth contact n, the fourth contact j, and the second terminal d are connected in sequence and form a closed circuit with the coil inside the drive motor 131. The power signal terminal P does not supply power to the drive motor 131, so that it can respond to the user's first thrust to generate the first resistance (such as the above-mentioned Ampere force / Lorentz force), avoid the water tank assembly 11, the control panel 12 and the drive assembly 13 being forced to move backward due to human force, avoid the user manually resetting the water tank assembly 11 and the control panel 12, and ensure the safety of the process of taking and putting away the water tank while ensuring the service life of the cooking device, and avoid the user being hit by the control panel 12.

[0095] See also Figures 10-12 Optionally, both the first switching switch K1 and the second switching switch K2 are relays, and both the first control switch Q1 and the second control switch Q2 are transistors; the power signal terminal P includes a first power signal terminal P1 and a second power signal terminal P2; the first switching switch K1 also includes a first coil KA1, the first end of the first coil KA1 is electrically connected to the first power signal terminal P1, the second end of the first coil KA1 is electrically connected to the collector c of the first control switch Q1, the emitter e of the first control switch Q1 is grounded, and the base b of the first control switch Q1 is electrically connected to the first control signal terminal x; the second switching switch K2 also includes a second coil KA2, the first end of the second coil KA2 is electrically connected to the second power signal terminal P2, the second end of the second coil KA2 is electrically connected to the collector c of the second control switch Q2, the emitter e of the second control switch Q2 is grounded, and the base b of the second control switch Q2 is electrically connected to the second control signal terminal y.

[0096] The first switching switch K1 and the second switching switch K2 are relays. By controlling the energization of the first coil KA1, the conduction path in the contact group of the first switching switch K1 can be adjusted. Similarly, by controlling the energization of the second coil KA2, the conduction path in the contact group of the second switching switch K2 can be adjusted.

[0097] Furthermore, since the first coil KA1 and the first control switch Q1 are connected in series between the power signal terminal P and the ground signal terminal G, the controller 141 can control the on / off state of the first control switch Q1 by controlling the output signal of the first control signal terminal x, thereby controlling the energization of the first coil KA1. Similarly, since the second coil KA2 and the second control switch Q2 are connected in series between the power signal terminal P and the ground signal terminal G, the controller 141 can control the on / off state of the second control switch Q2 by controlling the output signal of the second control signal terminal y, thereby controlling the energization of the second coil KA2.

[0098] For example, refer to Figure 10 In the first process (pushing out process) (motor control circuit 142 is in the first sub-state), controller 141 sends an enable signal (e.g., a high-level signal) to the first control signal terminal x, and does not send an enable signal to the second control signal terminal y, thereby enabling the first control switch Q1 to conduct and the second control switch Q2 to turn off, which in turn enables the first coil KA1 to be energized, and the first contact i and the second contact g to be electrically connected. Since the second coil KA2 is not energized, the fourth contact j and the sixth contact n are electrically connected, and the current of the drive motor 131 flows from the first terminal a to the second terminal d, and it is energized and rotates (e.g., forward rotation), pushing out the water tank assembly 11 and the control panel 12, so that the control panel 12 exposes the water tank loading and unloading opening 1110.

[0099] For example, refer to Figure 11 In the second process (reset process) (motor control circuit 142 is in the second sub-state), the controller 141 does not send an enable signal to the first control signal terminal x, but sends an enable signal (e.g., a high-level signal) to the second control signal terminal y, thereby turning off the first control switch Q1 and turning on the second control switch Q2, which in turn energizes the second coil KA2, and the fourth contact j and the fifth contact m are electrically connected. Since the first coil KA1 is not energized, the first contact i and the third contact h are electrically connected, and the current of the drive motor 131 flows from the second terminal d to the first terminal a, energizing and rotating (e.g., reversing), retrieving and resetting the water tank assembly 11 and the control panel 12, exposing the water tank loading and unloading opening 1110 on the control panel 12.

[0100] For example, refer to Figure 12During the process of placing and removing water tanks, from the end of the first process to the start of the second process (when the motor control circuit 142 is in the second state), the controller 141 does not send enable signals to either the first control signal terminal x or the second control signal terminal y. Therefore, both the first control switch Q1 and the second control switch Q2 are turned off, and neither the first coil KA1 nor the second coil KA2 is energized. This results in the first contact i and the third contact h being electrically connected, and the fourth contact j and the sixth contact n being electrically connected. The first terminal a, the first contact i, the third contact h, the sixth contact n, the fourth contact j, and the second terminal d are connected in sequence and form a closed loop with the coil inside the drive motor 131. The power signal terminal P does not supply power to the drive motor 131. As explained above, during this process, if the user applies too much force when pushing or placing the water tank, causing the water tank cavity to move backward a small distance, it will be resisted by the Ampere force generated by the magnetic field in the drive motor on the coil, thus resisting the user's external force and keeping the water tank assembly 11 and the control panel 12 basically stationary. This ensures the service life of the cooking device, guarantees the safety of the process of removing and placing the water tank, and prevents the user from being hit by the control panel.

[0101] In addition, such as Figures 10-12 As shown, in this embodiment, the motor control circuit 142 includes two power signal terminals P, namely the first power signal terminal P1 and the second power signal terminal P2. The first coil KA1 and the second coil KA2 are electrically connected to the first power signal terminal P1 and the second power signal terminal P2, respectively. At this time, the first power signal terminal P1 and the second power signal terminal P2 are used to supply power to the first coil KA1 and the second coil KA2, respectively, to drive the motor to rotate forward and reverse. This arrangement allows the relay to be electrically connected to the nearest power signal terminal, which helps to reduce the wiring difficulty of the circuit board.

[0102] In addition, such as Figures 10-12 As shown, optionally, the second contact g and the fifth contact m are electrically connected, and both are electrically connected to the first power signal terminal P1. This arrangement reduces the number of cross-wires and simplifies the wiring of the circuit board. Of course, this arrangement is only illustrative and not limiting. For example, in other embodiments, the second contact g can also be electrically connected to the first power signal terminal P1, and the fifth contact m can be electrically connected to the second power signal terminal P2. In this way, when the drive motor rotates forward, it can be powered by the first power signal terminal P1, and when the drive motor rotates in reverse, it can be powered by the second power signal terminal P2.

[0103] Reference Figure 12Optionally, the motor control circuit 142 further includes a first diode D1 and a second diode D2; the cathode of the first diode D1 is electrically connected to the first power signal terminal P1, and the anode of the first diode D1 is electrically connected to the collector c of the first control switch Q1; the cathode of the second diode D2 is electrically connected to the second power signal terminal P2, and the anode of the second diode D2 is electrically connected to the collector c of the second control switch Q2. The arrangement of the first diode D1 and the second diode D2 can be used to protect the first control switch Q1 and the second control switch Q2 respectively, which helps to ensure the stability of circuit performance.

[0104] Reference Figure 12 Optionally, the motor control circuit 142 further includes a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4. The first resistor R1 is connected in series between the base b of the first control switch Q1 and the first control signal terminal x; the second resistor R2 is connected in series between the base b of the first control switch Q1 and the ground signal terminal G; the third resistor R3 is connected in series between the base b of the second control switch Q2 and the second control signal terminal y; and the fourth resistor R4 is connected in series between the base b of the second control switch Q2 and the ground signal terminal G. Specifically, the first resistor R1 and the third resistor R3 serve as current limiters, the second resistor R2 can be used to provide a bias voltage to the base b of the first control switch Q1, and the fourth resistor R4 can be used to provide a bias voltage to the base b of the second control switch Q2.

[0105] Reference Figure 12 Optionally, the motor control circuit 142 further includes a third diode D3 and a fourth diode D4; the anodes of both the third diode D3 and the fourth diode D4 are electrically connected to the ground signal terminal G; the cathode of the third diode D3 is electrically connected to the first terminal a, and the cathode of the fourth diode D4 is electrically connected to the second terminal d. The arrangement of the third diode D3 and the fourth diode D4 can protect the drive motor and help ensure the stability of the circuit performance.

[0106] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A cooking apparatus having a steaming function, the cooking apparatus comprising a water tank assembly, the water tank assembly comprising a water tank receiving cavity having a water tank opening for removal and placement; Its features are, The cooking device also includes: A resistance generating unit is used to generate a first resistance in response to a first thrust. The first resistance acts on the same object as the first thrust, but in the opposite direction, and the first resistance is greater than or equal to the first thrust. Wherein, the first thrust is the force applied to the water tank cavity when the user places the water tank into the water tank cavity; the first resistance is generated when the user pushes the water tank into the water tank cavity, and after the water tank is completely placed in the water tank cavity, the user continues to push the water tank inward.

2. The cooking apparatus according to claim 1, characterized in that, The cooking device also includes a control panel, which is linked to the water tank assembly. The state of the control panel switches between exposing the water tank opening and blocking the water tank opening.

3. The cooking apparatus according to claim 1 or 2, characterized in that, The cooking device also includes a drive motor for driving the water tank assembly to move; The drive motor is also reused as the resistance generating unit.

4. The cooking apparatus according to claim 3, characterized in that, The drive motor includes a first terminal and a second terminal; The cooking device also includes a controller and a motor control circuit, wherein the motor control circuit is electrically connected to the controller and the drive motor respectively; The motor control circuit includes a first state and a second state; the motor control circuit is used to electrically connect the drive motor to the power supply in the first state, and is also used to electrically connect the first terminal and the second terminal of the drive motor in the second state to form a closed loop, and there is no power supply in the closed loop; The controller is used to control the motor control circuit to switch between the first state and the second state.

5. The cooking apparatus according to claim 4, characterized in that, The motor control circuit includes a power signal terminal and a ground signal terminal; in the first state, one of the first terminal and the second terminal is electrically connected to the power signal terminal, and the other is electrically connected to the ground signal terminal.

6. The cooking apparatus according to claim 5, characterized in that, The motor control circuit further includes a first switching switch and a first control switch; the controller includes a first control signal terminal. The first control switch is electrically connected to the first control signal terminal and the first switching switch respectively; the first switching switch includes a first contact, a second contact and a third contact; the first contact is electrically connected to the first terminal. The second contact is electrically connected to the power signal terminal; the third contact is electrically connected to the second terminal and also electrically connected to the ground signal terminal. In the first state, the first control signal terminal has an enable signal, and the controller controls the first control switch to be turned on so that the first contact and the second contact are connected; In the second state, the first control signal terminal has no enable signal, the first control switch is off, and the first contact and the third contact are connected.

7. The cooking apparatus according to claim 5, characterized in that, The first state includes a first sub-state and a second sub-state; In the first sub-state, the first terminal is electrically connected to the power signal terminal, and the second terminal is electrically connected to the ground signal terminal; In the second sub-state, the second terminal is electrically connected to the power signal terminal, and the first terminal is electrically connected to the ground signal terminal.

8. The cooking apparatus according to claim 7, characterized in that, The motor control circuit further includes a first switching switch, a first control switch, a second switching switch, and a second control switch; the controller includes a first control signal terminal and a second control signal terminal. The first control switch is electrically connected to the first control signal terminal and the first switching switch, respectively; the second control switch is electrically connected to the second control signal terminal and the second switching switch, respectively; the first switching switch includes a first contact, a second contact, and a third contact; the second switching switch includes a fourth contact, a fifth contact, and a sixth contact; the first contact is electrically connected to the first terminal; the fourth contact is electrically connected to the second terminal; the second contact and the fifth contact are both electrically connected to the power signal terminal; the third contact and the sixth contact are electrically connected and also electrically connected to the ground signal terminal. In the first sub-state, the first control signal terminal has an enable signal, and the controller controls the first control switch to be turned on so that the first contact and the second contact are connected. At the same time, the second control signal terminal does not have the enable signal, the second control switch is turned off, and the fourth contact and the sixth contact are connected. In the second sub-state, the first control signal terminal has no enable signal, the first control switch is off, the first contact and the third contact are connected, and at the same time, the second control signal terminal has the enable signal, and the controller controls the second control switch to be connected so that the fourth contact and the fifth contact are connected. In the second state, neither the first control signal terminal nor the second control signal terminal has the enable signal, both the first control switch and the second control switch are turned off, the first contact and the third contact are connected, and the fourth contact and the sixth contact are connected.

9. The cooking apparatus according to claim 8, characterized in that, Both the first and second switching switches are relays, and both the first and second control switches are transistors; the power signal terminals include a first power signal terminal and a second power signal terminal. The first switching switch further includes a first coil, a first end of the first coil is electrically connected to the first power signal terminal, a second end of the first coil is electrically connected to the collector of the first control switch, the emitter of the first control switch is grounded, and the base of the first control switch is electrically connected to the first control signal terminal. The second switching switch further includes a second coil, a first end of which is electrically connected to the second power signal terminal, a second end of which is electrically connected to the collector of the second control switch, the emitter of the second control switch is grounded, and the base of the second control switch is electrically connected to the second control signal terminal.

10. The cooking apparatus according to claim 9, characterized in that, The second contact and the fifth contact are electrically connected, and both are electrically connected to the first power signal terminal.

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