Control circuit and cooking equipment

Abstract

The invention provides a control circuit and cooking equipment. The control circuit comprises a computer board MCU, a first pin of the computer board MCU is connected with a first interface, the first interface is connected with a first power supply, a first resistor is arranged between the first power supply and the first interface, and a second resistor is arranged between the first power supply and the first pin of the MCU; the control circuit further comprises a second interface used for being connected with an induction piece, the second interface is connected with the first interface in an inserted mode or in a butt joint mode, and the induction piece is a photoelectric sensor and used for detecting whether a motor driving the stirrer to rotate normally operates or not. According to the control circuit and the cooking equipment, stable work of the photoelectric sensor can be ensured, meanwhile, a switching signal of the photoelectric sensor is converted into a logic level capable of being recognized by the MCU, noise is restrained, and real-time monitoring of the motor can be achieved through cooperation of the photoelectric sensor and the MCU.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a control circuit and a cooking device. Background Art

[0002] As microwave ovens have become the core equipment for quickly heating food in modern households, their core principle relies on the high-frequency microwaves (usually 2.45GHz) generated by the magnetron to stimulate the violent vibration and friction of the molecules inside the food (especially water molecules), thereby achieving efficient heat energy conversion; in order to ensure that the microwaves entering the cavity are evenly dispersed, a motor-driven stirrer needs to be set up.

[0003] Since the microwave stirring mechanism is usually hidden, it is impossible to directly observe whether the stirrer is rotating normally during the cooking process; once the motor is damaged or other reasons cause the stirrer to stop rotating, the microwaves cannot be evenly dispersed, resulting in poor heating uniformity. In addition, microwave focused heating is prone to occur, resulting in heat concentration, which may cause damage to the flat panel focus and even fire, seriously affecting the user experience.

[0004] To this end, Chinese patent application number 201110435066.X discloses a detection device for a microwave stirring mechanism in a flat-plate microwave oven. The device comprises a detection mechanism for detecting whether the microwave stirring mechanism's motor is functioning properly; and an actuator connected to the detection mechanism's signal output terminal for promptly shutting off power to the microwave oven's electric heating element when the detection mechanism detects abnormal motor operation. This solution can promptly detect abnormal motor operation, improving safety. However, the mechanical contact method increases rotational resistance, resulting in high energy consumption due to the high motor power. Furthermore, the electromagnet is susceptible to demagnetization at high temperatures, affecting detection reliability, making it difficult to meet the requirements of microwave ovens.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The problem solved by the present invention is that the structure of the existing microwave stirring device is unreasonable and the reliability of detecting whether the stirrer is working properly is poor, especially for cooking equipment with dual magnetrons.

[0007] To solve the above problems, the present invention provides a control circuit for cooking equipment, wherein the control circuit includes a computer board MCU, a first pin of the computer board MCU is connected to a first interface, the first interface is connected to a first power supply, a first resistor is arranged between the first power supply and the first interface, and a second resistor is arranged between the first power supply and the first pin of the MCU; the control circuit also includes a second interface for connecting to a sensing component, the second interface is plugged or docked with the first interface; the sensing component is a photoelectric sensor, which is used to detect whether the motor that drives the agitator to rotate is operating normally.

[0008] Preferably, the second pin of the computer board MCU is connected to the third resistor, the other end of the third resistor is respectively connected to the base of the first transistor and the fourth resistor, the emitter of the first transistor and the other end of the fourth resistor are both grounded, and the collector of the first transistor is connected to the first interface.

[0009] Preferably, the second pin of the computer board MCU is connected to the fifth resistor, the other end of the fifth resistor is respectively connected to the base of the second transistor and the sixth resistor, the emitter of the second transistor and the other end of the sixth resistor are grounded, the collector of the second transistor is sequentially connected to the seventh resistor, the relay MOTOR, and the motor, one end of the relay MOTOR is connected to the second power supply, a first diode is arranged between the second power supply and the seventh resistor, and the relay MOTOR and the relay MOTOR are arranged in parallel.

[0010] Preferably, the motor is connected to a third interface, and the third interface is used to connect to a computer board MCU.

[0011] Preferably, the connecting rod is made of non-metallic heat-insulating material and an extension plate is provided on one side. The extension direction of the extension plate is perpendicular to the connecting rod. The extension plate can periodically pass through the sensing element and generate a signal.

[0012] The present invention also provides a cooking device, comprising the above-mentioned control circuit and a microwave stirring device, wherein the microwave stirring device comprises the motor, and the motor is connected to the stirrer through a connecting rod. The connecting rod is made of non-metallic heat-insulating material and an extension plate is provided on one side. The extension direction of the extension plate is perpendicular to the connecting rod, and the extension plate can periodically pass through the sensing element and generate a signal.

[0013] Preferably, the cooking device further includes a heating cavity, a first waveguide box, and a first magnetron, wherein the first waveguide box is used to introduce the microwaves generated by the first magnetron from the rear or bottom, and the first waveguide box is provided with the microwave stirring device.

[0014] Preferably, the cooking device further includes a second waveguide box and a second magnetron, the first waveguide box is used to introduce the microwaves generated by the first magnetron from the rear, the second waveguide box is used to introduce the microwaves generated by the second magnetron from the bottom, and the second waveguide box is provided with the microwave stirring device.

[0015] Preferably, the microwave stirring device includes a second bracket for fixing the motor, and a first bracket is provided on one side of the second bracket for mounting the induction component.

[0016] Preferably, the second bracket part protrudes toward the side close to the motor to form a first protrusion, and the first protrusion is provided with a first mounting hole. The cooking device includes a first waveguide box, and the first waveguide box part protrudes toward the side away from the motor to form a second protrusion, and a second mounting hole is provided on the second protrusion. The second mounting hole is arranged opposite to the first mounting hole, and an annular rib is provided on the outer edge of the second mounting hole, and the annular rib extends toward the side close to the motor. The connecting rod passes through the first mounting hole and the second mounting hole in sequence, and then is connected to the stirrer.

[0017] Preferably, the cooking device also includes a partition component, which is horizontally arranged in the heating cavity. The partition component can shield microwaves and is used to divide the heating cavity into a first space and a second space arranged up and down. The first magnetron and the second magnetron are used to selectively send microwaves to the first space and the second space, respectively.

[0018] Compared with the prior art, the cooking device described in the embodiment of the present invention has the following beneficial effects: 1) ensuring the stable operation of the photoelectric sensor, and at the same time converting the switching signal of the photoelectric sensor into a logic level recognizable by the MCU, and suppressing noise. The two work together to realize real-time monitoring of the motor; 2) effectively preventing the computer board MCU pin from overloading, and at the same time ensuring that the transistor base has an appropriate driving current, and controlling the on and off of the photoelectric sensor connected to the first interface through the first transistor. The three work together to enable the detection result of the photoelectric sensor to be able to be converted into a load action in real time and accurately, realizing the safe conversion of "low voltage control → high voltage drive"; 3) using the second transistor to convert the computer board MCU signal into the relay MOTOR driving capability, the sixth resistor set improves the circuit stability, prevents false triggering and accelerates shutdown, and the relay MOTOR can be used to isolate strong and weak electricity, while the first diode and the seventh resistor can suppress the back electromotive force and limit the coil current, thereby realizing precise control of the start and stop of the motor 31. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A control circuit diagram of the cooking device of the present invention;

[0020] Figure 2is an overall schematic diagram of the cooking device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic structural diagram of a cooking device according to an embodiment of the present invention;

[0022] Figure 4 for Figure 3 A partial enlarged schematic diagram of point A in the middle;

[0023] Figure 5 for Figure 2 Schematic diagram of the longitudinal section along the AA side;

[0024] Figure 6 for Figure 2 Schematic diagram of the longitudinal section along the BB side;

[0025] Figure 7 Schematic diagram of the structure of the connecting rod according to an embodiment of the present invention;

[0026] Figure 8 This is an overall schematic diagram of the partition assembly according to an embodiment of the present invention;

[0027] Figure 9 This is an exploded schematic diagram of a partition assembly according to an embodiment of the present invention;

[0028] Figure 10 Another perspective view of the partition assembly according to the embodiment of the present invention;

[0029] Figure 11 for Figure 10 Schematic diagram of the cross section along the AA side;

[0030] Figure 12 for Figure 10 Schematic diagram of the cross section along the BB side;

[0031] Figure 13 Schematic diagram of the structure of the partition according to an embodiment of the present invention;

[0032] Figure 14 This is a schematic structural diagram of the first protective element according to an embodiment of the present invention;

[0033] Figure 15 This is a schematic structural diagram of a position-limiting member according to an embodiment of the present invention;

[0034] Figure 16 This is another perspective view of the limiting member described in an embodiment of the present invention.

[0035] Description of reference numerals:

[0036] 1-heating chamber; 2-insulation frame assembly; 3-microwave stirring device; 31-motor; 32-connecting rod; 321-first connecting portion; 322-second connecting portion; 323-extension plate; 324-first plug hole; 33-stirrer; 34-first bracket; 35-induction member; 36-second bracket; 361-first protrusion; 37-coupler; 38-connecting sleeve; 4-first waveguide box; 41-second protrusion; 411-annular rib; 5-first magnetron; 6-second waveguide box; 7-second magnetron; 8-base; 9-partition assembly; 91-partition plate; 911-bottom plate; 9111-stop block; 9112-first guide rib; 9113-second limit block; 9114-third limit Block; 9115-protrusion; 9116-yield portion; 9117-recessed portion; 912-first enclosure; 9121-avoidance; 913-second enclosure; 92-first protective member; 921-avoidance hole; 922-second guide rib; 923-matching portion; 924-limiting plate; 925-slot; 93-second protective member; 94-water box assembly; 941-connector; 9411-limiting hole; 942-water storage box; 95-limiting member; 951-clip; 9511-first connecting plate; 9512-second connecting plate; 9513-hook; 952-abutment block; 953-reinforcement rib; 954-reinforcement block; 955-connecting block; 956-main body; 10-door assembly; 11-housing. DETAILED DESCRIPTION

[0037] To make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is made in conjunction with the accompanying drawings. The technical features of the embodiments of the present invention can be combined with each other without conflict.

[0038] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0039] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0040] Example 1

[0041] A control circuit for cooking equipment, the control circuit includes a computer board MCU, a first pin of the computer board MCU is connected to a first interface, the first interface is connected to a first power supply, a first resistor is set between the first power supply and the first interface, and a second resistor is set between the first power supply and the first pin of the MCU; the control circuit also includes a second interface for electrically connecting to a sensing element 35, the second interface is plugged or docked with the first interface, and the sensing element 35 is a photoelectric sensor for detecting whether the motor 31 that drives the agitator 33 to rotate is operating normally.

[0042] This application ensures the stable operation of the photoelectric sensor by setting the second resistor, providing a reliable light source for detection; at the same time, the first resistor set can convert the switching signal of the photoelectric sensor into a logic level recognizable by the MCU and suppress noise. The combination of the two can realize real-time monitoring of the motor 31 that drives the agitator 33, forming the hardware basis of the "stop when no signal" protection logic.

[0043] As an example of the present invention, the first pin is pin 11, the first interface and the second interface are interface CN20 and interface CN2 respectively, the first resistor is resistor R122 with a resistance of 150Ω, the second resistor is resistor R121 with a resistance of 20K, and the first power supply is 5V.

[0044] Preferably, the second pin of the computer board MCU is connected to the third resistor, the other end of the third resistor is respectively connected to the base of the first transistor and the fourth resistor, the emitter of the first transistor and the other end of the fourth resistor are both grounded, and the collector of the first transistor is connected to the first interface.

[0045] This setting uses the third resistor to limit current and prevent overload of the MCU pin, while ensuring that the transistor base has appropriate drive current. The first transistor is used as a switch. When the MCU outputs a high level, the base obtains sufficient current to turn on the first transistor, allowing the collector current to flow to the emitter (ground). At this time, the collector voltage is close to the ground potential. When the MCU outputs a low level, the first transistor is cut off and the collector voltage is close to the power supply voltage. This switching action controls the on and off of external devices connected to CN20, such as photoelectric sensors. The three work together to enable the detection results of the photoelectric sensor to be converted into load actions in real time and accurately, realizing a safe conversion from "low-voltage control to high-voltage drive".

[0046] As an example of the present invention, the third resistor and the fourth resistor are resistor 82 and resistor 84 respectively, with corresponding resistance values of 4.7K and 10K, and the second pin is pin 35.

[0047] Preferably, the second pin of the computer board MCU is connected to the fifth resistor, the other end of the fifth resistor is respectively connected to the base of the second transistor and the sixth resistor, the emitter of the second transistor and the other end of the sixth resistor are grounded, the collector of the second transistor is sequentially connected to the seventh resistor, the relay MOTOR, and the motor 31, one end of the relay MOTOR is connected to the second power supply, a first diode is arranged between the second power supply and the seventh resistor, and the relay MOTOR and the relay MOTOR are arranged in parallel.

[0048] The fifth resistor can protect the computer board MCU and adapt the driving current to ensure that the second transistor is reliably turned on. The second transistor, as a power switch, can convert the computer board MCU signal into the relay MOTOR driving capability. The sixth resistor can improve the circuit stability, prevent false triggering and accelerate shutdown. The relay MOTOR can be used to isolate strong and weak electricity, and the first diode and the seventh resistor can suppress the back electromotive force and limit the coil current. Through the cooperation of the above components, the start and stop of the motor 31 can be accurately controlled, and multiple hardware protections can be provided.

[0049] As an example of the present invention, the fifth resistor, the sixth resistor, and the seventh resistor are resistor R126, resistor R125, and resistor R6, respectively, and their corresponding resistance values are 4.7K, 10K, and 15Ω, respectively. The first transistor and the second transistor are transistor Q20 and transistor Q6, respectively, and the first diode is diode D10.

[0050] Specifically, when the microwave oven is started, the second pin of the computer board MCU outputs a high-level signal. At this time, the current path is: computer board MCU pin → sixth resistor → second transistor base → Q6 emitter. At this time, the collector and emitter paths are closed, and the coil of the relay MOTOR is energized to close the contacts, thereby starting the motor 31; and when the MCU does not detect the pulse feedback from the photoelectric sensor (EE-SX1070), the second pin is immediately set to a low level. At this time, the collector-emitter circuit is broken, the coil of the relay MOTOR loses power, and the contacts are disconnected, thereby stopping the motor 31.

[0051] Preferably, the motor 31 is connected to a third interface, which is used to connect to the computer board MCU. This configuration enables interaction between the motor 31 and the computer board MCU through the third interface, assuming key functions such as issuing control instructions, status feedback, power management, and system protection. As an example of the present invention, the third interface is interface CN9.

[0052] During operation, the control circuit described in this application energizes the motor 31, thereby driving the connecting rod 32 to rotate synchronously and periodically pass through the sensor 35. The sensor 35 generates a signal and transmits it to the computer board MCU via the first pin, maintaining normal operation of the entire device. If the computer board MCU does not receive the signal, the corresponding error code is displayed and the entire device stops operating. Specifically, when the cooking device starts working, a high level is output via the second pin, at which point the relay MOTOR is energized, activating the motor 31. The EE-SX1070 photoelectric sensor detects whether the motor 31 is rotating and feeds back any level changes to the computer board MCU via the first pin to determine whether a fault exists. If no level change occurs, the system is determined to be faulty.

[0053] Example 2

[0054] like Figure 2-7 As shown, a cooking device includes the above-mentioned control circuit, and also includes a magnetron assembly, a waveguide assembly and a microwave stirring device 3. The waveguide assembly is used to guide the microwaves generated by the magnetron assembly into the heating cavity 1 to cook food. The microwave stirring device 3 is arranged on the waveguide assembly and includes a motor 31. The motor 31 is connected to the stirrer 33 through a connecting rod 32 for driving the rotation of the stirrer 33; the microwave stirring device 3 also includes an induction member 35 electrically connected to the control module, the induction member 35 is located on the side of the connecting rod 32 and does not contact the connecting rod 32. The connecting rod 32 is provided with an extension plate 323, and the extension plate 323 rotates synchronously with the connecting rod 32 and generates a signal when passing through the induction member 35.

[0055] This arrangement, through the cooperation of the sensing element 35 and the extension plate 323, can monitor in real time whether the microwave stirring device 3 is operating normally, thus avoiding safety hazards caused by abnormal operation of the microwave stirring device 3. In addition, there is no physical contact between the sensing element 35 and the extension plate 323, which avoids contact oxidation or elastic failure caused by friction in traditional micro switches, extending the service life to more than 100,000 times. By installing the sensing element 35 sideways, it does not occupy the axial space of the connecting rod 32, making the structure more compact. Preferably, the sensing element 35 is a magnetic sensor.

[0056] Preferably, the connecting rod 32 is made of a non-metallic heat-insulating material. This configuration can make the motor 31 less susceptible to high temperatures during operation through the heat insulation effect of the connecting rod 32, thereby reducing heat loss and overheating risks, improving the operating efficiency and service life of the motor 31, ensuring the smooth rotation of the stirrer 33, and further ensuring more uniform distribution of microwaves within the microwave oven cavity.

[0057] As an example of this new use, the microwave stirring device 3 includes a second bracket 36 fixed to the waveguide assembly for fixing the motor 31. A first bracket 34 is provided on one side of the second bracket 36, and the first bracket 34 is fixedly provided with the sensing element 35, which is a Hall element or an infrared photoelectric sensor. This setting prevents the vibration of the motor 31 from being directly transmitted to the sensing element 35 by independently installing the second bracket 36 and the first bracket 34, thereby improving the stability of the detection signal; by providing the second bracket 36, the sensing element 35 can be shielded from the heating chamber 1, further improving the operational stability and reliability. Preferably, the first bracket 34 is made of galvanized steel plate or aluminum alloy to form a Faraday cage effect, reducing the interference of the Hall element with the magnetron radiation by 90%.

[0058] Preferably, the second bracket 36 partially protrudes toward the side close to the motor 31 to form a first protrusion 361, and the first protrusion 361 is provided with a first mounting hole. The waveguide assembly includes a first waveguide box 4, and the first waveguide box 4 partially protrudes toward the side away from the motor 31 to form a second protrusion 41. A second mounting hole is provided on the second protrusion 41, and the second mounting hole is arranged opposite to the first mounting hole. An annular rib 411 is provided on the outer edge of the second mounting hole, and the annular rib 411 extends toward the side close to the motor 31. The connecting rod 32 passes through the first mounting hole and the second mounting hole in sequence, and then is connected to the agitator 33.

[0059] This arrangement forms a cavity between the first protrusion 361 and the second protrusion 41, which can effectively prevent microwaves leaking from the first mounting hole from being conducted outward. The annular rib 411 and the connecting rod 32 form a closed conductive loop, which limits microwave leakage to the first waveguide box 4, further reducing the microwave leakage to below 0.3mW / cm², effectively reducing the impact of microwave oven leakage on the normal operation of the induction element 35.

[0060] As an example of the present invention, a connector 37 is provided at the end of the heat-insulating connecting rod 32 away from the motor 31. The connector 37 is plugged and fixed with the agitator 33. A connecting sleeve 38 is provided on the outside of the connector 37. The connector 37 can rotate relative to the connecting sleeve 38 under the driving action of the connecting rod 32. The connecting sleeve 38 is fixed on the heating chamber 1 and can support the agitator 33.

[0061] This setting ensures a firm connection between the coupler 37 and the stirrer 33 by plugging them together, preventing the stirrer 33 from loosening or falling off during operation; at the same time, the connecting sleeve 38 is fixed to the bottom wall or side wall of the heating cavity 1, providing stable support for the stirrer 33, enhancing its stability during operation, and allowing the stirrer 33 to rotate flexibly driven by the connecting rod 32, which helps to evenly distribute microwaves in the microwave oven cavity and improve the heating effect.

[0062] As an example of the present invention, the connecting rod 32 includes a first connecting portion 321, a first insertion hole 324 being provided on one side thereof for connection to the rotating shaft of the motor 31; and a second connecting portion 322 capable of extending into the coupling 37 and driving the coupling 37 for integral rotation. This arrangement allows for the integrated rotation of the connecting rod 32 and the agitator 33, ensuring efficient power transmission, thereby simplifying the assembly process and improving the overall structural stability and rotational efficiency.

[0063] As an example of the present invention, the connecting sleeve 38 includes a sleeve plate, on which a third limiting flange is arranged, and the third limiting flange is used to accommodate the limiting connector 37 and support the agitator 33. A first connecting plate and a first plug-in block are respectively arranged on opposite sides of the sleeve plate, and the first plug-in block is plugged into and positioned with the heating chamber 1, and the first connecting plate is fixed with screws to the heating chamber 1.

[0064] This setting ensures the stable positioning of the connector 37 and supports the agitator 33 through the cleverly designed third limiting flange, thereby improving the stability of the overall structure; at the same time, the screw fixation and plug-in positioning design of the connecting sleeve 38 and the heating chamber 1 simplifies the installation process and realizes fast and accurate assembly; in addition, the setting of the anti-fool plate and the first plug-in block effectively prevents installation errors and further ensures the stable installation of the connecting sleeve 38, thereby realizing an efficient and stable connection between the agitator 33, the connector 37 and the connecting sleeve 38.

[0065] Preferably, a fifth connecting hole is provided on the first connecting plate, and the first connecting plate is fixed to the heating chamber 1 by means of connecting screws passing through the fifth connecting hole. An anti-foolproof plate is provided on the side of the sleeve plate away from the first connecting plate, and the first plug-in block is provided on the lower surface of the first connecting plate and extends out of the anti-foolproof plate, thereby realizing quick plug-in positioning when the connecting sleeve 38 and the heating chamber 1 are installed.

[0066] The present invention also provides a cooking device, including a heating cavity 1, the magnetron assembly including a first magnetron 5 located at the bottom of the heating cavity 1, the waveguide assembly including a first waveguide box 4, the first magnetron 5 introduces microwaves from the rear side of the heating cavity 1 through the first waveguide box 4, and the above-mentioned microwave stirring device 3 is provided on the first waveguide box 4.

[0067] Preferably, the magnetron assembly further includes a second magnetron 7 located at the bottom of the heating cavity 1, and the waveguide assembly further includes a second waveguide box 6, the second magnetron 7 introduces microwaves from the bottom of the heating cavity 1 through the second waveguide box 6, and the above-mentioned microwave stirring device 3 is provided on the second waveguide box 6.

[0068] Preferably, a heat insulating frame assembly 2 is provided on the periphery of the heating chamber 1, a heat insulating member is provided between the heating chamber 1 and the heat insulating frame assembly 2, the heat insulating member is snap-fitted and assembled with the heat insulating frame assembly 2, and the heat insulating frame assembly 2 is connected to the heating chamber 1. The material of the heat insulating member 20 can be conventional heat insulating cotton or other conventional heat insulating materials, and this application does not impose any specific restrictions thereon.

[0069] This arrangement can effectively prevent the heat in the heating chamber 1 from being transferred to the outside. On the one hand, it provides a heat-insulating and heat-resisting effect, preventing the heat in the heating chamber 1 from being transferred to electrical components such as the first magnetron 5 and the second magnetron 7, thereby reducing the heat dissipation load of the electrical components. On the other hand, it can effectively concentrate heat in the heating chamber 1, ensuring a good temperature rise rate in the chamber, and being able to reach the required cooking temperature (such as the extremely high temperature cooking requirement under the grilling function) relatively quickly, which helps to improve cooking efficiency and ensure cooking results. It also reduces the energy loss and energy waste caused by heat transfer from the furnace chamber to the outside, and can effectively reduce the consumption of electrical energy under the same cooking conditions. Preferably, the cooking device also includes a heating component, which is located at the top and bottom of the heating chamber. This arrangement enables the cooking device to realize microwave and grilling functions, and can meet the diverse needs of users.

[0070] Example 3

[0071] like Figure 8-16 As shown, the cooking device also includes a partition component 9, which is horizontally arranged in the heating cavity 1. The partition component 9 can shield microwaves and is used to divide the heating cavity 1 into a first space and a second space arranged up and down. The first magnetron 5 and the second magnetron 7 are used to selectively send microwaves to the first space and the second space respectively.

[0072] This setting allows for selective heating of the first and / or second chambers, avoiding heating the entire heating chamber 1 when food is low, significantly reducing energy consumption. This is particularly suitable for regions with stringent requirements for low power and high energy efficiency. It reduces the annual power consumption of the entire appliance (tested according to JISC9801) by 20%-40%, easily meeting Level 4 energy efficiency standards. It also allows for a variety of operating modes, such as using the first chamber for defrosting while heating the second chamber without interfering with each other, or using either the first or second chamber to heat food, further reducing energy consumption.

[0073] The partition assembly 9 includes a partition 91, a first protective member 92, and a limiting member 95. The first protective member 92 is plugged into and assembled with the side of the partition 91. The first protective member 92 is provided with an avoidance hole 921. The partition 91 is provided with a stop block 9111 at a position corresponding to the avoidance hole 921. After the first protective member 92 is assembled with the partition 91, the limiting member 95 partially passes through the avoidance hole 921 and is limitedly assembled with the stop block 9111. This setting can lock the first protective member 92 after plugging and assembling through the limiting member 95, thereby preventing the first protective member 92 from falling out of the side of the partition 91, and the assembly is secure and tight. As an example of the present invention, a limiting plate 924 is provided on the outer edge of the first protective member 92, and a slot 925 is formed between the limiting plate 924 and the first protective member 92. This setting can achieve full coverage of the side of the bottom plate 911.

[0074] Preferably, the partition 91 is provided with a first guide rib 9112, and the first guard 92 is provided with a second guide rib 922, with one side of the first guide rib 9112 abutting against one side of the second guide rib 922. This arrangement utilizes the second guide rib 922 to reinforce the first guard 92, while also constraining the sliding direction of the first guard 92 through the cooperation between the first guide rib 9112 and the second guide rib 922, resulting in high assembly precision.

[0075] As an example of the present invention, the partition assembly 9 also includes a second protective member 93, and the first protective member 92 and the second protective member 93 are respectively located on the left and right sides of the partition 91. This setting can realize the edging of both sides of the partition 91, thereby preventing the occurrence of ignition during the use of the partition assembly 9. At the same time, it can also prevent the user from directly touching the high-temperature conductive partition 91 after cooking, making it easier for the user to grasp. The assembly method of the second protective member 93 is the same as that of the first protective member 92 and will not be repeated here. Preferably, the material of the first protective member 92 and the second protective member 93 is plastic.

[0076] As an example of the present invention, the partition 91 includes a base plate 911, a first enclosure 912, and a second enclosure 913. The first enclosure 912 and the second enclosure 913 are located on either side of the base plate 911, respectively. The first protective member 92 and the second protective member 93 abut against the first enclosure 912 or the second enclosure 913, respectively. This arrangement can constrain the assembly position of the first and second protective members 92, 93, while further increasing the mechanical strength of the partition 91. Preferably, a relief opening 9121 is provided on one side of the first enclosure 912 to provide a relief for the temperature detection module in the first space, thereby enabling detection of the food temperature in the second space.

[0077] As an example of the present invention, the partition assembly 9 also includes a water box assembly 94, which includes a long strip-shaped connector 941 and a water storage box 942. The water storage box 942 is located above the top of the connector 941. The rear portion of the bottom plate 911 is recessed downward to form a recessed portion 9117. One side of the connector 941 is open for plugging and assembly with the recessed portion 9117. This arrangement enables rapid assembly and disassembly of the water box assembly 94 and the partition 91, making it convenient for users to quickly remove the water storage box 942 for cleaning. At the same time, the water box assembly 94 does not protrude from the first and second enclosures 912 and 913, nor does it occupy additional space, making the overall structure more compact.

[0078] As an example of the present invention, a limiting hole 9411 is provided on the connector 941, and a second limiting block 9113 is provided on the base plate 911 at a position corresponding to the limiting hole 9411. The second limiting block 9113 can be fixedly assembled into the limiting hole 9411. This arrangement can limit the connector 941 to prevent it from falling out of the base plate 911, thereby improving the tightness of the assembly.

[0079] Preferably, there are two limiting holes 9411 spaced apart along the length of the connector 941. This arrangement creates a multi-point constraint, effectively dispersing the assembly stress between the connector 941 and the base plate 911. When the second limiting block 9113 is simultaneously engaged with both limiting holes 9411, the possibility of lateral displacement or rotation of the connector 941 is significantly reduced, while effectively preventing local deformation caused by temperature changes or mechanical vibration during long-term use of the microwave oven.

[0080] As an example of the present invention, a third stopper 9114 is provided on the base plate 911. The second and third stopper blocks 9113 and 9114 are located on either side of the base plate 911. The connector 941 is partially recessed to form a mating groove, and the third stopper 9114 is positioned within the groove. This arrangement guides the insertion and assembly of the connector 941 and the base plate 911, providing pre-positioning and guidance, and improving assembly efficiency.

[0081] As an example of the present invention, the bottom plate 911 partially protrudes upward to form a clearance portion 9116. The clearance portion 9116 and the recessed portion 9117 are located on the front and rear sides of the bottom plate 911, respectively. This arrangement allows the front portion of the partition 91 to protrude upward, facilitating the removal and placement of food in the second space. Furthermore, the clearance portion 9116, formed through a stamping process, can increase the compressive strength of the bottom plate 911 by over 30%.

[0082] Preferably, the bottom plate 911 is provided with raised portions 9115, which are located on both sides of the retracting portion 9116. The first protective member 92 is provided with a mating portion 923, one of the raised portions 9115 being positionally fitted into the mating portion 923, with the lower wall of the mating portion 923 being at the same height as the lower wall of the water box assembly 94. This arrangement enables the front and rear sides of the partition assembly 9 to be aligned, allowing the partition assembly 9 to be stably placed after being removed from the heating chamber 1, thus providing support.

[0083] As an example of the present invention, the limiting member 95 includes a main body 956, a buckle 951 is provided on one side of the main body 956, a connecting block 955 is provided on the other side of the main body 956, and an abutment block 952 is provided at one end of the connecting block 955 away from the main body 956. The buckle 951 and the connecting block 955 are located on the same side of the main body 956, and the abutment block 952 protrudes toward the side away from the buckle 951. This arrangement enables the main body 956 of the limiting member 95 to form a limiting space with the connecting block 955 and the snap hook 951 for accommodating the stop block 9111 on the bottom plate 911. At the same time, the connecting block 955 cooperates with the abutment block 952 to form a step structure so as to overlap with the edge of the avoidance hole 921, while the other side is snapped with the edge of the avoidance hole 921 through the snap hook 951, thereby interfering with the horizontal sliding insertion of the first protective member 92 to prevent it from falling off the bottom plate 911; at the same time, the main body 956 can block the avoidance hole 921, so that the outer surface of the entire partition component 9 remains flat and the appearance is more beautiful.

[0084] Preferably, the buckle 951 includes a first connecting plate 9511 and a second connecting plate 9512 connected to each other. The first connecting plate 9511 is horizontally arranged and there is a gap between the two sides and the main body 956. The second connecting plate 9512 extends toward the side away from the connecting block 955 and is tilted upward. A hook 9513 is set at the free end of the second connecting plate 9512.

[0085] This setting allows the buckle 951 to produce slight elastic bending when subjected to vertical force, such as during plugging and unplugging operations, absorbing 30%-40% of the assembly impact force; and the inclined extension of the second connecting plate 9512 changes the force direction from vertical impact to oblique shear, avoiding breakage caused by concentrated load; in addition, the inclination angle of the second connecting plate 9512 generates a rebound force, so that the hook 9513 fits tightly against the side wall of the avoidance hole 921, suppressing loosening caused by horizontal vibration.

[0086] Preferably, the main body 956 is provided with a reinforcing rib 953 on one side near the connecting block 955, and the reinforcing rib 953 abuts the side of the stop block 9111. This arrangement is assembled into the avoidance hole 921 of the first protective member 92 via the limiting member 95. The reinforcing rib 953 abuts against one side of the stop block 9111, thereby preventing the first protective member 92 from escaping from the side of the partition 91. Preferably, there are two reinforcing ribs 953, one located on each side of the buckle 951, and the other two abutting against the reinforcing ribs 953. This arrangement can strengthen the limiting member 95, extending its service life, and can also protect the stop block 9111.

[0087] Preferably, the body 956 is provided with a reinforcement block 954 on a side away from the connecting block 955, and there are two reinforcement blocks 954, one on each side of the buckle 951. This arrangement can constrain the motion trajectory of the buckle 951 and strengthen the position limiting member 95, thereby extending the service life.

[0088] During assembly, first, the first protective member 92 is plugged and assembled to one side of the partition 91, and then the limiting member 95 is inserted from the avoidance hole 921 so that one side thereof abuts against the bottom plate 911 connected to the avoidance hole 921, and the other side is clamped with the avoidance hole 921, thereby interfering with the movement of the stop block 9111 and preventing the first protective member 92 from falling off from the partition 91; the assembly action of the second protective member 93 is the same as that of the first protective member 92; then the water box assembly 94 is pushed forward horizontally from the rear side of the partition 91, so that the limiting hole 9411 of the connector 941 is limitedly assembled with the second limiting block 9113.

[0089] In the present invention, any cooking device, such as a microwave oven, a steam oven, etc., can employ the technical content described in this embodiment. Based on the relevant structures and assembly relationships provided in this application, the cooking device also includes conventional components such as a base 8, a door assembly 10, and a housing 11. Since these conventional components can all be made using existing technologies, they will not be described in detail here.

[0090] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A control circuit for cooking equipment, comprising a computer board MCU, characterized in that: The first pin of the computer board MCU is connected to a first interface, the first interface is connected to a first power supply, a first resistor is set between the first power supply and the first interface, and a second resistor is set between the first power supply and the first pin of the MCU; the control circuit also includes a second interface for connecting to a sensing element (35), the second interface is plugged or docked with the first interface, and the sensing element (35) is a photoelectric sensor for detecting whether the motor (31) that drives the agitator (33) to rotate is operating normally.

2. The control circuit according to claim 1, wherein: The second pin of the computer board MCU is connected to the third resistor, the other end of the third resistor is respectively connected to the base of the first transistor and the fourth resistor, the emitter of the first transistor and the other end of the fourth resistor are both grounded, and the collector of the first transistor is connected to the first interface.

3. The control circuit according to claim 2, characterized in that: The second pin of the computer board MCU is connected to the fifth resistor, the other end of the fifth resistor is respectively connected to the base of the second transistor and the sixth resistor, the emitter of the second transistor and the other end of the sixth resistor are both grounded, the collector of the second transistor is sequentially connected to the seventh resistor, the relay MOTOR, and the motor (31), one end of the relay MOTOR is connected to the second power supply, a first diode is set between the second power supply and the seventh resistor, and the relay MOTOR is set in parallel with the relay MOTOR.

4. The control circuit according to claim 1, wherein: The motor (31) is connected to a third interface, and the third interface is used to be connected to a computer board MCU.

5. A cooking device, characterized in that: The invention comprises the control circuit according to any one of claims 1 to 4, and further comprises a microwave stirring device (3), wherein the microwave stirring device (3) comprises the motor (31), the motor (31) is connected to the stirrer (33) by a connecting rod (32), the connecting rod (32) is made of a non-metallic heat-insulating material and an extension plate (323) is provided on one side, the extension direction of the extension plate (323) is perpendicular to the connection rod, and the extension plate (323) can periodically pass through the induction element (35) and generate a signal.

6. The cooking device according to claim 5, characterized in that The cooking device further comprises a heating cavity (1), a first waveguide box (4), and a first magnetron (5); the first waveguide box (4) is used to introduce microwaves generated by the first magnetron (5) from the rear or bottom; the first waveguide box (4) is provided with the microwave stirring device (3).

7. The cooking device according to claim 5, characterized in that The cooking device further comprises a second waveguide box (6) and a second magnetron (7); the first waveguide box (4) is used to introduce the microwaves generated by the first magnetron (5) from the rear; the second waveguide box (6) is used to introduce the microwaves generated by the second magnetron (7) from the bottom; and the second waveguide box (6) is provided with the microwave stirring device (3).

8. The cooking device according to claim 7, characterized in that The microwave stirring device (3) comprises a second bracket (36) for fixing the motor (31), and a first bracket (34) is provided on one side of the second bracket (36) for mounting the induction component (35).

9. The cooking device according to claim 8, characterized in that The second bracket (36) partially protrudes toward the side close to the motor (31) to form a first protrusion (361), and the first protrusion (361) is provided with a first mounting hole. The cooking device includes a first waveguide box (4), and the first waveguide box (4) partially protrudes toward the side away from the motor (31) to form a second protrusion (41). A second mounting hole is provided on the second protrusion (41), and the second mounting hole is arranged opposite to the first mounting hole. An annular rib (411) is provided on the outer edge of the second mounting hole, and the annular rib (411) extends toward the side close to the motor (31). The connecting rod (32) passes through the first mounting hole and the second mounting hole in sequence, and is then connected to the stirrer (33).

10. The cooking device according to claim 9, characterized in that The cooking device further comprises a partition component (9), the partition component (9) being horizontally arranged in the heating cavity (1), the partition component (9) being capable of shielding microwaves and being used to separate the heating cavity (1) into a first space and a second space arranged in an upper and lower manner, the first magnetron (5) and the second magnetron (7) being used to selectively transmit microwaves into the first space and the second space, respectively.

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