Food processor circuit and food processor

Abstract

The embodiment of the application discloses a food processor circuit and a food processor. The food processor circuit comprises a first load, a low-voltage side circuit, a high-voltage side circuit, a detection circuit and a controller. The first end of the low-voltage side circuit is used for connecting low-voltage power. The second end of the low-voltage side circuit is connected with the first end of the first load, and the low-voltage side circuit comprises a silicon controlled switch device. The high-voltage side circuit comprises a micro switch. The first end of the micro switch is used for connecting high-voltage power. The second end of the micro switch is connected with the second end of the first load. The detection circuit is connected with the second end of the micro switch. The controller is connected with the detection circuit and is used for judging the on-off state of the micro switch according to the detection signal output by the detection circuit. When the cup cover is not covered on the opening, the high-voltage side circuit cannot supply power to the first load, thereby reducing the probability of food flying out of the opening and providing reliable protection for the operation safety of the user.

Description

Technical Field

[0001] This application relates to the field of food processor technology, and more specifically, to a food processor circuit and a food processor. Background Technology

[0002] As people's living standards continue to improve, many different types of food processors have appeared on the market. The functions of food processors can include, but are not limited to, making soy milk, juicing, rice paste, mincing meat, shaved ice, making coffee, and / or preparing face masks.

[0003] During operation, the blades inside the food processor rotate to cut or blend ingredients. If the lid is opened while the food processor is running, the blades will continue to rotate at high speed and process the ingredients. Alternatively, if the lid is not closed and the blades start rotating, the ingredients can easily fly out of the opening due to the lid not sealing the opening, potentially causing a safety hazard. Utility Model Content

[0004] This application provides a food processor circuit designed to detect whether the lid is covering the opening using a microswitch. This reduces the probability of electronic component failure and improves the stability of the lid's movement. When the lid is not covering the opening, the high-voltage side circuit cannot supply power to the first load, preventing the first load from working or causing it to deactivate. This reduces the probability of food flying out of the opening and provides reliable protection for the user's operational safety.

[0005] This application provides a food processor circuit, including a first load, a low-voltage side circuit, a high-voltage side circuit, a detection circuit, and a controller. The first terminal of the low-voltage side circuit is connected to low-voltage electricity, and the second terminal of the low-voltage side circuit is connected to the first terminal of the first load. The low-voltage side circuit includes a silicon controlled rectifier (SCR) switch. The high-voltage side circuit includes a microswitch, the first terminal of which is connected to high-voltage electricity, and the second terminal of which is connected to the second terminal of the first load. The detection circuit is connected to the second terminal of the microswitch. The controller is connected to the detection circuit and is used to determine the on / off state of the microswitch based on the detection signal output by the detection circuit.

[0006] Based on the above embodiments, when the lid is closed in the opening, the microswitch is in the ON state. At this time, the high-voltage side circuit can be connected to the first load through the microswitch, so that the high-voltage side circuit and the low-voltage side circuit can supply power to the first load, enabling the first load to work according to the control signal issued by the controller. When the lid is not closed in the opening, the microswitch is in the OFF state. At this time, the high-voltage side circuit is disconnected from the first load, so that the first load is de-energized. Compared with using Hall effect elements and reed switches to detect whether the lid is closed in the opening, in this embodiment, using a microswitch to detect whether the lid is closed in the opening can reduce the probability of electronic component failure, improve the stability of the microswitch as the lid moves, and thus prevent the high-voltage side circuit from supplying power to the first load when the lid is not closed in the opening, so that the first load cannot work or is deactivated from the working state, thereby reducing the probability of food flying out of the opening and providing reliable protection for the user's operation safety.

[0007] Furthermore, the detection circuit can output a corresponding detection signal based on the on / off state of the micro switch. The controller is also connected to the low-voltage side circuit so that the controller can determine the on / off state of the micro switch through the corresponding detection signal. When the controller determines that the micro switch is in the off state, the controller can control the low-voltage side circuit to stop supplying power to the first load, thereby reducing power consumption and achieving the purpose of saving power.

[0008] In some embodiments, the detection circuit includes a signal processing circuit and a switching circuit. The input terminal of the signal processing circuit is connected to the second terminal of the micro switch. The input terminal of the switching circuit is used to connect to a power supply. The output terminal of the switching circuit is connected to a controller. The controlled terminal of the switching circuit is connected to the output terminal of the signal processing circuit.

[0009] Based on the above embodiments, the signal at the second end of the micro switch is processed by the signal processing circuit to facilitate the control of the switching circuit. Thus, when the micro switch changes between on and off states, the output of the switching circuit can output different detection signals, so that the controller can determine the on / off state of the micro switch based on the different detection signals.

[0010] In some embodiments, the switching circuit includes a first resistor and a first switching element. A first end of the first resistor is connected to a power supply, and a second end of the first resistor is connected to a controller. The input end of the first switching element is connected to the second end of the first resistor, the output end of the first switching element is grounded, and the controlled end of the first switching element is connected to the output end of a signal processing circuit.

[0011] Based on the above embodiments, when the micro switch is open, the low-voltage electricity from the low-voltage side circuit enters the controlled terminal of the first switching element through the signal processing circuit, which does not meet the conduction condition of the first switching element. At this time, the first switching element is in the open state, so that the power supply voltage enters the controller, and the controller receives a high-level detection signal. When the micro switch is on, the high-voltage electricity from the high-voltage side circuit enters the controlled terminal of the first switching element through the signal processing circuit, which enables the first switching element to conduct between its input and output terminals, and grounds the second terminal of the first resistor through the first switching element, so that the controller receives a low-level detection signal. Then, when the controller receives a high-level detection signal, it determines that the micro switch is in the open state, indicating that the cup lid is not covering the opening. At this time, the controller can control the low-voltage side circuit to stop supplying power to the first load, reducing power consumption and achieving the purpose of saving power. When the controller receives a low-level detection signal, it determines that the micro switch is in the on state, indicating that the cup lid is covering the opening. When the controller receives a start command, it can control the first load to work according to the preset program.

[0012] When the first switching element is turned on, the first resistor can act as a load to prevent the power supply from being directly connected to ground, thereby reducing the probability of power supply damage and enabling the power supply to have a longer service life, which in turn enables the food processor circuit to have a longer service life.

[0013] In some embodiments, the detection circuit further includes a current limiting circuit, the first end of which is connected to the second end of the first resistor, and the second end of which is connected to the controller.

[0014] Based on the above embodiments, the current limiting circuit can reduce the probability of a large current from the power supply entering the controller, reduce the probability of the large current burning out the controller, and thus reduce the probability of controller damage, thereby enabling the controller to have a longer service life, and thus enabling the food processor circuit to have a longer service life.

[0015] In some embodiments, the current limiting circuit includes a second resistor, a first end of which is connected to a second end of the first resistor, and the second end of the second resistor is connected to a controller.

[0016] Based on the above embodiments, the probability of a large current from the power supply entering the controller can be reduced by the second resistor, thereby reducing the probability of the controller being burned out by the large current and thus reducing the probability of controller damage. This allows the controller to have a longer service life, which in turn allows the food processor circuit to have a longer service life.

[0017] In some embodiments, the signal processing circuit includes a voltage divider circuit, a rectifier circuit, and a voltage regulator circuit. The voltage divider circuit and the rectifier circuit are connected in series between the second terminal of the micro switch and the controlled terminal of the switching circuit. The first terminal of the voltage regulator circuit is connected to the controlled terminal of the switching circuit, and the second terminal of the voltage regulator circuit is grounded.

[0018] Based on the above embodiments, the voltage divider circuit is used to divide the voltage entering the controlled terminal of the switching circuit, so as to reduce the probability of high voltage entering the controlled terminal of the switching circuit, thereby reducing the probability of damage to the switching circuit, so that the switching circuit can have a longer service life, and thus the food processor circuit can have a longer service life.

[0019] The rectifier circuit is used to rectify the voltage entering the controlled terminal of the switching circuit so that the voltage entering the controlled terminal of the switching circuit is a DC voltage.

[0020] The voltage regulator circuit is used to regulate the voltage entering the controlled terminal of the switching circuit, so as to reduce the voltage fluctuation of the controlled terminal of the switching circuit, thereby enabling the switching circuit to remain in the on state or in the off state. This allows the controller to stably receive low-level or high-level detection signals, thereby improving the accuracy of the controller in determining the state of the micro switch.

[0021] In some embodiments, the voltage divider circuit includes a third resistor and a fourth resistor. The first end of the third resistor is connected to the second end of the micro switch, and the second end of the third resistor is connected to the controlled end of the switching circuit. The first end of the fourth resistor is connected to the controlled end of the switching circuit, and the second end of the fourth resistor is grounded.

[0022] Based on the above embodiments, a voltage divider circuit is constructed using a third resistor and a fourth resistor. This allows the voltage at the second terminal of the microswitch to be divided by the third and fourth resistors before entering the controlled terminal of the switching circuit. This reduces the probability of a large voltage entering the controlled terminal of the switching circuit, thereby reducing the probability of damage to the switching circuit. It is understood that the voltage divider circuit may include one third resistor and one fourth resistor. In other embodiments, the voltage divider circuit may also include multiple third resistors and one fourth resistor connected in series, all of which can achieve the purpose of voltage division. In the embodiments of this application, the number of third resistors is not specifically limited.

[0023] In some embodiments, the rectifier circuit includes a first diode connected in series with a third resistor, and the cathode of the first diode is connected to the controlled terminal of the switching circuit.

[0024] Based on the above embodiments, the first diode is used for half-wave rectification to filter out the waveform signal of the negative half-axis, so that the controlled terminal of the switching circuit can stably receive the waveform signal of the positive half-axis, thereby preventing the voltage direction received by the controlled terminal of the switching circuit from changing, thus reducing the probability of damage to the switching circuit and enabling the switching circuit to have a longer service life.

[0025] In some embodiments, the voltage regulator circuit includes a first capacitor connected in parallel with a fourth resistor.

[0026] Based on the above embodiments, the first capacitor is used to stabilize the voltage at the controlled end of the switching circuit to reduce voltage fluctuations at the controlled end of the switching circuit, thereby enabling the switching circuit to remain in the on state or in the off state, so that the controller can stably receive low-level detection signals or high-level detection signals, thereby improving the accuracy of the controller in determining the state of the micro switch.

[0027] Specifically, when the first diode performs half-wave rectification, the positive half-wave electrical signal can enter the first capacitor to charge it. When the first capacitor is fully charged, the voltage at the controlled end of the switching circuit is stabilized, thereby maintaining the stable on / off state of the switching circuit and improving the stability of the detection signal acquired by the controller. When the voltage at the second terminal of the microswitch is higher than the voltage between the plates of the first capacitor, the first capacitor charges to stabilize the voltage at the controlled end of the switching circuit; when the voltage at the second terminal of the microswitch is lower than the voltage between the plates of the first capacitor, the first capacitor discharges, also stabilizing the voltage at the controlled end of the switching circuit.

[0028] In some embodiments, the signal processing circuit further includes a fifth resistor, the first end of which is connected to the first end of the fourth resistor, and the second end of which is connected to the controlled end of the switching circuit.

[0029] Based on the above embodiments, the fifth resistor can limit the current entering the controlled terminal of the switching circuit, thereby preventing large current from entering the controlled terminal of the switching circuit, reducing the probability of damage to the switching circuit, and thus enabling the switching circuit to have a longer service life.

[0030] In some embodiments, the low-voltage side circuit includes a drive circuit and a switching circuit. The input terminal of the drive circuit is used to connect to low-voltage electricity, and the output terminal of the drive circuit is connected to the controlled terminal of the thyristor switch. The controlled terminal of the drive circuit is connected to a controller. The first electrode of the thyristor switch is used to connect to low-voltage electricity. The input terminal of the switching circuit is connected to the second electrode of the thyristor switch, and the output terminal of the switching circuit is used to connect to the first terminal of the first load. The controlled terminal of the switching circuit is connected to the controller.

[0031] Based on the above embodiments, the controller can control the switching of the thyristor switching device by controlling the drive circuit to provide low-voltage electricity to the load; the controller can also switch the power supply object of the low-voltage electricity by controlling the state of the switching circuit.

[0032] In some embodiments, the driving circuit includes a ninth resistor, a tenth resistor, a second switching element, an eleventh resistor, a twelfth resistor, and a third capacitor. The first terminal of the ninth resistor is connected to the first electrode of the thyristor switching device and is used to connect to low voltage. The second terminal of the ninth resistor is connected to the control electrode of the thyristor switching device. The first terminal of the tenth resistor is connected to the second terminal of the ninth resistor. The input terminal of the second switching element is connected to the second terminal of the tenth resistor, and the output terminal of the second switching element is grounded. The first terminal of the eleventh resistor is connected to the controller, and the second terminal of the eleventh resistor is connected to the controlled terminal of the second switching element. The first terminal of the twelfth resistor is connected to the second terminal of the eleventh resistor, and the second terminal of the twelfth resistor is grounded. The third capacitor is connected in parallel with the twelfth resistor.

[0033] Based on the above embodiments, when the controller sends a high-level signal to the controlled terminal of the second switching element, the input and output terminals of the second switching element are connected, so that the low-voltage electricity can be grounded sequentially through the ninth resistor, the tenth resistor and the second switching element, so that a voltage difference is generated between the first electrode and the control electrode of the thyristor switching device, so that the first electrode and the second electrode of the thyristor switching device are connected, thereby enabling the low-voltage electricity to supply power to the load through the thyristor and the switching circuit.

[0034] When the controller sends a low-level signal to the controlled terminal of the second switching element, the input and output terminals of the second switching element are disconnected, so that the voltage difference between the first electrode and the control electrode of the thyristor switch is 0, and the first electrode and the second electrode of the thyristor switch are disconnected, thereby stopping the low-voltage power supply to the load.

[0035] In some embodiments, the low-voltage side circuit further includes a varistor, with a first end connected to the first electrode of the silicon controlled rectifier (SCR) and a second end connected to the second electrode of the SCR.

[0036] Based on the above embodiments, the varistor is used to absorb surge current and can provide overvoltage protection for the thyristor switching device, thereby reducing the probability of damage to the thyristor switching device and enabling the thyristor switching device to have a longer service life.

[0037] In some embodiments, the switching circuit includes an electromagnetic relay, a fourth diode, a third switching element, a thirteenth resistor, a fourteenth resistor, and a fourth capacitor. The electromagnetic relay includes a correspondingly configured electromagnet and an armature. The first end of the electromagnet is connected to a power supply. The moving contact of the armature is connected to the second electrode of a silicon controlled rectifier (SCR) switch. The normally open contact of the armature is connected to the second load of the food processor, and the normally closed contact of the armature is connected to the first end of the first load. The anode of the fourth diode is connected to the second end of the electromagnet, and the cathode of the fourth diode is connected to the first end of the electromagnet. The input terminal of the third switching element is connected to the second end of the electromagnet, and the output terminal of the third switching element is grounded. The first end of the thirteenth resistor is connected to a controller, and the second end of the thirteenth resistor is connected to the controlled terminal of the third switching element. The first end of the fourteenth resistor is connected to the second end of the thirteenth resistor, and the second end of the fourteenth resistor is connected to the output terminal of the third switching element. The fourth capacitor is connected in parallel with the fourteenth resistor.

[0038] Based on the above embodiments, when the controller sends a low-level signal to the controlled terminal of the third switching element, the input terminal and the output terminal of the third switching element remain disconnected, so that the armature remains in the normally closed contact, that is, the moving contact of the armature is connected to the normally closed contact, so that when the thyristor switching device is turned on, the first load can be powered by high voltage and low voltage.

[0039] When the controller sends a high-level signal to the controlled terminal of the third switching element, the input and output terminals of the third switching element are connected, so that the power supply can be grounded through the coil and the connected third switching element, so that the power supply can supply power to the coil, so that the coil can generate a magnetic field to attract the armature, thereby making the moving contact and the normally open contact connected. Thus, when the thyristor switching device is turned on, the second load can be powered by high voltage and low voltage.

[0040] This application also provides a food processor, including a cup body, a cup lid, a blending device, and a food processor circuit. The cup body has a processing chamber with an opening. The cup lid is movably connected to the cup body and can be placed over the opening. The blending device is disposed inside the processing chamber. A first load includes a motor and is connected to the cup body, and the output shaft of the motor is drivenly connected to the blending device. A micro switch is disposed on the cup body or the cup lid. When the cup lid is placed over the opening, the micro switch is in a conducting state; when the cup lid is not placed over the opening, the micro switch is in a disconnected state.

[0041] This application also provides a food processor, including a cup body, a lid, a blending device, a base, and a food processor circuit. The cup body has a processing chamber with an opening. The lid is movably connected to the cup body and can be placed over the opening. The blending device is disposed inside the processing chamber. The base is movably connected to the cup body. A first load includes a motor connected to the base, and the output shaft of the motor is drivenly connected to the blending device. A micro switch includes a first sub-switch and a second sub-switch connected in series. The first sub-switch is disposed on the cup body or the lid. The second sub-switch is disposed on the cup body or the base. When the lid is placed over the opening, the first sub-switch is in a conductive state. When the lid is not placed over the opening, the first sub-switch is in a disconnected state. When the cup body is placed on the base, the second sub-switch is in a conductive state. When the cup body is separated from the base, the second sub-switch is in a disconnected state.

[0042] Based on the food processor circuit of this application, a micro switch is used to detect whether the lid is closed on the opening, which can reduce the probability of electronic component failure and improve the stability of the lid's movement. When the lid is not closed on the opening, the high-voltage side circuit cannot supply power to the first load, so that the first load cannot work or is removed from the working state, thereby reducing the probability of food flying out of the opening and providing reliable protection for the user's operation safety.

[0043] Furthermore, the detection circuit can output a corresponding detection signal based on the on / off state of the micro switch, so that the controller can determine the on / off state of the micro switch through the corresponding detection signal. Thus, when the controller determines that the micro switch is in the off state, the controller can control the low-voltage side circuit to stop supplying power to the first load, thereby reducing power consumption and achieving the purpose of saving power. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the structure of a food processor in one embodiment of this application;

[0046] Figure 2 This is a schematic diagram of the circuit framework of a food processor in one embodiment of this application;

[0047] Figure 3 This is a schematic diagram of the detection circuit framework in one embodiment of this application;

[0048] Figure 4This is a circuit diagram of the detection circuit in one embodiment of this application;

[0049] Figure 5 This is a schematic diagram of the detection circuit in another embodiment of this application;

[0050] Figure 6 This is a circuit diagram of the detection circuit in another embodiment of this application;

[0051] Figure 7 This is a schematic diagram of the circuit framework of another food processor according to this application;

[0052] Figure 8 This is a circuit diagram of another food processor circuit according to this application;

[0053] Figure 9 This is a schematic diagram of the circuit framework for another food processor according to this application.

[0054] Explanation of reference numerals in the attached diagram: 1. Food processor; 11. Cup body; 11A. Opening; 12. Cup lid; 2. Food processor circuit; 2A. First load; 2B. Second load; 21. Low-voltage side circuit; 211. Drive circuit; 212. Switching circuit; 22. High-voltage side circuit; 23. Detection circuit; 231. Signal processing circuit; 2311. Voltage divider circuit; 2312. Rectifier circuit; 2313. Voltage regulator circuit; 232. Switching circuit; 233. Current limiting circuit; 234. Clamping circuit; 24. Controller; K. Micro switch; SCR. Silicon controllable rectifier; T. Relay; R1. First resistor; R2. Second resistor; Two resistors; R3, third resistor; R4, fourth resistor; R5, fifth resistor; R6, sixth resistor; R7, seventh resistor; R8, eighth resistor; R9, ninth resistor; R10, tenth resistor; R11, eleventh resistor; R12, twelfth resistor; R13, thirteenth resistor; R14, fourteenth resistor; ZNR, varistor; C1, first capacitor; C2, second capacitor; C3, third capacitor; C4, fourth capacitor; D1, first diode; D2, second diode; D3, third diode; D4, fourth diode; Q1, first switching element; Q2, second switching element; Q3, third switching element. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0056] Please refer to Figure 1 This application provides a food processor 1, which includes a cup body 11, a cup lid 12, and a blending device.

[0057] The cup body 11 has a cooking cavity with an opening 11A, through which ingredients and water can be placed into the cooking cavity.

[0058] The lid 12 is movably connected to the cup body 11 and can be placed over the opening 11A of the cup body 11. Exemplarily, the lid 12 can be rotatably connected to the cup body 11, or the lid 12 can be separately disposed from the cup body 11. In other embodiments, the movable connection between the lid 12 and the cup body 11 may take other forms. In this application embodiment, no specific limitation is made on the connection method between the lid 12 and the cup body 11.

[0059] The mixing device is used to mix or pulverize the water-material mixture within the cooking chamber to suit the user's eating needs. It is understood that the mixing device can be connected to the cup body 11 and detachably mounted at the bottom of the cooking chamber, allowing the user to choose whether to place the mixing device within the food processor 1 based on the actual food being prepared. Furthermore, the food processor 1 can be equipped with multiple mixing devices, allowing the user to conveniently select different mixing devices to prepare different foods based on the ingredients. It is understood that the mixing device includes at least one mixing blade; exemplarily, the mixing device may include two, three, or four mixing blades for mixing or pulverizing the ingredients within the cooking chamber. It is understood that in other embodiments, the mixing device may also be connected to the cup lid 12. In this embodiment, the placement of the mixing device is not specifically limited.

[0060] During the operation of the food processor 1, the blending device inside the cup body 11 rotates to cut or blend the ingredients. If the cup lid 12 is opened during the operation of the food processor 1, the blending device will rotate at high speed and continue to process the ingredients, or if the cup lid 12 is not closed on the cup body 11 and the blending device starts and rotates, the ingredients may easily fly out of the opening 11A of the cup body 11 because the cup lid 12 does not close the opening 11A, which may easily cause a safety accident.

[0061] Based on the above, please refer to Figure 1 and Figure 2 The food processor 1 also includes a food processor circuit 2, which includes a first load 2A, a low-voltage side circuit 21, and a high-voltage side circuit 22. The first end of the low-voltage side circuit 21 is used to connect to low-voltage electricity, and the second end of the low-voltage side circuit 21 is connected to the first end of the first load 2A. The high-voltage side circuit 22 includes a micro switch K, which is disposed on the cup body 11. The first end of the micro switch K is used to connect to high-voltage electricity, and the second end of the micro switch K is connected to the second end of the first load 2A.

[0062] Because the microswitch K is located on the cup body 11, it can be triggered by the cup lid 12. When the cup lid 12 is closed over the opening 11A, the microswitch K is in the ON state. At this time, the high-voltage side circuit 22 and the low-voltage side circuit 21 can supply power to the first load 2A, enabling the first load 2A to operate. Specifically, the first load 2A includes a motor, which is located on the cup body 11, and the motor's output shaft is connected to the mixing device for transmission, facilitating the motor to drive the mixing device to cut or mix ingredients. When the cup lid 12 is not closed over the opening 11A, the microswitch K is in the OFF state. At this time, the high-voltage side circuit 22 is disconnected, and power cannot be supplied to the first load 2A, preventing the first load 2A from operating or causing it to deactivate from its operating state.

[0063] In this embodiment, the micro switch K is used to detect whether the cup lid 12 is covering the opening 11A. This reduces the probability of electronic component failure and improves the stability of the detection of the micro cup lid 12's movement. When the cup lid 12 is not covering the opening 11A, the high-voltage side circuit 22 cannot supply power to the first load 2A, so that the first load 2A cannot work or is removed from the working state. This reduces the probability of food flying out of the opening 11A and provides reliable protection for the user's operational safety.

[0064] It is understood that the micro switch K can also be disposed on the cup lid 12, and can also be triggered when the cup lid 12 is actuated to control whether the high-voltage side current supplies power to the first load 2A. In the embodiments of this application, there are no specific restrictions on the placement of the micro switch K.

[0065] It is understood that the food processor 1 may also include a base, which is movably connected to the cup body 11. The micro switch K includes a first sub-switch and a second sub-switch arranged in series. The first sub-switch is located on the cup body 11 or the cup lid 12; the second sub-switch is located on the cup body 11 or the base. When the cup lid 12 is covering the opening 11A, the first sub-switch is in the on state; when the cup lid 12 is not covering the opening 11A, the first sub-switch is in the off state; when the cup body 11 is placed on the base, the second sub-switch is in the on state; when the cup body 11 is separated from the base, the second sub-switch is in the off state.

[0066] In the event that at least one of the following situations occurs: the lid 12 is not covering the opening 11A, or the cup body 11 is separated from the base, the micro switch K will be in the open state, thus disconnecting the high-voltage side circuit 22 and preventing power supply to the first load 2A. When the lid 12 is covering the opening 11A and the cup body 11 is placed on the base, both the first and second sub-switches are in the closed state, thus energizing the micro switch K. Similarly, when the user opens the lid 12 or separates the cup body 11 from the base, the first load 2A will be de-energized, thereby reducing the probability of safety accidents and providing reliable protection for user safety.

[0067] It is understandable that, to facilitate the acquisition of low-voltage electricity, the food processor circuit 2 typically includes a step-down circuit. This step-down circuit converts high-voltage AC power into low-voltage AC power, allowing the high-voltage AC power to be used as high-voltage electricity and connected to the high-voltage side circuit 22, and the low-voltage AC power to be used as low-voltage electricity and connected to the low-voltage side circuit 21. This enables the first load 2A to be powered through both high-voltage and low-voltage electricity. In this embodiment, the specific form of the step-down circuit and the specific value of the low-voltage electricity are not limited. For example, the high-voltage AC power can be mains electricity, and the equivalent voltage of the low-voltage AC power can be 5V, 10V, 15V, etc.

[0068] It is understood that in the following embodiments, the explanation will be based on the micro switch K responding to the action of the cup lid 12. The micro switch K responding to the action of the cup body 11 and the base can be reasoned and demonstrated using the same logic, and will not be elaborated on in the following text.

[0069] Please refer to Figure 1 and Figure 2 Furthermore, the food processor circuit 2 also includes a detection circuit 23 and a controller 24. The detection circuit 23 is connected to the second terminal of the micro switch K. The controller 24 is connected to the detection circuit 23 and is used to determine the on / off state of the micro switch K based on the detection signal output by the detection circuit 23. The controller 24 is also connected to the low-voltage side circuit 21 so that the low-voltage side circuit 21 can be controlled by the controller 24.

[0070] The detection circuit 23 can output a corresponding detection signal according to the on / off state of the micro switch K, so that the controller 24 can determine the on / off state of the micro switch K through the corresponding detection signal. Then, when the controller 24 determines that the micro switch K is in the off state, the controller 24 can control the low-voltage side circuit 21 to stop supplying power to the first load 2A, thereby reducing the use of electrical energy and achieving the purpose of saving electrical energy.

[0071] Please refer to Figure 1-3In one embodiment, the detection circuit 23 includes a signal processing circuit 231 and a switching circuit 232. The input terminal of the signal processing circuit 231 is connected to the second terminal of the micro switch K. The input terminal of the switching circuit 232 is used to connect to the power supply. The output terminal of the switching circuit 232 is connected to the controller 24. The controlled terminal of the switching circuit 232 is connected to the output terminal of the signal processing circuit 231. The signal processing circuit 231 processes the signal at the second terminal of the micro switch K to facilitate the control of the switching circuit 232. Thus, when the switching of the micro switch K changes, the output terminal of the switching circuit 232 outputs different detection signals, so that the controller 24 can determine the on / off state of the micro switch K based on the different detection signals.

[0072] Please refer to Figure 2-4 In one embodiment, the switching circuit 232 includes a first resistor R1 and a first switching element Q1. The first end of the first resistor R1 is connected to a power supply, and the second end of the first resistor R1 is connected to the controller 24. The input end of the first switching element Q1 is connected to the second end of the first resistor R1, the output end of the first switching element Q1 is grounded, and the controlled end of the first switching element Q1 is connected to the output end of the signal processing circuit 231.

[0073] Understandably, the output voltage of the power supply can be selected according to the design requirements of the circuit. For example, the power supply voltage can be 5V, 10V, 15V, etc.

[0074] When the micro switch K is open, the low voltage of the low voltage side circuit 21 enters the controlled terminal of the first switching element Q1 through the signal processing circuit 231. The conduction condition of the first switching element Q1 is not met. At this time, the first switching element Q1 is in the open state, so that the power supply voltage enters the controller 24, so that the controller 24 receives a high-level detection signal.

[0075] When the micro switch K is turned on, the high voltage of the high voltage side circuit 22 enters the controlled terminal of the first switching element Q1 through the signal processing circuit 231, which satisfies the conduction condition of the first switching element Q1, enabling the input and output terminals of the first switching element Q1 to conduct, so that the second terminal of the first resistor R1 is grounded through the first switching element Q1, and the controller 24 receives a low-level detection signal.

[0076] Furthermore, when the controller 24 receives a high-level detection signal, it determines that the micro switch K is in the open state, indicating that the cup lid 12 is not covering the opening 11A. At this time, the controller 24 can control the low-voltage side circuit 21 to stop supplying power to the first load 2A, reducing power consumption and achieving the purpose of saving power. When the controller 24 receives a low-level detection signal, it determines that the micro switch K is in the on state, indicating that the cup lid 12 is covering the opening 11A. When the controller 24 receives a start command, it can control the first load 2A to work according to the preset program.

[0077] When the first switching element Q1 is turned on, the first resistor R1 can act as a load to prevent the power supply from being directly connected to ground, thereby reducing the probability of power supply damage and enabling the power supply to have a longer service life, which in turn enables the food processor circuit 2 to have a longer service life.

[0078] It is understandable that the first switching element Q1 can be at least one of an NPN transistor (Negative-Positive-Negative Bipolar Junction Transistor) and an NMOS transistor (N-Metal-Oxide-Semiconductor Field-Effect Transistor, NMOSFET).

[0079] Please refer to Figure 2-4 In this embodiment, the first switching element Q1 is a first NPN transistor, the input terminal of the first switching element Q1 is the collector of the first NPN transistor, the output terminal of the first switching element Q1 is the emitter of the first NPN transistor, and the controlled terminal of the first switching element Q1 is the base of the first NPN transistor.

[0080] When the micro switch K is open, the low voltage of the low-voltage side circuit 21 enters the base of the first NPN transistor through the signal processing circuit 231. Since the collector of the first NPN transistor is connected to the power supply voltage (low voltage), the conduction condition of the first NPN transistor is not met. At this time, the collector and emitter of the first NPN transistor are in an open state, so that the power supply voltage enters the controller 24, so that the controller 24 receives a high-level detection signal.

[0081] When the micro switch K is turned on, the high voltage of the high voltage side circuit 22 enters the base of the first NPN transistor through the signal processing circuit 231, which makes the base voltage of the first NPN transistor greater than the collector voltage, satisfying the conduction condition of the first NPN transistor. This enables the collector and emitter of the first NPN transistor to conduct, and the second end of the first resistor R1 is grounded through the first NPN transistor, so that the controller 24 can receive a low-level detection signal.

[0082] In other embodiments, the first switching element Q1 can also be equivalently replaced by an NMOS transistor, which will not be elaborated further here. It is understood that the first switching element Q1 can also be at least one of a PNP transistor (Positive-Negative-Positive Bipolar Junction Transistor) and a PMOS transistor (Positive Channel Metal-Oxide-Semiconductor Field-Effect Transistor, PMOSFET), which can also achieve similar effects, and will not be elaborated further here.

[0083] Please refer to Figure 2-4 In one embodiment, the detection circuit 23 further includes a current limiting circuit 233. The first end of the current limiting circuit 233 is connected to the second end of the first resistor R1, and the second end of the current limiting circuit 233 is connected to the controller 24. The current limiting circuit 233 can reduce the probability of a large current from the power supply entering the controller 24, reduce the probability of the large current burning out the controller 24, and reduce the probability of the controller 24 being damaged, thereby enabling the controller 24 to have a longer service life, so that the food processor circuit 2 can have a longer service life.

[0084] Specifically, the current limiting circuit 233 includes a second resistor R2. The first end of the second resistor R2 is connected to the second end of the first resistor R1, and the second end of the second resistor R2 is connected to the controller 24. The second resistor R2 reduces the probability of a large current entering the controller 24, thus reducing the probability of the controller 24 being damaged by a large current, and consequently extending the lifespan of the controller 24, and consequently extending the lifespan of the food processor circuit 2.

[0085] Please refer to Figure 2-4In one embodiment, the signal processing circuit 231 includes a voltage divider circuit 2311, a rectifier circuit 2312, and a voltage regulator circuit 2313. The voltage divider circuit 2311 and the rectifier circuit 2312 are connected in series between the second terminal of the micro switch K and the controlled terminal of the switch circuit 232. The first terminal of the voltage regulator circuit 2313 is connected to the controlled terminal of the switch circuit 232, and the second terminal of the voltage regulator circuit 2313 is grounded.

[0086] Voltage divider circuit 2311 is used to divide the voltage entering the controlled terminal of switch circuit 232 to reduce the probability of high voltage entering the controlled terminal of switch circuit 232, thereby reducing the probability of switch circuit 232 being damaged, so that switch circuit 232 can have a longer service life, and thus food processor circuit 2 can have a longer service life.

[0087] The rectifier circuit 2312 is used to rectify the voltage entering the controlled terminal of the switch circuit 232 so that the voltage entering the controlled terminal of the switch circuit 232 is a DC voltage.

[0088] The voltage regulator circuit 2313 is used to regulate the voltage entering the controlled terminal of the switching circuit 232 to reduce voltage fluctuations at the controlled terminal of the switching circuit 232, thereby enabling the switching circuit 232 to remain in the on state or in the off state, so that the controller 24 can stably receive low-level detection signals or high-level detection signals, thereby improving the accuracy of the controller 24 in determining the state of the micro switch K.

[0089] Please refer to Figure 2-4 Specifically, the voltage divider circuit 2311 includes a third resistor R3 and a fourth resistor R4. The first end of the third resistor R3 is connected to the second end of the micro switch K, and the second end of the third resistor R3 is connected to the controlled end of the switching circuit 232. The first end of the fourth resistor R4 is connected to the controlled end of the switching circuit 232, and the second end of the fourth resistor R4 is grounded. The voltage divider circuit 2311, formed by the third resistor R3 and the fourth resistor R4, allows the voltage at the second end of the micro switch K to be divided by the third resistor R3 and the fourth resistor R4 before entering the controlled end of the switching circuit 232. This reduces the probability of a large voltage entering the controlled end of the switching circuit 232, thereby reducing the probability of damage to the switching circuit 232. It is understood that the voltage divider circuit 2311 may include one third resistor R3 and one fourth resistor R4. In other embodiments, the voltage divider circuit 2311 may also include multiple third resistors R3 and one fourth resistor R4 connected in series, all of which can achieve the purpose of voltage division. In this embodiment, the number of third resistors R3 is not specifically limited.

[0090] The rectifier circuit 2312 includes a first diode D1, which is connected in series with a third resistor R3. The cathode of the first diode D1 is connected to the controlled terminal of the switch circuit 232. The first diode D1 is used for half-wave rectification to filter out the waveform signal of the negative half-axis, so that the controlled terminal of the switch circuit 232 can stably receive the waveform signal of the positive half-axis. This prevents the voltage direction of the controlled terminal of the switch circuit 232 from changing, thereby reducing the probability of damage to the switch circuit 232 and thus enabling the switch circuit 232 to have a longer service life.

[0091] The voltage regulator circuit 2313 includes a first capacitor C1, which is connected in parallel with a fourth resistor R4. The first capacitor C1 is used to regulate the voltage entering the controlled terminal of the switching circuit 232 to reduce voltage fluctuations at the controlled terminal of the switching circuit 232. This allows the switching circuit 232 to remain in the on or off state, enabling the controller 24 to stably receive low-level or high-level detection signals, thereby improving the accuracy of the controller 24 in determining the state of the micro switch K.

[0092] Please refer to Figure 2-4 In this embodiment, when the voltage at the second terminal of the micro switch K is higher than the inter-plate voltage of the first capacitor C1, the first capacitor C1 is charged to stabilize the voltage at the controlled terminal of the switching circuit 232; when the voltage at the second terminal of the micro switch K is lower than the inter-plate voltage of the first capacitor C1, the first capacitor C1 is discharged, which also stabilizes the voltage at the controlled terminal of the switching circuit 232.

[0093] Please refer to Figure 2-4 In one embodiment, the signal processing circuit 231 further includes a fifth resistor R5. The first end of the fifth resistor R5 is connected to the first end of the fourth resistor R4, and the second end of the fifth resistor R5 is connected to the controlled end of the switching circuit 232. The fifth resistor R5 can limit the current entering the controlled end of the switching circuit 232 to prevent large current from entering the controlled end of the switching circuit 232, reduce the probability of damage to the switching circuit 232, and thus enable the switching circuit 232 to have a longer service life.

[0094] Please refer to Figure 2 and Figure 5 In one embodiment, the detection circuit 23 may further include a rectifier circuit 2312 and a voltage divider circuit 2311 connected to each other. The rectifier circuit 2312 is connected to the second terminal of the micro switch K, and the controller 24 is connected to the voltage divider circuit 2311. It can also determine the on / off state of the micro switch K based on the detection signal output by the voltage divider circuit 2311.

[0095] When the microswitch K is in the open state, the low voltage outputs a low-level detection signal via the rectifier circuit 2312 and the voltage divider circuit 2311. When the microswitch K is in the closed state, the high voltage outputs a high-level detection signal via the rectifier circuit 2312 and the voltage divider circuit 2311. Therefore, the controller 24 can determine the open / closed state of the microswitch K based on the detection signal output by the voltage divider circuit 2311.

[0096] Furthermore, only a rectifier circuit 2312 and a voltage divider circuit 2311 exist between the controller 24 and the second terminal of the micro switch K. When the micro switch K is turned on, the voltage change at the second terminal of the micro switch K can cause a voltage change in the detection signal acquired by the controller 24. This allows the controller 24 to calculate the voltage value at the second terminal of the micro switch K when it is turned on by combining the voltage change of the detection signal with the resistance distribution in the detection circuit 23. This achieves the purpose of obtaining the line voltage of the high-voltage side circuit 22 based on the detection signal, thereby realizing the voltage detection of high voltage.

[0097] Please refer to Figure 2 , Figure 5 and Figure 6 In one embodiment, the voltage divider circuit 2311 includes a sixth resistor R6 and a seventh resistor R7. The first end of the sixth resistor R6 is connected to the second end of the micro switch K, and the second end of the sixth resistor R6 is connected to the controller 24. The first end of the seventh resistor R7 is connected to the second end of the sixth resistor R6, and the second end of the seventh resistor R7 is grounded.

[0098] A voltage divider circuit 2311 is formed by the sixth resistor R6 and the seventh resistor R7, so that the voltage at the second terminal of the microswitch K can be divided by the sixth resistor R6 and the seventh resistor R7 before entering the controller 24. This reduces the probability of a large voltage entering the controller 24, thereby reducing the probability of damage to the controller 24. It is understood that the voltage divider circuit 2311 may include one sixth resistor R6 and one seventh resistor R7. In other embodiments, the voltage divider circuit 2311 may also include multiple sixth resistors R6 and one seventh resistor R7 connected in series, all of which can achieve the purpose of voltage division. In this embodiment, the number of sixth resistors R6 is not specifically limited.

[0099] Please refer to Figure 2 , Figure 5 and Figure 6In one embodiment, the rectifier circuit 2312 includes a second diode D2, which is connected in forward series with a sixth resistor R6, and the cathode of the second diode D2 is connected to the controller 24. The second diode D2 is used for half-wave rectification to filter out the waveform signal of the negative half-axis, so that the controller 24 can stably receive the waveform signal of the positive half-axis, thereby preventing the voltage direction received by the controller 24 from changing, thus reducing the probability of damage to the controller 24 and enabling the controller 24 to have a longer service life.

[0100] Please refer to Figure 2 , Figure 5 and Figure 6 In one embodiment, the detection circuit 23 further includes a voltage regulator circuit 2313. The first terminal of the voltage regulator circuit 2313 is connected to the first terminal of the seventh resistor R7, and the second terminal of the voltage regulator circuit 2313 is grounded. The voltage regulator circuit 2313 is used to regulate the voltage entering the controller 24 to reduce voltage fluctuations entering the controller 24, thereby enabling the controller 24 to stably receive low-level detection signals or high-level detection signals, thereby improving the accuracy of the controller 24 in determining the state of the micro switch K.

[0101] Please refer to Figure 2 , Figure 5 and Figure 6 Specifically, the voltage regulator circuit 2313 includes a second capacitor C2, which is connected in parallel with the seventh resistor R7. The second capacitor C2 is used to regulate the voltage entering the controller 24 to reduce voltage fluctuations entering the controller 24, thereby enabling the controller 24 to stably receive low-level or high-level detection signals, and thus improving the accuracy of the controller 24 in determining the state of the micro switch K.

[0102] When half-wave rectification is performed using the second diode D2, the positive half-wave electrical signal can enter the second capacitor C2 to charge it. When the second capacitor C2 is fully charged, the voltage at the controlled end of the switching circuit 232 is stabilized, thereby maintaining the stable on / off state of the switching circuit 232 and improving the stability of the detection signal acquired by the controller 24. When the voltage at the first end of the seventh resistor R7 is higher than the voltage between the plates of the second capacitor C2, the second capacitor C2 is charged to stabilize the voltage at the first end of the seventh resistor R7; when the voltage at the first end of the seventh resistor R7 is lower than the voltage between the plates of the second capacitor C2, the second capacitor C2 is discharged, which also stabilizes the voltage at the controlled end of the switching circuit 232.

[0103] Please refer to Figure 2 , Figure 5 and Figure 6In one embodiment, the detection circuit 23 further includes a clamping circuit 234. The first end of the clamping circuit 234 is connected to the first end of the seventh resistor R7, and the second end of the clamping circuit 234 is used to connect to the power supply. When the voltage at the first end of the seventh resistor R7 is greater than a preset voltage, the clamping circuit 234 is turned on to stabilize the voltage at the first end of the seventh resistor R7 to the clamping voltage, thereby reducing the probability of a large voltage entering the controller 24, so that the controller 24 can have a longer service life.

[0104] Please refer to Figure 2 , Figure 5 and Figure 6 Specifically, the clamping circuit 234 includes a third diode D3. The positive terminal of the third diode D3 is connected to the first terminal of the seventh resistor R7, and the negative terminal of the third diode D3 is used to connect to the power supply. When the voltage at the first terminal of the seventh resistor R7 is greater than the preset voltage, the third diode D3 conducts in the forward direction to stabilize the voltage at the first terminal of the seventh resistor R7 to the clamping voltage, thereby reducing the probability of a large voltage entering the controller 24, so that the controller 24 can have a longer service life.

[0105] For example, the power supply voltage can be 5V, 10V, 15V, etc., and the corresponding preset voltage can be 5.7V, 10.7V, 15.7V, etc., and the clamping voltage can be 5.7V, 10.7V, 15.7V, etc. In other embodiments, the power supply voltage can also be other values. In the embodiments of this application, no specific limitation is made on the power supply voltage.

[0106] Please refer to Figure 2 , Figure 5 and Figure 6 In one embodiment, the detection circuit 23 further includes a current limiting circuit 233. The first end of the current limiting circuit 233 is connected to the first end of the seventh resistor R7, and the second end of the current limiting circuit 233 is connected to the controller 24. The current limiting circuit 233 can reduce the probability of a large current from the power supply entering the controller 24, reduce the probability of the large current burning out the controller 24, and reduce the probability of the controller 24 being damaged, thereby enabling the controller 24 to have a longer service life, so that the food processor circuit 2 can have a longer service life.

[0107] Please refer to Figure 2 , Figure 5 and Figure 6Specifically, the current limiting circuit 233 includes an eighth resistor R8. The first end of the eighth resistor R8 is connected to the first end of the seventh resistor R7, and the second end of the eighth resistor R8 is connected to the controller 24. The eighth resistor R8 can reduce the probability of a large current from the power supply entering the controller 24, reduce the probability of the large current burning out the controller 24, and reduce the probability of the controller 24 being damaged, thereby enabling the controller 24 to have a longer service life, so that the food processor circuit 2 can have a longer service life.

[0108] Please refer to Figure 2 and Figure 7 In one embodiment, the low-voltage side circuit 21 includes a drive circuit 211 and a switching circuit 212. The input terminal of the drive circuit 211 is used to connect to low-voltage electricity, and the output terminal of the drive circuit 211 is connected to the controlled terminal of the silicon controlled rectifier (SCR). The controlled terminal of the drive circuit 211 is connected to the controller 24. The first electrode of the SCR is used to connect to low-voltage electricity. The input terminal of the switching circuit 212 is connected to the second electrode of the SCR, and the output terminal of the switching circuit 212 is used to connect to the first terminal of the first load 2A. The controlled terminal of the switching circuit 212 is connected to the controller 24. The controller 24 can control the switching of the SCR by controlling the drive circuit 211 to provide low-voltage electricity to the load. The controller 24 can also switch the power supply target of the low-voltage electricity by controlling the state of the switching circuit 212.

[0109] Please refer to Figure 2 , Figure 7 and Figure 8 Specifically, the drive circuit 211 includes a ninth resistor R9, a tenth resistor R10, a second switching element Q2, an eleventh resistor R11, a twelfth resistor R12, and a third capacitor C3. The first end of the ninth resistor R9 is connected to the first electrode of the SCR and is used to connect to low voltage. The second end of the ninth resistor R9 is connected to the control electrode of the SCR. The first end of the tenth resistor R10 is connected to the second end of the ninth resistor R9. The input end of the second switching element Q2 is connected to the second end of the tenth resistor R10, and the output end of the second switching element Q2 is grounded. The first end of the eleventh resistor R11 is connected to the controller 24, and the second end of the eleventh resistor R11 is connected to the controlled end of the second switching element Q2. The first end of the twelfth resistor R12 is connected to the second end of the eleventh resistor R11, and the second end of the twelfth resistor R12 is grounded. The third capacitor C3 is connected in parallel with the twelfth resistor R12.

[0110] When the controller 24 sends a high-level signal to the controlled terminal of the second switching element Q2, the input and output terminals of the second switching element Q2 are connected, so that the low-voltage electricity can be grounded sequentially through the ninth resistor R9, the tenth resistor R10 and the second switching element Q2, so that a voltage difference is generated between the first electrode and the control electrode of the silicon controlled rectifier (SCR), so that the first electrode and the second electrode of the SCR are connected, thereby enabling the low-voltage electricity to supply power to the load through the SCR and the switching circuit 212.

[0111] When the controller 24 sends a low-level signal to the controlled terminal of the second switching element Q2, the input and output terminals of the second switching element Q2 are disconnected, so that the voltage difference between the first electrode and the control electrode of the silicon controlled rectifier (SCR) is 0, and the first and second electrodes of the SCR are disconnected, thereby stopping the low-voltage power supply to the load.

[0112] When the controller 24 sends a signal to the controlled terminal of the second switching element Q2, the eleventh resistor R11 and the twelfth resistor R12 can generate a stable voltage drop between the controlled terminal and the output terminal of the second switching element Q2. When the controller 24 sends a high-level signal to the controlled terminal of the second switching element Q2, the voltage drop between the controlled terminal and the output terminal of the second switching element Q2 satisfies the conduction condition of the second switching element Q2, so that the second switching element Q2 is turned on.

[0113] The third capacitor C3 can stabilize the voltage at the controlled terminal of the second switching element Q2, so that the second switching element Q2 can be kept in the on or off state.

[0114] It is understandable that the second switching element Q2 can be at least one of a transistor and a MOSFET, which will not be elaborated on here.

[0115] Please refer to Figure 2 , Figure 7 and Figure 8 In one embodiment, the low-voltage side circuit 21 further includes a varistor ZNR. The first terminal of the varistor ZNR is connected to the first electrode of the silicon controlled rectifier (SCR), and the second terminal of the varistor ZNR is connected to the second electrode of the SCR. The varistor ZNR is used to absorb surge current and provides overvoltage protection for the SCR, reducing the probability of SCR damage and thus extending the SCR's service life.

[0116] Please refer to Figure 2 , Figure 7 and Figure 8In one embodiment, the switching circuit 212 includes an electromagnetic relay T, a fourth diode D4, a third switching element Q3, a thirteenth resistor R13, a fourteenth resistor R14, and a fourth capacitor C4. The electromagnetic relay T includes a correspondingly configured electromagnet and an armature. The first end of the electromagnet is used to connect to a power supply. The moving contact of the armature is connected to the second electrode of the silicon controlled rectifier (SCR) switch. The normally open contact of the armature is used to connect to the second load 2B of the food processor 1, and the normally closed contact of the armature is connected to the first end of the first load 2A. The positive terminal of the fourth diode D4 is connected to the electromagnet. The second terminal of the fourth diode D4 is connected to the first terminal of the electromagnet; the input terminal of the third switching element Q3 is connected to the second terminal of the electromagnet, and the output terminal of the third switching element Q3 is grounded; the first terminal of the thirteenth resistor R13 is connected to the controller 24, and the second terminal of the thirteenth resistor R13 is connected to the controlled terminal of the third switching element Q3; the first terminal of the fourteenth resistor R14 is connected to the second terminal of the thirteenth resistor R13, and the second terminal of the fourteenth resistor R14 is connected to the output terminal of the third switching element Q3; the fourth capacitor C4 is connected in parallel with the fourteenth resistor R14.

[0117] When the controller 24 sends a low-level signal to the controlled terminal of the third switching element Q3, the input and output terminals of the third switching element Q3 remain disconnected, so that the armature remains in the normally closed contact, that is, the moving contact of the armature is connected to the normally closed contact, so that when the silicon controlled rectifier (SCR) is turned on, the first load 2A can be powered by high voltage and low voltage.

[0118] When the controller 24 sends a high-level signal to the controlled terminal of the third switching element Q3, the input and output terminals of the third switching element Q3 are connected, allowing power to be grounded through the coil and the connected third switching element Q3. This enables the power supply to power the coil, allowing the coil to generate a magnetic field that attracts the armature, thereby connecting the moving contact and the normally open contact. Thus, when the silicon controlled rectifier (SCR) is turned on, high-voltage and low-voltage power can be supplied to the second load 2B. The first terminal of the second load 2B is connected to the normally open contact of the armature, and the second terminal of the second load 2B is connected to the first terminal of the microswitch K. For example, the second load 2B can be a heating device.

[0119] When the controller 24 sends a signal to the controlled terminal of the third switching element Q3, the thirteenth resistor R13 and the fourteenth resistor R14 can generate a stable voltage drop between the controlled terminal and the output terminal of the third switching element Q3. When the controller 24 sends a high-level signal to the controlled terminal of the third switching element Q3, the voltage drop between the controlled terminal and the output terminal of the third switching element Q3 satisfies the conduction condition of the third switching element Q3, so that the third switching element Q3 is turned on.

[0120] The fourth capacitor C4 can stabilize the voltage at the controlled terminal of the third switching element Q3, so that the third switching element Q3 can be kept in the on or off state.

[0121] It is understandable that the third switching element Q3 can be at least one of a transistor and a MOSFET, which will not be elaborated on here.

[0122] Please refer to Figure 2 , Figure 7 and Figure 8 In this embodiment, when the cup lid 12 is opened, the micro switch K is disconnected, so that the high voltage stops supplying power to the first load 2A. At this time, the controller 24 can receive the corresponding detection signal to determine that the micro switch K is disconnected. The controller 24 can further control the second switching element Q2 to disconnect, so that the silicon controlled rectifier (SCR) is disconnected, and control the third switching element Q3 to conduct, so as to switch to the state of supplying power to the second load 2B. Thus, through the above three means, it can be fully ensured that the first load 2A stops when the cup lid 12 is opened, thereby reducing the probability of food flying out from the opening 11A and providing reliable protection for the user's operation safety.

[0123] Please refer to Figure 2 , Figure 7 and Figure 9 It is understandable that the first end of the first load 2A and the first end of the second load 2B can both be connected to the second end of the micro switch K, so that when the cup lid 12 is opened, both the first load 2A and the second load 2B can be de-energized, thereby reducing the probability of food flying out of the opening 11A. Of course, the first end of the second load 2B can also be connected to the first end of the micro switch K, which can similarly de-energize the first load 2A when the cup lid 12 is opened, thereby reducing the probability of food flying out of the opening 11A.

[0124] It is understandable that the micro switch K can also be set in the low-voltage side circuit 21. That is, the first end of the micro switch K is connected to the second end of the first load 2A, the second end of the micro switch K is connected to the normally closed contact of the armature, and the detection circuit 23 is connected to the second end of the micro switch K. In this way, when the conduction angle of the silicon controlled rectifier (SCR) is small, the detection circuit 23 can obtain the voltage transformation of the second end of the micro switch K, and thus also obtain the on / off state of the micro switch K, so that the controller 24 can determine the state of the cup lid 12. In this embodiment, this will not be described in detail.

[0125] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0126] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0127] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0128] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0129] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A food processor circuit, characterized in that, include: First load; The low-voltage side circuit has a first terminal for connecting to low-voltage electricity and a second terminal connected to the first terminal of the first load, and the low-voltage side circuit includes a thyristor switching device. The high-voltage side circuit includes a micro switch, wherein the first end of the micro switch is used to connect to high voltage, and the second end is connected to the second end of the first load; The detection circuit is connected to the second terminal of the micro switch; as well as The controller, connected to the detection circuit, is used to determine the on / off state of the micro switch based on the detection signal output by the detection circuit.

2. The food processor circuit as described in claim 1, characterized in that, The detection circuit includes: The signal processing circuit has its input terminal connected to the second terminal of the micro switch; and The switching circuit has an input terminal for connecting to the power supply, an output terminal for connecting to the controller, and a controlled terminal for connecting to the output terminal of the signal processing circuit.

3. The food processor circuit as described in claim 2, characterized in that, The switching circuit includes: A first resistor, with a first end connected to the power supply and a second end connected to the controller; and The first switching element has its input terminal connected to the second terminal of the first resistor, its output terminal grounded, and its controlled terminal connected to the output terminal of the signal processing circuit.

4. The food processor circuit as described in claim 3, characterized in that, The detection circuit further includes: The current limiting circuit has its first terminal connected to the second terminal of the first resistor, and its second terminal connected to the controller.

5. The food processor circuit as described in claim 4, characterized in that, The current limiting circuit includes: The second resistor has its first end connected to the second end of the first resistor, and its second end connected to the controller.

6. The food processor circuit as described in claim 2, characterized in that, The signal processing circuit includes a voltage divider circuit, a rectifier circuit, and a voltage regulator circuit. The voltage divider circuit and the rectifier circuit are connected in series between the second terminal of the micro switch and the controlled terminal of the switch circuit. The first terminal of the voltage regulator circuit is connected to the controlled terminal of the switch circuit, and the second terminal of the voltage regulator circuit is grounded.

7. The food processor circuit as described in claim 6, characterized in that, The voltage divider circuit includes: The third resistor has its first end connected to the second end of the micro switch, and its second end connected to the controlled end of the switching circuit; and The fourth resistor has its first end connected to the controlled end of the switching circuit and its second end grounded.

8. The food processor circuit as described in claim 7, characterized in that, The rectifier circuit includes: A first diode is connected in series with the third resistor, and the cathode of the first diode is connected to the controlled terminal of the switching circuit.

9. The food processor circuit as described in claim 7, characterized in that, The voltage regulator circuit includes: The first capacitor is connected in parallel with the fourth resistor.

10. The food processor circuit as described in claim 8, characterized in that, The signal processing circuit further includes: The fifth resistor has its first end connected to the first end of the fourth resistor, and its second end connected to the controlled end of the switching circuit.

11. The food processor circuit as described in any one of claims 1 to 10, characterized in that, The low-voltage side circuit includes: The driving circuit has an input terminal for connecting to the low-voltage electricity, an output terminal connected to the controlled terminal of the thyristor switch, and the controlled terminal connected to the controller; the first electrode of the thyristor switch is used for connecting to the low-voltage electricity; and The switching circuit has its input terminal connected to the second electrode of the thyristor switching device, its output terminal connected to the first terminal of the first load, and its controlled terminal connected to the controller.

12. The food processor circuit as described in claim 11, characterized in that, The driving circuit includes: The ninth resistor has its first end connected to the first electrode of the thyristor switch and used to connect to the low voltage power supply; the second end of the ninth resistor is connected to the control electrode of the thyristor switch. The tenth resistor has its first end connected to the second end of the ninth resistor; The second switching element has its input terminal connected to the second terminal of the tenth resistor and its output terminal grounded. The eleventh resistor has its first end connected to the controller and its second end connected to the controlled end of the second switching element. The twelfth resistor has its first terminal connected to the second terminal of the eleventh resistor, and its second terminal grounded; and The third capacitor is connected in parallel with the twelfth resistor.

13. The food processor circuit as described in claim 11, characterized in that, The low-voltage side circuit also includes: The varistor has its first end connected to the first electrode of the thyristor switch and its second end connected to the second electrode of the thyristor switch.

14. The food processor circuit as described in claim 11, characterized in that, The switching circuit includes: An electromagnetic relay includes a corresponding electromagnet and an armature; the first end of the electromagnet is used to connect to a power source; the moving contact of the armature is connected to the second electrode of the thyristor switch; the normally open contact of the armature is used to connect to the second load of the food processor; and the normally closed contact of the armature is connected to the first end of the first load. The fourth diode has its positive terminal connected to the second end of the electromagnet and its negative terminal connected to the first end of the electromagnet. The third switching element has its input terminal connected to the second terminal of the electromagnet and its output terminal grounded. The thirteenth resistor has its first end connected to the controller and its second end connected to the controlled end of the third switching element. The fourteenth resistor has its first end connected to the second end of the thirteenth resistor, and its second end connected to the output terminal of the third switching element; and The fourth capacitor is connected in parallel with the fourteenth resistor.

15. A food processor, characterized in that, include: The cup body has a cooking cavity with an opening; The cup lid is movably connected to the cup body and can be placed over the opening; A mixing device is installed inside the cooking cavity; as well as The food processor circuit as described in any one of claims 1 to 14, wherein the first load includes a motor and is connected to the cup body, and the output shaft of the motor is drively connected to the blending device, and the micro switch is disposed on the cup body or the cup lid; When the cup lid is placed over the opening, the micro switch is in the ON state; when the cup lid is not placed over the opening, the micro switch is in the OFF state.

16. A food processor, characterized in that, include: The cup body has a cooking cavity with an opening; The cup lid is movably connected to the cup body and can be placed over the opening; A mixing device is installed inside the cooking cavity; The base is movably connected to the cup body; as well as The food processor circuit as described in any one of claims 1 to 14, wherein the first load includes a motor and is connected to the base, and the output shaft of the motor is drively connected to the blending device, and the micro switch includes a first sub-switch and a second sub-switch arranged in series, wherein the first sub-switch is disposed on the cup body or the cup lid; and the second sub-switch is disposed on the cup body or the base; When the cup lid is placed over the opening, the first sub-switch is in the ON state; when the cup lid is not placed over the opening, the first sub-switch is in the OFF state; when the cup body is placed on the base, the second sub-switch is in the ON state; when the cup body is separated from the base, the second sub-switch is in the OFF state.

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