Food processor circuit and food processor

Abstract

The application provides a food processor circuit and a food processor. First and second power input terminals of the food processor circuit are used for being connected to an alternating current power supply. A cup cover strong current switch is connected to the first power input terminal and a first end of a load. The second power input terminal is connected to a second end of the load. First and second zero-crossing detection circuits are used for detecting zero-crossing points of alternating current of the alternating current power supply. An input terminal of the first zero-crossing detection circuit and an input terminal of the second zero-crossing detection circuit are connected between the second end of the load and the second power input terminal. A controller comprises first and second zero-crossing detection ports. The first zero-crossing detection port is connected to an output terminal of the first zero-crossing detection circuit. The second zero-crossing detection port is connected to an output terminal of the second zero-crossing detection circuit. The controller determines an opening and closing state of the cup cover strong current switch through signals of the first and / or second zero-crossing detection ports. Thus, the safety is high.

Description

Technical Field

[0001] This application relates to the field of small household appliances, and more particularly 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 mainly include, but are not limited to, making soy milk, grinding dry powders, juicing, mincing meat, shaved ice, making coffee, and preparing beauty masks for women, among others. Food processors can include soy milk makers, blenders, or high-speed blenders, etc. These diverse functions enrich people's lives.

[0003] Some food processors have a lid switch connected in series with a thermistor. A temperature detection circuit can detect the continuity of the thermistor circuit to determine if the lid is open. When the lid is open, the lid switch activates, and the controller first uses the temperature detection circuit to determine if the thermistor circuit is open before stopping the load. However, if the detection fails, the load can still operate normally, resulting in poor safety. Utility Model Content

[0004] This application provides a highly secure food processor circuit and a food processor.

[0005] This application provides a food processor circuit for use in a food processor. The food processor includes a food processor cup assembly and a load. The food processor cup assembly includes a food processor cup body and a food processor cup lid. The food processor cup lid can cover the food processor cup body. The food processor circuit includes: The first power input terminal and the second power input terminal are used to connect to an AC power source; A high-voltage switch for the cup lid is provided, wherein the high-voltage switch for the cup lid is connected to the first power input terminal and the first terminal of the load; the second power input terminal is connected to the second terminal of the load; the high-voltage switch for the cup lid is closed when the cooking cup lid is closed on the cooking cup body, and the high-voltage switch for the cup lid is open when the cooking cup lid is opened. A first zero-crossing detection circuit and a second zero-crossing detection circuit are used to detect the zero-crossing point of the AC power supply; the input terminals of the first and second zero-crossing detection circuits are connected between the second terminal of the load and the second power supply input terminal; and The controller includes a first zero-crossing detection port and a second zero-crossing detection port. The first zero-crossing detection port is connected to the output terminal of the first zero-crossing detection circuit, and the second zero-crossing detection port is connected to the output terminal of the second zero-crossing detection circuit. The controller determines the open / closed state of the cup lid power switch through the signals from the first zero-crossing detection port and / or the second zero-crossing detection port.

[0006] This application provides a food processor circuit, which includes a lid power switch, a first zero-crossing detection circuit, a second zero-crossing detection circuit, and a controller. The lid power switch is connected to a first power input terminal and a first terminal of a load, while a second power input terminal is connected to a second terminal of the load. When the food processor lid is closed, the lid power switch is closed. When the food processor lid is open, the lid power switch is open. Thus, when the food processor lid is open, the load is disconnected from the first power input terminal, preventing the load from operating and improving safety. Simultaneously, the input terminals of the first and second zero-crossing detection circuits are connected between the second terminal of the load and the second power input terminal. When the food processor lid is open, the zero-crossing signals of the first and second zero-crossing detection circuits are lost. Therefore, the controller determines the open / closed state of the lid power switch through the signals from the first and / or second zero-crossing detection ports. This facilitates the determination of the open / closed state of the lid power switch.

[0007] Furthermore, the load includes a motor and a heating assembly, and the cup lid power switch is connected to the first power input terminal, the first terminal of the motor, and the first terminal of the heating assembly; The input terminal of the first zero-crossing detection circuit is connected to the second terminal of the heating component; the input terminal of the second zero-crossing detection circuit is connected to the second terminal of the motor. In some embodiments, the input terminal of the first zero-crossing detection circuit is connected to the second terminal of the heating component, and the input terminal of the second zero-crossing detection circuit is connected to the second terminal of the motor. When the signal of one of the first or second zero-crossing detection circuits is abnormal, it will not affect the signal of the other, thus further improving safety and reliability. Simultaneously, the zero-crossing signal of the zero-crossing detection circuit can also be used to detect the voltage of the AC power supply, thus simplifying the circuit.

[0008] Furthermore, the food processor circuit also includes a load switching circuit, which is connected to the second power input terminal, the motor, and the heating element; the controller includes a first control port, which is connected to the load switching circuit; the controller controls the load switching circuit through the first control port to switch the second power input terminal between the motor and the heating element. The input terminal of the first zero-crossing detection circuit is connected between the motor and the load switching circuit; the input terminal of the second zero-crossing detection circuit is connected between the heating component and the load switching circuit. In some embodiments, the load switching circuit can be used to switch the second power input terminal between the motor and the heating component, thereby achieving different operating modes. When the cup lid's high-voltage switch is closed, the heating component and the motor can be controlled respectively through the zero-crossing signals of the first and second zero-crossing detection circuits, thus ensuring high reliability.

[0009] Furthermore, the food processor circuit also includes a load drive circuit; the load drive circuit is connected to the second power input terminal and the load switching circuit; the load drive circuit is used to drive the motor or the heating component to work. The controller includes a second control port connected to the load drive circuit. When the cup lid power switch is closed, the controller controls the load drive circuit to drive the motor or the heating component. In some embodiments, the load drive circuit is connected to a second power input terminal and a load switching circuit. The load drive circuit can be connected to the motor or heating component, thereby enabling the motor or heating component to operate. This design is simple.

[0010] Furthermore, the load switching circuit includes a switching switch; the switching switch includes a moving contact, a first stationary contact, and a second stationary contact; the moving contact is connected to the second power input terminal; the first stationary contact is connected to the motor and the first zero-crossing detection circuit; the second stationary contact is connected to the heating component and the second zero-crossing detection circuit. In some embodiments, the load switching circuit includes a switching switch, which enables the second power input terminal to switch between the motor and the heating component, resulting in high reliability.

[0011] Furthermore, the food processor circuit includes a DC power supply terminal and a ground terminal; the first zero-crossing detection circuit includes a zero-crossing detection transistor, one end of which is connected between the DC power supply terminal and the first zero-crossing detection port; the other end of which is connected to the ground terminal; the zero-crossing detection transistor includes a control terminal, which is connected to the heating component. In some embodiments, the first zero-crossing detection circuit includes a zero-crossing detection transistor, which can improve the accuracy of the zero-crossing signal output by the first zero-crossing detection circuit, thereby ensuring precise load control.

[0012] Further, the first zero-crossing detection circuit includes a first diode, the anode of which is connected to the heating component; the cathode of which is connected to the control terminal of the zero-crossing detection transistor. In some embodiments, the first diode can rectify the input AC power; and / or The first zero-crossing detection circuit further includes at least two first voltage-dividing resistors connected in series between the heating component and the ground terminal, and the control terminal of the zero-crossing detection transistor is connected between the at least two first voltage-dividing resistors. In some embodiments, this can serve to protect the first zero-crossing detection port.

[0013] Further, the second zero-crossing detection circuit includes a second diode, the anode of which is connected to the motor; the cathode of which is connected to the second zero-crossing detection port. In some embodiments, the second diode can rectify the input AC power; and / or It also includes a grounding terminal; the second zero-crossing detection circuit further includes at least two second voltage-dividing resistors, which are connected in series between the motor and the grounding terminal. In some embodiments, this can serve to protect the second zero-crossing detection port.

[0014] Furthermore, the cooking cup lid is equipped with a lid trigger, and the lid power switch is located on the cooking cup body. When the cooking cup lid is closed on the cooking cup body, the cooking cup lid trigger activates the lid power switch to close. In some embodiments, this allows for more reliable detection of whether the cooking cup lid is closed.

[0015] This application provides a food processor, including: load; A cooking cup assembly includes a cooking cup body and a cooking cup lid; the cooking cup lid can be closed onto the cooking cup body; The main unit, the blending cup assembly is disposed on the main unit; the load is disposed on the main unit and / or the blending cup body; and The food processor circuit as described in any of the above embodiments.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] Figure 1 The image shown is a perspective view of one embodiment of the food processor of this application; Figure 2 The diagram shown is a schematic diagram of one embodiment of the food processor circuit of this application; Figure 3 The diagram shown is a circuit diagram of one embodiment of the food processor circuit of this application; Figure 4 The diagram shown is a circuit diagram of another embodiment of the food processor circuit of this application; Figure 5 As shown Figure 4 The waveform of the zero-crossing signal output from the output terminal of the second zero-crossing detection circuit of the food processor circuit shown. Detailed Implementation

[0019] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0020] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this application pertains. The use of words such as “a” or “one” in this specification and claims does not indicate a limitation of quantity, but rather indicates the presence of at least one. The use of words such as “comprising” or “including” means that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. The use of words such as “connected” or “linked” is not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0021] To better understand the technical solution of this application, the food processor circuit and food processor of this application will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementation methods can be combined with each other.

[0022] Figure 1 The image shown is a perspective view of one embodiment of the food processor 100 of this application. Figure 2 The diagram shown is a schematic representation of one embodiment of the food processor circuit 13 of this application. See also... Figure 1 and Figure 2 As shown, this application provides a food processor 100, which includes a load 10, a blending cup assembly 11, a main unit 12, and a food processor circuit 13. The food processor circuit 13 can be disposed in the main unit 12 and the blending cup assembly 11. Figure 1 In the embodiment shown, the host 12 is in the form of a base station.

[0023] The blending cup assembly 11 includes a blending cup body 14 and a blending cup lid 15. The blending cup body 14 can be used to hold ingredients, and the ingredients can be blended, heated, etc., within the blending cup body 14. The blending cup lid 15 can be closed onto the blending cup body 14 to prevent the food from splashing out of the blending cup body 14 during food processing. When the blending cup lid 15 is closed onto the blending cup body 14, the load 10 can be in standby mode or in working mode.

[0024] The blending cup assembly 11 is disposed on the main unit 12. The blending cup assembly 11 can be fixedly disposed on the main unit 12 or detachably disposed on the main unit 12. In one embodiment, the blending cup assembly 11 includes an upper coupler 26 (e.g., Figure 3 As shown), host 12 includes a lower coupler 27 (as shown). Figure 3 As shown, when the blending cup assembly 11 is assembled onto the main unit 12, the upper coupler 26 and the lower coupler 27 are connected. In one specific embodiment, both the upper coupler 26 and the lower coupler 27 can be six-pin couplers.

[0025] The load 10 is disposed on the main unit 12 and / or the blending cup 14. The load 10 can be evenly distributed on the main unit 12, evenly distributed on the blending cup 14, or partially distributed on the main unit 12 and partially distributed on the blending cup 14; this application does not impose any limitations. In this embodiment, the load 10 includes a motor 16 and a heating element 17. The motor 16 and the heating element 17 are disposed on the blending cup 14. When the motor 16 is working, it can blend the food contained in the blending cup 14. When the heating element 17 is working, it can heat the food contained in the blending cup 14. In this embodiment, the heating element 17 can be a heating tube.

[0026] In one embodiment, the blending cup assembly 11 further includes a blade assembly (not shown), which is disposed within the blending cup body 14. The blade assembly may be detachably disposed within the blending cup body 14. A motor 16 is connected to the blade assembly and is used to drive the blade assembly to rotate, thereby blending the ingredients.

[0027] Figure 3 The diagram shown is a circuit diagram of one embodiment of the food processor circuit 13 of this application. See also... Figure 1 , Figure 2 and Figure 3 As shown, this application provides a food processor circuit 13, which is applied to a food processor 100. The food processor circuit 13 includes a first power input terminal 18, a second power input terminal 19, a lid power switch 20, a first zero-crossing detection circuit 21, a second zero-crossing detection circuit 22, and a controller 23.

[0028] The first power input terminal 18 and the second power input terminal 19 are used to connect to an AC power source. The AC power source can be mains power. In one embodiment, the first power input terminal 18 is connected to the live wire L, and the second power input terminal 19 is connected to the neutral wire N.

[0029] The lid power switch 20 connects the first power input terminal 18 to the first terminal of the load 10. The second power input terminal 19 is connected to the second terminal of the load 10. When the cooking cup lid 15 is closed on the cooking cup body 14, the lid power switch 20 is closed; when the cooking cup lid 15 is opened, the lid power switch 20 is open. When the lid power switch 20 is open, the first power input terminal 18 and the first terminal of the load 10 are disconnected, thus the load 10 will not operate, improving safety.

[0030] In one embodiment, the cooking cup lid 15 is equipped with a lid trigger (not shown in the figure), and a lid power switch 20 is located on the cooking cup body 14. When the cooking cup lid 15 is closed on the cooking cup body 14, the lid trigger activates the lid power switch 20 to close, thus more reliably detecting whether the cooking cup lid 15 is closed. The lid power switch 20 can be a micro switch, a strong magnetic switch, etc. Correspondingly, when the lid power switch 20 is a micro switch, the cooking cup lid trigger can be a push rod. When the lid power switch 20 is a strong magnetic switch, the cooking cup lid trigger can be a magnetic element.

[0031] In this embodiment, the upper coupler 26 can be connected to the motor 16 and the heating assembly 17. The lower coupler 27 can be connected to the first zero-crossing detection circuit 21 and the second zero-crossing detection circuit 22. When the food preparation cup assembly 11 is assembled on the main unit 12, the upper coupler 26 and the lower coupler 27 are connected to each other to realize the connection between the motor 16, the heating assembly 17 and the first zero-crossing detection circuit 21 and the second zero-crossing detection circuit 22.

[0032] The first zero-crossing detection circuit 21 and the second zero-crossing detection circuit 22 are used to detect the zero-crossing point of the AC power supply. The circuit structure of the first zero-crossing detection circuit 21 may be the same as or different from that of the second zero-crossing detection circuit 22; this application does not impose any restrictions. The input terminals of the first zero-crossing detection circuit 21 and the second zero-crossing detection circuit 22 are connected between the second terminal of the load 10 and the second power input terminal 19.

[0033] The controller 23 includes a first zero-crossing detection port 24 and a second zero-crossing detection port 25. The first zero-crossing detection port 24 is connected to the output of the first zero-crossing detection circuit 21. The second zero-crossing detection port 25 is connected to the output of the second zero-crossing detection circuit 22. The controller 23 determines the open / closed state of the cup lid power switch 20 through the signals from the first zero-crossing detection port 24 and / or the second zero-crossing detection port 25.

[0034] When the cooking cup lid 15 is closed on the cooking cup body 14, the lid power switch 20 is closed, connecting the first power input terminal 18 to the first end of the load 10. This allows the input terminals of both the first zero-crossing detection port 24 and the second zero-crossing detection port 25 to be connected to the first power input terminal 18, and the output terminals of the first zero-crossing detection port 24 and the second zero-crossing detection port 25 to output zero-crossing signals. Both the first zero-crossing detection port 24 and the second zero-crossing detection port 25 of the controller 23 can detect the zero-crossing signals.

[0035] When the cooking cup lid 15 is opened, the lid power switch 20 is disconnected. The first power input terminal 18 and the first terminal of the load 10 are disconnected, so that the inputs of the first zero-crossing detection port 24 and the second zero-crossing detection port 25 are not connected to the first power input terminal 18, and the output terminals of the first zero-crossing detection port 24 and the second zero-crossing detection port 25 do not output zero-crossing signals. The controller 23 cannot detect zero-crossing signals through the first zero-crossing detection port 24 and / or the second zero-crossing detection port 25. Therefore, the controller 23 can determine the open / closed state of the lid power switch 20 through the signals from the first zero-crossing detection port 24 and / or the second zero-crossing detection port 25.

[0036] This application provides a food processor circuit 13, which includes a lid power switch 20, a first zero-crossing detection circuit 21, a second zero-crossing detection circuit 22, and a controller 23. The lid power switch 20 is connected to a first power input terminal 18 and a first terminal of a load 10, and a second power input terminal 19 is connected to a second terminal of the load 10. When the food processor lid 15 is closed on the food processor body 14, the lid power switch 20 is closed. When the food processor lid 15 is opened, the lid power switch 20 is open. Thus, when the food processor lid 15 is open, the load 10 is disconnected from the first power input terminal 18, thereby preventing the load 10 from operating and improving safety. Meanwhile, the input terminals of the first zero-crossing detection circuit 21 and the second zero-crossing detection circuit 22 are connected between the second terminal of the load 10 and the second power input terminal 19. When the cooking cup lid 15 is opened, the zero-crossing signals of the first zero-crossing detection circuit 21 and the second zero-crossing detection circuit 22 are lost. Therefore, the controller 23 determines the open / closed state of the lid power switch 20 through the signals from the first zero-crossing detection port 24 and / or the second zero-crossing detection port 25. This facilitates the determination of the open / closed state of the lid power switch 20. Furthermore, since it does not require series connection with the thermistor NTC, the thermistor NTC has strong anti-interference capabilities, and its temperature detection is not easily affected by interference. Additionally, the temperature inside the cooking cup body 14 can be detected even when the cooking cup lid 15 is open.

[0037] See Figure 3As shown, in one embodiment, the cup lid power switch 20 is connected to the first power input terminal 18, the first terminal of the motor 16, and the first terminal of the heating component 17. Specifically, one end of the cup lid power switch 20 is connected to the first power input terminal 18, and the other end is connected to the first terminal of the motor 16 and the first terminal of the heating component 17.

[0038] The input terminal of the first zero-crossing detection circuit 21 is connected to the second terminal of the heating component 17. Specifically, the input terminal of the first zero-crossing detection circuit 21 is connected between the second terminal of the heating component 17 and the second power input terminal 19. The input terminal of the second zero-crossing detection circuit 22 is connected to the second terminal of the motor 16. Specifically, the input terminal of the second zero-crossing detection circuit 22 is connected between the second terminal of the motor 16 and the second power input terminal 19. When the signal of one of the first zero-crossing detection circuits 21 and 22 is abnormal, it will not affect the signal of the other, thus further improving safety and reliability. Simultaneously, the zero-crossing signal of the zero-crossing detection circuit can also be used to realize the voltage detection of the AC power supply, thus simplifying the circuit. Specifically, the voltage detection of the AC power supply can be achieved through the zero-crossing signal of the second power input terminal 19.

[0039] In one embodiment, the food processor circuit 13 further includes a load switching circuit 28, which is connected to the second power input terminal 19, the motor 16, and the heating element 17. One end of the load switching circuit 28 is connected to the second power input terminal 19, and the other end is connected to both the motor 16 and the heating element 17. The controller 23 includes a first control port 29, which is connected to the load switching circuit 28. The controller 23 controls the load switching circuit 28 through the first control port 29, causing the second power input terminal 19 to switch between the motor 16 and the heating element 17. The second power input terminal 19 can be selectively connected to the motor 16 and the heating element 17 via the load switching circuit 28. The load switching circuit 28 enables the second power input terminal 19 to switch between the motor 16 and the heating element 17, thereby achieving different operating modes.

[0040] The input terminal of the first zero-crossing detection circuit 21 is connected between the motor 16 and the load switching circuit 28. The input terminal of the second zero-crossing detection circuit 22 is connected between the heating component 17 and the load switching circuit 28. When the cup lid power switch 20 is closed, the heating component 17 and the motor 16 can be controlled respectively through the zero-crossing signals of the first zero-crossing detection circuit 21 and the second zero-crossing detection circuit 22, thus ensuring high reliability.

[0041] When the cooking cup lid 15 is closed on the cooking cup body 14, the lid power switch 20 is closed, and the load switching circuit 28 can connect the second power input terminal 19 to the heating component 17. Thus, the input terminal of the first zero-crossing detection circuit 21 is connected between the first power input terminal 18 and the second power input terminal 19, and the input terminal of the second zero-crossing detection circuit 22 is only connected to the first power input terminal 18. The output terminal of the second zero-crossing detection circuit 22 outputs a zero-crossing signal, and the second zero-crossing detection port 25 of the controller 23 can detect the zero-crossing signal and control the heating component 17 through the zero-crossing signal detected by the second zero-crossing detection port 25.

[0042] The load switching circuit 28 allows the second power input terminal 19 to be connected to the motor 16. This connects the input terminal of the second zero-crossing detection circuit 22 between the first power input terminal 18 and the second power input terminal 19. The input terminal of the first zero-crossing detection circuit 21 is only connected to the first power input terminal 18. The input terminal of the first zero-crossing detection circuit 21 outputs a zero-crossing signal. The first zero-crossing detection port 24 of the controller 23 can detect this signal and control the motor 16 using it. Thus, the heating component 17 and the motor 16 can be controlled separately using two zero-crossing signals, resulting in high reliability.

[0043] In one embodiment, the food processor circuit 13 further includes a load drive circuit 30. The load drive circuit 30 is connected to the second power input terminal 19 and the load switching circuit 28. The load drive circuit 30 is used to drive the motor 16 or the heating element 17 to operate.

[0044] The controller 23 includes a second control port 31, which is connected to the load drive circuit 30. When the cup lid power switch 20 is closed, the controller 23 controls the load drive circuit 30 to drive the motor 16 or the heating component 17. The load drive circuit 30 is connected to the second power input terminal 19 and the load switching circuit 28. The load drive circuit 30 can be connected to the motor 16 or the heating component 17 through the load switching circuit 28, thus enabling the motor 16 or the heating component 17 to operate through the load drive circuit 30. The structure is simple.

[0045] In one embodiment, the load drive circuit 30 includes a silicon controlled rectifier (SCR) 1, the control terminal G1 of which is connected to the second control port 31, and the SCR 1 is connected to the second power input terminal 19 and the load switching circuit 28. This method of driving the load 10 is simple and reliable.

[0046] When the cooking cup lid 15 is closed on the cooking cup body 14, the lid power switch 20 is closed, and the load switching circuit 28 can connect the second power input terminal 19 to the heating component 17 through the load drive circuit 30. When the heating component 17 is in standby mode, the input terminals of the first zero-crossing detection circuit 21 and the second zero-crossing detection circuit 22 are both connected to the first power input terminal 18. The first zero-crossing detection port 24 and the second zero-crossing detection port 25 of the controller 23 can both detect the zero-crossing signal.

[0047] When the heating component 17 is in operation, the input terminal of the first zero-crossing detection circuit 21 is connected between the first power input terminal 18 and the second power input terminal 19, the input terminal of the second zero-crossing detection circuit 22 is only connected to the first power input terminal 18, and the output terminal of the second zero-crossing detection circuit 22 outputs a zero-crossing signal. The second zero-crossing detection port 25 of the controller 23 can detect the zero-crossing signal and control the heating component 17 through the zero-crossing signal detected by the second zero-crossing detection port 25.

[0048] When the cooking cup lid 15 is closed on the cooking cup body 14, the lid power switch 20 is closed, and the load switching circuit 28 can connect the second power input terminal 19 to the motor 16 through the load drive circuit 30. When the motor 16 is in standby mode, the input terminals of the first zero-crossing detection circuit 21 and the second zero-crossing detection circuit 22 are both connected to the first power input terminal 18. The first zero-crossing detection port 24 and the second zero-crossing detection port 25 of the controller 23 can both detect the zero-crossing signal.

[0049] When the motor 16 is in operation, the input terminal of the second zero-crossing detection circuit 22 is connected between the first power input terminal 18 and the second power input terminal 19, and the input terminal of the first zero-crossing detection circuit 21 is only connected to the first power input terminal 18. The input terminal of the first zero-crossing detection circuit 21 outputs a zero-crossing signal, and the first zero-crossing detection port 24 of the controller 23 can detect the zero-crossing signal and control the motor 16 through the zero-crossing signal detected by the first zero-crossing detection port 24.

[0050] This allows for the determination of whether the circuit containing motor 16 and heating element 17 is malfunctioning. When the cooking cup lid 15 is closed on the cooking cup body 14, the lid power switch 20 is closed. When the load 10 is in standby mode, if the zero-crossing signal of either the output of the first zero-crossing detection circuit 21 or the input of the second zero-crossing detection circuit 22 is lost, it indicates that there is a problem with the load 10 in the corresponding circuit. In this way, the heating element 17 and motor 16 can be controlled separately through two zero-crossing signals, while simultaneously facilitating the determination of load 10 malfunctions. The implementation method is simple.

[0051] In one embodiment, the load switching circuit 28 includes a switching switch 32. The switching switch 32 can be a switch for a relay RLY. The switching switch 32 includes a moving contact 33, a first stationary contact 34, and a second stationary contact 35. The moving contact 33 is connected to the second power input terminal 19. The first stationary contact 34 is connected to the motor 16 and the first zero-crossing detection circuit 21. The second stationary contact 35 is connected to the heating assembly 17 and the second zero-crossing detection circuit 22. The load switching circuit 28, including the switching switch 32, enables the second power input terminal 19 to switch between the motor 16 and the heating assembly 17, providing high reliability.

[0052] In one embodiment, the food processor circuit 13 includes a power supply circuit 36. The power supply circuit 36 ​​can be a BUCKBOOST circuit. The power supply circuit 36 ​​can be connected to an AC power source (e.g., mains power) to convert AC high voltage into DC power.

[0053] Figure 4 The diagram shown is a circuit diagram of another embodiment of the food processor circuit 13 of this application. See also... Figure 4 As shown, in one embodiment, the food processor circuit 13 includes a DC power supply terminal VCC and a ground terminal GND. The first zero-crossing detection circuit 21 includes a zero-crossing detection transistor Q1, one end of which is connected between the DC power supply terminal VCC and the first zero-crossing detection port 24. The other end of the zero-crossing detection transistor Q1 is connected to the ground terminal GND. The zero-crossing detection transistor Q1 includes a control terminal G2, which is connected to the heating element 17. The first zero-crossing detection circuit 21, including the zero-crossing detection transistor Q1, can improve the accuracy of the zero-crossing signal output by the first zero-crossing detection circuit 21, thereby ensuring precise control of the load 10. The output terminal of the first zero-crossing detection circuit 21 can output a square wave signal. The first zero-crossing detection port 24 of the controller 23 can detect the zero-crossing signal, and the motor 16 is controlled by the zero-crossing signal detected by the first zero-crossing detection port 24, thereby ensuring precise control of the motor 16.

[0054] In one embodiment, the first zero-crossing detection circuit 21 includes a first diode D1, the anode of which is connected to the heating assembly 17, and the cathode of which is connected to the control terminal G2 of the zero-crossing detection transistor Q1. The first diode D1 can rectify the input AC power.

[0055] In one embodiment, the first zero-crossing detection circuit 21 further includes at least two first voltage-dividing resistors R1, R2, and R3. The at least two first voltage-dividing resistors R1 are connected in series between the heating component 17 and the ground terminal GND. The control terminal G1 of the zero-crossing detection transistor Q1 is connected between the at least two first voltage-dividing resistors. This can protect the first zero-crossing detection port 24.

[0056] Figure 5 As shown Figure 4 The waveform of the zero-crossing signal output from the output terminal of the second zero-crossing detection circuit 22 of the food processor circuit 13 shown. (See also...) Figure 4 and Figure 5 As shown, in one embodiment, the second zero-crossing detection circuit 22 includes a second diode D2, the anode of which is connected to the motor 16. The cathode of the second diode D2 is connected to the second zero-crossing detection port 25. The second diode D2 can rectify the input AC power.

[0057] In one embodiment, the second zero-crossing detection circuit 22 further includes at least two second voltage divider resistors R4, R5, and R6, which are connected in series between the motor 16 and the ground terminal GND. This serves to protect the second zero-crossing detection port 25.

[0058] The output of the second zero-crossing detection circuit 22 can output a steam bun wave signal (e.g., Figure 5 (As shown). The second zero-crossing detection port 25 of the controller 23 can detect the zero-crossing signal. The heating component 17 is controlled by the zero-crossing signal detected by the second zero-crossing detection port 25. The higher the AC voltage, that is, the higher the mains voltage, the higher the steam wave, and the larger the corresponding integral value. Thus, the current mains voltage value can be obtained from the integral value of the steam wave. Therefore, the mains voltage can be detected by the second zero-crossing detection circuit 22. The detection method is simple and reliable.

[0059] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A food processor circuit, characterized in that, Applied to a food processor (100), the food processor (100) includes a food processor cup assembly (11) and a load (10), the food processor cup assembly (11) includes a food processor cup body (14) and a food processor cup lid (15); the food processor cup lid (15) can cover the food processor cup body (14); the food processor circuit includes: The first power input terminal (18) and the second power input terminal (19) are used to connect to an AC power source; A cup lid power switch (20) is connected to the first power input terminal (18) and the first end of the load (10); a second power input terminal (19) is connected to the second end of the load (10); when the cooking cup lid (15) is closed on the cooking cup body (14), the cup lid power switch (20) is closed, and when the cooking cup lid (15) is opened, the cup lid power switch (20) is open; A first zero-crossing detection circuit (21) and a second zero-crossing detection circuit (22) are used to detect the zero-crossing point of the AC power supply; the input terminal of the first zero-crossing detection circuit (21) and the input terminal of the second zero-crossing detection circuit (22) are connected between the second terminal of the load (10) and the second power supply input terminal (19); and The controller (23) includes a first zero-crossing detection port (24) and a second zero-crossing detection port (25). The first zero-crossing detection port (24) is connected to the output terminal of the first zero-crossing detection circuit (21). The second zero-crossing detection port (25) is connected to the output terminal of the second zero-crossing detection circuit (22). The controller (23) determines the opening and closing state of the cup lid power switch (20) through the signals from the first zero-crossing detection port (24) and / or the second zero-crossing detection port (25).

2. The food processor circuit according to claim 1, characterized in that, The load (10) includes a motor (16) and a heating component (17), and the cup lid power switch (20) is connected to the first power input terminal (18), the first end of the motor (16) and the first end of the heating component (17); The input terminal of the first zero-crossing detection circuit (21) is connected to the second terminal of the heating component (17); the input terminal of the second zero-crossing detection circuit (22) is connected to the second terminal of the motor (16).

3. The food processor circuit according to claim 2, characterized in that, The food processor circuit also includes a load switching circuit (28), which is connected to the second power input terminal (19), the motor (16), and the heating element (17); the controller (23) includes a first control port (29), which is connected to the load switching circuit (28); the controller (23) controls the load switching circuit (28) through the first control port (29) to switch the second power input terminal (19) between the motor (16) and the heating element (17); The input terminal of the first zero-crossing detection circuit (21) is connected between the motor (16) and the load switching circuit (28); the input terminal of the second zero-crossing detection circuit (22) is connected between the heating component (17) and the load switching circuit (28).

4. The food processor circuit according to claim 3, characterized in that, The food processor circuit also includes a load drive circuit (30); the load drive circuit (30) is connected to the second power input terminal (19) and the load switching circuit (28); the load drive circuit (30) is used to drive the motor (16) or the heating component (17) to work; The controller (23) includes a second control port (31), which is connected to the load drive circuit (30). When the cup lid power switch (20) is closed, the controller (23) controls the load drive circuit (30) to drive the motor (16) or the heating component (17) to work.

5. The food processor circuit according to claim 3, characterized in that, The load switching circuit (28) includes a switching switch (32); the switching switch (32) includes a moving contact (33), a first stationary contact (34) and a second stationary contact (35); the moving contact (33) is connected to the second power input terminal (19); the first stationary contact (34) is connected to the motor (16) and the first zero-crossing detection circuit (21); the second stationary contact (35) is connected to the heating component (17) and the second zero-crossing detection circuit (22).

6. The food processor circuit according to claim 2, characterized in that, The food processor circuit includes a DC power supply terminal and a ground terminal; the first zero-crossing detection circuit (21) includes a zero-crossing detection transistor, one end of which is connected between the DC power supply terminal and the first zero-crossing detection port (24); the other end of which is connected to the ground terminal; the zero-crossing detection transistor includes a control terminal, which is connected to the heating component (17).

7. The food processor circuit according to claim 6, characterized in that, The first zero-crossing detection circuit (21) includes a first diode, the anode of which is connected to the heating assembly (17); the cathode of which is connected to the control terminal of the zero-crossing detection transistor; and / or The first zero-crossing detection circuit (21) further includes at least two first voltage divider resistors, which are connected in series between the heating component (17) and the ground terminal, and the control terminal of the zero-crossing detection transistor is connected between the at least two first voltage divider resistors.

8. The food processor circuit according to claim 2, characterized in that, The second zero-crossing detection circuit (22) includes a second diode, the anode of which is connected to the motor (16); the cathode of which is connected to the second zero-crossing detection port (25); and / or It also includes a ground terminal; the second zero-crossing detection circuit (22) also includes at least two second voltage divider resistors, which are connected in series between the motor (16) and the ground terminal.

9. The food processor circuit according to claim 1, characterized in that, The cooking cup lid (15) is provided with a lid trigger and the lid power switch (20) is provided on the cooking cup body (14). When the cooking cup lid (15) is closed on the cooking cup body (14), the cooking cup lid trigger triggers the lid power switch (20) to close.

10. A food processor, characterized in that, include: Load (10); The cooking cup assembly (11) includes a cooking cup body (14) and a cooking cup lid (15); the cooking cup lid (15) can be closed onto the cooking cup body (14). Main unit (12), the cooking cup assembly is disposed on the main unit; the load is disposed on the main unit and / or the cooking cup body; and The food processor circuit (13) as described in any one of claims 1-9.

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