Food processor circuit and food processor comprising same

Abstract

The utility model provides a food processor circuit and a food processor comprising the same. The food processor comprises a cup body, a cup cover capable of covering the cup body, a first load and a second load. The food processor circuit comprises an isolation power supply end, a grounding end, a cup cover switch, an isolation circuit, a load change-over switch and a controller. The input end of the isolating circuit and the cup cover switch are connected in series between the isolating power supply end and the grounding end, and the isolating circuit is switched on when the cup cover switch is switched on and switched off when the cup cover switch is switched off. The load change-over switch is connected with the first load and the second load, is switched between the first load and the second load, and is connected with the output end of the isolation circuit. The controller comprises a detection port and a driving port. The detection port and the driving port are both connected with the output end of the isolation circuit, and the controller detects the on-off state of the isolation circuit through the detection port so as to detect the on-off state of the cup cover switch and controls the load change-over switch through the driving port. After the cup cover is closed, the load change-over switch can be driven to work, so that the safety is improved.

Description

Technical Field

[0001] The present application relates to the technical field of small household appliances, and in particular to a food processor circuit and a food processor including the same. Background Art

[0002] With the improvement of living standards, many different types of food processors have appeared on the market. The functions of food processors may mainly include, but are not limited to, making soy milk, squeezing juice, making rice paste, mincing meat, shaving ice, making coffee and / or preparing facial masks.

[0003] For the safety of users, the load (e.g., motor) of the food processor can only be driven to work when the cup lid is closed. Therefore, it is necessary to detect the open and closed state of the cup lid of the food processor. The controllers of some food processors detect the state of the cup lid and control the work of the load through the same port. In this way, when the load is controlled to work, the cup lid cannot be detected, which brings safety hazards. Utility Model Content

[0004] The present application provides a food processor circuit with high safety and a food processor including the same.

[0005] The present application provides a food processor circuit, which is applied to a food processor. The food processor includes a cup body, a cup cover that can cover the cup body, a first load and a second load. The food processor circuit includes:

[0006] Isolate the power supply terminal and the ground terminal;

[0007] A cup cover switch, which is turned on when the cup cover is closed and is turned off when the cup cover is opened;

[0008] an isolation circuit, wherein an input end of the isolation circuit and the cup cover switch are connected in series between the isolation power supply end and the ground end, and the isolation circuit is turned on when the cup cover switch is turned on, and is turned off when the cup cover switch is turned off;

[0009] a load switching switch connected to the first load and the second load, switching between the first load and the second load, and connected to an output end of the isolation circuit; and

[0010] The controller includes a detection port and a drive port, both of which are connected to the output end of the isolation circuit. The controller detects the on-off of the isolation circuit through the detection port to detect the on-off of the cup cover switch, and controls the load switching switch through the drive port.

[0011] In some embodiments, the cup cover switch is turned on when the cup cover is closed and is turned off when the cup cover is opened. The isolation circuit is turned on when the cup cover switch is turned on and is turned off when the cup cover switch is turned off. The load switching switch is connected to the output end of the isolation circuit. The detection port and the drive port of the controller are both connected to the output end of the isolation circuit. In this way, the drive port will not affect the detection of the detection port. When the drive port controls the load switching switch to control the load, the controller can also detect the state of the cup cover, thereby improving safety. And when the cup cover is opened, the isolation circuit is disconnected, and the drive port cannot drive the load switching switch to work, thereby improving the safety of the food processor.

[0012] Optionally, the isolation circuit includes an optocoupler, the primary of the optocoupler and the cup lid switch are connected in series between the isolated power supply terminal and the ground terminal, the optocoupler is turned on when the cup lid switch is turned on, and is turned off when the cup lid switch is turned off; the load switching switch is connected to the secondary of the optocoupler.

[0013] In some embodiments, the optocoupler can isolate the cup lid switch circuit from the load switching switch circuit to improve the safety of the food processor circuit.

[0014] Optionally, the food processor circuit includes a non-isolated power supply terminal and a non-isolated ground terminal, and the secondary of the optocoupler includes a first output terminal and a second output terminal, the first output terminal is connected to the non-isolated power supply terminal and connected to the detection port and the drive port, and the second output terminal is connected to the non-isolated ground terminal and the load switching switch.

[0015] In some embodiments, the detection port detects the on / off status of the cup cover switch through the level of the first output terminal. When the optical coupler is cut off, the driving port cannot drive the load switching switch, thereby improving the safety of the food processor.

[0016] Optionally, the food processor circuit includes a first voltage-dividing resistor, the first voltage-dividing resistor is connected to the non-isolated power supply end and the first output end, and the detection port is connected between the first voltage-dividing resistor and the first output end.

[0017] In some embodiments, the first voltage-dividing resistor plays a role of voltage division to prevent the potential of the detection port from being too high, thereby protecting the detection port from being burned out.

[0018] Optionally, the food processor circuit includes a second voltage-dividing resistor, wherein the second voltage-dividing resistor is connected to the second output terminal and the non-isolated ground terminal, and the load switching switch is connected between the second output terminal and the second voltage-dividing resistor.

[0019] In some embodiments, the second voltage-dividing resistor plays a voltage-dividing role to prevent the voltage of the load switching switch from being too high, thereby protecting the load switching switch.

[0020] Optionally, the food processor circuit includes a diode, the anode of the diode is connected to the drive port, and the cathode of the diode is connected to the output end of the isolation circuit.

[0021] In some embodiments, the diode is unidirectionally conducted, which can prevent a large current from being input into the driving port, thereby protecting the driving port.

[0022] Optionally, the food processor circuit includes a non-isolated power supply terminal, a non-isolated ground terminal and a transistor, the base of the transistor is connected to the output terminal of the isolation circuit, and the emitter and collector of the transistor are connected in series with the load switching switch between the non-isolated power supply terminal and the non-isolated ground terminal.

[0023] In some embodiments, the on / off of the load switching switch and the non-isolated power supply terminal is controlled by a transistor, and the circuit is simple.

[0024] Optionally, the food processor circuit includes a drive circuit, the controller includes a control port, the drive circuit is connected to the load switching switch, and the controller controls the drive circuit to drive the first load or the second load through the control port.

[0025] In some embodiments, the controller drives the first load or the second load through the driving circuit to improve the safety of the circuit.

[0026] Optionally, the food processor circuit includes a first current limiting resistor connected between the detection port and the output end of the isolation circuit.

[0027] In some embodiments, the first current limiting resistor plays a role of current limiting and can protect the detection port.

[0028] Optionally, the food processor circuit includes a second current limiting resistor connected between the drive port and the output end of the isolation circuit.

[0029] In some embodiments, the second current limiting resistor plays a current limiting role and can protect the driving port.

[0030] The present application also provides a food processor, comprising:

[0031] Cup body;

[0032] A cup cover, which can cover the cup body;

[0033] a first load and a second load; and

[0034] The food processor circuit as described in any one of the above items is connected to the first load and the second load.

[0035] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0037] Figure 1 Shown is a schematic structural diagram of an embodiment of a food processor of the present application.

[0038] Figure 2 Shown Figure 1 A partial circuit block diagram of an embodiment of a food processor is shown.

[0039] Figure 3 Shown Figure 1 A partial circuit diagram of an embodiment of a food processor is shown.

[0040] Figure 4 Shown Figure 1 A partial circuit diagram of another embodiment of a food processor is shown. DETAILED DESCRIPTION

[0041] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate that there is at least one. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect.

[0043] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0044] The food processor of the embodiment of the present application includes a cup body, a cup cover that can be covered on the cup body, a first load and a second load. The food processor circuit includes an isolated power supply terminal and a ground terminal, a cup cover switch, an isolation circuit, a load switching switch, and a controller. The cup cover switch is turned on when the cup cover is closed, and is disconnected when the cup cover is opened. The input end of the isolation circuit and the cup cover switch are connected in series between the isolated power supply terminal and the ground terminal, and the isolation circuit is turned on when the cup cover switch is turned on, and is disconnected when the cup cover switch is disconnected. The load switching switch is connected to the first load and the second load, switches between the first load and the second load, and is connected to the output end of the isolation circuit. The controller includes a detection port and a drive port. The detection port and the drive port are both connected to the output end of the isolation circuit. The controller detects the on-off of the isolation circuit through the detection port to detect the on-off of the cup cover switch, and controls the load switching switch through the drive port. In the present application, the load switching switch can only be driven to work after the cup cover is closed, thereby improving safety.

[0045] The present application provides a food processor circuit and a food processor including the same. The food processor circuit and the food processor including the same are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0046] Figure 1 FIG. 1 is a schematic diagram of the structure of an embodiment of a food processor 10 of the present application. Figure 1 As shown, the food processor 10 includes: a cup body 11, a cup cover 12, a first load 13 and a second load 14. The cup body 11 can hold ingredients for cooking. The cup cover 12 can cover the cup body 11. When the food processor 10 is working, the cup cover 12 is covered on the cup body 11. After the food processor 10 is finished working, the cup cover 12 can be removed from the cup body 11. In some implementations, during the cooking process of the food processor 10, the cup cover 12 can be opened to add ingredients. In one embodiment, the cup cover 12 can be screwed into the cup body 11, and when it is rotated into place, the cup cover 12 covers the cup body 11. In another embodiment, the cup cover 12 can be covered from top to bottom into place, and the cup cover 12 covers the cup body 11. In one embodiment, the cup cover 12 is detachably assembled to the cup body 11 and can be separated from the cup body 11. In another embodiment, the cup cover 12 is hinged to the cup body 11. The cup cover 12 can isolate the food contained in the cup body 11 from the outside world to prevent the food from being contaminated, and can also prevent the food from overflowing from the cup body 11 during the cooking process. In some embodiments, the food in the cup body 11 can be cooked only after the cup cover 12 is covered on the cup body 11. The first load 13 and the second load 14 are arranged at the bottom of the cup body 11. In some embodiments, the first load 13 includes a heating plate for heating the food in the cup body 11. The second load 14 includes a motor for driving a device such as a stirring knife or a stirring rod to cook the food. The food processor 10 also includes a host 15. In some embodiments, the host 15 is in the form of a machine base. The host 15 can provide electrical energy, control and drive the food processor 10 to work, and can interact with the user. The cup body 11 can be assembled on the host 15. In some embodiments, the cup body 11 can be detachably mounted on the host 15. When the cup body 11 is mounted on the host 15, the host 15 can control the food processor 10 to cook, such as whipping and heating the food. Figure 1 This is only an exemplary embodiment of the food processor, and the present application is not limited to Figure 1 The food processor shown may be other types of food processors.

[0047] Figure 2 Shown Figure 1 A partial circuit block diagram of an embodiment of a blender 10 is shown. Figure 3 Shown Figure 1A partial circuit diagram of an embodiment of a food processor 10 is shown. The food processor 10 includes a food processor circuit 20. The food processor circuit 20 is applied to the food processor 10. The food processor circuit 20 is connected to a first load 13 and a second load 14, and is used to drive the first load 13 or the second load 14 to work.

[0048] The food processor circuit 20 includes: an isolated power supply terminal VCC1 and a ground terminal GND1 , a cup cover switch 23 , an isolation circuit 24 , a load switching switch 25 and a controller 26 .

[0049] The cup cover switch 23 is turned on when the cup cover 12 is closed, and is turned off when the cup cover 12 is opened. In some embodiments, the cup cover switch 23 includes an induction switch. The induction switch is arranged on the cup body 11. The cup body 11 includes an induction trigger. When the cup cover 12 is closed, the induction trigger is located in the induction area of ​​the induction switch, so that the induction switch is closed. When the cup cover 12 is opened, the induction trigger is outside the induction area of ​​the induction switch, and the induction switch is opened. In one embodiment, the cup cover switch 23 includes a magnetically controlled switch.

[0050] In some embodiments, the cup cover switch 23 comprises a micro switch. In other embodiments, the cup cover switch 23 comprises a safety link switch.

[0051] The input end of the isolation circuit 24 and the cup cover switch 23 are connected in series between the isolation power supply end VCC1 and the ground end GND1. The isolation circuit 24 is turned on when the cup cover switch 23 is turned on, and is turned off when the cup cover switch 23 is turned off. The isolation power supply end VCC1 can output isolation power, such as 12V isolation power, which can supply power to the input end of the isolation circuit 24 and the cup cover switch 23. The isolation circuit 24 has a good isolation effect on the input and output electrical signals, and is used to isolate the cup cover switch 23 and the load switching switch 25, which can improve the safety of the food processor circuit 20. Specifically, the cup cover switch 23 includes a first end 231 and a second end 232. The input end of the isolation circuit 24 is connected to the first end 231, and the ground end GND1 is connected to the second end 232.

[0052] The load switching switch 25 is connected to the first load 13 and the second load 14. It switches between the first load 13 and the second load 14, and is connected to the output end of the isolation circuit 24. The load switching switch 25 switches between the first load 13 and the second load 14, and is used to control the first load 13 or the second load 14 to access the power supply. When the cup cover switch 23 is turned on, the isolation circuit 24 is turned on, the load switching switch 25 is turned on, and the load switching switch 25 can be controlled to switch between the first load 13 and the second load 14. When the cup cover switch 23 is disconnected, the isolation circuit 24 is disconnected, the load switching switch 25 is disconnected, and the load switching switch 25 cannot be controlled to switch between the first load 13 and the second load 14. In this way, when the cup cover switch 23 is disconnected, the load switching switch 25 cannot be operated, and the first load 13 and the second load 14 cannot be switched.

[0053] The controller 26 includes a detection port CUP and a drive port RLY. The detection port CUP and the drive port RLY are both connected to the output end of the isolation circuit 24. The controller 26 detects the on-off of the isolation circuit 24 through the detection port CUP to detect the on-off of the cup cover switch 23, and controls the load switching switch 25 through the drive port RLY. The detection port CUP is connected to the output end of the isolation circuit 24. When the cup cover switch 23 is turned on, the isolation circuit 24 is turned on, and the detection port CUP is a low level. When the cup cover switch 23 is disconnected, the isolation circuit 24 is disconnected, and the detection port CUP is a high level. The controller 26 detects the on-off of the cup cover switch 23 according to the level of the detection port CUP to obtain whether the cup cover 12 is covered on the cup body 11. The drive port RLY is connected to the output end of the isolation circuit 24. When the cup cover switch 23 is turned on, the isolation circuit 24 is turned on, and the controller 26 drives the load switching switch 25 to work through the drive port RLY. When the cup cover switch 23 is disconnected, the isolation circuit 24 is disconnected, the circuit between the drive port RLY and the load switching switch 25 is broken, and the controller 26 cannot drive the load switching switch 25 to work through the drive port RLY. The state of the cup cover switch 23 and the state of the load switching switch 25 are shown in Table 1. In this way, the drive port RLY will not affect the detection of the detection port CUP. When the drive port RLY controls the load switching switch 25 to control the load to work, the detection port CUP can still detect the state of the cup cover switch 23, thereby improving safety. And when the cup cover 12 does not cover the cup body 11, since the isolation circuit 24 is disconnected, the controller 26 cannot drive the load switching switch 25 to work through the drive port RLY. Only when the cup cover 12 is covered and the controller 26 outputs the correct drive signal, the load switching switch 25 can work, which ensures the correct operation of the load switching switch 25 from both hardware and software aspects, and improves the safety of the food processor circuit 20.

[0054]

[0055] Table 1

[0056] In some embodiments, the isolation circuit 24 includes an optocoupler U1. The primary of the optocoupler U1 and the cup cover switch 23 are connected in series between the isolated power supply terminal VCC1 and the ground terminal GND1. The optocoupler U1 is turned on when the cup cover switch 23 is turned on, and is turned off when the cup cover switch 23 is turned off. The load switching switch 25 is connected to the secondary of the optocoupler U1. The primary of the optocoupler U1 includes a light emitting diode D. The positive electrode of the light emitting diode D is connected to the isolated power supply terminal VCC1, and the negative electrode of the light emitting diode D is connected to the ground terminal GND1 through the cup cover switch 23. The secondary of the optocoupler includes a phototransistor Q. The phototransistor Q is connected to the load switching switch 25. When the cup cover switch 23 is turned on, the light emitting diode D is turned on and generates a light signal, and the phototransistor Q receives the light signal and turns on. When the cup cover switch 23 is turned off, the light emitting diode D is turned off, the light signal disappears, and the phototransistor Q is turned off, so that the load switching switch 25 is disconnected. The optical coupler U1 can isolate the circuit where the cup cover switch 23 is located from the circuit where the load switching switch 25 is located, thereby improving the safety of the food processor circuit 20. The electrical signal is isolated by the optical coupler U1, and the cost is low.

[0057] In some embodiments, the food processor circuit 20 includes a non-isolated power supply terminal VCC2 and a non-isolated ground terminal GND2. The non-isolated power supply terminal VCC2 and the non-isolated ground terminal GND2 provide non-isolated electricity, such as 5V non-isolated electricity, to power the secondary of the optocoupler U1. The secondary of the optocoupler U1 includes a first output terminal Q1 and a second output terminal Q2. The first output terminal Q1 is connected to the non-isolated power supply terminal VCC2, and is connected to the detection port CUP and the drive port RLY. The second output terminal Q2 is connected to the non-isolated ground terminal GND2 and the load switching switch 25. The controller 26 detects the level of the first output terminal Q1 through the detection port CUP to determine whether the cup cover switch 23 is closed. When the cup cover switch 23 is closed, the optocoupler U1 is turned on, and the first output terminal Q1 outputs a low level. When the cup cover switch 23 is disconnected, the optocoupler U1 is turned off, and the first output terminal Q1 outputs a high level. In this way, the detection port CUP detects the on and off of the cup cover switch 23 through the level of the first output terminal Q1. When the optical coupler U1 is turned off, the first output terminal Q1 outputs a high level, and the driving port RLY cannot drive the load switching switch 25 , thereby improving the safety of the food processor 10 .

[0058] In some embodiments, the food processor circuit 20 includes a first voltage-dividing resistor R508. The first voltage-dividing resistor R508 is connected to the non-isolated power supply terminal VCC2 and the first output terminal Q1, and the detection port CUP is connected between the first voltage-dividing resistor R508 and the first output terminal Q1. When the optical coupler U1 is turned on, the first output terminal Q1 outputs a low level, and the potential of the detection port CUP is the voltage drop of the first voltage-dividing resistor R508. The first voltage-dividing resistor R508 plays a voltage-dividing role to prevent the potential of the detection port CUP from being too high, and can protect the detection port CUP from being burned out, thereby protecting the controller 26.

[0059] In some embodiments, the food processor circuit 20 includes a second voltage-dividing resistor R216. The second voltage-dividing resistor R216 is connected to the second output terminal Q2 and the non-isolated ground terminal GND2. The load switching switch 25 is connected between the second output terminal Q2 and the second voltage-dividing resistor R216. When the optocoupler U1 is turned on, the second output terminal Q2 outputs a low level, ignoring the voltage drop of the optocoupler U1, the voltage allocated to the load switching switch 25 is the same as the voltage of the first voltage-dividing resistor R508, and the second voltage-dividing resistor R216 is connected in series with the first voltage-dividing resistor R508 and the secondary of the optocoupler U1 between the non-isolated power supply terminal VCC2 and the non-isolated ground terminal GND2, and the second voltage-dividing resistor R216 can share the voltage of the first voltage-dividing resistor R508. The second voltage-dividing resistor R216 plays a voltage-dividing role to prevent the voltage of the load switching switch 25 from being too high, and can protect the load switching switch 25.

[0060] In some embodiments, the food processor circuit 20 includes a diode D204, the anode of the diode D204 is connected to the driving port RLY, and the cathode of the diode D204 is connected to the output end of the isolation circuit 24. The diode D204 is unidirectionally conducted, which can block the low level output by the driving port RLY and prevent the driving port RLY from inputting a large current, thereby protecting the driving port RLY.

[0061] In some embodiments, the food processor circuit 20 includes a transistor Q201, the base of the transistor Q201 is connected to the output end of the isolation circuit 24, and the emitter and collector of the transistor Q201 are connected in series with the load switching switch 25 between the non-isolated power supply terminal VCC2 and the non-isolated ground terminal GND2. The on-off of the load switching switch 25 can be controlled by controlling the on-off of the transistor Q201. When the isolation circuit 24 is turned on, the driving port RLY outputs a high level, the transistor Q201 is turned on, the load switching switch 25 is turned on with the non-isolated power supply terminal VCC2 and the non-isolated ground terminal GND2, and the non-isolated power supply terminal VCC2 and the non-isolated ground terminal GND2 can supply power to the load switching switch 25. When the isolation circuit 24 is disconnected or the driving port RLY outputs a low level, the transistor Q201 is disconnected, and the load switching switch 25 is disconnected. The on-off of the load switching switch 25 and the non-isolated power supply terminal VCC2 is controlled by the transistor Q201, and the circuit is simple.

[0062] In some embodiments, the food processor circuit 20 includes a driving circuit 29, the controller 26 includes a control port TRI, the driving circuit 29 is connected to the load switching switch 25, and the controller 26 controls the driving circuit 29 to drive the first load 13 or the second load 14 through the control port TRI. The food processor circuit 20 includes an L line and an N line. The driving circuit 29, the load switching switch 25, and the first load 13 or the second load 14 are connected in series between the L line and the N line. The driving circuit 29 is used to drive the first load 13 or the second load 14. When the load switching switch 25 switches to the first load 13, the controller 26 controls the driving circuit 29 to drive the first load 13 through the control port TRI. When the load switching switch 25 switches to the second load 14, the controller 26 controls the driving circuit 29 to drive the second load 14 through the control port TRI.

[0063] In one embodiment, the load switching switch 25 includes a relay. The relay includes a moving contact K1, a normally open contact K2, and a normally closed contact K3. The moving contact K1 is connected to the drive circuit 29, the normally open contact K2 is connected to the second load 14, and the normally closed contact K3 is connected to the first load 13. Specifically, the first load 13 includes a first end 131 and a second end 132. The second load 14 includes a first end 141 and a second end 142. The first end 131 is connected to the normally closed contact K3 of the relay, the second end 132 is connected to the L line, the first end 141 is connected to the normally open contact K2 of the relay, and the second end 142 is connected to the L line.

[0064] In one embodiment, the driving circuit 29 includes a thyristor SCR, and the control port TRI is connected to a controlled end of the thyristor SCR. The on and off of the thyristor SCR is controlled by controlling the level of the controlled end of the thyristor SCR.

[0065] The controller 26 drives the first load 13 or the second load 14 through the driving circuit 29, which can improve the safety of the circuit.

[0066] Figure 4 Shown Figure 1 A partial circuit diagram of another embodiment of a food processor 10 is shown.

[0067] In some embodiments, the food processor circuit 20 includes a first current limiting resistor R208 connected between the detection port CUP and the output end of the isolation circuit 24. The first current limiting resistor R208 has a current limiting function, which can prevent the current of the detection port CUP from being too large and protect the detection port CUP.

[0068] In some embodiments, the food processor circuit 20 includes a second current limiting resistor R207 connected between the driving port RLY and the output end of the isolation circuit 24. The second current limiting resistor R207 has a current limiting function, which can prevent the current of the driving port RLY from being too large and protect the driving port RLY.

[0069] In some embodiments, the food processor circuit 20 includes a diode D203, which plays a freewheeling role. The food processor circuit 20 also includes a transistor Q202, which is connected to the control port TRI and the thyristor SCR. The controller 26 controls the on and off of the transistor Q202 through the control port TRI, thereby controlling the on and off of the thyristor SCR.

[0070] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0071] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A food processor circuit, applied to a food processor (10), characterized in that: The food processor (10) comprises a cup body (11), a cup cover (12) that can cover the cup body (11), a first load (13) and a second load (14), and the food processor circuit (20) comprises: Isolate the power supply terminal and the ground terminal; a cup cover switch (23), which is turned on when the cup cover (12) is closed, and is turned off when the cup cover (12) is opened; an isolation circuit (24), wherein an input end of the isolation circuit (24) and the cup cover switch (23) are connected in series between the isolation power supply end and the ground end, and the isolation circuit (24) is turned on when the cup cover switch (23) is turned on, and is turned off when the cup cover switch (23) is turned off; a load switching switch (25), connected to the first load (13) and the second load (14), switching between the first load (13) and the second load (14), and connected to an output end of the isolation circuit (24); and The controller (26) comprises a detection port and a drive port, wherein the detection port and the drive port are both connected to the output end of the isolation circuit (24). The controller (26) detects the on-off state of the isolation circuit (24) through the detection port to detect the on-off state of the cup cover switch (23), and controls the load switching switch (25) through the drive port.

2. The food processor circuit according to claim 1, characterized in that: The isolation circuit (24) comprises an optocoupler, the primary of the optocoupler and the cup cover switch (23) are connected in series between the isolation power supply terminal and the ground terminal, the optocoupler is turned on when the cup cover switch (23) is turned on, and is turned off when the cup cover switch (23) is turned off; the load switching switch (25) is connected to the secondary of the optocoupler.

3. The food processor circuit according to claim 2, characterized in that: The food processor circuit (20) comprises a non-isolated power supply terminal and a non-isolated ground terminal, and the secondary of the optical coupler comprises a first output terminal and a second output terminal, the first output terminal is connected to the non-isolated power supply terminal and the detection port and the drive port, and the second output terminal is connected to the non-isolated ground terminal and the load switching switch (25).

4. The food processor circuit according to claim 3, characterized in that: The food processor circuit (20) comprises a first voltage-dividing resistor, wherein the first voltage-dividing resistor is connected to the non-isolated power supply end and the first output end, and the detection port is connected between the first voltage-dividing resistor and the first output end.

5. The food processor circuit according to claim 3, characterized in that: The food processor circuit (20) comprises a second voltage-dividing resistor, the second voltage-dividing resistor is connected to the second output terminal and the non-isolated ground terminal, and the load switching switch (25) is connected between the second output terminal and the second voltage-dividing resistor.

6. The food processor circuit according to claim 1, characterized in that: The food processor circuit (20) comprises a diode, the anode of the diode is connected to the drive port, and the cathode of the diode is connected to the output end of the isolation circuit (24).

7. The food processor circuit according to claim 1, characterized in that: The food processor circuit (20) comprises a non-isolated power supply terminal, a non-isolated ground terminal and a transistor, the base of the transistor is connected to the output terminal of the isolation circuit (24), and the emitter and collector of the transistor and the load switching switch (25) are connected in series between the non-isolated power supply terminal and the non-isolated ground terminal.

8. The food processor circuit according to claim 1, characterized in that: The food processor circuit (20) comprises a drive circuit (29), the controller (26) comprises a control port, the drive circuit (29) is connected to the load switching switch (25), and the controller (26) controls the drive circuit (29) to drive the first load (13) or the second load (14) through the control port.

9. The food processor circuit according to claim 1, characterized in that: The food processor circuit (20) comprises a first current limiting resistor connected between the detection port and the output end of the isolation circuit (24); and / or The food processor circuit (20) comprises a second current limiting resistor connected between the drive port and the output end of the isolation circuit (24).

10. A food processor, characterized in that: include: Cup body (11); A cup cover (12), which can cover the cup body (11); A first load (13) and a second load (14); and The food processor circuit (20) according to any one of claims 1 to 9, connected to the first load (13) and the second load (14).

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