CN218246966U - Food processor control circuit and food processor - Google Patents

Abstract

The application provides a cooking machine control circuit and cooking machine. The food processor control circuit comprises a power input end, a switch circuit, a coupler, a detection circuit and a controller. The coupler comprises a cup cover signal terminal, a grounding terminal and a detection terminal. The detection circuit is electrically connected with the detection terminal and the grounding terminal and is used for detecting the resistance value between the detection terminal and the grounding terminal and generating a first electric signal. The controller comprises a first detection port, a second detection port and a control port, the first detection port is electrically connected with the detection circuit, the second detection port is electrically connected with the cup cover signal terminal, and the control port is electrically connected with the switch circuit. The controller detects a second electric signal of the cup cover signal terminal through the second detection port, detects a first electric signal through the first detection port, determines the opening and closing state of the cup cover assembly according to the first electric signal and the second electric signal, and controls the switch circuit to be switched on through the control port if the cup cover assembly is closed. The circuit of this application reliability is high.

Description

Food processor control circuit and food processor

Technical Field

The application relates to the field of small household appliances, in particular to a food processor control circuit and a food processor.

Background

With the increasing living standard of people, many different types of food processors appear on the market. The functions of the food processor mainly include, but are not limited to, functions of making soybean milk, squeezing fruit juice, making rice paste, mincing meat, shaving ice, making coffee and/or blending facial masks and the like. The food processor can comprise a soybean milk machine, a stirrer or a wall breaking food processor and other machines for crushing and stirring food materials.

At present, after a food processor detects that a cup cover is covered, the food processor is started. However, if the coupler of the food processor is stained with water, the food processor is judged to be covered by the cup cover by mistake, and the machine is started to generate a safety risk.

SUMMERY OF THE UTILITY MODEL

The application provides a high cooking machine control circuit and cooking machine of security.

The application provides a cooking machine control circuit for cooking machine, cooking machine includes that host computer, detachably locate the cup body assembly of host computer and can cover in cup body assembly's bowl cover subassembly, cooking machine control circuit includes:

the power supply input end is used for connecting an external power supply;

the switch circuit is electrically connected to the power supply input end;

the coupler comprises a first coupler arranged on the cup body assembly and a second coupler arranged on the host, the first coupler and the second coupler are connected in an inserted mode, the first coupler and the second coupler respectively comprise a cup cover signal terminal, a grounding terminal and a detection terminal, and the cup cover signal terminal is electrically connected with the switch circuit; when the cup cover assembly is closed, the cup cover signal terminal and the detection terminal are electrically connected with the grounding terminal, and when the cup cover assembly is opened, the cup cover signal terminal, the detection terminal and the grounding terminal are disconnected;

the detection circuit is electrically connected with the detection terminal and the grounding terminal, and is used for detecting a resistance value between the detection terminal and the grounding terminal and generating a first electric signal; and

the controller comprises a first detection port, a second detection port and a control port, the first detection port is electrically connected with the detection circuit, the second detection port is electrically connected with the cup cover signal terminal, and the control port is electrically connected with the switch circuit; the controller detects a second electric signal of the cup cover signal terminal through the second detection port, detects the first electric signal through the first detection port, determines the opening and closing state of the cup cover assembly according to the first electric signal and the second electric signal, and controls the switching circuit to be switched on through the control port if the cup cover assembly is closed.

In some embodiments, the coupler includes bowl cover signal terminal, detection terminal and ground terminal, when bowl cover subassembly lid, bowl cover signal terminal and detection terminal all ground connection, detection circuit electricity connection coupler's detection terminal and ground terminal, detect the resistance value between detection terminal and the ground terminal, the controller is connected with bowl cover signal terminal and detection circuit electricity, so can confirm the state of opening and shutting of bowl cover subassembly according to the signal of telecommunication of bowl cover signal terminal and the signal of telecommunication that above-mentioned resistance value corresponds, can reduce the probability to the erroneous judgement of the condition of opening and shutting of bowl cover subassembly, improve the accuracy of detecting bowl cover subassembly state, prevent that the bowl cover subassembly does not cover and close and switch circuit switches on, and then improve the security of cooking machine.

Optionally, the food processor control circuit includes a dc power supply terminal, the detection circuit includes a voltage dividing resistor, the voltage dividing resistor is electrically connected between the dc power supply terminal and the detection terminal, and the ground terminal is grounded. In some embodiments, the voltage dividing resistor performs a voltage dividing function, so that an excessive voltage between the detection terminal and the ground terminal can be prevented, an excessive current of the detection circuit can be prevented, and the safety of the circuit can be improved.

Optionally, the detection circuit includes a current-limiting resistor electrically connected between the detection terminal and the first detection port. In some embodiments, the current limiting resistor plays a role in limiting current, so that the current of the detection circuit can be prevented from being too large, and the safety of the circuit is improved.

Optionally, the detection circuit includes a filter capacitor electrically connected between the detection terminal and the ground terminal. In some embodiments, the filter capacitor can filter interference signals between the detection terminal and the ground terminal, and the accuracy of the detection circuit is improved.

Optionally, the switch circuit includes an electric control switch and a triode connected with the electric control switch, the electric control switch is electrically connected with the power input end, the triode is electrically connected with the electric control switch and the cup cover signal terminal, the control port of the controller is electrically connected with the triode, and when the cup cover assembly is closed, the triode is controlled to control the electric control switch. In some embodiments, the triode can control the electric control switch to open and close, when the cup cover assembly covers, the controller controls the electric control switch through the triode, so that after the cup cover assembly covers, the host of the food processer enters a starting state, the safety of the food processer can be improved, and the circuit cost is low.

Optionally, the switch circuit includes a freewheeling diode, and the electronic control switch is connected in parallel with the freewheeling diode. In some embodiments, the freewheeling diode can slow down the current change flowing through the electronic control switch when the electronic control switch is turned on or turned off, so as to prevent the electronic control switch from being damaged and improve the reliability of the circuit.

Optionally, the cup body assembly includes a cup body and a cutter head assembly disposed at the bottom of the cup body, the first coupler is disposed on the cutter head assembly, the food processor control circuit includes a metal thimble disposed on the cutter head assembly, the metal thimble includes a ground thimble, a detection thimble and a cup cover signal thimble, the cup cover signal thimble is electrically connected to the cup cover signal terminal, the detection thimble is electrically connected to the detection terminal, and the ground thimble is electrically connected to the ground terminal; when the cup cover assembly is closed, the detection thimble and the cup cover signal thimble are electrically connected with the grounding thimble, and when the cup cover assembly is opened, the detection thimble, the cup cover signal thimble and the grounding thimble are all disconnected. In some embodiments, the metal thimble may be coupled to electrical signals of the lid assembly and the coupler, and the detection thimble and the lid signal thimble may be grounded when the lid assembly is closed, so that the controller may detect the electrical signals of the lid assembly and the detection circuit.

Optionally, cooking machine control circuit is including locating the electrically conductive connecting rod of cup with locate the electrically conductive piece of bowl cover, electrically conductive connecting rod includes signal connecting rod, ground connection connecting rod and detection connecting rod, cup subassembly place in when on the host computer, the signal connecting rod with bowl cover signal thimble electricity is connected, ground connection connecting rod with ground connection thimble electricity is connected, detect the connecting rod with it connects to detect the thimble electricity, when bowl cover subassembly lid, electrically conductive piece electricity is connected the signal connecting rod ground connection connecting rod with detect the connecting rod. In some embodiments, the conductive rod may connect electrical signals of the cup cover assembly and the metal thimble, and when the cup cover assembly is closed, the conductive component may ground the signal connecting rod and the detecting connecting rod to form a loop, so that the controller may detect a closing state of the cup cover assembly.

The application also provides a cooking machine, include:

the food processor control circuit of any one of the above;

a host;

the cup body assembly is detachably arranged on the host; and

the cup cover assembly can cover the cup body assembly. In some embodiments, be applied to the cooking machine with above-mentioned cooking machine control circuit, the cup cover subassembly that can get rid of the cooking machine appears the false retrieval that unusually leads to, improves the security of cooking machine.

Optionally, the host includes a motor, and the switch circuit is electrically connected to the motor; and/or

The detection circuit and the controller are arranged on the host. In some embodiments, the switch circuit can control the running state of the motor, and the circuit is simple and low in cost. The detection circuit and the controller are arranged on the host, so that the integration level of the circuit can be improved, and the circuit is simple.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

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 application.

Fig. 1 is a schematic structural diagram of an embodiment of a food processor of the present application.

Fig. 2 is a schematic structural diagram of an embodiment of a main unit of the food processor shown in fig. 1.

Fig. 3 is a schematic structural view of an embodiment of a cutter head assembly of the food processor shown in fig. 1.

Fig. 4 is a partial schematic structural diagram of the food processor shown in fig. 1 according to an embodiment.

Fig. 5 is a circuit diagram of an embodiment of the food processor control circuit of the present application.

Fig. 6 is a flowchart of an embodiment of a method of the controller of the food processor control circuit shown in fig. 5.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The food processer control circuit of the embodiment of the application comprises a power supply input end, a switch circuit, a coupler, a detection circuit and a controller. The power input end is used for connecting an external power supply. The switch circuit is electrically connected to the power input terminal. The coupler comprises a first coupler arranged on the cup body assembly and a second coupler arranged on the host, the first coupler and the second coupler are connected in an inserting mode, the first coupler and the second coupler respectively comprise a cup cover signal terminal, a grounding terminal and a detection terminal, and the cup cover signal terminal is electrically connected with the switch circuit. When the cup cover assembly is closed, the cup cover signal terminal and the detection terminal are electrically connected with the grounding terminal, and when the cup cover assembly is opened, the cup cover signal terminal, the detection terminal and the grounding terminal are all disconnected. The detection circuit is electrically connected with the detection terminal and the grounding terminal and is used for detecting the resistance value between the detection terminal and the grounding terminal and generating a first electric signal. The controller comprises a first detection port, a second detection port and a control port, the first detection port is electrically connected with the detection circuit, the second detection port is electrically connected with the cup cover signal terminal, and the control port is electrically connected with the switch circuit. The controller detects a second electric signal of the cup cover signal terminal through the second detection port, detects a first electric signal through the first detection port, determines the opening and closing state of the cup cover assembly according to the first electric signal and the second electric signal, and controls the switch circuit to be switched on through the control port if the cup cover assembly is closed. In some embodiments, the coupler includes bowl cover signal terminal, detection terminal and ground terminal, detection circuit electricity connection coupler's detection terminal and ground terminal, when bowl cover subassembly lid, bowl cover signal terminal and detection terminal all ground connection, detect the resistance value between detection terminal and the ground terminal, the controller is connected with bowl cover signal terminal and detection circuit electricity, the state of opening and shutting of bowl cover subassembly can be confirmed according to the signal of telecommunication of bowl cover signal terminal and the signal of telecommunication that above-mentioned resistance value corresponds so, can reduce the probability of the erroneous judgement to the condition of opening and shutting of bowl cover subassembly, improve the accuracy of detecting bowl cover subassembly state, prevent that bowl cover subassembly does not cover and closes and switch circuit switches on, and then improve the security of cooking machine.

The application provides a cooking machine control circuit and cooking machine. The food processor control circuit and the food processor of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Fig. 1 is a schematic structural diagram of an embodiment of a food processor 100 according to the present application. The food processor 100 may include a soymilk maker or a wall breaking machine, etc. As shown in fig. 1, the food processor 100 includes a main body 101, a cup assembly 102, and a lid assembly 105. In some embodiments, the host 101 is in the form of a cradle. The host 101 can provide power, control and drive the food processor 100 to work, and can interact with the user. The cup body assembly 102 is detachably arranged on the main machine 101, and the cup body assembly 102 comprises a cup body 103 and a cutter disc assembly 104 arranged at the bottom of the cup body 103. The cup body assembly 102 can contain food materials, and the food materials can be stirred, heated and/or vacuumized in the cup body assembly 102. Specifically, the cup 103 can be used to hold food, and the cutter assembly 104 can be used to whip the food in the cup 103.

The lid assembly 105 may be placed on the bowl assembly 102. When the food processor 100 is in operation, the lid assembly 105 is closed on the cup assembly 102. After the food processor 100 is finished, the lid assembly 105 may be removed from the bowl assembly 102. In some embodiments, lid assembly 105 may be screwed onto bowl assembly 102 and rotated into position such that lid assembly 105 covers bowl assembly 102. In other embodiments, lid assembly 105 may be closed in place from top to bottom with lid assembly 105 covering bowl assembly 102. In some embodiments, lid assembly 105 is removably assembled to bowl assembly 102 and may be separable from bowl assembly 102. In other embodiments, lid assembly 105 is hingedly attached to bowl assembly 102.

Fig. 2 is a schematic structural diagram of an embodiment of the host 101 of the food processor 100 shown in fig. 1. With reference to fig. 1 and 2, the food processor 100 includes a first coupler 106 and a second coupler 107. The food processor 100 further comprises a controller 207, which is disposed inside the host 101 and is used for controlling the food processor 100. First coupler 106 is disposed on cup assembly 102. In this embodiment, the first coupler 106 is disposed at the bottom of the cutterhead assembly 104. The second coupler 107 is provided in the host 101. In the present embodiment, the second coupler 107 is disposed on the upper portion of the host 101 and is electrically connected to the controller 207. The first coupler 106 and the second coupler 107 are plugged. The second coupler 107 is electrically connected to the first coupler 106 when the cutterhead assembly 104 is mounted to the main machine 101. In some embodiments, when the cutterhead assembly 104 is mounted to the main machine 101, the second coupler 107 is electrically connected to the first coupler 106, such that the cutterhead assembly 104 is electrically connected to the controller 207, and the controller 207 may detect an electrical signal from the cutterhead assembly 104, such as an electrical temperature signal from a temperature sensor provided in the cutterhead assembly 104. In this embodiment, when the lid assembly 105 is attached to the bowl assembly 102, a signal is passed through the handle 109 and the cutterhead assembly 104 into the controller 207 so that the controller 207 can detect whether the lid assembly 105 is closed.

The first coupler 106 and the second coupler 107 each include a lid signal terminal 203, a ground terminal 204, and a detection terminal 205. Lid signal terminal 203 is used to transmit the lid signal of lid assembly 105. The ground terminal 204 is used for grounding. The detection terminal 205 is used for detecting whether the lid assembly 105 is normally closed. When lid assembly 105 is closed, lid signal terminal 203 and detection terminal 205 are both electrically connected to ground terminal 204, and lid signal terminal 203 and detection terminal 205 are both grounded, so that lid signal terminal 203 and detection terminal 205 form a loop. When lid assembly 105 is open, lid signal terminal 203, sense terminal 205, and ground terminal 204 are all open.

Fig. 3 is a schematic structural view of an embodiment of the cutter head assembly 104 of the food processor 100 shown in fig. 1. Referring to fig. 1-3, the impeller assembly 104 is removably coupled to the cup 103. When the food processor 100 works, the cutter head assembly 104 is assembled on the cup body 103. After the food processor 100 is finished, the cutter head assembly 104 can be detached for cleaning or maintenance. In some embodiments, the cutter head assembly 104 can be detached, which makes the food processor 100 more flexible to use and convenient to clean and detect. The cutterhead assembly 104 includes a cutterhead 113 and a metal thimble 117. The metal thimble 117 is connected with the cutter head 113.

First coupler 106 is disposed on cutterhead assembly 104, and metal pins 117 include a ground pin 114, a detection pin 115, and a lid signal pin 116, lid signal pin 116 is electrically connected to lid signal terminal 203, detection pin 115 is electrically connected to detection terminal 205, and ground pin 114 is electrically connected to ground terminal 204. When lid assembly 105 is closed, detection pins 115 and lid signal pins 116 are electrically connected to ground pins 114, and when lid assembly 105 is opened, detection pins 115, lid signal pins 116 and ground pins 114 are disconnected.

The first coupler 106 is electrically connected to the metal thimble 117, and when the cutter head assembly 104 is detached from the cup 103 and mounted on the main machine 101, if a person touches the metal thimble 117 or there is liquid on the metal thimble 117, the resistance between the terminals of the first coupler 106 is changed, and the resistance between the terminals of the second coupler 107 is also changed because the first coupler 106 is inserted into the second coupler 107. In some embodiments, a metal pin 117 may couple electrical signals of the lid assembly 105 and the first coupler 106, and when the lid assembly 105 is closed, the sensing pin 115 and the lid signal pin 116 may be grounded, which may enable the controller 207 to sense the electrical signals of the lid assembly 105.

Fig. 4 is a partial schematic structural diagram of the food processor 100 shown in fig. 1 according to an embodiment. Cup 103 includes conductive link 111 and lid assembly 105 includes conductive element 112. Conductive link 111 includes signal link 118, ground link 120, and detection link 119, where when cup assembly 102 is placed on host 101, signal link 118 is electrically connected to cup signal pin 116, ground link 120 is electrically connected to ground pin 114, detection link 119 is electrically connected to detection pin 115, and when cup assembly 105 is closed, conductive element 112 is electrically connected to signal link 118, ground link 120, and detection link 119. When the food processor 100 is in operation, the lid assembly 105 is closed, and the conductive member 112 is electrically connected to the signal link 118, the ground link 120 and the detection link 119. Conductive link 111 is electrically coupled to metal pin 117 to conduct electrical signals from lid assembly 105 to metal pin 117.

Fig. 5 is a circuit diagram of an embodiment of the food processor control circuit 200 according to the present application. Referring to fig. 1-5, the food processor 100 includes a food processor control circuit 200. The food processor control circuit 200 includes a conductive link 111 disposed on the cup 103 and a conductive element 112 disposed on the lid assembly 105. As shown in fig. 5, the food processor control circuit 200 includes a power input terminal L1, a switching circuit 201, a coupler 110, a detection circuit 206, and a controller 207. The power input terminal L1 is used for connecting an external power supply and supplying electric energy to the food processor control circuit 200. In some embodiments, the power input terminal L1 is connected to the mains. The switch circuit 201 is electrically connected to the power input terminal L1. In some embodiments, the switch circuit 201 can be used to control the power on/off of the load of the food processor 100. The coupler 110 includes a first coupler 106 disposed on the cup assembly 102 and a second coupler 107 disposed on the host 101, the first coupler 106 and the second coupler 107 are plugged, the first coupler 106 and the second coupler 107 each include a lid signal terminal 203, a ground terminal 204, and a detection terminal 205, and the lid signal terminal 203 is electrically connected to the switch circuit 201. When the lid assembly 105 is closed, the lid signal terminal 203 and the detection terminal 205 are electrically connected to the ground terminal 204, and when the lid assembly 105 is opened, the lid signal terminal 203, the detection terminal 205 and the ground terminal 204 are disconnected. The ground terminal 204 is used for grounding. The detection circuit 206 is electrically connected to the detection terminal 205 and the ground terminal 204, and is configured to detect a resistance value between the detection terminal 205 and the ground terminal 204 and generate a first electrical signal. When the lid assembly 105 is closed on the cup assembly 102 and the coupler 110 is normal, the resistance between the detection terminal 205 and the ground terminal 204 approaches 0. When coupler 110 is abnormal, for example, when there is liquid in coupler 110, the resistance between detection terminal 205 and ground terminal 204 becomes large, which is about 30K Ω. For another example, when a human hand touches the metal thimble 117 of the cutter head assembly 104, the resistance between the detection terminal 205 and the ground terminal 204 also increases to about 100K Ω. Therefore, the resistance between the detection terminal 205 and the ground terminal 204 can be detected to determine whether the lid assembly 105 is normally covered on the cup assembly 102, thereby eliminating some abnormal situations.

The controller 207 includes a first detection port T1, a second detection port T2, and a control port T3. The first detection port T1 is electrically connected to the detection circuit 206 and detects a first electrical signal. The second detection port T2 is electrically connected to the lid signal terminal 203 for detecting a second electrical signal. The control port T3 is electrically connected to the switch circuit 201, and controls conduction of the switch circuit 201. The controller 207 detects a second electric signal of the cup cover signal terminal 203 through the second detection port T2, detects a first electric signal through the first detection port T1, determines an opening and closing state of the cup cover assembly 105 according to the first electric signal and the second electric signal, and controls the switch circuit 201 to be switched on through the control port T3 if the cup cover assembly 105 is closed. The controller 207 detects a second electrical signal of the lid signal terminal 203 through the second detection port T2, and if the second electrical signal indicates that the lid assembly 105 is closed, detects a first electrical signal indicating a resistance value between the detection terminal 205 and the ground terminal 204 through the first detection port T1, and determines an open/close state of the lid assembly 105 according to the first electrical signal. If the first electrical signal indicates that the resistance between the detection terminal 205 and the ground terminal 204 approaches to 0, indicating that the lid assembly 105 is normally covered on the cup body assembly 102, the switch circuit 201 can be controlled to be turned on through the control port T3, and the food processor 100 can perform operations such as whipping.

In some embodiments, the detection circuit 206 electrically connects the detection terminal 205 and the ground terminal 204 of the coupler 110, detects a resistance value between the detection terminal 205 and the ground terminal 204, and generates the first electrical signal that can indicate whether an abnormality occurs between the detection terminal 205 and the ground terminal 204. The second electrical signal generated by lid signal terminal 203 of coupler 110 indicates whether lid assembly 105 is closed. The controller 207 determines the open-close state of the cup cover assembly 105 according to the first electric signal and the second electric signal, so that misjudgment caused by abnormality of the cup cover assembly 105 can be eliminated, the accuracy of detecting the state of the cup cover assembly 105 is improved, the condition that the switch circuit 201 is conducted when the cup cover assembly 105 is not closed is prevented, and the reliability of the food processor 100 is improved.

In some embodiments, the food processor control circuit 200 includes a dc power source VCC, the detection circuit 206 includes a voltage dividing resistor R1, the voltage dividing resistor R1 is electrically connected between the dc power source L2 and the detection terminal 205, and the ground terminal 204 is grounded. The voltage dividing resistor R1 is connected in series with the detection terminal 205, and the ground terminal 204 is grounded. The voltage dividing resistor R1 may reduce the voltage between the detection terminal 205 and the ground terminal 204. In some embodiments, the voltage dividing resistor R1 performs a voltage dividing function, so as to prevent an excessive voltage between the detection terminal 205 and the ground terminal 204, prevent an excessive current of the detection circuit 206, and improve the safety of the food processor control circuit 200.

In some embodiments, the detection circuit 206 includes a current limiting resistor R2 electrically connected between the detection terminal 205 and the first detection port T1. The current limiting resistor R2 is connected in series with the detection terminal 205, and can reduce the current remaining through the detection terminal 205. In some embodiments, the current limiting resistor R2 plays a role of limiting current, so as to prevent the current of the detection circuit 206 from being too large, and improve the safety of the food processor control circuit 200.

In some embodiments, the detection circuit 206 includes a filter capacitor C1 electrically connected between the detection terminal 205 and the ground terminal 204. In some embodiments, the filter capacitor C1 serves as a filter, and can filter the interference signal between the detection terminal 205 and the ground terminal 204, so as to improve the accuracy of the detection circuit 206.

The first detection port T1 of the controller 207 detects a voltage Va of a resistance value between the detection terminal 205 and the ground terminal 204, and converts the voltage Va into an AD value, AD = (0 x3 FF)/VCC × Va, where the value of 0x3FF is determined according to a controller specification actually selected. The controller 207 stores a normal range of the AD value, and determines whether the detected AD value is within the normal range. If the coupler 110 is abnormal, the resistance value between the detection terminal 205 and the ground terminal 204 is large, the divided voltage is large, and the obtained AD value is out of the normal range. If the AD value detected by the controller 207 belongs to the normal range, the controller 207 records the AD value, saves the flag bit, and controls the food processor 100 to enter the ready-to-start state. If the AD value detected by the controller 207 does not fall within the normal range, the detection is repeated.

With continued reference to fig. 4, the switch circuit 201 includes an electronic control switch 208 and a transistor S1 connected to the electronic control switch 208, the electronic control switch 208 is electrically connected to the power input terminal L1, and the transistor S1 is electrically connected to the electronic control switch 208 and the cup lid signal terminal 203. In some embodiments, transistor S1 comprises a transistor. The electric control switch 208 is controlled by the triode S1, so that the circuit is reliable and the cost is low. The control port T3 of the controller 207 is electrically connected to the transistor S1, and when the cup lid assembly 105 is closed, the electronic control switch 208 is controlled by controlling the transistor S1. When the cup cover assembly 105 is closed, the controller controls the triode S1 to be conducted through the control port T3 after detecting that the cup cover assembly 105 is closed through the first detection port T1 and the second detection port T2, and the triode S1 controls the electric control switch 208 to be conducted. In some embodiments, the triode S1 can control the electronic control switch 208 to open and close, and when the cup lid assembly 105 is closed, the controller 207 controls the electronic control switch 208 by controlling the triode S1, so that it can be ensured that the host 101 of the food processor 100 enters a start state after the cup lid assembly 105 is closed, the safety of the food processor 100 can be improved, and the circuit cost is low.

In some embodiments, the switching circuit 201 includes a freewheeling diode D1 and the electronically controlled switch 208 is connected in parallel with the freewheeling diode D1. The freewheel diode D1 functions as a freewheel. When the electronic control switch 208 is turned on or off, the electronic control switch 208 has an inductive element, the electromotive force inside the electronic control switch 208 does not change immediately, the electronic control switch 208 and the freewheeling diode D1 form a loop, a continuous current is consumed, and the current at the electronic control switch 208 can change smoothly. In some embodiments, the freewheeling diode D1 may slow down the current variation flowing through the electronic control switch 208 when the electronic control switch 208 is turned on or off, so as to prevent the electronic control switch 208 from being damaged, and improve the reliability of the circuit.

Referring to fig. 1 and 4, in some embodiments, the host 101 includes a motor 108, and the switching circuit 201 is electrically connected to the motor 108. In some embodiments, the switching circuit 201 can control the operating state of the motor 108, and the circuit is simple and low cost. When the controller 207 detects that the lid assembly 105 is normally covered on the cup assembly 102, the controller 207 controls the switch circuit 201 to be conducted, and the switch circuit 201 controls the motor 108 to enter a starting state.

In some embodiments, the detection circuit 206 and the controller 207 are provided in the host 101. The detection circuit 206 and the controller 207 are provided in the host 101, which can improve the integration of the circuit and simplify the circuit. In some embodiments, the food processor control circuit 200 is applied to the food processor 100, so that false detection caused by an abnormality of the cup cover assembly 105 of the food processor 100 can be eliminated, and the safety of the food processor 100 can be improved.

Fig. 6 is a flowchart of an embodiment of a method 300 of the controller 207 of the food processor control circuit 200 shown in fig. 5. Referring to fig. 1, 5 and 6, when the food processor control circuit 200 is operating, the controller 207 performs the method 300, and the method 300 includes steps 310, 320, 330, 340 and 350. In step 310, a second electrical signal is detected at lid signal terminal 203. In step 320, it is determined whether the second electrical signal is a lid signal indicating that lid assembly 105 is closed. If so, step 330 is performed, otherwise, step 310 is returned to. In step 330, the first electrical signal is detected through the first detection port T1 and converted into an AD value. In step 340, it is determined whether the AD value of the first detection port T1 is in the normal range. If the AD value of the first detection port T1 is in the normal range, step 350 is executed. If the AD value of the first detection port T1 is not in the normal range, go back to step 310. In step 350, it is determined that the lid assembly 105 is normally closed, and the food processor 100 enters a ready-to-start state.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements 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 application is limited only by the appended claims.

Claims (10)

1. The utility model provides a cooking machine control circuit for the cooking machine, cooking machine (100) include host computer (101), detachably locate the cup body assembly (102) of host computer (101) and can cover in the bowl cover subassembly (105) of cup body assembly (102), its characterized in that, cooking machine control circuit (200) include:

the power supply input end is used for connecting an external power supply;

a switching circuit (201) electrically connected to the power input terminal;

the coupler (110) comprises a first coupler (106) arranged on the cup body assembly (102) and a second coupler (107) arranged on the host (101), the first coupler (106) and the second coupler (107) are plugged, the first coupler (106) and the second coupler (107) respectively comprise a cup lid signal terminal (203), a grounding terminal (204) and a detection terminal (205), and the cup lid signal terminal (203) is electrically connected with the switch circuit (201); when the cup cover assembly (105) is closed, the cup cover signal terminal (203) and the detection terminal (205) are electrically connected with the grounding terminal (204), and when the cup cover assembly (105) is opened, the cup cover signal terminal (203), the detection terminal (205) and the grounding terminal (204) are disconnected;

a detection circuit (206) electrically connected to the detection terminal (205) and the ground terminal (204) for detecting a resistance value between the detection terminal (205) and the ground terminal (204) and generating a first electrical signal; and

a controller (207) comprising a first detection port, a second detection port and a control port, wherein the first detection port is electrically connected with the detection circuit (206), the second detection port is electrically connected with the cup cover signal terminal (203), and the control port is electrically connected with the switch circuit (201); the controller (207) detects a second electric signal of the cup cover signal terminal (203) through the second detection port, detects the first electric signal through the first detection port, determines the opening and closing state of the cup cover assembly (105) according to the first electric signal and the second electric signal, and controls the switch circuit (201) to be switched on through the control port if the cup cover assembly (105) is closed.

2. The food processor control circuit according to claim 1, wherein the food processor control circuit (200) comprises a dc power supply terminal, the detection circuit (206) comprises a voltage dividing resistor electrically connected between the dc power supply terminal and the detection terminal (205), and the ground terminal (204) is grounded.

3. The food processor control circuit according to claim 1, wherein the detection circuit (206) comprises a current limiting resistor electrically connected between the detection terminal (205) and the first detection port.

4. The food processor control circuit according to claim 1, wherein the detection circuit (206) comprises a filter capacitor electrically connected between the detection terminal (205) and the ground terminal (204).

5. The food processor control circuit according to claim 1, wherein the switch circuit (201) comprises an electric control switch (208) and a transistor connected to the electric control switch (208), the electric control switch (208) is electrically connected to the power input terminal, the transistor is electrically connected to the electric control switch (208) and the lid signal terminal (203), the control port of the controller (207) is electrically connected to the transistor, and the electric control switch (208) is controlled by controlling the transistor when the lid assembly (105) is closed.

6. The food processor control circuit according to claim 5, wherein the switch circuit (201) comprises a freewheeling diode, and the electronically controlled switch (208) is connected in parallel with the freewheeling diode.

7. The food processor control circuit according to claim 1, wherein the cup body assembly (102) comprises a cup body (103) and a cutter disc assembly (104) arranged at the bottom of the cup body (103), the first coupler (106) is arranged on the cutter disc assembly (104), the food processor control circuit (200) comprises a metal thimble (117) arranged on the cutter disc assembly (104), the metal thimble (117) comprises a grounding thimble (114), a detection thimble (115) and a cup cover signal thimble (116), the cup cover signal thimble (116) is electrically connected with the cup cover signal terminal (203), the detection thimble (115) is electrically connected with the detection terminal (205), and the grounding thimble (114) is electrically connected with the grounding terminal (204); when the cup cover assembly (105) is closed, the detection thimble (115) and the cup cover signal thimble (116) are electrically connected with the grounding thimble (114), and when the cup cover assembly (105) is opened, the detection thimble (115), the cup cover signal thimble (116) and the grounding thimble (114) are all disconnected.

8. The food processor control circuit of claim 7, wherein the food processor control circuit (200) comprises a conductive connecting rod (111) arranged on the cup body (103) and a conductive piece (112) arranged on the cup cover assembly (105), the conductive connecting rod (111) comprises a signal connecting rod (118), a grounding connecting rod (120) and a detection connecting rod (119), when the cup body assembly (102) is placed on the host (101), the signal connecting rod (118) is electrically connected with the cup cover signal thimble (116), the grounding connecting rod (120) is electrically connected with the grounding thimble (114), the detection connecting rod (119) is electrically connected with the detection thimble (115), when the cup cover assembly (105) is covered, the conductive piece (112) is electrically connected with the signal connecting rod (118), the grounding connecting rod (120) and the detection connecting rod (119).

9. A food processor, comprising:

the food processor control circuit (200) of any of claims 1-8;

a host (101);

the cup body assembly (102) is detachably arranged on the main machine (101); and

a lid assembly (105) adapted to be placed over the bowl assembly (102).

10. The food processor of claim 9, wherein the host (101) comprises a motor (108), and the switch circuit (201) is electrically connected to the motor (108); and/or

The detection circuit (206) and the controller (207) are provided in the host (101).

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