CN213757887U

CN213757887U - Food processer circuit and food processer

Info

Publication number: CN213757887U
Application number: CN202022066514.0U
Authority: CN
Inventors: 丁永刚
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-07-23
Anticipated expiration: 2030-09-18

Abstract

The application provides a cooking machine circuit and cooking machine. The food processer circuit comprises a driving circuit, a switch, a detection circuit and a controller. The driving circuit is electrically connected with a power supply and is electrically connected with a load; the switch is electrically connected between the driving circuit and the load; the voltage dividing circuit of the detection circuit comprises a first voltage dividing unit and a second voltage dividing unit, wherein the first voltage dividing unit comprises a first end and a second end, the first end is electrically connected with the power supply, and the second end is electrically connected with the second voltage dividing unit and is electrically connected with the driving circuit through a switch; when the cooking cup is placed on the host machine, the first voltage division unit is connected with the load in parallel; when the cooking cup is detached from the main machine, the first voltage division unit is disconnected from the load; the controller comprises a detection port electrically connected between the first voltage division unit and the second voltage division unit, the electric signal of the detection circuit is detected through the detection port, whether the cooking cup is placed in the host or not is determined according to the electric signal, and when the cooking cup is detached from the host, the on-off state of the switch is determined according to the electric signal. The cooking machine comprises a cooking machine circuit. The safety is high.

Description

Food processer circuit and food processer

Technical Field

The application relates to the field of household appliances, in particular to a food processor 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. After some cooking machines carry the cup at present, when putting the cup again, there is the problem of mistake start-up in the cooking machine, probably injure the user by mistake, and the security still remains to be improved.

SUMMERY OF THE UTILITY MODEL

The application provides a modified cooking machine circuit and cooking machine can improve the cooking machine security.

The application provides a cooking machine circuit, cooking machine includes the owner

Machine and detachably assemble in the cooking cup of host computer, the cooking cup includes the load, cooking circuit includes:

the drive circuit is electrically connected with a power supply and is electrically connected with the load when the cooking cup is placed on the host;

a switch electrically connected between the driving circuit and the load;

the detection circuit comprises a voltage division circuit, the voltage division circuit comprises a first voltage division unit and a second voltage division unit, the first voltage division unit comprises a first end and a second end, the first end is electrically connected with the power supply, the second end is electrically connected with the second voltage division unit and is electrically connected with the driving circuit through the switch; when the cooking cup is placed on the host machine, the first voltage division unit is connected with the load in parallel; when the cooking cup is detached from the host machine, the first voltage division unit is disconnected from the load;

the controller, including the detection port, the detection port electricity connect in first partial pressure unit with between the second partial pressure unit, the controller passes through the detection port detects detection circuitry's signal of telecommunication, according to the signal of telecommunication is confirmed whether arrange the cup is placed in the host computer, and be in arrange the cup and detach when the host computer, according to the signal of telecommunication is confirmed the on-off state of switch.

Further, the load includes motor and heating element, the switch includes the relay, the relay includes movable contact, first stationary contact and second stationary contact, the movable contact is connected drive circuit, first stationary contact connect in first partial pressure unit the second end arrange the cup place in during the host computer, first stationary contact connects the motor, the second stationary contact is connected heating element. In some embodiments, when the food processer comprises a plurality of loads, the switches are performed through the relays, the circuit structure is simple, and the cost can be reduced.

Further, the first voltage dividing unit includes at least one first voltage dividing resistor, the second voltage dividing unit includes at least one second voltage dividing resistor, the first voltage dividing resistor is connected in series between the power supply and the second voltage dividing resistor, the second voltage dividing resistor is connected in series between the first voltage dividing resistor and a ground terminal, a total resistance value of the first voltage dividing resistor is greater than a total resistance value of the second voltage dividing resistor, and the detection port is connected between the first voltage dividing resistor and the second voltage dividing resistor. In some embodiments, the voltage of the power supply is divided by the first voltage dividing resistor and the second voltage dividing resistor, so that the circuit structure is simpler and the detection of the controller is facilitated.

Further, the cooking machine circuit includes the third partial pressure unit, the third partial pressure unit establish ties in first partial pressure unit with between the second partial pressure unit, first partial pressure unit connect in the power with between the third partial pressure unit, the controller the detection port connect in the third partial pressure unit with between the second partial pressure unit. In some embodiments, the third voltage dividing unit may further divide the voltage of the power supply, so that the voltage detected by the controller is within a voltage range borne by a port of the third voltage dividing unit, and the resistances of the resistors of the second voltage dividing unit and the third voltage dividing unit may be smaller, so that the volume of the resistor is smaller, and the overall volume is smaller.

Further, cooking machine circuit includes rectifier circuit, rectifier circuit connects first partial pressure unit with the second partial pressure unit is used for right the voltage after first partial pressure unit partial pressure carries out the rectification, detection port connect in rectifier circuit with the one end that the second partial pressure unit is connected. In some embodiments, the rectifier circuit may convert a strong ac power output by the power supply into a weak dc power that may be recognized by the controller so that the controller may detect it.

Further, the rectification circuit comprises a half-wave rectification circuit and a rectification filter circuit, one end of the half-wave rectification circuit is connected with the first voltage division unit, the other end of the half-wave rectification circuit is connected with the second voltage division unit, the rectification filter circuit is connected with the second voltage division unit in parallel, and the detection port is connected between the half-wave rectification circuit and the second voltage division unit. In some embodiments, the half-wave rectification circuit and the rectification filter circuit are used for converting alternating current strong current output by the power supply into direct current weak current, and the circuit structure is simpler.

Further, the half-wave rectifier circuit comprises a rectifier diode, the rectifier filter circuit comprises a rectifier filter capacitor, the anode of the rectifier diode is connected with the first voltage division unit, the cathode of the rectifier diode is connected with the rectifier filter capacitor and the second voltage division unit, and the detection port is connected between the rectifier diode and the second voltage division unit. In some embodiments, the rectifier diode has a small conduction voltage drop, so that the alternating current can be precisely rectified, the rectification precision of the circuit is high, and the rectifier diode and the rectifier capacitor are circuit devices which are easy to obtain and have low cost.

Further, the food processor circuit comprises a current-limiting resistor, and the current-limiting resistor is connected between the second voltage-dividing unit and the controller; and/or

The first voltage division unit and the second voltage division unit are connected in series between a live wire and a ground terminal of the power supply; and/or

The load comprises a motor, and when the cooking cup is placed on the host machine, the first voltage division unit is connected with the motor in parallel; and/or

The load includes heating element, arrange the cup place in during the host computer, first partial pressure unit with heating element is parallelly connected. In some embodiments, the current limiting resistor can limit current to prevent damage to the controller due to excessive current input to the controller.

The application provides a cooking machine includes:

a host;

the cooking cup is detachably assembled on the host machine and comprises a load; and

any one of the above food processor circuits.

Further, the load includes the motor, arrange the cup and include the cup, locate the cup bottom and stretch into stirring knife tackle spare in the cup, stirring knife tackle spare includes the arbor, the motor is located in the cup, the pivot of motor with stirring knife tackle spare the arbor is connected and is contacted. In some embodiments, the rotating shaft of the motor is directly connected with the cutter shaft, so that the food processor is low in height and low in noise.

In some embodiments of the present application, the switch is electrically connected between the driving circuit and the load, the first end of the first voltage dividing unit is electrically connected to the power supply, and the second end of the first voltage dividing unit is electrically connected to the second voltage dividing unit and electrically connected to the driving circuit through the switch. When the cooking cup is placed in the host, the first partial pressure unit is connected with the load in parallel, and when the cooking cup is detached from the host, the first partial pressure unit is disconnected with the load. The different states of cooking cup and cooking cup are unloaded from the different states of host computer back switch, and first partial pressure unit, second partial pressure unit, load and drive circuit's relation of connection is different for whether the controller can detect the switch adhesion, has reduced because of the switch adhesion lead to the probability of load mistake start-up, and cooking machine's security is higher.

Drawings

Fig. 1 is a schematic view of a food processor provided in an embodiment of the present application;

fig. 2 is a schematic view of a cooking cup included in the cooking machine of fig. 1;

fig. 3 is a cross-sectional view of the cooking cup of fig. 2;

fig. 4 is a circuit block diagram of an food processor circuit provided in an embodiment of the present application;

fig. 5 is a partial circuit diagram of the food processor circuit of fig. 4;

fig. 6 is another circuit diagram of a portion of the food processor circuit of fig. 4;

fig. 7 is another circuit diagram of a portion of the food processor circuit of fig. 4.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like 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 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 the terms "a" or "an" and the like in the description and in the claims of this application do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" includes two, and is equivalent to at least two. 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. As used in this specification 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.

Fig. 1 is a schematic view of a food processor 100 according to an embodiment of the present application. Fig. 2 is a schematic view of the food processing cup 12 included in the food processor 100 of fig. 1. Fig. 3 is a cross-sectional view of the cooking cup 12 in fig. 2. Referring to fig. 1 to 3, the food processor 100 includes a main body 11 and a food cup 12 detachably assembled to the main body 11. The host 11 may be in the form of a base for providing power to the food processor 100 to drive and control the food processor 100. The cooking cup 12 can be used to contain food material.

In some embodiments, the cooking cup 12 includes a load 120. When the food cup 12 is assembled to the host 11, the electric energy provided by the host 11 can drive the load 120 to work, so as to stir, heat, cool, preserve and/or vacuumize the food material 120. Specifically, in some embodiments, the load 120 includes a motor 125, the cooking cup 12 includes a cup body 121, a cup seat 122 disposed at the bottom of the cup body 121, and a stirring blade assembly 1211 disposed in the cup body 121, the stirring blade assembly 1211 includes a blade shaft 1212, the motor 125 is disposed in the cup seat 122, and the rotating shaft 1251 of the motor 125 is connected to and contacts the blade shaft 1212 of the stirring blade assembly 1211. The electric energy provided by the main body 11 can drive the motor 125 to rotate, and the motor 125 rotates to drive the stirring blade assembly 1211 to rotate, so as to whip the food material. In this embodiment, the motor 125 is disposed in the cup holder 122 of the cooking cup 12, and compared with some cooking machines in which the motor 125 is disposed in the host 11, the cooking machine 100 of the present application can reduce the volume of the host 11. The rotating shaft 1251 of the motor 125 is connected and contacted with the knife shaft 1212 of the stirring knife assembly 1211, and the rotating shaft 1251 of the motor 125 is directly connected with the knife shaft 1212, so that the overall height of the motor 125 and the stirring knife assembly 1211 is low, and the motor 125 can be arranged on the cup holder 122, thereby the overall height of the food processor 100 is low, the volume is reduced, the coaxiality of the rotating shaft 1251 of the motor 125 and the knife shaft 1212 of the stirring knife assembly 1211 is better, and simultaneously, the height is low, thereby the noise can be reduced.

In some embodiments, the load 120 may further include a heating element 123 assembled at the bottom of the cup 121, and the electric energy provided by the host 11 may cause the heating element 123 to generate heat, so as to heat the food material. The heating assembly 123 may include a heat generating plate provided with a heat generating pipe, an electromagnetic heat generating plate, or the like. The blender knife assembly 1211 may be assembled to the heating assembly 123. In some embodiments, the load 120 may further include a fresh-keeping device (not shown), and the electric energy provided by the host 11 may operate the fresh-keeping device to cool and keep food fresh.

Fig. 4 is a circuit block diagram of the food processor circuit 200 according to an embodiment of the present application. Referring to fig. 1 to 4, the food processor circuit 200 is applied to the food processor 100 and includes a driving circuit 25, a switch 28, a detection circuit 21 and a controller 22. In some embodiments, the main body 11 of the food processor 100 includes a main control circuit board (not shown), and at least a part of the circuits of the food processor circuit 200 can be disposed on the main control circuit board.

The drive circuit 25 is electrically connected to the power supply 23 and is electrically connected to the load 120 when the cooking cup 12 is placed on the main unit 11. In this embodiment, the power supply 23 comprises an ac power supply, such as mains. In other embodiments, the power source 23 comprises a DC power source, such as a battery. In this embodiment, when the cooking cup 12 is placed on the main unit 11, the load 120 is connected between the live line L and the neutral line N of the power supply 23, and the drive circuit 25 is connected between the neutral line N of the power supply 23 and the load 120. In other embodiments, the driving circuit 25 may be connected between the power line L of the power supply 23 and the load 120. In some embodiments, the controller 22 may be connected to the driving circuit 25, and the controller 22 may control the power, the rotation speed, and the like of the load 120 by controlling the driving circuit 25.

When the cooking cup 12 is placed on the main unit 11, the switch 28 is electrically connected between the drive circuit 25 and the load 120. When the driving circuit 25 is connected to the load 120, the driving circuit 25 can drive the load 120 to operate. The controller 22 may be connected to a switch 28. The controller 22 may control the switching between the driver circuit 25 and the load 120 by controlling the switch 28.

The detection circuit 21 is electrically connected to the power supply 23. In this embodiment, the detection circuit 21 can be connected in series between the live line L and the ground terminal of the power supply 23. The detection circuit 21 may include a voltage dividing circuit 211. The voltage dividing circuit 211 includes a first voltage dividing unit 2111 and a second voltage dividing unit 2112. The first voltage division unit 2111 includes a first terminal P1 and a second terminal P2, and the first terminal P1 is electrically connected to the power supply 23 and to the power line L of the power supply 23. The second terminal P2 is electrically connected to the second voltage dividing unit 2112, and is electrically connected to the drive circuit 25 through the switch 28. The controller 22 includes a detection port M-AD electrically connected between the first and second

voltage dividing units

2111 and 2112. In this embodiment, the controller 22 may detect the voltage outputted by the power supply 23 after being divided by the first voltage dividing unit 2111 through the detection port M-AD. In other embodiments, the detection circuit 21 may also be connected in series between the neutral line N and the ground of the power supply 23.

When the cooking cup 12 is placed on the main unit 11, the first pressure dividing unit 2111 is connected in parallel with the load 120. In this embodiment, when the food processor 12 is placed in the host 11, the parallel circuit formed by the first voltage dividing unit 2111 and the load 120 and the second voltage dividing unit 2112 are connected in series between the live line L and the ground terminal of the power supply 23 to divide the voltage output by the power supply 23. The controller 22 can detect the first electric signal through the detection port M-AD, and can determine that the cooking cup 12 is placed in the host 11 according to the first electric signal. In this embodiment, the first electrical signal is a first voltage signal.

When the cooking cup 12 is detached from the main unit 11, the first pressure dividing unit 2111 and the load 120 are disconnected. The controller 22 controls the switch 28 to disconnect the driving circuit 25 and the first voltage dividing unit 2111, so that the parallel circuit formed by the load 120 and the first voltage dividing unit 2111 is disconnected from the driving circuit 25 before the cooking cup 12 is reassembled in the host machine 11 and the user does not perform the cooking operation, the load 120 does not start to work, and accidental injury to the user can be prevented. In this case, the first voltage division unit 2111 and the second voltage division unit 2112 are connected in series between the live line L and the ground of the power supply 23. According to the circuit principle that the total resistance of the parallel circuit is smaller than the resistance of any branch circuit, in this embodiment, compared with the cooking cup 12 placed in the host 11, when the cooking cup 12 is detached from the host 11, the voltage division of the first voltage division unit 2111 on the power supply 23 is increased, the controller 22 can detect the second electric signal different from the first electric signal through the detection port M-AD, and can determine that the cooking cup 12 is detached from the host 11 according to the second electric signal. In this embodiment, the second electrical signal is a second voltage signal.

In some embodiments, after the cooking cup 12 is detached from the main machine 11, if the switch 28 is not disconnected from the driving circuit 25 and the first voltage dividing unit 2111 due to adhesion or the like, the first voltage dividing unit 2111, the switch 28 and the driving circuit 25 are connected in series between the live line L and the neutral line N of the power supply 23, and the first voltage dividing unit 2111 and the second voltage dividing unit 2112 are connected in series between the live line L and the ground of the power supply 23. The potentials of the neutral line N and the ground terminal may be different. The controller 22 can detect a third electrical signal different from the first electrical signal and the second electrical signal through the detection port M-AD, and determine that the cooking cup 12 is detached from the host 11 according to the third electrical signal, but the switch 28 does not disconnect the connection between the driving circuit 25 and the first voltage dividing unit 2111, so as to determine that the switch 28 is stuck. In this case, when the cooking cup 12 is placed on the main unit 11 again, the load 120 may be erroneously started. In some embodiments, if the controller 22 detects the third electrical signal, the food processor 100 can be controlled to alarm to remind the user, so that the safety can be improved. The third electrical signal may be a third voltage signal.

In some embodiments, the resistor of the second voltage dividing unit 2112, the resistor of the series circuit formed by the switch 28 and the driving circuit 25, and the potential of the zero line N and the potential of the ground terminal may be set appropriately, so that the controller 22 can detect different electrical signals through the detection port M-AD under the three conditions, thereby distinguishing the three conditions. For example, if the potential of the neutral line N is equal to the potential of the ground, the resistance of the second voltage dividing unit 2112 may be greater than the resistance of the series circuit formed by the switch 28 and the driving circuit 25, so that when the cooking cup 12 is detached from the host machine 11 and the switch 28 is disconnected between the driving circuit 25 and the first voltage dividing unit 2111, the voltage outputted from the power supply 23 by the second voltage dividing unit 2112 is divided more; when the cooking cup 12 is detached from the main unit 11, but the switch 28 is stuck and the connection between the driving circuit 25 and the first voltage dividing unit 2111 is not broken, the voltage on the second voltage dividing unit 2112 is pulled low because the resistance of the series circuit formed by the switch 28 and the driving circuit 25 is small, so that the controller 22 can detect different electrical signals through the detection port M-AD.

In other embodiments, based on the resistance change of the detection circuit 21 when the cooking cup 12 is placed in the host 11 and removed from the host 11, the controller 22 may also detect the current signals of the first voltage dividing unit 2111 and the second voltage dividing unit 2112 through the detection port M-AD, and determine that the cooking cup 12 is placed in the host 11 or removed from the host 11 according to different current signals.

In other embodiments, the second voltage dividing unit 2112 may also be connected between the first voltage dividing unit 2111 and the neutral wire N, i.e., the series circuit of the switch 28 and the driving circuit 25, and the second voltage dividing unit 2112 is connected between the first voltage dividing unit 2111 and the neutral wire N in parallel.

In some embodiments, the food processor circuit 200 includes a cup coupler 124 disposed on the food cup 12 and a host coupler 111 disposed on the host 11, the cup coupler 124 includes a first terminal 1241 and a second terminal 1242, the host coupler 111 includes a third terminal 1111 and a fourth terminal 1112, the load 120 is connected between the first terminal 1241 and the second terminal 1242, the third terminal 1111 is connected to the first terminal P1, the fourth terminal 1112 is connected to the second terminal P2, and is connected to the driving circuit 25 through the switch 28; when the cooking cup 12 is placed on the host 11, the cup coupler 124 is plugged into the host coupler 111, the first terminal 1241 is electrically connected to the third terminal 1111, and the second terminal 1242 is electrically connected to the fourth terminal 1112. In this way, when the cooking cup 12 is placed in the main unit 11, the load 120 and the first voltage division unit 2111 can be connected in parallel, and meanwhile, the parallel circuit formed by the load 120 and the first voltage division unit 2111 is connected in series between the live line L and the neutral line N of the power supply 23 through the switch 28 and the driving circuit 25. When the cooking cup 12 is detached from the main unit 11, the cup coupler 124 is separated from the main unit coupler 111, the first terminal 1241 is disconnected from the third terminal 1111, the second terminal 1242 is disconnected from the fourth terminal 1112, and the load 120 is disconnected from the first voltage dividing unit 2111. The first voltage division unit 2111, the switch 28 and the drive circuit 25 are connected in series between the live line L and the neutral line N of the power supply 23. The electric connection or disconnection between the load 120 and the detection circuit 21 is realized through the cup coupler 124 and the host coupler 111, the circuit structure is simple, and the coupler is a circuit component which is easy to obtain, so that the cost is low.

In the food processor circuit 200 of some embodiments of the present application, the switch 28 is electrically connected between the driving circuit 25 and the load 120, the first end P1 of the first voltage dividing unit 2111 is electrically connected to the power supply 23, and the second end P2 of the first voltage dividing unit 2111 is electrically connected to the second voltage dividing unit and electrically connected to the driving circuit 25 through the switch 28. When the cooking cup 12 is placed in the main unit 11, the first pressure dividing unit 2111 is connected in parallel to the load 120, and when the cooking cup 12 is detached from the main unit 11, the first pressure dividing unit 2111 is disconnected from the load 120. Different states of cooking cup 12 and cooking cup 12 are unloaded from host computer 11 back switch 28's different states, first partial pressure unit 2111, second partial pressure unit 2112, load 120 and drive circuit 25's relation of connection is different, make detection circuit 21 can produce different signals of telecommunication, thereby can make controller 22 confirm whether cooking cup 12 places in host computer 11 according to the signal of telecommunication of difference, and confirm the on-off state of switch 28, so, controller 22 can detect whether switch 28 adheres, the probability that leads to load 120 false start because of the switch 28 adhesion has been reduced, cooking machine 100's security is higher.

Fig. 5 is a partial circuit diagram of the food processor circuit 200 in fig. 4. Referring to fig. 4 and 5, in the present embodiment, the food processor circuit 200 includes a first terminal 212 and a second terminal MOT, the first terminal 212 is connected to the live line L and the third terminal 1111 of the power supply 23, and is connected to the first voltage division unit 2111 through a first terminal P1; the second terminal MOT is connected to the fourth terminal 1112, the driving circuit 25 through the switch 28, and the first voltage dividing unit 2111 through the second terminal P2. When the cooking cup 12 is placed on the main body 11, the motor 125 is connected between the first end 212 and the second end MOT. The first pressure dividing unit 2111 is connected in parallel to the motor 125. When the cooking cup 12 is detached from the main unit 11, the motor 125 is disconnected between the first end 212 and the second end MOT. The first pressure dividing unit 2112 is disconnected from the motor 125. The controller 22 may control the switch 28 to disconnect the second terminal MOT from the driving circuit 25 to disconnect the first voltage division unit 2111 from the driving circuit 25. In this embodiment, the food processor circuit 200 further includes a third terminal HEAT _ N connected to the fourth terminal 1112, and a driving circuit 25 connected via a switch 28, wherein when the food processing cup 12 is placed in the main body 11, the heating element 123 is connected between the first terminal 212 and the third terminal HEAT _ N. In this embodiment, whether the food processing cup 12 is placed in the host 11 or not can be detected through the motor 125, and after the food processing cup 12 is detached from the host 11, whether the switch 28 is disconnected between the second end MOT and the driving circuit 25 or not is detected, and when the controller 22 detects that the switch 28 is not disconnected between the second end MOT and the driving circuit 25, the controller 22 can control the food processing machine 100 to alarm, so as to prevent the food processing cup 12 from being placed in the host 11 again, and the motor 125 is started by mistake, thereby causing an accidental injury to the user.

In other embodiments, the second terminal MOT may be connected to the fourth terminal 1112, and the driving circuit 25 may be connected through the switch 28, but not connected to the first voltage dividing unit 2111 through the second terminal P2, the third terminal HEAT _ N may be connected to the fourth terminal 1112, and the driving circuit 25 may be connected through the switch 28, and connected to the first voltage dividing unit 2111 through the second terminal P2, so as to detect whether the cooking cup 12 is placed in the host 11 through the heating element 123, and detect whether the switch 28 disconnects the connection between the third terminal HEAT _ N and the driving circuit 25 after the cooking cup 12 is detached from the host 11. When the controller 22 detects that the switch 28 does not disconnect the third terminal HEAT _ N from the driving circuit 25, the controller 22 can control the food processor 100 to alarm, so as to prevent the heating element 123 from being activated by mistake and causing an accidental injury to the user when the food processing cup 12 is placed on the host 11 again.

In the present embodiment, the switch 28 includes a relay RLY01, the relay RLY01 includes a movable contact a, a first fixed contact B and a second fixed contact C, the movable contact a is connected with the driving circuit 25, the first fixed contact B is connected with the second end P2 of the first voltage division unit 2111, the first fixed contact B is connected with the motor 125, and the second fixed contact C is connected with the heating assembly 123 when the cooking cup 12 is placed in the host machine 11. The controller 22 controls the driving circuit 25 to be communicated with the motor 125 and disconnected with the heating assembly 123 by controlling the movable contact a to be communicated with the first fixed contact B; the controller 22 controls the driving circuit 25 to communicate with the heating assembly 123 and to disconnect from the motor 125 by controlling the movable contact a and the second stationary contact C to communicate. When the food processor 100 includes the plurality of loads 120, the relay RLY01 is switched, so that the circuit structure is simple and the cost can be reduced.

In this embodiment, the first voltage dividing unit 2111 includes at least one first voltage dividing resistor R208, the second voltage dividing unit 2112 includes at least one second voltage dividing resistor R210, the first voltage dividing resistor R208 is connected in series between the power supply 23 and the second voltage dividing resistor R210, the second voltage dividing resistor R210 is connected in series between the first voltage dividing resistor R208 and the ground, and the detection port M-AD is connected between the first voltage dividing resistor R208 and the second voltage dividing resistor R210. When the food cup 12 is placed in the host 11, the motor 125 is connected in parallel with the first voltage dividing resistor R208, and then connected in series with the second voltage dividing resistor R210 between the live line L and the ground of the power supply 23, and the controller 22 detects the voltage (i.e., the first voltage signal) of the second voltage dividing resistor R210 through the detection port M-AD to determine that the food cup 12 is placed in the host 11. If the cooking cup 12 is detached from the host 11 and the switch 28 has disconnected the connection between the driving circuit 25 and the second terminal MOT, the motor 125 is disconnected from the first voltage-dividing resistor R208, the first voltage-dividing resistor R208 and the second voltage-dividing resistor R210 are connected in series between the live line L and the ground of the power supply 23, the controller 22 detects the voltage (i.e., the second voltage signal) of the second voltage-dividing resistor R210 through the detection port M-AD, and determines that the cooking cup 12 is detached from the host 11 and the switch 28 has disconnected the connection between the driving circuit 25 and the second terminal MOT. If the cooking cup 12 is detached from the main machine 11, and the switch 28 does not disconnect the connection between the driving circuit 25 and the second terminal MOT, the first voltage-dividing resistor R208, the switch 28 and the driving circuit 25 are connected in series between the live line L and the neutral line N of the power supply 23, the first voltage-dividing resistor R208 and the second voltage-dividing resistor R210 are connected in series between the live line L and the ground terminal of the power supply 23, and the controller 22 detects the voltage (i.e., the third voltage signal) of the second voltage-dividing resistor R210 through the detection port M-AD, and determines that the cooking cup 12 is detached from the main machine 11 and the switch 28 does not disconnect the connection between the driving circuit 25 and the second terminal MOT.

In this embodiment, when the cooking cup 12 is placed on the main unit 11, the motor 125 is connected in parallel to all the first voltage dividing resistors R208. In other embodiments, when the cooking cup 12 is placed on the main machine 11, the motor 125 may be connected in parallel with a portion of the first voltage dividing resistor R208. The voltage of the power supply 23 is divided by the first voltage dividing resistor R208 and the second voltage dividing resistor R210, so that the circuit structure is simple and the detection by the controller 22 is convenient.

In some embodiments, the total resistance of the first divider resistor R208 is greater than the total resistance of the second divider resistor R210. In this way, the voltage division of the power supply 23 by the second voltage-dividing resistor R210 is small, the voltage detected by the controller 22 through the detection port M-AD is small, and the controller 22 can be prevented from being burned out due to the detected voltage being too large within a tolerable range of the port of the controller 22.

In some embodiments, the food processor circuit 200 includes a third voltage division unit 2113, the third voltage division unit 2113 is connected in series between the first voltage division unit 2111 and the second voltage division unit 2112, the first voltage division unit 2111 is connected between the power supply 23 and the third voltage division unit 2113, and the detection port M-AD of the controller 23 is connected between the third voltage division unit 2113 and the second voltage division unit 2112. The third voltage division unit 2113 may further divide the voltage of the power supply 23, so that the voltage detected by the controller 22 is within the voltage range borne by the port thereof, and the resistances of the resistors of the second voltage division unit 2111 and the third voltage division unit 2113 may be smaller, so that the volume of the resistor is smaller, and the overall volume is smaller.

In some embodiments, the third voltage dividing unit 2113 includes at least one third voltage dividing resistor R205, and the third voltage dividing resistor R205 is connected in series between the first voltage dividing resistor R208 and the second voltage dividing resistor R210.

In some embodiments, the food processor circuit 200 includes a rectifying circuit 213, the rectifying circuit 213 is connected to the first voltage dividing unit 2111 and the second voltage dividing unit 2112, and is configured to rectify the voltage divided by the first voltage dividing unit 2111, and the detection port M-AD is connected to one end of the rectifying circuit 213 connected to the second voltage dividing unit 2112. The rectifying circuit 213 can convert the strong ac power output from the power supply 23 and divided by the first voltage dividing unit 2111 into weak dc power that can be recognized by the controller 22, so that the controller 22 can detect the strong ac power. The controller 22 can determine whether the cooking cup 12 is assembled to the host 11 and whether the switch 28 disconnects the first voltage dividing unit 2111 from the driving circuit 25 according to the detected change in the dc voltage.

In some embodiments, the rectifier circuit 213 includes a half-wave rectifier circuit 2131 and a rectifier filter circuit 2132, one end of the half-wave rectifier circuit 2131 is connected to the first voltage dividing unit 2111, the other end of the half-wave rectifier circuit 2131 is connected to the second voltage dividing unit 2112, the rectifier filter circuit 2132 is connected in parallel to the second voltage dividing unit 2112, and the detection port M-AD is connected between the half-wave rectifier circuit 2131 and the second voltage dividing unit 2112. In the present embodiment, the rectifying and smoothing circuit 21141 is connected between the first voltage dividing unit 2111 and the third voltage dividing unit 2113. In other embodiments, the rectifying and filtering circuit 21141 may also be connected between the third voltage dividing unit 2113 and the second voltage dividing unit 2112, and the first voltage dividing unit 2111 is connected through the third voltage dividing unit 2113. The circuit connection mode is flexible. The half-wave rectifier circuit 2131 may be set to be on at one half cycle (for example, positive half cycle) of alternating current and to be off at the other half cycle (for example, negative half cycle). The rectifier filter circuit 2132 may be configured to perform ac filtering on the ac power (e.g., the ac power of the positive half-cycle) output by the half-wave rectifier circuit 2131, that is, to filter an ac component in the ac power, so that the controller 22 collects a dc power signal. The half-wave rectification circuit 2131 and the rectification filter circuit 2132 convert the strong alternating current output by the power supply 23 into weak direct current, and the circuit structure is simple. In some embodiments, when the dc signal collected by the controller 22 is within a first voltage range (e.g., between 4 volts and 5 volts), it is determined that the cooking cup 12 has been placed on the host 11; and/or the controller 22 determines that the cooking cup 12 is detached from the host 11 and the switch 28 has disconnected the connection between the first voltage dividing unit 2111 and the driving circuit 28 when the dc signal collected by the cooking cup 12 is within a second voltage range (e.g., 2 v to 4 v); and/or the controller 22 determines that the cooking cup 12 is removed from the host 11 but the switch 28 does not disconnect the first voltage dividing unit 2111 from the driving circuit 28 when the dc signal is in the second voltage range (e.g., 0 v to 2 v).

In some embodiments, the half-wave rectification circuit 2131 includes a rectification diode D402, the rectification filter circuit 2132 includes a rectification capacitor C302, an anode of the rectification diode D402 is connected to the first voltage dividing unit 2111, a cathode of the rectification diode D402 is connected to the rectification capacitor C302 and the second voltage dividing unit 2112, and the detection port M-AD is connected between the rectification diode D402 and the second voltage dividing unit 2112. Specifically, the cathode of the rectifying diode C402 is connected to the rectifying capacitor C302 and the second voltage dividing unit 2112 through the third voltage dividing unit 2113. The rectifying capacitor C302 and the second voltage division unit 2112 are connected in parallel between the third voltage division unit 2113 and the ground. The detection port M-AD is connected to one end of the second voltage division unit 2112 connected to the third voltage division unit 2113, and one end of the rectifying capacitor C302 connected to the third voltage division unit 2113. In the positive half cycle of the alternating current, the rectifier diode D402 is conducted; in the negative half cycle of the alternating current, the rectifier diode D402 is turned off. The rectifying capacitor C302 rectifies the positive half cycle of alternating current. The voltage collected by the controller 22 is a forward dc voltage.

In other embodiments, the cathode of the rectifying diode D402 is connected to the first voltage-dividing unit 2111, the anode of the rectifying diode D402 is connected to the rectifying capacitor C302 and the second voltage-dividing unit 2112, and the detection port M-AD is connected between the rectifying diode D402 and the second voltage-dividing unit 2112. In the positive half cycle of the alternating current, the rectifier diode D402 is cut off; during the negative half cycle of the alternating current, the rectifier diode D402 conducts. The rectifying capacitor C302 rectifies the negative half cycle of alternating current. The voltage collected by the controller 22 is a negative dc voltage.

The rectification is performed through the rectifier diode D402 and the rectifier capacitor C302, on one hand, the conduction voltage drop of the rectifier diode D402 is small, the alternating current can be precisely rectified, the rectification precision of the circuit is high, and on the other hand, the rectifier diode D402 and the rectifier capacitor C302 are circuit devices which are easy to obtain, and the cost is low.

In some embodiments, the food processor circuit 200 includes at least one current limiting resistor R207. The current limiting resistor R207 is connected between the second voltage dividing unit 2112 and the controller 22. The current limiting resistor R207 can limit the current to prevent the controller 22 from being damaged due to an excessive current input to the controller 22.

In some embodiments, the driving circuit 25 includes a silicon controlled SCR201, the base of the silicon controlled SCR201 is connected to the controller 22, the first pole T1 is connected to the neutral line L of the power supply 23, and the second pole T1 is connected to the load 120. According to the operating characteristic that the SCR201 is automatically turned off at the ac zero crossing point, the controller 22 may control the power, the rotation speed, and the like of the load 120 by controlling the turn-on time point of the SCR201 after each ac zero crossing point.

In some embodiments, the food processor circuit 200 includes an alarm circuit 31. The alarm circuit 31 includes an alarm BZ 1. The alarm BZ1 is connected to the controller 22. Controller 22 may control alarm BZ1 to sound an alarm to alert the user. For example, when the cooking cup 12 is not correctly placed on the host 11, but the user starts to start the cooking function, the controller 22 may control the alarm BZ1 to sound an alarm to prompt the user; for another example, when the cooking cup 12 is detached from the main unit 11, but the switch 28 does not disconnect the first voltage dividing unit 2111 from the driving circuit 25, the controller 22 may control the alarm BZ1 to sound an alarm to prompt the user.

In some embodiments, the food processor circuit 200 includes a zero-crossing detection circuit 27. The zero-cross detection circuit 27 is connected to the first terminal 212 and the controller 22, and is connected to the live line L of the power supply 23 through the first terminal 212. The controller 22 may detect the ac zero-crossing point through the zero-crossing detecting circuit 27, and control the power, the rotation speed, and the like of the load 120 according to the detected ac zero-crossing point. Specifically, the zero-cross detection circuit 27 includes a diode D401. The anode of the diode D401 is connected to the first terminal 212, and the cathode of the diode D401 is connected to the controller 22. The controller 22 determines the ac zero crossing point according to different electrical signals collected when the diode D401 is turned on and off.

Fig. 6 is another circuit diagram of part of the food processor circuit 200 in fig. 4. Fig. 7 is another circuit diagram of a portion of the food processor circuit 200 of fig. 4.

Referring to fig. 4-7, in some embodiments, the food processor circuit 200 includes a power supply circuit 24. The power circuit 24 is connected to the live line L and the neutral line N of the power supply 23, and can convert the ac strong current of the power supply 23 into the dc weak current, which can be used to drive the controller 22 to operate. The detection circuit 21 may be connected to a power supply 23 via a power supply circuit 24.

In some embodiments, the food processor circuitry 200 includes display circuitry 29. The display circuit 29 includes at least one display sub-circuit 291. The first display sub-circuit 291 on the left side is taken as an example for explanation. Each display subcircuit 291 includes a nixie tube A-G. The numbers 0-9 can be displayed by controlling the on (nixie tube on) or off (nixie tube off) of one or more of the nixie tubes a-G. Thus, the cooking time and the like can be displayed, and the user can be prompted. Each display sub-circuit 201 includes display control terminals S1-S8. Each display control terminal S1-S8 is connected to controller 22 and nixie tubes A-G, respectively. The controller 22 can control the on/off of the nixie tubes A-G corresponding to each of the control terminals S1-S8 through the control terminals S1-S8. Display subcircuit 291 may also include a cue light nixie tube (e.g., nixie tube L508). The controller 22 can prompt the user by lighting the light and the like by controlling the conduction of the nixie tube of the prompt lamp.

In some embodiments, the food processor circuit 200 includes a function selection circuit 30. The function selection circuit 30 may comprise function selection blocks TK1-TK10, each of which TK1-TK10 may be connected with the controller 22, respectively. The user can select cooking functions (for example, cooking porridge, cooking soup and the like) through the function selecting parts TK1-TK 10. The controller 22 receives cooking function information set by a user through the function selecting part TK1-TK 10. The function selecting parts TK1-TK10 may be keys.

In some embodiments, the food processor circuitry 200 includes temperature sensing circuitry 32. The temperature sensing circuit 32 may be used to sense the temperature of the food material. The temperature sensing circuit 32 may include a temperature sensing element CN801, and the temperature sensing element CN801 is connected to the controller 22. The controller 22 can sense the temperature of the food material through the temperature sensing part CN 801. The temperature sensing part CN801 may include a thermistor.

In some embodiments, the food processor circuit 200 includes a voltage detection circuit 26 for detecting the operating voltage of the load 120, so that the controller 22 can determine the power of the load 120 according to the detected operating voltage. The voltage detection circuit 26 is connected to the power line L of the power supply 23 and the controller 22. The voltage detection circuit 26 includes voltage dividing resistors R301, R302, and R304 connected in series between the power supply 23 and the ground. The controller 22 is connected between the voltage dividing resistor R302 and the voltage dividing resistor R304. The controller 22 may determine the operating voltage of the load 120 by detecting the voltage across the voltage divider resistor R304.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. The utility model provides a cooking machine circuit, is applied to the cooking machine, the cooking machine include host computer (11) and detachably assemble in cooking cup (12) of host computer (11), cooking cup (12) are including load (120), its characterized in that, the cooking machine circuit includes:

a drive circuit (25) electrically connected to a power supply (23) and electrically connected to the load (120) when the cooking cup (12) is placed on the main body (11);

a switch (28) electrically connected between the drive circuit (25) and the load (120);

the detection circuit (21) comprises a voltage division circuit (211), the voltage division circuit (211) comprises a first voltage division unit (2111) and a second voltage division unit (2112), the first voltage division unit (2111) comprises a first end and a second end, the first end is electrically connected with the power supply (23), the second end is electrically connected with the second voltage division unit (2112), and the detection circuit is electrically connected with the driving circuit (25) through the switch (28); when the cooking cup (12) is placed on the host (11), the first voltage division unit (2111) and the load (120) are connected in parallel; when the cooking cup (12) is detached from the host (11), the first voltage division unit (2111) is disconnected from the load (120);

controller (22), including the detection port, the detection port electricity connect in first partial pressure unit (2111) with between second partial pressure unit (2112), controller (22) passes through the detection port detects detection circuit (21)'s signal of telecommunication, according to the signal of telecommunication is confirmed whether arrange cup (12) place in host computer (11), and be in arrange cup (12) are unloaded when host computer (11), according to the signal of telecommunication is confirmed the on-off state of switch (28).

2. The food processor circuit according to claim 1, wherein the load (120) comprises a motor (125) and a heating assembly (123), the switch (28) comprises a relay including a movable contact connected to the driving circuit (25), a first stationary contact connected to the second end of the first voltage dividing unit (2111), and a second stationary contact connected to the motor (125) when the food cup (12) is placed on the main machine (11), and the second stationary contact is connected to the heating assembly (123).

3. The food processor circuit according to claim 1, wherein the first voltage dividing unit (2111) includes at least one first voltage dividing resistor, the second voltage dividing unit (2112) includes at least one second voltage dividing resistor, the first voltage dividing resistor is connected in series between the power supply (23) and the second voltage dividing resistor, the second voltage dividing resistor is connected in series between the first voltage dividing resistor and a ground terminal, a total resistance value of the first voltage dividing resistor is greater than a total resistance value of the second voltage dividing resistor, and the detection port is connected between the first voltage dividing resistor and the second voltage dividing resistor.

4. The food processor circuit of claim 1, comprising a third voltage division unit (2113), wherein the third voltage division unit (2113) is connected in series between the first voltage division unit (2111) and the second voltage division unit (2112), wherein the first voltage division unit (2111) is connected between the power supply (23) and the third voltage division unit (2113), and wherein the detection port of the controller (22) is connected between the third voltage division unit (2113) and the second voltage division unit (2112).

5. The food processor circuit of claim 1, comprising a rectifying circuit (213), wherein the rectifying circuit (213) is connected to the first voltage dividing unit (2111) and the second voltage dividing unit (2112) and is configured to rectify the voltage divided by the first voltage dividing unit (2111), and the detection port is connected to one end of the rectifying circuit (213) connected to the second voltage dividing unit (2112).

6. The food processor circuit according to claim 5, wherein the rectifier circuit (213) comprises a half-wave rectifier circuit (2131) and a rectifier filter circuit (2132), one end of the half-wave rectifier circuit (2131) is connected to the first voltage dividing unit (2111), the other end of the half-wave rectifier circuit (2131) is connected to the second voltage dividing unit (2112), the rectifier filter circuit (2132) is connected in parallel to the second voltage dividing unit (2112), and the detection port is connected between the half-wave rectifier circuit (2131) and the second voltage dividing unit (2112).

7. The food processor circuit according to claim 6, wherein the half-wave rectifier circuit (2131) comprises a rectifier diode, the rectifier filter circuit (2132) comprises a rectifier filter capacitor, an anode of the rectifier diode is connected to the first voltage dividing unit (2111), a cathode of the rectifier diode is connected to the rectifier filter capacitor and the second voltage dividing unit (2112), and the detection port is connected between the rectifier diode and the second voltage dividing unit (2112).

8. The food processor circuit of claim 1, comprising a current limiting resistor connected between the second voltage dividing unit (2112) and the controller (22); and/or

The first voltage division unit (2111) and the second voltage division unit (2112) are connected in series between a live line and a ground terminal of the power supply (23); and/or

The load (120) comprises a motor (125), and when the cooking cup (12) is placed on the host (11), the first voltage division unit (2111) is connected with the motor (125) in parallel; and/or

The load (120) comprises a heating assembly (123), and when the cooking cup (12) is placed on the host machine (11), the first pressure division unit (2111) is connected with the heating assembly (123) in parallel.

9. A food processor, comprising:

a host (11);

a cooking cup (12) detachably assembled to the main machine (11), wherein the cooking cup (12) comprises a load (120); and

the food processor circuit of any one of claims 1 to 8.

10. The food processor of claim 9, wherein the load (120) comprises a motor (125), the food processing cup (12) comprises a cup body (121), a cup seat (122) arranged at the bottom of the cup body (121), and a stirring knife assembly (1211) extending into the cup body (121), the stirring knife assembly (1211) comprises a knife shaft (1212), the motor (125) is arranged in the cup seat (122), and a rotating shaft (1251) of the motor (125) is connected and contacted with the knife shaft (1212) of the stirring knife assembly (1211).