CN211432533U

CN211432533U - Food processor

Info

Publication number: CN211432533U
Application number: CN201922228988.8U
Authority: CN
Inventors: 顾王骞
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-09-08
Anticipated expiration: 2029-12-12

Abstract

The application provides a cooking machine. The food processor comprises a plurality of replaceable stirring knife assemblies, a motor driving circuit, a power detection circuit and a recognition control circuit. The motor is detachably connected with the stirring knife assembly, and the motor rotates to drive the connected stirring knife assembly to rotate; the motor driving circuit is connected with the motor and used for driving the motor; the power detection circuit is connected with the motor and used for detecting an electric signal representing power when the motor rotates at a set rotating speed; and the identification control circuit is connected with the motor driving circuit and the power detection circuit and is used for controlling the motor driving circuit to drive the motor to rotate at a set rotating speed and identifying the type of the stirring knife assembly according to the electric signal of the motor detected by the power detection circuit. The coupler of the food processor can be unified, and the management cost of various couplers is reduced.

Description

Food processor

Technical Field

The application relates to a small household electrical appliance field especially relates to a cooking machine.

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.

A food processor comprises a plurality of cup bodies used for different purposes, such as a cup body used as a hot cup and used for making food needing to be heated, such as soybean milk, rice paste and the like; a cup body used as cold cup for making fruit juice and ice-shaving food. In the related art, different couplers are arranged at the bottoms of different types of cup bodies of the food processor, and the types of the cup bodies are identified by identifying the couplers. Thus, different couplers need to be manufactured, which is inconvenient to manage and costly.

SUMMERY OF THE UTILITY MODEL

The present application provides an improved food processor.

The application provides a cooking machine includes: a plurality of replaceable blender blade assemblies; the motor is detachably connected with the stirring cutter assembly, and the motor rotates to drive the connected stirring cutter assembly to rotate; the motor driving circuit is connected with the motor and used for driving the motor; the power detection circuit is connected with the motor and is used for detecting an electric signal representing power when the motor rotates at a set rotating speed; and the identification control circuit is connected with the motor driving circuit and the power detection circuit and is used for controlling the motor driving circuit to drive the motor to rotate at a set rotating speed and identifying the type of the stirring knife assembly according to the electric signal of the motor detected by the power detection circuit.

Further, the cooking machine includes a plurality of cups, a plurality of stirring sword subassemblies set up respectively in corresponding in the cup, discernment control circuit is used for through discerning the type of stirring sword subassembly comes the discernment to correspond the cup. In some embodiments, couplers at the bottoms of the plurality of cups of the food processor can be arranged as the same type of coupler, so that the equipment management is convenient and the cost is low.

Further, the cooking machine includes the cup, at least two stirring sword subassembly replacement sets up in same in the cup. In some embodiments, a cup body can be shared by a plurality of stirring knife assemblies, and the food processor is low in cost.

Further, the food processor comprises a power end, the motor is connected to the power end, the power detection circuit comprises a voltage detection circuit and a current detection circuit, the voltage detection circuit is connected between the power end and the motor, is connected with the identification control circuit, and is used for detecting the voltage of the motor and outputting the voltage to the identification control circuit; the current detection circuit is connected between the power supply end and the motor, connected with the identification control circuit, and used for detecting the working current of the motor and outputting the working current to the identification control circuit. In some embodiments, the circuit design is simple.

Further, the voltage detection circuit includes a first voltage dividing resistor and a second voltage dividing resistor, the first voltage dividing resistor and the second voltage dividing resistor are connected in series, one end of the first voltage dividing resistor is connected between the power supply terminal and the motor, the second voltage dividing resistor is grounded, and the identification control circuit is connected between the first voltage dividing resistor and the second voltage dividing resistor. In some embodiments, the first voltage dividing resistor and the second voltage dividing resistor are used for dividing the voltage of the power source terminal, so as to prevent the identification control circuit from being damaged due to the input of an excessive voltage into the identification control circuit.

Further, the voltage detection circuit includes an electrolytic capacitor, an anode of the electrolytic capacitor is connected between the first voltage-dividing resistor and the second voltage-dividing resistor, and a cathode of the electrolytic capacitor is grounded. In some embodiments, the electrolytic capacitor may make the voltage output from the voltage detection circuit to the recognition control circuit more stable.

Furthermore, the voltage detection circuit comprises a current-limiting resistor, one end of the current-limiting resistor is connected with the identification control circuit, and the other end of the current-limiting resistor is connected between the first voltage-dividing resistor and the second voltage-dividing resistor.

Further, the voltage detection circuit comprises at least two first voltage dividing resistors. In some embodiments, in the case that the voltage at the power supply terminal is too high, the plurality of first voltage-dividing resistors divide the voltage at the power supply terminal better, so as to prevent the first voltage-dividing resistors and the second voltage-dividing resistors from being burned out.

Further, the current detection circuit comprises a detection resistor, the detection resistor is connected with one end of the power supply end in series, and the identification control circuit is connected between the detection resistor and the power supply end. In some embodiments, fewer circuit materials are used, and the circuit structure is simple.

Further, the circuit detection circuit comprises a zero ohm resistor, and the zero ohm resistor is connected between the identification control circuit and the detection resistor. In some embodiments, the zero ohm resistors may enable the circuit board to be more widely and flexibly used and may be used in different applications

The cooking machine in some embodiments of this application includes a plurality of stirring knife tackle spares of replaceable, power detection circuit and discernment control circuit, and power detection circuit is connected with the motor, and discernment control circuit is connected with power detection circuit, so utilizes the type of power detection circuit and discernment control circuit discernment stirring sword, and the coupler that the cup set up of cooking machine can be unified, the management of being convenient for, reduce cost.

Drawings

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

fig. 2 is a partial cross-sectional view of the food processor of fig. 1;

fig. 3 is a circuit block diagram of the food processor in fig. 1;

fig. 4 is a circuit diagram of a voltage detection circuit of the food processor in fig. 3;

fig. 5 is a circuit diagram of a current detection circuit, a switching circuit and a power supply circuit of the food processor in fig. 3;

fig. 6 is a circuit diagram of an identification control circuit of the food processor in fig. 3;

fig. 7 is a circuit diagram of a motor driving circuit of the food processor in fig. 3;

fig. 8 is a circuit diagram of a zero-cross detection circuit of the food processor in fig. 3.

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 defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention 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. 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 perspective view of an embodiment of a food processor 800 provided by the present application. Fig. 2 is a partial cross-sectional view of the food processor 800 of fig. 1. Fig. 3 is a circuit block diagram of the food processor 800 in fig. 1. The food processor 800 comprises a plurality of stirring

blade assemblies

811, 812 and 813 which can be replaced, as well as a motor 802, a motor driving circuit 30, a power detection circuit 10 and an identification control circuit 20. Wherein, motor 802 and stirring

knife subassembly

811, 812, 813 can be dismantled and connected, and motor 802 rotates and drives the stirring

knife subassembly

811, 812, 813 that connects and rotate. The motor drive circuit 30 is connected to the motor 802 for driving the motor 802. The power detection circuit 10 is connected to the motor 802 for detecting an electrical signal indicative of power when the motor 802 rotates at a set rotational speed. The identification control circuit 20 is connected to the motor driving circuit 30 and the power detection circuit 10, and is used for controlling the motor driving circuit 30 to drive the motor 802 to rotate at a set rotating speed, and identifying the type of the

stirring blade assembly

811, 812, 813 according to the electric signal of the motor 802 detected by the power detection circuit 10.

In some embodiments, the plurality of stirring

blade assemblies

811, 812, 813 are used to realize different functions of the food processor 800, for example, the stirring blade assembly 811 may be used to realize functions of squeezing juice and shaving ice of the food processor, the stirring blade assembly 812 may be used to realize functions of beating bean milk and making rice paste of the food processor, and the stirring blade assembly 813 may be used to realize functions of kneading dough. In some embodiments, the different types of stirring

blade assemblies

811, 812, 813 have different structures, and when the different types of stirring blade assemblies 811, 812, 813 rotate at the same set rotation speed, the resistances of the different types of stirring

blade assemblies

811, 812, 813 are different, and the power required by the motor 802 to drive the

stirring blade assemblies

811, 812, 813 to rotate at the same set rotation speed is different. The power detection circuit 10 may detect the power of the motor 802 rotating at a set rotation speed. The identification control circuit 20 can identify the different

stirring blade assemblies

811, 812, 813 based on the power of the motor 802 detected by the power detection circuit 10. In some embodiments, after the identification control circuit 20 identifies the types of the

stirring blade assemblies

811, 812, 813, corresponding control is performed according to the types of the

stirring blade assemblies

811, 812, 813, for example, the rotation speeds of the

stirring blade assemblies

811, 812, 813 are controlled according to the types of the

stirring blade assemblies

811, 812, 813, so as to achieve the whipping requirements in different scenarios, for example, when the stirring blade assembly is identified as the stirring blade assembly 813 for dough kneading, the motor 802 may be controlled to rotate at a lower speed; when recognizing that the blender blade assembly is the blender blade assembly 811 for shaving ice, juicing, etc., the motor 802 may be controlled to rotate at a higher speed.

In some embodiments, the identification control circuit 20 receives the electrical signal indicative of the power of the motor 802 detected by the power detection circuit 10 when the motor 802 rotates at the set rotation speed, determines the power of the motor 802, and compares the determined power with a plurality of reference powers to determine the type of the

stirring blade assembly

811, 812, 813. The reference power is used for identifying the power required by the motor 802 to drive the corresponding

stirring blade assemblies

811, 812 and 813 to rotate at a set rotating speed. In some embodiments, the reference power is the power required by the motor 802 to rotate the

stirring blade assemblies

811, 812, 813 at 13000 r/min. The reference power of the

stirring blade assemblies

811, 812 and 813 of different types is different. In some embodiments, the power detection circuit 10 detecting the electrical signal indicative of power when the motor 802 is rotating at the set rotational speed includes detecting a drive voltage and a drive current when the motor 802 is rotating at the set rotational speed.

The food processor 800 comprises a plurality of replaceable

stirring knife assemblies

811, 812, 813, a power detection circuit 10 and an identification control circuit 20, wherein the power detection circuit 10 is connected with a motor 802, the identification control circuit 20 is connected with the power detection circuit 10, the types of the stirring

knife assemblies

811, 812 and 813 are determined by detecting an electric signal representing power when the motor 802 drives the stirring

knife assemblies

811, 812 and 813 to rotate at a set rotating speed, a plurality of corresponding couplers of different types are not required to be respectively arranged in the food processor 800 aiming at the stirring

knife assemblies

811, 812 and 813, and the couplers of the food processor 800 can be unified, are convenient to manage and reduce the cost; meanwhile, the food processor 800 can be more flexible in structural design, for example, a plurality of stirring

blade assemblies

811, 812, 813 can respectively correspond to a plurality of cups, and a plurality of stirring

blade assemblies

811, 812, 813 can also correspond to one cup.

In some embodiments, the food processor 800 includes a plurality of

cups

821, 822, 823, the plurality of blending

knife assemblies

811, 812, 813 are respectively disposed in the corresponding plurality of

cups

821, 822, 823, and the identification control circuit 20 is configured to identify the corresponding

cups

821, 822, 823 by identifying the types of the blending

knife assemblies

811, 812, 813. The plurality of

cup bodies

821, 822 and 823 may include a hot mixing cup, a cold mixing cup, a dry grinding cup and/or a dough mixing cup, etc. to achieve different functions and make different foods. Wherein, the hot stirring cup can be used for stirring and heating food materials, and can be used for making soybean milk, rice paste and the like. The cold stirring cup can be used for stirring food materials, and can be used for making juice, minced meat, shaved ice and the like. The grinding cup can be used for grinding powder, making jam, etc. The dough kneading cup can be used for kneading dough and the like. Different

stirring blade assemblies

811, 812 and 813 are provided corresponding to the functional uses of the

cups

821, 822 and 823, respectively, so that the stirring work corresponding to the functional uses of the

cups

821, 822 and 823 can be realized.

In some embodiments, the identification control circuit 20 controls the motor 802 to drive the stirring

blade assemblies

811, 812 and 813 in the

cups

821, 822 and 823 to rotate at a set rotation speed, for example, 13000r/min, and then determines the power of the motor 802 according to the electric signal representing the power of the motor 802 detected by the power detection circuit 10, and identifies the types of the

stirring blade assemblies

811, 812 and 813, and further identifies the type of the cup. In one example, when the motor 802 drives the

stirring blade assemblies

811, 812, 813 in the

cup bodies

821, 822, 823 to rotate at 13000r/min, if the power of the motor 802 is about 140W, it means that the

cup bodies

821, 822, 823 are grinding cups; if the power of the motor 802 is about 170W, the

cup bodies

821, 822 and 823 are cold mixing cups; when the power of the motor 802 is about 150W, the

cups

821, 822, 823 are indicated as hot mixing cups. In some embodiments, after determining the type of the

cup bodies

821, 822, 823, the recognition control circuit 20 controls the food processor 800 to perform corresponding operations, for example, when the cup body is a hot stirring cup, the recognition control circuit 20 may control the food processor 800 to perform operations such as heating, anti-overflow, etc.; for example, if the cup body is a cold mixing cup, the recognition control circuit 20 may control the food processor 800 to perform operations such as vacuuming and/or cooling, so as to preserve food materials. In some embodiments, the couplers at the bottoms of the plurality of

cups

821, 822, 823 included in the food processor 800 of the present application may be configured as the same type of coupler, so that the equipment management is convenient and the cost is low.

In other embodiments, at least two

blender knife assemblies

811, 812, 813 may alternatively be disposed within the same cup 821. In some embodiments, at least two

stirring blade assemblies

811, 812, 813 are used to perform different functions of the food processor 800, for example, the stirring blade assembly 811 may be used for stirring to make juice, shaved ice, etc.; the stirring blade assembly 812 may be used to make soybean milk, rice paste, etc. by stirring. When the stirring blade assembly 811 is mounted in the cup body 821, the cup body 821 is used as a cold cup; when the stirring blade assembly 812 is mounted in the cup 821, the cup 821 is used as a hot cup. In some embodiments, the identification control circuit 20 identifies the type of the

stirring blade assemblies

811, 812 and 813 in the cup body 821, identifies the use type of the cup body 821 according to the types of the

stirring blade assemblies

811, 812 and 813, and then controls the food processor 800 to perform corresponding operations. For example, when the cup body 821 is used as a cold cup, the food material in the cup body 821 can be preserved; when the cup body 821 is used as a hot cup, the food material in the cup body 821 may be heated. In this embodiment, it is not necessary to set a plurality of cups including different types of cup bottom couplers for identifying a plurality of stirring

blade assemblies

811, 812, 813, so that the food processor 800 has a simple structure and a reduced cost.

In some embodiments, the food processor 800 includes a host 801. The motor 802, the motor drive circuit 30, the power detection circuit 10, and the identification control circuit 20 are provided in the host 801. In some embodiments, the food processor 800 includes

power terminals

804, 805, the motor 802 is connected to the

power terminals

804, 805, the power detection circuit 10 includes a voltage detection circuit 101 and a current detection circuit 102, the voltage detection circuit 101 is connected between the power terminal 804 and the motor 802, and is connected to the recognition control circuit 20 for detecting the voltage of the motor 802 and outputting the detected voltage to the recognition control circuit 20. The current detection circuit 102 is connected between the power source terminal 805 and the motor 802, and is connected to the recognition control circuit 20, and is configured to detect an operating current of the motor 802 and output the operating current to the recognition control circuit 20. In other embodiments, the voltage detection circuit 101 is connected between the power terminal 805 and the motor 802, or the current detection circuit 102 is connected between the power terminal 804 and the motor 802.

In some embodiments,

power terminals

804, 805 are connected to power supply 90. The power supply 90 provides alternating current, such as mains power, for driving the motor 802. The power supply 90 includes a live line L and a neutral line N. The power end 804 of the food processor 800 is connected to the live line L of the power supply 90, and the power end 805 is connected to the neutral line N of the power supply 90. In some embodiments, when the motor 802 drives the

stirring blade assemblies

811, 812 and 813 to rotate at the set rotating speed, the identification control circuit 20 determines the power of the motor 802 according to the voltage of the motor 802 output by the voltage detection circuit 101 and the current of the motor 802 output by the current detection circuit 102, and judges the types of the

stirring blade assemblies

811, 812 and 813 according to the power of the motor 802. In the present embodiment, the voltage detection circuit 101 is connected between the power source terminal 804 and the motor 802, and the current detection circuit 102 is connected between the power source terminal 805 and the motor 802.

In some embodiments, the food processor 800 includes the switch circuit 60, which is connected between the power source end 804 and the motor 802, and is used for controlling the on-off of the circuit between the power source end 804 and the motor 802, so as to ensure the safety of the food processor 800 in the use process, for example, the switch circuit 60 can be set to be turned on when the cup cover of the food processor 800 is covered, and turned off when the cup cover is opened, so that when the cup cover of the food processor 800 is opened by a user for operation, the switch circuit 60 is turned off, the motor 802 is powered off, so as to prevent the motor 802 from rotating to rotate the

stirring blade assembly

811, 812, 813 and injure the user when.

In some embodiments, the food processor 800 comprises a zero-crossing detection circuit 70 connected between the power source terminal 804 and the recognition control circuit 20 for detecting a zero-crossing point of the alternating current output by the power source 90 and generating a zero-crossing signal to the recognition control circuit 20. In some embodiments, the food processor 800 includes a power circuit 92, and the power circuit 90 is connected to the

power terminals

804 and 805 for converting the ac power output by the power circuit 90 into dc power to provide the operating voltage for the identification control circuit 20, the switch circuit 60, and the motor driving circuit 30.

In some embodiments, the food processor 800 includes a heating plate 803 for heating the food material, for example, when the recognition control circuit 20 recognizes that the cup 822 is a hot cup, the heating plate 803 may be controlled to heat the food material in the cup 822. The heating plate 803 may be connected between the motor drive circuit 30 and the switch circuit 60, and the motor drive circuit 30 may also be used to drive the heating plate 803. In other embodiments, the food processor 800 includes a heating disk drive circuit independent of the motor drive circuit 30 for driving the heating disk 803.

Fig. 4 is a circuit diagram of the voltage detection circuit 101 of the food processor 800 in fig. 3. Fig. 5 is a circuit diagram of the current detection circuit 102, the switch circuit 60, and the power supply circuit 92 of the food processor 800 in fig. 3. Fig. 6 is a circuit diagram of the identification control circuit 20 of the food processor 800 in fig. 3. Fig. 7 is a circuit diagram of the motor driving circuit 30 of the food processor 800 in fig. 3. Fig. 8 is a circuit diagram of the zero-cross detection circuit 70 of the food processor 800 in fig. 3.

Referring to fig. 3-8, in some embodiments, switching circuit 60 includes a voltage output terminal COM-L. The voltage output end COM-L is connected with a power supply end 804 of the food processor 800. One end of the motor 802 is connected to the power supply terminal 804 of the food processor 800 through the voltage output terminal COM-L, and the other end is connected to the power supply terminal 805 of the food processor 800 through the motor driving circuit 30. When the food processor 800 works, the power end 804 is connected to the live line L of the power supply 90, the power end 805 is connected to the neutral line N of the power supply 90, and the power supply 90 provides a driving voltage for the food processor 800 through the power ends 804 and 805. The switch circuit 60 controls the on/off between the power source terminal 804 and the motor 802, and the motor drive circuit 30 controls the on/off between the power source terminal 805 and the motor 802.

The voltage detection circuit 101 comprises a detection voltage input end VIN and a detection voltage output end V-AD, wherein the detection voltage input end VIN is connected between the power end 804 and the motor 802, and the detection voltage output end V-AD is connected with the identification control circuit 20. The current detection circuit 102 includes a detection current output terminal I-AD connected to the recognition control circuit 20. The zero-cross detection circuit 70 includes a zero-cross detection input terminal L2. The zero-cross detection input end L2 is connected with the voltage output end COM-L.

Referring to fig. 4-5, in some embodiments, the voltage detection circuit 101 includes a first voltage-dividing resistor R302 and a second voltage-dividing resistor R304, the first voltage-dividing resistor R302 and the second voltage-dividing resistor R304 are connected in series, one end of the first voltage-dividing resistor R302 is connected between a power supply terminal 804 and the motor 802, the second voltage-dividing resistor R304 is connected to ground, and the identification control circuit 20 is connected between the first voltage-dividing resistor R302 and the second voltage-dividing resistor R304. In some embodiments, one end of the first voltage divider circuit R302 is connected between the power source terminal 804 and the motor 802 through the voltage input terminal VIN to collect the voltage between the

power source terminals

804, 805. The first voltage dividing resistor R302 and the second voltage dividing resistor R304 are used to divide the voltage between the

power source terminals

804 and 805, and prevent an excessively high voltage from being input to the recognition control circuit 20 and causing damage to the recognition control circuit 20. In other embodiments, one end of the first voltage dividing resistor R302 is connected between the power terminal 805 and the motor 802 to collect the voltage between the

power terminals

804 and 805.

In some embodiments, the voltage detection circuit 101 includes an electrolytic capacitor C301, the anode of the electrolytic capacitor C301 is connected between the first voltage dividing resistor R302 and the second voltage dividing resistor R304, and the cathode of the electrolytic capacitor C301 is grounded. The electrolytic capacitor C301 can stabilize the voltage output from the voltage detection circuit 101 to the recognition control circuit 20. In some embodiments, the voltage detection circuit 101 includes a current limiting resistor R303, and one end of the current limiting resistor R303 is connected to the identification control circuit 20 through the detection voltage output terminal V-AD, and the other end is connected between the first voltage dividing resistor R302 and the second voltage dividing resistor R304. In some embodiments, the current limiting resistor R303 may control the current input to the identification control circuit 20 by the voltage detection circuit 101, so as to prevent the identification control circuit 20 from being damaged by the input of an excessively high current to the identification control circuit 20. In some embodiments, the voltage detection circuit 101 includes at least two first voltage dividing resistors R302 and R301, so as to divide the voltage between the

power source terminals

804 and 805 better and prevent the first voltage dividing resistor R302 and the second voltage dividing resistor R304 from being burned out in the case that the voltage between the

power source terminals

804 and 805 is too high.

Referring to fig. 5, in some embodiments, the current sensing circuit 102 includes a sensing resistor R4, the sensing resistor R4 is connected in series with one of the

power terminals

804, 805, and the identification control circuit 20 is connected between the sensing resistor R4 and the

power terminals

804, 805. In some embodiments, the detection current output terminal I-AD is disposed between the detection resistor R4 and the

power terminals

804 and 805, and the identification control circuit 20 is connected to the current detection circuit 102 through the detection current output terminal I-AD to collect the current of the motor 802. The detection resistor R4 is used for detecting the current on the motor 802, and the identification control circuit 20 detects the current on the motor 802 by detecting the current on the detection resistor R4, so that fewer circuit materials are used, and the circuit structure is simple. In some embodiments, the circuit detection circuit 102 includes a zero ohm resistor RA4, the zero ohm resistor RA4 being connected between the identification control circuit 20 and the detection resistor R4. A zero ohm resistor R4 is used across two contacts on the circuit board. Zero ohm resistance R4 is used for discerning the control circuit 20 and detects the electric current size on the detection circuitry R4 when welding on the circuit board, and when zero ohm resistance R4 was not welded, discerning control circuit 20 and live wire L or zero line N disconnection, can be arranged in the application that need not current detection, make the application of circuit board more extensive, more nimble, can be applied to in the application of difference.

Referring to fig. 5-6, the switch circuit 60 is connected to the identification control circuit 20 through a KEY1 terminal, and the identification control circuit 20 controls the on/off of the switch circuit 60 through a KEY1 terminal. The switching circuit 60 includes a transistor Q601, a relay D402, and an optocoupler U4. The switch of the relay D402 is connected with the power supply end 804 and the motor 802, the triode Q601 is connected with the coil of the relay D402, and the optical coupler U4 is connected between the triode Q601 and the identification control circuit 20. In some embodiments, the open and close of the lid of the food processor 800 controls the on and off of the transistor Q601, and the recognition control circuit 20 controls the on and off of the relay D402, thereby controlling the on and off between the power source 804 and the motor 802. When the cup cover is opened, the emitting electrode of the triode Q601 is disconnected with the ground, the triode Q601 is cut off, the relay D402 is disconnected, so that the power supply end 804 is disconnected with the motor 802, and the motor 802 is powered off; when the cup cover is closed, the emitting electrode of the triode Q601 is grounded, and the identification control circuit 20 controls the on-off of the switch circuit 60. The recognition control circuit 20 controls the conduction of the optical coupler U4 and the conduction of the triode Q601, so that the relay D402 is conducted, the power supply end 804 and the motor 802 are conducted, and the motor 802 is electrified and can work. In some embodiments, the power circuit 92 includes an isolated power circuit 922 and a non-isolated power circuit 921, the isolated power circuit 922 for outputting an isolated dc voltage and the non-isolated power circuit 921 for outputting a non-isolated dc voltage.

Referring to fig. 4-8, in some embodiments, the identification control circuit 20 may include a controller MCU1, such as a microprocessor, for example, a single chip microcomputer. The controller MCU1 is connected with the detection voltage output end V-AD of the voltage detection circuit 101 and the detection current output end I-AD of the current detection circuit 102, receives the voltage input by the voltage detection circuit 101 and the input current of the current detection circuit 102, determines the actual power of the motor 802, and compares the actual power with the reference power, thereby determining the types of the stirring

knife assemblies

811, 812 and 813. In some embodiments, the controller MCU1 is further connected to a zero-crossing detection input terminal L2 of the zero-crossing detection circuit 70, and outputs a control signal to control the motor driving circuit 30 via the Triac terminal according to the zero-crossing point of the voltage detected by the zero-crossing detection circuit 70, so as to control the motor 802 to rotate at a predetermined speed.

Referring to fig. 6-7, in some embodiments, the motor driving circuit 30 includes a SCR20, a control electrode of the SCR20 is connected to the Triac terminal of the identification control circuit 20, and the identification control circuit 20 controls the on-time of the SCR20 according to the zero-crossing point information of the ac voltage input by the zero-crossing detection circuit 70, thereby controlling the rotation speed of the motor 802.

Referring to fig. 3, in some embodiments, the ZERO-crossing detecting circuit 70 includes a diode D105 and an output terminal ZERO, the ZERO-crossing detecting circuit 70 is connected to the power source terminal 804, the output terminal ZERO of the ZERO-crossing detecting circuit 70 is connected to the recognition control circuit 20, the diode D105 is turned off when the alternating current crosses ZERO, and the output terminal ZERO outputs a ZERO-crossing signal to the recognition control circuit 20. The recognition control circuit 20 controls the on time of the motor drive circuit 30 based on the zero-cross signal to control the rotation speed of the motor 802.

The food processer 800 of this application drives the power when stirring

sword subassembly

811, 812, 813 rotate with the settlement rotational speed through detecting motor 802, judges the type of stirring

sword subassembly

811, 812, 813, need not to set up the multiple type coupler that corresponds with stirring

sword subassembly

811, 812, 813 for food processer 800's coupler can be unified, has reduced the administrative cost of multiple type coupler, and simultaneously, also makes food processer 800's structural design more nimble.

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. A food processor, comprising:

a plurality of replaceable blender knife assemblies (811);

the motor (802) is detachably connected with the stirring knife component (811), and the motor (802) rotates to drive the connected stirring knife component (811) to rotate;

a motor drive circuit (30) connected to the motor (802) for driving the motor (802);

the power detection circuit (10) is connected to the motor (802) and is used for detecting an electric signal representing power when the motor (802) rotates at a set rotating speed; and

and the identification control circuit (20) is connected with the motor (802) driving circuit and the power detection circuit (10) and is used for controlling the motor (802) driving circuit to drive the motor (802) to rotate at a set rotating speed and identifying the type of the stirring knife assembly (811) according to the electric signal of the motor (802) detected by the power detection circuit (10).

2. The food processor of claim 1, comprising a plurality of cups (821), wherein the plurality of stirring blade assemblies (811) are respectively arranged in the corresponding cups (821), and the identification control circuit (20) is used for identifying the corresponding cups (821) by identifying the type of the stirring blade assembly (811).

3. The food processor of claim 1, characterized in that the food processor comprises a cup body (821), and at least two stirring knife assemblies (811) are replaceably arranged in the same cup body (821).

4. The food processor according to any one of claims 1 to 3, wherein the food processor comprises a power supply terminal, the motor (802) is connected to the power supply terminal, the power detection circuit (10) comprises a voltage detection circuit (101) and a current detection circuit (102), the voltage detection circuit (101) is connected between the power supply terminal (90) and the motor (802) and is connected with the identification control circuit (20) for detecting the voltage of the motor (802) and outputting the voltage to the identification control circuit (20); the current detection circuit (102) is connected between the power supply end and the motor (802), is connected with the identification control circuit (20), and is used for detecting the working current of the motor (802) and outputting the working current to the identification control circuit (20).

5. The food processor as claimed in claim 4, wherein the voltage detection circuit (101) comprises a first voltage dividing resistor and a second voltage dividing resistor, the first voltage dividing resistor and the second voltage dividing resistor are connected in series, one end of the first voltage dividing resistor is connected between the power supply end and the motor (802), the second voltage dividing resistor is connected to ground, and the identification control circuit (20) is connected between the first voltage dividing resistor and the second voltage dividing resistor.

6. The food processor as claimed in claim 5, wherein the voltage detection circuit (101) comprises an electrolytic capacitor, the anode of the electrolytic capacitor is connected between the first voltage-dividing resistor and the second voltage-dividing resistor, and the cathode of the electrolytic capacitor is grounded.

7. The food processor as claimed in claim 5, wherein the voltage detection circuit (101) comprises a current limiting resistor, one end of the current limiting resistor is connected to the identification control circuit (20), and the other end of the current limiting resistor is connected between the first voltage dividing resistor and the second voltage dividing resistor.

8. The food processor of claim 5, wherein the voltage detection circuit (101) comprises at least two first voltage dividing resistors.

9. The food processor as defined in claim 4, wherein the current detection circuit (102) comprises a detection resistor connected in series with one of the power terminals, the identification control circuit (20) being connected between the detection resistor and the power terminal.

10. The food processor of claim 9, wherein the current detection circuit (102) comprises a zero ohm resistor connected between the identification control circuit (20) and the detection resistor.