CN213757934U - Food processor - Google Patents

Abstract

The application provides cooking machine, its stirring tool bit liftable and be connected with liquid detection circuitry, the liftable through the stirring tool bit and liquid detection circuitry's cooperation is in order to detect the height that whether eat material liquid and reach stirring tool bit lower extreme. The cooking machine comprises a host, a stirring tool bit and a liquid detection circuit. Wherein, the stirring cup can be borne on the host. The host computer is located of stirring tool bit liftable be located stirring cup top, the stirring tool bit can move to not co-altitude position in the stirring cup. The liquid detection circuit is electrically connected with the stirring tool bit and is used for detecting the height of the food material liquid reaching the lower end of the stirring tool bit.

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. The food processor can comprise a soybean milk machine, a stirrer or a wall breaking food processor and other machines for crushing and stirring food materials. At present, a food processor on the market can not well detect the position of food materials in a cup generally.

SUMMERY OF THE UTILITY MODEL

The utility model provides a food processor, its stirring tool bit liftable and be connected with liquid detection circuitry, the liftable through the stirring tool bit and liquid detection circuitry's cooperation is in order to detect the height that whether the edible material liquid reachs stirring tool bit lower extreme.

In order to achieve the above object, an embodiment of the present invention provides a food processor, which includes:

a host;

the stirring cup can be borne on the host;

the stirring tool bit is arranged on the host in a lifting manner and is positioned above the stirring cup, and the stirring tool bit can move to different height positions in the stirring cup;

and the liquid detection circuit is electrically connected with the stirring tool bit and is used for detecting the height of the food material liquid reaching the lower end of the stirring tool bit. In some embodiments, through the cooperation of the liftable stirring tool bit and the liquid detection circuit to detect the height of the lower end of the stirring tool bit, a detection device additionally arranged for detecting the height of the food liquid can be saved.

Optionally, the host computer is equipped with control circuit board, the last master control circuit that is equipped with of control circuit board, master control circuit with liquid detection circuitry connects for master control circuit can be according to liquid detection circuitry's testing result control the operating condition of cooking machine, liquid detection circuitry's setting is convenient for master control circuit controls some operating condition of cooking machine.

Optionally, the bottom of the stirring cup is grounded, and the liquid detection circuit can detect an equivalent resistance between the stirring tool bit and the bottom of the stirring cup; the liquid detection circuit comprises a divider resistor connected with the stirring tool bit and a direct current power supply end, the main control circuit comprises a liquid detection end, and the liquid detection end is connected with the divider resistor and the stirring tool bit, and can detect whether liquid contacts with the stirring tool bit. In some embodiments, the equivalent resistance between divider resistance and stirring tool bit to the cup bottom of cooking machine carries out the partial pressure to in obtaining liquid testing result, can realize the detection of liquid position, and the circuit is simple, and the reliability is high.

Optionally, the liquid detection circuit includes a first filter capacitor, and the first filter capacitor is connected between the voltage dividing resistor and a ground terminal; in some embodiments, the first filter capacitor is arranged to stabilize a liquid detection result signal acquired by the main control circuit and to prevent interference signals from being removed; or the like, or, alternatively,

the liquid detection circuit comprises a second filter capacitor, and the second filter capacitor is connected between the liquid detection end and the ground end of the main control circuit; in some embodiments, the liquid detection result signal collected by the main control circuit is stable, and interference signals are eliminated.

Optionally, the liquid detection circuit includes a current-limiting resistor, and the current-limiting resistor is connected between the stirring tool bit and the liquid detection end. In some embodiments, the current limiting resistor is configured to protect the liquid detection end of the main control circuit.

Optionally, the cooking machine is equipped with heating element, the host computer is equipped with dirver circuit board, dirver circuit board be equipped with can with the heating drive circuit that the heating element electricity is connected, heating drive circuit is connected with main control circuit, main control circuit can be according to liquid detection circuitry's testing result control heating drive circuit drives heating element's operating condition. In some embodiments, the control of the heating assembly of the food processor is more timely and effective.

Optionally, the host computer is equipped with lift drive and drive circuit board, lift drive with stirring tool bit drive connection, drive circuit board is equipped with lift drive circuit, lift drive circuit with the lift drive is connected, just lift drive circuit is connected with the master control circuit electricity, the master control circuit can control the drive of lift drive circuit the lift of stirring tool bit. In some embodiments, the main control circuit controls the driving circuit to drive the stirring tool bit to ascend and descend, so that the automatic control of the ascending and descending of the stirring tool bit is realized, and the accuracy of the ascending and descending height of the stirring tool bit is higher.

Optionally, master control circuit includes the anti-overflow module, the anti-overflow module can be based on the edible material that liquid detection circuitry detected overflows liquid and arrives the detection result of predetermineeing the anti-overflow height, controls the cooking machine carries out the anti-overflow and handles. In some embodiments, the anti-overflow probe is not required to be installed, the anti-overflow can be realized through the matching of the liftable stirring tool bit and the liquid detection circuit, the arrangement of the anti-overflow probe can be reduced, and the cost is favorably reduced.

Optionally, the main control circuit comprises a distance presetting module, the distance presetting module can determine a preset anti-overflow height according to the initial height of the food material liquid, and the main control circuit can control the lifting driving circuit to drive the stirring tool bit to lift according to the preset anti-overflow height. In some embodiments, the stirring cutter head is lifted to a preset anti-overflow height, which is beneficial to ensuring the anti-overflow function.

Optionally, the difference between the preset anti-overflow height and the initial height of the food material liquid is 2cm-8 cm. In some embodiments, the direct height difference between the stirring cutter head and the initial height of the food material liquid is controlled within a certain range, so that the anti-overflow function is further ensured.

Optionally, the main control circuit includes a boiling judging module, and the boiling judging module can determine whether the food material is boiled according to a detection result of the liquid detection circuit. In some embodiments, need not to install and judge the probe that boils, through the cooperation of the stirring tool bit of liftable and liquid detection circuitry, can realize judging and boil, reducible setting of judging the probe that boils is favorable to reducing the cost, realizes the multi-functionalization of cooking machine.

Optionally, master control circuit is including preventing dry combustion method module, prevent dry combustion method module can liquid detection circuit detects when eating material liquid and not reach preset dry combustion method height, control the cooking machine prevents dry combustion method and handles. In some embodiments, the cooperation through the stirring tool bit of liftable and liquid detection circuitry can realize preventing dry combustion method, is favorable to protecting the cooking machine to avoid the damage that dry combustion method brought, can prolong the life of cooking machine.

Drawings

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

Fig. 1 is a perspective structural view of a food processor according to an exemplary embodiment of the present application;

fig. 2 is a schematic cross-sectional view of the food processor shown in fig. 1 in a stirring mode of operation;

fig. 3 is a schematic cross-sectional view of the food processor shown in fig. 1 in a heating mode of operation;

FIG. 4 is a circuit diagram of a master control circuit and a liquid detection circuit according to an exemplary embodiment of the present application;

fig. 5 is a flow chart of one embodiment of a cooking method 400;

fig. 6 is a flowchart illustrating an embodiment of a cooking method 500.

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. "plurality" includes two, and is equivalent to at least two. 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.

The cooking barrel can be applied to a cooking machine and is used as a component of the cooking machine. The processor can be a wall breaking machine, a juice extractor, a soybean milk machine, a flour-mixing machine, a cooking machine and the like, and can also be other food making appliances with heating function.

In this embodiment, the food processor is provided with a whipping device and a heating device, and has the functions of whipping food materials and heating food materials. Moreover, the food processor is also provided with a control device for integrally controlling the operation of the whipping device, the heating device and other components.

Fig. 1 is a perspective structural view of a food processor according to an exemplary embodiment of the present application, please refer to fig. 1, and refer to fig. 2 to 6 as necessary.

Referring to fig. 2 and 3, the food processor 100 includes a main body 1b, a stirring cup 2, and a stirring blade head 3. Host computer 1b can provide the electric energy, and host computer 1b is equipped with control circuit board 15, and this control circuit board 15 is equipped with master control circuit 101, can control the operating condition of cooking machine. The stirring cup 2 can be supported on the main body 1 b. Stirring tool bit 3 liftable locate host computer 1b and be located stirring cup 2 tops, and stirring tool bit 3 can remove the not co-altitude position in stirring cup 2.

In some embodiments, the main machine 1b is provided with a lifting driving device 18 and a driving circuit board 16, the lifting driving device 18 is in driving connection with the stirring tool head 3, the driving circuit board 16 is provided with a lifting driving circuit, the lifting driving circuit is electrically connected with the lifting driving device 18, and the lifting driving circuit is electrically connected with the main control circuit 101, and the main control circuit 101 can control the lifting driving circuit to drive the lifting driving device 18 to drive the lifting of the stirring tool head 3.

In some embodiments, the main body 1b is provided with a stirring motor 17. The stirring motor 17 is in driving connection with the stirring tool bit 3. The driving circuit board 16 is provided with a stirring driving circuit, the stirring driving circuit is electrically connected with the stirring motor 17, and the stirring driving circuit is electrically connected with the main control circuit 101, and the main control circuit 101 can control the stirring driving circuit to drive the stirring operation of the stirring tool bit 3.

Referring to fig. 2 to 4, in some embodiments, the food processor includes a liquid detection circuit 102. The liquid detection circuit 102 may be provided on the control circuit board 15. The liquid detection circuit 102 is electrically connected to the stirring head 3, and can detect whether the food liquid reaches the height of the lower end of the stirring head 3. The main control circuit 101 is connected to the liquid detection circuit 102, and can control the operating state of the food processor according to the detection result of the liquid detection circuit 102. The height of whether the liquid of the food material reaches the lower end of the stirring head as referred to herein may be understood as a height of whether the liquid or the foam overflowing upward during the heating or boiling of the food material reaches the lower end of the stirring head in some embodiments, and may also be understood as a height of whether the initial height of the liquid of the food material reaches the lower end of the stirring head in some embodiments.

Further, the bottom of the mixing cup 2 is provided with a heating assembly 22. The drive circuit board 16 is provided with a heating drive circuit capable of electrically connecting with the heating element 22. The heating driving circuit may be connected to the main control circuit 101, and the main control circuit 101 may control the heating driving circuit to drive the heating element 22 according to the detection result of the liquid detection circuit 102, for example, control the heating element to stop heating, start heating, and increase or decrease the heating power of the heating element.

In some embodiments, the bottom of the blender cup 2 is grounded. The liquid detection circuit 102 has a bit connection FLOW. The bit connecting end FLOW is connected to the stirring bit 3. Stirring tool bit 3 can be equivalent to a resistance to the bottom of cup, and when foam or liquid bumped stirring tool bit 3, stirring tool bit 3 was equivalent to electrically conductive formation return circuit to the bottom of cup, so equivalent resistance's resistance diminishes, otherwise, if foam and liquid etc. did not touch stirring tool bit, equivalent resistance's resistance is very big. Therefore, the liquid detection circuit 102 can detect the resistance of the equivalent resistor between the stirring head 3 and the bottom of the stirring cup 2, and determine whether the food liquid contacts the stirring head 3, thereby determining whether the food liquid reaches the height of the lower end of the stirring head 3.

Correspondingly, the main control circuit 101 has a signal receiving end FLOW', which is connected to the tool bit connecting end FLOW, and can receive the detection result of the liquid detection circuit 102. Specifically, when the food material liquid contacts the stirring tool bit 3, the liquid detection circuit 102 may generate a liquid contact signal due to the equivalent resistance change between the stirring tool bit 3 and the cup bottom of the stirring cup 2, and transmit the liquid contact signal as a detection result to the signal receiving end FLOW' of the main control circuit 101 through the tool bit connection end FLOW.

In some embodiments, the bottom of the blender cup 2 is provided with an upper coupler 24, and the main body 1b is provided with a lower coupler 14 capable of mating with the upper coupler 24. The driving circuit board 16 is provided with a ground terminal. The cup bottom of the stirring cup 2 is grounded through the grounding wire 11 connected to the grounding terminal of the driving circuit board 16 through the lower coupler 14. Of course, the stirring cup can also be realized by connecting other components of the cup bottom of the stirring cup to the grounding end of the driving circuit board, for example, the grounding end of the heating disc component and the driving circuit board can be used.

Further, in some embodiments, the liquid detection circuit 102 includes a voltage dividing resistor R1 connecting the stirring head 3 to a dc power source, and the main control circuit 101 includes a liquid detection terminal OF connected between the voltage dividing resistor R1 and the stirring head 3, and capable OF detecting whether the liquid is in contact with the stirring head 3. The liquid detection circuit 102 has a corresponding loop detection end OF' connected to the liquid detection end OF. The liquid detection port OF may be provided with a sensor (not shown) or a connection port to which the sensor can be connected. The sensor is connected with the stirring tool bit 3. When the stirring bit 3 comes into contact with the food material liquid, the liquid detection end OF can detect a loop forming signal, and can transmit the loop forming signal to the liquid detection circuit 102 through the loop detection end OF'.

Further, in some embodiments, the liquid detection circuit 102 includes a first filter capacitor C1, and the first filter capacitor C1 is connected between the voltage divider resistor R1 and ground. The first filter capacitor C1 is arranged to stabilize the liquid detection result signal collected by the main control circuit 101, thereby preventing the interference signal.

The liquid detection circuit 102 includes a second filter capacitor C2 connected between the liquid detection terminal OF the main control circuit 101 and ground. The second filter capacitor C2 also makes the liquid detection result signal collected by the main control circuit 101 more stable, and prevents the interference signal.

Further, the liquid detection circuit 102 includes a current limiting resistor R2, and the current limiting resistor R2 is connected between the mixer head 3 and the liquid detection end OF to protect the liquid detection end OF the main control circuit 101.

It should be noted that, in some other embodiments, the bottom of the stirring cup may also be not grounded, and a liquid detection loop is formed by the stirring blade and another metal member that can contact the food material liquid at the same time or earlier than the stirring blade. The present application is not limited to this, and may be set according to a specific application environment.

Further, in some embodiments, the main control circuit 101 includes an anti-overflow module, and the anti-overflow module can control the food processor to perform an anti-overflow process according to a detection result that the food material overflow liquid (such as overflow liquid or foam) detected by the liquid detection circuit 102 reaches a preset anti-overflow height. For example, the heating element 22 may be driven to stop heating, or the heating power may be reduced, by controlling the heating driving circuit. Of course, an anti-overflow reminding signal (for example, a voice reminding signal or a warning sound reminding signal) can be sent out, and accordingly, the food processor needs to be provided with a reminding device.

In some embodiments, the main control circuit 101 includes a distance presetting module, the distance presetting module can determine a preset anti-overflow height according to an initial height of the food material liquid, and the main control circuit 101 can control the lifting driving circuit to drive the stirring tool bit 3 to lift according to the preset anti-overflow height. The initial height of the food material liquid is herein understood to be the height of the liquid (or liquid level) in the cooking cup before the food material is heated.

The initial height referred to herein is understood to be the height at which the foodstuff is added to the blender cup and is not subjected to the heating process. This initial height can be determined by the liquid detection circuit 102 described above in conjunction with a liftable stirring blade 3. That is, when the mixer head 3 touches the liquid, the liquid detection circuit 102 may generate a liquid touch signal and transmit the liquid touch signal to the main control circuit 101. The main control circuit 101 may determine the current height of the blending tool bit 3 and thus the initial height of the food liquid. After determining the initial height of the food material liquid, the main control circuit 101 may control the lifting driving circuit to drive the lifting driving device to ascend, and drive the blending tool bit 3 to ascend to a preset anti-overflow height.

Of course, the initial height of the food material liquid can also be determined in other ways, which is not limited in the present application and can be set according to the specific application environment.

In some embodiments. The difference value between the anti-overflow height and the initial height of the food material liquid is preset to be 2-8 cm. Specifically, the specific value of the difference may be determined according to the initial height of the liquid of the food material, for example, when the initial height is larger, the determined difference is relatively larger, and when the initial height is smaller, the determined difference is relatively smaller. Of course, the determination of the difference value may also be performed by combining other conditions such as a specific food material type, which is not limited in the present application.

In some embodiments, the main control circuit 101 includes a boiling determining module, and the boiling determining module can determine whether the food material is boiling according to the detection result of the liquid detection circuit 102. Similarly, the stirring tool bit 3 can be moved to a height position for determining boiling, when the food material boils and overflows and rises to contact with the stirring tool bit 3, the liquid detection circuit 102 can generate a liquid detection signal and transmit the liquid detection signal as a detection result to the main control circuit, so that boiling determination is realized.

In some embodiments, the main control circuit 101 includes an anti-dry heating module, and the anti-dry heating module can control the food processor to perform anti-dry heating processing when the food material liquid detected by the liquid detection circuit 102 does not reach a preset dry heating height, so that loss caused by dry heating of the food processor can be effectively avoided or reduced. For example, the heating element 22 may be driven to stop heating, or the heating power may be reduced, by controlling the heating driving circuit. Of course, a dry burning prevention reminding signal (for example, a voice reminding, a warning sound reminding, etc.) can be sent out, and accordingly, the food processor needs to be provided with a reminding device. The liquid food material does not reach the preset dry-burning height, in some embodiments, the initial height of the liquid food material does not reach the preset dry-burning height, and in some embodiments, the overflow liquid food material does not reach the preset dry-burning height.

In some embodiments, the anti-dry heating module can work before the food processor enters the heating operation. Of course, the dry-heating prevention module may also operate during a heating operation. The preset dry-burning height can be understood as a minimum height required by the liquid in the food processor when the food processor works in some embodiments. The preset dry-cooking height can be set according to the specific conditions of the function of the food processor, the environment, the food material type and the like.

Specifically, when the stirring tool bit 3 is moved to the preset dry-burning height in the stirring cup, if the food material liquid does not reach the preset dry-burning height, the stirring tool bit 3 is not in contact with the food material liquid, the equivalent resistance between the stirring tool bit 3 and the cup bottom of the stirring cup 2 is unchanged, the liquid detection circuit 102 does not generate a liquid contact signal, and the main control circuit 101 can determine that the food material liquid does not reach the preset dry-burning height according to the fact that the signal receiving terminal FLOW' does not receive the liquid contact signal.

Fig. 5 is a flowchart illustrating an embodiment of a cooking method 400. Is suitable for the food processor 100. As necessary, the above-described fig. 1 to 4 may be combined. The cooking method 400 comprises steps 401-408.

In step 401, the food processor 100 is turned on, which can be understood as the system power of the food processor is turned on.

In step 402, the food processor 100 enters the operating mode of the selected function according to the menu selection function.

In step 403, the master control circuit 101 determines whether heating is required. This step may be determined based on the selected function or whether the heating assembly is operating. This is not limited in this application.

In step 404, in the case where it is determined that heating is required, the blender bit 3 is moved to a preset spill prevention height.

In step 405, the food processor 100 enters a heating mode. It should be noted that in some embodiments, this step 405 may be performed after the mixer head 3 is moved to the preset spill-proof height, or may be performed while the mixer head 3 is moved to the preset spill-proof height.

In step 406, it is determined whether the blender bit 3 contacts the food material liquid. And may be determined based on whether the master control circuit receives the liquid contact signal generated by the liquid detection circuit 102.

In step 407, in the heating process, when it is detected that the blending bit 3 contacts the food material liquid, the anti-overflow process may be performed. For example, the heating element 22 may be driven to stop heating, or the heating power may be reduced, by controlling the heating driving circuit. Of course, an anti-overflow reminding signal (for example, a voice reminding signal or a warning sound reminding signal) can be sent out, and accordingly, the food processor needs to be provided with a reminding device.

In step 408, when the contact of the stirring tool bit 3 with the food material liquid is not detected during the heating process, the operation mode of the selected function can be continuously executed, and the subsequent operation flow of the selected function is executed.

In the case of no conflict, the embodiment of the food processing method 400 and the structural embodiment of the food processing machine 100 can be complementary. The relevant parts of the cooking method 400 can refer to the description of the above embodiments, and are not described herein again.

Fig. 6 is a flowchart illustrating an embodiment of a cooking method 500. Is suitable for the food processor 100. As necessary, the above-described fig. 1 to 4 may be combined. The cooking method 500 comprises steps 501-507. In step 501, the food processor 100 is turned on, which can be understood as the system power of the food processor is turned on.

In step 502, the food processor 100 enters the operating mode of the selected function according to the menu selection function.

In step 503, the main control circuit 101 determines whether heating is required or whether to enter a heating mode. This step may be determined based on the selected function or whether the heating assembly is operating. This is not limited in this application.

In step 504, in the case where it is determined that heating is required or heating mode is entered, the blender head 3 is moved to a preset spill prevention height.

In step 505, it is determined whether the blender head 3 contacts the food material liquid. And may be determined based on whether the master control circuit receives the liquid level contact signal generated by the liquid detection circuit 102.

In step 506, when it is not detected that the blending tool bit 3 contacts the food material liquid, the dry burning prevention process may be performed. For example, the heating assembly 22 may be controlled not to heat, or the heating power may be reduced. Of course, an anti-overflow reminding signal (for example, a voice reminding signal or a warning sound reminding signal) can be sent out, and accordingly, the food processor needs to be provided with a reminding device.

In step 507, when it is detected that the blending tool bit 3 contacts the food material liquid, the operation mode of the selected function may be continuously executed, and the subsequent operation flow of the selected function is executed.

In the case of no conflict, the embodiment of the cooking method 500 and the configuration embodiment of the cooking machine 100 can be complementary. The relevant parts of the cooking method 500 can also refer to the description of the above embodiments, and are not described herein again.

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 (12)

1. A food processor, its characterized in that, it includes:

a host (1 b);

a stirring cup (2) which can be carried on the main machine (1 b);

the stirring tool bit (3) is arranged on the host (1b) in a lifting manner and is positioned above the stirring cup (2), and the stirring tool bit (3) can be moved to different height positions in the stirring cup (2);

and the liquid detection circuit (102) is electrically connected with the stirring tool bit (3) and is used for detecting whether the food liquid reaches the height of the lower end of the stirring tool bit (3).

2. The food processor according to claim 1, wherein the host (1b) is provided with a control circuit board (15), the control circuit board (15) is provided with a main control circuit (101), the main control circuit (101) is connected with the liquid detection circuit (102), and the operating state of the food processor can be controlled according to the detection result of the liquid detection circuit (102).

3. The food processor as claimed in claim 2, wherein the bottom of the stirring cup (2) is grounded, and the liquid detection circuit (102) can detect the equivalent resistance from the stirring tool bit (3) to the bottom of the stirring cup (2); liquid detection circuitry (102) is including connecting stirring tool bit (3) divider resistance (R1) to the direct current power end, master control circuit (101) are including liquid detection end (OF), liquid detection end (OF) connect in divider resistance (R1) with between stirring tool bit (3), can detect liquid with whether stirring tool bit (3) contact.

4. The food processor of claim 3, wherein the liquid detection circuit (102) comprises a first filter capacitor (C1), the first filter capacitor (C1) is connected between the voltage divider resistor (R1) and ground; or the like, or, alternatively,

the liquid detection circuit (102) comprises a second filter capacitor (C2) connected between the liquid detection end (OF) OF the main control circuit (101) and the ground.

5. The food processor OF claim 3, wherein the liquid detection circuit (102) comprises a current limiting resistor (R2), the current limiting resistor (R2) being connected between the stirring bit (3) and the liquid detection end (OF).

6. The food processor as claimed in claim 2, wherein the food processor is provided with a heating assembly (22), the host (1b) is provided with a driving circuit board (16), the driving circuit board (16) is provided with a heating driving circuit which can be electrically connected with the heating assembly (22), the heating driving circuit is connected with a main control circuit (101), and the main control circuit (101) can control the heating driving circuit to drive the working state of the heating assembly (22) according to the detection result of the liquid detection circuit (102).

7. The food processor according to claim 2, wherein the main machine (1b) is provided with a lifting driving device (18) and a driving circuit board (16), the lifting driving device (18) is in driving connection with the stirring tool bit (3), the driving circuit board (16) is provided with a lifting driving circuit, the lifting driving circuit is electrically connected with the lifting driving device (18), the lifting driving circuit is electrically connected with a main control circuit (101), and the main control circuit (101) can control the lifting driving circuit to drive the stirring tool bit (3) to lift.

8. The food processor as claimed in claim 7, wherein the main control circuit (101) comprises an anti-overflow module, and the anti-overflow module can control the food processor to perform anti-overflow processing according to the detection result that the food material detected by the liquid detection circuit (102) overflows and liquid reaches a preset anti-overflow height.

9. The food processor as claimed in claim 7, wherein the main control circuit (101) comprises a distance presetting module, the distance presetting module can determine a preset anti-overflow height according to the initial height of the food material liquid, and the main control circuit (101) can control the lifting driving circuit to drive the stirring tool bit (3) to lift according to the preset anti-overflow height.

10. The food processor of claim 9, wherein the difference between the preset spill prevention height and the initial height of the food material liquid is 2cm-8 cm.

11. The food processor as claimed in claim 2, wherein the main control circuit (101) comprises a boiling determining module, and the boiling determining module can determine whether the food material is boiled or not according to the detection result of the liquid detection circuit (102).

12. The food processor of claim 2, wherein the main control circuit (101) comprises an anti-dry heating module, and the anti-dry heating module can control the food processor to perform anti-dry heating processing when the liquid detection circuit (102) detects that the food material liquid does not reach a preset dry heating height.

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