Food processor and soybean milk outlet piece returning method thereof

Abstract

The invention discloses a food processing machine and a milk outlet piece returning method thereof.The food processing machine comprises a smashing cup body, a rotary valve, a valve element detection module, a milk nozzle and a milk nozzle detection module, and the rotary valve and the smashing cup body are selectively communicated through a rotatable valve element; the valve element can drive the slurry nozzle to rotate between the first liquid receiving level and the second liquid receiving level through the clutch assembly. The valve element detection module is used for detecting the current state of a rotary valve. The slurry nozzle detection module is used for detecting the current position of a slurry nozzle. The returning method for the pulp outlet piece comprises the steps that before pulp making work is started, if the current position of a pulp nozzle is unknown, a valve element is controlled to rotate in the first rotating direction till the current position of the pulp nozzle is updated to be a preset returning position; and after the current position of the slurry nozzle is updated to the second liquid receiving level, the valve element is controlled to continue rotating or stop rotating according to the first rotating direction based on the current state of the rotary valve till the current state of the rotary valve is in the preset return state. Therefore, the return device has the advantages of accurate and efficient return and cost saving.

Description

Technical Field

[0001] This application relates to the technical field of food processing machines, and more specifically, to a food processing machine and a method for returning the discharge part to its original position. Background Technology

[0002] In related technologies, food processors feature detachable nozzles, grinding cups, and even rotary valves to improve ease of use, handling, and cleaning. When users need to manually change containers to collect slurry or wastewater, the nozzle is typically assembled onto the machine body in a fixed position (or in other words, its installation direction is fixed) and connected to the liquid outlet of the grinding cup via the rotary valve.

[0003] To improve the automation and intelligence of the entire process of food processing machines and reduce manual operation steps for users, the related technology uses a rotatable nozzle, allowing the nozzle outlet to be aligned with the slurry receiving position or the wastewater receiving position by rotation. The valve core also has an open position that can connect to the liquid outlet and a closed position that can block the liquid outlet. Correspondingly, when installing the nozzle onto the machine body, the user does not need to install it in a fixed installation direction; the direction of the nozzle outlet end only needs to be between the slurry receiving position and the wastewater receiving position.

[0004] Therefore, after the user assembles and powers on the food processor with a rotatable nozzle, before starting the pulping process, the valve core and nozzle must first be aligned. That is, the food processor needs to adjust the valve core and nozzle to the designated positions before starting the pulping operation. To accurately adjust the valve core and nozzle to the designated positions, the food processor needs to determine the initial position of the nozzle before adjustment. However, considering factors such as cost, nozzle position recognition accuracy, and installation space, it is difficult for the food processor to accurately identify the initial and real-time positions of the nozzle by setting up numerous recognition modules (such as induction magnets and Hall elements) within the nozzle's rotatable range. Furthermore, interference between numerous recognition modules can easily lead to incorrect recognition results.

[0005] Therefore, there is an urgent need for a new return control method for food processing machines, which can control the rotary valve and the nozzle to return efficiently and accurately with a small number of simple detection elements, and reduce abnormal alarm problems when the nozzle is installed in the food processing machine with an unknown orientation. Summary of the Invention

[0006] The purpose of this application is to provide a food processing machine and a method for returning the pulping parts to their original positions. Before the food processing machine starts pulping, the valve core is controlled to rotate according to the detected current position of the pulp nozzle and the current state of the rotary valve, so that both the rotary valve and the pulp nozzle return to their designated positions accurately. Therefore, this application has the advantages of accurate and simple return and cost-saving.

[0007] The embodiments of this application are implemented as follows:

[0008] The first aspect of this application provides a method for returning the dispensing component of a food processor to its original position. The food processor includes a grinding cup, a rotary valve, a valve core detection module, a dispensing nozzle, and a dispensing nozzle detection module. The rotary valve and the grinding cup are selectively connected via a rotatable valve core. The valve core can drive the dispensing nozzle to rotate between a first liquid inlet position and a second liquid inlet position via a clutch assembly. The valve core detection module is used to detect the current state of the rotary valve, and the dispensing nozzle detection module is used to detect the current position of the dispensing nozzle. The method for returning the dispensing component of the food processor includes: before starting the pulping operation, if the current position of the dispensing nozzle is unknown, controlling the valve core to rotate in a first rotation direction until the current position of the dispensing nozzle is updated to the second liquid inlet position; the second liquid inlet position is a preset return position of the dispensing nozzle, and the first rotation direction is the rotation direction from the first liquid inlet position to the second liquid inlet position; after the current position of the dispensing nozzle is updated to the second liquid inlet position, based on the current state of the rotary valve, controlling the valve core to continue rotating or stop rotating in the first rotation direction until the current state of the rotary valve is in the preset return state.

[0009] In conjunction with the technical solution provided in the first aspect above, in some embodiments, before the control valve core rotates in the first rotation direction until the current position of the nozzle is updated to the second liquid contact position, the method for returning the discharge component to its original position further includes: controlling the valve core to rotate in the second rotation direction until the current position of the nozzle is updated to the first liquid contact position, and / or until the rotation angle of the valve core is greater than a preset transition angle; the second rotation direction is opposite to the first rotation direction.

[0010] In conjunction with the technical solution provided in the first aspect above, in some embodiments, before starting the pulping operation, the method for returning the pulp outlet to its original position further includes: if the current position of the pulp nozzle is the first liquid contact position, the control valve core rotates in the first rotation direction until the current position of the pulp nozzle is updated to the second liquid contact position; if the current position of the pulp nozzle is the second liquid contact position and the current state of the rotary valve is not in the preset return state, the control valve core rotates in the first rotation direction until the current state of the rotary valve is updated to the preset return state; if the current position of the pulp nozzle is the second liquid contact position and the current state of the rotary valve is in the closed state, the control valve core stops rotating and generates a prompt message indicating that the return of the pulp outlet is complete.

[0011] In conjunction with the technical solution provided in the first aspect above, in some embodiments, the preset return position of the nozzle is the waste discharge position, and the preset return state of the rotary valve is the closed state.

[0012] In conjunction with the technical solution provided in the first aspect above, in some embodiments, if the current position of the nozzle is unknown or at the first liquid contact level, the nozzle return method further includes: before the current position of the nozzle is updated to the second liquid contact level, continuously timing the action of the valve core rotating in the first rotation direction as the cumulative return time of the nozzle; when the cumulative return time of the nozzle is greater than the preset return time, generating nozzle not in position information.

[0013] In conjunction with the technical solution provided in the first aspect above, in some embodiments, the shut-off maintenance angle corresponding to the actual shut-off state of the rotary valve is greater than the transition angle corresponding to the position of the nozzle rotating from the first liquid contact position to the second liquid contact position.

[0014] A second aspect of this application provides a food processing machine, comprising: a body, a grinding cup, a rotary valve, a nozzle, a return circuit, and a main control chip. The grinding cup is detachably disposed within the body; the rotary valve and the grinding cup are selectively connected via a rotatable valve core; the nozzle is connected to the valve core via a clutch assembly; the return circuit includes a drive control module, a valve core detection module, and a nozzle detection module, all electrically connected to the main control chip; the drive control module drives the rotary valve motor to rotate, thereby rotating the valve core; the valve core detection module detects the current state of the rotary valve; and the nozzle detection module detects the current position of the nozzle.

[0015] In conjunction with the technical solution provided in the second aspect above, in some embodiments, the drive control module includes an H-bridge drive circuit and a motor connection terminal. The signal input terminal of the H-bridge drive circuit is connected to the signal output terminal of the main control chip; the motor is connected to the signal output terminal of the H-bridge drive circuit via the motor connection terminal.

[0016] In conjunction with the technical solution provided in the second aspect above, in some embodiments, the valve core detection module includes a valve core detection magnet, a first Hall effect sensor, a second Hall effect sensor, a first resistor, and a second resistor. The valve core detection magnet is located at the top of the valve core and can rotate with the valve core. Both the first and second Hall effect sensors are housed within the main body, and their output pins are connected to the main control chip. When the rotary valve is in the closed state, the first Hall effect sensor can be triggered by the valve core detection magnet and output a first level. When the rotary valve is in the open state, the second Hall effect sensor can be triggered by the valve core detection magnet and output a first level. The first resistor is connected to the output pin of the first Hall effect sensor, and the second resistor is connected to the output pin of the second Hall effect sensor. The resistance values ​​of the first and second resistors correspond to the first level.

[0017] In conjunction with the technical solution provided in the second aspect above, in some embodiments, the nozzle detection module includes: a nozzle detection magnet, a third Hall effect sensor, a fourth Hall effect sensor, a third resistor, and a fourth resistor. The nozzle detection magnet is located at the top of the nozzle and can rotate with it. Both the third and fourth Hall effect sensors are housed within the machine body, and their output pins are connected to the main control chip. When the nozzle is in the first liquid contact position, the third Hall effect sensor is triggered by the nozzle detection magnet and outputs a second level signal. When the rotary valve is in the connected state, the fourth Hall effect sensor is triggered by the nozzle detection magnet and outputs a second level signal. The third resistor is connected to the output pin of the third Hall effect sensor, and the fourth resistor is connected to the output pin of the fourth Hall effect sensor. The resistance values ​​of the third and fourth resistors correspond to the second level signal.

[0018] The advantages of this application compared to the prior art are:

[0019] This application solves the problem in related technologies where the nozzle, after being inserted into an unknown position, is difficult to accurately return to its original position. Before starting the pulping process, when the nozzle's current position is unknown, this application controls the valve core to rotate the nozzle in a first rotation direction pointing towards or near the preset return position, so that the nozzle preferentially returns to the preset return position. Then, the food processor controls the valve core to continue rotating in the first rotation direction, limiting and blocking the nozzle at the preset return position, preventing it from rotating to other positions until the rotary valve is in the preset return state. Based on this solution, the food processor can achieve efficient and accurate nozzle and rotary valve return with simpler control logic, and only requires a small number of simple detection modules to support the return control of the pulping parts. Therefore, this application saves costs and reduces false alarms caused by complex control logic, ensuring smooth operation of the food processor and effectively improving the user experience.

[0020] Furthermore, this embodiment sets the off state as the preset return state of the rotary valve, improving the airtightness of the food processor in the non-draining state and alleviating the problem of accidental leakage of food and liquid from the nozzle into the grinding cup. This embodiment also sets the waste discharge position as the preset return position of the nozzle, mitigating the problem of accidental liquid discharge contaminating the receiving cup and improving the pulping quality of the food processor. In this embodiment, the control valve core rotates sufficiently in the second rotation direction, improving the tightness of the nozzle assembly and rotary valve engagement, thereby improving the synchronization of the valve core's rotation of the nozzle and the accuracy of the nozzle's return, and also improving the nozzle's return speed. Position efficiency; Before the nozzle rotates to the preset return position, this application continuously times the nozzle return action and compares the cumulative return time of the nozzle with the preset return time to accurately determine whether the nozzle is missing, improving the working intelligence of the food processing machine. Moreover, the method of detecting missing nozzles in the food processing machine is simpler and more efficient, improving the user experience; The closing holding angle is greater than the position transition angle, which can improve the problem of material leakage during the return of the dispensing component, reduce the number of rotations of the valve core during the return of the dispensing component, so that both the nozzle and the rotary valve can return to their positions as soon as possible, improving the return efficiency and return quality of the dispensing component. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 is a structural schematic diagram of a food processing machine provided in an embodiment of this application; wherein, Figure 1(a) is an overall cross-sectional schematic diagram of a food processing machine provided in an embodiment of this application; Figure 1(b) is a partial exploded schematic diagram of a food processing machine provided in an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure of the slurry outlet component provided in one embodiment of this application;

[0024] Figure 3 is a cross-sectional schematic diagram of a slurry outlet component provided in an embodiment of this application; wherein, Figure 3(a) is an overall cross-sectional schematic diagram of a slurry outlet component provided in an embodiment of this application; Figure 3(b) is a cross-sectional schematic diagram of a slurry outlet component when the rotary valve is in the closed state provided in an embodiment of this application; Figure 3(c) is a cross-sectional schematic diagram of a slurry outlet component when the rotary valve is in the connected state provided in an embodiment of this application.

[0025] Figure 4 This is an exploded schematic diagram of a rotary valve provided in one embodiment of this application;

[0026] Figure 5This is an exploded view of a nozzle assembly provided in one embodiment of this application;

[0027] Figure 6 A schematic diagram of the circuit structure of a valve core detection module provided in an embodiment of this application;

[0028] Figure 7 A schematic diagram of the circuit structure of a nozzle detection module provided in an embodiment of this application;

[0029] Figure 8 A schematic diagram of the circuit structure of a drive control module provided in an embodiment of this application;

[0030] Figure 9 This is a schematic flowchart of a method for returning the slurry outlet to its original position according to an embodiment of this application;

[0031] Figure 10 is a schematic diagram showing that the initial state of the rotary valve and the initial position of the nozzle are both known according to an embodiment of this application; wherein, Figure 10(a) shows that the initial state of the rotary valve is closed and the initial position of the nozzle is the discharge position according to an embodiment of this application; Figure 10(b) shows that the initial state of the rotary valve is connected and the initial position of the nozzle is the discharge position according to an embodiment of this application; Figure 10(c) shows that the initial state of the rotary valve is closed and the initial position of the nozzle is the waste discharge position according to an embodiment of this application; Figure 10(d) shows that the initial state of the rotary valve is connected and the initial position of the nozzle is the waste discharge position according to an embodiment of this application.

[0032] Figure 11 This is a schematic diagram showing the positions of the valve core and the nozzle in a slurry outlet component provided in an embodiment of this application, where both are unknown.

[0033] Figure 12 is a schematic diagram of a pulp outlet component provided in an embodiment of the present application, in which only the position of the pulp nozzle is known; wherein, Figure 12(a) is a schematic diagram of a pulp nozzle initially positioned as a waste discharge position provided in an embodiment of the present application; Figure 12(b) is a schematic diagram of a pulp outlet component provided in an embodiment of the present application where the initial position of the pulp nozzle is a pulp discharge position;

[0034] Figure 13 is a schematic diagram of the slurry outlet component provided in an embodiment of the present application, in which only the position of the valve core is known; wherein, Figure 13(a) is a schematic diagram of the rotary valve in the initial state of the present application being closed; Figure 13(b) is a schematic diagram of the rotary valve in the initial state of the present application being connected.

[0035] Reference numerals: 1 - Food processing machine; 10 - Machine body; 11 - Machine frame; 12 - Machine cover; 101 - Installation slot; 102 - Liquid outlet slot; 20 - Grinding cup; 200 - Drain outlet; 30 - Slurry receiving cup; 40 - Wastewater box; 50 - Slurry outlet component; 51 - Rotary valve; 511 - Valve core; 5111 - Liquid inlet; 5112 - Liquid outlet; 512 - Valve housing; 5121 - First valve housing; 5122 - Second valve housing; 513 – Valve core detection module; 5131 – Valve core detection magnet; 5132 – Valve core Hall effect detection board; 514 – Drive unit; 5141 – Rotary valve motor; 5142 – Drive gear; 5143 – Driven gear; 515 – Clutch assembly; 5151 – Clutch drive gear ring; 5152 – Clutch driven gear ring; 5153 – First nozzle attraction magnet; 5154 – Second nozzle attraction magnet; 5155 – Elastic element; 5 16 - Sealing sleeve; 52 - Nozzle assembly; 521 - Nozzle; 522 - Housing; 523 - Nozzle detection module; 5231 - Nozzle detection magnet; 5232 - Nozzle Hall effect detection board; 61 - Valve core detection module; 611 - First Hall effect sensor; 612 - Second Hall effect sensor; 613 - First resistor; 614 - Second resistor; 615 - First current-limiting resistor; 62 - Nozzle detection module; 621 - Third Hall effect sensor; 622 - Fourth Hall effect sensor; 623 - Third resistor; 624 - Fourth resistor; 625 - Second current-limiting resistor; 63 - Drive control module; 631 - H-bridge drive circuit; 632 - Motor connection terminal; 633 - Electrolytic capacitor; 70 - Nozzle moving area; 71 - Off state; 72 - On state; 73 - Unknown state; 74 - Slurry discharge position; 75 - Waste discharge position; 76 - Unknown position. Detailed Implementation

[0036] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0037] Similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings.

[0039] Please refer to Figure 1, which is a structural schematic diagram of a food processing machine 1 provided in an embodiment of this application. Figure 1(a) is a schematic cross-sectional view of the food processing machine 1 provided in an embodiment of this application; Figure 1(b) is a partial exploded view of the food processing machine 1 provided in an embodiment of this application.

[0040] As shown in Figure 1, the food processing machine 1 includes a body 10, a grinding cup 20, a receiving cup 30, a wastewater box 40, and a discharging component 50. The grinding cup 20 is detachably housed within the body 10. The body 10 includes a cover 12 and a frame 11, with the cover 12 pivotally connected to the top of the frame 11. The frame 11 has an installation space 101 and a discharging space 102, which communicate to allow the nozzle 521 of the discharging component 50 to pass through. The grinding cup 20 and the discharging component 50 are located within the installation space 101, while the receiving cup 30 and the wastewater box 40 can be placed within the discharging space 102. When the cover 12 is fastened to the frame 11, it covers the installation space 101.

[0041] Furthermore, the pulp outlet component 50 includes a rotary valve 51 and a pulp nozzle assembly 52. ​​The rotary valve 51 is selectively connected to the pulverizing cup 20 via a rotatable valve core 511; the pulp nozzle 521 in the pulp nozzle assembly 52 is connected to the valve core 511, and the pulp nozzle assembly 52 is located at the bottom end of the rotary valve 51.

[0042] Please see Figure 2 To Figure 3, Figure 2 Figure 3 is a structural schematic diagram of the slurry outlet component 50 provided in an embodiment of this application; Figure 3 is a cross-sectional schematic diagram of the slurry outlet component 50 provided in an embodiment of this application. Among them, Figure 3(a) is an overall cross-sectional schematic diagram of the slurry outlet component 50 provided in an embodiment of this application; Figure 3(b) is a cross-sectional schematic diagram of the slurry outlet component 50 when the rotary valve 51 is in the closed state; Figure 3(c) is a cross-sectional schematic diagram of the slurry outlet component 50 when the rotary valve 51 is in the connected state.

[0043] Referring to Figures 1 to 3, the rotary valve 51 includes a valve core 511, a valve housing 512, a valve core detection module 513, a clutch assembly 515, and a drive unit 514. The drive unit 514 is connected to the valve core 511 and is used to drive the valve core 511 to rotate. The valve core 511 is rotatably disposed within the valve housing 512. The valve core detection module 513 is connected to the valve core 511 and the valve housing 512. The valve core detection module 513 is configured to detect the current state of the rotary valve, which includes an on / off state and a closed state. The clutch assembly 515 is located at the bottom end of the valve core 511, and the valve core 511 can drive the nozzle 521 to rotate within the nozzle's active area via the clutch assembly 515.

[0044] Furthermore, the bottom of the pulverizing cup 20 has a drain port 200, and the valve core 511 has an inlet 5111 and an outlet 5112 that are interconnected. The inlet 5111 is located at the top of the valve core 511 and is situated on the circumferential side wall of the valve core 511; the outlet 5112 is located on the bottom end face of the valve core 511 and coincides with the axis of the valve core 511. The orientation of the inlet 5111 rotates with the rotation of the valve core 511, and the outlet 5112 is connected to the internal channel of the nozzle 521. Referring to Figures 1 to 3(c), the rotation of the valve core 511 allows the inlet 5111 to face the pulverizing cup 20, and when the inlet 5111 is connected to the outlet 200, the rotary valve 51 is in the connected state. The rotation of the valve core 511 also allows the inlet 5111 to face away from the pulverizing cup 20, and when the inlet 5111 and outlet 200 are completely separated by the circumferential sidewall of the valve core 511, the rotary valve 51 is in the closed state. In this embodiment, regardless of whether the valve core 511 rotates clockwise or counterclockwise, the rotary valve 51 can switch from the connected state to the closed state, and vice versa.

[0045] Please see Figures 4 to 5 , Figure 4 An exploded view of the rotary valve 51 provided in one embodiment of this application; Figure 5 This is an exploded view of a nozzle assembly 52 provided in an embodiment of this application. (See Figures 1 to 12) Figure 5 As shown, the valve housing 512 includes a first valve housing 5121 and a second valve housing 5122. One end of the valve core 511 is rotatably disposed within the first valve housing 5121, and a sealing sleeve 516 is provided between the valve core 511 and the first valve housing 5121. The drive unit 514 includes a rotary valve motor 5141 (which may be a geared motor) and a drive gear 5142. The drive gear 5142, connected to the output shaft of the rotary valve motor 5141, is housed between the first valve housing 5121 and the second valve housing 5122, and meshes with a driven gear 5143 sleeved on the outside of the valve core 511. The rotary valve motor 5141 drives the valve core 511 to rotate through gear transmission. A valve core detection magnet 5131 is provided at the top of the valve core 511, and the valve core detection magnet 5131 can rotate with the valve core 511. The top of the first valve housing 5121 may be provided with a first Hall effect sensor and a second Hall effect sensor. Figure 4 Taking a valve core Hall detection board 5132 as an example, the valve core Hall detection board 5132 may have a first Hall detection element and a second Hall detection element built in. The first Hall detection element and the second Hall detection element are used to sense the valve core detection magnet 5131, thereby generating a trigger signal corresponding to the current state of the rotary valve.

[0046] The other end of the valve core 511 is housed within the second valve housing 5122 along with the clutch assembly 515. A clutch drive gear ring 5151 is fitted onto the outer peripheral sidewall of the other end of the valve core 511. The clutch assembly 515 includes a clutch drive gear ring 5151, a clutch driven gear ring 5152, a first nozzle attracting magnet 5153 and a second nozzle attracting magnet 5154, and an elastic element 5155. The clutch driven gear ring 5152 and the clutch drive gear ring 5151 have their axes coincident and their tooth profiles matched. The elastic element 5155 is located on the side of the clutch driven gear ring 5152 away from the clutch drive gear ring 5151, and the elastic element 5155 abuts against the clutch driven gear ring 5152 and the second valve housing 5122.

[0047] The nozzle assembly 52 includes a nozzle 521 and a housing 522, which is sleeved on the outer peripheral sidewall of the nozzle 521 near the valve core 511. A first nozzle attracting magnet 5153 is disposed within the second valve housing 5122 and connected to the clutch driven gear ring 5152; a second nozzle attracting magnet 5154 is disposed within the housing 522, and the number, position, and magnetic pole orientation of the second nozzle attracting magnet 5154 correspond to those of the first nozzle attracting magnet 5153. For example, the magnetic poles of the second attracting magnets facing the valve core 511 are N, S, and N in sequence, and the magnetic poles of the first attracting magnets facing the nozzle assembly 52 are S, N, and S in sequence.

[0048] In this embodiment, a nozzle limiting structure is also provided at the connection between the installation cavity 101 and the liquid outlet cavity 102. When the nozzle assembly 52 is installed into the machine body 10 and engaged with the rotary valve 51 via the clutch assembly 515, the rotation range of the nozzle 521 is limited to the nozzle active area formed by the nozzle limiting structure. The two ends of the nozzle active area correspond to the first liquid receiving position and the second liquid receiving position of the food processing machine 1, respectively, and the nozzle 521 can rotate between the first liquid receiving position and the second liquid receiving position. When the valve core 511 rotates, if the nozzle 521 has reached the limit position of the nozzle's active area (such as the first or second liquid inlet position), and the nozzle 521 can no longer rotate with the valve core 511 according to the valve core's rotation direction, the clutch driven gear ring 5152 connected to the first nozzle attracting magnet 5153 will also no longer rotate with the valve core 511 due to the attraction between the first nozzle attracting magnet 5153 and the second nozzle attracting magnet 5154. The clutch driving gear ring 5151 continuously presses down on the clutch driven gear ring 5152 as it rotates with the valve core 511. When the valve core 511 rotates, if the nozzle 521 still has room to rotate within the nozzle's active area along the valve core's rotation direction, the clutch driven gear ring 5152 connected to the first nozzle attracting magnet 5153 will mesh with the clutch driving gear ring 5151, driving the nozzle assembly 52 to continue rotating with the valve core 511 until the nozzle 521 rotates to its limit position.

[0049] Similarly, the nozzle assembly 52 also includes a nozzle detection module 523, which includes a nozzle detection magnet 5231, a third Hall effect sensor 621, and a fourth Hall effect sensor 622. The nozzle detection magnet 5231 is housed within the housing 522 and can rotate with the nozzle 521. The bottom end of the second valve housing 5122 may be provided with the third and fourth Hall effect sensors. Figure 4 Taking a nozzle Hall effect detection plate 5232 as an example, the nozzle Hall effect detection plate 5232 may have a built-in third Hall effect sensor and a fourth Hall effect sensor. The third Hall effect sensor and the fourth Hall effect sensor are used to sense the nozzle detection magnet 5231, and then generate a trigger signal corresponding to the extreme position of the nozzle 521 when the nozzle 521 rotates to the first liquid receiving position or the second liquid receiving position. In this embodiment, the two extreme positions of the nozzle's active area are the discharge position and the waste discharge position. The discharge position is the position of the nozzle 521 when the outlet of the nozzle 521 is aligned with the water receiving port of the receiving cup 30, and the waste discharge position is the position of the nozzle 521 when the outlet of the nozzle 521 is aligned with the water receiving port of the wastewater box 40. For example, when the first liquid receiving position is the discharge position, the second liquid receiving position is the waste discharge position; when the first liquid receiving position is the waste discharge position, the second liquid receiving position is the discharge position, and the rotation range of the nozzle 521 is limited to between the discharge position and the waste discharge position. In some embodiments, the position transition angle corresponding to the active area of ​​the nozzle can be 85° to 90°. The position transition angle refers to the angle required for the nozzle 521 to rotate from the first liquid receiving position to the second liquid receiving position.

[0050] In this embodiment, during rotation, the valve core 511 can drive the nozzle assembly 52 to rotate together. That is, when the valve core 511 rotates clockwise, the nozzle 521 will also rotate clockwise; when the valve core 511 rotates counterclockwise, the nozzle 521 will also rotate counterclockwise. When the nozzle 521 rotates to its limit position, it can no longer follow the valve core 511 and is limited to that position. When the magnet in the clutch assembly 515 is firmly engaged, the nozzle 521 can continue to rotate with the valve core 511 according to its rotation direction. Typically, the nozzle 521 rotates by the same angle as the valve core 511.

[0051] In this embodiment, the food processing machine 1 further includes a return circuit and a main control chip (not shown in the accompanying drawings). Both the return circuit and the main control chip are located within the machine body 10. The return circuit includes a drive control module 63, a valve core detection module 61, and a nozzle detection module 62. The drive control module 63, valve core detection module 61, and nozzle detection module 62 are all electrically connected to the main control chip. The drive control module 63 drives the rotary valve motor 5141 to rotate, thereby causing the valve core 511 to rotate. The valve core detection module 61 detects the current state of the rotary valve, and the nozzle detection module 62 detects the current position of the nozzle.

[0052] Please see Figure 6 , Figure 6 This is a schematic diagram of the circuit structure of the valve core detection module 61 provided in one embodiment of this application. Please refer to Figures 1 to 2. Figure 6 As shown, the valve core detection module 61 includes a valve core detection magnet 5131, a first Hall effect sensor 611, a second Hall effect sensor 612, a first resistor 613, and a second resistor 614. The valve core detection magnet 5131 is located at the top of the valve core 511 and can rotate with the valve core 511. The first Hall effect sensor 611 and the second Hall effect sensor 612 are both located inside the body 10 and are used to sense the valve core detection magnet 5131.

[0053] The output pins of both the first Hall effect sensor 611 and the second Hall effect sensor 612 are connected to the main control chip. When the rotary valve 51 is in the closed state, the first Hall effect sensor 611 can be triggered by the valve core detection magnet 5131 and output a first level to the main control chip. When the rotary valve 51 is in the open state, the second Hall effect sensor 612 can be triggered by the valve core detection magnet 5131 and output a first level to the main control chip. The first resistor 613 is connected to the output pin of the first Hall effect sensor 611, and the second resistor 614 is connected to the output pin of the second Hall effect sensor 612. The resistance values ​​of the first resistor 613 and the second resistor 614 correspond to the first level. In some embodiments, the first resistor 613 and the second resistor 614 are both pull-up resistors, and the resistance value of the pull-up resistor is not less than 4.7KΩ. The first level is a low level.

[0054] Specifically, the first Hall effect sensor 611 ( Figure 6 As shown in Q1) and the second Hall detection element 612 ( Figure 6 The output pin of Q2 shown ( Figure 6 The OUT pins shown are each connected to a first current-limiting resistor 615. Figure 6 R3, R4) and the main control chip (shown) Figure 6 As shown, JZ_K_1 and JZ_K_2 are connected to the main control chip's receiving signal terminals. The first current-limiting resistor 615 also serves as a filter. The first Hall effect sensor 611 ( Figure 6 As shown in Q1) and the second Hall detection element 612 ( Figure 6 The output pin of Q2 shown ( Figure 6 Each of the OUT pins shown is connected to a pull-up resistor. Figure 6 R1 and R2 are connected to the power supply; the first Hall effect sensor 611 ( Figure 6 As shown in Q1) and the second Hall detection element 612 ( Figure 6 The power supply pin of Q2 shown ( Figure 6 The VCC pin shown is connected to the power supply.

[0055] Please see Figure 7 , Figure 7 This is a schematic diagram of the circuit structure of a nozzle detection module 62 provided in one embodiment of this application. Figure 7 As shown, the nozzle detection module 62 includes: a nozzle detection magnet 5231, a third Hall effect sensor 621, a fourth Hall effect sensor 622, a third resistor 623, and a fourth resistor 624. The nozzle detection magnet 5231 is located at the top of the nozzle 521 and can rotate with the nozzle 521. The third Hall effect sensor 621 and the fourth Hall effect sensor 622 are both located inside the body 10 and are used to sense the nozzle detection magnet 5231.

[0056] The output pins of the third Hall effect sensor 621 and the fourth Hall effect sensor 622 are both connected to the main control chip. When the nozzle 521 is in the first liquid contact position, the third Hall effect sensor 621 can be triggered by the nozzle detection magnet 5231 and output a second level to the main control chip. When the rotary valve 51 is in the connected state, the fourth Hall effect sensor 622 can be triggered by the nozzle detection magnet 5231 and output a second level to the main control chip. The third resistor 623 is connected to the output pin of the third Hall effect sensor 621, and the fourth resistor 624 is connected to the output pin of the fourth Hall effect sensor 622. The resistance values ​​of the third resistor 623 and the fourth resistor 624 correspond to the second level. In some embodiments, the third resistor 623 and the fourth resistor 624 are both pull-up resistors, and the resistance value of the pull-up resistor is not less than 4.7KΩ. The second level is also low.

[0057] Specifically, the third Hall effect sensor 621 ( Figure 7 As shown in Q3) and the fourth Hall detection element 622 ( Figure 7 The output pin of Q4 shown ( Figure 7 The OUT pins shown are each connected to a second current-limiting resistor of 625Ω. Figure 7 R7, R8) and the main control chip (shown) Figure 7 As shown, JZ_K_3 and JZ_K_4 are connected to the main control chip's signal receiving terminals. The second current-limiting resistor 625 also serves as a filter. The third Hall effect sensor 621 ( Figure 7 As shown in Q3) and the fourth Hall detection element 622 ( Figure 7 The output pin of Q4 shown ( Figure 7 Each of the OUT pins shown is connected to a pull-up resistor. Figure 7 R5 and R6 are connected to the power supply; the third Hall effect sensor 621 ( Figure 7 As shown in Q3) and the fourth Hall detection element 622 ( Figure 7 The power supply pin of Q4 shown ( Figure 7 The VCC pin shown is connected to the power supply.

[0058] In this embodiment, when the Hall sensor is triggered by the detection magnet, the output pin of the Hall sensor is at a low level. The pull-up resistor, due to its large resistance, cannot effectively pull up the signal, and the main control chip receives a low-level signal. The Hall sensor being triggered by the detection magnet means that when the nozzle 521 rotates to the first or second liquid contact position, the nozzle detection magnet 5231 is directly opposite or near the third Hall sensor 621 or the fourth Hall sensor 622. The Hall sensor being triggered by the detection magnet can also mean that when the valve core 511 rotates to a designated connected or closed position, the rotary valve 51 is in a connected or closed state, and the valve core detection magnet 5131 is directly opposite or near the first Hall sensor 611 or the second Hall sensor 612. When the Hall sensor is not triggered by the detection magnet, the output pin of the Hall sensor is in a high-impedance state, and the pull-up resistor makes the main control chip receive a high-level signal. The Hall sensor not being triggered by the detection magnet means that the detection magnet is far from its corresponding Hall sensor, and the Hall sensor cannot sense the detection magnet. In this embodiment, both the rotary valve status detection and the nozzle position detection are achieved through dual Hall effect detection. The non-slurry outlet position and non-waste discharge position detected within the nozzle's active area are detection blind zones, and the output result of the nozzle's current position is an unknown position. When the valve core 511 is in a non-designated connected position or a non-designated closed position, the detection result corresponding to the rotary valve's current state is a non-connected state or a non-closed state, and the output result of the rotary valve's current state is an unknown state.

[0059] Please see Figure 8 , Figure 8 This is a schematic diagram of the circuit structure of the drive control module 63 provided in one embodiment of this application. Figure 8 As shown, the drive control module 63 includes an H-bridge drive circuit 631 and a motor connection terminal 632. The signal input terminal of the H-bridge drive circuit 631 (…) Figure 8 The IN1 and IN2 pins of U1 shown are connected to the signal output terminals of the main control chip. Figure 8 The MOTO_F and MOTO_R signals shown are connected to the motor control signals output by the control chip; the rotary valve motor 5141 is connected via motor connection terminal 632. Figure 8 As shown, CN1) and the signal output terminal of the H-bridge drive circuit 631 ( Figure 8 The OUT1 and OUT2 pins of U1 shown are connected. Furthermore, the power input terminal of the H-bridge driver circuit 631 can be connected to the electrolytic capacitor 633, which provides good energy storage and reduces interference from the drive control module 63 to the main power supply. The signal input terminals and other pins of the H-bridge driver circuit 631 are also connected to filter capacitors (such as...). Figure 8 (C6 as shown in the figure) or filter resistor (taking C6 as an example) Figure 8 (Taking R9 and R10 as examples) to effectively filter out high-frequency noise and pulse interference.

[0060] In this embodiment, when the main control chip outputs signals MOTO_F = 1 (high level) and MOTO_R = 0 (low level), the rotary valve motor 5141 rotates clockwise. When the main control chip outputs signals MOTO_F = 0 (low level) and MOTO_R = 1 (high level), the rotary valve motor 5141 rotates counterclockwise. When the main control chip outputs signals MOTO_F = 0 (low level) and MOTO_R = 0 (low level), the rotary valve motor 5141 stops rotating.

[0061] Please see Figure 9 , Figure 9 This is a flowchart illustrating a method for returning the dispensing component to its original position according to an embodiment of this application. The dispensing component includes a nozzle and a valve core. The method for returning the dispensing component to its original position can be applied to any type of food processing machine, including but not limited to the food processing machine 1 disclosed in the above embodiments of this application. The food processing machine should be able to detect at least that the nozzle is in a preset return position when rotating, and it should be able to detect at least that the valve core is in a preset return position when rotating. The method for returning the dispensing component to its original position provided in this embodiment is executed by the main control chip in the food processing machine and specifically includes the following steps.

[0062] S110: Before starting the pulping operation, if the current position of the pulp nozzle is unknown, the control valve core rotates in the first rotation direction until the current position of the pulp nozzle is updated to the second liquid receiving position.

[0063] The current position of the nozzle refers to the position where the nozzle's outlet is aligned. After the nozzle is installed at the bottom of the rotary valve, it can only rotate within the nozzle's active area along with the valve core. The two ends of the nozzle's active area are its extreme positions, namely the first liquid receiving position and the second liquid receiving position. Normally, the two extreme positions of the nozzle's active area are the slurry discharge position and the waste discharge position. The slurry discharge position means that after the slurry receiving cup is placed in place, the nozzle's outlet is aligned with the liquid receiving port of the slurry receiving cup. The waste discharge position means that after the wastewater box is installed in place, the nozzle's outlet is aligned with the liquid receiving port of the wastewater box.

[0064] In this embodiment, the second liquid inlet position is set as the preset return position of the nozzle, and the first rotation direction is the rotation direction from the first liquid inlet position to the second liquid inlet position. In this step, if the current position of the nozzle is unknown, it means that the nozzle is neither at the first liquid inlet position nor the second liquid inlet position, and the nozzle can rotate further in any rotation direction with the valve core. Therefore, the main control chip can control the valve core to drive the nozzle to rotate further in the first rotation direction, so that the nozzle returns to the preset return position, i.e., the second liquid inlet position, first.

[0065] S120: After the nozzle position is updated to the second liquid level, based on the current state of the rotary valve, control the valve core to continue rotating or stop rotating in the first rotation direction until the current state of the rotary valve is the preset return state.

[0066] The current state of the rotary valve refers to whether the inlet of the valve core is connected to the outlet of the pulverizing cup. The current state of the rotary valve typically includes a closed state, a connected state, and an unknown state. In this embodiment, the closed state means that the outlet and inlet are completely separated by the circumferential sidewall of the valve core, and the liquid flow in the pulverizing cup cannot flow into the liquid passage within the valve core at all; the connected state means that the outlet and inlet are connected or even aligned, and the liquid flow in the pulverizing cup can flow into the liquid passage within the valve core through the outlet and inlet; the unknown state means that the inlet and outlet may be connected (partially connected or completely connected) or completely isolated and closed.

[0067] In this step, after the nozzle's current position is updated from unknown to the second liquid contact position, the nozzle has reached the preset return position. To ensure that the nozzle does not move to other positions and cause subsequent repetitive adjustments, the main control chip controls the valve core to continue rotating in the first rotation direction. Thus, when the nozzle tries to continue rotating in the first rotation direction with the valve core at the second liquid contact position, it will be blocked by the nozzle limiting structure and cannot continue rotating. After the nozzle's current position is updated from unknown to the second liquid contact position, the main control chip continuously acquires the current state of the rotary valve. When the current state of the rotary valve is the preset return state, it controls the valve core to stop rotating; when the current state of the rotary valve is not the preset return state, it controls the rotary valve to continue rotating.

[0068] In the above technical solution, when the current position of the nozzle is unknown, the main control chip controls the valve core to rotate the nozzle in a first rotation direction pointing towards or near the preset return position, so that the nozzle returns to the preset return position first. Then, the main control chip controls the valve core to continue rotating in the first rotation direction, so that the nozzle is limited and blocked at the preset return position, preventing the nozzle from continuing to rotate to other positions, until the rotary valve is in the preset return state. In this way, the main control chip can efficiently and accurately realize the return of the nozzle at any position and the return of the rotary valve in any state with simpler control logic, and only requires a small number of simple detection modules (the above technical solution actually sets at least one detection module for both the nozzle and the rotary valve) to support the execution of the above return control method. Therefore, this application not only saves costs, but also reduces the false alarm problem caused by complex control logic, making the food processing machine operate smoothly and effectively improving the user experience.

[0069] Furthermore, in this embodiment, the shut-off state can be set as the preset return state of the rotary valve to improve the airtightness of the food processor in the non-draining state and alleviate the problem of food and liquid in the grinding cup accidentally flowing out from the nozzle. In this embodiment, the waste discharge position can also be set as the second liquid receiving position, that is, the waste discharge position can be set as the preset return position of the nozzle to alleviate the problem of accidental liquid discharge during subsequent processing of the food processor, which contaminates the receiving cup and the already made slurry in the receiving cup, thereby improving the slurry quality of the food processor.

[0070] Furthermore, prior to step S110, the method for returning the slurry outlet of the food processing machine to its original position also includes step S100: controlling the valve core to rotate in the second rotation direction until the current position of the slurry nozzle is updated to the first liquid receiving position, and / or until the rotation angle of the valve core is greater than the preset transition angle; the second rotation direction is opposite to the first rotation direction.

[0071] Specifically, the preset transition angle is greater than or equal to the position transition angle, that is, the preset transition angle is greater than or equal to the total angle corresponding to the nozzle's active area. In the above technical solution, the main control chip controls the valve core to rotate a sufficient angle in the second rotation direction, which can alleviate the situation where the nozzle assembly does not fully engage with the rotary valve when it is installed, improve the reliability of the nozzle assembly engaging with the rotary valve, thereby improving the nozzle jamming problem, improving the rotational synchronization and nozzle return accuracy when the valve core subsequently drives the nozzle to rotate, and improving the nozzle return efficiency.

[0072] In some embodiments, if the current position of the nozzle is unknown, the nozzle return method further includes: before the current position of the nozzle is updated to the second liquid inlet position, continuously timing the action of the valve core rotating in the first rotation direction as the cumulative return time of the nozzle; when the cumulative return time of the nozzle is greater than the preset return time, generating nozzle not in position information.

[0073] In the above technical solution, the timing of the nozzle return action is continuously recorded before the nozzle returns to the preset return position. The cumulative return time of the nozzle is compared with the preset return time to accurately determine whether the nozzle is missing. This alleviates the problem of the food processor continuously rotating because it cannot detect that the nozzle has returned to the designated position, improves the intelligence of the food processor, and makes the method of detecting missing nozzles simpler and more efficient, thus enhancing the user experience.

[0074] In some embodiments, the shut-off holding angle corresponding to the actual shut-off state of the rotary valve is greater than the position transition angle corresponding to the rotation of the nozzle from the first liquid inlet position to the second liquid inlet position. Specifically, the position transition angle refers to the maximum rotation angle that the nozzle can achieve by rotating in a fixed rotation direction; the actual shut-off state of the rotary valve means that the drain port and the inlet port are completely separated by the circumferential sidewall of the valve core, and no medium in the pulverizing cup can enter the inlet port through the drain port; the shut-off holding angle refers to the maximum angle that the valve core can rotate in a fixed rotation direction when the rotary valve is in the actual shut-off state.

[0075] In the above technical solution, the shut-off maintenance angle is greater than the transition angle of the nozzle 521 when it switches from the first liquid contact position to the second liquid contact position. This can alleviate the problem of material leakage during the return of the slurry outlet, reduce the number of rotations of the valve core during the return of the slurry outlet, and enable both the nozzle and the rotary valve to return to their original positions as soon as possible, thereby improving the return efficiency and quality of the slurry outlet.

[0076] Before the food processor is powered on and before the pulping and return control processes begin, the initial states of the rotary valve and the pulp nozzle detected by the food processor can have various combinations. For different initial states of the rotary valve and the pulp nozzle, the return method of the pulp outlet of the food processor can execute the above steps S110 to S120. For specific return details, please refer to the following embodiments. In the following embodiments, the preset return state of the rotary valve is the off state 71, the preset return position of the pulp nozzle is the waste discharge position 75, and the first rotation direction is the rotation direction of the pulp nozzle 521 from the pulp discharge position 74 to the waste discharge position 75.

[0077] Please refer to Figure 10. Figure 10 is a schematic diagram showing that the initial state of the rotary valve and the initial position of the nozzle are known in an embodiment of this application. In particular, Figure 10(a) shows that the initial state of the rotary valve is closed (71) and the initial position of the nozzle is the discharge position (74) in an embodiment of this application; Figure 10(b) shows that the initial state of the rotary valve is connected (72) and the initial position of the nozzle is the discharge position (74) in an embodiment of this application; Figure 10(c) shows that the initial state of the rotary valve is closed (71) and the initial position of the nozzle is the waste discharge position (75) in an embodiment of this application; Figure 10(d) shows that the initial state of the rotary valve is connected (72) and the initial position of the nozzle is the waste discharge position (75) in an embodiment of this application.

[0078] As shown in Figure 10(a), if the food processing machine 1 is powered on and detects that the initial state of the rotary valve is closed (71) and the initial position of the nozzle is the discharge position (74), the main control chip first controls the valve core 511 to rotate in the second rotation direction from the waste discharge position (75) to the discharge position (74). After the current state of the rotary valve is updated to the connected state (72), or after the valve core has rotated a fixed angle, the main control chip controls the valve core to switch its rotation direction and rotate in the first rotation direction until the current position of the nozzle is updated to the preset return position. Then, based on the current state of the rotary valve, the main control chip controls the valve core to continue rotating or stop rotating in the first rotation direction until the current state of the rotary valve is in the preset closed state (71), and the main control chip determines that all the discharge components have returned to their original positions.

[0079] In the above technical solution, when the nozzle is installed in the machine body at the discharge position 74, although the initial position of the nozzle can be detected by the nozzle detection module, the nozzle assembly may not be fully engaged with the rotary valve through the attraction magnet. At this time, the valve core cannot drive the nozzle to rotate in any direction. Therefore, in this embodiment, when the initial position of the nozzle is detected as discharge position 74, the valve core is first controlled to rotate in the second rotation direction. When the valve core rotates in the second rotation direction, the nozzle is confined to the discharge position. When the clutch drive gear rotates with the valve core, the clutch driven gear is frequently pressed down by the clutch drive gear. The first nozzle attraction magnet moves down frequently with the clutch driven gear, increasing the probability of fully engaging with the second nozzle attraction magnet. This alleviates the problem that the nozzle assembly cannot reliably engage with the rotary valve, causing the nozzle to be unable to rotate synchronously with the valve core through the clutch assembly. This improves the quality and effect of the valve core driving the nozzle rotation and increases the nozzle return efficiency.

[0080] As shown in Figure 10(b), if the food processor is powered on and the initial state of the rotary valve is detected as connected (72) and the initial position of the nozzle is discharge (74), the main control chip first controls the valve core to rotate in the first rotation direction until the nozzle's current position is updated to the preset return position. Then, based on the current state of the rotary valve, the main control chip controls the valve core 511 to continue rotating or stop rotating in the first rotation direction until the rotary valve's current state is in the preset closed state (71), at which point the main control chip determines that all discharge components have returned to their original positions.

[0081] As shown in Figure 10(c), if the food processing machine is powered on and the initial state of the rotary valve is detected as closed (71) and the initial position of the nozzle is as discharged (75), the rotary valve is in the preset return state and the nozzle is in the preset return position. The main control chip determines that all the dispensing components have returned to their original positions.

[0082] As shown in Figure 10(d), if the food processing machine 1 is powered on and the initial state of the rotary valve is detected as connected (72) and the initial position of the nozzle is as discharged (75), the nozzle is in the preset return position. The main control chip controls the valve core to rotate in the first rotation direction until the current state of the rotary valve is in the preset closed state. The main control chip then determines that all the nozzle components have returned to their original positions.

[0083] Please see Figure 11 , Figure 11 This is a schematic diagram showing the unknown positions of the valve core and nozzle in a slurry outlet component according to an embodiment of this application. Figure 11 As shown, when the initial state of the rotary valve is unknown (73) and the initial position of the nozzle is also unknown (76), the main control chip can control the valve core to rotate in the first rotation direction until the current position of the nozzle is updated to the preset return position within the nozzle activity area (70). Then, it continues to control the valve core to rotate in the first rotation direction until the current state of the rotary valve is in the preset closed state (71). Alternatively, the main control chip can first control the valve core to rotate in the first rotation direction until both the current state of the rotary valve and the current position of the nozzle are determined (i.e., neither is unknown). Then, the main control chip controls the return of the nozzle based on the scenario shown in Figure 10.

[0084] Please refer to Figure 12, which is a schematic diagram of the pulp outlet component provided in an embodiment of this application, where only the position of the pulp nozzle is known. In particular, Figure 12(a) is a schematic diagram of the initial position of the pulp nozzle in the waste discharge position 75 provided in an embodiment of this application; Figure 12(b) is a schematic diagram of the initial position of the pulp nozzle in the pulp outlet component provided in an embodiment of this application, where the initial position of the pulp nozzle is the pulp discharge position 74.

[0085] As shown in Figure 12(a), when the initial position of the nozzle is the waste discharge position 75, the main control chip controls the valve core to rotate in the first rotation direction. At this time, the nozzle is limited to the preset return position, i.e. the waste discharge position 75. When the current state of the rotary valve is updated to the off state 71, the main control chip determines that all the nozzle components have returned to their original positions.

[0086] As shown in Figure 12(b), when the initial position of the nozzle is the discharge position 74, since the initial state of the rotary valve is unknown 73, the main control chip controls the valve core to rotate in the first rotation direction until the current position of the nozzle is updated to the waste discharge position 75. Then, the main control chip controls the valve core 511 to continue rotating in the first rotation direction until the current state of the rotary valve is updated to the closed state 71, at which point the main control chip determines that all the discharge components have returned to their original positions.

[0087] Please refer to Figure 13, which is a schematic diagram of the slurry outlet component provided in an embodiment of this application, where only the valve core position is known. Figure 13(a) shows the initial state of the rotary valve in the closed state 71 provided in an embodiment of this application; Figure 13(b) shows the initial state of the rotary valve in the connected state 72 provided in an embodiment of this application. As shown in Figure 13, when the initial state of the rotary valve is known and the initial state of the slurry nozzle is unknown 73, the main control chip can control the valve core to rotate first in the second rotation direction until the current position of the slurry nozzle is updated to the slurry discharge position 74; then, the main control chip controls the valve core to rotate in the first rotation direction until the current position of the slurry nozzle is updated to the preset return position, i.e., the waste discharge position 75, and the current state of the rotary valve is updated to the preset return state, i.e., the closed state 71. The main control chip then determines that all slurry outlet components have returned to their original positions.

[0088] In some embodiments, when the nozzle assembly is installed into the food processor, the nozzle position corresponding to the position where the nozzle assembly and the rotary valve can fully engage is typically close to or at a preset return position. Therefore, in the case shown in Figure 13, when the initial state of the rotary valve is known and the current position of the nozzle is unknown, the main control chip controls the valve core to rotate first in the second rotation direction, enabling the rotary valve to quickly engage and align with the nozzle assembly whose position is unknown. Thus, the main control chip can more efficiently and accurately control the return of the nozzle assembly.

[0089] The apparatuses and methods disclosed in the several embodiments provided in this application can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatuses, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0090] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0091] This application provides a computer-readable storage medium storing a computer program. The computer program can be executed by a main control chip to complete the method for returning the pulp outlet of a food processing machine to its original position.

[0092] If a function is implemented as a software module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0093] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for returning the discharge part of a food processing machine to its original position, characterized in that, The food processing machine includes a grinding cup, a rotary valve, a valve core detection module, a slurry nozzle, and a slurry nozzle detection module. The rotary valve and the grinding cup are selectively connected via a rotatable valve core. The valve core can drive the slurry nozzle to rotate between a first liquid inlet position and a second liquid inlet position via a clutch assembly. The valve core detection module is used to detect the current state of the rotary valve, and the slurry nozzle detection module is used to detect the current position of the slurry nozzle. The method for returning the slurry outlet of the food processing machine includes: Before starting the pulping process, if the current position of the pulp nozzle is unknown, the valve core is controlled to rotate in the first rotation direction until the current position of the pulp nozzle is updated to the second liquid receiving position; the second liquid receiving position is the preset return position of the pulp nozzle, and the first rotation direction is the rotation direction from the first liquid receiving position to the second liquid receiving position; After the current position of the nozzle is updated to the second liquid inlet position, based on the current state of the rotary valve, the valve core is controlled to continue rotating or stop rotating in the first rotation direction until the current state of the rotary valve is in the preset return state.

2. The method for returning the discharge part of the food processing machine to its original position according to claim 1, characterized in that, Before the valve core is rotated in the first rotation direction until the current position of the nozzle is updated to the second liquid inlet position, the method for returning the slurry outlet to its original position further includes: The valve core is controlled to rotate in a second rotation direction until the current position of the nozzle is updated to the first liquid inlet position, and / or until the rotation angle of the valve core is greater than a preset transition angle; the second rotation direction is opposite to the first rotation direction.

3. The method for returning the discharge part of the food processing machine to its original position according to claim 1, characterized in that, Before starting the pulping process, the pulp outlet return method further includes: If the current position of the nozzle is the first liquid receiving position, control the valve core to rotate in the first rotation direction until the current position of the nozzle is updated to the second liquid receiving position; If the current position of the nozzle is the second liquid inlet position, and the current state of the rotary valve is not in the preset return state, control the valve core to rotate in the first rotation direction until the current state of the rotary valve is updated to the preset return state; If the nozzle is currently in the second liquid inlet position and the rotary valve is currently in the off state, control the valve core to stop rotating and generate a prompt message indicating that the slurry return is complete.

4. The method for returning the discharge part of the food processing machine to its original position according to any one of claims 1-3, characterized in that, The preset return position of the nozzle is the waste discharge position, and the preset return state of the rotary valve is the closed state.

5. The method for returning the discharge part of the food processing machine to its original position according to claim 1, characterized in that, If the current position of the nozzle is unknown, or the first liquid receiving position is reached, the method for returning the dispensing component to its original position further includes: Before the current position of the nozzle is updated to the second liquid inlet position, the timing of the valve core rotating in the first rotation direction is continuously recorded as the cumulative return time of the nozzle. When the cumulative return time of the nozzle exceeds the preset return time, nozzle not in position information is generated.

6. The method for returning the discharge part of the food processing machine to its original position according to claim 1, characterized in that, The shut-off maintenance angle of the rotary valve in the actual shut-off state is greater than the transition angle of the nozzle as it rotates from the first liquid receiving position to the second liquid receiving position.

7. A food processing machine, characterized in that, The food processing machine includes: Organism; The pulverizing cup is detachably housed within the machine body; A rotary valve, which is selectively connected to the pulverizing cup body via a rotatable valve core; The nozzle is connected to the valve core via a clutch assembly; The return circuit includes a drive control module, a valve core detection module, and a nozzle detection module, all of which are electrically connected to the main control chip. The drive control module drives the rotary valve motor to rotate, thereby rotating the valve core. The valve core detection module detects the current state of the rotary valve, and the nozzle detection module detects the current position of the nozzle.

8. The food processing machine according to claim 7, characterized in that, The drive control module includes: The signal input terminal of the H-bridge driver circuit is connected to the signal output terminal of the main control chip. The motor is connected to the signal output terminal of the H-bridge drive circuit via the motor connection terminal.

9. The food processing machine according to claim 7, characterized in that, The valve core detection module includes: A valve core detection magnet is located at the top of the valve core, and the valve core detection magnet can rotate with the valve core; Both the first Hall effect sensor and the second Hall effect sensor are located inside the machine body, and the output pins of both the first Hall effect sensor and the second Hall effect sensor are connected to the main control chip. When the rotary valve is in the closed state, the first Hall sensor can be triggered by the valve core detection magnet and output a first level; when the rotary valve is in the open state, the second Hall sensor can be triggered by the valve core detection magnet and output a first level. A first resistor and a second resistor are connected, with the first resistor connected to the output pin of the first Hall effect sensor and the second resistor connected to the output pin of the second Hall effect sensor; the resistance values ​​of the first resistor and the second resistor correspond to the first voltage level.

10. The food processing machine according to claim 7, characterized in that, The nozzle detection module includes: A nozzle detection magnet is disposed at the top of the nozzle, and the nozzle detection magnet can rotate with the nozzle; The third Hall effect sensor and the fourth Hall effect sensor are both located inside the machine body, and the output pins of the third Hall effect sensor and the fourth Hall effect sensor are both connected to the main control chip. When the nozzle is in the first liquid contact position, the third Hall effect sensor can be triggered by the nozzle detection magnet and output a second level; when the nozzle is in the second liquid contact position, the fourth Hall effect sensor can be triggered by the nozzle detection magnet and output a second level. A third resistor and a fourth resistor are connected, the third resistor being connected to the output pin of the third Hall effect sensor, and the fourth resistor being connected to the output pin of the fourth Hall effect sensor; the resistance values ​​of the third resistor and the fourth resistor correspond to the second voltage level.

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