Food processing machine control method and food processing machine

Abstract

The present application discloses a control method for a food processor and a food processor. The control method includes at least the following steps: the motor begins operating according to a determined operating mode; determining whether a protection program preset in the protection module is triggered based on the operating parameters of the motor; and when the protection program is triggered, the main control chip controls the motor to execute a protection mode corresponding to the protection program, wherein the protection mode pre-stores a plurality of different protection measures. The control method provided in the present application provides a machine with different motor protection measures through the protection program setting, thereby extending the life of the motor and preventing damage to the motor or motor drive circuit due to excessive operating current.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and in particular relates to a control method of a food processor and the food processor. Background Art

[0002] With the development of science and technology and the progress of society, a variety of food processing machines have appeared on the market. The existence of so many types of products has brought great convenience to people's daily lives. Existing food processing machines generally include a machine base and a stirring cup arranged on the machine base, wherein a stirring assembly is arranged at the bottom of the stirring cup, and a motor for driving the stirring assembly is arranged in the machine base. In addition, the motor shaft is often matched with the stirring assembly through a shaft seal and grease. The tightness of the shaft seal, the amount of grease, and the application method will affect the load of the motor, thereby further affecting the working current of the motor. In addition, since the sealing assembly of the motor shaft and the stirring assembly is usually manually operated, the difference in operation will also lead to differences between the working current and the rated current of the motor in the same product. In this case, if the working current of the motor is greater than the rated current for a long time, it is very likely that the life of the motor will be shortened, and in serious cases, the driving circuit of the motor will be damaged.

[0003] On the other hand, no matter what type of food processor, there are certain requirements for the materials placed in the mixing cup. When the user processes materials with high viscosity or beyond the recipe requirements, or even materials with large particles, not only may the motor's operating current exceed its rated current, it may also cause the motor to stall, which may also burn out the motor or the motor's drive circuit.

[0004] On the other hand, existing food processors with thermostats have different trigger times under different current conditions. The higher the current, the shorter the trigger time. When the motor's operating current exceeds the thermostat's limit, the motor is promptly powered off. While this method can protect the motor to a certain extent, it cannot operate when the thermostat is disconnected, interrupting the cooking process and affecting the user experience.

[0005] This shows that the existing technology needs to be further improved and enhanced. Summary of the Invention

[0006] The present invention provides a control method for a food processor and a food processor to solve at least one of the above technical problems.

[0007] The technical solution adopted in the present invention is:

[0008] In a first aspect, the present invention provides a control method for a food processing machine, the food processing machine comprising a machine base, a motor and a main control chip disposed within the machine base, and a protection module connected to the motor and the main control chip, respectively; the protection module being configured to detect operating parameters of the motor, and the main control chip being configured to determine an operating mode of the motor, the operating mode comprising at least a first operating mode and a second operating mode; the control method comprising at least the following steps:

[0009] The motor starts operating according to the determined operating mode;

[0010] Determining whether a protection program preset in the protection module is triggered according to the operating parameters of the motor;

[0011] When the protection program is triggered, the main control chip controls the motor to execute a protection mode corresponding to the protection program, and the protection mode pre-stores a plurality of different protection measures.

[0012] As a preferred embodiment of the present invention, when the protection program is triggered, the main control chip controls the motor to execute a protection mode corresponding to the protection program, wherein the protection mode includes at least: a current protection mode and a temperature protection mode; current protection mode: when the operating current of the motor is greater than a preset protection current, and the operating time that the operating current exceeds the protection current is greater than the preset protection time, the first protection measure is triggered; temperature protection mode: when the operating temperature of the motor is greater than the protection temperature, the second protection measure is triggered.

[0013] As a preferred embodiment of the present invention, the protection program is provided with multiple levels of trigger conditions, and the multiple levels of trigger conditions correspond to multiple different protection measures respectively; when determining whether the protection program preset in the protection module is triggered according to the operating parameters of the motor, it includes: determining whether a certain level of trigger conditions in the protection program is triggered according to the operating parameters of the motor.

[0014] As a preferred embodiment of the present invention, the multiple levels of trigger conditions are triggered sequentially step by step; or the multiple levels of trigger conditions are triggered selectively one by one.

[0015] As a preferred embodiment of the present invention, the multi-level triggering conditions at least include:

[0016] Level 1 trigger condition: setting a first protection current and a first protection time, and determining whether the operating current of the motor is greater than the first protection current, and whether the operating time when the operating current exceeds the first protection current is greater than the first protection time;

[0017] Secondary trigger condition: setting a second protection current and a second protection time, and determining whether the operating current of the motor is greater than the second protection current, and whether the operating time when the operating current exceeds the second protection current is greater than the second protection time;

[0018] Level 3 trigger condition: set the third protection current and the third protection time, and judge whether the running current of the motor is greater than the third protection current, and whether the running time when the running current exceeds the third protection current is greater than the third protection time.

[0019] As a preferred embodiment of the present invention, the food processor further comprises a thermostat connected to the motor, and when the operating temperature is greater than a preset protection temperature, the thermostat is disconnected to stop the motor; the multi-stage triggering condition further comprises:

[0020] Level 4 trigger condition: detect whether the thermostat is disconnected;

[0021] Level 5 trigger condition: After the thermostat is restored, detect whether the thermostat is disconnected again.

[0022] As a preferred embodiment of the present invention, when the motor executes the current protection mode, the first protection measure includes at least the following protection actions:

[0023] Level 1 protection action: when the motor triggers the level 1 trigger condition, the main control chip controls the motor to reduce the speed or power, and runs at the reduced speed or power;

[0024] Secondary protection action: when the motor triggers the secondary trigger condition, the main control chip controls the motor to switch from one of the first operating mode and the second operating mode to the other;

[0025] Level 3 protection action: when the motor triggers the level 3 trigger condition, the main control chip controls the motor to work intermittently;

[0026] When the motor executes the temperature protection mode, the second protection measure includes at least the following protection actions:

[0027] Level 4 protection action: When the motor triggers the level 4 trigger condition, the main control chip controls the motor to stop working, and the motor continues to work intermittently until the thermostat recovers;

[0028] Level 5 protection action: When the motor triggers the level 5 trigger condition, the main control chip controls the motor to stop working and sends out an alarm signal.

[0029] As a preferred embodiment of the present invention, the first protection current, the second protection current and the third protection current are respectively 1.5 times the operating current of the motor at different speeds; the first protection time, the second protection time and the third protection time are respectively 2 / 3 of the temperature controller trigger time corresponding to the first protection current, the second protection current and the third protection current.

[0030] As a preferred embodiment of the present invention, in the three-level protection action, the motor works intermittently according to a preset interval waiting time; the interval waiting time is determined according to the following steps: the main control chip compares the operating temperature of the motor with the protection temperature of the thermostat and obtains a comparison result; the main control chip extends or shortens the interval waiting time according to the comparison result.

[0031] In a second aspect, the present invention also provides a food processing machine, comprising a machine base and a blending cup arranged on the machine base; a motor and a main control chip are provided in the machine base, the blending cup has a processing cavity, and a crushing knife assembly is provided in the processing cavity, the motor is used to drive the crushing knife assembly to rotate so as to process the food placed in the processing cavity, and a protection module connected to the motor and the main control chip respectively, and a temperature controller connected to the motor are also provided in the machine base, the main control chip, the protection module and the temperature controller are all used to execute the control method of the food processor as described above.

[0032] Due to the adoption of the above technical solution, the beneficial effects achieved by the present invention are as follows:

[0033] 1. The control method provided in the present application enables the machine to have different motor protection measures through protection program settings. On the one hand, this method can avoid the problem of excessive motor operating current due to the assembly of shaft seal and grease, improper materials added to the machine by the user, motor jamming, etc., thereby helping to extend the life of the motor and prevent the motor or motor drive circuit from being damaged due to excessive operating current; on the other hand, compared with the prior art method of protecting the motor only by a thermostat, the protection measures provided in the present application can not only send an alarm prompt signal, but also ensure the continuity of the motor operation process, prevent the motor from being unable to work for a long time due to the disconnection of the thermostat, thereby greatly improving the stability of the motor operation process and improving the user experience.

[0034] 2. As a preferred embodiment of the present invention, the setting of multi-level trigger conditions in the protection mode enables the machine to have multiple different protection actions. According to different trigger conditions, the machine can perform different protection actions accordingly. This setting method can protect the different abnormal conditions of the motor, so that the machine can adapt to different processing environments. While improving the adaptability of the machine, it is also conducive to ensuring the stability of the motor working process. In addition, the multi-level trigger conditions in this application can be triggered sequentially step by step or selectively. The existence of the two triggering methods can greatly improve the sensitivity of the motor protection program and shorten the response time of the protection program on the one hand; on the other hand, it can improve the reliability of the protection program and reduce the impact of external interference on the motor, thereby ensuring the accuracy of the motor protection program.

[0035] 3. As a preferred embodiment of the present invention, as the trigger conditions from level one to level five progress in sequence, the protection actions from level one to level five become increasingly stringent, so that the motor can be protected under different abnormal conditions, so as to avoid to the greatest extent the situation where the working current of the motor is greater than the rated current for a long time, thereby helping to ensure the smooth operation and service life of the motor and enhance the user experience.

[0036] 4. As a preferred embodiment of the present invention, the setting of an intermittent waiting time can significantly reduce the motor temperature, facilitating its rapid recovery to a normal temperature range. Furthermore, the intermittent waiting time can be determined based on the motor's operating temperature and the thermostat's protection temperature, making the intermittent waiting time adjustable. This improves the intelligence level of the motor protection program while ensuring its effectiveness and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present application and do not constitute an improper limitation of the present invention. In the drawings:

[0038] Figure 1 A structural schematic diagram of a food processing machine provided by an embodiment of the present invention;

[0039] Figure 2 A schematic flow chart of a control method for a food processing machine provided by an embodiment of the present invention;

[0040] Figure 3 A structural block diagram of a food processing machine provided by an embodiment of the present invention;

[0041] Figure 4 A schematic flow chart of another food processing machine control method provided by an embodiment of the present invention;

[0042] Figure 5 A schematic flow chart of a control method for a food processor provided in an embodiment of the present invention.

[0043] Among them, 100 is the machine base, 110 is the motor, 200 is the mixing cup, 210 is the processing chamber, and 220 is the crushing knife assembly. DETAILED DESCRIPTION

[0044] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0046] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] In the present invention, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0049] like Figure 1As shown, the present invention provides a food processor, comprising a base 100 and a blending cup 200 disposed on the base 100. The base 100 is provided with a motor 110 and a main control chip (not shown), as well as a protection module (not shown) connected to the motor 110 and the main control chip, respectively. The blending cup 200 has a processing chamber 210, and a crushing blade assembly 220 is disposed within the processing chamber. The motor 110 is used to drive the crushing blade assembly to rotate to process food placed in the processing chamber. The protection module is used to detect the operating parameters of the motor 110, and the main control chip can determine the operating mode of the motor 110 based on the operating parameters. The operating modes include at least a first operating mode and a second operating mode.

[0050] In addition, the base 100 is also provided with a thermostat (not shown) connected to the motor 110. When the operating temperature of the motor 110 exceeds a preset protection temperature, the thermostat is disconnected to stop the motor 110. The main control chip, the protection module, and the thermostat are all used to execute the food processing machine control method provided in this application. In this embodiment, the main control chip can be a microcontroller unit (MCU).

[0051] It should be noted that, in this embodiment, the first operating mode is preferably a constant speed mode, and the second operating mode is preferably a constant power mode. Both the first operating mode and the second operating mode can regulate the speed of the motor 110 to adapt to more complex application requirements. For example, the motor 110 can be switched from a constant speed mode to a constant power mode, or vice versa, depending on the operating conditions of the food processor. This avoids the use of only one operating mode to solely control the motor speed, and avoids the inability of a single constant speed or constant power mode to meet diverse practical application requirements and the need for high-quality food processing, thereby improving the user experience.

[0052] The food processing machine provided in this embodiment may include, but is not limited to, a food processor, a juicer, and a pasta machine, and this embodiment does not limit or elaborate on these aspects. The following embodiments of the present invention mainly illustrate the motor control method of a food processor that is a wall-breaking food processor. The implementation principles of the motor control method of other food processing machines, including pasta machines and juicers, are the same as those of the wall-breaking food processor, and are not elaborated on in detail in this embodiment.

[0053] Reference Figure 2 As shown, based on the food processing machine provided in the above embodiment, this embodiment further provides a control method for the food processing machine, and the control method includes at least the following steps:

[0054] S11. The motor starts to operate according to the determined operation mode.

[0055] It should be understood that the motor 110 in this embodiment can simultaneously support multiple different operating modes to control its speed in various ways. Specifically, it can be a constant speed operating mode, a constant power operating mode, a variable speed operating mode, a variable power operating mode, etc., and the above operating modes are merely illustrative and do not constitute a specific limitation on the various operating modes of the motor 110.

[0056] S12. Determine whether a protection program preset in the protection module is triggered according to the operating parameters of the motor; if so, execute step S13; if not, execute step S14.

[0057] In this step, the operating parameters may include at least rotational speed, power, operating current, operating time, and operating temperature, etc. There is no limitation on the specific types of the operating parameters.

[0058] S13. The main control chip controls the motor to execute a protection mode corresponding to the protection program, and the protection mode pre-stores a plurality of different protection measures.

[0059] S14, the motor continues to work.

[0060] Preferably, in step S13, the protection mode in this embodiment may include at least: a current protection mode and a temperature protection mode; wherein,

[0061] a. Current protection mode: When the operating current of the motor 110 is greater than a preset protection current, and the operating time during which the operating current exceeds the protection current is greater than a preset protection time, the first protection measure is triggered.

[0062] b. Temperature protection mode: When the operating temperature of the motor 110 is greater than the protection temperature, the second protection measure is triggered.

[0063] The control method provided in the present application enables the machine to have different motor protection measures through protection program settings. On the one hand, this method can avoid the problem of excessive motor operating current due to the assembly of shaft seal and grease, improper materials added to the machine by the user, motor jamming, etc., thereby helping to extend the life of the motor and prevent the motor or motor drive circuit from being damaged due to excessive operating current; on the other hand, compared with the existing technology of protecting the motor only by a thermostat, the protection measures provided in the present application can not only send an alarm prompt signal, but also ensure the continuity of the motor operation process, and prevent the motor from being unable to work for a long time due to the disconnection of the thermostat, thereby greatly improving the stability of the motor operation process and improving the user experience.

[0064] As a preferred embodiment of the present invention, the protection program in this embodiment can be provided with multiple levels of trigger conditions, and each of the multiple levels of trigger conditions corresponds to a plurality of different protection measures. Furthermore, when determining whether a preset protection program in the protection module is triggered based on the motor's operating parameters, it is determined based on the motor's operating parameters whether a certain level of trigger conditions in the protection program is triggered. If a certain level of protection program is triggered, the main control chip can control the motor to execute the protection measures corresponding to that level of protection program. Furthermore, the multiple levels of trigger conditions can be triggered sequentially, or they can be triggered selectively.

[0065] It is understandable that, referring to Figure 3 As shown, the protection module in this embodiment can correspond to multiple levels of triggering elements and multiple different protection measures, and the protection module pre-stores a certain level of triggering conditions and the corresponding protection actions. The protection module in this embodiment can be set to only one or multiple, and this embodiment does not limit the number of protection modules. When there is one protection module, it can pre-store multiple levels of triggering conditions and multiple different protection actions; when there are multiple protection modules, each protection module can pre-store multiple levels of triggering conditions and multiple different protection actions, and multiple protection modules can be connected in parallel or in series. When connected in parallel, each protection module corresponds to a selective triggering method; when connected in series, each protection module corresponds to a step-by-step sequential triggering method. This embodiment also does not limit the connection method between the protection modules.

[0066] The setting of multi-level trigger conditions in the protection mode enables the machine to have multiple different protection actions. According to different trigger conditions, the machine can perform different protection actions accordingly. This setting method can protect the different abnormal conditions of the motor, so that the machine can adapt to different processing environments. While improving the adaptability of the machine, it is also conducive to ensuring the stability of the motor working process. In addition, the multi-level trigger conditions in this application can be triggered sequentially step by step or selectively triggered. The existence of the two triggering methods can greatly improve the sensitivity of the motor protection program and shorten the response time of the protection program on the one hand; on the other hand, it can improve the reliability of the protection program and reduce the impact of external interference on the motor, thereby ensuring the accuracy of the motor protection program.

[0067] In order to facilitate a clearer understanding of the control method provided in this application, a specific example will be used below to explain:

[0068] In this example, refer to Figure 4 As shown, the current protection mode and the temperature protection mode may include at least:

[0069] Level 1 trigger condition: set the first protection current I1 and the first protection time t1, and judge whether the operating current of the motor 110 is greater than the first protection current I1, and whether the operating time when the operating current exceeds the first protection current I1 is greater than the first protection time t1; when the operating current is greater than the first protection current I1, and the operating time when the operating current exceeds the first protection current I1 is greater than the first protection time t1, the level 1 protection action is triggered.

[0070] Secondary trigger condition: set the second protection current I2 and the second protection time t2, and judge whether the operating current of the motor 110 is greater than the second protection current I2, and whether the operating time when the operating current exceeds the second protection current I2 is greater than the second protection time t2; when the operating current is greater than the second protection current I2, and the operating time when the operating current exceeds the second protection current I2 is greater than the second protection time t2, the secondary protection action is triggered.

[0071] Level 3 trigger condition: set the third protection current I3 and the third protection time t3, and judge whether the operating current of the motor 110 is greater than the third protection current I3, and whether the operating time when the operating current exceeds the third protection current I3 is greater than the third protection time t3; when the operating current is greater than the third protection current I3, and the operating time when the operating current exceeds the third protection current I3 is greater than the third protection time t3, the level 3 protection action is triggered.

[0072] Level 4 triggering condition: detecting whether the thermostat is disconnected; when the operating temperature of the motor 110 is greater than the protection temperature preset in the thermostat to disconnect the thermostat, and the operating current of the motor 110 is zero, the level 4 protection action is triggered.

[0073] Level 5 triggering condition: After the thermostat is restored, detect whether the thermostat is disconnected again; when the thermostat is restored and it is detected that the thermostat is disconnected again, trigger the level 5 protection action.

[0074] Continue to refer to Figure 4 As shown, corresponding to the trigger conditions at each level, the first protection measure and the second protection measure in this embodiment may include at least the following protection actions:

[0075] Level 1 protection action: When the motor 110 triggers the level 1 trigger condition, the main control chip controls the motor 110 to reduce the speed or power, and runs at the reduced speed or power.

[0076] Secondary protection action: when the motor 110 triggers the secondary trigger condition, the main control chip controls the motor 110 to switch from one of the first operating mode and the second operating mode to the other.

[0077] Level 3 protection action: When the motor 110 triggers the level 3 trigger condition, the main control chip controls the motor 110 to work intermittently.

[0078] Level 4 protection action: When the motor 110 triggers the level 4 trigger condition, the main control chip controls the motor 110 to stop working, and the motor 110 continues to work intermittently until the thermostat is restored.

[0079] Level 5 protection action: When the motor 110 triggers the level 5 trigger condition, the main control chip controls the motor 110 to stop working and sends out an alarm signal.

[0080] It should be noted that the above Figure 4 Only the multi-level trigger conditions are explained in the way of triggering in sequence step by step. For the multi-level trigger conditions that are triggered one by one, Figure 4 Although no schematic description is given, it should also be within the scope of protection of this application.

[0081] The control method provided in the present application has increasingly stringent protection actions from level one to level five as the trigger conditions progress successively from level one to level five, thereby enabling the motor 110 to be protected under different abnormal conditions, thereby avoiding to the greatest extent the situation where the operating current of the motor 110 is greater than the rated current for a long time, thereby helping to ensure the smooth operation and service life of the motor 110 and improving the user experience.

[0082] In one embodiment, the first protection current I1, the second protection current I2 and the third protection current I3 can be 1.5 times the operating current of the motor 110 at different speeds respectively; and the first protection time t1, the second protection time t2 and the third protection time t3 can be 2 / 3 of the temperature controller trigger time corresponding to the first protection current I1, the second protection current I2 and the third protection current I3 respectively.

[0083] Generally speaking, the rated current corresponding to each gear of the motor 110 needs to be calibrated before the machine leaves the factory, and the calibration data is stored in the main control chip. Specifically, the calibration data of the motor 110 can refer to the following table:

[0084] Motor gear Rated current Rated power Protection current Protection Time L gear AL PL 1.5*AL TL 1st gear A1 P1 1.5*A1 T1 2nd gear A2 P2 1.5*A2 T2 3rd gear A3 P3 1.5*A3 T3 4 gears A4 P4 1.5*A4 T4 5 gears A5 P5 1.5*A5 T5 6 gears A6 P6 1.5*A6 T6 7 gears A7 P7 1.5*A7 T7 8 gears A8 P8 1.5*A8 T8 9 gears A9 P9 1.5*A9 T9 H gear AH PH 1.5*AH TH

[0085] In the above table, as the gear of motor 110 increases, the speed of motor 110 also increases accordingly, and its rated current also increases. At the same time, the protection current and protection time in this embodiment will also change with the change of gear. When a certain level of triggering condition of motor 110 is triggered, the speed of motor 110 drops to the previous gear, and the protection current of motor 110 is also adjusted to 1.5 times the rated current of the previous gear. For example, when the initial operating gear of motor 110 is H gear and it is running in constant speed mode, its protection current I H =1.5*A H , protection time t H =T H ; When the first-level trigger condition is triggered during the operation of motor 110, the motor downshifts to gear 9 and its protection current I9 = 1.5*A9, and the protection time t9 = T9; when the motor is running in gear 9, if the second-level trigger condition is triggered, the motor switches from the 9-speed constant speed operation mode to the 9-speed constant power operation mode, and continues to run at constant power P9. At this time, its protection current I9 = 1.5*A9, and the protection time t9 = T9.

[0086] This application performs individual current and power calibration on each machine before shipment, avoiding current and power discrepancies caused by component errors and ensuring the reliability of current and power detection. Furthermore, protection current and protection time are individually designed for each gear position to ensure the reliability of the motor protection program and avoid incorrect protection of the machine.

[0087] It should be noted that the protection time in this embodiment can be set according to the protection current of the motor 110 and the current characteristics of the thermostat. Specifically, the thermostat is designed with a protection temperature C and a protection current I. The insulation temperature C can be set to a fixed value according to the temperature resistance level of the motor 110; the protection current I can be set to the maximum operating current of the motor 110. However, since the thermostat uses the heat generated by the current to achieve protection, when the current I is large, the trigger time of the thermostat is short; when the current I is small, the trigger time is long. Therefore, when the specifications of the thermostat are determined, the characteristic curve of the protection current is also determined, and the protection current and protection time in the protection program also correspond to specific values. The setting method of the protection time in this embodiment as 2 / 3 of the thermostat trigger time corresponding to the protection current can avoid the thermostat disconnecting before the corresponding trigger condition is triggered, thereby ensuring the reliability of the motor protection design.

[0088] As a preferred embodiment of the present invention, in the three-level protection action, the motor 110 can perform intermittent work according to the preset interval waiting time. Figure 5 As shown, the gap waiting time can be determined according to the following steps:

[0089] S21. The main control chip compares the operating temperature of the motor with the protection temperature of the thermostat and obtains a comparison result.

[0090] In order to achieve the operating temperature C of the motor 110 电机 For monitoring, the food processing machine in this embodiment may also be provided with a temperature sensor, wherein this embodiment does not limit the type of the temperature sensor, which may be a thermistor sensor, a thermocouple sensor, a thermal resistor sensor, etc.

[0091] S22. The main control chip extends or shortens the gap waiting time according to the comparison result.

[0092] Specifically, in this embodiment, the operating temperature C of the motor 110 is 电机 When compared with the protection temperature C of the thermostat, for example, a judgment can be made based on the difference between the two:

[0093] When CC 电机 When the interval is >20, the waiting time will not be increased;

[0094] When 20≥CC 电机 When the motor temperature is >10, increase the waiting time until the motor temperature drops by 5°C before running again.

[0095] When 10≥CC 电机 When the motor temperature is >5, increase the waiting time until the motor temperature drops by 10°C before running again.

[0096] When 5 ≥ CC 电机 When >0, increase the interval waiting time until the operating temperature of the motor drops by 15℃ before running again.

[0097] It should be understood that the operating temperature C in the above determination process 电机 The range corresponding to the difference between the protection temperature C and the operating temperature C of the motor 110 电机 The degree of cooling can be comprehensively considered based on factors such as product design requirements, motor specifications and user experience, and this embodiment does not limit this. In addition, if 10≥CC 电机 >5, the motor should stop working immediately and wait until the motor temperature drops by 10℃ before continuing to run again.

[0098] The intermittent waiting time in this embodiment can significantly reduce the motor temperature, facilitating its rapid recovery to a normal temperature range. Furthermore, the intermittent waiting time can be determined based on the motor's operating temperature and the thermostat's protection temperature, making the intermittent waiting time adjustable. This improves the intelligence level of the motor protection program while also ensuring its effectiveness and reliability.

[0099] In addition, it should be noted that when the control method provided in this embodiment uses a multi-level triggering condition as a selective triggering method, the motor running time in the first-level protection action, the second-level protection action and the third-level protection action can be extended accordingly, so that the machine can have a better crushing effect on the material and enhance the user experience.

[0100] Preferably, the increase in the motor running time in the first level protection action, the second level protection action and the third level protection action can also be based on the motor speed N after the corresponding protection action takes effect. 保护 The motor speed N before the protection action takes effect 正常 Therefore, the running time T after the motor reduces the speed is determined 保护 Equal to the running time T before the motor protection action 正常 Multiply by the speed N before the motor protection action 正常 The speed N after the motor protection is activated 保护 Ratio, that is:

[0101]

[0102] Anything not described in the present invention can be achieved by adopting or drawing on existing technologies.

[0103] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0104] The foregoing is merely an embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A method for controlling a food processing machine, characterized in that: The food processor includes a base, wherein a motor and a main control chip are disposed within the base, and a protection module connected to the motor and the main control chip, respectively; the protection module is configured to detect operating parameters of the motor, and the main control chip is configured to determine an operating mode of the motor, wherein the operating mode includes at least a first operating mode and a second operating mode; The control method comprises at least the following steps: The motor starts operating according to the determined operating mode; Determining whether a protection program preset in the protection module is triggered according to the operating parameters of the motor; When the protection program is triggered, the main control chip controls the motor to execute a protection mode corresponding to the protection program, and the protection mode pre-stores a plurality of different protection measures; The protection program is provided with multiple levels of trigger conditions, and the multiple levels of trigger conditions correspond to multiple different protection measures respectively; The determining, based on the operating parameters of the motor, whether a protection program preset in the protection module is triggered includes: Determining whether a certain level of triggering condition in the protection program is triggered according to the operating parameters of the motor; The multi-level trigger conditions include at least: Level 1 trigger condition: setting a first protection current and a first protection time, and determining whether the operating current of the motor is greater than the first protection current, and whether the operating time when the operating current exceeds the first protection current is greater than the first protection time; Secondary trigger condition: setting a second protection current and a second protection time, and determining whether the operating current of the motor is greater than the second protection current, and whether the operating time when the operating current exceeds the second protection current is greater than the second protection time; Level 3 trigger condition: setting a third protection current and a third protection time, and judging whether the running current of the motor is greater than the third protection current, and whether the running time when the running current exceeds the third protection current is greater than the third protection time; The food processor further comprises a temperature controller connected to the motor, and when the operating temperature of the motor is greater than a preset protection temperature, the temperature controller is disconnected to stop the motor from working; The multi-level triggering conditions also include: Level 4 trigger condition: detect whether the thermostat is disconnected; Level 5 trigger condition: After the thermostat is restored, detect whether the thermostat is disconnected again; When the motor executes the current protection mode, the first protection measure includes at least the following protection actions: Level 1 protection action: when the motor triggers the level 1 trigger condition, the main control chip controls the motor to reduce the speed or power, and runs at the reduced speed or power; Secondary protection action: when the motor triggers the secondary trigger condition, the main control chip controls the motor to switch from one of the first operating mode and the second operating mode to the other; Level 3 protection action: when the motor triggers the level 3 trigger condition, the main control chip controls the motor to work intermittently; When the motor executes the temperature protection mode, the second protection measure includes at least the following protection actions: Level 4 protection action: When the motor triggers the level 4 trigger condition, the main control chip controls the motor to stop working, and the motor continues to work intermittently until the thermostat recovers; Level 5 protection action: When the motor triggers the level 5 trigger condition, the main control chip controls the motor to stop working and sends out an alarm signal.

2. The control method according to claim 1, wherein: When the protection program is triggered, the main control chip controls the motor to execute the protection mode corresponding to the protection program. Current protection mode: when the running current of the motor is greater than the preset protection current, and the running time of the running current exceeding the protection current is greater than the preset protection time, the first protection measure is triggered; Temperature protection mode: When the operating temperature of the motor is higher than the protection temperature, the second protection measure is triggered.

3. The control method according to claim 1, wherein: The multiple levels of trigger conditions are triggered sequentially step by step; or the multiple levels of trigger conditions are triggered selectively one by one.

4. The control method according to claim 1, wherein: The first protection current, the second protection current and the third protection current are respectively 1.5 times the operating current of the motor at different speeds; The first protection time, the second protection time, and the third protection time are respectively 2 / 3 of the thermostat triggering time corresponding to the first protection current, the second protection current, and the third protection current.

5. The control method according to claim 1, wherein: In the third-level protection action, the motor works intermittently according to a preset interval waiting time; The gap waiting time is determined according to the following steps: The main control chip compares the operating temperature of the motor with the protection temperature of the thermostat and obtains a comparison result; The main control chip extends or shortens the gap waiting time according to the comparison result.

6. A food processor, comprising a machine base and a blending cup disposed on the machine base; the machine base is provided with a motor and a main control chip; the blending cup has a processing chamber, and a crushing blade assembly is disposed in the processing chamber; the motor is used to drive the crushing blade assembly to rotate so as to process food placed in the processing chamber, characterized in that: The base is also provided with a protection module connected to the motor and the main control chip respectively, and a temperature controller connected to the motor. The main control chip, the protection module and the temperature controller are all used to execute the control method of the food processing machine as described in any one of claims 1 to 5.

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