Motor protection control method and system of snow melting machine

Abstract

The invention discloses a motor protection control method and system of a snow melting machine. The method comprises the following steps: S101, acquiring current rotating speed data of a stirring motor detected by a Hall sensor; s102, judging whether the current rotating speed data is smaller than or equal to a first preset rotating speed threshold value or not, if yes, controlling a stirring motor to stop working, and if not, executing the step S103; s103, determining motor working state parameters according to the current rotating speed data, a preset mode calculation rule and preset reference rotating speed data; s104, whether the working state parameters of the motor are preset state parameters or not is judged, if yes, the compressor is controlled to stop working, the step S105 is executed, and if not, the compressor is controlled to continue refrigerating work, and the step S101 is executed; and S105, executing a restart waiting mode, and returning to the step S101 after the mode is finished. The method has the characteristics of high detection data accuracy, good motor protection control effect, long service life of the motor and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of snow melting machines, and in particular to a motor protection control method and system for a snow melting machine. Background Art

[0002] A snow melt machine is a machine used to make cool and refreshing smoothies (i.e., snow melt beverages) from various fruit juices or liquid beverages. In the process of making smoothies, the snow melt machine generally controls the stirring motor to drive the scraper to rotate, so as to stir the smoothies in the ice making chamber. However, the stirring motor of the snow melt machine may be blocked due to the hardness of the smoothies, affecting the ice making work, and even burning the motor after a while, which greatly affects the safety and stability of the snow melt machine and increases the maintenance cost.

[0003] In this regard, some current snow melters protect the motor by detecting the current of the stirring motor. For example, when the snow melter is working, the current of the stirring motor is detected in real time. As the raw materials freeze, the resistance of the stirring motor increases accordingly with the hardness of the raw materials, and the detected current will change. When the preset power value is reached, the compressor is controlled to stop so that the stirring motor can maintain a certain speed and continue to stir the frozen raw materials to form the desired smoothie. However, the detection current in this control method is easily affected by the fluctuation of the working environment temperature, resulting in large errors in the current detection data of the stirring motor and more prone to misjudgment, affecting the normal operation of the motor, and even causing the motor to stall, greatly affecting the service life of the motor and the operation of the snow melter. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a motor protection control method and system for a snow melting machine, which has the characteristics of high detection data accuracy, good motor protection control effect and long motor life.

[0005] In order to solve the above technical problems, the present invention provides a motor protection control method for a snow melting machine, including: S101, obtaining the current speed data of the stirring motor detected by the Hall sensor; S102, judging whether the current speed data is less than or equal to the first preset speed threshold, when it is judged to be yes, controlling the stirring motor to stop working, and when it is judged to be no, executing step S103; S103, determining the motor working state parameters according to the current speed data, preset mode calculation rules and preset reference speed data; S104, judging whether the motor working state parameters are preset state parameters, when it is judged to be yes, controlling the compressor to stop working, and executing step S105, when it is judged to be no, controlling the compressor to continue cooling work, and returning to step S101; S105, executing the restart waiting mode, and returning to step S101 after the mode ends.

[0006] As an improvement of the above solution, when the current speed data is less than or equal to the first preset speed threshold, the stirring motor is controlled to stop working and issue an error indication, and the alarm mode is executed.

[0007] As an improvement of the above scheme, the steps of the alarm mode operation include: performing alarm timing; when the alarm time is greater than a first preset alarm time, controlling the compressor to stop working; when the alarm time is greater than a second preset alarm time, entering a standby state; wherein the second preset alarm time is greater than the first preset alarm time.

[0008] As an improvement of the above scheme, the step of determining the compressor working state parameters according to the current speed data, the preset mode calculation rules and the preset reference speed data includes: calculating the difference between the preset reference speed data and the current speed data to obtain the speed difference; judging whether the speed difference is greater than a second preset speed threshold, and if it is judged as yes, outputting the abnormal working state parameters of the motor, and if it is judged as no, outputting the normal working state parameters of the motor.

[0009] As an improvement of the above scheme, the step of executing the restart waiting mode includes: S201, performing waiting timing; S202, judging whether the waiting time is greater than a preset time threshold, if it is judged as yes, the waiting mode ends, if it is judged as no, returning to step S201.

[0010] As an improvement of the above scheme, the step of executing the restart waiting mode also includes: S301, performing waiting timing; S302, obtaining temperature data in the ice-making chamber, and calculating the temperature change rate during the waiting time; S303, judging whether the waiting time is greater than a preset time threshold and whether the temperature change rate during the waiting time is greater than a preset change rate, if the judgment is yes, the waiting mode ends, if the judgment is no, return to step S301.

[0011] The present invention also provides a motor protection control system for a snow melter, comprising a Hall sensor, a magnet component and a main controller, wherein the Hall sensor and the magnet component are both arranged on the outside of an ice bucket, the magnet component is installed on the external rotating shaft of a stirring motor, the Hall sensor is located on one side of the magnet component, and the Hall sensor is used to detect the current speed data of the stirring motor; the main controller comprises an acquisition module, a stall preprocessing module, a state calculation module, a state processing module and a waiting processing module; the acquisition module is used to acquire the current speed data of the stirring motor detected by the Hall sensor; the stall preprocessing module is used to control the stirring motor to stop working when the current speed data is less than or equal to a first preset speed threshold; the state calculation module is used to determine the motor working state parameter according to the current speed data, a preset mode calculation rule and a preset reference speed data when the current speed data is greater than the first preset speed threshold; the state processing module is used to control the compressor to stop working when the motor working state parameter is a preset state parameter, and control the waiting processing module to work, otherwise, control the compressor to continue refrigeration work; the waiting processing module is used to execute a restart waiting mode.

[0012] As an improvement of the above-mentioned scheme, the stall preprocessing module includes: a stall preprocessing unit, which is used to control the stirring motor to stop working and issue an error indication, and execute the alarm mode when the current speed data is less than a first preset speed threshold; the stall preprocessing unit includes: an alarm timing subunit, which is used to perform alarm timing work; an alarm processing subunit, which is used to control the compressor to stop working when the alarm time is greater than the first preset alarm time, and enter a standby state when the alarm time is greater than the second preset alarm time; wherein the second preset alarm time is greater than the first preset alarm time.

[0013] As an improvement of the above scheme, the state calculation module includes: a state calculation unit, used to calculate the difference between the preset reference speed data and the current speed data to obtain the speed difference; a state judgment unit, used to judge whether the speed difference is greater than a second preset speed threshold, when it is judged as yes, the abnormal working state parameters of the motor are output, and when it is judged as no, the normal working state parameters of the motor are output.

[0014] As an improvement of the above scheme, the waiting processing module includes: a waiting timing unit, which is used to perform waiting timing; a waiting processing unit, which is used to determine whether the waiting time is greater than a preset time threshold, and when the judgment is yes, the waiting mode ends, and when the judgment is no, the waiting timing unit is re-controlled to work and the judgment work is re-executed; or it is used to obtain temperature data in the ice-making chamber and calculate the temperature change rate during the waiting time, determine whether the waiting time is greater than the preset time threshold and whether the temperature change rate during the waiting time is greater than the preset change rate, and when the judgment is yes, the waiting mode ends, and when the judgment is no, the waiting timing unit is re-controlled to work and the judgment work is re-executed.

[0015] The implementation of the present invention has the following beneficial effects:

[0016] The present invention adopts a Hall sensor which is not easily affected by temperature to detect the current motor speed in real time to improve the accuracy of data detection; the preset motor protection control work is performed according to the current motor speed and preset data to protect the motor, avoid affecting the normal operation of the motor and the occurrence of motor jam, greatly improve the service life of the motor, and ensure the stable operation of the snow melting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a flow chart of a motor protection control method of a snow melt machine of the present invention;

[0018] Figure 2 It is a structural schematic diagram of a main controller of a motor protection control system of the present invention;

[0019] Figure 3 It is a structural schematic diagram of a stall pretreatment module of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the state calculation module of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the waiting processing module of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0023] like Figure 1 As shown, a specific embodiment of the present invention provides a motor protection control method for a snow melting machine, comprising:

[0024] S101, obtaining the current speed data of the stirring motor detected by the Hall sensor;

[0025] It should be noted that the Hall sensor and the magnet component are both arranged on the outside of the ice bucket, the magnet component is installed on the external rotating shaft of the stirring motor, the Hall sensor is located on one side of the magnet component, and the Hall sensor is used to detect the current speed data of the stirring motor. The data detected by the Hall sensor is not easily affected by temperature and external factors, thereby effectively improving the accuracy of the detection data.

[0026] S102, determining whether the current speed data is less than or equal to a first preset speed threshold, if it is determined to be yes, controlling the stirring motor to stop working, if it is determined to be no, executing step S103;

[0027] It should be noted that when the current speed data of the stirring motor is less than or equal to the first preset speed threshold, it means that the motor is seriously obstructed and is prone to stalling if it continues to work; at this time, the stirring motor is controlled to stop working to protect the motor.

[0028] Furthermore, when the current speed data is less than or equal to the first preset speed threshold, in addition to controlling the stirring motor to stop working, an error indication is also issued, and the alarm mode is executed. By performing an error indication, the user is informed to perform maintenance as soon as possible, thereby improving the safety of equipment use. Among them, the error indication method includes but is not limited to an error indicator light, an error voice, and a wireless error. Wireless error reporting is to send the alarm information to the user's mobile terminal via wireless means to realize wireless error reporting.

[0029] Preferably, the first preset speed threshold is preferably 5 rpm, but is not limited thereto and can be adjusted according to actual needs.

[0030] Preferably, the steps of the alarm mode operation include: performing alarm timing; when the alarm time is greater than a first preset alarm time, controlling the compressor to stop working; when the alarm time is greater than a second preset alarm time, entering a standby state; wherein the second preset alarm time is greater than the first preset alarm time.

[0031] It should be noted that after the stirring motor is controlled to stop working, the alarm timing is performed. When the alarm time is greater than the first preset alarm time, the compressor is controlled to stop working; when the alarm time is greater than the second preset alarm time, the machine enters the standby state, waiting for the user to perform maintenance and repair work, thereby protecting the equipment, avoiding further abnormal conditions of related equipment, and improving the safety of equipment use.

[0032] The second preset alarm time is greater than the first preset alarm time. The specific values ​​of the second preset alarm time and the first preset alarm time can be adjusted according to actual conditions and are not restricted here.

[0033] S103, determining motor working state parameters according to the current speed data, preset mode calculation rules and preset reference speed data;

[0034] Specifically, the step of determining the compressor operating state parameter according to the current speed data, the preset mode calculation rule and the preset reference speed data comprises:

[0035] Step 1: Calculate the difference between the preset reference speed data and the current speed data to obtain a speed difference;

[0036] It should be noted that the preset reference speed data is the reference speed data of the stirring motor. The specific value can refer to the actual speed data of the stirring motor used, which will not be elaborated here.

[0037] Step 2: determine whether the speed difference is greater than a second preset speed threshold, and if so, output the abnormal working state parameters of the motor; if not, output the normal working state parameters of the motor.

[0038] It should be noted that when the speed difference between the preset reference speed data and the current speed data is greater than the second preset speed threshold, it means that the current stirring motor is in an abnormal working state and is blocked to a greater extent, and the motor abnormal working state parameters are output at this time; otherwise, it means that the current stirring motor is in a normal working state, and the motor normal working state parameters are output at this time. For example, if the preset reference speed data is 2000rpm, the current speed data is 1700rpm and the second preset speed threshold is 200rpm. By calculation, it can be obtained that the speed difference is 300rpm. At this time, the speed difference is greater than the second preset speed threshold, which means that the stirring motor is in an abnormal working state.

[0039] S104, determining whether the motor working state parameter is a preset state parameter, if it is determined to be yes, controlling the compressor to stop working, and executing step S105, if it is determined to be no, controlling the compressor to continue cooling work, and returning to step S101;

[0040] It should be noted that the preset state parameters are abnormal working state parameters. When the motor working state parameters are preset state parameters, in order to prevent the stirring motor from being blocked, the compressor is controlled to stop working to prevent the hardness of the smoothie from continuing to increase; in addition, as the temperature gradually decreases, the effect of the stirring motor being blocked by the smoothie decreases, and the motor speed increases accordingly, gradually returning to a normal working state. Otherwise, it means that the stirring motor is in a normal working state, and the compressor continues to refrigerate the smoothie.

[0041] S105, executing the restart waiting mode, and returning to step S101 after the mode ends.

[0042] Specifically, the step of executing the restart waiting mode includes:

[0043] Step 1: Waiting time.

[0044] Step 2: determine whether the waiting time is greater than a preset time threshold. If it is, the waiting mode ends. If it is not, return to step 1.

[0045] It should be noted that when the compressor stops working, a waiting time is performed; when the waiting time is greater than the preset time threshold, the compressor restart waiting mode is executed. At this time, the working steps S101 to S104 are re-executed; when the user's shutdown or power-off operation is received, the device executes the shutdown or power-off operation.

[0046] Preferably, in another embodiment, the step of executing the restart waiting mode further includes:

[0047] Step 1: Waiting time.

[0048] Step 2, obtaining temperature data in the ice making chamber, and calculating the temperature change rate during the waiting time;

[0049] Step 3: determine whether the waiting time is greater than a preset time threshold and whether the temperature change rate during the waiting time is greater than a preset change rate. If it is determined to be yes, the waiting mode ends; if it is determined to be no, return to step 1.

[0050] It should be noted that the temperature data in the ice-making chamber is obtained in real time through the temperature sensor, and the temperature change rate during the waiting time is calculated. When the waiting time is greater than the preset time threshold and the temperature change rate during the waiting time is greater than the preset change rate, it means that during the waiting time, the hardness of the ice in the current ice-making chamber has gradually decreased. At this time, the stirring motor is in a suitable obstructed state, that is, the requirements for the normal working state of the stirring motor have been met. At this time, the working steps S101 to S104 are re-executed. By adopting multi-parameter judgment processing to greatly improve the accuracy of motor control work, the motor control protection effect is improved. When the user's shutdown or shutdown work is received, the device executes the shutdown or shutdown work.

[0051] Preferably, the present invention further provides a motor protection control system for a snow melting machine, comprising a Hall sensor, a magnet component and a main controller, wherein the Hall sensor and the magnet component are both arranged on the outside of the ice bucket, the magnet component is installed on the external rotating shaft of the stirring motor, the Hall sensor is located on one side of the magnet component, and the Hall sensor is used to detect the current speed data of the stirring motor;

[0052] like Figure 2As shown, the main controller 1 includes an acquisition module 11, a stall preprocessing module 12, a state calculation module 13, a state processing module 14 and a waiting processing module 15;

[0053] The acquisition module 11 is used to acquire the current speed data of the stirring motor detected by the Hall sensor;

[0054] It should be noted that the data detected by the Hall sensor is not easily affected by temperature and external factors, thereby effectively improving the accuracy of the detection data.

[0055] The stall preprocessing module 12 is used to control the stirring motor to stop working when the current speed data is less than or equal to a first preset speed threshold;

[0056] It should be noted that when the current speed data of the stirring motor is less than or equal to the first preset speed threshold, it means that the motor is seriously obstructed and is prone to stalling if it continues to work; at this time, the stirring motor is controlled to stop working to protect the motor.

[0057] Specifically, Figure 3 As shown, the stall pre-processing module 12 includes:

[0058] The stall preprocessing unit 121 is used to control the stirring motor to stop working and issue an error indication when the current speed data is less than a first preset speed threshold, and to perform an alarm mode operation;

[0059] It should be noted that when the current speed data is less than or equal to the first preset speed threshold, in addition to controlling the stirring motor to stop working, an error indication is also issued, and the alarm mode is executed. By performing an error indication, the user is informed to perform maintenance as soon as possible to improve the safety of equipment use. Among them, the error indication method includes but is not limited to an error indicator light, an error voice, and a wireless error. Wireless error reporting is to send the alarm information to the user's mobile terminal via wireless means to realize wireless error reporting.

[0060] The stall preprocessing unit 121 includes:

[0061] The alarm timing subunit 1211 is used to perform alarm timing work;

[0062] The alarm processing subunit 1212 is used to control the compressor to stop working when the alarm time is greater than the first preset alarm time, and to enter the standby state when the alarm time is greater than the second preset alarm time; wherein the second preset alarm time is greater than the first preset alarm time.

[0063] It should be noted that after the stirring motor is controlled to stop working, the alarm timing is performed. When the alarm time is greater than the first preset alarm time, the compressor is controlled to stop working; when the alarm time is greater than the second preset alarm time, the machine enters the standby state, waiting for the user to perform maintenance and repair work, thereby protecting the equipment, avoiding further abnormal conditions of related equipment, and improving the safety of equipment use.

[0064] The second preset alarm time is greater than the first preset alarm time. The specific values ​​of the second preset alarm time and the first preset alarm time can be adjusted according to actual conditions and are not restricted here.

[0065] The state calculation module 13 is used to determine the motor working state parameters according to the current speed data, the preset mode calculation rule and the preset reference speed data when the current speed data is greater than the first preset speed threshold;

[0066] Specifically, Figure 4 As shown, the state calculation module 13 includes:

[0067] The state calculation unit 131 is used to calculate the difference between the preset reference speed data and the current speed data to obtain a speed difference;

[0068] It should be noted that the preset reference speed data is the reference speed data of the stirring motor. The specific value can refer to the actual speed data of the stirring motor used, which will not be elaborated here.

[0069] The state judgment unit 132 is used to judge whether the speed difference is greater than a second preset speed threshold, and if it is judged to be yes, it outputs the abnormal working state parameters of the motor, and if it is judged to be no, it outputs the normal working state parameters of the motor.

[0070] It should be noted that when the speed difference between the preset reference speed data and the current speed data is greater than the second preset speed threshold, it means that the current stirring motor is in an abnormal working state and is blocked to a greater extent, and the motor abnormal working state parameters are output at this time; otherwise, it means that the current stirring motor is in a normal working state, and the motor normal working state parameters are output at this time. For example, if the preset reference speed data is 2000rpm, the current speed data is 1700rpm and the second preset speed threshold is 200rpm. By calculation, it can be obtained that the speed difference is 300rpm. At this time, the speed difference is greater than the second preset speed threshold, which means that the stirring motor is in an abnormal working state.

[0071] The state processing module 14 is used to control the compressor to stop working and control the waiting processing module 15 to work when the motor working state parameter is a preset state parameter, otherwise, control the compressor to continue cooling work;

[0072] It should be noted that the preset state parameters are abnormal working state parameters. When the motor working state parameters are preset state parameters, in order to prevent the stirring motor from being blocked, the compressor is controlled to stop working to prevent the hardness of the smoothie from continuing to increase; in addition, as the temperature gradually decreases, the effect of the stirring motor being blocked by the smoothie decreases, and the motor speed increases accordingly, gradually returning to a normal working state. Otherwise, it means that the stirring motor is in a normal working state, and the compressor continues to refrigerate the smoothie.

[0073] The waiting processing module 15 is used to execute the restart waiting mode.

[0074] Specifically, Figure 5 As shown, the waiting processing module 15 includes:

[0075] A waiting timing unit 151 is used for waiting timing;

[0076] The waiting processing unit 152 is used to determine whether the waiting time is greater than a preset time threshold. If it is determined to be yes, the waiting mode ends. If it is determined to be no, the waiting timing unit 151 is controlled to work again and the determination work is re-executed.

[0077] It should be noted that when the compressor stops working, a waiting time is performed; when the waiting time is greater than the preset time threshold, the compressor restart waiting mode is executed. At this time, the working steps S101 to S104 are re-executed; when the user's shutdown or power-off operation is received, the device executes the shutdown or power-off operation.

[0078] In another embodiment, the waiting processing unit 152 is also used to obtain temperature data in the ice-making chamber, and calculate the temperature change rate during the waiting time, to determine whether the waiting time is greater than a preset time threshold and whether the temperature change rate during the waiting time is greater than a preset change rate. When the judgment is yes, the waiting mode ends; when the judgment is no, the waiting timing unit 151 is re-controlled to work and the judgment work is re-executed.

[0079] It should be noted that the temperature data in the ice-making chamber is obtained in real time through the temperature sensor, and the temperature change rate during the waiting time is calculated. When the waiting time is greater than the preset time threshold and the temperature change rate during the waiting time is greater than the preset change rate, it means that during the waiting time, the hardness of the ice in the current ice-making chamber has gradually decreased. At this time, the stirring motor is in a suitable obstructed state, that is, the requirements for the normal working state of the stirring motor have been met. At this time, the working steps S101 to S104 are re-executed. By adopting multi-parameter judgment processing to greatly improve the accuracy of motor control work, the motor control protection effect is improved. When the user's shutdown or shutdown work is received, the device executes the shutdown or shutdown work.

[0080] To summarize, the present invention uses a Hall sensor that is not easily affected by temperature to detect the current motor speed in real time to improve data detection accuracy; the preset motor protection control work is performed according to the current motor speed and preset data to protect the motor, avoid affecting the normal operation of the motor and causing the motor to stall, greatly improve the service life of the motor, and ensure the stable operation of the snow melting machine.

[0081] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A motor protection control method for a snow melting machine, characterized in that: include: S101, obtaining the current speed data of the stirring motor detected by the Hall sensor; S102, determining whether the current speed data is less than or equal to a first preset speed threshold, if it is determined to be yes, controlling the stirring motor to stop working, if it is determined to be no, executing step S103; S103, determining motor working state parameters according to the current speed data, preset mode calculation rules and preset reference speed data; S104, determining whether the motor working state parameter is a preset state parameter, if it is determined to be yes, controlling the compressor to stop working, and executing step S105, if it is determined to be no, controlling the compressor to continue cooling work, and returning to step S101; S105, executing the restart waiting mode, and returning to step S101 after the mode ends.

2. The motor protection control method according to claim 1, characterized in that: When the current rotation speed data is less than or equal to the first preset rotation speed threshold, the stirring motor is controlled to stop working and issue an error indication, and the alarm mode is executed.

3. The motor protection control method according to claim 2, characterized in that: The steps of the alarm mode operation include: Perform alarm timing work; When the alarm time is greater than the first preset alarm time, the compressor is controlled to stop working; When the alarm time is greater than the second preset alarm time, entering a standby state; Wherein, the second preset alarm time is greater than the first preset alarm time.

4. The motor protection control method according to claim 1, characterized in that: The step of determining the compressor working state parameter according to the current speed data, the preset mode calculation rule and the preset reference speed data comprises: Calculating a difference between the preset reference speed data and the current speed data to obtain a speed difference; It is determined whether the speed difference is greater than a second preset speed threshold value. If it is determined to be yes, the abnormal working state parameters of the motor are output; if it is determined to be no, the normal working state parameters of the motor are output.

5. The motor protection control method according to claim 1, characterized in that: The step of executing the restart waiting mode comprises: S201, waiting time; S202, determine whether the waiting time is greater than a preset time threshold, if it is determined to be yes, the waiting mode ends, if it is determined to be no, return to step S201.

6. The motor protection control method according to claim 1, characterized in that: The step of executing the restart waiting mode also includes: S301, waiting time; S302, obtaining temperature data in the ice-making chamber, and calculating the temperature change rate during the waiting time; S303, determine whether the waiting time is greater than a preset time threshold and whether the temperature change rate within the waiting time is greater than a preset change rate. If it is determined to be yes, the waiting mode ends; if it is determined to be no, return to step S301.

7. A motor protection control system for a snow melting machine, characterized in that: It includes a Hall sensor, a magnet component and a main controller, wherein the Hall sensor and the magnet component are both arranged on the outside of the ice bucket, the magnet component is installed on the external rotating shaft of the stirring motor, the Hall sensor is located on one side of the magnet component, and the Hall sensor is used to detect the current speed data of the stirring motor; The main controller includes an acquisition module, a stall preprocessing module, a state calculation module, a state processing module and a waiting processing module; The acquisition module is used to acquire the current speed data of the stirring motor detected by the Hall sensor; The stall preprocessing module is used to control the stirring motor to stop working when the current speed data is less than or equal to a first preset speed threshold; The state calculation module is used to determine the motor working state parameters according to the current speed data, the preset mode calculation rule and the preset reference speed data when the current speed data is greater than the first preset speed threshold; The state processing module is used to control the compressor to stop working and control the waiting processing module to work when the motor working state parameter is a preset state parameter, otherwise, control the compressor to continue cooling work; The waiting processing module is used to execute the restart waiting mode.

8. The motor protection control system according to claim 7, characterized in that: The stall preprocessing module comprises: A stall preprocessing unit, used to control the stirring motor to stop working and issue an error indication when the current speed data is less than a first preset speed threshold, and to execute an alarm mode operation; The stall preprocessing unit comprises: An alarm timing subunit, used for performing alarm timing work; An alarm processing subunit, used to control the compressor to stop working when the alarm time is greater than a first preset alarm time, and to enter a standby state when the alarm time is greater than a second preset alarm time; Wherein, the second preset alarm time is greater than the first preset alarm time.

9. The motor protection control system according to claim 7, characterized in that: The state calculation module comprises: a state calculation unit, configured to calculate a difference between the preset reference speed data and the current speed data to obtain a speed difference; The state judgment unit is used to judge whether the speed difference is greater than a second preset speed threshold value, and if it is judged to be yes, then the abnormal working state parameter of the motor is output; if it is judged to be no, then the normal working state parameter of the motor is output.

10. The motor protection control system according to claim 7, characterized in that: The waiting processing module comprises: A waiting timing unit is used for waiting timing; A waiting processing unit is used to determine whether the waiting time is greater than a preset time threshold. If it is determined to be yes, the waiting mode ends. If it is determined to be no, the waiting timing unit is controlled again to work and the determination work is re-executed; Or it is used to obtain the temperature data in the ice-making chamber, and calculate the temperature change rate during the waiting time, to determine whether the waiting time is greater than a preset time threshold and whether the temperature change rate during the waiting time is greater than a preset change rate, if it is determined to be yes, the waiting mode ends, if it is determined to be no, the waiting timing unit is re-controlled to work and the judgment work is re-executed.

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