Control method for driving motor of ice cream machine and ice cream machine

Abstract

The invention relates to the technical field of ice cream machines, in particular to a driving motor control method of an ice cream machine and the ice cream machine, and the driving motor comprises a stirring motor for driving a stirring cutter to rotate and a lifting motor for driving a cup assembly to slide towards the stirring cutter or driving the stirring cutter to slide towards the cup assembly; the current in the operation process of the stirring motor and the lifting motor is monitored in real time through the detection unit, so that the rotating speed change of the lifting motor and / or the stirring motor at different working positions is changed to automatically adjust a program, and the purpose of one-key operation intelligent stirring is achieved; according to the ice cream stirring device, only one working key can be adopted for soft and hard ice cream with different kinds of sugar, fat content or freezing temperature, one-key operation of all formulas is achieved, the stirring rotating speed is automatically adjusted actively according to the load current condition, and therefore the taste of the stirred ice cream is more ideal.

Description

Technical Field

[0001] This invention relates to the field of ice cream machine technology, and specifically to a drive motor control method for an ice cream machine and an ice cream machine. Background Technology

[0002] Most existing publicly available ice cream making technologies employ dual motors to control the stirring and lifting speeds separately. When stirring different types of soft or hard ice cream with varying sugar or fat content, the stirring or lifting speeds differ. The purpose is to specifically stir the ice cream according to its different sugar or fat content to achieve a smooth texture.

[0003] The texture and consistency of ice cream can vary significantly depending on factors such as sugar and fat content, freezer temperature settings, and freezing time. For example, freezing food for too long or at too low a temperature will increase the power of the preset churning program, resulting in noise, vibration, and an unpleasant texture. Conversely, freezing food for too short a time or at insufficient temperature will result in a liquefied, liquid-like texture, also leading to a less than ideal taste. Furthermore, unpredictable amounts of frozen food can cause long waiting times and unsatisfactory results when churning a small quantity using the preset full-cup churning time. Finally, it can be difficult to find the optimal program for creating custom recipes.

[0004] For example, the invention patent with publication number CN115606674A provides a detailed description of the stirring speed or lifting speed of soft and hard ice cream with different sugar or fat contents; however, the existing technology has many buttons on the control panel and diverse programs, and cannot change the stirring and lifting speed according to the different sugar or fat contents of soft and hard ice cream, making it difficult to achieve targeted stirring according to the different sugar or fat contents of soft and hard ice cream, resulting in poor taste of the stirred ice cream.

[0005] Therefore, there is still room for improvement and development in existing technologies. Summary of the Invention

[0006] To address the problems of existing technologies, this invention proposes a drive motor control method and an ice cream machine. By using a detection unit to monitor the current of the stirring motor and lifting motor in real time during operation, the speed of the lifting motor and / or stirring motor changes at different working positions to automatically adjust the program, achieving one-button intelligent stirring. This means that a single button can be used for different types of soft and hard ice cream with varying sugar and fat content or freezing temperatures, enabling one-button operation for all recipes. The stirring speed is automatically adjusted based on the load current to achieve a more ideal texture in the stirred ice cream.

[0007] To achieve the above objectives, the technical solution applied in this invention is as follows: A method for controlling the drive motor of an ice cream machine, wherein the drive motor includes a stirring motor for driving the stirring blade to rotate and a lifting motor for driving the cup assembly and the stirring blade to generate relative displacement. The control method includes the following steps: S1. Start the machine. The control unit controls the stirring motor and lifting motor to run at the preset no-load speed. S2. When the stirring blade touches the food in the cup assembly, the stirring motor and the lifting motor generate current fluctuations. The detection unit detects the current fluctuation signal and transmits it to the control unit. After comparing and analyzing the current information with the preset current information, the control unit dynamically adjusts the stirring motor and / or the lifting motor to run at the preset stirring speed until the stirring blade is at the bottom of the cup assembly to complete the layered cutting of the food. S3. When the stirring blade is at the bottom of the cup assembly, the limit switch is triggered. The limit switch outputs a positioning signal to the control unit. The control unit controls the lifting motor to reverse at a preset mixing speed. The control unit also controls the stirring motor to rotate at a preset mixing speed until the cup assembly and the stirring blade return to the initial position, completing the food mixing.

[0008] According to the above scheme, after the control unit dynamically adjusts the stirring motor and the lifting motor to run at a preset stirring speed in step S2, the following steps are also included: S21. The detection unit detects the real-time stirring current of the stirring motor and the real-time lifting current of the lifting motor in real time. S22. The control unit compares the real-time stirring current with the preset stirring current based on the real-time stirring current and the real-time rising and falling current transmitted by the detection unit, and compares the real-time rising and falling current with the preset rising and falling current. S23. The control unit adjusts the speed of the stirring motor and the lifting motor in real time based on the detected current comparison information.

[0009] According to the above scheme, in step S23, the control unit adjusts the speed of the stirring motor and the lifting motor in real time based on the detected current comparison information, including: S231. Based on the real-time stirring current and the real-time lifting current, adjust the lifting motor to operate at the preset steady-state lifting speed. S232. By comparing the real-time stirring current with the preset stirring current, the speed of the stirring motor is adjusted in real time until the speed of the stirring motor is adjusted to a steady-state stirring speed.

[0010] According to the above scheme, in step S23, the control unit adjusts the speed of the stirring motor and the lifting motor in real time based on the detected current comparison information, including: S233. Based on the real-time stirring current and the preset stirring current, adjust the stirring motor to operate at the preset steady-state stirring speed; S234. The real-time lifting current is compared with the preset lifting current, and the speed of the lifting motor is adjusted in real time until the speed of the lifting motor is adjusted to a steady-state lifting speed.

[0011] According to the above scheme, in step S23, the control unit adjusts the speed of the stirring motor and the lifting motor in real time based on the detected current comparison information, including: S235. Based on the real-time stirring current and the preset stirring current, adjust the stirring motor to operate at the preset steady-state stirring speed; S236. Based on the real-time lifting current and the preset lifting current, adjust the lifting motor to the preset steady-state lifting speed; until the stirring motor and the lifting motor are running at steady-state stirring speed and steady-state lifting speed respectively.

[0012] According to the above scheme, after the control unit controls the lifting motor to reverse at a preset mixing speed in step S3, and the control unit controls the stirring motor to rotate at a preset mixing speed, the following steps are also included: S31. Based on the stirring speed of the stirring motor and the lifting motor in S2, adjust the mixing speed of the lifting motor and the mixing speed of the stirring motor.

[0013] According to the above scheme, in step S31, if the stirring motor in step S2 shows a decreasing speed trend or the lifting motor shows an accelerating speed trend, then the mixing speed of the stirring motor is adjusted to a low speed state and the lifting motor is adjusted to a high speed state.

[0014] According to the above scheme, in step S31, if the stirring motor in step S2 shows an accelerating trend or the lifting motor shows a decelerating trend, then the mixing speed of the stirring motor is adjusted to a high-speed state and the lifting motor is adjusted to a low-speed state.

[0015] The present invention discloses an ice cream machine, comprising a main unit, on which a mixing blade and a cup assembly are mounted, the cup assembly being coaxially located below the mixing blade; a drive motor, including a lifting motor and a stirring motor, wherein the stirring motor drives the mixing blade to rotate, and the lifting motor drives the mixing blade and the cup assembly to generate relative axial displacement; and a control system, comprising operating buttons, a control unit for controlling the operation of the drive motor, and a detection unit for monitoring the operating current and / or speed information of the drive motor; the detection unit detects the current and / or speed information of the lifting motor and the stirring motor in real time and transmits the detection information to the control unit; the control unit compares the received information with preset information and outputs control signals to the lifting motor and the stirring motor to adjust the speed of the lifting motor and the stirring motor.

[0016] According to the above scheme, there is only one working button.

[0017] Beneficial effects of this invention: This invention uses a detection unit to monitor the current of the stirring motor and the lifting motor in real time during operation. By changing the speed of the lifting motor and / or the stirring motor at different working positions, the program can be automatically adjusted to achieve one-button intelligent stirring. That is, a single button can be used for soft and hard ice cream of different types of sugar, fat content or freezing temperature, realizing one-button operation of all recipes. It actively adjusts the stirring speed according to the load current to achieve a more ideal taste of the stirred ice cream. Attached Figure Description

[0018] Figure 1 This is a flowchart of a drive motor control method for an ice cream machine according to the present invention; Figure 2 This is a schematic diagram of an ice cream machine according to the present invention; Figure 3 This is a cross-sectional view of the ice cream machine in Embodiment 1; Figure 4 This is a schematic diagram of the assembly of the stirring motor and stirring blade in Example 1; Figure 5 This is a schematic diagram of the assembly of the lifting motor and the lifting platform in Embodiment 1; Figure 6 This is an exploded bottom view of the cup assembly of the present invention; Figure 7 This is an exploded top view of the cup assembly of the present invention; Figure 8 This is a cross-sectional view of the ice cream machine in Embodiment 2; Figure 9 This is a schematic diagram of the assembly of the drive motor and the stirring blade in Example 2; In the picture: 1. Main unit; 11. Working button; 12. Progress light bar; 14. Stirring blade; 141. Connecting rod; 142. Magnet one; 15. Safety switch; 16. PCB board; 2. Cup assembly; 21. Cup lid; 211. Perforation; 212. Magnet two; 213. Blade assembly; 214. Clip one; 22. Freezing cup; 221. Convex and concave structure; 222. Slot one; 223. Clip two; 3. Stirring motor; 31. Bracket one; 4. Lifting motor; 41. Screw; 42. Lifting platform; 421. Slot two; 43. Guide shaft; 44. Guide cylinder; 45. Limit switch one; 46. Limit switch two; 47. Bracket two; 5. Bracket three. Detailed Implementation

[0019] The technical solution of the present invention will be described below with reference to the accompanying drawings and embodiments. Example

[0020] like Figure 1 As shown, the present invention discloses a drive motor control method for an ice cream machine. The drive motor includes a stirring motor 3 for driving the stirring blade 14 to rotate and a lifting motor 4 for driving the cup assembly 2 and the stirring blade 14 to generate relative displacement. The control method includes the following steps: S1. Start the machine. The control unit controls the stirring motor 3 and the lifting motor 4 to run at the preset no-load speed. Among them, the stirring motor 3 runs at a preset no-load low speed to achieve low noise; the lifting motor 4 runs at a preset no-load high speed to achieve rapid lifting and shortening of stirring time. Preferably, when the stirring motor 3 operates at a preset no-load low speed, the no-load speed is 600 RPM and the no-load current is <0.8A; when the lifting motor 4 operates at a preset no-load high speed, the no-load lifting speed is 3.4 mm / s and the no-load current is <1.2A; when the stirring motor 3 operates under load, the optimal stirring speed is 1200 RPM and the optimal stirring current is 2.6 ± 0.4A; when the lifting motor 4 operates under load, the optimal lifting speed is 0.85 mm / s and the optimal lifting current is 1.6 ± 0.5A. These values ​​are obtained through actual testing based on the motor power characteristic curve, standard ice cream recipes, and the optimal freezing temperature of household refrigerators at -18℃.

[0021] Preferably, the rated operating voltage of the stirring motor 3 is 230V / 50Hz, and the rated operating voltage of the lifting motor 4 is DC12V.

[0022] S2. When the stirring blade 14 touches the food in the cup assembly 2, the stirring motor 3 and the lifting motor 4 generate current fluctuations (relative to the load when unloaded). The detection unit detects the current fluctuation signal and transmits it to the control unit. After comparing and analyzing the current information with the preset current information, the control unit dynamically adjusts the stirring motor 3 and / or the lifting motor 4 to run at the preset stirring speed (preferably, the stirring motor 3 and the lifting motor 4 are adjusted to the optimal working speed) until the stirring blade 14 is at the bottom of the cup assembly 2 to complete the layered cutting of the food. Preferably, when the stirring motor 3 is adjusted to the optimal working speed, the stirring speed is 1200 RPM and the stirring current is 2.6 ± 0.4 A; when the lifting motor 4 is adjusted to the optimal working speed, the lifting speed is 0.85 mm / s and the lifting current is 1.6 ± 0.5 A.

[0023] S3. When the stirring blade 14 is at the bottom of the cup assembly 2, the limit switch is triggered (preferred, such as...). Figure 5As shown, the limit switch includes limit switch one 45 and limit switch two 46. When the stirring blade 14 moves relative to the cup assembly 2, limit switch two 46 is triggered; when the cup assembly 2 moves relative to the stirring blade 14, limit switch one 45 is triggered. The limit switches output a positioning signal to the control unit, which controls the lifting motor 4 to reverse at a preset mixing speed. The control unit also controls the stirring motor 3 to rotate at a preset mixing speed until the cup assembly 2 and the stirring blade 14 return to their initial positions, thus completing the food mixing.

[0024] Preferably, when the lifting motor 4 is reversed at a preset mixing speed, the lifting speed is 3.4 mm / s and the lifting current is <1.2A; when the stirring motor 3 is rotated at a preset mixing speed, the stirring speed is 600 RPM and the stirring current is <0.8A.

[0025] This invention uses a detection unit to monitor the current of the stirring motor 3 and the lifting motor 4 in real time during operation. By changing the speed of the lifting motor 3 and / or the stirring motor 4 at different working positions, the program can be automatically adjusted to actively adjust the stirring speed according to the load. This allows for the selection of different working speeds for soft and hard ice creams with different sugar and fat contents or freezing temperatures, thus achieving a smooth and delicate texture.

[0026] Furthermore, after the control unit dynamically adjusts the stirring motor 3 and the lifting motor 4 to operate at a preset stirring speed in step S2, the process also includes: S21. The detection unit detects the real-time stirring current of the stirring motor 3 and the real-time lifting current of the lifting motor 4 in real time. S22. The control unit compares the real-time stirring current with the preset stirring current based on the real-time stirring current and the real-time rising and falling current transmitted by the detection unit, and compares the real-time rising and falling current with the preset rising and falling current. S23. The control unit adjusts the speed of the stirring motor 3 and the lifting motor 4 in real time based on the detected current comparison information.

[0027] Furthermore, in step S23, the control unit adjusts the speeds of the stirring motor 3 and the lifting motor 4 in real time based on the detected current comparison information, including: S231. Based on the real-time stirring current and the real-time lifting current, adjust the lifting motor 4 to operate at the preset steady-state lifting speed. S232. By comparing the real-time stirring current with the preset stirring current, the speed of the stirring motor 3 is adjusted in real time until the speed of the stirring motor 3 is adjusted to a steady-state stirring speed.

[0028] Furthermore, in step S23, the control unit adjusts the speeds of the stirring motor 3 and the lifting motor 4 in real time based on the detected current comparison information, including: S233. Based on the real-time stirring current and the preset stirring current, the stirring motor 3 is adjusted to operate at the preset steady-state stirring speed. S234. The real-time lifting current is compared with the preset lifting current, and the speed of the lifting motor 4 is adjusted in real time until the speed of the lifting motor 4 is adjusted to a steady-state lifting speed.

[0029] Furthermore, in step S23, the control unit adjusts the speeds of the stirring motor 3 and the lifting motor 4 in real time based on the detected current comparison information, including: S235. Based on the real-time stirring current and the preset stirring current, the stirring motor 3 is adjusted to operate at the preset steady-state stirring speed. S236. Based on the real-time lifting current and the preset lifting current, adjust the lifting motor 4 to the preset steady-state lifting speed; until the stirring motor 3 and the lifting motor 4 are running at the steady-state stirring speed and steady-state lifting speed respectively.

[0030] If the stirring current of the stirring motor 3 and the lifting current of the lifting motor 4 are both within the preset optimal current value range, this state will be maintained until the food layering and cutting are completed. If the stirring current of the stirring motor 3 is in the preset high current range, the lifting speed of the lifting motor 4 is adjusted to the preset low speed range until the stirring current of the stirring motor 3 is in the preset optimal stirring current range. This state is maintained until the food is layered and cut (in order to reduce the stirring load and reduce noise and vibration). If the stirring current of the stirring motor 3 is in the preset low current range, the lifting speed of the lifting motor 4 is adjusted to the preset medium speed range or the preset high speed range until the stirring current of the stirring motor 3 is in the preset optimal stirring current range. This state is maintained until the food is layered and cut (in order to shorten the stirring time). If the stirring current of the stirring motor 3 and the lifting current of the lifting motor 4 are both in the preset high current range, then the stirring speed of the stirring motor 3 is adjusted to the preset high speed range, and the lifting speed of the lifting motor 4 is adjusted to the preset low speed range, until the stirring current of the stirring motor 3 and the lifting current of the lifting motor 4 are in the preset optimal range, and this state is maintained until the food layering and cutting is completed. If the stirring current of the stirring motor 3 and the lifting current of the lifting motor 4 are both in the preset low current range, then the stirring speed of the stirring motor 3 is adjusted to the preset low speed range, and the lifting speed of the lifting motor 4 is adjusted to the preset high speed range, until the stirring current of the stirring motor 3 and the lifting current of the lifting motor 4 are in the preset optimal setting range, and this state is maintained until the food layering and cutting is completed.

[0031] Preferably, when the stirring current of the stirring motor 3 is >2.6 + 0.4 A, the stirring motor 3 is adjusted to accelerate stirring; when the lifting current of the lifting motor 4 is >1.6 + 0.5 A, the lifting motor 4 is adjusted to decelerate lifting; when the stirring current of the stirring motor 3 is <2.6 - 0.4 A, the stirring motor 3 is adjusted to decelerate stirring; when the lifting current of the lifting motor 4 is <1.6 - 0.5 A, the lifting motor 4 is adjusted to accelerate lifting.

[0032] Furthermore, after the control unit controls the lifting motor 4 to reverse at a preset mixing speed in step S3, and the control unit controls the stirring motor 3 to rotate at a preset mixing speed, the following steps are also included: S31. Based on the stirring speed of the stirring motor 3 and the lifting motor 4 in S2, adjust the mixing speed of the lifting motor 4 and the mixing speed of the stirring motor 3.

[0033] Furthermore, in step S31, if the stirring motor 3 in step S2 shows a decreasing speed trend or the lifting motor 4 shows an accelerating speed trend, then the mixing speed of the stirring motor 3 is adjusted to a low speed and the lifting motor 4 is adjusted to a high speed. The purpose of this setting is that, because the ingredients are relatively soft, the retraction needs to be slow and fast to avoid the ingredients being over-stirred and melted.

[0034] Preferably, when the mixing speed of the stirring motor 3 is adjusted to a low speed, the stirring speed is adjusted to 600 RPM; when the lifting motor 4 is adjusted to a high speed, the lifting speed is adjusted to 3.4 mm / s.

[0035] Furthermore, in step S31, if the stirring motor 3 in step S2 is accelerating or the lifting motor 4 is decelerating, then the mixing speed of the stirring motor 3 is adjusted to a high speed and the lifting motor 4 is adjusted to a low speed. The purpose of this setting is that, because the ingredients are relatively hard, the retraction requires a high speed and a slow retraction, to avoid inadequate mixing and coagulation.

[0036] Preferably, when the mixing speed of the stirring motor 3 is adjusted to a high speed, the stirring speed is adjusted to 1200 RPM; when the lifting motor 4 is adjusted to a low speed, the lifting speed is adjusted to 1.7 mm / s.

[0037] If the stirring current of the stirring motor 3 and the lifting current of the lifting motor 4 are both within the preset optimal load current range, this state is maintained until the food mixing is completed; when the food mixing is completed and the no-load state is reached, the stirring speed of the stirring motor 3 is controlled to run in the preset medium speed range, and the lifting speed of the lifting motor 4 is controlled to run in the preset medium speed range until the end. If the stirring current of the stirring motor 3 is in the preset high current range, the lifting speed of the lifting motor 4 is adjusted to the preset low speed range until the stirring current of the stirring motor 3 reaches the preset optimal load current range, and this state is maintained until the food mixing is completed; when the food mixing is completed and the no-load state is reached, the stirring speed of the stirring motor 3 is controlled to run in the preset high speed range, and the lifting speed of the lifting motor 4 is controlled to run in the preset low speed range until the end. If the stirring current of the stirring motor 3 is in the preset low current range, the lifting motor 4 is adjusted to the preset medium speed range or the preset high speed range until the stirring current of the stirring motor 3 reaches the preset optimal load current range, and this state is maintained until the food mixing is completed; when the food mixing is completed and the system is in an unloaded state, the stirring speed of the stirring motor 3 is controlled to run in the preset low speed range, and the lifting motor 4 is controlled to run in the preset high speed range until the end.

[0038] The preset information described in this invention includes the stirring current information of the stirring motor 3, the stirring speed information of the stirring motor 3, the lifting current information of the lifting motor 4, and the lifting speed information of the lifting motor 4. The purpose of this setting is to facilitate comparison with the real-time operating current and / or speed information of the drive motor, so as to achieve real-time adjustment of the speed of the lifting motor 3 and / or the stirring motor 4. Example

[0039] In this embodiment, when the stirring blade 14 touches the food in the cup assembly 2, the constant lifting motor 4 raises and lowers the speed, and the stirring motor 3 adjusts the stirring speed in real time, so that the stirring blade 14 raises and lowers at a constant speed. The stirring speed is adjusted in real time according to the detected changes in the lifting current of the lifting motor 4, so that the lifting current of the lifting motor 4 is controlled within the preset information range in real time, until the food is layered and the food is mixed.

[0040] Preferably, when the lifting speed of the constant lifting motor 4 is 0.75 mm / s, the lifting current of the lifting motor 4 is 1.6±0.5A; when the lifting current of the lifting motor 4 is detected to be greater than 1.6+0.5A, the stirring motor 3 is adjusted to accelerate stirring; when the lifting current of the lifting motor 4 is detected to be less than 1.6-0.5A, the stirring motor 3 is adjusted to decelerate stirring. Example

[0041] In this embodiment, when the stirring blade 14 touches the food in the cup assembly 2, the stirring speed of the constant stirring motor 3 is adjusted in real time, and the lifting speed of the lifting motor 4 is adjusted in real time to achieve a constant stirring speed of the stirring blade 14. The lifting speed is adjusted in real time according to the detected change in the stirring current of the stirring motor 3, so that the stirring current of the stirring motor 3 is controlled within the preset information range in real time until the food is layered and the food is mixed.

[0042] Preferably, when the stirring speed of the constant stirring motor 3 is 1200 RPM, the stirring current of the stirring motor 3 is 2.6±0.4A; when the stirring current of the stirring motor 3 is detected to be greater than 2.6+0.4A, the lifting motor 4 is adjusted to decelerate the lifting and lowering; when the stirring current of the stirring motor 3 is detected to be less than 2.6-0.4A, the lifting motor 4 is adjusted to accelerate the lifting and lowering. Example

[0043] like Figures 2 to 7 As shown, the ice cream machine of the present invention includes a main unit 1, on which a mixing blade 14 and a cup assembly 2 are provided, the cup assembly 2 being coaxially located below the mixing blade 14; a drive motor, including a lifting motor 4 and a stirring motor 3, the stirring motor 3 driving the mixing blade 14 to rotate, and the lifting motor 4 driving the mixing blade 14 and the cup assembly 2 to generate relative displacement of their axes; and a control system, the control system including a working button 11, a control unit for controlling the operation of the drive motor, and a detection unit for monitoring the operating current and / or speed information of the drive motor; the detection unit detects the current and / or speed information of the lifting motor 4 and the stirring motor 3 in real time, and transmits the detection information to the control unit; the control unit compares the received information with preset information and outputs control signals to the lifting motor 4 and the stirring motor 3 to adjust the speed of the lifting motor 4 and the stirring motor 3.

[0044] The stirring blade 14 includes a stirring shaft and a blade assembly 213.

[0045] Preferably, the detection unit can also detect current-related data, such as power, which can be converted from current; wherein the control unit and the storage unit are integrated on the same PCB board 16.

[0046] Furthermore, the detection unit can supplement and correct data deviations in the preset information by monitoring the operating current and / or speed of the stirring motor 3 and the lifting motor 4 under no-load conditions. The purpose of this setting is that current fluctuations caused by voltage fluctuations, long-term motor operation, or motor manufacturing tolerances may cause deviations between the preset information and the actual motor in use, resulting in the preset load speed not being in the optimal state, requiring real-time initialization and adjustment.

[0047] Furthermore, there is only one working button 11. This configuration allows for one-click operation of all recipes.

[0048] Furthermore, the working button 11 is surrounded by a progress light bar 12 corresponding to the working time on its periphery or the viewing surface. This design allows the user to understand the real-time stirring progress by referring to the progress light bar 12.

[0049] Furthermore, when the lifting motor 4 drives the cup assembly 2 to slide towards the stirring blade 14, the lifting motor 4 is fixed inside the main unit 1 via a bracket 47. The output end of the lifting motor 4 is connected to a lifting platform 42, and the cup assembly 2 is detachably fixed to the lifting platform 42. The bracket 47 is equipped with a limit switch 45 and a limit switch 46. With this configuration, the lifting platform 42 initially contacts the limit switch 46, at which point the lower end of the stirring blade 14 is not in contact with the food inside the cup assembly 2. When the lifting platform 42 contacts the limit switch 45, the lower end of the stirring blade 14 is at the bottom of the food inside the cup assembly 2, completing the cutting of the food inside the cup assembly 2. When the lifting platform 42 returns to its reset position, and when the lifting platform 42 contacts the limit switch 46, the stirring blade 14 separates from the food inside the cup assembly 2, completing the mixing of the food inside the cup assembly 2.

[0050] Among them, limit switch 45 is located at the lower end of bracket 47, and limit switch 46 is located at the upper end of bracket 47.

[0051] The stirring motor 3 is fixed inside the main unit 1 by a bracket 31, and drives the stirring blade 14 to rotate in the same position. A screw 41 is connected to the output end of the lifting motor 4, and a lifting platform 42 is threaded onto the screw 41. The lifting motor 4 drives the screw 41 and the lifting platform 42 to move in a threaded motion, causing the lifting platform 42 to slide the cup assembly 2 relative to the stirring blade 14. The cup assembly 2 is provided with a second buckle 223, and the lifting platform 42 is provided with a second slot 421. The second buckle 223 and the second slot 421 are locked in place. With the second buckle 223 and the second slot 421 locked in place, the cup assembly 2 and the lifting platform 42 can be easily assembled and disassembled. A guide shaft 43 is fixed on the bracket 47, and a guide shaft 43 is provided on the lifting platform 42. The guide cylinder 44, guide shaft 43, and guide cylinder 44 are slidably connected; the sliding connection between guide shaft 43 and guide cylinder 44 makes the lifting platform 42 more stable in lifting; there are multiple second buckles 223 and second slots 421; there are multiple guide shafts 43 and guide cylinders 44; a connecting rod 141 is slidably provided inside the stirring shaft, and a magnet 142 is fixed at the lower end of the connecting rod 141. The main unit 1 is provided with a safety switch 15 corresponding to the upper end of the connecting rod 141; by setting the magnet 142, the connection between the stirring shaft and the blade assembly 213 can be made more stable; by setting the safety switch 1, the safety switch 15 can be triggered when the stirring shaft is connected to the blade assembly 213, and when the stirring shaft is not connected to the blade assembly 213, the stirring shaft cannot rotate, making it safer to use.

[0052] The cup assembly 2 includes a detachably connected lid 21 and a freezing cup 22. The lid 21 has a snap fastener 214, and the freezing cup 22 has a slot 222. The snap fastener 214 and the slot 222 are engaged. The lid 21 has a through hole 211 for the stirring shaft to pass through, and a blade assembly 213 that can be magnetically connected to the stirring shaft is located inside the lid 21. The inner wall of the freezing cup 22 has a convex-concave structure 221. This design makes it easy to assemble and disassemble the lid 21 and the freezing cup 22 with the snap fastener 214 and the slot 222 engaged. The blade assembly 213 is magnetically connected inside the lid 21, allowing the stirring shaft to pass through the through hole 211 and be magnetically connected to the blade assembly 213. The convex-concave structure 221 on the inner wall of the freezing cup 22 prevents the food from rotating during cutting and stirring.

[0053] The cup lid 21 is provided with a second magnet 212 that can be magnetically connected to the knife assembly 213. In the initial state, the knife assembly 213 and the second magnet 212 are magnetically connected. Preferably, the knife assembly 213 is provided with a third magnet.

[0054] The convex-concave structure 221 preferably includes convex ribs or grooves; when the convex-concave structure 221 is a convex rib, the food will form a groove with the convex rib in place after solidification; when the convex-concave structure 221 is a groove, the food will form a convex rib with the groove in place after solidification.

[0055] When the blade assembly 213 is integrally fixed to the lower end of the stirring shaft, the cup lid 21 can also be removed. Example

[0056] like Figure 8 and Figure 9 As shown, when the lifting motor 4 drives the stirring blade 14 to slide towards the cup assembly 2; the cup assembly 2 is detachably fixed to the main unit 1; the lifting motor 4 is fixed inside the main unit 1 via bracket 3 5; the output end of the lifting motor 4 is connected to a lifting platform 42, and the lifting platform 42 and the stirring motor 3 are fixedly connected; the bracket 3 5 has an upper limit switch 45 and a second limit switch 46. With this configuration, the lifting platform 42 is initially in contact with the second limit switch 46, at which point the lower end of the stirring blade 14 is not in contact with the food inside the cup assembly 2; when the lifting platform 42 contacts the first limit switch 45, the stirring blade 14 is located at the bottom of the food inside the cup assembly 2, completing the cutting of the food inside the cup assembly 2; when the lifting platform 42 returns to its reset position, when the lifting platform 42 contacts the second limit switch 46, the lower end of the stirring blade 14 separates from the food inside the cup assembly 2, completing the mixing of the food inside the cup assembly 2.

[0057] Among them, limit switch 1 45 is located at the upper end of bracket 3 5, and limit switch 2 46 is located at the lower end of bracket 3 5.

[0058] The cup assembly 2 is provided with a second buckle 223, and the main unit 1 is provided with a second slot 421. The second buckle 223 and the second slot 421 are fixed in place. With the second buckle 223 and the second slot 421 fixed in place, the cup assembly 2 and the main unit 1 can be easily assembled and disassembled. The bracket 3 5 is fixed with a guide shaft 43, and the lifting platform 42 is provided with a guide cylinder 44. The guide shaft 43 and the guide cylinder 44 are slidably connected. With the guide shaft 43 and the guide cylinder 44 slidably connected, the lifting platform 42 can be lifted more stably. There are multiple second buckles 223 and second slots 421. There are multiple guide shafts 43 and guide cylinders 44.

[0059] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other modifications under the guidance of the present invention without departing from the spirit and scope of the claims. All of these modifications are within the scope of protection of the present invention.

Claims

1. A method for controlling the drive motor of an ice cream machine, the drive motor comprising a stirring motor (3) for driving the stirring blade (14) to rotate and a lifting motor (4) for driving the cup assembly (2) and the stirring blade (14) to generate relative displacement. Its features are, The control method includes the following steps: S1. Start the machine and control the stirring motor (3) and lifting motor (4) to run at the preset no-load speed. S2. When the stirring blade (14) touches the food inside the cup assembly (2), the stirring motor (3) and the lifting motor (4) generate current fluctuations. The detection unit detects the current fluctuation signal and transmits it to the control unit. After comparing and analyzing the current information with the preset current information, the control unit dynamically adjusts the stirring motor (3) and / or the lifting motor (4) to run at the preset stirring speed until the stirring blade (14) is located at the bottom of the cup assembly (2) to complete the layering and cutting of the food. S3. When the stirring blade (14) is at the bottom of the cup assembly (2), the limit switch is triggered. The limit switch outputs a positioning signal to the control unit. The control unit controls the lifting motor (4) to reverse at a preset mixing speed. The control unit also controls the stirring motor (3) to rotate at a preset mixing speed until the cup assembly (2) and the stirring blade (14) return to their initial positions, thus completing the food mixing.

2. The method for controlling the drive motor of an ice cream machine according to claim 1, characterized in that, After the control unit dynamically adjusts the stirring motor (3) and the lifting motor (4) to run at a preset stirring speed in step S2, the following steps are also included: S21. The detection unit detects the real-time stirring current of the stirring motor (3) and the real-time lifting current of the lifting motor (4) in real time. S22. The control unit compares the real-time stirring current with the preset stirring current based on the real-time stirring current and the real-time rising and falling current transmitted by the detection unit, and compares the real-time rising and falling current with the preset rising and falling current. S23. The control unit adjusts the speed of the stirring motor (3) and the lifting motor (4) in real time based on the detection current comparison information.

3. The method for controlling the drive motor of an ice cream machine according to claim 2, characterized in that, In step S23, the control unit adjusts the speeds of the stirring motor (3) and the lifting motor (4) in real time based on the detected current comparison information, including: S231. Based on the real-time stirring current and the real-time lifting current, adjust the lifting motor (4) to the preset steady-state lifting speed. S232. The speed of the stirring motor (3) is adjusted in real time by comparing the real-time stirring current with the preset stirring current until the speed of the stirring motor (3) is adjusted to the steady-state stirring speed.

4. The method for controlling the drive motor of an ice cream machine according to claim 2, characterized in that, In step S23, the control unit adjusts the speeds of the stirring motor (3) and the lifting motor (4) in real time based on the detected current comparison information, including: S233. Based on the real-time stirring current and the preset stirring current, adjust the stirring motor (3) to the preset steady-state stirring speed. S234. The speed of the lifting motor (4) is adjusted in real time by comparing the real-time lifting current with the preset lifting current until the speed of the lifting motor (4) is adjusted to a steady-state lifting speed.

5. The method for controlling the drive motor of an ice cream machine according to claim 2, characterized in that, In step S23, the control unit adjusts the speeds of the stirring motor (3) and the lifting motor (4) in real time based on the detected current comparison information, including: S235. Based on the real-time stirring current and the preset stirring current, adjust the stirring motor (3) to the preset steady-state stirring speed. S236. Based on the real-time lifting current and the preset lifting current, adjust the lifting motor (4) to the preset steady-state lifting speed; until the stirring motor (3) and the lifting motor (4) are running at the steady-state stirring speed and steady-state lifting speed respectively.

6. The method for controlling the drive motor of an ice cream machine according to claim 1, characterized in that, After the control unit controls the lifting motor (4) to reverse at a preset mixing speed in step S3, and the control unit also controls the stirring motor (3) to rotate at a preset mixing speed, the following steps are also included: S31. Based on the stirring speed of the stirring motor (3) and the lifting motor (4) in S2, adjust the mixing speed of the lifting motor (4) and the mixing speed of the stirring motor (3).

7. The method for controlling the drive motor of an ice cream machine according to claim 6, characterized in that, In step S31, if the stirring motor (3) in step S2 shows a decreasing speed trend or the lifting motor (4) shows an accelerating speed trend, then the mixing speed of the stirring motor (3) is adjusted to a low speed state and the lifting motor (4) is adjusted to a high speed state.

8. The method for controlling the drive motor of an ice cream machine according to claim 6, characterized in that, In step S31, if the stirring motor (3) in step S2 shows an accelerating trend or the lifting motor (4) shows a decelerating trend, then the mixing speed of the stirring motor (3) is adjusted to a high speed and the lifting motor (4) is adjusted to a low speed.

9. An ice cream machine, characterized in that, include: The host (1) is provided with a stirring blade (14) and a cup assembly (2), and the cup assembly (2) is coaxially located below the stirring blade (14); The drive motor includes a lifting motor (4) and a stirring motor (3), wherein the stirring motor (3) is used to drive the stirring blade (14) to rotate, and the lifting motor (4) is used to drive the stirring blade (14) and the cup assembly (2) to generate relative displacement of their axes; The control system includes a working button (11), a control unit for controlling the operation of the drive motor, and a detection unit for monitoring the operating current and / or speed information of the drive motor. The detection unit detects the current and / or speed information of the lifting motor (4) and the stirring motor (3) in real time, and transmits the detection information to the control unit. The control unit compares the received information with the preset information and outputs control signals to the lifting motor (4) and the stirring motor (3) to adjust the speed of the lifting motor (4) and the stirring motor (3).

10. An ice cream machine according to claim 9, characterized in that, There is only one working button (11).

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