Control method of ice cream machine, ice cream machine and storage medium

Abstract

The invention discloses a control method of an ice cream machine, the ice cream machine and a storage medium, and relates to the technical field of refrigerating systems. The ice cream machine at least comprises a compressor, a condenser, a throttling device and an evaporator which are sequentially connected, an outlet of the compressor is communicated with an inlet of the evaporator through an unfreezing pipeline, and an electromagnetic valve is arranged on the unfreezing pipeline; the ice cream machine further comprises a stirring motor. The control method of the ice cream machine comprises the steps that when it is detected that a barrel cover of the ice cream machine is opened in the ice cream making process, a stirring motor is controlled to stop, and a compressor is controlled to be started; after it is detected that the barrel cover of the ice cream machine is closed, the driving current of a stirring motor is obtained, and the magnitude of the driving current represents the hardening degree of the ice cream; if the driving current is larger than the preset locked-rotor current, the electromagnetic valve is controlled to be opened. The technical problem that the operation stability of the ice cream machine is reduced due to stalling of the stirring motor after the ice cream barrel cover is opened and closed is solved, and the operation stability of the ice cream machine is improved.

Description

Technical Field

[0001] This application relates to the field of refrigeration system technology, and in particular to a control method for an ice cream machine, an ice cream machine, and a storage medium. Background Technology

[0002] Currently, most ice cream machines are equipped with a lid-opening safety protection mechanism. Specifically, when the user opens the machine lid, a safety interlock command is triggered, stopping the mixing motor responsible for stirring the ice cream ingredients to prevent mechanical damage caused by the mixing components operating without protection. Simultaneously, to maintain the low-temperature environment required for ice cream making and prevent the cooled ingredients from melting and affecting the texture of the finished product, the compressor continues to operate normally, continuously providing power to the refrigeration system. When the lid is closed, the mixing motor attempts to restart to resume the stirring of the ice cream ingredients.

[0003] However, because the compressor remains running while the lid is open, the low temperature inside the ice cream machine is maintained. This causes the ice cream ingredients near the machine wall to solidify rapidly due to continuous cooling, forming a hard, solidified substance. When the mixing motor starts at this time, the mixing components come into direct contact with this hardened ice cream solid, making it highly susceptible to motor stalling. Frequent and prolonged motor stalling can lead to overheating of the motor windings and accelerated mechanical wear. This not only affects the normal lifespan of the mixing motor but may also further damage the transmission mechanism and other related components, reducing the overall operational stability of the ice cream machine. Summary of the Invention

[0004] The main objective of this application is to provide a control method for an ice cream machine, an ice cream machine, and a storage medium, aiming to solve the technical problem that the stirring motor stalls after the ice cream bucket lid is opened or closed, resulting in reduced operational stability of the ice cream machine.

[0005] To achieve the above objectives, this application proposes a control method for an ice cream machine. The ice cream machine includes at least a compressor, a condenser, a throttling device, and an evaporator connected in sequence. The outlet of the compressor and the inlet of the evaporator are connected through a defrosting pipeline, on which a solenoid valve is installed. The ice cream machine also includes a stirring motor configured to provide driving force for rotating the stirring blades. The control method for the ice cream machine includes: When the ice cream machine bucket lid is detected to be open during the ice cream making process, the stirring motor is stopped and the compressor is kept running. After the ice cream machine bucket lid is detected to be closed, the drive current of the stirring motor is obtained, where the magnitude of the drive current characterizes the degree of hardening of the ice cream; If the drive current is greater than the preset stall current, the solenoid valve will be opened.

[0006] Furthermore, to achieve the above objectives, this application also proposes an ice cream machine, which includes at least a compressor, a condenser, a throttling device, and an evaporator connected in sequence. The outlet of the compressor and the inlet of the evaporator are connected through a defrosting pipeline, on which a solenoid valve is installed. The ice cream machine also includes a stirring motor configured to provide a driving force to rotate the stirring blades. The ice cream machine further includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The computer program is configured to implement the steps of the control method for the ice cream machine described above.

[0007] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the ice cream machine control method described above.

[0008] When the ice cream machine bucket lid is detected to be open during the ice cream making process, the mixing motor is stopped and the compressor is started. The compressor's start causes the ice cream ingredients near the machine wall to solidify rapidly due to continuous cooling, forming a harder, solidified substance. After the lid is closed, the driving current of the mixing motor is measured, and its magnitude indicates the degree of ice cream hardening. If the driving current exceeds the preset stall current, it indicates a higher degree of ice cream hardening, increasing the likelihood of the mixing motor stalling. At this point, the solenoid valve is activated. After the solenoid valve opens, the high-temperature gas from the compressor directly enters the evaporator through the defrosting pipe. This high-temperature gas heats the evaporator in reverse, effectively defrosting the harder solidified substance on the ice cream machine wall. This prevents the mixing motor from stalling after the lid is closed, improving the stability of the ice cream machine's operation. Attached Figure Description

[0009] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the ice cream machine of this application; Figure 2 This is another structural schematic diagram of the ice cream machine of this application; Figure 3 This is yet another structural schematic diagram of the ice cream machine of this application; Figure 4 This is a flowchart illustrating the first embodiment of the control method for the ice cream machine of this application. Figure 5 This is a flowchart illustrating the second embodiment of the control method for an ice cream machine according to this application. Figure 6 This is a flowchart illustrating the third embodiment of the control method for an ice cream machine according to this application. Figure 7 This is a flowchart illustrating the fourth embodiment of the control method for an ice cream machine according to this application. Figure 8 This is a flowchart illustrating the fifth embodiment of the control method for an ice cream machine according to this application. Figure 9 This is a flowchart illustrating the sixth embodiment of the control method for an ice cream machine according to this application. Figure 10 This is a flowchart illustrating the seventh embodiment of the control method for an ice cream machine according to this application.

[0012] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0013] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0014] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Currently, most ice cream machines are equipped with a lid-opening safety protection mechanism. Specifically, when the user opens the machine lid, a safety interlock command is triggered, stopping the mixing motor responsible for stirring the ice cream ingredients to prevent mechanical damage caused by the mixing components operating without protection. Simultaneously, to ensure the texture of the finished ice cream, the compressor continues to operate normally, continuously providing power to the refrigeration system. When the lid is closed, the mixing motor attempts to restart to resume stirring the ice cream ingredients.

[0016] However, because the compressor remains running while the lid is open, the low temperature inside the ice cream machine is maintained. This causes the ice cream ingredients near the machine wall to solidify rapidly due to continuous cooling, forming a hard, solidified substance. When the mixing motor starts at this time, the mixing components come into direct contact with this hardened ice cream solid, easily leading to motor stalling. Frequent and prolonged motor stalling can cause overheating of the motor windings and accelerated mechanical wear. This not only affects the normal lifespan of the mixing motor but may also further damage the transmission mechanism and other related components, reducing the overall operational stability and lifespan of the ice cream machine.

[0017] To address the aforementioned problems, this application proposes a control method for an ice cream machine. The ice cream machine includes at least a compressor, a condenser, a throttling device, and an evaporator connected in sequence. The compressor outlet and the evaporator inlet are connected via a defrosting pipeline, on which a solenoid valve is installed. The ice cream machine also includes a stirring motor configured to provide driving force for rotating the stirring blades. The control method includes: when the ice cream machine bucket lid is detected to be open during the ice cream making process, controlling the stirring motor to stop and controlling the compressor to remain running; after the ice cream machine bucket lid is detected to be closed, acquiring the driving current of the stirring motor, wherein the magnitude of the driving current characterizes the degree of hardening of the ice cream; if the driving current is greater than a preset stall current, controlling the solenoid valve to open.

[0018] When the ice cream machine bucket lid is detected to be open during the ice cream making process, the mixing motor is stopped and the compressor is started. The compressor's start causes the ice cream ingredients near the machine wall to solidify rapidly due to continuous cooling, forming a harder, solidified substance. After the lid is closed, the driving current of the mixing motor is measured, and its magnitude indicates the degree of ice cream hardening. If the driving current exceeds the preset stall current, it indicates a higher degree of ice cream hardening, increasing the likelihood of the mixing motor stalling. At this point, the solenoid valve is activated. After the solenoid valve opens, the high-temperature gas from the compressor directly enters the evaporator through the defrosting pipe. This high-temperature gas heats the evaporator in reverse, effectively defrosting the harder solidified substance on the ice cream machine wall. This prevents the mixing motor from stalling after the lid is closed, improving the stability of the ice cream machine's operation.

[0019] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or an electronic device or ice cream machine capable of performing the above functions. The following description uses an ice cream machine as an example to illustrate this embodiment and the subsequent embodiments.

[0020] Reference Figure 1 This application provides an ice cream machine, which mainly consists of a refrigeration system, a stirring system and an electrical system.

[0021] The mixing system consists of a mixing motor 40, mixing blades, an ice cream bucket 20, a mixing shaft, and a sealing device. The mixing motor provides driving force, causing the mixing blades to rotate, continuously scraping off ice crystals from the ice cream bucket wall and continuously mixing. The mixing blades are fitted onto the mixing shaft, which has a sealing device inside to prevent raw material leakage.

[0022] The electrical system mainly includes a control board, a material temperature sensor, an ambient temperature sensor, a buzzer, and a display board. The material temperature sensor is used to detect the temperature of the ice cream ingredients, the ambient temperature sensor is used to detect the ambient temperature, and the buzzer is used for prompts and alarms.

[0023] The refrigeration system consists of a compressor 80, a condenser 70, a dryer filter 100, a throttling device 90, an evaporator 30, and a solenoid valve 50, connected as follows: Figure 2 As shown, the compressor outlet and evaporator inlet are connected via a defrosting line, on which a solenoid valve is installed. The compressor compresses the refrigerant into a high-temperature, high-pressure gas and delivers it to the condenser. The condenser cools the high-temperature, high-pressure gas into a high-pressure, medium-temperature liquid, releasing heat. The high-pressure liquid is throttled and depressurized through a throttling device, becoming a low-temperature, low-pressure gas-liquid mixture. The low-temperature, low-pressure refrigerant enters the evaporator for heat exchange and then returns to the compressor, completing one refrigeration cycle. Furthermore, the solenoid valve is connected between the compressor outlet and the evaporator inlet. During normal cooling, it remains closed. When the defrosting function is used, the solenoid valve opens, allowing the high-temperature gas from the compressor to directly enter the evaporator through the defrosting line. This high-temperature gas heats the evaporator in reverse, effectively defrosting the hardened solids on the ice cream machine's walls. This prevents the agitator motor from stalling after the ice cream machine lid is closed, thus improving the stability and lifespan of the ice cream machine.

[0024] The ice cream machine also includes a bucket lid 10 and a condenser fan 60.

[0025] The structure of the refrigeration system will be described below: The compressor is the core power component of the ice cream machine's refrigeration system. It is used to compress low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure refrigerant gas, providing continuous power for the entire refrigeration cycle. Its operating status can be precisely controlled by the control board, stably adapting to the continuous operation requirements of refrigeration conditions. It can remain running even in special scenarios such as when the lid is open, ensuring that the refrigeration cycle is not interrupted.

[0026] The condenser is a key component in the refrigeration system of an ice cream machine, used for condensation and heat dissipation. One end is connected to the compressor outlet, receiving the high-temperature and high-pressure refrigerant gas delivered by the compressor. Through heat exchange, the high-temperature and high-pressure gas is cooled and converted into high-pressure and medium-temperature refrigerant liquid, and the heat is dissipated to the external environment. It is usually paired with a heat dissipation structure to assist in heat dissipation and ensure the stability of the refrigeration system pressure.

[0027] A throttling device is a component in the refrigeration system of an ice cream machine used for throttling and pressure reduction. Connected between the condenser and evaporator, it throttles and reduces the pressure of the high-pressure, medium-temperature refrigerant liquid output from the condenser, converting it into a low-temperature, low-pressure gas-liquid mixture. This precisely controls the refrigerant flow rate, providing the necessary conditions for efficient heat exchange in the evaporator. It can be a capillary tube or an electronic expansion valve.

[0028] The evaporator is the core component of the ice cream refrigeration system used for heat exchange and freezing. It is usually attached to the outer layer of the ice cream tub. If a coiled copper tube structure is used, it is tightly attached to the tub wall. It receives the low-temperature, low-pressure refrigerant gas-liquid mixture delivered by the throttling device. Through heat exchange, it absorbs the heat of the ingredients in the ice cream tub, realizing the freezing and hardening of the ice cream ingredients. At the same time, it can be adapted to the introduction of high-temperature refrigerant to complete the defrosting function.

[0029] The defrosting line is a special line designed for the defrosting function of ice cream machines. It is made of high-temperature resistant and refrigerant corrosion resistant material. The two ends are connected to the compressor outlet and the evaporator inlet, respectively. The diameter of the line is matched with the refrigerant flow rate at the compressor outlet, which can accurately deliver the high-temperature and high-pressure refrigerant discharged from the compressor during defrosting, ensuring a stable and efficient defrosting process.

[0030] The solenoid valve is an electromagnetically controlled valve installed on the defrosting pipeline. It uses a sealing material compatible with the refrigerant, has good sealing performance and response speed, and is controlled to open or close by an electrical signal output from the control board. Under normal refrigeration conditions, it is in the closed state, strictly blocking the flow of high-temperature refrigerant to the evaporator. Under defrosting conditions, it is opened to open the defrosting pipeline.

[0031] The stirring motor is the power source of the ice cream machine's stirring system. A DC or AC motor that is compatible with the ice cream machine's power is selected, and the speed can be preset according to the ice cream making needs. It is used to drive the stirring shaft and stirring blade to rotate. The gap between the stirring blade and the ice cream bucket wall is controlled within a reasonable range, which can thoroughly scrape off the ice crystals that have condensed on the bucket wall and continuously stir the ingredients, preventing the ingredients from freezing too hard in some places and ensuring that the ice cream has a uniform texture.

[0032] In addition, the ice cream machine also includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the control method of the ice cream machine in the above embodiments.

[0033] The following is for reference. Figure 3The diagram illustrates a structural schematic suitable for implementing embodiments of this application of an ice cream machine. The ice cream machine may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM) 1004. The RAM 1004 also stores various programs and data required for the operation of the ice cream machine. The processing device 1001, the ROM 1002, and the RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to I / O interface 1006: input devices 1007 including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 1008 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 1003 including, for example, magnetic tapes, hard disks, etc.; and communication devices 1009. Communication device 1009 allows the ice cream machine to communicate wirelessly or wiredly with other devices to exchange data. Although an ice cream machine with various systems is shown in the figure, it should be understood that it is not required to implement or possess all the systems shown. More or fewer systems can be implemented alternatively.

[0034] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from read-only memory 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0035] The ice cream machine provided in this application, employing the control method of the ice cream machine in the above embodiments, can solve the technical problem of reduced operational stability and service life of the ice cream machine caused by the stalling of the stirring motor after the ice cream bucket lid is opened and closed. Compared with the prior art, the beneficial effects of the ice cream machine provided in this application are the same as those of the control method of the ice cream machine provided in the above embodiments, and other technical features of this ice cream machine are the same as those disclosed in the method of the previous embodiment, and will not be repeated here.

[0036] Based on the same inventive concept, this application provides a control method for an ice cream machine, referring to... Figure 4 , Figure 4 This is a flowchart illustrating the first embodiment of the control method for the ice cream machine of this application.

[0037] In this embodiment, the control method for the ice cream machine includes steps S10 to S30: Step S10: When the ice cream machine bucket lid is detected to be open during the ice cream making process, the stirring motor is stopped and the compressor is kept running. In one optional implementation, a microswitch is used as the lid detection module, fixedly installed at the contact point between the ice cream machine lid and the machine body. The microswitch is connected to the I / O interface of the control board via a dedicated wire, forming a complete detection circuit. When the user opens the lid, the lid separates from the machine body, and the microswitch contacts switch from a closed state to an open state. The change signal of the contact state is quickly transmitted to the control board via the wire. Upon receiving the disconnect signal, the control board immediately sends a low-level stop command to the drive module of the stirring motor, ensuring that the stirring motor stops running within a short time. Simultaneously, the control board sends a high-level continuous operation command to the drive module of the compressor, ensuring that the compressor remains running, continuously outputting high-temperature and high-pressure refrigerant, maintaining an uninterrupted refrigeration cycle, and ensuring that the condenser operates normally in sync, maintaining stable pressure in the refrigeration system, and preventing external heat from entering and causing the raw material temperature to rise after the lid is opened.

[0038] Another optional implementation uses an electromagnetic induction sensor as the lid detection module. A small permanent magnet is fixedly installed on the inside of the ice cream machine lid, and an induction coil is embedded at the corresponding position where the machine body and the lid fit together. The induction coil is precisely connected to the signal acquisition module of the control board to ensure stable signal transmission. When the lid is closed, the permanent magnet approaches the induction coil, and the coil generates a stable induced voltage signal under the action of the magnetic field. When the user opens the lid, the permanent magnet moves away from the induction coil along with the lid, and the amplitude of the electromagnetic induction signal of the induction coil drops rapidly. The signal processing module of the control board recognizes this amplitude change in real time and quickly outputs a stop signal for the stirring motor through internal logic circuits, controlling the stirring motor to shut down. At the same time, the control board maintains the compressor drive signal unchanged, ensuring that the compressor continues to run and the refrigeration process is not affected by the lid opening operation.

[0039] Step S20: After detecting that the ice cream machine bucket lid is closed, the drive current of the stirring motor is obtained, wherein the magnitude of the drive current characterizes the degree of hardening of the ice cream; The drive current is the operating current required to drive the stirring motor. It is collected and monitored in real time by the control board. Its value is linearly positively correlated with the hardening degree of the ice cream. That is, the harder the ice cream, the greater the resistance that the stirring motor needs to overcome when starting and running, and the higher the value of the drive current. It can be used as a core basis for judging the hardening degree of ice cream. This drive current can be obtained by processing the current data over a period of time after the lid is closed.

[0040] In one optional implementation, a high-precision current sampling resistor is connected in series in the power supply circuit of the stirring motor. The sampling resistor is connected in series with the stirring motor and drive module to ensure that all drive current during motor operation passes through the sampling resistor. When the control board detects a lid-closed signal, it immediately activates the internal analog-to-digital converter (ADC). This ADC can acquire the voltage signal across the sampling resistor in real time. The acquired analog voltage signal first passes through an RC low-pass filter circuit to effectively remove external electromagnetic interference and signal noise. Then, through the internal calculation circuit of the control board, the real-time drive current value of the stirring motor is accurately calculated according to Ohm's law I=U / R. This drive current value is positively correlated with the degree of hardening of the ice cream; the higher the current, the higher the degree of hardening and the greater the resistance to motor operation, and vice versa.

[0041] Another optional implementation uses a Hall current sensor to acquire the drive current. The power supply terminal of the Hall current sensor is connected to the power supply interface, and the signal output terminal is directly connected to the analog-to-digital converter module of the control board. When the control board detects that the lid is closed, it immediately sends a start signal to the Hall current sensor. The sensor monitors the drive current in the power supply line of the stirring motor in real time and converts the current signal into an analog voltage signal. This analog voltage signal has a linear relationship with the drive current; the higher the current, the higher the voltage. After the voltage signal is transmitted to the control board, the signal strength is optimized by an amplification circuit, and then the analog-to-digital converter module performs analog-to-digital conversion to convert the analog signal into a digital signal. The actual drive current value is then calculated by the processing unit of the control board.

[0042] The hardening degree of ice cream is characterized by the drive current of the stirring motor, eliminating the need for a dedicated hardness detection sensor. This effectively simplifies the equipment structure of the ice cream machine, reduces hardware costs and R&D difficulty, and ensures that the current acquisition process does not conflict with the normal operation of the stirring motor, thus not affecting the ice cream making process. This approach simultaneously satisfies both practicality and economy.

[0043] Step S30: If the driving current is greater than the preset stall current, control the solenoid valve to open.

[0044] The preset stall current is a current threshold value set through multiple experiments, based on the rated parameters of the ice cream machine's mixing motor and the maximum resistance during normal ice cream making. It is used to determine whether the hardening of the ice cream will cause the mixing motor to stall. The threshold setting has a certain margin of error to ensure the accuracy and reliability of the judgment. It can be set to 0.7A.

[0045] In one optional implementation, the control board's internal storage unit pre-stores a preset stall current value. The control board's processing unit calls upon the drive current data collected in the storage unit and compares it with the preset stall current value in real time. When the drive current is detected to be greater than the preset stall current threshold, the processing unit immediately sends a high-level control signal to the solenoid valve's drive circuit. The solenoid valve's coil is energized, generating a magnetic field that drives the valve core, opening the valve. At this time, the high-temperature, high-pressure refrigerant discharged from the compressor enters the evaporator through the defrosting pipeline, beginning the defrosting and softening of the ice cream.

[0046] Another optional implementation uses a comparator circuit within the control board to compare the drive current with a preset stall current. The non-inverting input of the comparator is connected to the voltage signal converted from the drive current, and the inverting input is connected to the reference voltage corresponding to the preset stall current. When the voltage signal corresponding to the drive current is greater than the reference voltage, it indicates that the drive current is greater than the preset stall current. The comparator immediately outputs a high-level trigger signal, which is quickly transmitted to the processing unit of the control board. Upon receiving the trigger signal, the processing unit immediately controls the drive circuit of the solenoid valve to conduct, energizing and opening the solenoid valve. The high-temperature, high-pressure refrigerant then enters the evaporator through the defrosting pipeline, initiating the defrosting process. If the voltage signal corresponding to the drive current is less than or equal to the reference voltage, the comparator outputs a low level, and the solenoid valve remains closed, ensuring the normal operation of the refrigeration process.

[0047] The solenoid valve is precisely controlled to open only when the drive current exceeds the preset stall current, enabling on-demand triggering of the defrosting function and avoiding ineffective defrosting operations. This ensures that the ice cream softens in time, preventing motor stall, while also preventing the ice cream from melting due to premature opening of the solenoid valve, thus balancing equipment protection, practicality, and energy efficiency.

[0048] In this embodiment, when the ice cream machine bucket lid is detected to be open during the ice cream making process, the stirring motor is stopped and the compressor is started. The compressor starts, causing the ice cream ingredients near the machine wall to solidify rapidly due to continuous cooling, forming a hardened solid. After the bucket lid is closed, the driving current of the stirring motor is measured, and its magnitude indicates the degree of ice cream hardening. If the driving current is greater than a preset stall current, it indicates a higher degree of ice cream hardening, increasing the likelihood of the stirring motor stalling. At this point, the solenoid valve is opened. After the solenoid valve opens, the high-temperature gas from the compressor directly enters the evaporator through the defrosting pipe. The high-temperature gas heats the evaporator in reverse, effectively defrosting the hardened solid on the ice cream machine wall. This prevents the stirring motor from stalling after the bucket lid is closed, improving the stability of the ice cream machine's operation.

[0049] Based on the above embodiments of this application, in the second embodiment of this application, the same or similar content as the above embodiments can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 5 The ice cream machine also includes a bucket lid detection module.

[0050] The bucket lid detection module is a dedicated component for detecting the open or closed state of the ice cream machine bucket lid. It consists of detection elements such as microswitches and electromagnetic induction sensors, signal transmission wires, and a fixed structure, and can stably output detection signals corresponding to the bucket lid state.

[0051] Specifically, prior to step S10, the control method for the ice cream machine also includes steps S11 and S12: Step S11: Obtain the lid detection signal from the lid detection module, wherein the lid detection signal includes an electromagnetic signal and / or an electrical signal; The lid detection signal is an electrical or electromagnetic signal output by the lid detection module based on the actual state of the ice cream machine lid, such as whether it is open or closed. It accurately characterizes the current state of the lid, ensuring stable amplitude, frequency, and other parameters that can be accurately identified by the control board's signal processing module. It is free from noise interference, guaranteeing the accuracy of lid status judgment. It can include electromagnetic and / or electrical signals.

[0052] Electromagnetic signals are electrical signals generated by electromagnetic induction sensors through electromagnetic induction, electromagnetic coupling, and other methods. Their parameters, such as frequency, amplitude, and phase, change with the state of the lid.

[0053] Electrical signals are electrical physical quantity signals output by microswitches to characterize the state of the lid. They include voltage signals, current signals, resistance signals, etc., and can be divided into analog signals such as continuously changing signals and switching signals such as high / low levels. The presence, magnitude, or state change of the signal accurately reflects the state of the lid.

[0054] In one optional implementation, if the lid detection module is an electromagnetic induction sensor, the module consists of a permanent magnet fixed to the lid side and an induction coil fixed to the body side. The induction coil is connected to the signal acquisition interface of the control board. The signal acquisition module of the control board is always in standby mode, receiving electromagnetic signals generated by the lid detection module in real time. Since opening or closing the lid causes changes in the magnetic circuit, the frequency of the electromagnetic signal changes significantly. For example, when the lid is closed, the magnetic circuit is closed, and the electromagnetic signal frequency is 5kHz; when the lid is open, the magnetic circuit is open, and the frequency drops below 2kHz. The control board processes the received electromagnetic signal, for example, by using an LC filter circuit to remove external noise interference and an amplification circuit to optimize the signal amplitude, stabilizing the signal amplitude for subsequent signal identification and comparison by the control board, ensuring that the acquired electromagnetic signal is accurate and usable.

[0055] In another optional implementation, if the lid detection module is a microswitch, its output lid detection signal is a switching electrical signal. The common terminal of the microswitch is connected to the power supply interface of the control board, and the normally closed terminal is connected to the I / O interface of the control board, forming a complete detection loop. The control board reads this switching electrical signal in real time through the I / O interface, using a level detection method, and sets high-level and low-level thresholds to distinguish between valid and invalid signals. When the lid is open, the contacts of the microswitch are open, the detection loop is broken, and the control board I / O interface detects a low-level signal; when the lid is closed, the contacts of the microswitch are closed, the detection loop is connected, the control board I / O interface detects a high-level signal, and the control board reads and records this level signal in real time, completing the acquisition of the lid detection signal.

[0056] Step S12: Determine whether the ice cream machine bucket lid is open based on the bucket lid detection signal.

[0057] In one optional implementation, the lid detection signal is an electromagnetic signal. For the electromagnetic signal, the storage unit inside the control board pre-stores the standard electromagnetic signal frequency range corresponding to the lid's open and closed states, and also pre-stores a signal amplitude threshold to exclude invalid signals. The signal processing unit of the control board compares the pre-processed electromagnetic signal frequency with the pre-stored standard frequency range one by one, and simultaneously determines whether the signal amplitude meets the preset threshold requirement. If the acquired electromagnetic signal frequency is within the standard range corresponding to the open state, and the signal amplitude is greater than or equal to the pre-stored signal amplitude threshold, the lid is determined to be in the open state. If the frequency is within the standard range corresponding to the closed state, and the amplitude is stable, the lid is determined to be in the closed state. If the signal amplitude is less than the pre-stored signal amplitude threshold, it is determined to be an invalid signal, and the control board immediately triggers a command to re-acquire the signal to avoid misjudgments caused by invalid signals.

[0058] In another optional implementation, the lid detection signal is an electrical signal. For electrical signals, corresponding judgment criteria are set according to the specific type of the signal to ensure accurate judgment. If it is a voltage-type electrical signal, the control board pre-stores voltage thresholds corresponding to the lid's open state and the closed state. The control board compares the acquired voltage signal with these two thresholds in real time. When the acquired voltage signal is lower than the open threshold, the lid is determined to be open; when the voltage signal is higher than the closed threshold, the lid is determined to be closed; if the voltage signal is between the open and closed thresholds, it is considered an abnormal signal, and the control board issues a signal calibration command to re-acquire the signal. If it is a resistive electrical signal, the control board determines the lid state by detecting changes in the resistance value of the detection circuit. A preset resistance threshold corresponding to the open state is pre-stored. When the control board detects a circuit resistance value greater than the preset resistance threshold, the lid is determined to be open; when the resistance value is less than or equal to the preset resistance threshold, the lid is determined to be closed.

[0059] Step S10: When the ice cream machine bucket lid is detected to be open during the ice cream making process, the stirring motor is stopped and the compressor is kept running. Step S20: After detecting that the ice cream machine bucket lid is closed, the drive current of the stirring motor is obtained, wherein the magnitude of the drive current characterizes the degree of hardening of the ice cream; Step S30: If the driving current is greater than the preset stall current, control the solenoid valve to open.

[0060] In this embodiment, by adapting to two different types of detection signals and corresponding bucket lid detection modules with different structures, the solution can be flexibly selected according to the needs of the ice cream machine, eliminating the need for a separately designed dedicated signal acquisition circuit. This effectively improves the applicability and compatibility of the solution and reduces R&D and production costs. Furthermore, by establishing corresponding judgment criteria for different types of detection signals and adapting to different types of bucket lid detection modules, the compatibility and versatility of the solution are further enhanced.

[0061] Furthermore, determining whether the ice cream machine bucket lid is open based on the lid detection signal includes: if the lid detection signal is a preset lid detection signal, then the ice cream machine bucket lid is open. Specifically, if the electromagnetic signal is a preset electromagnetic signal and / or the electrical signal is a preset electrical signal, then the ice cream machine bucket lid is open.

[0062] The preset electromagnetic signal refers to the standard parameters of the electromagnetic signal that are set in advance through multiple experiments and are uniquely corresponding to the open state of the ice cream machine bucket lid. These parameters include the frequency, amplitude, phase and other characteristic parameters of the signal. These characteristic parameters can be stored in the storage unit of the control board for easy retrieval, modification and calibration to adapt to the needs of different models.

[0063] Preset electrical signals refer to standard electrical signal parameters that are pre-calibrated through multiple experiments and uniquely correspond to the open state of the ice cream machine bucket lid. Depending on the specific type of electrical signal, they are divided into various types, such as preset voltage value, preset current value, preset resistance value, or preset switch state.

[0064] In one optional implementation, for electromagnetic signals, the control board first performs comprehensive preprocessing on the acquired raw electromagnetic signals. First, an RC low-pass filter circuit removes external electromagnetic noise and signal interference. Then, a signal amplification circuit amplifies the signal amplitude. Subsequently, a phase detection circuit extracts the phase characteristics of the amplified signal to ensure the completeness and accuracy of the acquired electromagnetic signal parameters. After preprocessing, the control board's signal processing unit extracts three core characteristic parameters of the electromagnetic signal: frequency, amplitude, and phase. These are then precisely compared one by one with the corresponding parameters of the preset electromagnetic signals stored in the control board's storage unit. If the frequency and amplitude of the acquired electromagnetic signal both fall within the parameter range of the preset electromagnetic signals, and the phase deviation meets the requirements, the electromagnetic signal is determined to be the preset electromagnetic signal. The control board immediately determines that the ice cream machine bucket lid is open and sends a lid-opening judgment signal to the control board's processing core, triggering subsequent control actions such as stopping the stirring motor.

[0065] Another optional implementation involves performing targeted comparisons and judgments based on the specific type of electrical signal, such as a switching signal or an analog signal, to ensure accurate judgment. For switching signals, such as those output by a microswitch, the preset signal level is set to low. The control board monitors the signal level output by the lid detection module in real time via the I / O interface. When a low-level output signal is detected and its duration is greater than or equal to a certain period, the signal is determined to be the preset signal, and the lid is immediately opened. For analog signals, such as voltage signals, the preset signal level is set to be less than or equal to a preset voltage value. The control board converts the acquired voltage signal using an analog-to-digital converter and compares it precisely with the preset voltage value. When the acquired voltage signal is less than or equal to the preset voltage, it is determined to be the preset signal, and the lid is opened. For resistive signals, the control board compares the resistance value of the detection circuit with the preset resistance value. If the values ​​match, the signal is determined to be the preset signal, and the lid is opened.

[0066] In this embodiment, the judgment result can be obtained by comparing the signal characteristics with the preset parameters one by one, which effectively reduces the computational load of the control board, ensures rapid judgment response, provides timely support for subsequent control actions such as stopping the stirring motor, and avoids safety hazards or equipment failures caused by judgment delays.

[0067] Based on the above embodiments of this application, in the third embodiment of this application, the same or similar content as the above embodiments can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 6 Before obtaining the lid detection signal from the lid detection module in step S11, steps S13 and S14 are also included: Step S13: During the ice cream making process, obtain the temperature of the materials in the ice cream machine; Material temperature refers to the real-time temperature of the ice cream ingredients in the ice cream machine, that is, the actual temperature of the ingredients in the ice cream bucket. Its changes directly reflect the freezing or hardening progress of the ice cream. It is collected in real time by temperature sensors during the ice cream making process.

[0068] In one optional implementation, a thermistor is used as the material temperature sensor, which can accurately capture subtle changes in material temperature. The thermistor is fixedly mounted on the side wall inside the ice cream tub, with the sensor probe in direct contact with the ice cream ingredients to ensure the collected temperature is the actual temperature of the ingredients. The sensor's two pins are connected to the signal acquisition interface of the control board, forming a complete temperature detection loop with the voltage divider circuit inside the control board. The control board provides a stable power supply to the sensor. The thermistor's resistance changes linearly with the material temperature. The control board acquires the voltage signal of the thermistor's loop through an analog-to-digital converter module. After filtering, the acquired voltage signal is combined with the thermistor's resistance and temperature characteristic curve, and the real-time temperature of the material is accurately calculated by the arithmetic circuit.

[0069] Another optional implementation uses a digital temperature sensor to meet the temperature acquisition requirements of the ingredients during ice cream making. The sensor probe is fixed to the inner wall of the ice cream tub. The sensor connects to the control board's I / O interface via a single bus. The control board sends a temperature acquisition command to the sensor. Upon receiving the command, the sensor acquires the ingredient temperature in real time and converts it into a digital signal, directly transmitting it to the control board without additional analog-to-digital conversion. The control board reads this digital signal in real time, analyzes it to obtain the real-time temperature value of the ingredients, stores it in the storage unit, and simultaneously determines whether the temperature is within the normal production range. If it exceeds the range, an abnormality warning is issued.

[0070] Step S14: If the material temperature is less than or equal to the preset temperature, generate an opening command for the ice cream machine bucket lid, wherein the opening command is used to open or prompt the opening of the ice cream machine bucket lid.

[0071] The preset temperature refers to a temperature threshold set through multiple experiments, based on the different requirements of ice cream making processes, such as soft-serve and hard-serve ice cream. When the material temperature reaches this temperature, it indicates that the ice cream ingredients are ready to be added after opening the lid. This ensures that the ingredients will not melt or separate due to excessive heat, nor will they become too hard and difficult to stir due to excessive cold. This preset temperature can be set to -2℃.

[0072] The opening command is a signal generated by the control board based on the comparison between the material temperature and the preset temperature. It is used to instruct the user to open the ice cream machine bucket lid or to prompt the user to open the bucket lid. There are two types of signals: one is a control signal, which can directly open the bucket lid through mechanical control; the other is a prompt signal, which can be output through a buzzer, display board, indicator light, etc., to prompt the user to manually open the bucket lid.

[0073] In one optional implementation, the control board's internal storage unit pre-stores a preset temperature value. The control board's processing unit calls upon the material temperature data collected in the storage unit and compares it with the preset temperature value in real time, with the comparison frequency consistent with the material temperature acquisition frequency. When the detected material temperature is less than or equal to the preset temperature value, and this state lasts for a period of time or longer, it indicates that the raw material has reached a suitable state for opening the lid and adding ingredients. The control board immediately generates an opening prompt command. The control board sends a drive signal to the buzzer, which sounds an audible prompt. Simultaneously, the control display board displays a text prompt indicating that the lid can be opened for adding ingredients. If the ice cream machine has an indicator light, the indicator light flashes synchronously. Through various means, the opening prompt command is output to the user, prompting the user to manually open the lid and add ingredients.

[0074] In another optional implementation, if the ice cream machine supports an automatic lid-opening function, the control board has a preset temperature value stored inside. It compares the material temperature with the preset temperature in real time. When the material temperature reaches the preset temperature and the duration is greater than or equal to a certain period, the control board generates an automatic opening command and sends a control signal to the lid's drive motor. The drive motor is powered on and runs, unlocking the lid's locking mechanism. After unlocking, the drive motor continues to run for a period of time, causing the lid to automatically pop open, directly completing the lid opening operation without user intervention. Simultaneously, the control board controls a buzzer to sound an alert, informing the user that the lid has opened, facilitating timely addition of ingredients and completing the generation and execution of the opening command.

[0075] Step S11: Obtain the lid detection signal from the lid detection module, wherein the lid detection signal includes an electromagnetic signal and / or an electrical signal; Step S12: Determine whether the ice cream machine bucket lid is open based on the bucket lid detection signal.

[0076] Step S10: When the ice cream machine bucket lid is detected to be open during the ice cream making process, the stirring motor is stopped and the compressor is kept running. Step S20: After detecting that the ice cream machine bucket lid is closed, the drive current of the stirring motor is obtained, wherein the magnitude of the drive current characterizes the degree of hardening of the ice cream; Step S30: If the driving current is greater than the preset stall current, control the solenoid valve to open.

[0077] In this embodiment, the comparison between the material temperature and the preset temperature is accurate, effectively avoiding false commands caused by instantaneous temperature fluctuations. This ensures that the timing of the activation command is accurate and meets the requirements of the ice cream making process. The command is not generated too early, causing the raw materials to melt, nor is it generated too late, causing the raw materials to become too hard.

[0078] In other embodiments, when the temperature sensor detects that the temperature of the ingredients in the ice cream machine has dropped to a first preset temperature, if the user has not opened the lid during this period, a countdown for adding ingredients is triggered for a certain duration. After the countdown ends, the addition reminder ends. The first preset temperature can be set to -4.5℃, and the countdown duration can be set to 30 seconds.

[0079] Based on the above embodiments of this application, in the fourth embodiment of this application, the same or similar content as the above embodiments can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 7 Following step S130, the control method for the ice cream machine further includes steps S11 and S12: Step S10: When the ice cream machine bucket lid is detected to be open during the ice cream making process, the stirring motor is stopped and the compressor is kept running. Step S20: After detecting that the ice cream machine bucket lid is closed, the drive current of the stirring motor is obtained, wherein the magnitude of the drive current characterizes the degree of hardening of the ice cream; Step S30: If the driving current is greater than the preset stall current, control the solenoid valve to open; Step S40: During the first preset time period after the solenoid valve is opened, the drive current of the stirring motor is acquired at regular intervals. The first preset duration refers to the maximum duration for the defrosting operation after the solenoid valve is opened. It is set through multiple experiments and calibrations. The setting is based on factors including the ice cream machine's cooling power, defrosting efficiency, and the maximum hardening degree of the ice cream. It is specifically designed to strictly limit the defrosting time to prevent the ice cream from melting and deteriorating in taste due to over-defrosting. The duration parameter is stored in the control board and can be flexibly adjusted according to actual needs.

[0080] In one optional implementation, a high-precision timer is installed inside the control board. When the control board sends an opening signal to the solenoid valve, and the solenoid valve successfully opens, the timer immediately starts counting. The timing value is transmitted to the processing unit of the control board in real time, and the opening time of the solenoid valve is simultaneously recorded in the storage unit. The control board triggers a current detection program at preset time intervals. After each detection program is started, the drive current signal of the stirring motor is collected through a current sampling resistor connected in series in the power supply circuit of the stirring motor. After the collected voltage signal is filtered and converted from analog to digital, the drive current value is accurately calculated according to Ohm's law. After each acquisition, the current value, acquisition time, and timer timing value are bound and stored in the storage unit, and the timing status is updated to ensure that the drive current is collected at regular intervals within a first preset time period. If an invalid current signal is collected, the control board immediately triggers a re-acquisition command to ensure that the collected drive current data is accurate and valid.

[0081] Another optional implementation uses a timed interrupt method to periodically collect the drive current. When the solenoid valve opens, the control board immediately starts the timed interrupt program. The interrupt program has a higher priority than other non-core programs to ensure timely triggering and avoid interference from other programs. Each time an interrupt occurs, the control board immediately controls the Hall current sensor to start, which detects the motor's drive current in real time and converts the current signal into a voltage signal. After amplification and filtering, the voltage signal is transmitted to the control board's analog-to-digital conversion module for analog-to-digital conversion, converting it into a digital signal to calculate the actual drive current value. The control board stores the collected drive current value and the number of interrupts in the storage unit. At the same time, it uses the number of interrupts to determine whether a first preset time period has been reached, ensuring that the drive current is collected at regular intervals within the first preset time period. After the collection is completed, the interrupt program ends, waiting for the next interrupt trigger.

[0082] Step S50: If the drive current obtained each time within the first preset time period is greater than the preset stall current, control the compressor to stop and output alarm information.

[0083] Alarm information refers to the prompt signal generated by the control board after it determines that the equipment is abnormal, that is, the stirring motor cannot start. It is used to notify the user that the ice cream machine is malfunctioning. The signal can take various forms, such as continuous alarm by a buzzer, display of fault code on the display board, constant illumination of indicator lights, etc., or it can push alarm information to the user terminal through the wireless communication module to ensure that the user can be informed of the abnormality of the equipment in a timely manner.

[0084] In one optional implementation, the control board internally stores a first preset duration and a preset stall current value. When the timer reaches the first preset duration, the timing module sends a timing end signal to the processing unit of the control board. The processing unit immediately retrieves all drive current data recorded in the storage unit and compares them precisely with the preset stall current value. If all collected drive current data are greater than the preset stall current value, it indicates that the ice cream has not softened after the longest defrosting time, and the stirring motor still cannot start. The processing unit immediately sends a low-level stop command to the compressor drive module to ensure that the compressor stops running. At the same time, it cuts off the power supply to the condenser cooling fan, causing the cooling fan to stop working synchronously, and the refrigeration cycle is completely interrupted. Subsequently, the control board sends a drive signal to the buzzer, and the buzzer emits a continuous alarm sound to continuously alert the user that the equipment is malfunctioning.

[0085] In another optional implementation, the control board uses a real-time comparison method. Each time drive current data is collected, it is immediately compared with a preset stall current value, and the comparison result is recorded. If, within a first preset time period, no comparison result shows a drive current less than or equal to the preset stall current, it indicates that the ice cream has not softened and the stirring motor cannot start. The control board immediately sends a shutdown signal to the compressor's drive circuit, stopping the compressor; simultaneously, it cuts off the power supply to the solenoid valve, closing it and stopping the defrosting operation. Subsequently, the control board displays a fault code on the control display panel and pushes an alarm message to the user terminal via the wireless communication module, indicating that the stirring motor cannot start and requesting a check of the ice cream's hardening. Simultaneously, an intermittent alarm is activated, providing multiple channels to alert the user to the fault and facilitate timely handling.

[0086] In this embodiment, if the driving current obtained each time within the first preset time period is greater than the preset stall current, it indicates that the ice cream has a high hardness and the stirring motor has a high risk of stalling. By controlling the compressor to stop, the compressor and solenoid valve are prevented from running ineffectively for a long time, which effectively reduces energy waste. At the same time, it prevents the compressor from being damaged due to long-term no-load or high-pressure operation, extends the service life of the compressor and solenoid valve, and reduces equipment maintenance costs.

[0087] Based on the above embodiments of this application, in the fifth embodiment of this application, the same or similar content as the above embodiments can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 8 After step S30, steps S110 to S130 are also included: Step S10: When the ice cream machine bucket lid is detected to be open during the ice cream making process, the stirring motor is stopped and the compressor is kept running. Step S20: After detecting that the ice cream machine bucket lid is closed, the drive current of the stirring motor is obtained, wherein the magnitude of the drive current characterizes the degree of hardening of the ice cream; Step S30: If the driving current is greater than the preset stall current, control the solenoid valve to open; Step S110: If the driving current is less than or equal to the preset stall current, control the stirring motor to start and the solenoid valve to close. In one optional implementation, the control board's processing unit retrieves the stirring motor drive current data collected in the storage unit in real time and compares it with a pre-stored preset stall current value. The comparison frequency is consistent with the current acquisition frequency. When the detected drive current is less than or equal to the preset stall current value, and this state lasts for a period of time or longer, it indicates that the ice cream has softened to a state suitable for starting the stirring motor. The processing unit immediately sends a high-level start signal to the stirring motor's drive module to ensure a smooth start. The stirring motor operates at a preset speed, driving the stirring shaft and stirring blades to rotate and continue stirring the ice cream ingredients. Simultaneously, the control board sends a low-level control signal to the solenoid valve. The solenoid valve's coil is de-energized, the magnetic field disappears, the valve core resets under the spring force, the valve closes, and the high-temperature refrigerant delivery channel is cut off, preventing the ice cream from melting due to continuous heating.

[0088] Step S120: After the ice cream is made, control the solenoid valve to open; In one optional implementation, the ice cream machine's control board uses dual signals to determine whether the ice cream is ready, ensuring accurate judgment. The first signal is the operating status of the stirring motor: when the stirring motor stops running after a preset time, and the drive current stabilizes at a preset value after stopping, it indicates that the motor is unloaded and the raw materials have reached the required hardness. The second signal is the temperature signal from the material temperature sensor: when the material temperature sensor detects that the material temperature has stabilized at the normal temperature after ice cream preparation, the control board determines that the ice cream is ready. After the determination, the control board immediately sends a high-level opening signal to the solenoid valve. The solenoid valve's coil is energized, the valve core actuates, and the valve opens. The high-temperature, high-pressure refrigerant discharged from the compressor enters the evaporator through the defrosting pipe, beginning to defrost and soften the ice cream at the bottom of the container, facilitating subsequent dispensing.

[0089] Another optional implementation involves installing a completion trigger button on the ice cream machine's control panel. This button is connected to the control board's I / O interface for easy manual triggering by the user. After observing that the ice cream has finished making, the user presses the trigger button. Upon receiving the trigger signal, the control board uses a material temperature sensor to collect the material temperature for further analysis. If the material temperature is within the normal range for ice cream preparation, the control board immediately sends an opening signal to the solenoid valve, energizing it and initiating the defrosting process.

[0090] In step S130, after the second preset time, the control solenoid valve is closed and the compressor is stopped.

[0091] The second preset duration refers to the fixed time for the defrosting operation after the solenoid valve opens. This duration is calibrated and set through multiple experiments based on the ice cream's hardening level, defrosting efficiency, and the ice cream machine's cooling power. After the second preset defrosting time, the solenoid valve closes and the compressor stops to save energy.

[0092] In this embodiment, the stirring motor and solenoid valve are linked for control. The motor starts synchronously and the solenoid valve closes simultaneously. This ensures that stirring resumes promptly after the ice cream softens, resulting in a uniform texture and preventing areas from becoming uncooked or over-softened. It also prevents continuous heating due to the solenoid valve not closing in time, thus avoiding melting and ensuring the quality of the ice cream. After the ice cream is made, the solenoid valve opens to defrost it; after a second preset time, the solenoid valve closes and the compressor stops, achieving energy savings.

[0093] Furthermore, step S120, after the ice cream is made, involves controlling the solenoid valve to open, including: Step S121: When the ice cream machine is set to hardening mode, control the stirring motor to stop and the compressor to start to enter hardening mode; after the ice cream hardening is detected, control the solenoid valve to open. Hardening mode is a preset post-processing mode of the ice cream machine, which is specifically designed to further enhance the hardening degree of ice cream after it has been made, making the ice cream texture firmer and the taste more delicate, to meet the user's demand for hard ice cream. This mode can be manually turned on or off through the ice cream machine's control panel. When turned on, the equipment will automatically execute specific operating logic until the hardening process is over.

[0094] Ice cream hardening ends when the ice cream reaches the preset hardening standard in hardening mode. At this time, the hardness and temperature of the ice cream meet the preset requirements. The judgment is based on the material temperature collected by the material temperature sensor being stable at the standard temperature of hard ice cream, and the duration of this temperature state is greater than or equal to a certain period of time, or the preset hardening time is reached. The two judgment methods can be selected or used in combination to ensure accurate judgment of hardening end.

[0095] In one optional implementation, after the control board confirms that the ice cream has been made, it detects the hardening mode trigger signal on the operation panel. If this signal is detected, it determines that the ice cream machine is in hardening mode and immediately sends a low-level stop command to the stirring motor to ensure that the stirring motor stops running, preventing the ice cream from becoming loose due to stirring during the hardening process. Simultaneously, it sends a high-level start command to the compressor. If the compressor has already stopped, it starts immediately; otherwise, it remains running. The compressor continuously outputs high-temperature, high-pressure refrigerant, which, after condensation in the condenser and throttling by the throttling device, enters the evaporator. Through heat exchange, it continuously absorbs heat from the ice cream bucket, entering the hardening mode. The control board collects the temperature signal from the material temperature sensor in real time and pre-stores the temperature standard for the end of hardening. When the material temperature is detected to drop to this range, it determines that the ice cream hardening is complete and immediately sends a high-level open signal to the solenoid valve. The solenoid valve is energized and opens, allowing the high-temperature refrigerant to enter the evaporator through the defrosting pipe, softening the ice cream at the bucket wall for easier subsequent removal.

[0096] In another optional implementation, after the ice cream is made, the control board determines whether to enter the hardening mode based on a preset hardening time. If so, it immediately stops the stirring motor, cuts off its power supply, and simultaneously starts the compressor to enter hardening mode. The compressor runs continuously, and the condenser works synchronously to ensure stable refrigeration and continuously reduce the ice cream temperature. Once in hardening mode, timing begins immediately, recording the hardening time in real time. When the preset time is reached and the temperature collected by the material temperature sensor is lower than the preset temperature, the control board determines that hardening is complete, immediately opens the solenoid valve to initiate the defrosting operation, and simultaneously stops the timer, recording the hardening end time.

[0097] Alternatively, in step S122, if the ice cream machine is not set to hardening mode, control the stirring motor to stop, the compressor to start, and the solenoid valve to open.

[0098] "Hardening mode not set" means that the user has not activated the hardening mode through the control panel, or the ice cream machine does not enable the hardening mode by default. In this case, after the ice cream is made, there is no need to further increase the hardening degree. The machine can be stopped and defrosted directly. This meets the user's demand for soft ice cream, simplifies the operation process, and shortens the overall production time.

[0099] In one optional implementation, after the ice cream is made, the control board checks the hardening mode status on the operation panel. If no hardening mode trigger signal is detected, it is determined that the hardening mode is not set. The control board immediately sends a stop command to the stirring motor, causing the stirring motor to stop running and avoid ineffective stirring; at the same time, it sends a start command to the compressor; the control board sends an open signal to the solenoid valve, which is energized and opens, allowing high-temperature refrigerant to enter the evaporator through the defrosting pipe, softening the ice cream on the bucket wall. The softening time is controlled by a second preset time to ensure the softening effect. Meanwhile, the compressor continues to run to maintain the refrigeration cycle and prevent the ice cream from melting completely.

[0100] In another optional implementation, if the ice cream machine does not enable the hardening mode by default, after the ice cream is made, the control board automatically determines that the hardening mode is not set, and simultaneously cuts off the power supply to the stirring motor, controlling the motor to stop, so as to avoid energy waste and component wear caused by the motor running under no-load. The compressor is started and runs at its rated speed to ensure the stability of the refrigeration system and prevent the ice cream from melting due to external heat. The solenoid valve is opened to start the defrosting operation, and the high-temperature refrigerant enters the evaporator to quickly soften the ice cream stuck to the bucket wall, making it convenient for users to quickly take out the ice cream.

[0101] In this embodiment, scenarios with and without a hardening mode are adapted respectively. During the hardening process, the stirring motor is stopped while the compressor continues to start. This avoids the ice cream from becoming loose due to stirring, and the stable refrigeration cycle continuously lowers the ice cream temperature, increasing the degree of hardening. This makes the ice cream firm and smooth, meeting the user's demand for hard ice cream.

[0102] Based on the above embodiments of this application, in the sixth embodiment of this application, the same or similar content as the above embodiments can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 9 Following step S130, steps S140 and S150 are also included: Step S10: When the ice cream machine bucket lid is detected to be open during the ice cream making process, the stirring motor is stopped and the compressor is kept running. Step S20: After detecting that the ice cream machine bucket lid is closed, the drive current of the stirring motor is obtained, wherein the magnitude of the drive current characterizes the degree of hardening of the ice cream; Step S30: If the driving current is greater than the preset stall current, control the solenoid valve to open; Step S110: If the driving current is less than or equal to the preset stall current, control the stirring motor to start and the solenoid valve to close. Step S120: After the ice cream is made, control the solenoid valve to open; In step S130, after the second preset time, the control solenoid valve is closed and the compressor is stopped.

[0103] Step S140: During the ice cream machine's cold preservation process, obtain the current duration since the last compressor shutdown; The cold preservation process refers to a constant temperature preservation mode that the ice cream machine enters after the ice cream is made, the solenoid valve is closed, and the compressor stops. This mode is used to maintain the temperature and texture of the ice cream and prevent it from melting due to excessively high temperatures or hardening due to excessively low temperatures.

[0104] The current duration since the last compressor stop refers to the time interval recorded in real time by the control board during the cold preservation process, from the moment the compressor last stopped running to the current moment. This time interval is kept in real time by the timer built into the control board, and can be updated and stored in real time as a basis for determining whether the compressor and solenoid valve need to be restarted.

[0105] In one optional implementation, after the ice cream machine enters the cooling process, the control board immediately starts its built-in high-precision timer. The timer's start time is set to the last time the compressor stopped, and it counts in real time, transmitting the count value to the control board's processing unit. The control board's processing unit reads the timer's count value periodically, using it as the current duration since the last compressor stop, and performs a preliminary comparison with a pre-stored fourth preset duration to determine if it is close to a threshold. If the timer malfunctions, the control board immediately restarts the timer, re-starting from the last compressor stop time, and records the abnormality to ensure accurate acquisition of the duration.

[0106] In another optional implementation, the control board stores the shutdown time in the storage unit each time the compressor stops, forming a shutdown time record. After entering the cold preservation process, the control board obtains the current system time in real time and calculates the duration since the last compressor shutdown using the time difference. The duration is recalculated periodically.

[0107] Step S150: If the duration exceeds the fourth preset duration, control the compressor to start and the solenoid valve to open.

[0108] The fourth preset duration refers to the maximum interval between compressor shutdowns during the pre-set cold preservation process. This setting is calibrated through multiple experiments and is based on factors including the cold preservation performance of the ice cream machine, the ambient temperature, and the cold preservation requirements of the ice cream. It is used to determine whether the temperature of the ice cream is too high during the cold preservation process. If this duration is exceeded, it indicates that the temperature of the ice cream may be outside the cold preservation range, and the compressor needs to be restarted for cooling and the solenoid valve needs to be restarted for defrosting.

[0109] In one optional implementation, the control board internally stores a fourth preset duration, and the processing unit precisely compares the acquired duration with the fourth preset duration in real time. When the detected duration exceeds the preset duration, it indicates that the ice cream temperature may have exceeded the preset cooling range during the cooling process, posing a risk of melting. The control board immediately sends a high-level start signal to the compressor, starting it using a soft-start method. After the compressor starts, the condenser and throttling device work synchronously, and the refrigeration cycle begins, continuously absorbing heat from the ice cream bucket to lower the ice cream temperature. Simultaneously, the control board sends a high-level opening signal to the solenoid valve, energizing and opening it. High-temperature refrigerant enters the evaporator through the defrosting pipeline, helping to soften the ice cream that may have hardened excessively at the bucket wall and balancing the evaporator temperature through heat exchange, preventing equipment malfunction due to excessively low evaporator temperature after the compressor starts. The control board monitors the compressor's operating status and the temperature signal from the material temperature sensor in real time. When the material temperature drops to the set temperature, it controls the compressor to stop, the solenoid valve to close, and the timing to restart, entering the next cooling cycle.

[0110] In another optional implementation, the control board automatically adjusts the fourth preset duration based on the ambient temperature. When the duration exceeds the adjusted fourth preset duration, the control board immediately starts the compressor and solenoid valve. The compressor runs at its rated speed, and the solenoid valve remains open. Simultaneously, the control board's processing unit collects the temperature signal from the material temperature sensor and the compressor's operating current signal in real time. If an abnormal compressor operating current is detected, the power supply to the compressor is immediately cut off, operation stops, and an alarm is issued. If the material temperature is detected to have dropped to the cold-keeping range, the compressor is stopped, the solenoid valve is closed, the timer is restarted, and the duration is recalculated to ensure stable cold-keeping effect.

[0111] In this embodiment, the comparison between the duration and the fourth preset duration is accurate, which can promptly determine whether the temperature of the ice cream exceeds the cold preservation range. This avoids the ice cream from melting due to excessively long cold preservation time or excessively high temperature, or from excessively hardening due to excessively low temperature, ensuring that the ice cream maintains a good texture and taste throughout the cold preservation process.

[0112] Based on the above embodiments of this application, in the seventh embodiment of this application, the same or similar content as the above embodiments can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 10 The ice cream machine of this application also includes a condenser fan corresponding to the condenser.

[0113] A condenser fan is a heat dissipation component that is installed corresponding to the condenser. It is usually an axial fan or a centrifugal fan, which is fixedly installed on one side or the outside of the condenser and closely fits the condenser. It is driven by a miniature DC motor, and the speed can be adjusted according to the heat dissipation requirements. Its function is to reduce the speed, thereby increasing the condenser temperature and reducing the cooling efficiency, so as to avoid the evaporator from overcooling and causing the ice cream on the wall to become too hard.

[0114] Specifically, the control method for the ice cream machine of this application also includes: Step S210: When the ice cream machine bucket lid is detected to be open during the ice cream making process, the stirring motor is stopped, the compressor is kept running, and the condenser fan speed is reduced. Reducing the speed refers to the control board adjusting the power supply voltage or pulse width of the condenser fan drive motor to reduce the speed of the condenser fan from the normal operating speed to a preset low speed when the ice cream machine bucket lid is open, the stirring motor is stopped, and the compressor is running. This increases the condenser temperature, reduces the cooling efficiency, and prevents the evaporator from overcooling, which would cause the ice cream on the wall to become too hard. This also prevents the problem of the motor stalling when the bucket lid is closed.

[0115] In one optional implementation, a microswitch is used as the lid detection element, fixedly installed at the contact point between the lid and the machine body, and connected to the I / O interface of the control board. During the ice cream making process, the control board monitors the contact state of the microswitch in real time. When the user opens the lid, the microswitch contacts switch from closed to open, and the contact state change signal is transmitted to the control board. The processing unit sends a low-level stop command to the stirring motor, stopping the stirring motor; sends a high-level continuous operation command to the compressor to ensure that the compressor remains running and the refrigeration cycle is uninterrupted; and sends a PWM signal to the condenser fan drive module to adjust the output voltage of the drive module, reducing the condenser fan speed from the normal operating speed to a preset speed. The fan speed can be precisely controlled by adjusting the PWM duty cycle to ensure that the speed is stable within the preset low speed range. Simultaneously, the control board monitors the condenser fan speed signal in real time. If the detected speed deviates from the preset value, it immediately adjusts the PWM signal duty cycle to perform speed calibration.

[0116] In another optional implementation, an electromagnetic induction sensor is used as the lid detection element. A permanent magnet is installed inside the lid, and an induction coil is embedded in the corresponding position on the machine body, connected to the signal acquisition module of the control board. During the ice cream making process, the control board receives the electromagnetic signal from the induction coil in real time. When the lid is opened, the permanent magnet moves away from the induction coil, the amplitude of the electromagnetic signal decreases, and the control board immediately and synchronously controls the stirring motor to stop and the compressor to continue to start, while simultaneously controlling the condenser fan to reduce its speed. Specifically, the speed reduction is achieved by adjusting the power supply current of the condenser fan drive motor. The control board collects the power supply current of the fan drive motor in real time through a current sampling resistor, and judges whether the speed is up to standard based on the current value. If the current is too low, the power supply current is increased; if the current is too high, the power supply current is decreased to ensure that the fan speed is stable within the low speed range.

[0117] Step S20: After detecting that the ice cream machine bucket lid is closed, the drive current of the stirring motor is obtained, wherein the magnitude of the drive current characterizes the degree of hardening of the ice cream; Step S30: If the driving current is greater than the preset stall current, control the solenoid valve to open.

[0118] In this embodiment, after the bucket lid is opened, the stirring motor is stopped, the compressor continues to start, and the condenser fan speeds down. This ensures user safety and maintains a stable refrigeration cycle. At the same time, the condenser temperature rises and the refrigeration efficiency decreases, preventing the evaporator from overcooling and causing the ice cream on the wall to become too hard. This also prevents the bucket lid from closing and the motor from becoming stuck.

[0119] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the control method of the ice cream machine of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0120] It should be noted that the application scenarios of the control method of this application can include the following three types: First, the thawing of ice cream after it has frozen or hardened. This corresponds to the fifth embodiment described above.

[0121] In addition to its normal soft-serve ice cream making function, the ice cream machine also has a hardening function. This means that after the soft-serve ice cream is made, the churning stops, but the compressor continues to run, maintaining cooling until the ice cream hardens. After the ice cream making is complete and churning stops, the wall surface near the evaporator is colder and harder, making it difficult for the user to remove and requiring defrosting.

[0122] Specific process: Once the ice cream is made, including freezing or hardening, the stirring motor stops running, but the compressor continues to run. The solenoid valve automatically opens, allowing high-temperature refrigerant to enter the evaporator and heat the ice cream on the wall for a time t (t can vary, such as 2-3 minutes), thus thawing it. After time t, both the solenoid valve and the compressor close. After thawing, users can also choose to manually thaw the ice cream.

[0123] Second, the ice cream machine thaws after the compressor stalls due to opening the lid and adding ingredients. The ice cream machine has a function to stop the compressor when the lid is opened and a reminder to add ingredients. This corresponds to the first to fourth embodiments and the seventh embodiment described above.

[0124] Specific process: During the ice cream making process, after the user opens the lid, the stirring motor will stop running for safety reasons, while the compressor will continue to run. After a period of time, a buzzer will sound an alarm to remind the user to close the lid. After the user closes the lid, the stirring motor will attempt to start. Because the ice cream on the wall is relatively hard, the stirring motor may stall. If the motor stalls, the solenoid valve will be triggered to open and perform the defrosting operation. After the solenoid valve opens, the motor will attempt to rotate every 10 seconds until the solenoid valve has been open for 3 minutes. If the motor rotates during this period, the solenoid valve will close and the machine will run normally. If the motor cannot rotate during this period, the solenoid valve will close, the machine will stop running, and a stall alarm will be triggered.

[0125] Feeding reminder function: When the temperature sensor detects that the material temperature has dropped to T1, the machine triggers a feeding reminder, prompting the user to open the lid and add material. The control method after opening and closing the lid is the same as the above process. When the temperature sensor detects that the material temperature has dropped to T2, if the user has not opened the lid during this period, a 30-second countdown for the feeding reminder will be triggered. After the countdown ends, the feeding reminder will stop.

[0126] Third, thawing during cold storage. This corresponds to the sixth embodiment described above.

[0127] The ice cream machine has a cold-keeping function. After the ice cream has frozen or hardened, this function can be activated. During this time, the compressor operates intermittently based on the set start and stop temperature points. Specifically, the compressor runs when the ice cream temperature is higher than the start point and stops when the temperature is lower than the stop point. The mixing motor runs at low speed during the cold-keeping period after freezing and remains off during the cold-keeping period after hardening. Because there is a protection time t (e.g., 3 minutes, the exact time depends on the compressor itself) after each compressor stop, the compressor cannot start during this time t. Since the solenoid valve's defrosting function requires the compressor to remain on, the defrosting function cannot be used within t hours after the compressor stops.

[0128] Specific process: During the cooling period, the machine displays a countdown on the screen after each compressor shutdown. When the user actively uses the defrost function, the machine determines whether time t has elapsed since the last compressor shutdown. If it has, the compressor starts, the solenoid valve opens (if the compressor is already running, the solenoid valve opens directly), and the defrost function operates normally. If it has not elapsed, the screen reminds the user that the compressor is in protection mode, and a countdown can be seen on the screen. After the protection time ends, defrosting begins.

[0129] Based on the same inventive concept, this application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the control method of the ice cream machine in the above embodiments.

[0130] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory, read-only memory, erasable programmable read-only memory (EPROM), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, radio frequency (RF), etc., or any suitable combination thereof.

[0131] The aforementioned computer-readable storage medium may be included in an ice cream machine or may exist independently and not assembled into an ice cream machine.

[0132] The aforementioned computer-readable storage medium carries one or more programs, which, when executed by the ice cream machine, enable the ice cream machine to achieve the same effect as the aforementioned ice cream machine control method.

[0133] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0134] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0135] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0136] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the control method of the ice cream machine described above. This solves the technical problem of reduced operational stability of the ice cream machine caused by the stalling of the stirring motor after the ice cream bucket lid is opened or closed. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the control method of the ice cream machine provided in the above embodiments, and will not be repeated here.

[0137] The above are only some embodiments of this application and do not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A control method for an ice cream machine, characterized in that, The ice cream machine includes at least a compressor, a condenser, a throttling device, and an evaporator connected in sequence. The outlet of the compressor and the inlet of the evaporator are connected through a defrosting pipeline, and a solenoid valve is installed on the defrosting pipeline. The ice cream machine also includes a stirring motor, which is configured to provide a driving force to rotate the stirring blade. The control method for the ice cream machine includes: When the ice cream machine bucket lid is detected to be open during the ice cream making process, the stirring motor is controlled to stop and the compressor is controlled to keep running. After detecting that the lid of the ice cream machine is closed, the drive current of the stirring motor is obtained, wherein the magnitude of the drive current characterizes the degree of hardening of the ice cream; If the driving current is greater than the preset stall current, the solenoid valve is controlled to open.

2. The control method for an ice cream machine as described in claim 1, characterized in that, The ice cream machine also includes a bucket lid detection module; the control method of the ice cream machine also includes: Acquire the lid detection signal of the lid detection module, wherein the lid detection signal includes an electromagnetic signal and / or an electrical signal; Based on the lid detection signal, determine whether the lid of the ice cream machine is open.

3. The control method for an ice cream machine as described in claim 2, characterized in that, Before acquiring the lid detection signal from the lid detection module, the control method for the ice cream machine further includes: During the ice cream making process, the temperature of the materials in the ice cream machine is obtained; If the material temperature is less than or equal to a preset temperature, an opening command is generated for the ice cream machine bucket lid, wherein the opening command is used to open or prompt the opening of the ice cream machine bucket lid.

4. The control method for an ice cream machine as described in claim 1, characterized in that, If the driving current is greater than the preset stall current, and the solenoid valve is opened, the control method of the ice cream machine further includes: During the first preset time period after the solenoid valve is opened, the drive current of the stirring motor is acquired at regular intervals. If the drive current acquired each time within the first preset time period is greater than the preset stall current, the compressor is controlled to stop and an alarm message is output.

5. The control method for an ice cream machine as described in claim 1, characterized in that, If the driving current is greater than the preset stall current, and the solenoid valve is opened, the control method of the ice cream machine further includes: If the driving current is less than or equal to the preset stall current, control the stirring motor to start and the solenoid valve to close. After the ice cream is made, the solenoid valve is opened. After a second preset time period, the solenoid valve is closed and the compressor is stopped.

6. The control method for an ice cream machine as described in claim 5, characterized in that, The step of controlling the opening of the solenoid valve after the ice cream is made includes: When the ice cream machine is set to hardening mode, the stirring motor is stopped and the compressor is started to enter the hardening mode; after the ice cream hardening is detected, the solenoid valve is opened; or... When the ice cream machine is not set to hardening mode, the stirring motor is stopped, the compressor is started, and the solenoid valve is opened.

7. The control method for an ice cream machine as described in claim 5, characterized in that, After the second preset time period, after controlling the solenoid valve to close and the compressor to stop, the control method of the ice cream machine further includes: During the ice cream machine's cold-keeping process, obtain the current duration since the last compressor shutdown; If the duration exceeds a fourth preset duration, the compressor is started and the solenoid valve is opened.

8. The control method for an ice cream machine as described in claim 1, characterized in that, The ice cream machine also includes a condenser fan corresponding to the condenser; the control method of the ice cream machine further includes: When the ice cream machine bucket lid is detected to be open during the ice cream making process, the stirring motor is stopped and the compressor is kept running, while the condenser fan is controlled to reduce its speed.

9. An ice cream machine, characterized in that, The ice cream machine includes at least a compressor, a condenser, a throttling device, and an evaporator connected in sequence. The outlet of the compressor and the inlet of the evaporator are connected through a defrosting pipeline, and a solenoid valve is installed on the defrosting pipeline. The ice cream machine also includes a stirring motor, which is configured to provide a driving force to rotate the stirring blade. The ice cream machine further includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the control method for the ice cream machine as claimed in any one of claims 1 to 8.

10. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, it implements the steps of the control method for an ice cream machine as described in any one of claims 1 to 8.

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