Low-voltage protection control method and device, refrigeration equipment and storage medium

Abstract

The application discloses a low-voltage protection control method applied to a refrigeration system, wherein the refrigeration system comprises a cold storage module and a refrigeration module used for refrigerating the cold storage module; the refrigeration module comprises a compressor; the cold storage module comprises a cold storage container and a cooling medium arranged in the cold storage container; the method comprises the following steps: acquiring a real-time temperature of the cooling medium; when the real-time temperature is greater than a preset temperature, acquiring a real-time working voltage of the compressor; determining a voltage protection parameter according to the real-time working voltage and a rated working voltage of the compressor; and when the voltage protection parameter is less than a preset protection threshold, controlling the compressor to stop working; wherein the preset temperature is greater than or equal to an ice-making temperature of the refrigeration system. Therefore, the over-load protection of the compressor caused by low voltage can be improved in the refrigeration stage before the refrigeration system makes ice, the frequent starting of the compressor is avoided, and the service life of the compressor is prolonged.

Description

Technical Field

[0001] This invention relates to the field of intelligent device control technology, and more specifically, to a low-voltage protection control method, device, refrigeration equipment, and storage medium. Background Technology

[0002] In related technologies, a refrigeration system typically includes a cold storage module and a refrigeration module for cooling the cold storage module. The refrigeration module includes a compressor, and the cold storage module includes a cold storage container and a cooling medium disposed within the cold storage container.

[0003] The refrigeration module cools the cold storage module, allowing heat exchange tubes to exchange heat in the cooling medium. When the water temperature or ambient temperature is high, the compressor load increases, making it prone to overload protection. Summary of the Invention

[0004] In view of the above problems, the present invention proposes a low-pressure protection control method, device, refrigeration equipment, and storage medium to improve the above problems.

[0005] In a first aspect, embodiments of the present invention provide a low-pressure protection control method applied to a refrigeration system. The refrigeration system includes a cold storage module and a refrigeration module for cooling the cold storage module. The refrigeration module includes a compressor, and the cold storage module includes a cold storage container and a cooling medium disposed in the cold storage container. The method includes: acquiring the real-time temperature of the cooling medium; acquiring the real-time operating voltage of the compressor when the real-time temperature is greater than a preset temperature; determining voltage protection parameters based on the real-time operating voltage and the rated operating voltage of the compressor; and controlling the compressor to stop working when the voltage protection parameters are less than a preset protection threshold; wherein the preset temperature is greater than or equal to the ice-making temperature of the refrigeration system.

[0006] Secondly, embodiments of the present invention provide a low-pressure protection control device applied to a refrigeration system. The refrigeration system includes a cold storage module and a refrigeration module for cooling the cold storage module. The refrigeration module includes a compressor, and the cold storage module includes a water tank and a cooling medium disposed in the water tank. The device includes: a temperature acquisition module, a first determination module, a second determination module, and a third determination module. The temperature acquisition module acquires the real-time temperature of the cooling medium; the first determination module acquires the real-time operating voltage of the compressor when the real-time temperature is greater than a preset temperature; the second determination module determines voltage protection parameters based on the real-time operating voltage and the compressor's rated operating voltage; the third determination module controls the compressor to stop working when the voltage protection parameters are less than a preset protection threshold. The preset temperature is greater than or equal to the ice-making temperature of the refrigeration system.

[0007] Thirdly, embodiments of the present invention provide a refrigeration device, the device including 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 low-pressure protection control method in the above embodiments.

[0008] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing a computer program, which can be invoked by a processor to execute the low-voltage protection control method described in the above embodiments.

[0009] This invention provides a low-pressure protection control method applied to a refrigeration system. The refrigeration system includes a cold storage module and a refrigeration module for cooling the cold storage module. The refrigeration module includes a compressor, and the cold storage module includes a cold storage container and a cooling medium disposed in the cold storage container. The method includes: acquiring the real-time temperature of the cooling medium; acquiring the real-time operating voltage of the compressor when the real-time temperature is greater than a preset temperature; determining voltage protection parameters based on the real-time operating voltage and the compressor's rated operating voltage; and controlling the compressor to stop working when the voltage protection parameters are less than a preset protection threshold. The preset temperature is greater than or equal to the ice-making temperature of the refrigeration system. This improves the situation where the compressor experiences overload protection due to low voltage during the refrigeration stage before ice making, avoids frequent compressor starts, and extends the compressor's service life. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments and drawings obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0011] Figure 1 A schematic diagram of the refrigeration system provided in an embodiment of the present invention is shown.

[0012] Figure 2 A schematic flowchart of the low-voltage protection control method provided in an embodiment of the present invention is shown.

[0013] Figure 3 A schematic diagram of the low-voltage protection control device provided in an embodiment of the present invention is shown.

[0014] Figure 4 A schematic diagram of the structure of the refrigeration equipment provided in an embodiment of the present invention is shown.

[0015] Figure 5A structural block diagram of a computer-readable storage medium provided in an embodiment of the present invention is shown. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0017] In related technologies, a refrigeration system typically includes a cold storage module and a refrigeration module for cooling the cold storage module. The refrigeration module includes a compressor, and the cold storage module includes a cold storage container and a cooling medium disposed within the cold storage container.

[0018] The cold storage container is filled with a cooling medium, and the refrigeration module is partially immersed in the cooling medium to cool it; the heat exchange tubes exchange heat with the cooling medium, thereby outputting low-temperature water.

[0019] When the temperature of the cooling medium or the ambient temperature is high, the compressor load increases, making it prone to overload protection and shutdown. After shutdown, the compressor will continuously attempt to restart, and frequent starts can shorten its lifespan. Specifically, the compressor generates torque through the motor. When the compressor load is too high, the torque required for its operation is also greater. If the voltage is too low at this time, the compressor is prone to starting failure or rapid shutdown due to overload, severely affecting its service life.

[0020] To address the aforementioned problems, the inventors have proposed a low-pressure protection control method for a refrigeration system. This method includes a cold storage module and a refrigeration module for cooling the cold storage module. The refrigeration module includes a compressor, and the cold storage module includes a cold storage container and a cooling medium disposed within the cold storage container. The method includes: acquiring the real-time temperature of the cooling medium; acquiring the real-time operating voltage of the compressor when the real-time temperature is greater than a preset temperature; determining voltage protection parameters based on the real-time operating voltage and the compressor's rated operating voltage; and controlling the compressor to stop operating when the voltage protection parameters are less than a preset protection threshold. The preset temperature is greater than or equal to the ice-making temperature of the refrigeration system. This improves the situation where the compressor experiences overload protection due to low voltage during the refrigeration stage before ice making, avoids frequent compressor starts, and extends the compressor's service life.

[0021] The application environment of the low-voltage protection control method provided in the embodiments of the present invention will be described below.

[0022] Please see Figure 1The low-pressure protection control method provided in this embodiment of the invention can be applied to the refrigeration system 100. The refrigeration system 100 can be applied to water dispensers, sparkling water machines, or other refrigeration equipment with refrigeration functions; this invention does not limit its application.

[0023] In embodiments of the present invention, such as Figure 1 As shown, the refrigeration system 100 includes a cold storage module 120 and a refrigeration module 110 for cooling the cold storage module 120. The refrigeration module 110 includes a compressor 111, and the cold storage module 120 includes a cold storage container 121 and a cooling medium disposed in the cold storage container 121.

[0024] In some embodiments, the refrigeration module 110 may further include a condenser 113 and an evaporator 115. The compressor 111, condenser 113 and evaporator 115 are connected in sequence to form a refrigeration cycle loop. The evaporator 115 is disposed in the cold storage container 121 and is partially or completely immersed in the cooling medium to cool the cooling medium.

[0025] In some implementations, the cooling medium may be water or other refrigerants.

[0026] In some embodiments, the cold storage module 120 further includes a water pump 123 disposed in the cold storage container 121, the water pump 123 being used to stir the cooling medium.

[0027] In some embodiments, the refrigeration system 100 may include a temperature detector 130, which can be used to detect the real-time temperature of the cooling medium. The temperature detector 130 may be an NTC (Negative Temperature Coefficient) temperature sensor, an infrared temperature sensor, etc., and the specific type can be selected according to actual needs, without limitation here.

[0028] In some implementations, the refrigeration system 100 may include a voltage detector that can be used to detect the real-time operating voltage of the compressor 111.

[0029] In some embodiments, the refrigeration system 100 may include a water pipe 140, and a portion of the water pipe 140 may be coiled to form a heat exchange pipe 141. The heat exchange pipe 141 is immersed in the cooling medium. When water flows through the water pipe 140, it can exchange heat with the cooling medium through the pipe wall of the heat exchange pipe 141, thereby outputting low-temperature water.

[0030] In some embodiments, the refrigeration system 100 may include an inlet pipe 150 and a drain pipe 160. One end of the inlet pipe 150 is connected to the cold storage container 121, and the inlet pipe 150 is used to provide a cooling medium to the cold storage container 121. One end of the drain pipe 160 is connected to the cold storage container 121, and the drain pipe 160 is used to drain the cooling medium from the cold storage container 121 when the refrigeration system 100 is not used for a long time.

[0031] In some embodiments, the refrigeration system 100 may include a controller, which may be connected to a temperature detector 130 and a voltage detector, respectively. The controller may be used to control the operation of the cold storage module 120 and the refrigeration module 110 based on the real-time temperature detected by the temperature detector 130 and the real-time operating voltage detected by the voltage detector. Specifically, the controller may be used to control the start and stop of the compressor 111 and the water pump 123 based on the real-time temperature detected by the temperature detector 130 and the real-time operating voltage detected by the voltage detector.

[0032] Alternatively, the controller may be an MCU (Microcontroller Unit), MPU (Microprocessor Unit), CPU (Central Processing Unit), etc.

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0034] like Figure 2 As shown, Figure 2 A schematic flowchart of a low-pressure protection control method provided in an embodiment of the present invention is shown. This low-pressure protection control method can be applied to the above-mentioned refrigeration system. The method includes steps 210 to 240.

[0035] Step 210: Obtain the real-time temperature of the cooling medium.

[0036] In some implementations, the real-time temperature of the cooling medium can be detected by a temperature detector.

[0037] During the operation of the refrigeration system, the temperature of the cooling medium can be collected periodically at preset sampling intervals as the real-time temperature.

[0038] Step 220: When the real-time temperature is greater than the preset temperature, obtain the real-time operating voltage of the compressor.

[0039] In some implementations, the preset temperature can be pre-set as needed.

[0040] The preset temperature is greater than or equal to the ice-making temperature of the refrigeration system. The ice-making temperature can be determined based on the properties of the cooling medium used. When the real-time temperature is lower than the ice-making temperature, the refrigeration system can make ice. When the real-time temperature is greater than or equal to the ice-making temperature, the compressor load is relatively high. To improve the compressor's lifespan, the compressor's operating status is controlled during this stage, which will be explained in detail below.

[0041] In some implementations, the real-time operating voltage of the compressor can be detected by a voltage detector.

[0042] As an example, if the preset temperature is set to 10℃, when the temperature detector detects that the real-time temperature of the cooling medium is greater than 10℃, such as 11℃, 13℃, or 20℃, then the voltage detector will detect the real-time operating voltage of the compressor.

[0043] In some embodiments, step 220, when the real-time temperature is greater than the preset temperature, obtains the real-time operating voltage of the compressor, including the following steps.

[0044] (1) When the real-time temperature is greater than the preset temperature, determine the preset temperature range corresponding to the real-time temperature.

[0045] (2) Determine the preset protection threshold corresponding to the preset temperature range.

[0046] (3) Obtain the real-time operating voltage of the compressor.

[0047] In some implementations, the preset temperature range can be pre-set as needed.

[0048] In some implementations, the preset protection threshold can be pre-set as needed.

[0049] In some implementations, the preset temperature range may include multiple temperature ranges, each corresponding to a different preset protection threshold, thereby enabling more precise control.

[0050] As an example, let's set the preset temperature to 10℃, the preset temperature range to include [10, 30) and [30, 35), the preset protection threshold for the preset temperature range [10, 30) to be 85%, and the preset protection threshold for the preset temperature range [30, 35) to be 90%, then:

[0051] When the temperature detector detects that the real-time temperature of the cooling medium is 11℃, it is determined that the real-time temperature belongs to the preset temperature range [10, 30). The preset temperature threshold corresponding to the preset temperature range [10, 30) is determined to be 85%. Then, the real-time operating voltage of the compressor is detected by the voltage detector.

[0052] When the temperature detector detects that the real-time temperature of the cooling medium is 32℃, it is determined that the real-time temperature belongs to the preset temperature range [30, 35). The preset temperature threshold corresponding to the preset temperature range [30, 35) is determined to be 90%. Then, the real-time operating voltage of the compressor is detected by the voltage detector.

[0053] Step 230: Determine the voltage protection parameters based on the real-time operating voltage and the compressor's rated operating voltage.

[0054] In some implementations, the rated operating voltage can be the same as the standard voltage of the country where it is located. For example, the standard voltage in China is generally 220V, in Japan it is generally 100V, and in the United States it is generally 120V, and so on. For ease of understanding, the following explanation will use the compressor's rated operating voltage of 220V as an example.

[0055] In some implementations, the voltage protection parameter can be the ratio of the real-time operating voltage to the rated operating voltage.

[0056] For example, when the voltage detector detects that the real-time operating voltage of the compressor is 180V, the voltage protection parameter = real-time operating voltage / rated operating voltage = 180V / 220V ≈ 80%.

[0057] For example, when the voltage detector detects that the real-time operating voltage of the compressor is 195V, the voltage protection parameter = real-time operating voltage / rated operating voltage = 195V / 220V ≈ 88%.

[0058] Step 240: When the voltage protection parameter is less than the preset protection threshold, control the compressor to stop working.

[0059] In some implementations, when the real-time temperature exceeds the preset temperature, the temperature of the cooling medium or ambient temperature is also high, leading to a higher temperature at the evaporator end. This increases the compressor load, making it prone to overload protection and shutdown. After shutdown, the compressor will continuously attempt to restart, and frequent starts can shorten its lifespan. Therefore, the technical solution provided in this invention obtains the compressor's real-time operating voltage when the real-time temperature exceeds the preset temperature. Voltage protection parameters are determined based on the real-time operating voltage and the compressor's rated operating voltage. When the voltage protection parameters are lower than a preset protection threshold, the compressor is controlled to stop working. This improves the situation where the compressor overloads due to low voltage during the refrigeration stage before ice making, avoids frequent compressor starts, and extends the compressor's lifespan.

[0060] As an example, let's set the preset temperature to 10℃, and the preset temperature range to include two temperature ranges: [10, 30) and [30, 35). Let's set the preset protection threshold for the temperature range [10, 30) to 85%, and the preset protection threshold for the temperature range [30, 35) to 90%. Then:

[0061] When the temperature detector detects that the real-time temperature of the cooling medium is 11℃, it is determined that the real-time temperature belongs to the preset temperature range [10, 30). The preset temperature threshold corresponding to the preset temperature range [10, 30) is determined to be 85%. When the voltage detector detects that the real-time operating voltage of the compressor is 180V, it is determined that the voltage protection parameter = real-time operating voltage / rated operating voltage = 180V / 220V ≈ 80%. Since the voltage protection parameter 80% is less than the preset temperature threshold 85%, the controller controls the compressor to stop working.

[0062] When the temperature detector detects that the real-time temperature of the cooling medium is 32℃, it is determined that the real-time temperature belongs to the preset temperature range [30, 35). The preset temperature threshold corresponding to the preset temperature range [30, 35) is determined to be 90%. When the voltage detector detects that the real-time operating voltage of the compressor is 195V, it is determined that the voltage protection parameter = real-time operating voltage / rated operating voltage = 180V / 220V ≈ 88%. Since the voltage protection parameter 88% is less than the preset temperature threshold of 90%, the controller controls the compressor to stop working.

[0063] In some embodiments, step 240, which involves controlling the compressor to stop working when the voltage protection parameter is less than a preset protection threshold, includes: controlling the compressor to stop working and outputting a low-pressure fault signal when the voltage protection parameter is less than the preset protection threshold.

[0064] In some implementations, the low-voltage fault signal can be vibration, light, sound, text message, etc., and the present invention does not limit this.

[0065] The low-pressure fault signal allows users to quickly grasp the compressor's operating status, enabling them to make rapid adjustments when the compressor experiences low pressure.

[0066] In some embodiments, the low-pressure protection control method provided by the present invention may further include the steps of: if the real-time temperature is less than or equal to a preset temperature or the voltage protection parameter is greater than or equal to a preset protection threshold, then controlling the working state of the compressor and / or controlling the working state of the cold storage module according to the real-time temperature.

[0067] Specifically, if the real-time temperature is less than or equal to the preset temperature, the compressor's operating status is controlled according to the real-time temperature.

[0068] If the real-time temperature is less than or equal to the preset temperature, the working status of the cold storage module will be controlled according to the real-time temperature.

[0069] If the real-time temperature is less than or equal to the preset temperature, the operating status of the compressor and the cold storage module will be controlled according to the real-time temperature.

[0070] If the voltage protection parameter is greater than or equal to the preset protection threshold, the compressor's operating status is controlled according to the real-time temperature.

[0071] If the voltage protection parameter is greater than or equal to the preset protection threshold, the working status of the cold storage module is controlled according to the real-time temperature.

[0072] If the voltage protection parameter is greater than or equal to the preset protection threshold, the compressor's operating status is controlled according to the real-time temperature, and the cold storage module's operating status is also controlled according to the real-time temperature.

[0073] Furthermore, in some embodiments, the above steps control the compressor's operating state based on real-time temperature, including the following steps:

[0074] (1) If the real-time temperature is the temperature obtained when the cooling command is received, then the real-time temperature shall be used as the start-up temperature.

[0075] (2) If the starting temperature is higher than the ice-making temperature, the refrigeration module will be started to refrigerate.

[0076] (3) If the starting temperature is lower than the ice-making temperature, the real-time temperature of the cooling medium will be continuously monitored until the real-time temperature of the cooling medium is higher than the ice-making temperature, at which point the refrigeration module will be started to cool.

[0077] The ice-making temperature is higher than the shutdown temperature.

[0078] In some implementations, the shutdown temperature can be preset according to the required thickness of the ice-making layer.

[0079] As an example, the ice-making temperature is set to 1℃. When the real-time temperature is less than or equal to the preset temperature, or the voltage protection parameter is greater than or equal to the preset protection threshold, then:

[0080] When the refrigeration system receives a refrigeration command, it uses the real-time temperature of the cooling medium detected by the temperature detector as the start-up temperature. For example, when the temperature detector detects a real-time temperature of 2°C (i.e., the start-up temperature is 2°C), which is higher than the ice-making temperature, the refrigeration module is activated, and the compressor and evaporator begin operating. When the temperature detector detects a real-time temperature of 0°C (i.e., the start-up temperature is 0°C), which is lower than the ice-making temperature, the refrigeration module does not start. The temperature detector continues to monitor the real-time temperature of the cooling medium until it detects a real-time temperature greater than 1°C, at which point the refrigeration module is activated.

[0081] In some implementations, cooling commands can be generated based on user input.

[0082] For example, the cooling system can be equipped with a touch screen that displays cooling options and other functions. Users can trigger and generate cooling commands by touching the cooling options.

[0083] In addition to receiving user input via a touchscreen display, a cooling system can also receive user input via buttons. For example, a cooling system can have a cooling button, which the user can press to trigger and generate a cooling command.

[0084] The refrigeration system can also be equipped with a communication module, which can communicate with the user's terminal so that the user can trigger and generate refrigeration commands through the application software associated with the refrigeration system.

[0085] In some embodiments, the above steps, which control the operating state of the cold storage module based on real-time temperature, include the following steps:

[0086] (1) When the real-time temperature is greater than or equal to the critical temperature of the refrigeration system, control the water pump to stop working.

[0087] (2) When the real-time temperature is less than the critical temperature and the real-time temperature is greater than or equal to the load temperature of the refrigeration system, the water pump is controlled to work according to the load start-stop ratio.

[0088] (3) When the real-time temperature is lower than the load temperature and the real-time temperature is greater than or equal to the ice-making temperature, control the water pump to start working.

[0089] (4) When the real-time temperature is lower than the ice-making temperature and the real-time temperature is greater than or equal to the shutdown temperature of the refrigeration system, the water pump is controlled to work according to the ice-making start-stop ratio.

[0090] Among them, the critical temperature is greater than the load temperature, the load temperature is greater than the ice-making temperature, and the ice-making temperature is greater than the shutdown temperature.

[0091] In some implementations, the critical temperature can be preset according to actual needs. In some implementations, the load temperature can be preset according to actual needs. When the real-time temperature is greater than the load temperature, the compressor load is greater; the higher the temperature, the greater the load.

[0092] In some implementations, the load start-up / stop ratio can be preset according to actual needs to prevent localized ice blockage.

[0093] In some implementations, the ice-making start / stop ratio can be preset according to actual needs to adjust the ice thickness.

[0094] In some implementations, the cooling module is controlled to stop working when the real-time temperature is lower than the shutdown temperature.

[0095] As an example, the critical temperature is set to 30℃, the load temperature to 10℃, the ice-making temperature to 1℃, and the shutdown temperature to -2.5℃. When the real-time temperature is less than or equal to the preset temperature, or the voltage protection parameter is greater than or equal to the preset protection threshold, then:

[0096] When the real-time temperature is greater than or equal to 30℃, the controller will stop the water pump.

[0097] When the real-time temperature is within the temperature range [10, 30), the refrigeration system operates according to the load start-stop ratio. For example, when the real-time temperature is within the temperature range [10, 30), the load start-stop ratio can be 1 / 5, with the water pump starting for 1 minute and then stopping for 5 minutes. Specifically, when the real-time temperature is 15℃, the water pump operates for 1 minute starting and then stopping for 5 minutes; when the real-time temperature is 20℃, the water pump operates for 1 minute starting and then stopping for 5 minutes.

[0098] When the real-time temperature is within the temperature range [1, 10), the controller controls the water pump to remain in working condition.

[0099] When the real-time temperature is within the temperature range [-2.5℃, 1℃), the refrigeration system operates according to the ice-making start-stop ratio. For example, when the real-time temperature is within the temperature range [-2.5℃, 1℃), the ice-making start-stop ratio can be 1 / 3, with the water pump starting for 1 minute and stopping for 3 minutes. Specifically, when the real-time temperature is -2℃, the water pump operates for 1 minute starting and 3 minutes stopping; when the real-time temperature is 0.5℃, the water pump operates for 1 minute starting and 3 minutes stopping.

[0100] When the real-time temperature is below -2.5℃, the controller stops the refrigeration module from working.

[0101] It should be noted that the values ​​for temperature, voltage, preset protection threshold, start-stop ratio, and start-stop time in the above examples are merely illustrative for ease of understanding. Specific values ​​can be set according to actual needs, and this invention does not impose any limitations. Furthermore, in the above examples, the start-stop ratio is only the ratio of start-up time to shutdown time, not the specific start-stop time. The start-up time and shutdown time can be further set according to the ratio.

[0102] In some embodiments, the low-pressure protection control method provided by the present invention may further include the step of: if the compressor stops working, controlling the cold storage module to stop working.

[0103] Specifically, if the compressor stops working, the controller will stop the water pump. This allows the water pump to stop working when the refrigeration module is not cooling, saving energy.

[0104] Please refer to the following: Figure 3 This invention also provides a low-pressure protection control device 300, applied to a refrigeration system. The refrigeration system includes a cold storage module and a refrigeration module for cooling the cold storage module. The refrigeration module includes a compressor, and the cold storage module includes a water tank and a cooling medium disposed in the water tank. The device 300 includes: a temperature acquisition module 310, a first determination module 320, a second determination module 330, and a third determination module 340.

[0105] The temperature acquisition module 310 is used to acquire the real-time temperature of the cooling medium.

[0106] The first determining module 320 is used to obtain the real-time operating voltage of the compressor when the real-time temperature is greater than the preset temperature.

[0107] The second determining module 330 is used to determine voltage protection parameters based on the real-time operating voltage and the compressor's rated operating voltage.

[0108] The third determining module 340 is used to control the compressor to stop working when the voltage protection parameter is less than the preset protection threshold.

[0109] The preset temperature is greater than or equal to the ice-making temperature of the refrigeration system.

[0110] In some embodiments, the second determining module 330 is specifically used for: determining a preset temperature range corresponding to the real-time temperature when the real-time temperature is greater than the preset temperature; determining a preset protection threshold corresponding to the preset temperature range; and obtaining the real-time operating voltage of the compressor.

[0111] In some embodiments, the third determining module 340 is specifically used to: control the compressor to stop working and output a low-pressure fault signal when the voltage protection parameter is less than a preset protection threshold.

[0112] It should be noted that, for the embodiments of device 300, since they are basically similar to those of the method embodiments, the description is relatively simple, and relevant details can be found in the descriptions of the method embodiments. Any processing method described in the method embodiments can be implemented in the device 300 embodiments through corresponding processing modules, and will not be elaborated upon further in the device 300 embodiments.

[0113] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0114] Please see Figure 4 This invention also provides a refrigeration device 400. The device 400 includes one or more processors 410 and a memory 420. Figure 4 Take a processor 410 as an example.

[0115] In some implementations, the processor 410 and the memory 420 may be connected via a bus or other means. Figure 4 Taking the example of a connection between China and Israel via a bus.

[0116] In some embodiments, the processor 410 is configured to acquire the real-time temperature of the cooling medium; acquire the real-time operating voltage of the compressor when the real-time temperature is greater than a preset temperature; determine voltage protection parameters based on the real-time operating voltage and the rated operating voltage of the compressor; and control the compressor to stop working when the voltage protection parameters are less than a preset protection threshold.

[0117] The preset temperature is greater than or equal to the ice-making temperature of the refrigeration system.

[0118] In some embodiments, memory 420 serves as a non-volatile computer-readable storage medium, used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as the program instructions / modules of the low-voltage protection control method in the embodiments of the present invention. Processor 410 executes various functional applications and data processing of the refrigeration device 400 by running the non-volatile software programs, instructions, and modules stored in memory 420, thereby implementing the low-voltage protection control method of the above-described method embodiments.

[0119] In some embodiments, memory 420 may include a program storage area and a data storage area, wherein the program storage area may store the operating system and applications required for at least one function; and the data storage area may store data created based on the use of the cooling device 400, etc. Furthermore, memory 420 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, memory 420 may optionally include memory remotely located relative to processor 410, and this remote memory may be connected to controller 110 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0120] In some implementations, one or more modules are stored in memory 420 and, when executed by one or more processors 410, perform the low-voltage protection control method in any of the above method embodiments, for example, performing the method described above. Figure 2 Steps 210 to 240 of the method.

[0121] Please see Figure 5 This invention also provides a computer-readable storage medium. The computer-readable storage medium 500 stores a computer program 510, which can be invoked by a processor to execute the low-voltage protection control method provided in this invention.

[0122] The computer-readable storage medium 500 may be an electronic storage device such as flash memory, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), hard disk, or read-only memory (ROM). Optionally, the computer-readable storage medium includes a non-transitory computer-readable storage medium. The computer-readable storage medium 500 has storage space for a computer program that performs any of the method steps of the low-voltage protection control method described above. These computer programs 510 can be read from or written to one or more computer program products. The computer program may, for example, be compressed in a suitable form.

[0123] In summary, this invention provides a low-pressure protection control method applied to a refrigeration system. The refrigeration system includes a cold storage module and a refrigeration module for cooling the cold storage module. The refrigeration module includes a compressor, and the cold storage module includes a cold storage container and a cooling medium disposed in the cold storage container. The method includes: acquiring the real-time temperature of the cooling medium; acquiring the real-time operating voltage of the compressor when the real-time temperature is greater than a preset temperature; determining voltage protection parameters based on the real-time operating voltage and the compressor's rated operating voltage; and controlling the compressor to stop working when the voltage protection parameters are less than a preset protection threshold. The preset temperature is greater than or equal to the ice-making temperature of the refrigeration system. This improves the situation where the compressor experiences overload protection due to low voltage during the refrigeration stage before ice making, avoids frequent compressor starts, and extends the compressor's service life.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-voltage protection control method, characterized in that, The method is applied to a refrigeration system, the refrigeration system including a cold storage module and a refrigeration module for cooling the cold storage module, the refrigeration module including a compressor, the cold storage module including a cold storage container, a cooling medium disposed in the cold storage container, and a water pump disposed in the cold storage container, the water pump being used to agitate the cooling medium; the method includes: Obtain the real-time temperature of the cooling medium; When the real-time temperature is greater than the preset temperature, the real-time operating voltage of the compressor is obtained; The voltage protection parameters are determined based on the real-time operating voltage and the compressor's rated operating voltage; and When the voltage protection parameter is less than the preset protection threshold, the compressor is controlled to stop working; Wherein, the preset temperature is greater than or equal to the ice-making temperature of the refrigeration system; If the real-time temperature is less than or equal to the preset temperature, or the voltage protection parameter is greater than or equal to the preset protection threshold, then the operating mode of the water pump is controlled according to the real-time temperature, wherein: When the real-time temperature is greater than or equal to the critical temperature of the refrigeration system, the water pump is controlled to stop working; When the real-time temperature is less than the critical temperature and greater than or equal to the load temperature of the refrigeration system, the water pump is controlled to operate according to the load start-stop ratio. When the real-time temperature is less than the load temperature but greater than or equal to the ice-making temperature, the water pump is controlled to start working; When the real-time temperature is lower than the ice-making temperature and greater than or equal to the shutdown temperature of the refrigeration system, the water pump is controlled to operate according to the ice-making start-stop ratio. Wherein, the critical temperature is higher than the load temperature, the load temperature is higher than the ice-making temperature, and the ice-making temperature is higher than the shutdown temperature.

2. The method according to claim 1, characterized in that, The step of obtaining the real-time operating voltage of the compressor when the real-time temperature is greater than the preset temperature includes: When the real-time temperature is greater than the preset temperature, the preset temperature range corresponding to the real-time temperature is determined. Determine the preset protection threshold corresponding to the preset temperature range; and Obtain the real-time operating voltage of the compressor.

3. The method according to claim 1, characterized in that, The step of controlling the compressor to stop working when the voltage protection parameter is less than the preset protection threshold includes: When the voltage protection parameter is less than the preset protection threshold, the compressor is controlled to stop working and a low-pressure fault signal is output.

4. The method according to claim 1, characterized in that, The method further includes: If the real-time temperature is less than or equal to the preset temperature or the voltage protection parameter is greater than or equal to the preset protection threshold, then the operating state of the compressor and / or the operating state of the cold storage module are controlled according to the real-time temperature.

5. The method according to claim 4, characterized in that, The step of controlling the compressor's operating state based on the real-time temperature includes: If the real-time temperature is the temperature obtained when the cooling command is received, then the real-time temperature is used as the start-up temperature; If the start-up temperature is higher than the ice-making temperature, then the refrigeration module is activated for refrigeration; and If the start-up temperature is lower than the ice-making temperature, the real-time temperature of the cooling medium is continuously monitored until the real-time temperature of the cooling medium is higher than the ice-making temperature, at which point the refrigeration module is started to perform refrigeration. The ice-making temperature is higher than the shutdown temperature.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: If the compressor stops working, the cold storage module will also stop working.

7. A low-voltage protection control device, characterized in that, An apparatus for use in a refrigeration system, the refrigeration system comprising a cold storage module and a refrigeration module for cooling the cold storage module, the refrigeration module comprising a compressor, the cold storage module comprising a water tank, a cooling medium disposed in the water tank, and a water pump disposed in the water tank, the water pump being used to agitate the cooling medium; the apparatus comprising: A temperature acquisition module is used to acquire the real-time temperature of the cooling medium; The first determining module is used to obtain the real-time operating voltage of the compressor when the real-time temperature is greater than the preset temperature; The second determining module is used to determine voltage protection parameters based on the real-time operating voltage and the rated operating voltage of the compressor; and The third determining module is used to control the compressor to stop working when the voltage protection parameter is less than the preset protection threshold. Wherein, the preset temperature is greater than or equal to the ice-making temperature of the refrigeration system; The device is further configured to control the operating mode of the water pump according to the real-time temperature if the real-time temperature is less than or equal to the preset temperature or the voltage protection parameter is greater than or equal to the preset protection threshold, wherein: when the real-time temperature is greater than or equal to the critical temperature of the refrigeration system, the water pump is controlled to stop working; when the real-time temperature is less than the critical temperature and greater than or equal to the load temperature of the refrigeration system, the water pump is controlled to operate according to the load start-stop ratio; when the real-time temperature is less than the load temperature and greater than or equal to the ice-making temperature, the water pump is controlled to start working; when the real-time temperature is less than the ice-making temperature and greater than or equal to the shutdown temperature of the refrigeration system, the water pump is controlled to operate according to the ice-making start-stop ratio; wherein the critical temperature is higher than the load temperature, the load temperature is higher than the ice-making temperature, and the ice-making temperature is higher than the shutdown temperature.

8. A refrigeration device, characterized in that, include: At least one processor; as well as A memory that is communicatively connected to the at least one processor; The memory stores instructions that can be executed by the at least one processor, which are executed by the at least one processor to enable the at least one processor to perform the low-voltage protection control method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that can be invoked by a processor to execute the low-voltage protection control method as described in any one of claims 1-6.

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