Refrigerator deep cooling control method and device, refrigerator and computer readable storage medium

Abstract

This application discloses a method, apparatus, refrigerator, and computer-readable storage medium for controlling deep cooling in a refrigerator. The method includes: responding to a deep cooling command, determining whether the internal temperature of the refrigerator has reached a preset start-up temperature; if the internal temperature of the refrigerator has reached the preset start-up temperature, determining the deep cooling speed of the refrigeration fan based on the internal temperature of the refrigerator, preset evaporator size information, preset refrigerant information, and a target deep cooling temperature; and controlling the refrigeration fan to operate at the deep cooling speed to make the internal temperature of the refrigerator reach the target deep cooling temperature. Without increasing the complexity of the refrigerator structure or the cost of deep cooling, when the internal temperature of the refrigerator reaches the preset start-up temperature, the deep cooling speed is determined and the refrigeration fan is controlled to operate at the deep cooling speed to make the internal temperature of the refrigerator reach the target deep cooling temperature. Deep cooling is achieved in the refrigerator by controlling only the speed of the refrigeration fan.

Description

Technical Field

[0001] This application relates to the field of refrigerator control technology, specifically to a refrigerator deep-cold control method, device, refrigerator, and computer-readable storage medium. Background Technology

[0002] The freezing temperatures of existing refrigerators are generally sufficient to meet the freezing requirements of food. However, as users store frozen food for longer periods and in greater variety, or as users store large quantities of food at once and need to freeze it quickly, the refrigeration system requires faster freezing speeds and lower cryogenic temperatures.

[0003] However, to achieve lower cryogenic temperatures, existing refrigerators typically require modifications to the internal refrigeration system, the addition of cryogenic compartments, and changes to the refrigeration technology. This not only increases the complexity of the refrigerator's structure but also raises the cost of cryogenic cooling. Therefore, finding a way to enable cryogenic cooling in refrigerators without increasing structural complexity or cost is an urgent problem to be solved. Summary of the Invention

[0004] This application provides a refrigerator deep-cold control method, device, refrigerator, and computer-readable storage medium, which enables the refrigerator to perform deep-cold operations without increasing the complexity of the refrigerator structure or the cost of deep-cold operations.

[0005] In a first aspect, embodiments of this application provide a method for controlling the deep cooling of a refrigerator, the method comprising:

[0006] In response to the deep-cooling command, determine whether the internal temperature of the refrigerator has reached the preset start-up temperature;

[0007] If the internal temperature of the refrigerator reaches the preset start-up temperature, the deep-cold rotation speed of the refrigeration fan is determined based on the internal temperature of the refrigerator, the preset evaporator size information, the preset refrigerant information, and the target deep-cold temperature.

[0008] The refrigeration fan is controlled to operate at the deep-cold speed so that the internal temperature of the refrigerator reaches the target deep-cold temperature.

[0009] Secondly, embodiments of this application provide a refrigerator deep-freezing control device.

[0010] The judgment unit is used to respond to the deep cooling command and determine whether the internal temperature of the refrigerator has reached the preset start-up temperature;

[0011] The determining unit is used to determine the deep-cold rotation speed of the refrigeration fan based on the refrigerator's internal temperature, preset evaporator size information, preset refrigerant information, and target deep-cold temperature if the refrigerator's internal temperature reaches the preset start-up temperature.

[0012] The control unit is used to control the refrigeration fan to operate at the deep-cold speed so that the internal temperature of the refrigerator reaches the target deep-cold temperature.

[0013] Thirdly, embodiments of this application also provide a refrigerator, including a memory storing multiple instructions; a processor loads instructions from the memory to execute the steps of any of the refrigerator deep-cooling control methods provided in embodiments of this application.

[0014] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a plurality of instructions adapted for loading by a processor to execute the steps of any of the refrigerator deep-cooling control methods provided in embodiments of this application.

[0015] Fifthly, embodiments of this application also provide a computer program product, including a computer program or instructions, which, when executed by a processor, implement the steps in any of the refrigerator deep-freezing control methods provided in embodiments of this application.

[0016] The solution adopted in the application embodiment responds to a deep-cooling command, determining whether the refrigerator's internal temperature has reached the preset start-up temperature. If the refrigerator's internal temperature has reached the preset start-up temperature, the deep-cooling speed of the refrigeration fan is determined based on the refrigerator's internal temperature, preset evaporator size information, preset refrigerant information, and the target deep-cooling temperature. The refrigeration fan is then controlled to operate at the deep-cooling speed to bring the refrigerator's internal temperature to the target deep-cooling temperature. Without increasing the complexity of the refrigerator structure or the cost of deep-cooling, when the refrigerator's internal temperature reaches the preset start-up temperature, the deep-cooling speed is determined, and the refrigeration fan is controlled to operate at the deep-cooling speed to bring the refrigerator's internal temperature to the target deep-cooling temperature. Deep-cooling is achieved by controlling only the speed of the refrigeration fan. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic flowchart of the first embodiment of the refrigerator deep-crystallization control method provided in this application;

[0019] Figure 2 This is a schematic flowchart of the second embodiment of the refrigerator deep-cold control method provided in this application;

[0020] Figure 3 This is a schematic flowchart of the third embodiment of the refrigerator deep-cold control method provided in this application;

[0021] Figure 4 This is a schematic diagram illustrating the specific implementation process of the refrigerator deep-cold control method provided in this application;

[0022] Figure 5 This is a schematic diagram of the structure of the refrigerator deep-crystallization control device provided in the embodiments of this application;

[0023] Figure 6 This is a schematic diagram of the refrigerator provided in the embodiments of this application. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. At the same time, in the description of the embodiments of this application, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] This application provides a method, apparatus, refrigerator, and computer-readable storage medium for controlling deep freezing in a refrigerator.

[0026] Specifically, this embodiment will be described from the perspective of a refrigerator deep-cold control device, which can be integrated into the refrigerator, that is, the refrigerator deep-cold control method of this application embodiment can be executed by the refrigerator.

[0027] The deep-freezing control method for refrigerators provided in this application can be applied to refrigerators, food storage devices, etc.

[0028] The following detailed description is provided in conjunction with the accompanying drawings. In this embodiment, a refrigerator is used as an example of the executing entity. It should be noted that the order of description in the following embodiments is not intended to limit the preferred order of the embodiments. Although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in a different order than that shown in the accompanying drawings.

[0029] Please refer to Figure 1 The first embodiment of this application proposes a method for controlling the deep freezing of a refrigerator, which includes the following steps:

[0030] Step 101: In response to the deep cooling command, determine whether the internal temperature of the refrigerator has reached the preset start-up temperature;

[0031] Step 102: If the internal temperature of the refrigerator reaches the preset start-up temperature, then the deep-cold rotation speed of the refrigeration fan is determined based on the internal temperature of the refrigerator, the preset evaporator size information, the preset refrigerant information and the target deep-cold temperature.

[0032] Step 103: Control the refrigeration fan to operate at the deep-cold speed so that the internal temperature of the refrigerator reaches the target deep-cold temperature.

[0033] In this embodiment, in response to a user-inputted deep-cooling command, the refrigerator first determines whether the internal temperature has reached the preset start-up temperature. If the internal temperature has reached the preset start-up temperature, the refrigerator determines the deep-cooling speed of the refrigeration fan based on the internal temperature, preset evaporator size information, preset refrigerant information, and the target deep-cooling temperature. The refrigerator then controls the refrigeration fan to operate at the deep-cooling speed to bring the internal temperature to the target deep-cooling temperature. After the internal temperature reaches the target deep-cooling temperature, the refrigerator continues to control the refrigeration fan to operate at the deep-cooling speed until a deep-cooling end command is detected, at which point deep-cooling stops. Furthermore, if the refrigerator determines that the internal temperature has not reached the preset start-up temperature, it controls the refrigeration fan to operate at a preset first or second preset speed to bring the internal temperature to the preset start-up temperature, thereby initiating deep-cooling.

[0034] It's important to note that deep cooling in a refrigerator lowers the internal temperature, slowing down the growth of microorganisms and the acidification process, thus extending the shelf life of food. Deep cooling temperatures inhibit the growth of bacteria and mold, preventing food spoilage and deterioration. This is crucial for preserving fresh ingredients, meat, dairy products, and other perishable foods.

[0035] In this embodiment, the refrigerator responds to a deep-cooling command and determines whether the internal temperature has reached the preset start-up temperature. If the internal temperature has reached the preset start-up temperature, the refrigerator determines the deep-cooling speed of the refrigeration fan based on the internal temperature, preset evaporator size information, preset refrigerant information, and the target deep-cooling temperature. The refrigeration fan is then controlled to operate at the deep-cooling speed to bring the internal temperature of the refrigerator to the target deep-cooling temperature. Without increasing the complexity of the refrigerator structure or the cost of deep-cooling, the refrigerator achieves deep-cooling by determining the deep-cooling speed and controlling the refrigeration fan to operate at the deep-cooling speed when the internal temperature reaches the preset start-up temperature, thus bringing the internal temperature of the refrigerator to the target deep-cooling temperature.

[0036] Specifically, the following provides a detailed explanation of each step:

[0037] Step 101: In response to the deep cooling command, determine whether the internal temperature of the refrigerator has reached the preset start-up temperature;

[0038] In this step, the refrigerator responds to the user's deep-cool command. It uses a pre-set temperature sensor to obtain the current internal temperature and compares it to the preset start-up temperature to determine if the internal temperature has reached the preset start-up temperature. It's understood that deep-cooling is typically applied to the freezer compartment to achieve a lower temperature for food storage. Therefore, the pre-set temperature sensor is usually located in the freezer compartment, and the obtained internal temperature is the temperature inside the freezer. The preset start-up temperature is the temperature at which the refrigerator stops cooling after the cooling system starts and returns to the set temperature. This temperature is also called the "hysteresis temperature" or "temperature control deviation."

[0039] Furthermore, if the refrigerator determines that the internal temperature has not reached the preset start-up temperature, it controls the freezer fan to operate at a preset first or second preset speed to bring the internal temperature to the preset start-up temperature, thereby performing deep cooling. If the refrigerator determines that the internal temperature has reached the preset start-up temperature, it determines the deep cooling speed of the freezer fan and controls it to operate at that speed to bring the internal temperature to the target deep cooling temperature.

[0040] Step 102: If the internal temperature of the refrigerator reaches the preset start-up temperature, then the deep-cold rotation speed of the refrigeration fan is determined based on the internal temperature of the refrigerator, the preset evaporator size information, the preset refrigerant information and the target deep-cold temperature.

[0041] In this step, if the refrigerator determines that the internal temperature has reached the preset start-up temperature, it obtains the preset evaporator size information and preset refrigerant information, and acquires the target deep-cooling temperature corresponding to the deep-cooling command. Then, based on the refrigerator's internal temperature, the preset evaporator size information, the preset refrigerant information, and the target deep-cooling temperature, it determines the deep-cooling fan speed. It should be noted that the evaporator size information includes the evaporator's pipe length and radius, and the preset refrigerant information includes the type and physical properties of the refrigerant inside the refrigerator.

[0042] Specifically, step 102 includes:

[0043] Step 1021: Obtain the target evaporation temperature of the evaporator corresponding to the target cryogenic temperature and the target flow rate of the refrigerant in the evaporator, as well as the evaporator pipe radius in the preset evaporator size information;

[0044] In this step, after determining the target deep-cold temperature corresponding to the deep-cold command, the refrigerator obtains the target evaporation temperature of the evaporator and the target refrigerant flow rate in the evaporator based on the target deep-cold temperature. The refrigerator also obtains the evaporator pipe radius from the preset evaporator size information. Specifically, the refrigerator pre-sets a first mapping relationship between the deep-cold temperature and the evaporator evaporation temperature, and a second mapping relationship between the deep-cold temperature and the refrigerant flow rate. Based on the determined target deep-cold temperature, the refrigerator determines the evaporator evaporation temperature corresponding to the target deep-cold temperature in the first mapping relationship and sets this evaporation temperature as the target evaporation temperature. Based on the determined target deep-cold temperature, the refrigerator determines the refrigerant flow rate corresponding to the target deep-cold temperature in the second mapping relationship and sets this flow rate as the target refrigerant flow rate.

[0045] Step 1022: Determine the refrigerant density and refrigerant viscosity based on the refrigerator internal temperature, preset refrigerant information, and preset mapping relationship;

[0046] In this step, the refrigerator has a pre-set mapping relationship between the density and viscosity of different types of refrigerants and the internal temperature. The refrigerator first determines the type of refrigerant based on the preset refrigerant information, then determines the corresponding preset mapping relationship based on the type of refrigerant, and finally determines the refrigerant density and viscosity based on the internal temperature and the preset mapping relationship. It is understandable that in a refrigeration system, the refrigerant exists in the evaporator in fluid form, and changes in the internal temperature of the refrigerator affect the physical properties of the fluid, such as density and viscosity; that is, the refrigerant has different densities and viscosities at different internal temperatures.

[0047] Step 1023: Determine the cryogenic speed of the refrigeration fan based on the target cryogenic temperature, the target evaporation temperature, the target flow rate, the evaporator pipe radius, the refrigerant density, and the refrigerant viscosity.

[0048] In this step, the refrigerator calculates the viscous resistance of the refrigerant flow in the evaporator based on the target evaporation temperature, target refrigerant flow rate, evaporator pipe radius, refrigerant density, and refrigerant viscosity. Then, based on the target cryogenic temperature and viscous resistance, the refrigerator determines the cryogenic speed of the refrigeration fan. It should be noted that temperature changes affect fluid viscosity. Generally, increasing temperature decreases fluid viscosity, which reduces the viscous resistance between the fluid and the pipe wall; conversely, decreasing temperature increases fluid viscosity, which increases the viscous resistance between the fluid and the pipe wall.

[0049] Further, step 1023 includes:

[0050] Step 10231: Calculate the target flow rate of the refrigerant based on the target flow rate, the evaporator pipe radius, and the refrigerant density;

[0051] In this step, the refrigerator calculates the target flow velocity of the refrigerant in the evaporator pipe based on the target flow rate of the refrigerant, the radius of the evaporator pipe, and the refrigerant density. Specifically, the formula for calculating the target flow velocity of the refrigerant in the evaporator pipe is as follows:

[0052]

[0053] Where V is the target flow velocity of the refrigerant in the evaporator pipe, M is the target flow rate of the refrigerant, r is the radius of the evaporator pipe, and ρ is the density of the refrigerant.

[0054] Step 10232: Calculate the viscous resistance of the refrigerant flowing in the evaporator based on the target flow velocity, the target evaporation temperature, the evaporator pipe radius, the refrigerant viscosity, and the refrigerant density;

[0055] In this step, the refrigerator calculates the viscous resistance of the refrigerant flow in the evaporator based on the target flow velocity, target evaporation temperature, refrigerant viscosity, and refrigerant density in the evaporator pipes. It is understood that various components in the refrigerator impede the flow of the fluid refrigerant, and the refrigerant itself also exerts resistance, generating resistance. The impediment of each component can be estimated by considering pipe length, diameter, and pipe wall friction. The impediment of the refrigerant can be estimated by considering factors such as evaporation temperature and refrigerant properties. However, while factors such as pipe length, diameter, and pipe wall friction are constant in the refrigerator, factors such as evaporation temperature and refrigerant properties change. Therefore, to accurately calculate the resistance generated by each component in the refrigerator to the flow of the fluid refrigerant, it is necessary to calculate the viscous resistance of the refrigerant flow in the evaporator. Specifically, the formula for calculating the viscous resistance of the refrigerant flow in the evaporator is as follows:

[0056]

[0057] Where F is the viscous resistance of the refrigerant flow in the evaporator, T is the target evaporation temperature, μ is the refrigerant viscosity, V is the target flow velocity of the refrigerant in the evaporator pipe, r is the radius of the evaporator pipe, and ρ is the refrigerant density.

[0058] Step 10233: Determine the cryogenic speed of the refrigeration fan based on the target cryogenic temperature, the viscous resistance, and the preset flow resistance.

[0059] In this step, the refrigerator calculates the corresponding fan pressure for the refrigeration fan based on the target cryogenic temperature, viscous resistance, and preset flow resistance. Then, based on the fan pressure and a preset refrigeration fan performance curve, it determines the cryogenic speed of the refrigeration fan. It should be noted that fan pressure refers to the pressure exerted on the evaporator surface by the airflow generated by the refrigeration fan. The refrigeration fan generates airflow to push the refrigerant into the evaporator for cooling. During this process, the airflow generated by the fan generates a certain pressure, which is used to push the refrigerant through the evaporator and overcome system resistance. The refrigeration fan performance curve includes the relationship between fan pressure and fan speed. After determining the corresponding fan pressure, the refrigerator looks up the corresponding fan speed in the refrigeration fan performance curve based on the fan pressure and determines this fan speed as the cryogenic speed of the refrigeration fan.

[0060] Further, step 10233 includes:

[0061] Step 102331: Determine the total resistance to the flow of the refrigerant in the evaporator based on the viscous resistance and the preset flow resistance;

[0062] In this step, the refrigerator determines the total resistance to refrigerant flow in the evaporator based on the viscous resistance and the preset flow resistance. The preset flow resistance is generated by the obstruction of various components within the refrigerator and can be estimated by considering factors such as pipe length, diameter, and pipe wall friction. These factors are constant within the refrigerator, so the preset flow resistance can be pre-set. The viscous resistance is generated by the obstruction of the refrigerant itself and can be estimated by considering factors such as evaporation temperature and refrigerant characteristics. These factors can change, so adding the viscous resistance and the preset flow resistance yields the total resistance to refrigerant flow in the evaporator.

[0063] Step 102332: Determine the cooling capacity based on the target cryogenic temperature and the internal temperature of the refrigerator;

[0064] In this step, the refrigerator calculates the temperature difference between the target deep-freeze temperature and the internal temperature of the refrigerator, and determines the cooling capacity based on the temperature difference and the volume of the freezer compartment in the refrigerator.

[0065] Step 102333: Determine the cryogenic speed of the refrigeration fan based on the cooling capacity, the total resistance, the preset air volume and preset static pressure corresponding to the refrigeration fan.

[0066] In this step, the refrigerator calculates the corresponding fan pressure for the refrigeration fan based on the cooling capacity, total resistance, preset airflow, and preset static pressure of the refrigeration fan. Then, based on the fan pressure and the preset refrigeration fan performance curve, the deep-cooling speed of the refrigeration fan is determined. It's understood that the preset airflow and preset static pressure are performance parameters of the refrigeration fan, which can be found in the refrigeration fan's product manual or through experimental measurements. Specifically, the formula for calculating the corresponding fan pressure is as follows:

[0067] P = f + F(T / S) 2

[0068] Where P is the fan pressure corresponding to the chiller fan, f is the total resistance, F is the preset static pressure corresponding to the chiller fan, T is the cooling capacity, and S is the preset air volume corresponding to the chiller fan;

[0069] After determining the fan pressure corresponding to the refrigeration fan, the refrigerator finds the corresponding fan speed based on the relationship between fan pressure and fan speed in the refrigeration fan performance curve, and determines the fan speed as the deep-cooling speed of the refrigeration fan.

[0070] Step 103: Control the refrigeration fan to operate at the deep-cold speed so that the internal temperature of the refrigerator reaches the target deep-cold temperature.

[0071] In this step, after determining the deep-cooling speed of the freezer fan, the refrigerator controls the freezer fan to operate at the deep-cooling speed to bring the internal temperature of the refrigerator to the target deep-cooling temperature. Once the internal temperature of the refrigerator reaches the target deep-cooling temperature, the refrigerator continues to control the freezer fan to operate at the deep-cooling speed until a deep-cooling end command is detected, at which point the deep-cooling process stops. Furthermore, while controlling the freezer fan to operate at the deep-cooling speed, the refrigerator also controls the compressor to operate at its maximum speed to increase the speed at which the internal temperature of the refrigerator reaches the target deep-cooling temperature.

[0072] Specifically, step 103 includes:

[0073] Step 1031: Obtain the target input voltage corresponding to the cryogenic rotation speed;

[0074] Step 1032: Generate a voltage signal based on the target input voltage, and input the voltage signal into the refrigeration fan to control the refrigeration fan to operate at the deep-cold speed so that the internal temperature of the refrigerator reaches the target deep-cold temperature.

[0075] In steps 1031 to 1032, the refrigerator pre-sets the correspondence between rotation speed and input voltage. After determining the deep-cooling rotation speed, the refrigerator can determine the corresponding target input voltage based on the correspondence between rotation speed and input voltage. A voltage signal is generated based on the target input voltage and input to the refrigeration fan to control the refrigeration fan to operate at the deep-cooling rotation speed so that the internal temperature of the refrigerator reaches the target deep-cooling temperature.

[0076] In this embodiment, the refrigerator responds to a deep-cooling command and determines whether the internal temperature has reached the preset start-up temperature. If the internal temperature has reached the preset start-up temperature, the refrigerator determines the deep-cooling speed of the refrigeration fan based on the internal temperature, preset evaporator size information, preset refrigerant information, and the target deep-cooling temperature. The refrigeration fan is then controlled to operate at the deep-cooling speed to bring the internal temperature of the refrigerator to the target deep-cooling temperature. Without increasing the complexity of the refrigerator structure or the cost of deep-cooling, the refrigerator achieves deep-cooling by determining the deep-cooling speed and controlling the refrigeration fan to operate at the deep-cooling speed when the internal temperature reaches the preset start-up temperature, thus bringing the internal temperature of the refrigerator to the target deep-cooling temperature.

[0077] Further, refer to Figure 2 The second embodiment of this application is proposed. The difference between the second embodiment and the first embodiment is that, after determining whether the internal temperature of the refrigerator has reached the preset start-up temperature in response to the deep-cooling command, it further includes:

[0078] Step a: If the internal temperature of the refrigerator does not reach the preset start-up temperature, calculate the temperature difference between the internal temperature of the refrigerator and the preset start-up temperature.

[0079] Step b: Compare the temperature difference with a preset temperature difference threshold;

[0080] Step c: If the temperature difference is greater than the preset temperature difference threshold, then control the refrigeration fan to operate at a first preset speed to reduce the internal temperature of the refrigerator.

[0081] In this embodiment, the refrigerator compares the internal temperature of the refrigerator with the preset start-up temperature. If it is determined that the internal temperature of the refrigerator has not reached the preset start-up temperature, the temperature difference between the internal temperature of the refrigerator and the preset start-up temperature is calculated and compared with the preset temperature difference threshold. If it is determined that the temperature difference is greater than the preset temperature difference threshold, it is determined that rapid cooling is required at this time. The refrigeration fan is controlled to run at the first preset speed, and the compressor is controlled to run at the maximum speed to reduce the internal temperature of the refrigerator.

[0082] It should be noted that the preset temperature difference threshold is the fluctuation range of the preset start-up temperature. For example, if the preset start-up temperature is 3 degrees Celsius and the fluctuation range is 1 degree Celsius, then the preset temperature difference threshold is 2 degrees Celsius. When the temperature difference is determined to be greater than the preset temperature difference threshold, it means that the difference between the refrigerator's internal temperature and the preset start-up temperature is large, and the internal temperature of the refrigerator needs to be quickly cooled down to the preset start-up temperature to facilitate subsequent deep cooling.

[0083] In this embodiment, when the internal temperature of the refrigerator is determined to be below the preset start-up temperature, the refrigeration fan is controlled to operate at a first preset speed to increase the cooling speed, which facilitates deep cooling and helps to achieve deep cooling without increasing the complexity of the refrigerator structure or the cost of deep cooling.

[0084] Further, refer to Figure 3 The third embodiment of this application is proposed. The difference between the third embodiment and the first and second embodiments is that, after comparing the temperature difference with a preset temperature difference threshold, it includes:

[0085] Step d: If the temperature difference is not greater than the preset temperature difference threshold, then control the refrigeration fan to operate at the second preset speed so that the internal temperature of the refrigerator is maintained within the temperature fluctuation range corresponding to the preset start-up temperature.

[0086] Step e: Calculate the duration for which the internal temperature of the refrigerator remains within the temperature fluctuation range. If the duration reaches a preset duration threshold, then determine that the internal temperature of the refrigerator has reached the preset start-up temperature.

[0087] In this embodiment, the refrigerator compares its internal temperature with a preset start-up temperature. If the internal temperature has not reached the preset start-up temperature, the refrigerator calculates the temperature difference between the internal temperature and the preset start-up temperature, and compares this difference with a preset temperature difference threshold. If the temperature difference is not greater than the preset temperature difference threshold, the refrigerator's internal temperature is considered close to the preset start-up temperature. The refrigerator then controls the freezer fan to operate at a second preset speed, causing the internal temperature to continuously decrease, ultimately maintaining the internal temperature within the temperature fluctuation range corresponding to the preset start-up temperature. The refrigerator records the duration for which the internal temperature remains within the temperature fluctuation range. If the duration reaches a preset duration threshold, the refrigerator's internal temperature is considered to have reached the preset start-up temperature. The refrigerator then determines the deep-cooling speed of the freezer fan and controls it to operate at the deep-cooling speed to bring the internal temperature to the target deep-cooling temperature.

[0088] In this embodiment, when the temperature difference between the internal temperature and the preset start-up temperature is determined to be no greater than a preset temperature difference threshold, the refrigerator controls the refrigeration fan to operate at a second preset speed, so that the internal temperature of the refrigerator is maintained within the temperature fluctuation range for a duration that reaches a preset duration threshold, which facilitates deep cooling and helps to achieve deep cooling without increasing the complexity of the refrigerator structure or the cost of deep cooling.

[0089] In specific implementation, refer to Figure 4In response to a deep-cooling command, the refrigerator starts its timer, controlling both the compressor and the refrigeration fan to operate at their highest speeds. These compressors and fans will not stop for a preset time, aiming to provide maximum cooling capacity. The refrigerator compares the internal temperature with the start-up temperature to determine the cooling demand of the freezer compartment. Based on different cooling stages, different refrigeration fan speeds are selected, specifically in three scenarios: First, if the internal temperature is higher than the start-up temperature, the refrigerator compartment is considered to require more cooling, and the refrigerator is in a rapid cooling phase. The refrigeration fan operates at the first preset speed, causing the internal temperature to drop rapidly. Second, if the internal temperature is not higher than the start-up temperature, the refrigerator compartment temperature is close to a stable state. The refrigerator is still in the cooling phase, but the cooling demand is relatively lower, and the refrigeration fan operates at the second preset speed. Third, if the refrigerator is not in the cooling phase, the internal temperature is at the start-up temperature. If the temperature remains within the preset operating temperature range for a set duration threshold, the refrigerator determines the deep-cooling fan speed. The fan operates at the deep-cooling speed, with the first preset speed > the second preset speed > the deep-cooling speed. This is because the refrigerator compartment's air duct is farther from the evaporator, requiring higher air pressure for a faster temperature drop. Higher airflow also results in faster cooling. However, a lower fan speed leads to a lower evaporator temperature, thus achieving a lower deep-cooling temperature in the freezer compartment. This fan speed selection ensures rapid cooling when the refrigerator requires more cooling capacity, while providing normal cooling when the temperature is within the controlled fluctuation range. During shutdown, the lowest possible fan speed is used, such as 12V for a 7-12V adjustable fan, 9V for the second speed, and 7V for the third speed. When the timer exceeds the preset time or the refrigerator receives a stop deep-cooling command, the refrigerator exits deep-cooling mode.

[0090] This embodiment also provides a refrigerator deep-cold control device, which can be integrated into devices such as refrigerators and dryers. Figure 5 As shown, the refrigerator's deep-freezing control device may include:

[0091] The judgment unit 1001 is used to respond to the deep cooling command and determine whether the internal temperature of the refrigerator has reached the preset start-up temperature.

[0092] The determining unit 1002 is used to determine the deep-cold rotation speed of the refrigeration fan based on the refrigerator's internal temperature, preset evaporator size information, preset refrigerant information, and target deep-cold temperature if the refrigerator's internal temperature reaches the preset start-up temperature.

[0093] Control unit 1003 is used to control the refrigeration fan to operate at the deep-cold speed so that the internal temperature of the refrigerator reaches the target deep-cold temperature.

[0094] In an optional example, the determining unit is also used for:

[0095] Obtain the target evaporation temperature of the evaporator corresponding to the target cryogenic temperature and the target flow rate of the refrigerant in the evaporator, as well as the evaporator pipe radius in the preset evaporator size information;

[0096] Based on the refrigerator's internal temperature, preset refrigerant information, and preset mapping relationship, the refrigerant density and refrigerant viscosity are determined;

[0097] The cryogenic rotation speed of the refrigeration fan is determined based on the target cryogenic temperature, the target evaporation temperature, the target flow rate, the evaporator pipe radius, the refrigerant density, and the refrigerant viscosity.

[0098] In an optional example, determining the cell is also used for:

[0099] The target flow rate of the refrigerant is calculated based on the target flow rate, the evaporator pipe radius, and the refrigerant density.

[0100] The viscous resistance of the refrigerant flowing in the evaporator is calculated based on the target flow velocity, the target evaporation temperature, the evaporator pipe radius, the refrigerant viscosity, and the refrigerant density.

[0101] The cryogenic speed of the refrigeration fan is determined based on the target cryogenic temperature, the viscous resistance, and the preset flow resistance.

[0102] In an optional example, determining the cell is also used for:

[0103] The total resistance to the refrigerant flow in the evaporator is determined based on the viscous resistance and the preset flow resistance.

[0104] The cooling capacity is determined based on the target cryogenic temperature and the internal temperature of the refrigerator.

[0105] The cryogenic speed of the refrigeration fan is determined based on the cooling capacity, the total resistance, the preset air volume and preset static pressure corresponding to the refrigeration fan.

[0106] In an optional example, the control unit is also used for:

[0107] Obtain the target input voltage corresponding to the cryogenic rotation speed;

[0108] A voltage signal is generated based on the target input voltage, and the voltage signal is input to the refrigeration fan to control the refrigeration fan to operate at the deep-cold speed so that the internal temperature of the refrigerator reaches the target deep-cold temperature.

[0109] In an optional example, the refrigerator cryogenic control unit also includes an analysis unit, which is used for:

[0110] If the internal temperature of the refrigerator does not reach the preset start-up temperature, then calculate the temperature difference between the internal temperature of the refrigerator and the preset start-up temperature;

[0111] The temperature difference is compared with a preset temperature difference threshold.

[0112] If the temperature difference is greater than the preset temperature difference threshold, the refrigeration fan is controlled to operate at a first preset speed to reduce the internal temperature of the refrigerator.

[0113] In an optional example, the analysis unit is also used for:

[0114] If the temperature difference is not greater than the preset temperature difference threshold, the refrigeration fan is controlled to operate at a second preset speed so that the internal temperature of the refrigerator is maintained within the temperature fluctuation range corresponding to the preset start-up temperature.

[0115] The duration for which the internal temperature of the refrigerator remains within the temperature fluctuation range is recorded. If the duration reaches a preset duration threshold, the internal temperature of the refrigerator is determined to have reached the preset start-up temperature.

[0116] In this embodiment, in response to a deep-cooling command, it determines whether the refrigerator's internal temperature has reached the preset start-up temperature. If the internal temperature has reached the preset start-up temperature, the deep-cooling speed of the refrigeration fan is determined based on the internal temperature, preset evaporator size information, preset refrigerant information, and the target deep-cooling temperature. The refrigeration fan is then controlled to operate at the specified deep-cooling speed to bring the refrigerator's internal temperature to the target deep-cooling temperature. Without increasing the complexity of the refrigerator structure or the cost of deep-cooling, by determining the deep-cooling speed and controlling the refrigeration fan to operate at the deep-cooling speed when the internal temperature reaches the preset start-up temperature, deep-cooling is achieved by controlling only the speed of the refrigeration fan.

[0117] Accordingly, embodiments of this application also provide a refrigerator, such as Figure 6 As shown, Figure 6 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this application. The refrigerator 1100 includes a processor 1101 with one or more processing cores, a memory 1102 with one or more computer-readable storage media, and a computer program stored on the memory 1102 and executable on the processor. The processor 1101 and the memory 1102 are electrically connected. Those skilled in the art will understand that the refrigerator structure shown in the figure does not constitute a limitation on the refrigerator, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0118] The processor 1101 is the control center of the refrigerator 1100. It connects to various parts of the refrigerator 1100 via various interfaces and lines. By running or loading software programs and / or units stored in the memory 1102, and by calling data stored in the memory 1102, it executes various functions of the refrigerator 1100 and processes data, thereby providing overall monitoring of the refrigerator 1100. The processor 1101 can be a CPU, GPU, network processor (NP), etc., and can implement or execute the methods, steps, and logic diagrams disclosed in the embodiments of this application.

[0119] In this embodiment of the application, the processor 1101 in the refrigerator 1100 will load the instructions corresponding to the processes of one or more application programs into the memory 1102 according to the following steps, and the processor 1101 will run the application programs stored in the memory 1102 to execute any of the refrigerator deep-cooling control methods provided in this embodiment of the application.

[0120] Optional, such as Figure 6 As shown, the refrigerator 1100 also includes: a touch screen display 1103, an radio frequency circuit 1104, an audio circuit 1105, an input unit 1106, and a power supply 1107. The processor 1101 is electrically connected to the touch screen display 1103, the radio frequency circuit 1104, the audio circuit 1105, the input unit 1106, and the power supply 1107. Those skilled in the art will understand that... Figure 6 The refrigerator structure shown does not constitute a limitation on the refrigerator and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0121] The touch display screen 1103 can be used to display a graphical user interface (GUI) and receive operation commands generated by the user interacting with the GUI. The touch display screen 1103 may include a display panel and a touch panel. The display panel can be used to display information input by the user or information provided to the user, as well as various GUIs of the refrigerator. These GUIs can be composed of graphics, text, icons, video, and any combination thereof. Optionally, the display panel can be configured using a liquid crystal display (LCD), organic light-emitting diode (OLED), or other similar technologies. The touch panel can be used to collect touch operations performed by the user on or near it (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near the touch panel), and generate corresponding operation commands, which then execute the corresponding program. Optionally, the touch panel may include a touch detection device and a touch controller. The touch detection device detects the user's touch location and the signal generated by the touch operation, transmitting the signal to the touch controller. The touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends it to the processor 1101. It can also receive and execute commands from the processor 1101. The touch panel can cover the display panel. When the touch panel detects a touch operation on or near it, it transmits the information to the processor 1101 to determine the type of touch event. Subsequently, the processor 1101 provides corresponding visual output on the display panel based on the type of touch event. In this embodiment, the touch panel and the display panel can be integrated into the touch display screen 1103 to achieve input and output functions. However, in some embodiments, the touch panel and the touch display screen 1103 can be implemented as two independent components to achieve input and output functions. That is, the touch display screen 1103 can also be used as part of the input unit 1106 to achieve input functions.

[0122] The radio frequency circuit 1104 can be used to transmit and receive radio frequency signals to establish wireless communication with network devices or other refrigerators, and to transmit and receive signals with network devices or other refrigerators.

[0123] Audio circuit 1105 can be used to provide an audio interface between the user and the refrigerator via a speaker and a microphone. Audio circuit 1105 can convert received audio data into electrical signals and transmit them to the speaker, where the speaker converts them into sound signals for output. Conversely, the microphone converts collected sound signals into electrical signals, which are then received by audio circuit 1105, converted back into audio data, and then processed by processor 1101 before being transmitted via radio frequency circuit 1104 to, for example, another refrigerator, or output to memory 1102 for further processing. Audio circuit 1105 may also include an earphone jack to provide communication between external headphones and the refrigerator.

[0124] The input unit 1106 can be used to receive input numbers, characters, or user characteristic information (such as fingerprints, iris, facial information, etc.), and to generate keyboard, mouse, joystick, optical, or trackball signal inputs related to user settings and function control.

[0125] Power supply 1107 is used to supply power to the various components of refrigerator 1100. Optionally, power supply 1107 can be logically connected to processor 1101 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. Power supply 1107 may also include one or more DC or AC power supplies, recharging systems, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0126] although Figure 6 As not shown in the diagram, the refrigerator 1100 may also include a camera, sensor, wireless fidelity module, Bluetooth module, etc., which will not be described in detail here.

[0127] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0128] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by instructions, or by instructions controlling related hardware. These instructions can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0129] Therefore, embodiments of this application provide a computer-readable storage medium storing a plurality of computer programs that can be loaded by a processor to execute any of the refrigerator deep-cooling control methods provided in embodiments of this application.

[0130] The computer-readable storage medium may include: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0131] Since the computer program stored in the computer-readable storage medium can execute any of the refrigerator deep-cooling control methods provided in the embodiments of this application, the beneficial effects that any of the refrigerator deep-cooling control methods provided in the embodiments of this application can achieve can be realized, as detailed in the preceding embodiments, and will not be repeated here.

[0132] According to one aspect of this application, a computer program product or computer program is also provided, comprising computer instructions stored in a computer-readable storage medium. A refrigerator's processor reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the refrigerator to perform the methods provided in the various optional implementations of the above embodiments.

[0133] In the above embodiments of the refrigerator cryogenic control device, computer-readable storage medium, refrigerator, and computer program product, the descriptions of each embodiment have different focuses. Parts not described in detail in a particular embodiment can be referred to in the relevant descriptions of other embodiments. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes and beneficial effects of the refrigerator cryogenic control device, computer-readable storage medium, computer program product, refrigerator, and their corresponding units described above can be referred to the description of the refrigerator cryogenic control method in the above embodiments, and will not be repeated here.

[0134] The foregoing has provided a detailed description of a refrigerator deep-cold control method, apparatus, refrigerator, computer-readable storage medium, and computer program product provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for controlling deep cooling in a refrigerator, characterized in that, The refrigerator deep-cryogenic control method is applied to a refrigerator, and the method includes: In response to a deep-cooling command, determine whether the temperature in the freezer compartment has reached the preset start-up temperature; If the temperature in the freezer compartment reaches the preset start-up temperature, the cryogenic speed of the refrigeration fan is determined based on the temperature in the freezer compartment, preset evaporator size information, preset refrigerant information, and target cryogenic temperature. This includes: obtaining the target evaporation temperature of the evaporator corresponding to the target cryogenic temperature and the target flow rate of the refrigerant in the evaporator, as well as obtaining the evaporator pipe radius in the preset evaporator size information; determining the refrigerant density and refrigerant viscosity according to the temperature in the freezer compartment, preset refrigerant information, and preset mapping relationship; and determining the cryogenic speed of the refrigeration fan according to the target cryogenic temperature, the target evaporation temperature, the target flow rate, the evaporator pipe radius, the refrigerant density, and the refrigerant viscosity. The refrigeration fan is controlled to operate at the cryogenic speed so that the temperature in the refrigeration chamber reaches the target cryogenic temperature.

2. The refrigerator deep-cold control method according to claim 1, characterized in that, The step of determining the cryogenic rotation speed of the refrigeration fan based on the target cryogenic temperature, the target evaporation temperature, the target flow rate, the evaporator pipe radius, the refrigerant density, and the refrigerant viscosity includes: The target flow rate of the refrigerant is calculated based on the target flow rate, the evaporator pipe radius, and the refrigerant density. The viscous resistance of the refrigerant flowing in the evaporator is calculated based on the target flow velocity, the target evaporation temperature, the evaporator pipe radius, the refrigerant viscosity, and the refrigerant density. The cryogenic speed of the refrigeration fan is determined based on the target cryogenic temperature, the viscous resistance, and the preset flow resistance.

3. The refrigerator deep-cold control method according to claim 2, characterized in that, Determining the cryogenic rotation speed of the refrigeration fan based on the target cryogenic temperature, the viscous resistance, and the preset flow resistance includes: The total resistance to the refrigerant flow in the evaporator is determined based on the viscous resistance and the preset flow resistance. The cooling capacity is determined based on the target cryogenic temperature and the temperature in the freezer compartment. The cryogenic speed of the refrigeration fan is determined based on the cooling capacity, the total resistance, the preset air volume and preset static pressure corresponding to the refrigeration fan.

4. The refrigerator deep-cold control method according to claim 1, characterized in that, Controlling the refrigeration fan to operate at the cryogenic speed to bring the temperature in the refrigeration chamber to the target cryogenic temperature includes: Obtain the target input voltage corresponding to the cryogenic rotation speed; A voltage signal is generated based on the target input voltage, and the voltage signal is input to the refrigeration fan to control the refrigeration fan to operate at the deep cryogenic speed so that the temperature in the refrigeration chamber reaches the target deep cryogenic temperature.

5. The refrigerator deep-cold control method according to claim 1, characterized in that, After responding to the cryogenic command and determining whether the temperature in the freezer compartment has reached the preset start-up temperature, the method further includes: If the temperature in the freezer compartment does not reach the preset start-up temperature, then calculate the temperature difference between the temperature in the freezer compartment and the preset start-up temperature; The temperature difference is compared with a preset temperature difference threshold. If the temperature difference is greater than the preset temperature difference threshold, the refrigeration fan is controlled to operate at a first preset speed to reduce the temperature in the refrigeration compartment.

6. The refrigerator deep-cryogenic control method according to claim 5, characterized in that, The step of comparing the temperature difference with a preset temperature difference threshold includes: If the temperature difference is not greater than the preset temperature difference threshold, the refrigeration fan is controlled to operate at a second preset speed so that the temperature in the refrigeration room is maintained within the temperature fluctuation range corresponding to the preset start-up temperature. The duration for which the temperature in the freezer compartment remains within the temperature fluctuation range is recorded. If the duration reaches a preset duration threshold, the temperature in the freezer compartment is determined to have reached the preset start-up temperature.

7. A refrigerator deep-cold control device, characterized in that, The device includes: The judgment unit is used to respond to the deep-freezing command and determine whether the temperature in the freezer compartment has reached the preset start-up temperature; A determining unit is configured to, if the temperature in the freezer compartment reaches a preset start-up temperature, determine the cryogenic speed of the refrigeration fan based on the temperature in the freezer compartment, preset evaporator size information, preset refrigerant information, and a target cryogenic temperature; including: acquiring the target evaporation temperature of the evaporator corresponding to the target cryogenic temperature and the target flow rate of the refrigerant in the evaporator, and acquiring the evaporator pipe radius in the preset evaporator size information; determining the refrigerant density and refrigerant viscosity according to the temperature in the freezer compartment, the preset refrigerant information, and a preset mapping relationship; and determining the cryogenic speed of the refrigeration fan according to the target cryogenic temperature, the target evaporation temperature, the target flow rate, the evaporator pipe radius, the refrigerant density, and the refrigerant viscosity. The control unit is used to control the refrigeration fan to operate at the cryogenic speed so that the temperature in the refrigeration chamber reaches the target cryogenic temperature.

8. A refrigerator, characterized in that, The system includes a processor and a memory, the memory storing multiple instructions; the processor loads instructions from the memory to perform the steps of the refrigerator deep-cooling control method as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a plurality of instructions adapted for loading by a processor to perform the steps of the refrigerator deep-cooling control method as described in any one of claims 1-6.

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