A method and device for controlling refrigerator operation

Abstract

A control method and device for refrigerator operation, relating to the field of refrigerator control technology. In the method, after determining that a target refrigerator is in a working state, a first internal temperature corresponding to a first time point of the target refrigerator is obtained; the first time point and the first internal temperature are calculated using a heat conduction formula to obtain a first value; when the first value is greater than a second value, it is confirmed that the target refrigerator is in a door-open state; a first closing instruction is sent to an evaporator fan according to the door-open state, and a first duration is obtained; when the first duration is greater than or equal to a preset first duration, a first evaporator temperature corresponding to the evaporator is obtained; when the first evaporator temperature is less than or equal to the preset first temperature, it is confirmed that a second closing instruction is sent to a refrigeration unit, so that the refrigeration unit is closed according to the second closing instruction. The implementation of the technical solution provided by the present application solves the problem of failure of the trigger mechanism of a mechanical switch due to installation deviation, thereby reducing the energy consumption of the refrigerator.

Description

Technical Field

[0001] The present application relates to the field of refrigerator control technology, and in particular to a method and device for controlling the operation of a refrigerator. Background Art

[0002] With the continuous advancement of refrigerator technology, modern commercial refrigerators generally have large capacity and multifunctional characteristics, integrating refrigeration, freezing and fine preservation functions, accurately meeting the diverse needs of food storage. Especially in commercial application environments such as catering services and retail supermarkets, commercial refrigerators effectively ensure the freshness of ingredients and goods with their excellent preservation performance, greatly reducing the economic losses caused by food spoilage.

[0003] In the daily operation of commercial refrigerators, energy saving and consumption reduction has become a focus of attention. In order to ensure that energy-consuming components such as evaporator fans can stop running when not necessary, accurate monitoring of the closed state of the refrigerator door is particularly critical. Traditionally, commercial refrigerators use mechanical or electronic switches to achieve this monitoring function. These switches are carefully installed at key locations on the door edge or door frame so that when the door is closed, the control system is triggered by changes in physical contact, and corresponding energy-saving measures are taken, such as shutting down the evaporator fan. However, if there is a slight deviation in the installation process of the mechanical switch, or the gap between the door and the frame increases due to long-term use, the trigger mechanism of the switch may fail and the door status cannot be accurately sensed, which in turn causes the problem of increased energy consumption of the refrigerator.

[0004] Therefore, there is an urgent need for a refrigerator operation control method and device that can solve the above technical problems. Summary of the invention

[0005] The present application provides a method and device for controlling the operation of a refrigerator, which solves the problem of trigger mechanism failure of a mechanical switch due to installation deviation or long-term wear and tear, thereby reducing the energy consumption of the refrigerator.

[0006] In a first aspect, the present application provides a control method for the operation of a refrigerator, which is applied to a refrigerator controller, and the method includes: after determining that a target refrigerator is in a working state, obtaining a first internal temperature corresponding to the target refrigerator at a first time point; using a heat conduction formula to calculate the first time point and the first internal temperature to obtain a first value; comparing the first value with a second value, the second value is obtained by calculating the target refrigerator at the second time point, and the second time point is earlier than the first time point; when the first value is greater than the second value, confirming that the target refrigerator is in a door-open state; sending a first closing instruction to the evaporator fan according to the door-open state, and obtaining a first duration, the first duration is the duration of the interval between a third time point and a target time point, the third time point is the time point when the evaporator fan is closed according to the first closing instruction, and the target time point is the current time point; when the first duration is greater than or equal to the preset first duration, obtaining a first evaporator temperature corresponding to the evaporator; when the first evaporator temperature is less than or equal to the preset first temperature, confirming that a second closing instruction is sent to the refrigeration unit so that the refrigeration unit is closed according to the second closing instruction.

[0007] By adopting the above technical solution, the first internal temperature of the target refrigerator is obtained, and then the change of the internal temperature of the refrigerator over time is calculated using the heat conduction formula, which can accurately capture the rapid rise of the internal temperature when the refrigerator door is opened (due to the influx of external heat). By comparing the values ​​(first value and second value) calculated at different time points (first time point and second time point), it is possible to accurately determine whether the refrigerator door is open. This dynamic comparison mechanism can reflect the state change of the refrigerator door in real time, avoiding misjudgment or missed judgment caused by long-term wear of the mechanical switch; after confirming that the refrigerator door is open, the evaporator fan can be intelligently turned off to reduce unnecessary energy consumption. At the same time, by monitoring the evaporator temperature and comparing the first duration with the preset duration, it is possible to further decide whether to turn off the refrigeration unit, thereby achieving more refined energy consumption management, so as to reduce the energy consumption of the refrigerator and improve its operating efficiency.

[0008] Optionally, after determining that the target refrigerator is in a working state, the method further includes: in response to the target refrigerator being powered on to complete the operation, obtaining a second internal temperature and a second evaporator temperature; determining whether the second internal temperature is less than or equal to a preset internal temperature, and whether the second evaporator temperature is less than or equal to a preset second temperature; when the second internal temperature is greater than the preset internal temperature, and the second evaporator temperature is greater than the preset second temperature, confirming that a first start instruction is sent to the evaporator fan; if it is determined that the evaporator fan is in an on state, controlling the refrigeration unit to start; obtaining a second time duration, which is the total time duration of continuous operation of the refrigeration unit; determining whether the second time duration is less than or equal to a preset defrost time duration; when the second time duration is less than or equal to the preset defrost time duration, confirming that a third internal temperature and a third evaporator temperature are obtained; when the third internal temperature is less than or equal to the preset internal temperature, and the third evaporator temperature is less than or equal to the preset second temperature, confirming that the target refrigerator is in a working state.

[0009] By adopting the above technical solution, after the target refrigerator is powered on, the second internal temperature inside the refrigerator and the second evaporator temperature of the evaporator are obtained. By comparing these temperatures with the preset thresholds, it can be intelligently determined whether the evaporator fan and the refrigeration unit need to be started. This temperature-based intelligent startup strategy helps to reduce unnecessary energy consumption. When it is confirmed that refrigeration is required, the evaporator fan is turned on first, and then the refrigeration unit is started. This sequential control can ensure a smoother refrigeration process and avoid the impact of instantaneous high-power startup on the power grid and equipment. By monitoring the total continuous working time (the second time) of the refrigeration unit and comparing it with the preset defrost time, it can be intelligently determined whether it is necessary to enter the defrost mode. Based on the intelligent control of the working status of the target refrigerator, it can be ensured that the temperature inside the refrigerator is always maintained at an appropriate level. Optionally, after determining whether the second time length is less than or equal to the preset defrost time length, the method further includes: when the second time length is greater than the preset defrost time length, confirming that a defrost instruction is sent to the defrost device so that the defrost device performs a defrost operation on the target refrigerator according to the defrost instruction.

[0010] By adopting the above technical solution, when the second time duration exceeds the preset defrost time duration, a defrost command is sent to the defrost device. Running the refrigeration unit for a long time without defrosting will cause ice to form on the evaporator surface, affecting the refrigeration effect. By setting the defrost time duration and automatically starting the defrost operation, the evaporator can be effectively prevented from freezing and the refrigeration efficiency of the refrigerator can be maintained.

[0011] Optionally, before comparing the first value with the second value, the second value needs to be obtained, specifically including: determining that the target refrigerator is in a door-closed state, and obtaining a fourth internal temperature of the target refrigerator corresponding to the second time point; using a heat conduction formula to calculate the second time point and the fourth internal temperature to obtain the second value.

[0012] By adopting the above technical solution, when it is determined that the target refrigerator is in a door-closed state, it can be ensured that when obtaining the internal temperature, the internal environment of the refrigerator is closed and there is no interference from external heat. The internal temperature of the refrigerator is then calculated using the heat conduction formula. When the refrigerator door is closed, this calculation can more accurately reflect the heat conduction process inside the refrigerator, thereby obtaining a more reliable second value.

[0013] Optionally, after comparing the first value with the second value, the method also includes: when the first value is less than the second value, confirming that the target refrigerator is in a door closed state; sending a second opening instruction to the evaporator fan according to the door closed state; if it is determined that the evaporator fan is in an open state, controlling the refrigeration unit to start.

[0014] By using the above technical solution, by comparing the values ​​calculated at two different time points (and a time point where the door state is known), it is possible to accurately determine whether the target refrigerator door is in a closed state. After confirming that the target refrigerator door is closed, the evaporator fan and refrigeration unit are started to avoid unnecessary energy consumption when the door is open. By accurately determining the door state and starting the refrigeration system when it is closed, this fluctuation can be reduced, thereby extending the service life of the refrigerator.

[0015] Optionally, after confirming that the target refrigerator is in a door-closed state when the first value is less than the second value, the method further includes: obtaining a fifth internal temperature corresponding to the target refrigerator at a preset time interval; obtaining the ambient temperature corresponding to the target refrigerator, and determining a preset temperature based on the ambient temperature; judging whether the fifth internal temperature is less than the preset temperature; and when the fifth internal temperature is less than the preset temperature, confirming that the target refrigerator is in a normally closed state.

[0016] By adopting the above technical solution, the fifth internal temperature is obtained at preset intervals, the temperature change inside the refrigerator can be monitored in real time, and the preset temperature is determined according to the ambient temperature, so that the refrigerator can be adjusted according to different environmental conditions. By comparing the fifth internal temperature with the preset temperature, it is possible to accurately determine whether the refrigerator is in a normally closed state. If the target refrigerator door is not closed correctly, the internal temperature will be higher than the preset temperature. By timely detecting and confirming the refrigerator status, energy waste caused by the door not being closed can be avoided.

[0017] Optionally, after determining whether the fifth internal temperature is lower than the preset temperature, the method further includes: when the fifth internal temperature is greater than or equal to the preset temperature, confirming that a third shutdown instruction is sent to the evaporator fan; obtaining a third time duration, the third time duration being the time duration for the evaporator fan to be shut down according to the third shutdown instruction; when the third time duration is greater than the preset second time duration, confirming that the target refrigerator is in an abnormally closed state, sending a fourth shutdown instruction to the refrigeration unit according to the abnormal closed state, and controlling the buzzer to issue an early warning to prompt the user that the target refrigerator is in a cooling leakage state.

[0018] By adopting the above technical solution, when the fifth internal temperature of the target refrigerator is greater than or equal to the preset temperature, it indicates that the target refrigerator may be leaking cold due to reasons such as the door not being tightly closed or the sealing strip being aged. Sending a shutdown command to the evaporator fan and monitoring its shutdown time can further confirm whether the refrigerator is in an abnormally closed state. If the evaporator fan shutdown time exceeds the preset second time, it is confirmed that the refrigerator is in an abnormally closed state, and a shutdown command is immediately sent to the refrigeration unit to prevent energy waste and further aggravation of the cold leakage. At the same time, the buzzer is controlled to issue an early warning, and the user is reminded by sound that the refrigerator is in a cold leakage state, so that the user can take timely measures.

[0019] In a second aspect of the present application, a control device for refrigerator operation is provided, the device is a refrigerator controller, and the refrigerator controller includes an acquisition unit, a processing unit and a sending unit; the acquisition unit, after determining that the target refrigerator is in a working state, acquires a first internal temperature corresponding to the target refrigerator at a first time point; the processing unit, using a heat conduction formula to calculate the first time point and the first internal temperature to obtain a first value; the first value is compared with a second value, the second value is calculated for the target refrigerator at the second time point, and the second time point is earlier than the first time point; when the first value is greater than the second value, it is confirmed that the target refrigerator is in a door open state; according to the door open state, a first closing instruction is sent to the evaporator fan, and a first duration is acquired, the first duration is the duration of the interval between a third time point and a target time point, the third time point is the time point when the evaporator fan is closed according to the first closing instruction, and the target time point is the current time point; when the first duration is greater than or equal to the preset first duration, the first evaporator temperature corresponding to the evaporator is acquired; the sending unit, when the first evaporator temperature is less than or equal to the preset first temperature, confirms that a second closing instruction is sent to the refrigeration unit so that the refrigeration unit is closed according to the second closing instruction.

[0020] Optionally, the acquisition unit is used to acquire the second internal temperature and the second evaporator temperature in response to the target refrigerator being powered on to complete the operation; the processing unit is used to determine whether the second internal temperature is less than or equal to the preset internal temperature, and whether the second evaporator temperature is less than or equal to the preset second temperature; the sending unit is used to confirm that a first start instruction is sent to the evaporator fan when the second internal temperature is greater than the preset internal temperature, and the second evaporator temperature is greater than the preset second temperature; the processing unit is used to control the refrigeration unit to start if it is determined that the evaporator fan is in the on state; the acquisition unit is used to acquire a second duration, which is the total duration of continuous operation of the refrigeration unit; the processing unit is used to determine whether the second duration is less than or equal to the preset defrost duration; when the second duration is less than or equal to the preset defrost duration, confirm the acquisition of the third internal temperature and the third evaporator temperature; when the third internal temperature is less than or equal to the preset internal temperature, and the third evaporator temperature is less than or equal to the preset second temperature, confirm that the target refrigerator is in working condition.

[0021] Optionally, the sending unit is used to confirm sending a defrost instruction to the defrost device when the second time period is greater than a preset defrost time period, so that the defrost device performs a defrost operation on the target refrigerator according to the defrost instruction.

[0022] Optionally, the acquisition unit is used to determine that the target refrigerator is in a door-closed state, and obtain the fourth internal temperature of the target refrigerator corresponding to the second time point; the processing unit is used to calculate the second time point and the fourth internal temperature using a heat conduction formula to obtain a second value.

[0023] Optionally, the processing unit is used to confirm that the target refrigerator is in a door closed state when the first value is less than the second value; send a second opening instruction to the evaporator fan according to the door closed state; if it is determined that the evaporator fan is in the open state, control the refrigeration unit to start.

[0024] Optionally, the acquisition unit is used to obtain the fifth internal temperature corresponding to the target refrigerator at preset time intervals; obtain the ambient temperature corresponding to the target refrigerator, and determine the preset temperature based on the ambient temperature; the processing unit is used to determine whether the fifth internal temperature is lower than the preset temperature; when the fifth internal temperature is lower than the preset temperature, confirm that the target refrigerator is in a normally closed state.

[0025] Optionally, the sending unit is used to confirm that a third closing instruction is sent to the evaporator fan when the fifth internal temperature is greater than or equal to a preset temperature; the acquiring unit is used to acquire a third time duration, which is the time duration for the evaporator fan to be shut down according to the third closing instruction; the sending unit is used to confirm that the target refrigerator is in an abnormally closed state when the third time duration is greater than a preset second time duration, send a fourth closing instruction to the refrigeration unit according to the abnormal closed state, and control the buzzer to issue an early warning to prompt the user that the target refrigerator is in a cooling leakage state.

[0026] In a third aspect of the present application, an electronic device is provided, which includes a processor, a memory, a user interface and a network interface, the memory is used to store instructions, the user interface and the network interface are used to communicate with other devices, and the processor is used to execute the instructions stored in the memory, so that an electronic device executes any one of the methods described above in the present application.

[0027] In a fourth aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores instructions, and when the instructions are executed, any one of the above methods of the present application is executed.

[0028] In summary, one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. Obtain the first internal temperature of the target refrigerator, and then use the heat conduction formula to calculate the change of the internal temperature of the refrigerator over time. This can accurately capture the rapid rise of the internal temperature when the refrigerator door is opened (due to the influx of external heat). By comparing the values ​​(first value and second value) calculated at different time points (first time point and second time point), it is possible to accurately determine whether the refrigerator door is open. This dynamic comparison mechanism can reflect the state change of the refrigerator door in real time, avoiding misjudgment or missed judgment caused by long-term wear of the mechanical switch; after confirming that the refrigerator door is open, the evaporator fan can be intelligently turned off to reduce unnecessary energy consumption. At the same time, by monitoring the evaporator temperature and comparing the first duration with the preset duration, it is possible to further decide whether to turn off the refrigeration unit, thereby achieving more refined energy consumption management to reduce the energy consumption of the refrigerator and improve its operating efficiency.

[0029] 2. Obtaining the fifth internal temperature at preset intervals can monitor the temperature changes inside the refrigerator in real time, determine the preset temperature based on the ambient temperature, and enable the refrigerator to adjust according to different environmental conditions. Comparing the fifth internal temperature with the preset temperature can accurately determine whether the refrigerator is in a normally closed state. If the target refrigerator door is not closed correctly, the internal temperature will be higher than the preset temperature. By timely detecting and confirming the refrigerator status, energy waste caused by the door not being closed can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a first flow chart of a method for controlling refrigerator operation provided by an embodiment of the present application; Figure 2 is a second flow chart of a method for controlling refrigerator operation provided by an embodiment of the present application; Figure 3 is a third flow chart of a method for controlling refrigerator operation provided by an embodiment of the present application; Figure 4 is a fourth flow chart of a method for controlling refrigerator operation provided by an embodiment of the present application; Figure 5 It is a structural schematic diagram of a control device for refrigerator operation provided in an embodiment of the present application; Figure 6 It is a structural schematic diagram of an electronic device disclosed in an embodiment of the present application.

[0031] Explanation of reference numerals: 501, acquisition unit; 502, processing unit; 503, sending unit; 600, electronic device; 601, processor; 602, memory; 603, user interface; 604, network interface; 605, communication bus. DETAILED DESCRIPTION

[0032] In order to enable technicians in this field to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0033] In the description of the embodiments of the present application, words such as "for example" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "for example" or "for example" is intended to present related concepts in a specific way.

[0034] In the description of the embodiments of the present application, the meaning of the term "multiple" refers to two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0035] With the continuous advancement of refrigerator technology, modern commercial refrigerators generally have large capacity and multifunctional characteristics, integrating refrigeration, freezing and fine preservation functions, accurately meeting the diverse needs of food storage. Especially in commercial application environments such as catering services and retail supermarkets, commercial refrigerators effectively ensure the freshness of ingredients and goods with their excellent preservation performance, greatly reducing the economic losses caused by food spoilage.

[0036] In the daily operation of commercial refrigerators, energy saving and consumption reduction has become a focus of attention. In order to ensure that energy-consuming components such as evaporator fans can stop running when not necessary, accurate monitoring of the closed state of the refrigerator door is particularly critical. Traditionally, commercial refrigerators use mechanical or electronic switches to achieve this monitoring function. These switches are carefully installed at key locations on the door edge or door frame so that when the door is closed, the control system is triggered by changes in physical contact, and corresponding energy-saving measures are taken, such as shutting down the evaporator fan. However, if there is a slight deviation in the installation process of the mechanical switch, or the gap between the door and the frame increases due to long-term use, the trigger mechanism of the switch may fail and the door status cannot be accurately sensed, which in turn causes the problem of increased energy consumption of the refrigerator.

[0037] Therefore, how to solve the problem of trigger mechanism failure of mechanical switches due to installation deviation. A control method for refrigerator operation provided in an embodiment of the present application is applied to a refrigerator controller. The refrigerator controller is installed in a target refrigerator, and the target refrigerator includes an evaporator fan, an evaporator, a refrigeration unit and a defrost device. The evaporator fan uses the evaporation process of water to reduce the air temperature. The evaporator fan can accelerate the flow and distribution of cold air by working with the evaporator. The evaporator uses the characteristic of absorbing heat when the liquid refrigerant evaporates to reduce the air temperature. The refrigeration unit is a device for refrigeration, and the defrost device is used to defrost the target refrigerator. The refrigerator controller of the present application is a platform for controlling services for the target refrigerator. Figure 1 This is a first flow chart of a method for controlling refrigerator operation provided by an embodiment of the present application, with reference to Figure 1 The method includes the following steps S101-S107.

[0038] S101: After determining that the target refrigerator is in an operating state, obtaining a first internal temperature of the target refrigerator corresponding to a first time point.

[0039] In the above S101, the target refrigerator is any refrigerator to be monitored. Before monitoring the target refrigerator, it is necessary to confirm whether the target refrigerator is in working state, which can be achieved by detecting the power state of the refrigerator.

[0040] In addition, when the target refrigerator completes the power-on operation, the refrigerator immediately enters the initialization state, monitors the internal temperature of the target refrigerator, and then compares the internal temperature with the preset temperature. If the internal temperature is greater than the preset temperature, the refrigerator is assumed to be in a reuse state. The refrigeration equipment in the refrigerator needs to be turned on, and the internal temperature of the refrigerator is monitored in real time. Only when the internal temperature is less than the preset temperature can the target refrigerator be assumed to be in a working state, which specifically includes: in response to the target refrigerator power-on completion operation, obtaining a second internal temperature and a second evaporator temperature; judging whether the second internal temperature is less than or equal to the preset internal temperature, and whether the second evaporator temperature is less than or equal to the preset second temperature; when the second internal temperature is greater than the preset internal temperature, and the second evaporator temperature is greater than the preset second temperature, confirm that a first start instruction is sent to the evaporator fan; if it is determined that the evaporator fan is in the on state, control the refrigeration unit to start; obtain the second time duration, which is the total time duration of continuous operation of the refrigeration unit; determine whether the second time duration is less than or equal to the preset defrost time duration; when the second time duration is less than or equal to the preset defrost time duration, confirm that a third internal temperature and a third evaporator temperature are obtained; when the third internal temperature is less than or equal to the preset internal temperature, and the third evaporator temperature is less than or equal to the preset second temperature, confirm that the target refrigerator is in working condition.

[0041] Specifically, when it is determined that the power indicator light of the target refrigerator is turned on, it is confirmed that the target refrigerator has completed the power-on operation, and various parameters of the target refrigerator need to be monitored. A temperature sensor is built into the target refrigerator in advance to obtain the temperature inside the refrigerator in real time. The specific number of installed temperature sensors can be set based on actual conditions, and no excessive restrictions are made here. The second internal temperature of the refrigerator is obtained through the temperature sensor inside the refrigerator. At this time, the second internal temperature reflects the current temperature state inside the refrigerator. At the same time, the second evaporator temperature of the evaporator is also obtained. The evaporator is an important part of the refrigerator refrigeration system, and its temperature state has a direct impact on the refrigeration effect of the refrigerator. The obtained second internal temperature and the second evaporator temperature are compared with the preset thresholds respectively. The second internal temperature is compared with the preset internal temperature, and the second evaporator temperature is compared with the preset second temperature. The preset internal temperature and the preset second temperature are based on the temperature corresponding to the target refrigerator when it is not powered on. The preset internal temperature and the preset second temperature are determined based on the actual model and refrigeration effect of the target refrigerator, and no excessive restrictions are made here. If the second internal temperature is less than or equal to the preset internal temperature, it means that the temperature inside the refrigerator is already at or below the desired refrigeration temperature, indicating that the target refrigerator was in a working state before the power-on operation. Due to the power outage, the target refrigerator needs to be powered on again. At this time, it can be determined that the target refrigerator has resumed its working state according to the power-on operation. If the second internal temperature is greater than the preset internal temperature, it means that the temperature inside the refrigerator is still higher than the desired refrigeration temperature, indicating that the target refrigerator was in a stopped state before the power-on operation, so measures need to be taken to cool it down. If the second evaporator temperature is less than or equal to the preset second temperature, it means that the temperature of the evaporator is already at or below the desired refrigeration temperature. It is assumed that the target refrigerator is facing a power outage during normal use, and the temperature corresponding to the evaporator in the target refrigerator is still in a normal refrigeration state. If the second evaporator temperature is greater than the preset second temperature, it means that the temperature of the evaporator is still higher than the desired refrigeration temperature. It can be assumed that the target refrigerator was in an unused state before the power-on operation, so measures need to be taken to cool the target refrigerator. If the second internal temperature is less than or equal to the preset internal temperature, and the second evaporator temperature is less than or equal to the preset second temperature, it is confirmed that there is no need to turn on the evaporator fan and the refrigeration unit in the target refrigerator, and the target refrigerator is assumed to be in working state. When the second internal temperature is greater than the preset internal temperature, and the second evaporator temperature is greater than the preset second temperature, the target refrigerator is assumed to be in an unused state before the power-on operation, and the refrigeration equipment in the target refrigerator needs to be started to cool the target refrigerator. Therefore, the first start instruction is sent to the evaporator fan first. The first start instruction is sent to the evaporator fan to start the evaporator fan. The operation of the evaporator fan can promote air circulation inside the refrigerator and improve the refrigeration effect.After confirming that the evaporator fan is already in the on state, after the evaporator fan is turned on for a period of time, the internal temperature and evaporator temperature of the target refrigerator are obtained again. If the internal temperature and evaporator temperature are still greater than the preset threshold at this time, the refrigeration unit will be controlled to start. The refrigeration unit is the core part of the refrigerator refrigeration system. Its startup will start the refrigeration process and lower the temperature inside the refrigerator. For example, the preset internal temperature is set to 2°C, and the preset second temperature is set to 1°C. When the second internal temperature is 4°C and the second evaporator temperature is 5°C, the second internal temperature is greater than the preset internal temperature, and the second evaporator temperature is greater than the preset second temperature. Confirm that the evaporator fan and the refrigeration unit are sent a start instruction so that the refrigeration unit and the evaporator fan start to refrigerate the inside of the refrigerator.

[0042] In addition, after the refrigeration unit is started, the total duration of continuous operation of the refrigeration unit is obtained, that is, the second duration, which reflects the working state and efficiency of the refrigeration unit. The second duration is compared with the preset defrost duration. The preset defrost duration is a threshold used to determine whether the target refrigerator needs to be defrosted. If the second duration is less than or equal to the preset defrost duration, it means that the working time of the refrigeration unit has not reached the level that requires defrosting, and the working time of the refrigeration unit in the target refrigerator will continue to be monitored. When the second duration is less than or equal to the preset defrost duration, the internal temperature and evaporator temperature of the refrigerator, that is, the third internal temperature and the third evaporator temperature, will be obtained again. The third internal temperature of the refrigerator and the third evaporator temperature of the evaporator are obtained through the temperature sensor. The third internal temperature and the third evaporator temperature will be compared with the preset threshold. If the third internal temperature is less than or equal to the preset internal temperature, and the third evaporator temperature is less than or equal to the preset second temperature, it means that the refrigerator is already in a normal working state and the refrigeration effect is good. At this time, a shutdown command can also be sent to the evaporator fan so that the evaporator fan is turned off. For example, the duration of continuous operation of the refrigeration unit can be obtained, which can also be understood as the cumulative operating time. That is, the second duration is 2 hours, and the preset defrost duration is 3 hours. At this time, the second duration is less than the preset defrost duration, and there is no need to defrost the target refrigerator, and then continue to obtain the internal temperature and evaporator temperature of the target refrigerator.

[0043] Further, when the second time length is greater than the preset defrost time length, it is confirmed that a defrost instruction is sent to the defrost device so that the defrost device performs a defrost operation on the target refrigerator according to the defrost instruction. When the second time length is greater than the preset defrost time length, it is confirmed that the refrigerator needs to be defrosted. A defrost instruction is sent to the defrost device. This instruction is usually an electrical signal used to trigger the start of the defrost device. After receiving the defrost instruction, the defrost device will start immediately. The defrost device may include components such as a heating wire, a heater, and a fan for heating the evaporator and melting the frost layer on its surface. During the defrost process, the operating status of the defrost device and the temperature change of the evaporator may be continuously monitored. This helps to ensure the smooth progress of the defrost operation and prevent overheating or damage to the evaporator. When the frost layer on the surface of the evaporator is completely melted and the temperature of the evaporator returns to the preset second temperature, it is determined that the defrost operation has been completed. At this time, a stop instruction is sent to the defrost device to end the defrost process. After the defrost operation is completed, a period of time (such as a few minutes) will be waited to ensure that the moisture on the surface of the evaporator is completely evaporated. The refrigeration unit will then be restarted to restore the refrigerator's cooling function. The refrigerator's internal temperature and evaporator temperature will be continuously monitored to ensure that the refrigerator returns to normal working condition. If the temperature is abnormal, further measures may be taken to solve the problem. During the entire defrosting process, the safety of the power socket needs to be ensured to avoid safety hazards caused by short circuits and other reasons. At the same time, the defrosting equipment also needs to have safety functions such as overheating protection. Figure 2 shown.

[0044] Furthermore, after the target refrigerator is in working state, it is necessary to obtain a first internal temperature of the refrigerator corresponding to a first time point. This can usually be achieved by a temperature sensor inside the refrigerator. The temperature sensor monitors the temperature inside the refrigerator in real time and transmits the data to the refrigerator controller.

[0045] S102: Calculate the first time point and the first internal temperature using a heat conduction formula to obtain a first value.

[0046] In the above S102, after obtaining the first internal temperature corresponding to the first time point, the heat conduction formula is used to calculate and obtain the first value. The heat conduction formula usually involves parameters such as the internal temperature of the refrigerator, time, material density, specific heat capacity, and thermal conductivity coefficient. The heat conduction formula is as follows: ; Wherein, T represents the temperature inside the refrigerator, t represents time, k represents thermal conductivity, p represents material density, c represents specific heat capacity, x represents the position of the temperature sensor inside the refrigerator, and k / pc represents thermal diffusion coefficient. By calculating the first time point and the first internal temperature through the above formula, a value reflecting the heat conduction relationship between the internal temperature of the refrigerator and time can be obtained, that is, the first value.

[0047] S103: Compare the first value with the second value, where the second value is calculated for the target refrigerator at a second time point, and the second time point is earlier than the first time point.

[0048] In the above S103, before comparing the first value with the second value, the second value needs to be obtained, which specifically includes: determining that the target refrigerator is in a door-closed state, obtaining the fourth internal temperature corresponding to the target refrigerator at the second time point; using the heat conduction formula to calculate the second time point and the fourth internal temperature to obtain the second value. Specifically, the photographed image corresponding to the refrigerator door can be obtained, and then the photographed image can be identified to determine whether the door of the current refrigerator is in a closed or open state. If it is confirmed that the target refrigerator is in a door-closed state, the second time point can be determined at this time, and the second time point is in the stable stage after the refrigerator door is closed to ensure that the acquired temperature data can reflect the actual temperature state inside the refrigerator. The internal temperature of the refrigerator, that is, the fourth internal temperature, can be obtained by a built-in temperature sensor, and the fourth internal temperature is the internal temperature corresponding to the target refrigerator at the second time point. Then use the above-mentioned heat conduction formula to calculate the second time point and the fourth internal temperature to determine the second value corresponding to the target refrigerator in the door-closed state. At this time, the second value reflects the temperature change inside the refrigerator in the door-closed state. The second value can be understood as the temperature change inside the refrigerator when the target refrigerator is in a working state and the refrigerator door is closed. Before obtaining the first internal temperature of the target refrigerator corresponding to the first time point, it is necessary to first determine the temperature change corresponding to the target refrigerator when the door is closed, that is, the second value. Then the first value is compared with the second value. If the first value is greater than the second value, this may indicate that the refrigerator door was opened before the first time point (that is, between the second time point and the first time point), causing the internal temperature of the refrigerator to rise.

[0049] S104: When the first value is greater than the second value, confirm that the target refrigerator is in a door open state.

[0050] In the above S104, when the first value is greater than the second value, it is confirmed that the refrigerator door is in the open state. This is because the opening of the refrigerator door will cause the temperature inside the refrigerator to rise, so that the first value is greater than the second value. For example, if the first value is 3°C and the second value is 2°C, the first value is greater than the second value. Since the temperature change inside the refrigerator is in an upward trend due to the opening of the refrigerator door, the target refrigerator is assumed to be in the door open state.

[0051] S105: Send a first closing instruction to the evaporator fan according to the door opening state, and obtain a first duration, the first duration is the duration between the third time point and the target time point, the third time point is the time point when the evaporator fan is closed according to the first closing instruction, and the target time point is the current time point.

[0052] In the above S105, once it is confirmed that the refrigerator door is open, a first closing instruction will be immediately sent to the evaporator fan. The evaporator fan is an important component inside the refrigerator, which is used to promote air circulation inside the refrigerator. Turning off the evaporator fan can reduce the air flow inside the refrigerator, thereby slowing down the temperature drop (after the refrigerator door is opened, the evaporator fan is usually turned off first in order to save energy and reduce cold loss). At the same time, the refrigerator controller will start timing to obtain the duration from the evaporator fan turning off (the third time point) to the current time point (the target time point), that is, the first duration.

[0053] S106: When the first time period is greater than or equal to the preset first time period, a first evaporator temperature corresponding to the evaporator is obtained.

[0054] In the above S106, when the first time length is greater than or equal to the preset first time length, the first evaporator temperature corresponding to the evaporator is obtained. This is to determine whether the evaporator has been sufficiently cooled and whether the refrigeration unit needs to be shut down. The first evaporator temperature is compared with the preset first temperature. The preset first temperature is a threshold value used to determine whether the evaporator needs to continue working. If the first evaporator temperature is less than or equal to the preset first temperature, this indicates that the evaporator has been sufficiently cooled and the temperature inside the refrigerator has been relatively stable.

[0055] S107: When the first evaporator temperature is less than or equal to the preset first temperature, confirm to send a second closing instruction to the refrigeration unit so that the refrigeration unit is closed according to the second closing instruction.

[0056] In the above S107, when the first evaporator temperature is less than or equal to the preset first temperature, the refrigerator controller sends a second closing instruction to the refrigeration unit. The refrigeration unit is the core component of the refrigerator, which is used to provide coldness to maintain the low temperature environment inside the refrigerator. Turning off the refrigeration unit can further save energy and reduce unnecessary coldness loss. By monitoring the internal temperature of the refrigerator in real time, using the heat conduction formula for calculation, comparing the values ​​at different time points, judging the state of the refrigerator door, sending a closing instruction, and monitoring the evaporator temperature, intelligent monitoring and control of the refrigerator operation state are achieved. This helps to improve the energy efficiency of the refrigerator, extend the service life, and provide users with a more convenient and intelligent use experience. After confirming that the evaporator fan and the refrigeration unit in the target refrigerator have been turned off, it is necessary to judge the opening and closing of the target refrigerator door again, and it is necessary to re-acquire the sixth internal temperature of the target refrigerator corresponding to the fifth time point. The fifth time point is after the first time point, and the fifth time point and the sixth internal temperature are input into the heat conduction formula for calculation to obtain a third value. The third value is then compared with the first value, because the first value only represents the current temperature change inside the target refrigerator at this time. If the third value is greater than the first value, it is confirmed that the target refrigerator is still in the door open state. If the third value is less than or equal to the value, it is confirmed that the target refrigerator is switched from the door open state to the door closed state. Then, according to the above steps, the state of the door of the target refrigerator at different time points is judged in turn. Figure 3 shown.

[0057] In addition, when the first value is less than the second value, it is confirmed that the target refrigerator is in a door-closed state; a second opening instruction is sent to the evaporator fan according to the door-closed state; if it is determined that the evaporator fan is in an open state, the refrigeration unit is controlled to start. Specifically, if the second value represents the internal temperature change when the refrigerator door is closed, the second value is compared with the first value to determine the state of the door corresponding to the target refrigerator at the first time point. When the first value is less than the second value, it can be regarded as the target refrigerator is in a door-closed state. Once it is confirmed that the first value is less than the second value, it is considered that the target refrigerator is indeed in a door-closed state. This judgment is crucial for subsequent operations because it ensures that subsequent startup operations are performed only when the refrigerator door is properly closed. If the second value represents the internal temperature change when the refrigerator door is open, when the first value is less than the second value, it can be regarded as the target refrigerator from opening to closing. Since the refrigerator door is closed, the outside air will be prevented from entering the refrigerator, and the cold air inside the refrigerator cannot flow out, and the target refrigerator is in a door-closed state. After confirming that the refrigerator door is closed, a second opening instruction is sent to the evaporator fan. This instruction is an electrical signal or a control signal used to trigger the start of the evaporator fan. After receiving the command, the evaporator fan will start to operate. Its main function is to increase the air flow inside the refrigerator and improve the refrigeration efficiency. The start of the fan is an important part of the refrigerator refrigeration process because it helps to take away the heat absorbed by the refrigerant when it evaporates faster, thereby accelerating the cooling process inside the refrigerator. After the fan is started, its operating status may be continuously monitored. This includes parameters such as the fan speed and current consumption to ensure its normal operation and avoid potential failures. Before controlling the refrigeration unit to start, it is necessary to confirm that the evaporator fan is already in the on state. This is to ensure that there is enough air flow to assist the refrigeration process when the refrigeration unit starts working. Once it is confirmed that the fan is on, a start command will be sent to the refrigeration unit. This command is also an electrical signal or control signal used to trigger the start of key components of the refrigeration unit, such as the compressor and condenser. After the refrigeration unit is started, it will start to execute the refrigeration cycle. During this process, the refrigerant evaporates and absorbs heat in the evaporator, and then condenses and releases heat in the condenser. Through this process, the temperature inside the refrigerator will gradually decrease to achieve the desired refrigeration effect. During the refrigeration process, the controller may continuously monitor parameters such as temperature and pressure inside the refrigerator and adjust them as needed. For example, when the first value is 3°C and the second value is 4°C, the first value is smaller than the second value, indicating that the temperature change inside the refrigerator is on a downward trend. The temperature drop proves that the refrigerator is in the door closed state. Because the refrigerator door is not opened, the cold air will not flow away, thereby confirming that the refrigerator door is in the closed state.If the first value is equal to the second value, the current state of the refrigerator door is determined based on the state of the refrigerator door corresponding to the second value. If the second value determines that the refrigerator door is in the open state, and the first value is the same as the second value, it can be assumed that the target refrigerator is still in the open state at this time.

[0058] Further, after confirming that the target refrigerator is in the door closed state, the door closed state of the target refrigerator needs to be checked to check whether the refrigerator door is in a normal closed state, specifically including: obtaining the fifth internal temperature corresponding to the target refrigerator at intervals of a preset time; obtaining the ambient temperature corresponding to the target refrigerator, and determining the preset temperature according to the ambient temperature; judging whether the fifth internal temperature is less than the preset temperature; when the fifth internal temperature is less than the preset temperature, confirming that the target refrigerator is in a normal closed state. Specifically, the time corresponding to confirming that the target refrigerator is in the door closed state is obtained, and the preset time is a fixed time period, which is used to obtain its internal temperature after the refrigerator runs stably. After the refrigerator door is closed, the controller starts timing and waits for the preset time to pass. After the preset time arrives, the current internal temperature, i.e., the fifth internal temperature, is obtained through the temperature sensor inside the refrigerator. This temperature value will be used for subsequent comparison and judgment. The ambient temperature of the location of the refrigerator is obtained through the external ambient temperature sensor. According to the obtained ambient temperature, the system determines a suitable preset temperature through a preset algorithm or rule. This preset temperature is usually a range value, which is used to judge whether the internal temperature of the refrigerator is in a normal state. The determination of the preset temperature may take into account factors such as the type, capacity, refrigeration efficiency of the refrigerator and the influence of ambient temperature on the performance of the refrigerator. The obtained fifth internal temperature is compared with the preset temperature. If the fifth internal temperature is less than the preset temperature, it means that the internal temperature of the refrigerator is in a normal or low state, which usually means that the refrigerator is cooling effectively and the door is in a normally closed state. If the fifth internal temperature is greater than or equal to the preset temperature, it may be necessary to further check the operating state of the refrigerator or the closing state of the door. If the fifth internal temperature is less than the preset temperature, it is confirmed that the target refrigerator is in a normally closed state based on this judgment result. This means that the door of the refrigerator has been properly closed and the refrigerator is operating normally. After confirming that the refrigerator is in a normally closed state, the controller may continue to monitor the operating state of the refrigerator or perform other related operations, such as adjusting the refrigeration efficiency, recording data, etc. For example, if the ambient temperature is 2°C, the preset temperature can be set to 1°C. After confirming that the target refrigerator is in a door closed state, the fifth internal temperature corresponding to the target refrigerator is obtained after an interval of 5 minutes. If the fifth internal temperature is 0°C, it is confirmed that the target refrigerator is in a normally closed state at this time because the refrigerator is currently in normal cooling mode.

[0059] Further, when the fifth internal temperature is greater than or equal to the preset temperature, it is confirmed that a third closing instruction is sent to the evaporator fan; the third duration is obtained, and the third duration is the duration for the evaporator fan to be closed according to the third closing instruction; when the third duration is greater than the preset second duration, it is confirmed that the target refrigerator is in an abnormal closed state, and a fourth closing instruction is sent to the refrigeration unit according to the abnormal closed state, and the buzzer is controlled to warn the user to remind the user that the target refrigerator is in a leaking state. Specifically, it is determined whether the fifth internal temperature is greater than or equal to the preset temperature. This preset temperature is a reasonable temperature value preset according to factors such as the operating state of the refrigerator, the ambient temperature, and the refrigeration demand. If the fifth internal temperature is greater than or equal to the preset temperature, it will be considered that there is a problem with the temperature control inside the refrigerator, which may be caused by the low operating efficiency of the evaporator fan or the refrigerator door is not closed correctly. At this time, the third closing instruction will be sent to the evaporator fan to try to reduce energy consumption by turning off the fan and check the operating state of the refrigerator. At the same time as the third closing instruction is sent, the timing will start to record the time from receiving the instruction to the complete closure of the evaporator fan, that is, the third duration. During the timing process, the status of the evaporator fan will be continuously monitored until it is confirmed that the fan has been completely turned off. The third duration will be compared with the preset second duration. The preset second duration is a reasonable shutdown time range preset based on refrigerator design and operating experience. If the third duration is longer than the preset second duration, it will be considered that the evaporator fan has been turned off for too long, which may be due to the refrigerator door not being closed properly or poorly sealed, resulting in cold leakage. At this time, the controller will confirm that the target refrigerator is in an abnormally closed state. After confirming that the refrigerator is in an abnormally closed state, a fourth shutdown command will be immediately sent to the refrigeration unit to stop the operation of the refrigeration unit to avoid further energy consumption and possible damage. At the same time, the buzzer will be controlled to sound an early warning sound to remind the user that the refrigerator is in a cold leakage state and needs to be checked and handled immediately. After the user hears the buzzer warning, he should immediately check whether the refrigerator door is closed tightly and whether there are other problems that may cause cold leakage. If it is confirmed that the refrigerator door is not closed or poorly sealed, causing cold leakage, the user should close the refrigerator door again and ensure its sealing. If the problem cannot be solved, the user may need to contact after-sales service personnel for further inspection and repair, such as Figure 4 shown.

[0060] Through the above method, before monitoring the target refrigerator, it is necessary to first determine whether the power supply of the target refrigerator is in a normal power supply state. Based on the power-on operation of the target refrigerator, the initial internal temperature and evaporator temperature of the target refrigerator are obtained, and then the initial internal temperature and evaporator temperature are compared with the preset thresholds respectively. If the initial internal temperature and evaporator temperature are both less than or equal to the preset thresholds, it is confirmed that the target refrigerator is in a working state. If the initial internal temperature and evaporator temperature are both greater than the preset thresholds, the evaporator fan and the refrigeration unit are controlled to start and enter the working state. When it is determined that the refrigeration unit is in a working state, the continuous working time corresponding to the refrigeration unit is obtained, and the continuous working time is compared with the preset time. If the continuous working time is greater than the preset time, the target refrigerator needs to be defrosted. If the continuous working time is less than or equal to the preset time, the working time of the refrigeration unit in the target refrigerator continues to be monitored. Then the new evaporator temperature in the target refrigerator is re-obtained and compared with the new evaporator temperature. If the new evaporator temperature is greater than the preset temperature, the evaporator fan can be controlled to be turned off. The internal temperature of the refrigerator corresponding to different time points is obtained in real time, and the heat conduction formula is used for calculation to obtain a first value. The first value refers to the temperature change corresponding to the first time point of the target refrigerator. The second time point is obtained according to the first time point, and the second time point is the time point before the first time point. Then the second internal temperature corresponding to the second time point is obtained, and the heat conduction formula is used to calculate the second time point and the second internal temperature to obtain a second value. The first value and the second value are compared. When the first value is greater than the second value, it is confirmed that the temperature change inside the target refrigerator is in an upward trend, and it can be determined that the target refrigerator is in a door open state. According to the door open state, a closing instruction is sent, and the evaporator temperature is monitored. If the evaporator temperature is less than or equal to the preset first temperature, it is assumed that the refrigerator door is open for a long time. In order to improve the energy consumption of the refrigerator, the refrigeration unit needs to be closed, and the intelligent monitoring and control of the refrigerator operation state is realized. When the first value is less than the second value, it is confirmed that the temperature change inside the target refrigerator is in a downward trend, and it can be determined that the target refrigerator is in a door closed state. After a preset time interval, the fifth internal temperature corresponding to the target refrigerator is obtained, and then the preset temperature is determined according to the ambient temperature. The fifth internal temperature is compared with the preset temperature. The purpose of the comparison is to determine whether the refrigerator door is in a normally closed state. When the fifth internal temperature is lower than the preset temperature, it is confirmed that the refrigerator door is in a normally closed state. When the fifth internal temperature is greater than or equal to the preset temperature, it is confirmed that the refrigerator door is in an abnormally closed state. It is necessary to send a closing command to the evaporator fan and the refrigeration unit, and control the buzzer to start an early warning so that the user can check the closing status of the target refrigerator door in time.

[0061] The embodiment of the present application also provides a control device for refrigerator operation. Figure 5 is a schematic diagram of a control device for refrigerator operation provided in an embodiment of the present application, with reference to Figure 5 The device is a refrigerator controller, which includes an acquisition unit 501, a processing unit 502 and a sending unit 503.

[0062] The acquisition unit 501 acquires a first internal temperature of the target refrigerator corresponding to a first time point after determining that the target refrigerator is in a working state.

[0063] Processing unit 502 uses a heat conduction formula to calculate the first time point and the first internal temperature to obtain a first value; compares the first value with the second value, the second value is calculated for the target refrigerator at the second time point, and the second time point is earlier than the first time point; when the first value is greater than the second value, confirms that the target refrigerator is in a door-open state; sends a first closing instruction to the evaporator fan according to the door-open state, and obtains a first duration, the first duration is the duration of the interval between the third time point and the target time point, the third time point is the time point when the evaporator fan is closed according to the first closing instruction, and the target time point is the current time point; when the first duration is greater than or equal to the preset first duration, obtains the first evaporator temperature corresponding to the evaporator.

[0064] The sending unit 503 confirms to send a second closing instruction to the refrigeration unit when the first evaporator temperature is less than or equal to the preset first temperature, so that the refrigeration unit is closed according to the second closing instruction.

[0065] In one possible embodiment, the acquisition unit 501 is used to acquire the second internal temperature and the second evaporator temperature in response to the target refrigerator being powered on to complete the operation; the processing unit 502 is used to determine whether the second internal temperature is less than or equal to the preset internal temperature, and whether the second evaporator temperature is less than or equal to the preset second temperature; the sending unit 503 is used to confirm that the first start instruction is sent to the evaporator fan when the second internal temperature is greater than the preset internal temperature, and the second evaporator temperature is greater than the preset second temperature; the processing unit 502 is used to control the refrigeration unit to start if it is determined that the evaporator fan is in the on state; the acquisition unit 501 is used to acquire the second duration, which is the total duration of continuous operation of the refrigeration unit; the processing unit 502 is used to determine whether the second duration is less than or equal to the preset defrost duration; when the second duration is less than or equal to the preset defrost duration, confirm the acquisition of the third internal temperature and the third evaporator temperature; when the third internal temperature is less than or equal to the preset internal temperature, and the third evaporator temperature is less than or equal to the preset second temperature, confirm that the target refrigerator is in working condition.

[0066] In a possible implementation, the sending unit 503 is used to confirm sending a defrost instruction to the defrost device when the second time period is greater than a preset defrost time period, so that the defrost device performs a defrost operation on the target refrigerator according to the defrost instruction.

[0067] In a possible implementation, the acquisition unit 501 is used to determine that the target refrigerator is in a door-closed state, and to obtain a fourth internal temperature of the target refrigerator corresponding to a second time point; the processing unit 502 is used to calculate the second time point and the fourth internal temperature using a heat conduction formula to obtain a second value.

[0068] In a possible embodiment, the processing unit 502 is used to confirm that the target refrigerator is in a door closed state when the first value is less than the second value; send a second opening instruction to the evaporator fan according to the door closed state; if it is determined that the evaporator fan is in the open state, control the refrigeration unit to start.

[0069] In a possible embodiment, the acquisition unit 501 is used to obtain the fifth internal temperature corresponding to the target refrigerator at preset time intervals; obtain the ambient temperature corresponding to the target refrigerator, and determine the preset temperature based on the ambient temperature; the processing unit 502 is used to determine whether the fifth internal temperature is lower than the preset temperature; when the fifth internal temperature is lower than the preset temperature, it is confirmed that the target refrigerator is in a normally closed state.

[0070] In a possible embodiment, the sending unit 503 is used to confirm that a third closing instruction is sent to the evaporator fan when the fifth internal temperature is greater than or equal to the preset temperature; the acquisition unit 501 is used to obtain a third time duration, which is the time duration for the evaporator fan to be shut down according to the third closing instruction; the sending unit 503 is used to confirm that the target refrigerator is in an abnormally closed state when the third time duration is greater than the preset second time duration, send a fourth closing instruction to the refrigeration unit according to the abnormal closed state, and control the buzzer to issue an early warning to prompt the user that the target refrigerator is in a cooling leakage state.

[0071] It should be noted that: when the device provided in the above embodiment realizes its function, only the division of the above functional modules is used as an example. In actual application, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0072] The present application also discloses an electronic device. Figure 6 , Figure 6 The electronic device 600 may include: at least one processor 601 , at least one network interface 604 , a user interface 603 , a memory 602 , and at least one communication bus 605 .

[0073] The communication bus 605 is used to realize the connection and communication between these components.

[0074] The user interface 603 may include a display screen (Display) and a camera (Camera). The optional user interface 603 may also include a standard wired interface and a wireless interface.

[0075] The network interface 604 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

[0076] Among them, the processor 601 may include one or more processing cores. The processor 601 uses various interfaces and lines to connect various parts in the entire server, and executes various functions of the server and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 602, and calling data stored in the memory 602. Optionally, the processor 601 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 601 can integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application requests; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 601, and it can be implemented separately through a chip.

[0077] Among them, the memory 602 may include a random access memory (RAM) or a read-only memory (Read-Only Memory). Optionally, the memory 602 includes a non-transitory computer-readable storage medium. The memory 602 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 602 may include a program storage area and a data storage area, wherein the program storage area. Instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc. can be stored; the data storage area can store data involved in the above-mentioned various method embodiments, etc. The memory 602 can also be optionally at least one storage device located away from the aforementioned processor 601.

[0078] like Figure 6 As shown, the memory 602 as a computer storage medium may include an operating system, a network communication module, a user interface module, and an application program for controlling the operation of the refrigerator.

[0079] exist Figure 6 In the electronic device 600 shown, the user interface 603 is mainly used to provide an input interface for the user and obtain data input by the user; and the processor 601 can be used to call the application program for controlling the operation of the refrigerator stored in the memory 602. When executed by one or more processors, the electronic device executes one or more of the methods described in the above embodiments.

[0080] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required for the present application.

[0081] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0082] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0083] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0084] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0085] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a memory and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned memory includes: various media that can store program codes, such as USB flash drives, mobile hard drives, magnetic disks or optical disks.

[0086] The above is only an exemplary embodiment of the present disclosure and cannot be used to limit the scope of the present disclosure. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the disclosure of the specification and the truth of practice, it will be easy for those skilled in the art to think of other embodiments of the present disclosure. This application is intended to cover any variation, use or adaptive change of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field that are not recorded in the present disclosure.

Claims

1. A method for controlling refrigerator operation, characterized in that: Applied to a refrigerator controller, the method comprises: After determining that the target refrigerator is in the working state, obtaining a first internal temperature of the target refrigerator corresponding to a first time point; Calculate the first time point and the first internal temperature using a heat conduction formula to obtain a first value; Comparing the first value with a second value, where the second value is calculated for the target refrigerator at a second time point, and the second time point is earlier than the first time point; When the first value is greater than the second value, confirming that the door of the target refrigerator is in an open state; Sending a first closing instruction to the evaporator fan according to the door opening state, and acquiring a first duration, the first duration being the duration between a third time point and a target time point, the third time point being the time point when the evaporator fan is closed according to the first closing instruction, and the target time point being the current time point; When the first time period is greater than or equal to a preset first time period, obtaining a first evaporator temperature corresponding to the evaporator; When the first evaporator temperature is less than or equal to a preset first temperature, it is confirmed to send a second closing instruction to the refrigeration unit so that the refrigeration unit is closed according to the second closing instruction.

2. The method according to claim 1, characterized in that After determining that the target refrigerator is in the working state, the method further includes: In response to the target refrigerator being powered on and completing the operation, acquiring a second internal temperature and a second evaporator temperature; determining whether the second internal temperature is less than or equal to a preset internal temperature, and whether the second evaporator temperature is less than or equal to a preset second temperature; When the second internal temperature is greater than the preset internal temperature, and the second evaporator temperature is greater than the preset second temperature, confirming to send a first opening instruction to the evaporator fan; If it is determined that the evaporator fan is in the on state, the refrigeration unit is controlled to start; Acquire a second duration, where the second duration is the total duration of continuous operation of the refrigeration unit; Determining whether the second time duration is less than or equal to a preset defrost time duration; When the second time period is less than or equal to the preset defrost time period, confirming to obtain a third internal temperature and a third evaporator temperature; When the third internal temperature is less than or equal to the preset internal temperature, and the third evaporator temperature is less than or equal to the preset second temperature, it is confirmed that the target refrigerator is in the working state.

3. The method according to claim 2, characterized in that After determining whether the second time duration is less than or equal to a preset defrosting time duration, the method further includes: When the second time period is greater than the preset defrost time period, it is confirmed that a defrost instruction is sent to a defrost device, so that the defrost device performs a defrost operation on the target refrigerator according to the defrost instruction.

4. The method according to claim 2, characterized in that: Before comparing the first value with the second value, the second value needs to be obtained, which specifically includes: Determining that the target refrigerator is in a door-closed state, and acquiring a fourth internal temperature of the target refrigerator corresponding to the second time point; The second time point and the fourth internal temperature are calculated using the heat conduction formula to obtain the second value.

5. The method according to claim 4, characterized in that After comparing the first value with the second value, the method further includes: When the first value is less than the second value, confirming that the target refrigerator is in the door closed state; sending a second opening instruction to the evaporator fan according to the door closing state; If it is determined that the evaporator fan is in the on state, the refrigeration unit is controlled to start.

6. The method according to claim 5, characterized in that After confirming that the target refrigerator is in the door closed state when the first value is less than the second value, the method further includes: At preset time intervals, obtaining a fifth internal temperature corresponding to the target refrigerator; Acquire the ambient temperature corresponding to the target refrigerator, and determine the preset temperature according to the ambient temperature; determining whether the fifth internal temperature is less than the preset temperature; When the fifth internal temperature is lower than the preset temperature, it is confirmed that the target refrigerator is in a normally closed state.

7. The method according to claim 6, characterized in that After determining whether the fifth internal temperature is less than the preset temperature, the method further includes: When the fifth internal temperature is greater than or equal to the preset temperature, confirming to send a third closing instruction to the evaporator fan; Acquire a third time duration, where the third time duration is the time duration for the evaporator fan to be shut down according to the third shut down instruction; When the third time period is greater than the preset second time period, it is confirmed that the target refrigerator is in an abnormally closed state, a fourth closing instruction is sent to the refrigeration unit according to the abnormally closed state, and the buzzer is controlled to issue an early warning to prompt the user that the target refrigerator is in a cooling leakage state.

8. A control device for refrigerator operation, characterized in that: The device is a refrigerator controller, which comprises an acquisition unit (501), a processing unit (502) and a sending unit (503). The acquisition unit (501), after determining that the target refrigerator is in a working state, acquires a first internal temperature of the target refrigerator corresponding to a first time point; The processing unit (502) calculates the first time point and the first internal temperature using a heat conduction formula to obtain a first value; compares the first value with the second value, the second value being calculated for the target refrigerator at a second time point, the second time point being earlier than the first time point; when the first value is greater than the second value, confirming that the target refrigerator is in a door open state; sends a first closing instruction to the evaporator fan according to the door open state, and obtains a first duration, the first duration being the duration between a third time point and a target time point, the third time point being the time point when the evaporator fan is closed according to the first closing instruction, and the target time point being the current time point; when the first duration is greater than or equal to a preset first duration, obtaining a first evaporator temperature corresponding to the evaporator; The sending unit (503) confirms sending a second shutdown instruction to the refrigeration unit when the first evaporator temperature is less than or equal to a preset first temperature, so that the refrigeration unit is shut down according to the second shutdown instruction.

9. An electronic device, characterized in that: The electronic device (600) comprises a processor (601), a memory (602), a user interface (603) and a network interface (604), wherein the memory (602) is used to store instructions, the user interface (603) and the network interface (604) are used to communicate with other devices, and the processor (601) is used to execute the instructions stored in the memory (602) so that the electronic device (600) executes the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, and when the instructions are executed, the method according to any one of claims 1 to 7 is performed.

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