Refrigerator fault control method and system

Abstract

The invention provides a refrigerator fault control method and system.The method comprises the steps that refrigeration cycle data and compartment operation data are obtained, and the refrigeration cycle is the cycle from starting to stopping of a compressor; and then the state of a temperature sensor is detected, the state comprises a normal state or a fault state, if the state is the fault state, fault mode control over the compartment is executed based on the refrigeration cycle data and the compartment operation data, and the fault mode control comprises control over the refrigeration time, the refrigeration cycle and the rotating speed of a compressor. According to the refrigerator, the data of each chamber can be calculated according to the refrigeration data during normal operation of the refrigerator, so that the temperature of each chamber can be controlled when the refrigerator breaks down, and the temperature of each chamber can be accurately controlled.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a refrigerator fault control method and system. Background Art

[0002] Temperature sensors are installed in different compartments of the refrigerator to detect temperature so that the refrigerator control system can perform temperature adjustment according to the temperature requirements of each compartment. The temperature is sensed by the temperature sensor so that the control system can control the operation of the refrigeration components. The temperature sensor can also indirectly detect refrigerator failures. For example, if an abnormal temperature is detected, it may be a refrigeration system failure.

[0003] When the temperature sensor fails, in order to enable the refrigerator to maintain a certain refrigeration and freezing function, it enters a fault operation mode, where the fault operation mode includes a fixed temperature refrigeration mode, a fixed time-based refrigeration cycle mode, a default safety temperature operation mode, etc.

[0004] However, if the ambient temperature is different, the cooling cannot be adjusted according to the compartment temperature, and the temperature compensation strategy cannot be implemented, the fault operation mode cannot accurately control the compartment temperature, resulting in low compartment temperature. Summary of the invention

[0005] The present application provides a refrigerator fault control method and system to solve the problem of low compartment temperature caused by a faulty operation mode.

[0006] In a first aspect, the present application provides a refrigerator failure control method, comprising:

[0007] Acquire refrigeration cycle data and compartment operation data, wherein the refrigeration cycle is the period from compressor startup to shutdown;

[0008] Detecting a state of a temperature sensor, wherein the state includes a normal state or a fault state;

[0009] If the state is a fault state, a fault mode control of the compartment is performed based on the refrigeration cycle data and the compartment operation data, wherein the fault mode control includes control of the refrigeration time, the refrigeration cycle and the compressor speed.

[0010] In some feasible embodiments, the obtaining of refrigeration cycle data and compartment operation data includes:

[0011] In response to a refrigerator startup instruction, at the start point of the refrigeration cycle, the operation data of the refrigeration cycle is recorded, the operation data including refrigeration time, number of cycles, total compressor speed, first compressor speed, second compressor speed, third compressor speed, total compressor duration, first duration, second duration, third duration, first fan speed, second fan speed and third fan speed;

[0012] Statistical recording time, the recording time is the time when the running data is recorded;

[0013] If the recorded time is greater than or equal to a preset number of days and the end point of the refrigeration cycle is detected, refrigeration cycle data is generated based on the operation data, and compartment operation data is calculated based on the operation data.

[0014] In some feasible embodiments, if the recorded time is greater than or equal to a preset number of days and the end point of the refrigeration cycle is detected, generating refrigeration cycle data based on the operation data includes:

[0015] If the recorded time is greater than or equal to the preset number of days and the end point of the refrigeration cycle is detected, the door opening data and the defrosting instruction are obtained;

[0016] If the door opening data or the defrost instruction is obtained or the refrigeration cycle is the first cycle, the operation data of the refrigeration cycle is deleted, and the first cycle is the first cycle after the defrost instruction is obtained.

[0017] In some feasible embodiments, the compartment operation data includes first compartment operation data, and the first operation data includes first compartment refrigeration time, first average rotation speed, and refrigeration average rotation speed;

[0018] The computing room operation data includes:

[0019] Obtaining the cooling time of the first chamber, where the cooling time of the first chamber is the start time of the refrigeration fan;

[0020] Calculating a first average speed based on the first compartment cooling time, the first compressor speed, and the first duration;

[0021] Based on the first fan speed and the first compartment refrigeration time, an average refrigeration speed is calculated.

[0022] In some feasible embodiments, the compartment operation data includes second compartment operation data, and the second operation data includes second compartment cooling time, second average speed, and variable temperature average speed;

[0023] The computing room operation data includes:

[0024] Obtain the cooling time of the second chamber, where the cooling time of the second chamber is the start time of the variable temperature fan;

[0025] Calculating a second average speed based on the second compartment cooling time, the second compressor speed and the second duration;

[0026] Based on the second fan speed and the second compartment cooling time, the variable temperature average speed is calculated.

[0027] In some feasible embodiments, the compartment operation data includes the third compartment operation data, and the third operation data includes the third compartment refrigeration time, the third average rotation speed, and the freezing average rotation speed;

[0028] The computing room operation data includes:

[0029] Obtaining the cooling time of the third chamber, where the cooling time of the third chamber is the opening time of the refrigeration fan;

[0030] Calculating a third average speed based on the third compartment cooling time, the third compressor speed and the third duration;

[0031] Based on the third fan speed and the third compartment refrigeration time, an average freezing speed is calculated.

[0032] In some feasible embodiments, the refrigeration cycle data includes average cycle time and average compressor speed;

[0033] The generating refrigeration cycle data based on the operation data comprises:

[0034] Calculating an average cycle time based on the cooling time and the number of cycles;

[0035] Based on the total speed of the compressor and the total duration of the compressor, an average speed of the compressor is calculated.

[0036] In some feasible embodiments, if the state is a fault state, performing fault mode control of the compartment based on the refrigeration cycle data and the compartment operation data includes:

[0037] If the state is a fault state, obtaining a first ambient temperature and a second ambient temperature, wherein the first ambient temperature is the ambient temperature of a first refrigeration cycle, and the second ambient temperature is the ambient temperature of a refrigeration cycle next to the first refrigeration cycle;

[0038] If the difference between the second ambient temperature and the first ambient temperature is greater than a preset temperature, calculating an average speed of a first compressor of the compartment, and adjusting the average speed of the first compressor to an average speed of a second compressor, so as to perform a fault mode control of the compartment based on the average speed of the second compressor, the average speed of the second compressor being greater than the average speed of the first compressor;

[0039] If the difference between the second ambient temperature and the first ambient temperature is less than or equal to the preset temperature, the average speed of the first compressor of the compartment is calculated, and the average speed of the first compressor is adjusted to the average speed of the third compressor, so as to perform the fault mode control of the compartment based on the average speed of the second compressor, and the average speed of the third compressor is less than the average speed of the first compressor.

[0040] In some feasible embodiments, the performing of compartment failure mode control based on the refrigeration cycle data and the compartment operation data includes:

[0041] If the temperature sensors of a preset number of compartments are in a fault state, the cooling time of the first compartment, the cooling time of the second compartment and the cooling time of the third compartment are calculated;

[0042] A rotation refrigeration cycle is set based on the first compartment refrigeration time, the second compartment refrigeration time and the third compartment refrigeration time, so as to perform a fault mode control of the compartment based on the rotation refrigeration cycle, the refrigeration cycle of the fault mode is an average refrigeration cycle, and the compressor speed of the fault mode is an average compressor speed or a first average speed, a second average speed and a third average speed.

[0043] In a second aspect, the present application provides a refrigerator fault control system, comprising:

[0044] An acquisition unit, used to acquire refrigeration cycle data and compartment operation data, wherein the refrigeration cycle is a cycle from compressor startup to shutdown; and to detect the state of the temperature sensor, wherein the state includes a normal state or a fault state;

[0045] If the state is a fault state, the fault control unit performs fault mode control of the compartment based on the refrigeration cycle data and the compartment operation data, wherein the fault mode control includes control of refrigeration time, refrigeration cycle and compressor speed.

[0046] As can be seen from the above technical solutions, the present application provides a refrigerator fault control method and system, the method includes obtaining refrigeration cycle data and compartment operation data, wherein the refrigeration cycle is the cycle from compressor startup to shutdown; then detecting the state of the temperature sensor, the state includes a normal state or a fault state, if the state is a fault state, based on the refrigeration cycle data and compartment operation data, the compartment fault mode control is performed, the fault mode control includes the control of refrigeration time, refrigeration cycle and compressor speed. The data of each compartment can be calculated according to the refrigeration data when the refrigerator is operating normally, which is used to control the temperature of each compartment separately when the refrigerator fails, thereby accurately controlling the compartment temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0048] Figure 1 A flowchart of a refrigerator failure control method provided in an embodiment of the present application;

[0049] Figure 2 A schematic diagram of the operation data processing flow provided in the embodiment of the present application;

[0050] Figure 3 A schematic diagram of a flow chart for adjusting the speed of a compressor in a fault mode according to the ambient temperature provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] The following embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following embodiments do not represent all implementations consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application as detailed in the claims.

[0052] When the refrigerator temperature sensor fails, when in a refrigeration cycle mode based on a fixed time, no matter which sensor on the refrigerator side fails, some refrigerators will enter a fixed fault operation mode, refrigerating the refrigerator and freezer for a period of time according to a predetermined time, and then shut down for a certain period of time, repeating the refrigeration cycle.

[0053] In a high temperature environment, it is difficult for the refrigerator to dissipate heat, and the refrigeration system takes a long time to reach the set temperature. In a low temperature environment, the refrigerator dissipates heat quickly and may reach a lower temperature without the set refrigeration time. However, the fixed-time refrigeration cycle mode does not adjust the refrigeration time according to the ambient temperature, which can easily lead to over-refrigeration in a low temperature environment, making the room temperature too low.

[0054] And different usage conditions will cause different changes in the compartment temperature. For example, frequent opening and closing of the door, putting in a lot of hot food, etc. will increase the compartment temperature. However, when it is in a refrigeration cycle mode based on a fixed time, no matter how the compartment temperature actually changes, it will be cooled at a fixed time. When the compartment temperature is already low for some reason, it will still be cooled at a fixed time, which will cause the temperature to drop even lower.

[0055] Temperature compensation is to fine-tune the refrigeration system according to factors such as ambient temperature to ensure stable room temperature. The fixed-time refrigeration cycle mode does not have this mechanism. When the ambient temperature drops, the cooling capacity cannot be reduced accordingly, resulting in too low a room temperature.

[0056] When in fault code prompt and limited function mode, some refrigerators will be equipped with a fault self-diagnosis function. When the temperature sensor fails, the corresponding fault code will appear on the refrigerator's display screen. The refrigerator may maintain some basic refrigeration functions, but cannot achieve precise temperature control. Users can find the corresponding fault information based on the fault code and contact maintenance personnel for inspection.

[0057] When in fault code prompt and limited function mode, many normal functions of the refrigerator are limited, and the refrigerator may not be able to flexibly adjust the cooling power and time according to the changes in ambient temperature and compartment temperature. For example, the operating frequency and start and stop time of the compressor cannot be accurately controlled, and it can only operate in a limited number of fixed modes, making it difficult to adapt to complex temperature changes and over-cooling in some environments.

[0058] In addition, fault code prompts and limited function modes are mainly used to prompt faults and maintain basic functions. The requirements for temperature control accuracy are relatively low. Cooling is only performed according to the set rules, without considering the slight changes in ambient temperature and actual room temperature. It is easy to have a refrigeration time that is too long or a refrigeration power that is too large, which in turn leads to too low a room temperature.

[0059] When in the default safety temperature operation mode, some refrigerators may set the refrigeration system to operate at the default safety temperature after a temperature sensor failure. For example, the refrigerator temperature is set at a higher safety temperature to prevent food from spoiling, and the freezer temperature is set at a lower safety temperature to ensure that food is frozen and preserved. However, this mode cannot be optimized and adjusted according to the actual food storage conditions and ambient temperature.

[0060] The default safety temperature operation mode is suitable for preventing food spoilage and other problems. It will set the compartment temperature lower to ensure food safety even in the event of a fault. However, it does not take into account the diversity of ambient temperature and actual compartment temperature requirements. Without considering the ambient temperature, the refrigeration system is operated at a lower default temperature. When the ambient temperature is low, it is easy to cause the room temperature to be too low.

[0061] Moreover, the refrigeration parameters will not be adjusted according to the real-time changes in the ambient temperature and the compartment temperature, but a fixed refrigeration state will be maintained. When the ambient temperature drops, the refrigerator does not reduce the refrigeration capacity. During the continuous refrigeration process, the compartment temperature will continue to drop.

[0062] In summary, these fault operation modes cannot accurately control the compartment temperature, resulting in low compartment temperature.

[0063] Some embodiments of the present application provide a refrigerator failure control method, which can calculate the data of each compartment based on the refrigeration data when the refrigerator is operating normally, and is used to control the temperature of each compartment separately when the refrigerator fails, thereby accurately controlling the temperature of the compartment.

[0064] like Figure 1 As shown, the method comprises the following steps:

[0065] S100: Acquire refrigeration cycle data and compartment operation data.

[0066] The method provided in this embodiment is applied to a refrigerator. It can be understood that a plurality of compartments are provided in the refrigerator, for example, a refrigerating compartment and a freezing compartment. Some refrigerators are also provided with a temperature-changing chamber. In this embodiment, the refrigerating compartment, the freezing compartment and the temperature-changing chamber are provided for illustration. During the operation of the refrigerator, different compartments have different temperature requirements. In order to accurately control the temperature of different compartments, temperature sensors are provided in the compartments.

[0067] The temperature sensor is used to detect the temperature in the compartment and transmit the detected temperature information to the refrigerator control system. After receiving the temperature information, the refrigerator control system can issue instructions to the refrigeration system or temperature compensation system according to the preset temperature, so that the refrigeration system can cool or the temperature compensation system can perform temperature compensation to make the temperature of different compartments within the preset range.

[0068] Among them, the refrigeration system is used to produce a refrigeration effect, the cooling system is used to maintain a low temperature environment, the control system is used to control the temperature and humidity in the refrigerator, etc., and the cabinet is used to provide storage space. It can be understood that the refrigeration system, the cooling system, and the control system include specific components that can achieve the above functions.

[0069] In some embodiments, the refrigeration system includes a compressor, a condenser, an evaporator, and a throttling device. Among them, the compressor is used to compress the refrigerant gas, increase the pressure and temperature, and thus promote the flow of the refrigerant in the system. During the compression process, the refrigerant changes from a low-pressure and high-temperature gas to a high-pressure and high-temperature gas, thereby producing a refrigeration effect. The condenser is used to cool the high-temperature and high-pressure gas discharged from the compressor into a liquid state. The heat is released through the heat sink, and the refrigerant gas is converted into a liquid state, ready to enter the next step of the refrigeration cycle. The evaporator is used to absorb heat in the refrigeration system. The refrigerant evaporates from a liquid state to a gas state in the evaporator, absorbing heat from the surrounding environment, thereby achieving the purpose of lowering the temperature inside the refrigerator. The throttling device may include an expansion valve and a capillary tube, which are used to adjust the flow rate of the refrigerant, reduce its pressure, and make it become a low-temperature and low-pressure gas-liquid mixed state, ready to enter the evaporator.

[0070] In some embodiments, the cooling system includes a fan connected to the evaporator. The fan circulates air in the compartments, such as the freezer and refrigerator, to transfer heat to the evaporator, helping to maintain a low temperature environment inside the refrigerator.

[0071] The compressor in the refrigeration system is a variable frequency compressor, which can automatically adjust the operating speed of the compressor according to the change of refrigeration demand. It can convert the input fixed frequency power supply into a variable frequency power supply, thereby changing the speed of the compressor motor. When the refrigeration demand is large, the inverter increases the power frequency, so that the compressor motor speed increases and the cooling capacity increases. When the refrigeration demand is small, the inverter reduces the power frequency, the compressor motor speed slows down, and the cooling capacity decreases.

[0072] In this embodiment, one start and stop of the variable frequency compressor is regarded as a refrigeration cycle. When the temperature in the refrigerator rises to the set upper limit value, the temperature sensor will send a signal to start the variable frequency compressor. The variable frequency compressor gradually accelerates from a stationary state to quickly increase the cooling capacity and reduce the temperature in the refrigerator.

[0073] After the compressor is started, it enters the operation stage. According to the actual temperature and refrigeration demand in the refrigerator, the variable frequency compressor adjusts the running speed of the motor through the inverter, thereby changing the cooling capacity. If the temperature in the refrigerator is high and the heat load is large, the compressor will run at a higher speed to provide a larger cooling capacity; when the temperature gradually decreases and approaches the set temperature, the compressor speed will slow down to maintain a lower cooling capacity to keep the temperature stable.

[0074] When the temperature in the refrigerator drops to the set lower limit, the temperature sensor will send a signal again to stop the operation of the variable frequency compressor. At this time, the refrigeration process is suspended. During the refrigeration process, the fans and dampers corresponding to each compartment of the refrigerator are opened, and the electric valve is switched to the corresponding compartment side. For example, when the refrigerator compartment is refrigerated, the refrigeration fan and refrigeration damper are opened, and the electric valve is switched to the refrigeration side.

[0075] It is understandable that when one start and stop of the variable frequency compressor is regarded as a refrigeration cycle, the running time within the refrigeration cycle is not fixed. For example, in a high temperature environment, it is difficult for the refrigerator to dissipate heat, the internal temperature rises quickly, and the compressor needs to be started frequently and run for a longer time, the refrigeration cycle will be shortened and the running time will increase; while in a low temperature environment, it is easy for the refrigerator to dissipate heat, the internal temperature rises slowly, the refrigeration cycle will be longer, and the running time will be reduced.

[0076] During the operation of the refrigerator, the temperature in each compartment and the operating status of the relevant load are obtained, thereby collecting refrigeration cycle data and compartment operation data. Figure 2As shown, in response to the instruction to start the refrigerator, at the starting point of the refrigeration cycle, the operating data of the refrigeration cycle is recorded, and the recording time is counted, and the recording time is the time for recording the operating data; if the recording time is greater than or equal to the preset number of days, and the end point of the refrigeration cycle is detected, the refrigeration cycle data is generated based on the operating data, and the compartment operating data is calculated based on the operating data.

[0077] After the refrigerator is started, recording begins at the starting point of each refrigeration cycle, that is, the time when the variable frequency compressor starts refrigeration. After receiving the refrigerator start-up command, starting from the starting point of the refrigeration cycle, the operating status of the compressor is monitored by the sensor and the operating data is recorded. The operating data includes refrigeration time, number of cycles, total compressor speed, first compressor speed, second compressor speed, third compressor speed, total compressor duration, first duration, second duration, third duration, first fan speed, second fan speed and third fan speed.

[0078] The cooling time is the cooling cycle time within the preset time and T total , the number of cycles is the number of cycles within the preset time T count , calculate T by the following formula total :

[0079]

[0080] Among them, T i is the cooling cycle time.

[0081] T is calculated by the following formula count :

[0082]

[0083] The average cooling cycle time is calculated by the following formula:

[0084] T ave =T total ÷T count .

[0085] The first compressor speed is the compressor speed when the refrigerator compartment is refrigerated, and the first duration is the duration of the compressor speed when the refrigerator compartment is refrigerated. Similarly, the second compressor speed is the compressor speed when the variable temperature room is refrigerated, and the second duration is the duration of the compressor speed when the variable temperature room is refrigerated. The third compressor speed is the compressor speed when the freezer compartment is refrigerated, and the second duration is the duration of the compressor speed when the freezer compartment is refrigerated.

[0086] The total compressor speed is the compressor speed within the preset time, the total compressor duration is the compressor speed duration within the preset time, and the total compressor startup time within the preset time can also be obtained, that is, the cumulative sum.

[0087] After obtaining the operation data, the time of recording these operation data is obtained. When the recording time reaches or exceeds the preset number of days, where the preset number of days can be 10 days, 20 days, 30 days, etc., and it is detected that the current refrigeration cycle is over, the recorded operation data is processed and analyzed, and the refrigeration cycle data is generated by calculation and arrangement, such as the average refrigeration time, the average compressor speed, etc., and the compartment operation data is calculated based on the operation data.

[0088] Through the operation data, accurate refrigeration cycle data and compartment operation data can be generated, providing a basis for fault mode control, so that the refrigerator can perform compartment control more accurately when the temperature sensor fails.

[0089] No matter the refrigerator is in normal mode or fault mode, the user may open the door or the refrigerator may be defrosting during use, but opening the door or defrosting has a greater impact on the refrigeration of the compartment. If this part of the data is recorded, the temperature cannot be accurately controlled. Therefore, in some embodiments, if the recording time is greater than or equal to the preset number of days and the end point of the refrigeration cycle is detected, the door opening data and the defrost instruction are obtained; if the door opening data or the defrost instruction is obtained or the refrigeration cycle is the first cycle, the operation data of the refrigeration cycle is deleted.

[0090] The door opening data refers to the data about the opening of the refrigerator door, such as the time, duration, number of times the door is opened, etc. The defrost instruction is a command signal issued by the refrigerator control system to start the defrost program, which is used to trigger the defrost function of the refrigerator to remove the frost on the surface of the evaporator to ensure the refrigeration effect. The defrost instruction may include parameter information such as the defrost mode and defrost duration.

[0091] The first cycle is the first cycle after obtaining the defrost command, which is determined based on the issuance of the defrost command and the order of the refrigeration cycle of the refrigerator. When the control system issues the defrost command, the next refrigeration cycle that starts is the first cycle. The operating state of the refrigerator during this cycle is greatly affected by the defrost process, which may affect the accuracy of the data. Therefore, the operating data of this refrigeration cycle will be deleted.

[0092] By removing the interference of special situations such as door opening and defrosting on the operating data, the operating data can reflect the operating conditions of the refrigerator under normal refrigeration state, improve the accuracy of refrigeration cycle data and compartment operation data, and thus accurately control the temperature.

[0093] The first fan speed is the average speed of the refrigerator compartment fan within a preset time, the second fan speed is the average speed of the variable temperature compartment fan within a preset time, and the third fan speed is the average speed of the freezer compartment fan within a preset time.

[0094] In some embodiments, the compartment operation data includes first compartment operation data, and the first operation data includes first compartment refrigeration time, first average rotation speed, and refrigeration average rotation speed.

[0095] Calculate the operating data of the compartment, including:

[0096] Obtaining the cooling time of the first chamber, where the cooling time of the first chamber is the start time of the refrigeration fan;

[0097] For the cold storage room, the opening time of the refrigeration fan in one refrigeration cycle is taken as the refrigeration time of the cold storage room in one refrigeration cycle.

[0098]

[0099] T lc_ave =T lc_total ÷T count ;

[0100] Among them, T lc_i T is the refrigeration cycle and the refrigeration time of the refrigerator compartment. lc_total is the total refrigeration time of the refrigerator compartment, T lc_ave is the average refrigeration time of the refrigerator compartment.

[0101] A first average rotation speed is calculated based on the first compartment cooling time, the first compressor rotation speed and the first duration.

[0102] The first room is the cold storage room. The average compressor speed S during refrigeration in the cold storage room is lc_ave :

[0103]

[0104] Among them, Slc i tonlc is the compressor speed when the refrigerator compartment is refrigerated within the preset time. i The duration of the compressor speed when cooling the refrigerator compartment within the preset time.

[0105] Based on the first fan speed and the first room cooling time, calculate the average refrigeration speed F lc_av , see the following calculation:

[0106]

[0107] Among them, F lc_i is the speed of the refrigeration fan when the refrigeration room is refrigerated, that is, the speed of the first fan, t lc_i T is the duration of refrigeration in the refrigerator compartment. lc_total It is the total refrigeration time of the refrigerator compartment.

[0108] The compartment operation data includes the second compartment operation data, and the second operation data includes the second compartment cooling time, the second average speed and the variable temperature average speed;

[0109] The computing room operation data includes:

[0110] Obtain the cooling time of the second chamber, where the cooling time of the second chamber is the start time of the variable temperature fan;

[0111] For the variable temperature chamber, the opening time of the variable temperature fan within a refrigeration cycle is taken as the refrigeration time of the variable temperature chamber within a refrigeration cycle.

[0112]

[0113] T bw_ave =T bw_total ÷T count ;

[0114] Among them, T bw_i T is the refrigeration time of the variable temperature room in the refrigeration cycle, bw_total is the total cooling time of the variable temperature room, T bw_ave is the average cooling time of the variable temperature room.

[0115] A second average speed is calculated based on the second compartment cooling time, the second compressor speed and the second duration.

[0116]

[0117] Among them, Sbw i The speed of the compressor when cooling the variable temperature room within the preset time, tonbw i The duration of the compressor speed when cooling the variable temperature room within the preset time.

[0118] Based on the second fan speed and the second room cooling time, calculate the variable temperature average speed F bw_ave , see the following calculation:

[0119] F bw_ave =(∑ i n ＝1 F bw_i ×t bw_i )÷T bw_total ;

[0120] Among them, F bw_i is the speed of the variable temperature fan when cooling the variable temperature room, t bw_i T is the duration of cooling in variable temperature room, bw_total is the total cooling time of the variable temperature room.

[0121] The compartment operation data includes the third compartment operation data, and the third operation data includes the third compartment refrigeration time, the third average rotation speed and the freezing average rotation speed;

[0122] The computing room operation data includes:

[0123] Obtaining the cooling time of the third chamber, where the cooling time of the third chamber is the opening time of the refrigeration fan;

[0124] For the freezer compartment, the opening time of the refrigeration fan in one refrigeration cycle is taken as the refrigeration time of the freezer compartment in one refrigeration cycle.

[0125]

[0126] T ld_ave =T ld_total ÷T count ;

[0127] Among them, T ld_i T is the refrigeration cycle and the refrigeration time of the freezer compartment, ld_total is the total refrigeration time of the freezer compartment, T ld_ave is the average refrigeration time of the freezer compartment.

[0128] A third average speed is calculated based on the third compartment cooling time, the third compressor speed and the third duration.

[0129]

[0130] Among them, Sld i The speed of the compressor when the freezer is refrigerated within the preset time, tonld i The duration of the compressor speed when the freezer compartment is cooled within the preset time.

[0131] Based on the third fan speed and the third chamber refrigeration time, calculate the average refrigeration speed F ld_ave , see the following calculation:

[0132]

[0133] Among them, F ld_i The speed of the refrigeration fan when the freezer compartment is refrigerated, t ld_i T is the duration of freezing chamber refrigeration. ld_total Total refrigeration time of the freezer compartment.

[0134] For the cold storage room, the average cooling capacity is calculated as P by the following formula lc :

[0135]

[0136] Among them, Si is the compressor speed when the refrigerator compartment is refrigerated, t i Duration when cooling the refrigerator compartment.

[0137] Fixed average cooling capacity and average cooling time, by adjusting the refrigeration fan speed F lc and compressor speed S lc , so that it satisfies the following formula:

[0138] P lc =F lc ×T lc_ave +S lc ×T lc_ave ;

[0139] Adjust the refrigeration fan speed F lc and compressor speed S lc When adjusting, you can increase or decrease from the average value to make the above formula valid. Considering that the compressor speed has a greater impact on the cooling capacity than the fan, you can adjust the fan speed first, and then adjust the compressor speed if it does not meet the requirements.

[0140] If the adjusted formula holds true, the corresponding fan speed F lc and compressor speed S lc That is, the operating speed of the fan and compressor when the refrigerator compartment is refrigerated in fault mode.

[0141] If the limit value of the fan speed or the compressor speed still does not satisfy the equation, the limit value is used as the final result.

[0142] Similarly, refer to the following formula to determine the fan speed and compressor speed of the variable temperature room and the refrigeration room in the fault mode.

[0143] For greenhouse:

[0144] P bw =F bw ×T bw_ave +S bw ×T bw_ave ;

[0145] For the Freezer:

[0146] P ld =F ld ×T ld_ave +S ld ×T ld_ave .

[0147] In some embodiments, the refrigeration cycle data includes an average cycle time and an average compressor speed. The average cycle time is calculated based on the refrigeration time and the number of cycles, and the average compressor speed is calculated based on the total compressor speed and the total compressor duration.

[0148] Average compressor speed S ave :

[0149]

[0150] Among them, S i Ton is the compressor speed within the preset time. total The total startup time of the compressor within the preset time, ton i Cumulative sum.

[0151] S200: Detect the status of the temperature sensor.

[0152] The status of the temperature sensor can be detected in a variety of ways, such as the refrigerator's own diagnostic function. When the temperature sensor fails, the refrigerator's main control board can detect the abnormal signal and output the corresponding fault code through the display screen or indicator light.

[0153] Some refrigerators also allow the user to enter a diagnostic mode through a specific key combination. In the diagnostic mode, the refrigerator will perform a detection procedure and display status information of various components, such as a temperature sensor. Then, the status of the temperature sensor is detected.

[0154] It can be understood that in this embodiment, the state of the temperature sensor can be detected in a variety of ways, which are not limited here. Only the detection result, that is, the state information of the temperature sensor, is received, and the state includes a normal state or a fault state.

[0155] When the temperature sensor is in a normal state, it indicates that the temperature sensor can detect the temperature of the compartment normally, and cooperate with the control system and the refrigeration system to control the temperature of the compartment, that is, no other steps need to be performed. When the temperature sensor is in a faulty state, it indicates that the temperature sensor cannot detect the temperature of the compartment normally, and when the control system cannot receive the temperature information sent by the temperature sensor, it cannot accurately control the refrigeration system. In this embodiment, the temperature is accurately controlled by executing S300.

[0156] S300: If the state is a fault state, perform fault mode control of the compartment based on the refrigeration cycle data and the compartment operation data.

[0157] Because different compartments are provided with different temperature sensors, in some cases, the status of the temperature sensors of all compartments are all in a fault state, then each compartment executes the fault mode, that is, the refrigeration room, the temperature-changing room and the freezer room all execute the fault mode.

[0158] In some embodiments, if the status of the temperature sensors of a preset number of compartments is a fault status, the cooling time of the first compartment, the cooling time of the second compartment, and the cooling time of the third compartment are calculated;

[0159] A rotation refrigeration cycle is set based on the first compartment refrigeration time, the second compartment refrigeration time and the third compartment refrigeration time, so as to perform a fault mode control of the compartment based on the rotation refrigeration cycle, the refrigeration cycle of the fault mode is an average refrigeration cycle, and the compressor speed of the fault mode is an average compressor speed or a first average speed, a second average speed and a third average speed.

[0160] The preset number is the number of compartments. If the compartments of the refrigerator include a refrigerating compartment, a variable temperature compartment and a freezing compartment, the preset number is three. If the compartments of the refrigerator include a refrigerating compartment and a freezing compartment, the preset number is two. That is to say, the status of the temperature sensors of the preset number of compartments is a faulty state, that is, the status of the temperature sensors of all compartments is a faulty state.

[0161] When the states of the temperature sensors of all the compartments are in a fault state, the compartments can be refrigerated in turn according to the calculated average refrigeration time of each compartment, that is, the refrigeration time of the first compartment, the refrigeration time of the second compartment and the refrigeration time of the third compartment. For the refrigeration cycle in turn, the refrigeration time can be set for different compartments. For example, the refrigerator compartment is refrigerated for 10 minutes, the refrigerator compartment is stopped, the freezer compartment is refrigerated for 15 minutes, the freezer compartment is stopped, and the variable temperature room is refrigerated for 8 minutes, and the cycle is repeated.

[0162] In this embodiment, the fault mode compartment adopts the refrigeration chamber, variable temperature chamber, freezer chamber, and shutdown cycle to perform refrigeration, and the average refrigeration cycle time T calculated above is used. ave As the cooling cycle in the failure mode, use T ave , T lc , T bw , T ld As downtime in the refrigeration cycle.

[0163] Among them, the fault mode control includes the control of refrigeration time, refrigeration cycle and compressor speed.

[0164] For the compressor speed, the compressor speed of each compartment can be calculated based on S ave For overall control, the average speed S of each compartment can also be used lc_ave , S bw_ave , S ld_ave Take control.

[0165] If only one compartment's temperature sensor is in a faulty state, the fault mode will be executed only for the compartment in the faulty state, and the compartments with other temperature sensors in normal state will be temperature controlled according to the currently set start and stop points.

[0166] During the refrigeration process of the refrigerator, the ambient temperature has a great impact on the refrigerator's refrigeration demand. When the ambient temperature rises, the refrigerator needs more refrigeration to maintain the stable temperature of the compartment; when the ambient temperature drops, the refrigeration demand decreases accordingly. By monitoring the changes in ambient temperature and adjusting the compressor speed, the refrigerator can operate efficiently under different environmental conditions, ensuring the refrigeration effect and saving energy. Therefore, in order to improve the temperature control accuracy, it is necessary to consider the impact of ambient temperature.

[0167] like Figure 3 As shown, in some embodiments, if the state is a fault state, a first ambient temperature and a second ambient temperature are obtained, wherein the first ambient temperature is the ambient temperature of the first refrigeration cycle, and the second ambient temperature is the ambient temperature of the next refrigeration cycle of the first refrigeration cycle;

[0168] If the difference between the second ambient temperature and the first ambient temperature is greater than a preset temperature, calculating an average speed of a first compressor of the compartment, and adjusting the average speed of the first compressor to an average speed of a second compressor, so as to perform a fault mode control of the compartment based on the average speed of the second compressor, the average speed of the second compressor being greater than the average speed of the first compressor;

[0169] If the difference between the second ambient temperature and the first ambient temperature is less than a preset temperature, the average speed of the first compressor of the compartment is calculated, and the average speed of the first compressor is adjusted to the average speed of the third compressor, so as to perform the fault mode control of the compartment based on the average speed of the second compressor, and the average speed of the third compressor is less than the average speed of the first compressor.

[0170] In the case of temperature sensor failure, the control system obtains the ambient temperature of the first refrigeration cycle and the next refrigeration cycle, namely the first ambient temperature and the second ambient temperature, respectively, through the ambient temperature sensor. The difference between the second ambient temperature and the first ambient temperature is calculated and compared with the preset temperature. If the difference is greater than the preset temperature, it indicates that the ambient temperature has increased, the average speed of the first compressor is calculated, and it is adjusted to a larger average speed of the second compressor according to the rules; if the difference is less than the preset temperature, it indicates that the ambient temperature has decreased, the average speed of the first compressor is calculated, and it is adjusted to a smaller average speed of the third compressor. The adjusted average speed of the second compressor or the average speed of the third compressor is then applied to the fault mode control of the compartment to control the compressor to run at the new speed.

[0171] By detecting the ambient temperature and adjusting the compressor speed in fault mode, the temperature of each compartment can be accurately controlled.

[0172] Based on the above refrigerator fault control method, some embodiments of the present application also provide a refrigerator fault control system, including:

[0173] An acquisition unit, used to acquire refrigeration cycle data and compartment operation data, wherein the refrigeration cycle is a cycle from compressor startup to shutdown; and to detect the state of the temperature sensor, wherein the state includes a normal state or a fault state;

[0174] If the state is a fault state, the fault control unit performs fault mode control of the compartment based on the refrigeration cycle data and the compartment operation data, wherein the fault mode control includes control of refrigeration time, refrigeration cycle and compressor speed.

[0175] The present application provides a refrigerator fault control method and system, the method comprising obtaining refrigeration cycle data and compartment operation data, wherein the refrigeration cycle is a cycle from compressor startup to shutdown; then detecting the state of the temperature sensor, the state including a normal state or a fault state, if the state is a fault state, performing compartment fault mode control based on the refrigeration cycle data and compartment operation data, the fault mode control including control of refrigeration time, refrigeration cycle and compressor speed. The data of each compartment can be calculated based on the refrigeration data when the refrigerator is operating normally, so as to control the temperature of each compartment separately when the refrigerator fails, thereby accurately controlling the compartment temperature.

[0176] Similar parts between the embodiments provided in this application can be referenced to each other. The specific implementation methods provided above are only a few examples under the general concept of this application and do not constitute a limitation on the protection scope of this application. For those skilled in the art, any other implementation methods expanded based on the scheme of this application without creative work belong to the protection scope of this application.

Claims

1. A refrigerator failure control method, characterized in that: include: Acquire refrigeration cycle data and compartment operation data, wherein the refrigeration cycle is the period from compressor startup to shutdown; Detecting a state of a temperature sensor, wherein the state includes a normal state or a fault state; If the state is a fault state, a fault mode control of the compartment is performed based on the refrigeration cycle data and the compartment operation data, wherein the fault mode control includes control of the refrigeration time, the refrigeration cycle and the compressor speed.

2. The refrigerator failure control method according to claim 1, characterized in that: The obtaining of refrigeration cycle data and compartment operation data includes: In response to a refrigerator startup instruction, at the start point of the refrigeration cycle, the operation data of the refrigeration cycle is recorded, the operation data including refrigeration time, number of cycles, total compressor speed, first compressor speed, second compressor speed, third compressor speed, total compressor duration, first duration, second duration, third duration, first fan speed, second fan speed and third fan speed; Statistical recording time, the recording time is the time when the running data is recorded; If the recorded time is greater than or equal to a preset number of days and the end point of the refrigeration cycle is detected, refrigeration cycle data is generated based on the operation data, and compartment operation data is calculated based on the operation data.

3. The refrigerator failure control method according to claim 2, characterized in that: If the recorded time is greater than or equal to a preset number of days and the end point of the refrigeration cycle is detected, generating refrigeration cycle data based on the operation data includes: If the recorded time is greater than or equal to the preset number of days and the end point of the refrigeration cycle is detected, the door opening data and the defrosting instruction are obtained; If the door opening data or the defrost instruction is obtained or the refrigeration cycle is the first cycle, the operation data of the refrigeration cycle is deleted, and the first cycle is the first cycle after the defrost instruction is obtained.

4. The refrigerator failure control method according to claim 2, characterized in that: The compartment operation data includes first compartment operation data, wherein the first operation data includes first compartment refrigeration time, first average rotation speed, and refrigeration average rotation speed; The computing room operation data includes: Obtaining the cooling time of the first chamber, where the cooling time of the first chamber is the start time of the refrigeration fan; Calculating a first average speed based on the first compartment cooling time, the first compressor speed, and the first duration; Based on the first fan speed and the first compartment refrigeration time, an average refrigeration speed is calculated.

5. The refrigerator failure control method according to claim 2, characterized in that: The compartment operation data includes the second compartment operation data, and the second operation data includes the second compartment cooling time, the second average speed and the variable temperature average speed; The computing room operation data includes: Obtain the cooling time of the second chamber, where the cooling time of the second chamber is the start time of the variable temperature fan; Calculating a second average speed based on the second compartment cooling time, the second compressor speed and the second duration; Based on the second fan speed and the second compartment cooling time, the variable temperature average speed is calculated.

6. The refrigerator failure control method according to claim 2, characterized in that: The compartment operation data includes the third compartment operation data, and the third operation data includes the third compartment refrigeration time, the third average rotation speed and the freezing average rotation speed; The computing room operation data includes: Obtaining the cooling time of the third chamber, where the cooling time of the third chamber is the opening time of the refrigeration fan; Calculating a third average speed based on the third compartment cooling time, the third compressor speed and the third duration; Based on the third fan speed and the third compartment refrigeration time, an average freezing speed is calculated.

7. The refrigerator failure control method according to claim 2, characterized in that: The refrigeration cycle data includes average cycle time and average compressor speed; The generating refrigeration cycle data based on the operation data comprises: Calculating an average cycle time based on the cooling time and the number of cycles; Based on the total speed of the compressor and the total duration of the compressor, an average speed of the compressor is calculated.

8. The refrigerator failure control method according to claim 1, characterized in that: If the state is a fault state, performing fault mode control of the compartment based on the refrigeration cycle data and the compartment operation data includes: If the state is a fault state, obtaining a first ambient temperature and a second ambient temperature, wherein the first ambient temperature is the ambient temperature of a first refrigeration cycle, and the second ambient temperature is the ambient temperature of a refrigeration cycle next to the first refrigeration cycle; If the difference between the second ambient temperature and the first ambient temperature is greater than a preset temperature, calculating an average speed of a first compressor of the compartment, and adjusting the average speed of the first compressor to an average speed of a second compressor, so as to perform a fault mode control of the compartment based on the average speed of the second compressor, the average speed of the second compressor being greater than the average speed of the first compressor; If the difference between the second ambient temperature and the first ambient temperature is less than or equal to the preset temperature, the average speed of the first compressor of the compartment is calculated, and the average speed of the first compressor is adjusted to the average speed of the third compressor, so as to perform the fault mode control of the compartment based on the average speed of the second compressor, and the average speed of the third compressor is less than the average speed of the first compressor.

9. The refrigerator failure control method according to claim 1, characterized in that: The performing of compartment failure mode control based on the refrigeration cycle data and compartment operation data comprises: If the temperature sensors of a preset number of compartments are in a fault state, the cooling time of the first compartment, the cooling time of the second compartment and the cooling time of the third compartment are calculated; A rotation refrigeration cycle is set based on the first compartment refrigeration time, the second compartment refrigeration time and the third compartment refrigeration time, so as to perform a fault mode control of the compartment based on the rotation refrigeration cycle, the refrigeration cycle of the fault mode is an average refrigeration cycle, and the compressor speed of the fault mode is an average compressor speed or a first average speed, a second average speed and a third average speed.

10. A refrigerator fault control system, characterized in that: include: An acquisition unit, used to acquire refrigeration cycle data and compartment operation data, wherein the refrigeration cycle is a cycle from compressor startup to shutdown; and for detecting a state of a temperature sensor, the state comprising a normal state or a fault state; If the state is a fault state, the fault control unit performs fault mode control of the compartment based on the refrigeration cycle data and the compartment operation data, wherein the fault mode control includes control of refrigeration time, refrigeration cycle and compressor speed.

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