Refrigerator and method of controlling the same

Abstract

The invention discloses a refrigerator and a method for controlling the refrigerator, the refrigerator comprises a refrigerator body, a refrigerating system and a controller, and the refrigerator body is at least provided with a refrigerating chamber and a freezing chamber; the refrigerating system comprises a compressor, a condenser, a refrigerating chamber heat exchange subsystem and a freezing chamber heat exchange subsystem; the controller is connected with the refrigerating system, and the controller is configured to obtain refrigerator state data, and when the refrigerator state data meets the fault condition that hot objects are put into a refrigerating chamber, if the refrigerator meets the defrosting condition, a first preset duration is delayed from the time when it is determined that the refrigerating time of the refrigerator meets the defrosting condition, and then a defrosting program is triggered. According to the refrigerator, the situation that the temperature of the refrigerating chamber is further increased due to the fact that a defrosting program is triggered immediately after hot objects are put in the refrigerator can be avoided, and therefore food materials in the refrigerator are effectively protected against the influence of temperature fluctuation.

Description

Technical Field

[0001] The invention relates to the field of refrigerators, and in particular to a refrigerator and a method for controlling the refrigerator. Background Art

[0002] In the daily use of refrigerators, users often cause a series of problems due to improper operation, which affects the refrigerator's cooling effect. For example, users often put hot dishes that have not been completely cooled directly into the refrigerator. In this case, if the refrigerator's cooling time just reaches the preset threshold, the defrost program will be automatically triggered. However, entering the defrost process immediately after putting in hot food may cause the temperature inside the refrigerator to rise further, thus affecting its cooling performance. At the same time, the high temperature environment will have an adverse effect on the food stored in the refrigerator, which may accelerate the deterioration of the food and affect its preservation effect. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a refrigerator that can prevent the temperature of the refrigerating chamber from further increasing due to the defrosting program being triggered immediately after hot objects are placed in the refrigerator, thereby effectively protecting the food in the refrigerator from temperature fluctuations.

[0004] In order to achieve the above object, a refrigerator according to an embodiment of the present invention includes: A box body, wherein the box body is at least configured with a refrigerating chamber and a freezing chamber; A refrigeration system, the refrigeration system comprising a compressor, a condenser, a refrigerating chamber heat exchange subsystem and a freezing chamber heat exchange subsystem, the input port of the refrigerating chamber heat exchange subsystem and the input port of the freezing chamber heat exchange subsystem are respectively connected to the output port of the condenser, and the input port of the condenser is connected to the exhaust port of the compressor; A controller is connected to the refrigeration system, and is configured to: obtain refrigerator status data, and when the refrigerator status data meets a fault condition of placing a hot object in the refrigerator compartment, if the refrigerator meets a defrost condition, delay the defrost program for a first preset time period starting from when it is determined that the refrigerator refrigeration time meets the defrost condition.

[0005] According to the refrigerator of the embodiment of the present invention, the controller obtains refrigerator status data, and when the refrigerator status data meets the fault condition of placing a hot object in the refrigerator compartment, if the refrigerator meets the defrosting condition, the defrosting program is triggered after the first preset time is delayed from determining that the refrigerator refrigeration time meets the defrosting condition. The delayed defrosting operation can make the refrigeration system continue to work during the first preset time, so that the temperature in the refrigerator compartment is restored to a stable state as soon as possible after the hot object is placed, avoiding further increase in the temperature of the refrigerator compartment due to the defrosting program being triggered immediately after the hot object is placed, thereby effectively protecting the food in the refrigerator from temperature fluctuations.

[0006] In some embodiments, the controller is further configured to: start from determining that the refrigerator refrigeration time meets the defrost condition and the duration reaches the first preset time, if the temperature of the refrigerator compartment is within the normal refrigeration temperature range and the refrigerator still meets the defrost condition, control the refrigerator to execute the defrost program.

[0007] The above technical solution has the following advantages or beneficial effects: by determining that the temperature of the refrigerator compartment is within the normal refrigeration temperature range after the first preset time has been reached, the safe storage of food can be ensured. This is to prevent the temperature from being too high during the defrosting process and affecting the preservation of food inside the refrigerator.

[0008] In some embodiments, the controller is further configured to: within a second preset time period, if the number of times the refrigerator status data meets the fault condition of placing hot objects in the refrigerator compartment reaches a threshold number of times, when the refrigerator meets the defrost condition again, control the refrigerator to directly execute the defrost program, wherein the second preset time period is greater than the first preset time period.

[0009] The above technical solution has the following advantages or beneficial effects: by setting the second preset time length and number threshold, it can ensure that the refrigerator can defrost normally when necessary, reducing the reduction in refrigeration efficiency due to frost blockage.

[0010] In some embodiments, the housing is also constructed with a variable temperature chamber; the refrigeration system also includes a variable temperature chamber heat exchange subsystem, and the variable temperature chamber heat exchange subsystem is used for heat exchange in the variable temperature chamber; the input port of the variable temperature chamber heat exchange subsystem, the input port of the refrigerating chamber heat exchange subsystem and the input port of the freezer chamber heat exchange subsystem are respectively connected to the output port of the condenser, the output port of the variable temperature chamber heat exchange subsystem is refluxed with the output port of the refrigerating chamber heat exchange subsystem and then input into the freezer chamber heat exchange subsystem, and the output port of the freezer chamber heat exchange subsystem is connected to the return air port of the compressor through a liquid reservoir.

[0011] The above technical solution has the following advantages or beneficial effects: by designing the connection between the variable temperature room heat exchange subsystem and the cold storage room heat exchange subsystem and the freezer room heat exchange subsystem, the refrigerant can be effectively distributed to each heat exchange subsystem after condensation in the condenser, ensuring that each space (variable temperature room, cold storage room, freezer room) can obtain the required cooling effect.

[0012] In some embodiments, the controller is further configured to: determine the fault type satisfied by the refrigerator status data through a bad fault diagnosis model, the bad fault diagnosis model takes the refrigerator status data as input and the fault type as output, and the fault type includes the fault of placing hot objects in the refrigerator compartment.

[0013] The above technical solution has the following advantages or beneficial effects: by adopting the bad fault diagnosis model, the newly input data can be processed in real time, the data can be quickly analyzed and the fault type can be concluded as the failure of placing hot objects in the refrigerator.

[0014] In some embodiments, the controller is further configured to: when the refrigerator status data reaches a preset data amount, perform the fault type diagnosis through the bad fault diagnosis model.

[0015] The above technical solution has the following advantages or beneficial effects: by requiring the data volume to reach a certain threshold before diagnosis is performed, the system is effectively prevented from frequently triggering diagnosis in a short period of time, reducing unnecessary calculations and resource consumption. At the same time, the accumulation of data volume also helps to improve the accuracy of fault diagnosis.

[0016] In some embodiments, the preset data volume of the refrigerator status data is stored in an acquisition sequence; the diagnosis result of the fault type is obtained by performing a preset number of operations on the bad fault diagnosis model, wherein the bad fault diagnosis model uses the preset data volume of the refrigerator status data as input in sequence according to the acquisition sequence when performing the operation, and each operation uses one piece of the refrigerator status data and the previous model output result as input.

[0017] The above technical solution has the following advantages or beneficial effects: Each operation takes a piece of refrigerator status data and the previous model output result as input. This design shows that the model has a recursive characteristic, allowing the model to dynamically adjust its diagnosis based on past results. In this way, the model not only relies on new input data, but also integrates past output results, which helps to improve the ability to identify complex faults.

[0018] In some embodiments, the controller is further configured to send a fault reminder message when the refrigerator status data satisfies the condition of a hot object being placed in the refrigerating chamber.

[0019] The above technical solution has the following advantages or beneficial effects: by sending fault reminder information to the user, the user can take timely action to prevent the refrigerator from having its operating efficiency reduced due to failure to handle the fault in time.

[0020] In some embodiments, the refrigerator also includes a reminder device, and the refrigerator meets the defrost conditions, including: since the last execution of the defrost program, when the cumulative refrigeration operation time of the refrigerator reaches the defrost time threshold, it is determined that the refrigerator meets the defrost conditions.

[0021] The above technical solution has the following advantages or beneficial effects: by designing the defrost time threshold, the defrost program can be started when the frost accumulates to a certain extent in the refrigeration system, so as to maintain the efficient operation of the system and extend the life of the equipment.

[0022] In order to achieve the above-mentioned purpose, an embodiment of the present invention further proposes a method for controlling a refrigerator, including: obtaining refrigerator status data; when the refrigerator status data meets the fault condition of placing a hot object in the refrigerator compartment, if the refrigerator meets the defrost condition, delaying the defrost program for a first preset time period from the time when it is determined that the refrigerator refrigeration time meets the defrost condition.

[0023] According to the method for controlling a refrigerator in an embodiment of the present invention, the controller obtains refrigerator status data, and when the refrigerator status data meets the fault condition of placing a hot object in the refrigerator compartment, if the refrigerator meets the defrosting condition, the defrosting program is triggered after the refrigerator refrigeration time is determined to meet the defrosting condition and the first preset time is delayed. The operation of delaying defrosting can make the refrigeration system continue to work during the first preset time, so that the temperature in the refrigerator compartment is restored to a stable state as soon as possible after the hot object is placed, avoiding further increase in the temperature of the refrigerator compartment due to the defrosting program being triggered immediately after the hot object is placed, thereby effectively protecting the food in the refrigerator from temperature fluctuations.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a block diagram of a refrigerator according to an embodiment of the present invention; Figure 2 is a block diagram of a refrigerator according to an embodiment of the present invention; Figure 3 is a schematic diagram of a refrigeration system according to an embodiment of the present invention; Figure 4 is a logic block diagram of fault type diagnosis according to an embodiment of the present invention; Figure 5 is a logical diagram of model calculation according to one embodiment of the present invention; Figure 6 is a flowchart of fault type diagnosis according to an embodiment of the present invention; Figure 7 is a flow chart of a method for controlling a refrigerator according to an embodiment of the present invention; Figure 8is a flow chart of intelligent control of a refrigerator when hot objects are placed in the refrigerator compartment according to an embodiment of the present invention; Fig. 9 The invention is a flow chart of intelligent control of a refrigerator when hot objects are placed in a freezer compartment according to an embodiment of the present invention.

[0026] Reference numerals: Refrigerator 100; Box 1; Refrigeration system 2; Controller 3; Refrigerating chamber 11; freezing chamber 12; variable temperature chamber 13; compressor 21; condenser 22; refrigerating chamber evaporator 23; freezing chamber evaporator 24; variable temperature chamber evaporator 25; liquid storage tank 26. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0028] With the development of intelligent home appliance technology, more and more refrigerator products can detect some faults through their own hardware, such as sensor failure, fan failure, compressor failure, main control board failure and other common hardware problems. The detection process is relatively simple, and once the failure occurs, it cannot be recovered. However, in addition to these hardware failures, users often encounter a series of problems caused by improper human operation during the use of the refrigerator, which affects the refrigeration effect of the refrigerator. For example, users often put hot dishes that have not been completely cooled directly into the refrigerator. In this case, if the refrigerator's refrigeration time just reaches the preset threshold, the defrost program will be automatically triggered. However, entering the defrost process immediately after putting in hot objects may cause the temperature in the refrigerator to rise further, thereby affecting its refrigeration performance. At the same time, the high temperature environment will have an adverse effect on the food stored in the refrigerator, which may accelerate the deterioration of the food and affect its preservation effect.

[0029] In view of the above problems, an embodiment of the present invention provides a refrigerator, which can avoid further increase in the temperature of the refrigerating chamber due to triggering a defrosting program immediately after putting hot objects in the refrigerator, thereby effectively protecting the food in the refrigerator from temperature fluctuations.

[0030] Reference below Figure 1-Figure 6 A refrigerator according to an embodiment of the present invention is described.

[0031] Figure 1 is a block diagram of a refrigerator according to an embodiment of the present invention.

[0032] like Figure 1 As shown, the refrigerator 100 includes a cabinet 1 .

[0033] In some embodiments, the box 1 is the external structure of the refrigerator 100, providing physical protection for the internal space of the refrigerator 100, that is, it can protect the internal refrigeration components and food from the external environment, such as dust, moisture, collision, etc. Through the thermal insulation material, the box 1 can effectively isolate the temperature difference between the inside of the refrigerator 100 and the outside, reduce refrigeration loss, and ensure the refrigeration and freezing effect in the refrigerator 100. In addition, the box 1 provides structural support for various components of the refrigerator 100 (such as the compressor, the condenser 22, and the heat exchange subsystem), so that the entire refrigerator 100 can operate stably.

[0034] like Figure 2 As shown, the housing 1 is at least constructed with different functional areas such as a refrigerating chamber 11 and a freezing chamber 12 to meet the user's storage needs for different foods. Among them, the refrigerating chamber 11 is an independent space inside the refrigerator 100, suitable for storing vegetables, fruits, beverages, dairy products and other foods that do not need to be frozen but need to be stored at low temperatures. By keeping the temperature in a low range, the shelf life of the food can be effectively extended. The temperature in the refrigerating chamber 11 can be maintained between 2°C and 8°C, and the specific temperature can be adjusted according to the type of food. The freezing chamber 12 is another independent space inside the refrigerator 100, suitable for storing meat, seafood, frozen food, etc. The freezing chamber 12 can quickly freeze food to keep the nutrients of the food from being lost, and can also be used for the production of ice cubes and frozen drinks. The temperature of the freezing chamber 12 can be maintained in the range of -18°C or lower. By maintaining a low temperature environment, food can be frozen to prevent bacterial growth and food deterioration, and the shelf life of food can be extended.

[0035] like Figure 1 As shown, the refrigerator 100 further includes a refrigeration system 2 .

[0036] In some embodiments, the refrigeration system 2 is the core functional module of the refrigerator 100. Its function is to transfer the heat inside the refrigerator 100 to the outside through the circulation of the refrigerant, thereby realizing the refrigeration and freezing functions, ensuring the freshness of refrigerated food and the long-term preservation of frozen food.

[0037] Figure 3 is a schematic diagram of a refrigeration system according to an embodiment of the present invention. Figure 3 As shown, the refrigeration system 2 includes a compressor 21, a fan, a condenser 22, a refrigerating chamber heat exchange subsystem and a freezing chamber heat exchange subsystem.

[0038] In some embodiments, the compressor 21 is one of the core components of the refrigeration system 2, which increases the pressure of the refrigerant by compressing it and drives the refrigerant to circulate in the refrigeration system 2. The refrigerant exchanges heat through various heat exchange subsystems to achieve a cooling effect.

[0039] In some embodiments, the fan is a device for promoting air flow in the refrigeration system 2. It can be driven by an electric motor and can generate airflow through rotating blades to help circulate cold air inside and outside the refrigerator 100. The type of fan can be centrifugal or axial flow, depending on design requirements.

[0040] In some embodiments, the main function of the fan is to promote the flow of cold air inside the refrigerator 100, ensuring that the cold air is evenly distributed to all corners of the refrigerating chamber 11 and the freezing chamber 12, thereby improving the refrigeration efficiency. In the condenser 22, the fan helps to improve the heat exchange efficiency. It discharges the hot air around the condenser 22, so that the condenser 22 can cool the refrigerant more effectively and convert it into a liquid state. In addition, the fan can also help prevent the accumulation of frost to a certain extent, and reduce the accumulation of moisture by enhancing air flow, thereby slowing down the frosting phenomenon inside the refrigerator 100.

[0041] In some embodiments, the condenser 22 is an important component of the refrigeration system 2, and its function is to cool and condense the high-temperature and high-pressure gaseous refrigerant into a high-pressure liquid refrigerant. The condenser 22 dissipates the heat in the refrigerant by exchanging heat with the outside air.

[0042] In some embodiments, the condenser 22 may be air-cooled or water-cooled. For an air-cooled condenser, the surface of the condenser 22 may have a plurality of fins to increase the contact area with the air and enhance the heat dissipation efficiency. In some high-end or special-purpose refrigerators 100, a water-cooled condenser may be used to remove heat through cooling water, further improving the condensation efficiency, especially in a hot environment.

[0043] In some embodiments, the refrigerator compartment heat exchange subsystem may refer to a component for transferring cold to the interior of the refrigerator compartment 11. The refrigerator compartment heat exchange subsystem may include a refrigerator compartment evaporator 23, which functions to reduce the temperature of the refrigerator compartment 11 through the gasification and heat absorption process of the refrigerant when the low-temperature and low-pressure refrigerant flows through the refrigerator compartment evaporator 23. The refrigerator compartment evaporator 23 can evenly distribute the cold, ensure the temperature balance in the refrigerator compartment 11, maintain the temperature between 2°C and 8°C, ensure that the temperature in the refrigerator compartment 11 is suitable for storing food that does not need to be frozen, and extend the shelf life of the food.

[0044] In some embodiments, the refrigerator compartment evaporator 23 can be made of a high thermal conductivity material such as aluminum or copper. Among them, the aluminum evaporator is light in weight and has good thermal conductivity, and can quickly absorb the heat in the refrigerator compartment 11 to ensure uniform and stable temperature. In addition, the refrigerator compartment evaporator 23 can adopt a multi-layer coil structure according to the design of the refrigerator 100 to further enhance the heat exchange effect.

[0045] In some embodiments, the freezer heat exchange subsystem may include a freezer evaporator 24, which is responsible for transferring cold to the inside of the freezer 12. The freezer evaporator 24 absorbs heat in the freezer 12, ensuring that the temperature drops to -18°C or lower, ensuring that food is quickly frozen, thereby preventing food from spoiling, and is suitable for long-term food storage.

[0046] In some embodiments, the design of the freezer compartment evaporator 24 may be a coil evaporator, and the arrangement and surface area of ​​the freezer compartment evaporator 24 may be different depending on the design requirements of the freezer compartment 12. For a freezer compartment 12 that requires a rapid freezing function, the surface area and refrigerant flow rate of the freezer compartment evaporator 24 can be larger to ensure rapid refrigeration.

[0047] In some embodiments, the input port of the refrigerating chamber heat exchange subsystem and the input port of the freezing chamber heat exchange subsystem are respectively connected to the output port of the condenser 22 , and the input port of the condenser 22 is connected to the exhaust port of the compressor 21 .

[0048] like Figure 1 As shown, the refrigerator 100 also includes a controller 3 .

[0049] In some embodiments, the controller 3 is the intelligent core of the refrigerator 100 and is responsible for managing the operating status of the refrigerator 100. It monitors the sensor data of the refrigerator 100 and makes adjustments based on the operating environment. In particular, under fault or abnormal conditions, the controller 3 can control the operation of the compressor 21 according to the set logic.

[0050] In some embodiments, the controller 3 is connected to the refrigeration system 2, and the controller 3 is configured to: when the refrigerator state data meets the fault condition of placing hot objects in the refrigerating chamber 11, if the refrigerator 100 meets the defrosting condition, delay the defrosting program for a first preset time from the time of determining that the refrigerator refrigeration time meets the defrosting condition. The purpose of delaying the first preset time is to ensure that the hot objects are quickly cooled to a lower temperature in the refrigerating chamber 11 through the refrigeration process before considering triggering the defrosting program, so as to avoid the impact of temperature fluctuations on food quality.

[0051] Among them, the refrigerator status data may include 60 parameters such as refrigeration / freezing / variable temperature set temperature, refrigeration / freezing / variable temperature sensor temperature, refrigeration / freezing / variable temperature evaporator sensor temperature, refrigeration / freezing / variable temperature door switch status, refrigeration / freezing / variable temperature refrigeration status, refrigeration / freezing / variable temperature fan frequency, refrigeration / freezing / variable temperature defrost heater switch status, compressor operating frequency, mode status, various sensor faults, fan faults, etc. These data cover the overall operation of the refrigerator 100, and the status of the refrigerator 100 can be accurately evaluated through these parameters.

[0052] In some embodiments, refrigerator status data is acquired in real time through various sensors inside the refrigerator 100. These sensors may include temperature sensors, humidity sensors, pressure sensors, door switch sensors, power sensors, fan speed sensors, and the like.

[0053] In some embodiments, defrosting may refer to a frost layer formed by the evaporator in the refrigerator 100 due to long-term operation, and this frost layer will significantly affect the refrigeration effect. When the moisture in the refrigerator 100 frosts under low temperature conditions, the heat exchange efficiency of the evaporator will decrease. In order to maintain a good refrigeration effect, the controller 3 needs to perform a defrosting program under specific conditions. The controller 3 can monitor the temperature, refrigeration time and accumulation of frost layer of the refrigerating chamber 11 through a temperature sensor, a humidity sensor, etc. to determine whether the defrosting conditions are met.

[0054] According to the refrigerator 100 of the embodiment of the present invention, the refrigerator status data is obtained through the controller. When the refrigerator status data meets the fault condition of placing a hot object in the refrigerating chamber 11, if the refrigerator 100 meets the defrosting condition, the defrosting program is triggered after the first preset time is delayed from the time when the refrigerator refrigeration time is determined to meet the defrosting condition. Among them, the delayed defrosting operation can make the refrigeration system 2 continue to work during the first preset time, so that the temperature in the refrigerating chamber 11 is restored to a stable state as soon as possible after the hot object is placed, avoiding further increase in the temperature of the refrigerating chamber 11 due to the defrosting program being triggered immediately after the hot object is placed, thereby effectively protecting the food in the refrigerator 100 from temperature fluctuations.

[0055] In some embodiments, the controller 3 is further configured to: from the time when it is determined that the refrigerator refrigeration time meets the defrosting condition and the duration reaches a first preset time, if the temperature of the refrigerating chamber 11 is within the normal refrigeration temperature range and the refrigerator 100 still meets the defrosting condition, control the refrigerator 100 to perform the defrosting procedure. It is determined whether the temperature in the refrigerating chamber 11 is maintained within the normal refrigeration range (such as between 2°C and 8°C) to ensure the safe storage of food. This is to prevent the temperature from being too high when the defrosting procedure is performed, which affects the preservation of the food inside the refrigerator 100.

[0056] In some embodiments, the controller 3 is further configured as follows: within a second preset time period, if the number of times the refrigerator status data satisfies the failure condition of placing hot objects in the refrigerating chamber 11 reaches a threshold number of times, when the refrigerator 100 meets the defrost condition again, the refrigerator 100 is controlled to directly execute the defrost program, wherein the second preset time period is greater than the first preset time period.

[0057] In some embodiments, the second preset time length may refer to the time period that the controller 3 uses to monitor whether hot objects are placed in the refrigerating chamber 11. During this period, the controller 3 may collect refrigerator status data to determine the frequency of the fault. The second preset time length may be set according to actual needs, for example, it may be set to 24 hours, which is enough to capture the user's daily usage habits. Through this setting, the controller 3 can obtain a longer time window to identify whether the behavior of placing hot objects in the refrigerating chamber 11 is frequent.

[0058] In some embodiments, the number threshold can be set according to actual needs, for example, it can be set to 2 times, that is, within 24 hours, if the number of times the user continuously puts in hot objects reaches or exceeds 2 times, then when the refrigerator 100 meets the defrosting conditions again, the controller 3 will decide to execute the defrosting program and no longer execute the delayed defrosting logic. This is mainly to ensure that the refrigerator 100 can defrost normally when necessary and reduce the reduction in refrigeration efficiency caused by frost blockage.

[0059] like Figure 2 As shown, the box body 1 is also configured with a variable temperature chamber 13. The variable temperature chamber 13 is a storage space with adjustable temperature inside the refrigerator 100, allowing the user to adjust the storage conditions within the refrigeration, freezing or other temperature ranges as needed. This design is intended to provide more flexible storage options to meet the storage needs of different types of ingredients. The temperature of the variable temperature chamber 13 can be adjusted by the controller 3. For example, it can be set to a lower temperature when storing fresh ingredients, and can be set to a higher temperature when storing other foods to extend the shelf life of the ingredients.

[0060] like Figure 3 As shown, the refrigeration system 2 also includes a variable temperature chamber heat exchange subsystem, which may include a variable temperature chamber evaporator 25, which is used to achieve heat exchange in the variable temperature chamber 13 to ensure that the indoor temperature reaches the user set value. When the temperature of the variable temperature chamber 13 needs to be adjusted, the controller 3 can achieve this by adjusting the working state of the variable temperature chamber heat exchange subsystem, for example, by controlling the flow rate and temperature of the refrigerant.

[0061] In some embodiments, the input port of the variable temperature chamber heat exchange subsystem, the input port of the cold storage chamber heat exchange subsystem and the input port of the freezer chamber heat exchange subsystem are respectively connected to the output port of the condenser 22, which means that the refrigerant can be effectively distributed to each heat exchange subsystem after being condensed in the condenser 22, ensuring that each space (variable temperature chamber 13, cold storage chamber 11, freezer chamber 12) can obtain the required cooling effect.

[0062] In some embodiments, the output port of the variable temperature chamber heat exchange subsystem and the output port of the refrigerating chamber heat exchange subsystem are refluxed and then input into the freezer chamber heat exchange subsystem. This connection method allows the cold airflows of the variable temperature chamber 13 and the refrigerating chamber 11 to act on the freezer chamber 12 together, so that the freezer chamber 12 can utilize the excess cold air of the refrigerating chamber 11, thereby improving the overall efficiency of the refrigeration system 2 and avoiding waste of cold air.

[0063] In some embodiments, the output port of the freezer heat exchange subsystem is connected to the return air port of the compressor 21 through the liquid accumulator 26, forming a complete refrigeration cycle system. The function of the liquid accumulator 26 is to balance the refrigerant flow in the system, ensure that the compressor 21 can operate stably, and maintain an appropriate pressure.

[0064] In some embodiments, the fault type satisfied by the refrigerator status data is determined by a bad fault diagnosis model, such as Figure 4 As shown, the bad fault diagnosis model takes the refrigerator status data as input and the fault type as output, and the fault type includes the fault of placing hot objects in the refrigerating chamber 11.

[0065] Among them, the bad fault diagnosis model is a data-driven algorithm model used to detect possible faults during the operation of the refrigerator 100. Its function is to automatically identify whether the system is in an abnormal state through real-time monitoring of the operating status of the refrigerator, so as to predict and handle potential faults. The model can be trained based on machine learning (ML) or deep learning (DL) algorithms, and learn the difference between normal and abnormal states through a large amount of historical operating data. It can process multiple sensor data from inside the refrigerator 100, such as temperature, humidity, compressor operating status, door opening and closing times, refrigeration time, etc., and use these data to determine whether there is a fault.

[0066] Specifically, taking the deep learning algorithm as an example, multiple sensors inside the refrigerator 100 (such as temperature sensors, humidity sensors, door switch sensors, compressor status sensors, etc.) can collect data regularly. These data may include some noise or incomplete information, so they need to be preprocessed before being directly input into the bad fault diagnosis model, such as: data cleaning (removing invalid or abnormal data), data standardization (scaling the data within a certain range to facilitate model processing), etc. The purpose of preprocessing is to clean and standardize the data to provide high-quality input for subsequent analysis.

[0067] Furthermore, the preprocessed data is input into the fault diagnosis model. Through a large amount of historical data, the deep learning model can be trained and the parameters can be gradually optimized to improve the accuracy of fault detection. After the model is fully trained and optimized, it can process new input data in real time, and can quickly analyze the data and derive the fault type.

[0068] In some embodiments, the controller 3 is further configured to: when the refrigerator status data reaches a preset data amount, perform fault type diagnosis through a bad fault diagnosis model.

[0069] Among them, the preset data volume can be used as a trigger condition for fault diagnosis. By requiring the data volume to reach a certain threshold before diagnosis, the system can avoid making judgments immediately after each data collection. This design effectively prevents the system from frequently triggering diagnosis in a short period of time, reducing unnecessary calculations and resource consumption. In addition, the accumulation of data volume also helps to improve the accuracy of fault diagnosis. Single or small amounts of sensor data may be affected by noise or instantaneous fluctuations, which may lead to misjudgment. If the system performs a diagnosis immediately after each data collection, it may mistakenly believe that the equipment has failed due to abnormal fluctuations. By accumulating a sufficient amount of data before making a diagnosis, the system can better capture the overall operating trend of the refrigerator 100, eliminate the impact of short-term fluctuations, and thus more accurately determine whether there is a fault.

[0070] For example, in order to improve the accuracy of judgment, the preset data volume can be set to n, that is, the model will only make a diagnosis when the amount of data input to the model reaches n. Compared with outputting the diagnosis result after inputting only one piece of data, accumulating n pieces of data helps the model analyze the data change trend within a certain period of time, thereby making a more accurate diagnosis.

[0071] In some embodiments, the preset amount of refrigerator status data is stored in a collection time sequence. This means that during the data collection process, the data is recorded in chronological order. This storage method can help maintain the continuity and consistency of the data, ensuring that the changes in the data over time can be tracked during analysis.

[0072] In some embodiments, the diagnosis result of the fault type is obtained by performing a preset number of operations on the bad fault diagnosis model, wherein the bad fault diagnosis model takes a preset amount of refrigerator status data as input in sequence according to the acquisition time sequence when performing the operation, and each operation takes a refrigerator status data and the previous model output result as input. This structure shows that the model has a recursive characteristic, allowing the model to dynamically adjust its diagnosis based on past results. In this way, the model not only relies on new input data, but also integrates past output results, which helps to improve the ability to identify complex faults.

[0073] Specifically, continuous time series data is used for analysis, that is, n data are collected at intervals of m minutes as a sample input into the model for diagnosis. The calculation logic diagram of the model is as follows Figure 5 As shown, in Figure 5In the figure, x(0), x(1), ..., x(n-1) are the n data that need to be input for one diagnosis, h is the output of the model at the previous moment, and the final output y(n) is the diagnosis result. Therefore, the bad fault diagnosis model of the embodiment of the present invention needs to determine whether the amount of data saved is n (where n is the minimum amount of data required for one diagnosis). When the amount of data is less than n, continue to collect and save data. When the amount of data accumulates to n, call the bad fault diagnosis model for diagnosis. If new data is collected, save the new data and delete the first data in the storage area, call the bad fault diagnosis model for re-diagnosis. This method of sliding window data selection can ensure that even when the amount of data is not large, a better diagnostic effect can be achieved.

[0074] In some embodiments, the controller 3 is further configured to send a fault reminder message when the refrigerator status data meets the condition that a hot object is placed in the refrigerating chamber 11 .

[0075] Among them, the sending of fault reminder information is intended to allow users to take timely actions to prevent the refrigerator's operating efficiency from decreasing due to failure to handle the fault in a timely manner. For example, when the system detects that the user puts hot objects into the refrigerator 100 several times within a week, the refrigeration system 2 of the refrigerator 100 may take longer to restore the internal temperature to a normal level, further increasing energy consumption and possibly affecting the preservation of other ingredients in the refrigerator 100. Through the reminder function, users can wait for the food to cool before putting it into the refrigerator. In this way, users are not only reminded to develop good usage habits, but also informed of the increased energy consumption and potential impact on the ingredients that may be caused by putting in hot objects.

[0076] In some embodiments, the refrigerator 100 includes a reminder device for issuing a reminder or notifying the user in a specific situation. The reminder device can be a display screen, a buzzer, a voice reminder system, or a notification sent through a smartphone application.

[0077] In some embodiments, the refrigerator 100 meets the defrost condition, including: since the last execution of the defrost program, when the cumulative refrigeration operation time of the refrigerator 100 reaches the defrost time threshold, it is determined that the refrigerator 100 meets the defrost condition. The defrost time threshold can be a parameter preset by the refrigerator 100 according to its refrigeration and defrost requirements, which is used to start the defrost program when the refrigeration system 2 frosts to a certain extent, so as to maintain the efficient operation of the system and extend the life of the equipment.

[0078] Figure 6 is a flowchart of fault type diagnosis according to an embodiment of the present invention, such as Figure 6 As shown, the process of fault type diagnosis includes at least steps S1-S12.

[0079] S1, start.

[0080] S2, the refrigerator turns on the intelligent diagnosis function.

[0081] S3, collecting refrigerator status data.

[0082] S4, preprocessing the refrigerator status data.

[0083] S5, accumulating and storing the preprocessed data.

[0084] S6, determine whether the accumulated stored refrigerator status data reaches the preset data amount n, if so, proceed to step S7, if not, return to step S3.

[0085] S7, fault type diagnosis is performed through the bad fault diagnosis model.

[0086] S8, determining that the diagnosis result is normal.

[0087] S9, determining that the diagnosis result is a failure of placing hot objects in the refrigerator compartment.

[0088] S10, controlling the intelligent operation of the refrigerator according to the diagnosis result.

[0089] S11, when the refrigerator status data meets the condition of a hot object being placed in the refrigerator compartment failure, a failure reminder message is sent.

[0090] S12, end.

[0091] In general, the state of the refrigerator 100 is monitored in real time by turning on the intelligent diagnosis function, and the refrigerator state data is continuously collected and pre-processed. After accumulating a preset amount, the fault diagnosis model is used to analyze and identify the fault type (such as hot objects being placed in the refrigerator compartment 11). According to the diagnosis results, the controller 3 can make intelligent operation adjustments to the refrigerator 100 and send fault reminder information when a fault is detected, ensuring that the user is aware of the device status in a timely manner, thereby improving the refrigeration performance of the refrigerator 100.

[0092] Reference below Figure 7 A method of controlling a refrigerator according to an embodiment of the present invention is described.

[0093] Figure 7 is a flow chart of a method for controlling a refrigerator according to an embodiment of the present invention. Figure 7 As shown, the method for controlling a refrigerator at least includes steps S20-S21.

[0094] S20, obtaining refrigerator status data.

[0095] In some embodiments, refrigerator status data may include 60 parameters such as refrigeration / freezing / variable temperature set temperature, refrigeration / freezing / variable temperature sensor temperature, refrigeration / freezing / variable temperature evaporator sensor temperature, refrigeration / freezing / variable temperature door switch status, refrigeration / freezing / variable temperature refrigeration status, refrigeration / freezing / variable temperature fan frequency, refrigeration / freezing / variable temperature defrost heater switch status, compressor operating frequency, mode status, various sensor faults, fan faults, etc.

[0096] In some embodiments, refrigerator status data is acquired in real time through a variety of sensors inside the refrigerator, which may include temperature sensors, humidity sensors, pressure sensors, door switch sensors, power sensors, fan speed sensors, and the like.

[0097] S21, when the refrigerator status data meets the fault condition of placing a hot object in the refrigerator compartment, if the refrigerator meets the defrost condition, the defrost program is triggered after delaying for a first preset time period from the time when it is determined that the refrigerator refrigeration time meets the defrost condition.

[0098] In some embodiments, the specific value of the first preset time can be set according to design requirements, for example, the first preset time can be set to 6 hours. This means that when it is detected that hot objects are placed in the refrigerator, the controller may not trigger the defrost program within 6 hours after confirming that the refrigeration time of the refrigerator meets the defrost condition.

[0099] In some embodiments, the method for controlling a refrigerator further includes: starting from determining that the refrigerator refrigeration time meets the defrosting condition and the duration reaches a first preset duration, if the temperature of the refrigerator compartment is within the normal refrigeration temperature range and the refrigerator still meets the defrosting condition, controlling the refrigerator to execute a defrosting procedure. Wherein, judging whether the temperature in the refrigerator compartment is maintained within the normal refrigeration range (e.g., between 2°C and 8°C) can ensure the safe storage of food. This is to prevent the temperature from being too high when executing the defrosting procedure, affecting the preservation of food inside the refrigerator.

[0100] Figure 8 FIG. 1 is a flow chart of intelligent control of a refrigerator when hot objects are placed in the refrigerator compartment according to an embodiment of the present invention. Figure 8 As shown, the intelligent control process of the refrigerator when hot objects are placed in the refrigerator compartment includes at least steps S30-S36.

[0101] S30, obtaining refrigerator status data.

[0102] S31, according to the refrigerator status data, determining that the fault type is a hot object placed in the refrigerator compartment fault.

[0103] S32, determining whether the duration of the refrigerator refrigeration time satisfying the defrosting condition has reached a second preset duration, if so, proceeding to step S33, if not, returning to step S30.

[0104] S33, determining whether the temperature of the refrigerating chamber is within the normal refrigerating temperature range, if so, proceeding to step S34, if not, proceeding to step S35.

[0105] S34, determining whether the refrigerator still meets the defrosting conditions, if yes, proceeding to step S36, if not, returning to step S30.

[0106] S35, waiting for the temperature of the refrigerating chamber to be within a normal refrigerating temperature range.

[0107] S36, controlling the refrigerator to execute a defrost procedure.

[0108] In some embodiments, when the refrigerator status data meets the fault condition of placing a hot object in the freezer, if the refrigerator meets the defrost condition, the defrost program can also be triggered after delaying for a first preset time period starting from determining that the refrigerator refrigeration time meets the defrost condition.

[0109] Fig. 9 FIG. 1 is a flow chart of intelligent control of a refrigerator when hot objects are placed in the freezer compartment according to an embodiment of the present invention. Fig. 9 As shown, the intelligent control process of the refrigerator when hot objects are placed in the freezer compartment includes at least steps S100-S106.

[0110] S100, obtaining refrigerator status data.

[0111] S101, according to the refrigerator status data, determine that the fault type is a hot object placed in the freezer compartment fault.

[0112] S102, determining whether the duration of the refrigerator refrigeration time satisfying the defrosting condition has reached a second preset duration, if so, proceeding to step S103, if not, returning to step S100.

[0113] S103, determine whether the temperature of the freezer compartment is within the normal freezing temperature range, if so, proceed to step S104, if not, proceed to step S105.

[0114] S104, determining whether the refrigerator still meets the defrosting conditions, if yes, proceeding to step S106, if not, returning to step S100.

[0115] S105, waiting for the temperature of the freezing chamber to be within the normal freezing temperature range.

[0116] S106, controlling the refrigerator to execute a defrost procedure.

[0117] In general, when a hot item is placed in the freezer, the delayed defrosting method is used to restore the normal temperature inside each compartment. This strategy effectively avoids the refrigerator from entering the defrosting process immediately after the hot item is placed, thereby preventing the defrosting operation from causing the temperature of the refrigerator or freezer to rise further, which would have a negative impact on the food inside.

[0118] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0119] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A refrigerator, characterized in that: include: A box body, wherein the box body is at least configured with a refrigerating chamber and a freezing chamber; A refrigeration system, the refrigeration system comprising a compressor, a condenser, a refrigerating chamber heat exchange subsystem and a freezing chamber heat exchange subsystem, the input port of the refrigerating chamber heat exchange subsystem and the input port of the freezing chamber heat exchange subsystem are respectively connected to the output port of the condenser, and the input port of the condenser is connected to the exhaust port of the compressor; A controller is connected to the refrigeration system, and the controller is configured to: Refrigerator status data is obtained. When the refrigerator status data meets the fault condition of placing a hot object in the refrigerating chamber, if the refrigerator meets the defrost condition, the defrost program is triggered after delaying for a first preset time period from the time when it is determined that the refrigerator refrigeration time meets the defrost condition.

2. The refrigerator according to claim 1, characterized in that: The controller is also configured to: starting from determining that the refrigerator refrigeration time meets the defrost condition and the duration reaches the first preset time, if the temperature of the refrigeration chamber is within the normal refrigeration temperature range and the refrigerator still meets the defrost condition, control the refrigerator to execute the defrost program.

3. The refrigerator according to claim 1, characterized in that: The controller is also configured to: within a second preset time period, if the number of times that the refrigerator status data meets the fault condition of placing hot objects in the refrigerating chamber reaches a threshold number, when the refrigerator meets the defrost condition again, control the refrigerator to directly execute the defrost program, wherein the second preset time period is greater than the first preset time period.

4. The refrigerator according to claim 1, characterized in that: The box body is also configured with a temperature-changing chamber; The refrigeration system further comprises a variable temperature room heat exchange subsystem, and the variable temperature room heat exchange subsystem is used for heat exchange of the variable temperature room; The input port of the variable temperature chamber heat exchange subsystem, the input port of the refrigerating chamber heat exchange subsystem and the input port of the freezer chamber heat exchange subsystem are respectively connected to the output port of the condenser, the output port of the variable temperature chamber heat exchange subsystem is refluxed with the output port of the refrigerating chamber heat exchange subsystem and then input to the freezer chamber heat exchange subsystem, and the output port of the freezer chamber heat exchange subsystem is connected to the return air port of the compressor through a liquid reservoir.

5. The refrigerator according to claim 1, characterized in that: The controller is also configured to determine the fault type satisfied by the refrigerator status data through a bad fault diagnosis model, wherein the bad fault diagnosis model takes the refrigerator status data as input and the fault type as output, and the fault type includes a fault of placing hot objects in the refrigerator compartment.

6. The refrigerator according to claim 5, characterized in that: The controller is further configured to: when the refrigerator status data reaches a preset data amount, perform the fault type diagnosis through the bad fault diagnosis model.

7. The refrigerator according to claim 6, characterized in that: The refrigerator status data of the preset data volume is stored in a collection time series; The diagnosis result of the fault type is obtained by performing a preset number of operations on the bad fault diagnosis model, wherein the bad fault diagnosis model takes the preset data amount of refrigerator status data as input in sequence according to the acquisition sequence when performing the operation, and each operation takes one piece of the refrigerator status data and the previous model output result as input.

8. The refrigerator according to any one of claims 1 to 7, characterized in that: The controller is further configured to send a fault reminder message when the refrigerator status data meets the condition of a hot object being placed in the refrigerating chamber.

9. The refrigerator according to claim 1, characterized in that: The refrigerator further includes a reminder device, and the refrigerator meets the defrosting condition, including: When the accumulated refrigeration operation time of the refrigerator reaches the defrost time threshold since the last defrost program was executed, it is determined that the refrigerator meets the defrost condition.

10. A method for controlling a refrigerator, characterized in that: include: Get refrigerator status data; When the refrigerator status data meets the fault condition of placing a hot object in the refrigerating chamber, if the refrigerator meets the defrost condition, the defrost program is triggered after delaying for a first preset time period from the time when it is determined that the refrigerator refrigeration time meets the defrost condition.

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