Refrigerator air door fault judgment method and device, refrigerator and storage medium
Through the analysis of wind pressure information, the problem of failure to detect the failure of the wind door of the air -cooled refrigerator in time, and realized the timely detection of the wind door failure and the stability of the refrigerator refrigeration effect.
Patent Information
- Application Number
- CN202411580260.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-01-24
AI Technical Summary
In existing air-cooled refrigerators, the damper failure cannot be detected in time, which affects the cooling effect.
By controlling the operation of the fan, the wind pressure information of the damper when executing the opening and closing instructions is obtained, and the fault information of the damper is determined based on the wind pressure information and the opening and closing instructions.
It realizes timely detection of damper failure and ensures the stability of the refrigerator's cooling effect.
Smart Images
Figure CN119353871A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of refrigerators, and in particular, relates to a method and device for judging a damper fault of a refrigerator, a refrigerator, and a storage medium. Background Art
[0002] An air-cooled refrigerator is a refrigerator that uses a fan to blow cold air into the storage compartment through the air duct and the damper to achieve compartment cooling. Some air-cooled refrigerators currently on the market control the temperature of the refrigerated compartment by controlling the opening and closing of the damper and the rotation of the fan. However, when the damper fails, the damper cannot be controlled as expected, which affects the refrigeration effect of the refrigerator. Therefore, how to detect the failure of the damper in a timely manner has become an urgent problem to be solved. Summary of the invention
[0003] The embodiments of the present application provide a refrigerator damper fault judgment method, device, refrigerator and storage medium, which can solve the problem of how to detect refrigerator damper faults in a timely manner.
[0004] To achieve the above objectives, this application provides the following technical solutions:
[0005] A method for judging a damper failure of a refrigerator, the refrigerator comprising a damper and a fan, wherein the fan drives air flow near the damper when it is running; the method for judging a damper failure comprises:
[0006] Controlling the fan to be in a running state;
[0007] In response to an opening and closing instruction for the damper, obtaining wind pressure information on the surface of the damper when the damper executes the opening and closing instruction;
[0008] Fault information of the damper is determined according to the wind pressure information and the opening and closing instruction.
[0009] In some embodiments, determining the fault information of the damper according to the wind pressure information and the opening and closing instruction includes:
[0010] Obtaining the target rotation duration and target wind pressure value corresponding to the opening and closing instructions;
[0011] Extracting from the wind pressure information a first wind pressure value on the surface of the damper when the damper executes the target rotation time of the opening and closing instruction;
[0012] If the difference between the first wind pressure value and the target wind pressure value is less than or equal to a first preset value, it is confirmed that the damper is working normally;
[0013] If the difference between the first wind pressure value and the target wind pressure value is greater than a first preset value, it is confirmed that the damper has a fault.
[0014] In some embodiments, obtaining the target wind pressure value corresponding to the opening and closing instruction includes:
[0015] Obtaining a target position corresponding to the opening and closing instruction;
[0016] The target position is input into an electrical signal model to obtain a corresponding target wind pressure value, wherein the electrical signal model is trained based on at least one set of sample data, and the sample data includes a sample position and a sample wind pressure value corresponding to the sample position.
[0017] In some embodiments, after confirming that the damper has a fault, determining the fault information of the damper according to the wind pressure information further includes:
[0018] Extracting from the wind pressure information the wind pressure change rate of the wind pressure on the surface of the damper within the target rotation time of the damper executing the opening and closing instruction;
[0019] The fault type of the damper is determined according to the wind pressure change rate.
[0020] In some embodiments, the damper includes a damper body and a motor, the motor is used to drive the damper body to move, and determining the fault type of the damper according to the wind pressure change rate includes:
[0021] Get the preset change rate;
[0022] If the wind pressure change rate is greater than the preset change rate, it is confirmed that the fault type of the damper is a damper body fault; otherwise, it is confirmed that the fault type of the damper is a motor fault.
[0023] In some embodiments, determining the fault information of the damper according to the wind pressure information and the opening and closing instruction includes:
[0024] Obtaining the target rotation duration and target change curve corresponding to the opening and closing instructions;
[0025] Fitting a wind pressure variation curve of the wind pressure on the surface of the damper within the target rotation time of the damper executing the opening and closing instruction according to the wind pressure information;
[0026] Whether the damper has a fault is determined based on a comparison result between the wind pressure variation curve and the target variation curve.
[0027] In some embodiments, determining whether the damper has a fault according to a comparison result between the wind pressure change curve and the target change curve includes:
[0028] Calculating the degree of overlap between the wind pressure variation curve and the target variation curve;
[0029] If the overlap degree is higher than or equal to the second preset value, it is confirmed that the damper is working normally;
[0030] If the overlap degree is lower than a second preset value, it is confirmed that the damper is faulty.
[0031] In some embodiments, the refrigerator includes a damper and a fan, and the fan drives the air near the damper to flow when it is running; the damper fault judgment device includes:
[0032] A control module, used for controlling the fan to be in a running state;
[0033] An acquisition module, for responding to an opening and closing instruction for the damper, and acquiring wind pressure information on the surface of the damper when the damper executes the opening and closing instruction;
[0034] A judgment module is used to determine the fault information of the damper according to the wind pressure information and the opening and closing instructions.
[0035] A refrigerator, comprising:
[0036] throttle;
[0037] A fan, which drives the air near the damper to flow when in operation;
[0038] A wind pressure detection device, arranged on the damper, for detecting the wind pressure on the surface of the damper;
[0039] A processing module is connected to the wind pressure detection device, the fan and the damper, and is used to:
[0040] Controlling the fan to be in a running state;
[0041] In response to an opening and closing instruction for the damper, obtaining wind pressure information on the surface of the damper when the damper executes the opening and closing instruction;
[0042] Fault information of the damper is determined according to the wind pressure information and the opening and closing instruction.
[0043] A storage medium stores a computer program, which executes the above-mentioned damper fault judgment method when the computer program is running.
[0044] The refrigerator damper fault judgment method, device, refrigerator and storage medium provided in the embodiments of the present application analyze the wind pressure information on the surface of the damper when it executes the opening and closing instructions to judge whether the damper is opened and closed according to the opening and closing information corresponding to the opening and closing instructions, so as to timely determine the fault condition of the damper. BRIEF DESCRIPTION OF THE DRAWINGS
[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.
[0046] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.
[0047] Figure 1 A flowchart of a refrigerator damper fault diagnosis method provided in an embodiment of the present application.
[0048] Figure 2 A schematic structural diagram of a refrigerator damper fault diagnosis device provided in an embodiment of the present application.
[0049] Figure 3 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application. DETAILED DESCRIPTION
[0050] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
[0051] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0052] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.
[0053] The use of "suitable for" or "configured to" in this application is meant to be open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. In addition, the use of "based on" is meant to be open and inclusive, because the process, step, calculation or other action "based on" one or more stated conditions or values can be based on additional conditions or values beyond the stated values in practice.
[0054] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.
[0055] The present application provides a method for determining a damper failure of a refrigerator, which may be a single-door, double-door, side-by-side, French, cross-door refrigerator or other type of refrigerator. Figure 1 , Figure 1 Flow chart of a method for determining a damper failure of a refrigerator provided in an embodiment of the present application. The refrigerator includes a damper and a fan, and when the fan is running, the air near the damper is driven to flow. The method for determining a damper failure includes the following steps S101 to S103:
[0056] Step S101: Control the fan to be in running state;
[0057] It should be noted that the refrigerator realizes the return air from the refrigeration chamber to the storage compartment through the return air duct, and the damper is arranged in the return air duct. By adjusting the opening of the damper, the amount of cold air entering the storage compartment can be controlled to achieve temperature control of the storage compartment. The fan can be arranged in the return air duct to drive the air flow during operation to accelerate the air convection between the refrigeration chamber and the storage compartment, so that the cold air enters the storage compartment, and at the same time accelerates the air flow near the damper to generate wind pressure on the surface of the damper.
[0058] The fan can be turned on based on the cooling demand of the corresponding storage room, or can be turned on based on the demand for judging the fault of the damper, or can be turned on in other scenarios where it is needed. It can be understood that the damper fault judgment method of the present application starts to execute in response to the opening and closing instructions of the damper. Before executing the fault judgment, if it is detected that the fan is already in the running state, the fan is controlled to maintain the running state, and if it is detected that the fan is in the stopped running state, the fan is controlled to start running. In one usage scenario, in the initial state, the storage compartment of the refrigerator is in a refrigeration stop state, at which time the damper is closed and the fan stops running; in response to the refrigeration request of the storage compartment, the fan is controlled to start, and the damper is opened based on the damper opening instruction and the fault condition of the damper is determined; during the refrigeration process of the cold storage compartment, an opening and closing instruction for the damper may also be issued according to the temperature of the storage compartment, so that the damper rotates to adjust the air outlet air volume to achieve temperature control, and during the process of the damper executing the opening and closing instruction, the fan is maintained in the running state; if it is a closing instruction for the damper, the fan is controlled to be closed after the damper closing instruction is executed and / or the fault judgment is completed.
[0059] Step S102: in response to an opening and closing instruction for the damper, obtaining wind pressure information on the surface of the damper when executing the opening and closing instruction;
[0060] It should be noted that the response to the opening and closing instruction for the damper may be an instruction to control the damper to open, control the damper to close, or control the damper to open to a preset angle. The opening and closing instruction for the damper may be issued by the refrigerator based on the actual temperature of the storage compartment detected, or may be manually input by the user. Exemplarily, when it is detected that the actual temperature in the compartment reaches the preset refrigeration start-up point temperature, in response to the door opening instruction, a first drive signal is issued to the drive motor of the damper so that the motor drives the damper to open; when it is detected that the actual temperature in the compartment reaches the preset refrigeration shut-off point temperature, in response to the door closing instruction, a second drive signal is issued to the drive motor of the damper so that the motor drives the damper to close.
[0061] The damper is usually driven by a stepper motor through a transmission mechanism to achieve rotation, and the control of the stepper motor cannot provide feedback on whether the damper has actually executed the control step command. However, when the damper rotates under the drive of the motor, the wind pressure exerted on the damper by the airflow generated by the fan operation will change as the opening angle of the damper changes. Based on this, the size of the wind pressure on the damper can reflect the actual opening and closing state of the damper. After understanding the actual opening and closing state of the damper, it is also possible to judge whether the damper is opening and closing normally based on whether the actual opening and closing state is consistent with the target opening and closing state.
[0062] Step S103: Determine the fault information of the damper according to the wind pressure information and the opening and closing instructions.
[0063] The opening and closing instructions for the damper usually have corresponding information such as the target opening and closing angle or the target position to inform the specific position to which the damper needs to be moved, such as fully open, partially open or fully closed. In addition, the wind pressure information can reflect the actual opening and closing state of the damper when the opening and closing instructions are executed. It should be noted that when the damper of the refrigerator is operating normally, the damper can be normally rotated to the target position or the target opening and closing angle according to the opening and closing instructions, so that the wind pressure information detected in the process will be roughly consistent with expectations; and when the damper cannot move normally due to its own fault or ice blockage of the air outlet, it cannot be rotated to the target position within the normal time, so the wind pressure information detected in the process will also be far from expectations. Based on this, the fault information of the damper can be judged according to the wind pressure information and the opening and closing instructions.
[0064] The refrigerator damper fault judgment method provided in the embodiment of the present application analyzes the wind pressure information on the surface of the damper when it executes the opening and closing instructions to judge whether the damper is opened and closed according to the opening and closing information corresponding to the opening and closing instructions, so as to timely determine the fault condition of the damper.
[0065] Regarding how to determine the fault information of the damper according to the wind pressure information and the opening and closing instructions, the present application provides a first implementation method, that is, determining the fault information of the damper according to the wind pressure information and the opening and closing instructions includes:
[0066] Obtain the target rotation duration and target wind pressure value corresponding to the opening and closing instructions;
[0067] Extracting from the wind pressure information the first wind pressure value on the surface of the damper when the damper executes the target rotation time of the opening and closing instruction;
[0068] If the difference between the first wind pressure value and the target wind pressure value is less than or equal to the first preset value, it is confirmed that the damper is working normally;
[0069] If the difference between the first wind pressure value and the target wind pressure value is greater than the first preset value, it is confirmed that the damper is faulty.
[0070] Among them, the target rotation time indicates the time required for the damper to move from the initial position to the target position when the damper operates normally. The target rotation time can be directly obtained from the preset parameter library, or it can be calculated by the refrigerator processing unit according to the target rotation angle corresponding to the opening and closing instructions and the motor speed. The target rotation angle can be determined by the processing unit according to the current position and target position of the damper. Exemplarily, the opening and closing instructions are used to instruct the damper to open from 0° to 90°, then the target rotation time is the time required to drive the damper to rotate 90° based on the current speed of the damper motor.
[0071] The target wind pressure value indicates the wind pressure value that the damper is subjected to when it rotates to the target position. It is understandable that when the damper is operating normally, the damper should rotate to the target position when executing the target rotation time of the opening and closing instruction, so that the wind pressure value it is subjected to changes to the target wind pressure value. Based on this, by comparing and analyzing the first wind pressure value with the target wind pressure value, it is possible to determine whether the damper is actually rotated to the target position, and then judge the fault condition of the damper. For example, if the detected first wind pressure value matches the target wind pressure value, it can be confirmed that the damper is operating normally; if the detected first wind pressure value does not match the target wind pressure value, it can be confirmed that the damper is faulty.
[0072] Considering that the wind pressure value is also affected by other factors such as temperature, humidity, and altitude, it is difficult to ensure that the measured first wind pressure value is completely consistent with the target wind pressure value when the damper is normal. In order to avoid misjudgment, a certain error between the first wind pressure value and the target wind pressure value can be allowed, that is, a first preset value is set as the error value. When the difference between the first wind pressure value and the target wind pressure value is within the first preset value, it is considered that the damper is working normally. Only when the difference between the first wind pressure value and the target wind pressure value exceeds the first preset value, it is considered that the damper is faulty.
[0073] Among them, with respect to the method for obtaining the target wind pressure value, the present application provides an embodiment, and obtaining the target wind pressure value corresponding to the opening and closing instruction includes:
[0074] Get the target position corresponding to the opening and closing instructions;
[0075] The target position is input into the electrical signal model to obtain the corresponding target wind pressure value, wherein the electrical signal model is trained based on at least one set of sample data, and the sample data includes a sample position and a sample wind pressure value corresponding to the sample position.
[0076] It should be noted that the target position is the final position reached when the damper is rotating to execute the opening and closing command when operating normally. It indicates the angle that the damper needs to rotate from the current position to the target position. The target opening angle can be directly obtained from the preset parameter library, or it can be calculated by the refrigerator processing unit based on the initial position and the target position corresponding to the opening and closing command.
[0077] The sample data may be obtained by a tester through testing. For example, the tester obtains a number of sample data by testing the wind pressure values corresponding to the damper at several different positions. The data in the sample data should ensure accuracy, and the data volume should be sufficient to ensure the calculation accuracy of the electrical signal model.
[0078] The sample data may include initial sample data pre-stored in the memory, and may also include actual data collected during the operation of the refrigerator. For example, after each opening and closing control of the damper is performed, if it is confirmed that the damper has no fault, the target position obtained during the fault judgment process and the measured wind pressure value corresponding to the target position are stored in the sample data. In this way, the electrical signal model can be continuously learned to improve the compatibility with the refrigerator, thereby improving the accuracy of the electrical signal model.
[0079] Regarding the method for obtaining the target wind pressure value, the present application provides an embodiment, that is, obtaining the target rotation duration corresponding to the opening and closing instruction includes:
[0080] Get the target position corresponding to the opening and closing instructions;
[0081] Determine the target rotation angle according to the initial position and target position of the damper;
[0082] Get the preset speed of the damper;
[0083] The target rotation time is calculated based on the target rotation angle and the preset rotation speed.
[0084] Exemplarily, the opening and closing instruction is used to instruct the damper to open from 0° to 90°, the preset rotation speed of the damper is 6RPM, then the target rotation angle is 90°, and the target rotation time is calculated to be 2.5 seconds.
[0085] In some embodiments, after confirming that the damper has a fault, determining the fault information of the damper according to the wind pressure information further includes:
[0086] Extracting the wind pressure change rate of the wind pressure on the surface of the damper within the target rotation time of the damper executing the opening and closing command from the wind pressure information;
[0087] Determine the damper failure type based on the wind pressure change rate.
[0088] The damper includes a damper body and a motor. The motor is used to drive the damper body to move. It should be noted that the types of damper failures include damper motor failures and damper body failures. Among them, damper body failures include damper body deformation, damper freezing, ice blockage, etc. When the damper motor fails, the damper motor cannot be started, the damper body will not rotate, and the wind pressure on the damper will not change, and the change in the wind pressure change rate cannot be captured. When the damper body fails, the damper body can rotate, but there will be jamming or air leakage during the rotation process, making the wind pressure change abnormal. Based on this, the type of damper failure can be determined according to the wind pressure change rate of the wind pressure on the damper surface.
[0089] Exemplarily, determining the fault type of the damper according to the wind pressure change rate includes:
[0090] Get the preset change rate;
[0091] If the wind pressure change rate is greater than the preset change rate, it is confirmed that the fault type of the damper is a damper body fault, otherwise it is confirmed that the fault type of the damper is a motor fault.
[0092] Among them, the preset change rate can be a value close to zero. When the wind pressure change rate is less than or equal to the preset change rate, it can be determined that the damper does not rotate due to a motor failure; when the wind pressure change rate is greater than the preset change rate, it can be determined that the damper does rotate, but there is a rotation abnormality caused by a damper body failure.
[0093] The above-mentioned embodiment provided by the present application can not only determine whether the damper is faulty, but also determine the type of fault of the damper by analyzing the wind pressure value and the wind pressure change rate in the wind pressure information, which is beneficial to reduce the detection cost and maintenance difficulty, and helps to improve the refrigeration efficiency and service life of the refrigerator.
[0094] Regarding how to determine the fault information of the damper according to the wind pressure information and the opening and closing instructions, the present application also provides another implementation method, that is, determining the fault information of the damper according to the wind pressure information and the opening and closing instructions includes:
[0095] Obtain the target rotation duration and target change curve corresponding to the opening and closing instructions;
[0096] According to the wind pressure information, a wind pressure variation curve of the wind pressure on the surface of the air door within the target rotation time of the air door executing the opening and closing command is fitted;
[0097] Based on the comparison result between the wind pressure change curve and the target change curve, determine whether the damper has a fault.
[0098] Among them, the target change curve should reflect the change of wind pressure on the damper during the target rotation time of the opening and closing command when the damper is operating normally. Different opening and closing commands correspond to different changes in wind pressure values. This application can determine whether the damper actually opens and closes as expected by comparing and analyzing the wind pressure change curve with the target change curve, and then judge the fault condition of the damper.
[0099] For example, considering that the wind pressure value may be affected by other factors such as temperature, humidity, and altitude, it is difficult to ensure that the measured wind pressure change curve is completely consistent with the target change curve when the damper is operating normally. In order to avoid misjudgment, determining whether the damper has a fault based on the comparison result between the wind pressure change curve and the target change curve may include:
[0100] Calculate the degree of overlap between the wind pressure change curve and the target change curve;
[0101] If the overlap degree is higher than or equal to the second preset value, it is confirmed that the damper is working normally;
[0102] If the overlap is lower than the second preset value, it is confirmed that the damper is faulty.
[0103] In some other embodiments, before determining the fault information of the damper according to the comparison result between the wind pressure change curve and the target change curve, the target change curve can also be corrected by continuous learning. For example, after each fault judgment, if it is confirmed that the damper has no fault, the target change curve is corrected according to the actual wind pressure change data obtained in this fault judgment.
[0104] Optionally, after confirming that the damper has a fault, determining the fault information of the damper according to the wind pressure information and the opening and closing instructions may also include:
[0105] Obtaining a third preset value, where the third preset value is less than the second preset value;
[0106] If the overlap degree is higher than or equal to the third preset value, it is confirmed that the fault type of the damper is a damper body fault;
[0107] If the overlap degree is lower than the third preset value, it is confirmed that the fault type of the damper is a motor fault.
[0108] The above-mentioned embodiment provided by the present application can not only determine whether the damper is faulty, but also determine the type of fault of the damper by comparing and analyzing the actual wind pressure change curve with the target change curve, which is beneficial to reduce the detection cost and maintenance difficulty, and helps to improve the refrigeration efficiency and service life of the refrigerator.
[0109] The refrigerator damper fault judgment method provided in the embodiment of the present application analyzes the wind pressure information on the surface of the damper when it executes the opening and closing instructions to judge whether the damper is opened and closed according to the opening and closing information corresponding to the opening and closing instructions, so as to timely determine the fault condition of the damper.
[0110] The present application also provides a refrigerator damper fault judgment device. For example, see Figure 2 , Figure 2 The schematic diagram of the structure of the refrigerator damper fault judgment device provided in the embodiment of the present application is as follows. The refrigerator includes a damper and a fan, and the fan drives the air flow near the damper when it is running; the damper fault judgment device includes a control module 210, an acquisition module 220 and a judgment module 230.
[0111] Among them, the control module 210 is used to control the fan to be in operation state; the acquisition module 220 is used to respond to the opening and closing instructions for the damper, and obtain the wind pressure information on the surface of the damper when executing the opening and closing instructions; the judgment module 230 is used to determine the fault information of the damper based on the wind pressure information and the opening and closing instructions.
[0112] The refrigerator damper fault judgment device provided in the embodiment of the present application analyzes the wind pressure information on the surface of the damper when it executes the opening and closing instructions to judge whether the damper is opened and closed according to the opening and closing information corresponding to the opening and closing instructions, and thus can promptly determine the fault condition of the damper.
[0113] The present application also provides a refrigerator, for example, see Figure 3 , Figure 3 The refrigerator 300 includes a damper 310 , a fan 320 , a wind pressure detection device 330 and a processing module 340 .
[0114] Among them, when the fan 320 is running, it drives the air flow near the damper 310; the wind pressure detection device 330 is arranged on the damper 310, and is used to detect the wind pressure on the surface of the damper 310; the processing module 340 is connected with the wind pressure detection device 330, the fan 320 and the damper 310, and is used to: control the fan 320 to be in an operating state; respond to the opening and closing instructions for the damper 310, and obtain the wind pressure information on the surface of the damper 310 when executing the opening and closing instructions; determine the fault information of the damper 310 according to the wind pressure information and the opening and closing instructions.
[0115] The refrigerator 300 realizes the return of air from the refrigeration chamber to the storage compartment through the return air duct. The air door 310 is arranged in the return air duct. By adjusting the opening of the air door 310, the amount of cold air entering the storage compartment can be controlled to achieve temperature control of the storage compartment. The fan 320 can be arranged in the return air duct to drive the air flow during operation to accelerate the air convection between the refrigeration chamber and the storage compartment, so that the cold air enters the storage compartment, and at the same time accelerates the air flow near the air door 310 to generate wind pressure on the surface of the air door 310.
[0116] The refrigerator provided in the embodiment of the present application analyzes the wind pressure information on the surface of the damper when it executes the opening and closing instructions to determine whether the damper is opened and closed according to the opening and closing information corresponding to the opening and closing instructions, and thus can promptly determine the fault condition of the damper.
[0117] An embodiment of the present application further provides a storage medium having a computer program stored thereon, and when the computer program is run, the damper fault determination method in any embodiment is executed.
[0118] Exemplarily, the above-mentioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or magnetic tapes, etc.), optical disks (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks or key drives, etc.). The various computer-readable storage media described in the embodiments of the present application may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.
[0119] The above is a detailed introduction to the refrigerator damper fault judgment method, device, refrigerator and storage medium provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A method for judging a refrigerator air door fault, characterized in that: The refrigerator comprises a damper and a fan, and the fan drives the air near the damper to flow when it is running; The damper fault judgment method comprises: Controlling the fan to be in a running state; In response to an opening and closing instruction for the damper, obtaining wind pressure information on the surface of the damper when the damper executes the opening and closing instruction; Fault information of the damper is determined according to the wind pressure information and the opening and closing instruction.
2. The refrigerator damper fault judgment method according to claim 1, characterized in that: The determining of the fault information of the damper according to the wind pressure information and the opening and closing instruction includes: Obtaining the target rotation duration and target wind pressure value corresponding to the opening and closing instructions; Extracting from the wind pressure information a first wind pressure value on the surface of the damper when the damper executes the target rotation time of the opening and closing instruction; If the difference between the first wind pressure value and the target wind pressure value is less than or equal to a first preset value, it is confirmed that the damper is working normally; If the difference between the first wind pressure value and the target wind pressure value is greater than a first preset value, it is confirmed that the damper has a fault.
3. The refrigerator damper fault judgment method according to claim 2, characterized in that: Obtaining the target wind pressure value corresponding to the opening and closing instruction includes: Obtaining a target position corresponding to the opening and closing instruction; The target position is input into an electrical signal model to obtain a corresponding target wind pressure value, wherein the electrical signal model is trained based on at least one set of sample data, and the sample data includes a sample position and a sample wind pressure value corresponding to the sample position.
4. The refrigerator damper fault judgment method according to claim 2, characterized in that: After confirming that the damper has a fault, determining the fault information of the damper according to the wind pressure information further includes: Extracting from the wind pressure information the wind pressure change rate of the wind pressure on the surface of the damper within the target rotation time of the damper executing the opening and closing instruction; The fault type of the damper is determined according to the wind pressure change rate.
5. The refrigerator damper fault judgment method according to claim 4, characterized in that: The damper includes a damper body and a motor, wherein the motor is used to drive the damper body to move, and the method of determining the fault type of the damper according to the wind pressure change rate includes: Get the preset change rate; If the wind pressure change rate is greater than the preset change rate, it is confirmed that the fault type of the damper is a damper body fault; otherwise, it is confirmed that the fault type of the damper is a motor fault.
6. The refrigerator damper fault judgment method according to claim 1, characterized in that: The determining of the fault information of the damper according to the wind pressure information and the opening and closing instruction includes: Obtaining the target rotation duration and target change curve corresponding to the opening and closing instructions; Fitting a wind pressure variation curve of the wind pressure on the surface of the damper within the target rotation time of the damper executing the opening and closing instruction according to the wind pressure information; Whether the damper has a fault is determined based on a comparison result between the wind pressure variation curve and the target variation curve.
7. The refrigerator damper fault judgment method according to claim 6, characterized in that: Determining whether the damper has a fault according to a comparison result between the wind pressure change curve and the target change curve includes: Calculating the degree of overlap between the wind pressure variation curve and the target variation curve; If the overlap degree is higher than or equal to the second preset value, it is confirmed that the damper is working normally; If the overlap degree is lower than a second preset value, it is confirmed that the damper is faulty.
8. A refrigerator damper fault judgment device, characterized in that: The refrigerator comprises a damper and a fan, and the fan drives the air near the damper to flow when it is running; The damper fault judgment device comprises: A control module, used for controlling the fan to be in a running state; An acquisition module, for responding to an opening and closing instruction for the damper, and acquiring wind pressure information on the surface of the damper when the damper executes the opening and closing instruction; A judgment module is used to determine the fault information of the damper according to the wind pressure information and the opening and closing instructions.
9. A refrigerator, characterized in that: include: throttle; A fan, which drives the air near the damper to flow when in operation; A wind pressure detection device, arranged on the damper, for detecting the wind pressure on the surface of the damper; A processing module is connected to the wind pressure detection device, the fan and the damper, and is used to: Controlling the fan to be in a running state; In response to an opening and closing instruction for the damper, obtaining wind pressure information on the surface of the damper when the damper executes the opening and closing instruction; Fault information of the damper is determined according to the wind pressure information and the opening and closing instruction.
10. A storage medium, characterized in that: A computer program is stored thereon, and when the computer program is run, the damper fault judgment method according to any one of claims 1 to 7 is executed.