Condenser fault detection method and device, refrigerator and storage medium
By detecting the vibration frequency of the refrigerator condenser and judging its fault status, the time-consuming problem in the existing technology is solved, fast and accurate fault detection is achieved, and the refrigerator's refrigeration effect and storage efficiency are improved.
Patent Information
- Application Number
- CN202411232722.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2024-12-13
AI Technical Summary
In the prior art, it is indirectly judged that the condenser failure is likely to take too long based on the temperature changes of the refrigerator compartment, resulting in poor storage effect of items in the refrigerator.
By detecting the vibration frequency of the condenser, it is determined whether there is a fault, including obtaining the vibration frequency at a preset time interval during the detection period, and determining the working state of the condenser based on regular changes or irregular changes, using the fluctuation degree of the vibration frequency as Evaluation indicators.
It realizes rapid and accurate detection of condenser failures, improves the refrigeration effect and storage efficiency of the refrigerator, and reduces abnormal heat problems caused by condenser failures.
Smart Images
Figure CN119124689A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of refrigerators, and in particular to a condenser fault detection method, a detection device, a refrigerator, and a storage medium. Background Art
[0002] When the refrigerator's condenser fails, it will affect the refrigerator's cooling effect. In some cases, the heat of the condenser cannot be dissipated, and the condenser will become abnormally hot. Therefore, it is very necessary to detect the working status of the condenser in order to detect the fault in time.
[0003] In the related art, whether the condenser is faulty is indirectly determined based on the temperature change of the refrigerator compartment. However, it is easy to take too long to make a judgment based on the temperature change, which leads to a poor storage effect of items in the refrigerator. Summary of the invention
[0004] The embodiments of the present application provide a condenser fault detection method, a detection device, a refrigerator, and a storage medium, which can determine whether the condenser has a fault according to the vibration frequency of the condenser.
[0005] In a first aspect, an embodiment of the present application provides a condenser fault detection method, characterized in that it includes: obtaining the vibration frequency of the condenser at preset time intervals within a detection period; and when the vibration frequency changes regularly, determining that the condenser is working normally, or when the vibration frequency changes irregularly, determining that the condenser is at risk of failure.
[0006] In some implementations, the regular change includes: within the detection period, the vibration frequency includes at least one change stage.
[0007] In some implementations, within a change phase, the vibration frequency changes in a change manner, and the change manner includes at least one of the following: linear increase, linear decrease, and maintaining stability.
[0008] In some implementations, the irregular change includes: within the detection period, the vibration frequency includes at least one irregular stage, and the duration of the irregular stage is greater than a first threshold.
[0009] In some implementations, during the irregular phase, the fluctuation degree of the vibration frequency is greater than a second threshold.
[0010] In some implementations, the evaluation index of the fluctuation degree includes at least one of the following: variance, standard deviation, or residual.
[0011] In some implementations, the method further includes: determining that the condenser has failed when it is determined that the condenser has the failure risk within N consecutive detection time periods, wherein N is a preset number of detection times.
[0012] In a second aspect, an embodiment of the present application provides a detection device, characterized in that the device comprises:
[0013] an acquisition module, used to acquire the vibration frequency of the condenser at preset time intervals within a detection period; and
[0014] The determination module is used to determine that the condenser is operating normally when the vibration frequency changes regularly, or to determine that the condenser has a risk of failure when the vibration frequency changes irregularly.
[0015] In a third aspect, an embodiment of the present application provides a refrigerator, characterized in that it includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, it implements the operations in the method described in the first aspect.
[0016] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the operations in the method described in the first aspect are implemented.
[0017] The embodiment of the present application discloses a condenser fault detection method, a detection device, a refrigerator, and a storage medium. The method comprises: obtaining the vibration frequency of the condenser at preset time intervals within a detection period; and determining that the condenser is working normally when the vibration frequency changes regularly, or determining that the condenser has a risk of failure when the vibration frequency changes irregularly. The condenser fault detection method provided in the embodiment of the present application can determine whether the condenser has a fault according to the vibration frequency of the condenser. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of this specification, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 A schematic flow chart of a condenser fault detection method provided by some embodiments of the present application is shown;
[0020] Figure 2An example diagram showing a condenser fault detection method provided by some embodiments of the present application;
[0021] Figure 3 A schematic diagram showing the structure of a detection device provided in some embodiments of the present application; and
[0022] Figure 4 A schematic structural diagram of a refrigerator provided in some embodiments of the present application is shown. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in this application to clearly and completely describe the technical solutions in this application. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.
[0024] Figure 1 A schematic flow chart of a condenser fault detection method provided by some embodiments of the present application is shown. Although a logical sequence is shown in the flow chart, in some cases, the operations shown or described may be performed in an order different from that shown in the accompanying drawings. The specific process of the condenser fault detection method may be as follows:
[0025] S101. During a detection period, obtain the vibration frequency of the condenser at preset time intervals.
[0026] In some embodiments, the vibration frequency of the condenser can be measured by a vibration sensor. In other embodiments, the vibration frequency of the condenser can be determined by data measured by an accelerometer and / or a displacement sensor. The present application does not limit the measurement device used to determine the vibration frequency of the condenser. The measurement device for the vibration frequency of the condenser can be set on the surface of the condenser.
[0027] During the detection period, the vibration frequency at multiple time points can be obtained to obtain a series of discrete data points. These discrete data points can reflect the changing trend of the vibration frequency. In some embodiments, multiple discrete data points can be fitted to obtain a curve of the vibration frequency changing over time.
[0028] S103. When the vibration frequency changes regularly, it is determined that the condenser operates normally.
[0029] The operating status of the condenser can be reflected by the change of the vibration frequency of the condenser. When the condenser is working normally, its vibration frequency shows regular changes. The regular changes can be periodic changes or non-periodic changes.
[0030] In some embodiments, the regular change of the condenser during the detection period may include one or more change stages, wherein in one change stage, the vibration frequency may change in a change mode.
[0031] For example, the change mode can be a linear increase. The vibration frequency of the condenser is affected by many factors, among which the speed of the compressor has a greater impact. When the speed of the compressor increases, the flow and state change speed of the refrigerant will also accelerate, and the frequency of the refrigerant changing from gas to liquid in the condenser will increase, which is reflected in the vibration of the condenser and manifested as an increase in the vibration frequency. As mentioned above, the vibration frequency of the condenser is affected by many factors, and its vibration frequency data may have some deviations above and below a fitted line segment. When the vibration frequency data can be approximately regarded as a line segment with an upward trend within a period of time, or the deviation evaluation index of the vibration data relative to the fitted line segment is within an acceptable range, it can be considered that the change mode is a linear increase. The acceptable range of the deviation evaluation index can be set in advance.
[0032] For example, the change mode may be a linear decrease. As mentioned above, the vibration frequency of the condenser is greatly affected by the speed of the compressor. When the speed of the compressor decreases, the vibration frequency of the condenser will also decrease. The judgment method of linear decrease is similar to that of linear increase, which will not be repeated here.
[0033] For another example, the change mode can be to maintain stability. When the refrigerator is in a stable operation stage, the compressor speed remains stable, and the vibration frequency of the condenser can fluctuate slightly above and below a horizontal line. The specific degree of fluctuation that can be considered as slight fluctuation can be determined by the fluctuation degree evaluation index set in advance.
[0034] In a detection phase, the vibration frequency of the condenser may change in one way or in a combination of multiple ways. For example, the vibration frequency of the condenser may first increase linearly, then maintain stability, and then decrease linearly. The change curve of the vibration frequency is approximately "trapezoidal". For example, the vibration frequency of the condenser may first increase linearly, then maintain stability, and then increase linearly again.
[0035] S105. When the vibration frequency changes irregularly, it is determined that the condenser has a failure risk.
[0036] As mentioned above, the operating status of the condenser can be reflected by the change of the vibration frequency of the condenser. If the condenser fails, its vibration frequency will show irregular changes.
[0037] In some embodiments, the irregular change may be that the vibration frequency includes one or more irregular stages within the detection period. In order to avoid misjudging the accidental noise disturbance as irregular vibration caused by condenser failure, in some embodiments, it is determined whether the duration of the irregular change is greater than the first threshold. If the duration is greater than the first threshold, it can be considered that the change stage is an irregular stage. Among them, the first threshold can be a parameter value set in advance. The first threshold can be a fixed value or a modifiable value. When the detection stage includes at least one irregular stage, it can be considered that the vibration frequency of the condenser presents an irregular change state during the detection stage.
[0038] In some embodiments, it can be determined whether it is a regular change based on the degree of fluctuation of the vibration frequency. In the irregular stage, the degree of fluctuation of the vibration frequency is greater than the second threshold value. The degree of fluctuation of the vibration frequency can be evaluated by a statistical analysis method. For example, the evaluation index of the degree of fluctuation can be the variance, which can be used to evaluate the degree of deviation of the vibration frequency from the mean. For example, the evaluation index of the degree of fluctuation can be the standard deviation, which can be used to evaluate the degree of deviation of the vibration frequency from the mean. For another example, the evaluation index of the degree of fluctuation can also be the residual, which can be used to evaluate the degree of deviation of the vibration frequency from the estimated value. In the irregular stage, the degree of fluctuation of the vibration frequency can also be evaluated using other evaluation indicators, which is not limited in this application.
[0039] If the vibration frequency of the condenser is determined to be irregularly changing during a detection period, it can be considered that the condenser has a risk of failure. After confirming that the condenser has a risk of failure, the condenser can be considered to have failed based on the risk judgment, or further testing can be performed based on the risk judgment to confirm whether a failure has occurred.
[0040] The embodiment of the present application discloses a condenser fault detection method, a detection device, a refrigerator, and a storage medium. The method comprises: obtaining the vibration frequency of the condenser at preset time intervals within a detection period; and determining that the condenser is working normally when the vibration frequency changes regularly, or determining that the condenser has a risk of failure when the vibration frequency changes irregularly. The condenser fault detection method provided in the embodiment of the present application can determine whether the condenser has a fault according to the vibration frequency of the condenser.
[0041] In order to prevent the conclusion that the condenser has a risk of failure from being drawn by chance in a single test, in some embodiments, multiple tests are performed to improve the credibility of the test results. For example, if it is determined that the condenser has a risk of failure in N consecutive test periods, it can be determined that the condenser has failed, where N is the preset number of tests. For example, if it is determined that the condenser has a risk of failure in M test periods out of N test periods, and the ratio of M to N is greater than a preset value, it can be determined that the condenser has failed, where N is the preset number of tests and M is an integer not greater than N.
[0042] Figure 2 An example diagram of a condenser fault detection method provided by some embodiments of the present application is shown. The condenser fault detection process may be as follows:
[0043] During the detection period, the vibration frequency of the condenser is obtained at preset time intervals. Analysis is performed based on the obtained multiple vibration frequency data. The detection period may be 1 hour long.
[0044] Determine whether the vibration frequency changes regularly. If the vibration frequency changes regularly, it is determined that the condenser is working normally. If the vibration frequency changes irregularly, it is determined that the condenser has a risk of failure. Among them, the method for determining whether the change is regular or irregular is as described above and will not be repeated here.
[0045] When it is determined that the condenser has a risk of failure, it is determined whether the risk of failure is determined to exist for N consecutive times. If not, the detection of the next detection period is continued. If satisfied, it is determined that the condenser has a failure. Wherein, N can be 3.
[0046] The condenser fault detection method provided in some embodiments of the present application can determine whether the condenser has a fault risk based on whether the vibration frequency of the condenser changes regularly. After determining that there is a fault risk, it can be further confirmed whether the number of times the fault risk is determined meets the requirements, thereby improving the accuracy of fault detection.
[0047] Figure 3 The schematic diagram of the structure of the detection device provided in some embodiments of the present application is shown. The detection device 300 may specifically include:
[0048] The acquisition module 301 may be used to acquire the vibration frequency of the condenser at preset time intervals within a detection period.
[0049] The determination module 302 may be used to determine that the condenser is operating normally when the vibration frequency changes regularly, or to determine that the condenser has a risk of failure when the vibration frequency changes irregularly.
[0050] The detection device 300 provided in some embodiments of the present application can obtain the vibration frequency of the condenser at preset time intervals within the detection period by the acquisition module 301. Then, the determination module 302 determines that the condenser is working normally when the vibration frequency changes regularly, or determines that the condenser has a risk of failure when the vibration frequency changes irregularly. The detection device 300 provided in some embodiments of the present application can determine whether the condenser has a fault based on the vibration frequency of the condenser.
[0051] In some embodiments, the detection device 300 may further include a second determination module. The second determination module may determine that the condenser has failed if it is determined that the condenser has a failure risk within N consecutive detection periods, where N is a preset number of detection times.
[0052] In addition, the present application also provides a refrigerator, Figure 4 The schematic diagram of the structure of the refrigerator provided by some embodiments of the present application is shown, specifically:
[0053] The refrigerator 400 may include one or more processors 401 of processing cores, one or more computer-readable storage media memories 402 and other components. Those skilled in the art will appreciate that Figure 4 The structure of the refrigerator 400 shown in the figure does not constitute a limitation on the refrigerator 400, and the refrigerator 400 may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.
[0054] The processor 401 is the control center of the refrigerator 400. It uses various interfaces and lines to connect various parts of the entire refrigerator 400. By running or executing software programs and / or modules stored in the memory 402 and calling data stored in the memory 402, it performs various functions of the refrigerator 400 and processes data, thereby monitoring the refrigerator 400 as a whole. Optionally, the processor 401 may include one or more processing cores; preferably, the processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs, etc., and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 401.
[0055] The memory 402 can be used to store software programs and modules. The processor 401 executes various functional applications and data processing by running the software programs and modules stored in the memory 402. The memory 402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function, etc.; the data storage area may store data created according to the use of the refrigerator 400, etc. In addition, the memory 402 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 402 may also include a memory controller to provide the processor 401 with access to the memory 402.
[0056] Specifically in this embodiment, the processor 401 in the refrigerator 400 will load the executable files corresponding to the processes of one or more applications into the memory 402 according to the following instructions, and the processor 401 will run the applications stored in the memory 402, thereby implementing the operations in any refrigerator control method provided in the embodiments of the present application.
[0057] The specific process of refrigerator 400 executing the refrigerator control method can be referred to Figure 1 The description in , this application will not be repeated here.
[0058] Those skilled in the art will appreciate that all or part of the operations in the various methods of the above embodiments may be accomplished through instructions, or through instruction-controlled related hardware. The instructions may be stored in a computer-readable storage medium and loaded and executed by a processor.
[0059] To this end, the present application provides a computer-readable storage medium, on which a computer program is stored. The computer program can be loaded by a processor to execute the operations in any one of the condenser fault detection methods provided in the present application.
[0060] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.
[0061] The computer-readable storage medium may include: a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.
[0062] Since the instructions stored in the computer-readable storage medium can execute the operations in any condenser fault detection method provided in the present application, the beneficial effects that can be achieved by any condenser fault detection method provided in the present application can be achieved. Please refer to the previous embodiments for details and will not be repeated here.
[0063] The above is a detailed introduction to a condenser fault detection control method, detection device, refrigerator and storage medium provided in the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for technical personnel in this field, according to the idea of the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.
Claims
1. A condenser fault detection method, characterized in that: include: During the detection period, obtaining the vibration frequency of the condenser at preset time intervals; as well as In the case where the vibration frequency changes regularly, it is determined that the condenser is working normally, or In the case that the vibration frequency changes irregularly, it is determined that the condenser has a risk of failure.
2. The method according to claim 1, characterized in that in, The regular changes include: During the detection period, the vibration frequency includes at least one variation phase.
3. The method according to claim 2, characterized in that In a change phase, the vibration frequency changes in a change mode, and the change mode includes at least one of the following: Linear increase, linear decrease, and stable.
4. The method according to claim 1, characterized in that in, The irregular changes include: During the detection period, the vibration frequency includes at least one irregular phase, and the duration of the irregular phase is greater than a first threshold.
5. The method according to claim 4, characterized in that During the irregular phase, the fluctuation degree of the vibration frequency is greater than a second threshold.
6. The method according to claim 5, characterized in that The evaluation index of the fluctuation degree includes at least one of the following: Variance, standard deviation, or residual.
7. The method according to claim 1, characterized in that Also includes: When it is determined that the condenser has the failure risk within N consecutive detection time periods, it is determined that the condenser has a failure, wherein N is a preset number of detection times.
8. A detection device, characterized in that: The device comprises: an acquisition module, used to acquire the vibration frequency of the condenser at preset time intervals within a detection period; and The determination module is used to determine that the condenser is operating normally when the vibration frequency changes regularly, or to determine that the condenser has a risk of failure when the vibration frequency changes irregularly.
9. A refrigerator, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the operations in the method according to any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the operations in the method according to any one of claims 1 to 7 are implemented.