Control method for refrigerator, and refrigerator and storage medium

Abstract

Provided in the present application are a control method for a refrigerator, and a refrigerator and a storage medium. The control method comprises: when a variable-frequency compressor of a refrigerator is started, acquiring the operating duration of the variable-frequency compressor; if the operating duration of the variable-frequency compressor reaches a duration threshold value, detecting whether there is an abnormality signal from the variable-frequency compressor; and if there is an abnormality signal from the variable-frequency compressor, controlling the variable-frequency compressor to reset. By means of detecting in real time whether there is an abnormality signal from a variable-frequency compressor so as to monitor the operating state of the variable-frequency compressor, a refrigerator can control, when the operating state of the variable-frequency compressor is abnormal, the variable-frequency compressor to reset so as to make same return to an initial operating state, such that the refrigerator resumes normal refrigeration function.

Description

Refrigerator control methods and refrigerators and storage media Cross-references to related applications

[0001] This application claims priority to Chinese application No. 202410508415.3, filed on April 25, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of refrigerator technology, and in particular to a refrigerator control method, a refrigerator, and a storage medium. Background Technology

[0003] With the intelligent development of the refrigeration industry, refrigerators are becoming increasingly feature-rich. However, in actual use, if the control program for executing these diverse functions malfunctions, the refrigerator's compressor may operate abnormally, causing the refrigerator to stop cooling. This is especially true for refrigerators that rely on inverter compressors.

[0004] However, when the inverter compressor malfunctions and causes the refrigerator to stop cooling, it must be returned to the factory for repair. Existing refrigerators cannot automatically control the operation of the inverter compressor to restore normal cooling function. Summary of the Invention

[0005] This application provides a control method for a refrigerator, as well as a refrigerator and a storage medium.

[0006] According to a first aspect of the embodiments of this specification, a control method for a refrigerator is provided, comprising: when the inverter compressor of the refrigerator is started, acquiring the running time of the inverter compressor; if the running time of the inverter compressor reaches a time threshold, detecting whether there is an abnormal signal in the inverter compressor; if there is an abnormal signal in the inverter compressor, controlling the inverter compressor to reset.

[0007] In one embodiment of this application, the abnormal signal includes a first abnormal signal, and the step of detecting whether the variable frequency compressor has an abnormal signal includes: detecting the temperature of the evaporator of the refrigerator; and determining that the variable frequency compressor has the first abnormal signal when the temperature of the evaporator is higher than a temperature threshold.

[0008] In one embodiment of this application, detecting whether the variable frequency compressor has an abnormal signal further includes: detecting the temperature change value of the evaporator; and determining that the variable frequency compressor has the first abnormal signal when the temperature change value of the evaporator is greater than a change threshold.

[0009] In one embodiment of this application, the refrigerator includes an inverter board and a main control board. The step of controlling the inverter compressor to reset if an abnormal signal exists in the inverter compressor includes: sending a reset signal to the inverter board when the main control board detects the abnormal signal, so as to control the inverter board to reset the inverter compressor.

[0010] In one embodiment of this application, obtaining the runtime of the inverter compressor includes: detecting the open / closed state of the refrigerator door; if the refrigerator door is closed, then obtaining the runtime of the inverter compressor.

[0011] In one embodiment of this application, obtaining the runtime of the variable frequency compressor includes: obtaining the runtime of the variable frequency compressor operating at a speed threshold.

[0012] In one embodiment of this application, the abnormal signal includes a second abnormal signal, and the step of detecting whether the variable frequency compressor has an abnormal signal includes: detecting the operating power of the variable frequency compressor; and determining that the variable frequency compressor has the second abnormal signal when the operating power of the variable frequency compressor is lower than a power threshold.

[0013] In one embodiment of this application, the refrigerator includes an inverter board, and the step of controlling the inverter compressor to reset if an abnormal signal exists in the inverter compressor includes: controlling the inverter compressor to reset when the inverter board detects the abnormal signal.

[0014] According to a second aspect of the embodiments of this specification, a refrigerator is provided, comprising: an inverter compressor; and a control system connected to the inverter compressor for controlling the inverter compressor, the control system including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the refrigerator control method as described above.

[0015] According to a third aspect of the embodiments of this specification, a storage medium is provided that stores program instructions, which, when executed, perform the refrigerator control method described above.

[0016] The technical solutions provided by the embodiments of this specification may include the following beneficial effects.

[0017] When the refrigerator's inverter compressor is running, the system monitors its operating time. If the compressor's operating time reaches a threshold, it checks for any abnormal signals. If an abnormal signal is detected, the compressor is reset. By monitoring the inverter compressor's operating status in real time, the refrigerator can return it to its initial operating state when an abnormality occurs. This restores the refrigerator's normal cooling function and improves the user experience.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] Figure 1 is a structural diagram of an embodiment of the refrigerator of this application.

[0021] Figure 2 is a flowchart of an embodiment of the refrigerator control method of this application.

[0022] Figure 3 is a flowchart of an embodiment of the refrigerator control method of this application.

[0023] Figure 4 is a flowchart of an embodiment of the refrigerator control method of this application.

[0024] Figure 5 is a structural diagram of an embodiment of the control system of the refrigerator of this application. Detailed Implementation

[0025] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0026] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates at least two. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper," etc., are for ease of description only and are not limited to a location or spatial orientation. The terms "comprising" or "including," etc., mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms "connected," "linked," etc., are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect.

[0027] The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0028] Refrigerators are becoming increasingly versatile, but in real-world use, if the control program for these functions malfunctions, the compressor may operate abnormally, causing the refrigerator to stop cooling. This is especially true for refrigerators that rely on inverter compressors. Currently, when this happens, the only solution is to send the refrigerator back to the factory for repair. If, during the repair process, the refrigerator is found to be cooling normally, it's a "false failure"—meaning the problem lies in the control program, not internal component damage.

[0029] To address the problem of refrigerators failing to cool due to abnormal operation of the aforementioned inverter compressor, this application provides a refrigerator, as shown in Figure 1. The refrigerator includes an inverter compressor 1, a control system 2, and an evaporator 3. The control system 2 includes a main control board 21 and an inverter board 22. The inverter board 22 is connected to the inverter compressor 1 and is used to directly control the inverter compressor 1. The main control board 21 is connected to both the evaporator 3 and the inverter board 22, and is used to indirectly control the inverter compressor 1 based on the temperature of the evaporator 3. Here, indirect control refers to controlling the inverter compressor 1 through the control of the inverter board 22. The above connection methods include, but are not limited to, electrical connections.

[0030] As shown in Figure 2, this application provides a refrigerator control method, including steps 201 to 203.

[0031] In step 201, when the refrigerator's inverter compressor is started, the running time of the inverter compressor is obtained.

[0032] In step 202, if the running time of the variable frequency compressor reaches the duration threshold, an abnormal signal is detected in the variable frequency compressor.

[0033] The duration threshold is the operating time of the variable frequency compressor when it reaches a stable state. It can be set based on experience, and different duration thresholds can be set for different variable frequency compressors.

[0034] In step 203, if there is an abnormal signal in the variable frequency compressor, the variable frequency compressor is controlled to reset.

[0035] An abnormal signal indicates an abnormal operating status of the variable frequency compressor.

[0036] When the refrigerator's inverter compressor is running, the system acquires its operating time. If the compressor reaches a set time threshold (i.e., when it reaches a stable state), the system checks for any abnormal signals. If an abnormal signal is detected, the compressor is reset. By monitoring the inverter compressor's operating status in real time, the refrigerator can return it to its initial operating state when an abnormality occurs. This restores the refrigerator's normal cooling function and improves the user experience.

[0037] In one embodiment of this application, the abnormal signal includes a first abnormal signal.

[0038] Referring to Figure 3, the following explains how to detect the first abnormal signal of the variable frequency compressor and then control its reset.

[0039] In step 301, when the refrigerator's inverter compressor is started, the open / closed status of the refrigerator door is detected.

[0040] In step 302, if the refrigerator door is closed, the runtime of the inverter compressor is obtained.

[0041] Understandably, if the inverter compressor is checked by measuring the evaporator temperature when the refrigerator door is open, the evaporator temperature will be affected by the outflow of cooling capacity caused by the open door, leading to errors in the test results.

[0042] Testing the inverter compressor with the refrigerator door closed can improve the accuracy and reliability of the test results.

[0043] In step 303, if the running time of the variable frequency compressor reaches the duration threshold, the presence of a first abnormal signal in the variable frequency compressor is detected.

[0044] For example, if the time threshold is 30 minutes, and the inverter compressor is detected to have run for 50 minutes, then the time threshold has been reached. This indicates that the inverter compressor has reached a stable state. At this point, detecting the presence of the first abnormal signal in the inverter compressor is to check for any abnormalities in the inverter compressor under stable conditions. Understandably, when the inverter compressor is running in an unstable state, the various parameters of the refrigerator (including the evaporator temperature described below) are unstable. Detecting the inverter compressor under unstable conditions would introduce errors in the detection results.

[0045] Detecting the presence of a first abnormal signal in a variable frequency compressor when its operating time reaches a certain threshold can improve the accuracy and reliability of the detection results.

[0046] In one embodiment of this application, detecting whether a first abnormal signal exists in the inverter compressor includes: detecting the temperature of the refrigerator's evaporator, and determining that a first abnormal signal exists in the inverter compressor if the evaporator temperature is higher than a temperature threshold. The temperature threshold is the temperature reached by the evaporator under normal operating conditions of the inverter compressor.

[0047] For example, if the temperature threshold is -20 degrees Celsius, and the detected evaporator temperature is -10 degrees Celsius, which is higher than the temperature threshold of -20 degrees Celsius, meaning the evaporator temperature is higher than the temperature reached by the evaporator under normal operating conditions of the inverter compressor, it indicates that the evaporator's cooling effect has deteriorated. Therefore, there is a possibility that the deterioration in the evaporator's cooling effect is due to an abnormal operating state of the inverter compressor. In this case, it is determined that the inverter compressor has a first abnormal signal.

[0048] In one embodiment of this application, detecting whether a first abnormal signal exists in the variable frequency compressor includes: detecting the temperature change value of the evaporator, and determining that a first abnormal signal exists in the variable frequency compressor if the temperature change value of the evaporator is greater than a change threshold. The temperature change value is the difference between the current temperature of the evaporator and the temperature at which the evaporator was first started, when the running time of the variable frequency compressor is at least greater than a time threshold. The change threshold is the difference between the temperature of the evaporator when it reaches the time threshold and the temperature at which the evaporator was first started, under normal operating conditions of the variable frequency compressor. It is understood that since the evaporator cools under normal operating conditions of the variable frequency compressor, the temperature of the evaporator during operation will be lower than the temperature at which it was first started, so the change threshold is less than 0 degrees Celsius.

[0049] For example, if the temperature change threshold is -5 degrees Celsius, and the detected evaporator temperature is 0 degrees Celsius when it starts up, and -3 degrees Celsius when it reaches the time threshold, then the evaporator temperature change is -3 degrees Celsius, which is greater than -5 degrees Celsius. This indicates that the evaporator's cooling effect is worse than that of the inverter compressor under normal operating conditions. Therefore, there is a possibility that the refrigerator's cooling effect is worse due to an abnormal operating state of the inverter compressor, and in this case, a first abnormal signal is determined to exist in the inverter compressor.

[0050] By testing the evaporator's cooling effect through multiple methods, it is possible to determine whether there is a malfunction in the inverter compressor, thus improving the comprehensiveness of the testing.

[0051] In step 304, if the variable frequency compressor has a first abnormal signal, the variable frequency compressor is controlled to reset.

[0052] In one embodiment of this application, when the main control board detects a first abnormal signal, it sends a reset signal to the frequency converter board to control the frequency converter board to reset the frequency converter compressor.

[0053] The main control board is electrically connected to the evaporator. When the main control board detects a decrease in the cooling effect of the evaporator, it determines that there is a first abnormal signal in the inverter compressor. Then, the main control board sends a reset signal to the inverter board. After receiving the reset signal, the inverter board controls the inverter compressor to reset.

[0054] The main control board detects the cooling effect of the evaporator, thereby determining whether there is any abnormality in the inverter compressor. It then controls the inverter compressor that may be malfunctioning to reset it to its initial operating state, thus restoring the refrigerator to normal cooling function and improving the user experience.

[0055] In one embodiment of this application, the abnormal signal includes a second abnormal signal.

[0056] Referring to Figure 4, the following explains how to detect the second abnormal signal of the variable frequency compressor and then control its reset.

[0057] In step 401, when the refrigerator's inverter compressor is started, the runtime of the inverter compressor running at the speed threshold is obtained.

[0058] The speed threshold is the speed at which the variable frequency compressor operates under stable conditions.

[0059] In step 402, if the operating time of the variable frequency compressor at the speed threshold reaches the duration threshold, then the presence of a second abnormal signal in the variable frequency compressor is detected.

[0060] For example, if the speed threshold is 2400 revolutions per minute and the duration threshold is 3 minutes, when the inverter compressor is detected running at 2400 revolutions per minute for 3 minutes, it indicates that the inverter compressor has reached a stable state. At this point, detecting whether the inverter compressor has a second abnormal signal is to detect whether the inverter compressor in the stable state has any abnormalities. Understandably, when the inverter compressor is running in an unstable state, the various parameters of the refrigerator (including the operating power of the inverter compressor mentioned below) are unstable. Detecting the inverter compressor in an unstable state will cause errors in the detection results.

[0061] By detecting the speed and running time of the variable frequency compressor, it is possible to determine whether the variable frequency compressor has reached a stable operating state, which can further improve the accuracy and reliability of the detection results.

[0062] In one embodiment of this application, detecting whether a second abnormal signal exists in a variable frequency compressor includes: detecting the operating power of the variable frequency compressor, and determining that a second abnormal signal exists in the variable frequency compressor if the operating power of the variable frequency compressor is lower than a power threshold. The power threshold is the power of the variable frequency compressor under normal operating conditions.

[0063] For example, if the power threshold is 6 watts, and the detected operating power of the variable frequency compressor is 4 watts, which is lower than the power threshold of 6 watts, that is, the operating power of the variable frequency compressor is lower than its power under normal operating conditions, it indicates that the operating state of the variable frequency compressor is abnormal. In this case, it is determined that there is a second abnormal signal in the variable frequency compressor.

[0064] By detecting the operating power of the variable frequency compressor, it is possible to more directly determine whether there is any abnormality in the variable frequency compressor, thereby improving the accuracy and reliability of the detection results.

[0065] In step 403, if a second abnormal signal exists in the variable frequency compressor, the variable frequency compressor is controlled to reset.

[0066] In one embodiment of this application, the inverter compressor is reset when the inverter board detects a second abnormal signal.

[0067] The frequency converter board is electrically connected to the frequency converter compressor. When the frequency converter board detects a second abnormal signal in the frequency converter compressor through the operating power of the frequency converter compressor, it controls the frequency converter compressor to reset.

[0068] The inverter board detects the operating power of the inverter compressor, thereby determining whether there is any abnormality in the inverter compressor. It then controls the inverter compressor with abnormality to reset and return it to its initial operating state, thus restoring the refrigerator's normal cooling function and improving the user experience.

[0069] As shown in Figure 5, the control system in this application also includes a processor 501, an internal bus 502, a network interface 503, a memory 504, and a non-volatile memory 505, and may also include other hardware required for business operations. The processor 501 reads the corresponding computer program from the non-volatile memory 505 into the memory 504 and then runs it to implement the electric vehicle control method described above. Of course, in addition to the software implementation, this specification does not exclude other implementation methods, such as logic devices or a combination of hardware and software, etc. That is to say, the execution subject of the following processing flow is not limited to each logic unit, but can also be hardware or logic devices.

[0070] This application also provides a storage medium storing program instructions, which, when executed, perform the refrigerator control method described above.

[0071] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of this application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0072] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more blocks of the flowchart illustrations and / or one or more blocks of the block diagrams.

[0073] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

[0075] Any reference to prior art in the specification is not and should not be construed as an admission or in any way an implication that such prior art constitutes part of the general common knowledge in the application region or any other jurisdiction, or that such prior art could be reasonably understood and regarded as relevant by a person skilled in the art.

Claims

1. A method for controlling a refrigerator, characterized in that, include: When the inverter compressor of the refrigerator is started, the running time of the inverter compressor is obtained; If the running time of the variable frequency compressor reaches the duration threshold, then detect whether there is an abnormal signal in the variable frequency compressor; If the variable frequency compressor has an abnormal signal, the variable frequency compressor is controlled to reset.

2. The control method according to claim 1, characterized in that, The abnormal signal includes a first abnormal signal, and the detection of whether the variable frequency compressor has an abnormal signal includes: Detect the temperature of the refrigerator's evaporator; If the temperature of the evaporator is higher than the temperature threshold, it is determined that the variable frequency compressor has the first abnormal signal.

3. The control method according to claim 2, characterized in that, The detection of whether the variable frequency compressor has an abnormal signal also includes: The temperature change value of the evaporator is detected; If the temperature change of the evaporator is greater than the change threshold, it is determined that the variable frequency compressor has the first abnormal signal.

4. The control method according to claim 1, characterized in that, The refrigerator includes an inverter board and a main control board. If an abnormal signal is detected in the inverter compressor, the inverter compressor is controlled to reset, including: If the main control board detects the abnormal signal, it sends a reset signal to the inverter board to control the inverter board to reset the inverter compressor.

5. The control method according to any one of claims 1 to 4, characterized in that, The step of obtaining the operating time of the variable frequency compressor includes: Detect the open / closed state of the refrigerator door; If the refrigerator door is closed, the runtime of the inverter compressor is obtained.

6. The control method according to claim 1, characterized in that, The step of obtaining the operating time of the variable frequency compressor includes: Obtain the runtime of the variable frequency compressor when it operates at a speed threshold.

7. The control method according to claim 1, characterized in that, The abnormal signal includes a second abnormal signal, and the detection of whether the variable frequency compressor has an abnormal signal includes: Detect the operating power of the variable frequency compressor; If the operating power of the variable frequency compressor is lower than the power threshold, it is determined that the variable frequency compressor has the second abnormal signal.

8. The control method according to claim 1, characterized in that, The refrigerator includes an inverter board, and the step of controlling the inverter compressor to reset if an abnormal signal is detected in the inverter compressor includes: If the inverter board detects the abnormal signal, it controls the inverter compressor to reset.

9. A refrigerator, characterized in that, include: Variable frequency compressor; A control system, connected to the variable frequency compressor, is used to control the variable frequency compressor. The control system includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the refrigerator control method as described in any one of claims 1 to 8.

10. A storage medium storing program instructions, characterized in that, When the program instructions are executed, they perform the refrigerator control method as described in any one of claims 1 to 8.

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