Air conditioner, fault detection method and device thereof and computer readable storage medium

Abstract

The embodiment of the invention provides an air conditioner, a fault detection method and device of the air conditioner and a computer readable storage medium. The fault detection method of the air conditioner comprises the steps that whether the amplitude of a compressor in the preset direction exceeds an amplitude threshold value or not is determined; in response to the fact that the amplitude of the compressor in the preset direction exceeds an amplitude threshold value, whether the phase current of the compressor meets a preset change condition or not and whether the maximum fluctuation amplitude of the temperature of the exhaust pipe within the first preset duration is smaller than a fluctuation amplitude threshold value or not are determined; in response to the fact that the phase current of the compressor meets the preset change condition and the maximum fluctuation amplitude of the temperature of the exhaust pipe within the first preset duration is smaller than a fluctuation amplitude threshold value, it is determined that the exhaust pipe is broken; and in response to the fact that the phase current of the compressor does not meet the preset change condition or the maximum fluctuation amplitude of the temperature of the exhaust pipe within the first preset duration is larger than or equal to the fluctuation amplitude threshold value, it is determined that the compressor breaks down.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to an air conditioner and a fault detection method, device, and computer-readable storage medium thereof. Background Art

[0002] In the related art, when a compressor fails, the type of failure that occurs in the compressor cannot be accurately determined, which results in maintenance personnel being unable to accurately handle the compressor failure, thereby increasing the maintenance operation burden on the maintenance personnel. Summary of the invention

[0003] The embodiments of the present application provide an air conditioner and a fault detection method, device, and computer-readable storage medium thereof, which can accurately determine the fault type of the compressor, and then guide maintenance personnel to accurately handle the compressor fault, thereby reducing the maintenance operation burden and improving the convenience of maintenance operations.

[0004] In a first aspect, an embodiment of the present application provides an air conditioner fault detection method, wherein the air conditioner includes a compressor, an exhaust pipe and an exhaust temperature sensor, wherein the exhaust pipe is connected to the exhaust port of the compressor, and the air conditioner fault detection method includes: determining whether the amplitude of the compressor exceeds an amplitude threshold; in response to determining that the amplitude of the compressor exceeds the amplitude threshold, determining whether the phase current of the compressor satisfies a preset change condition and whether the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is less than the fluctuation amplitude threshold; in response to determining that the phase current of the compressor satisfies the preset change condition and the maximum fluctuation amplitude of the temperature of the exhaust pipe within the first preset time period is less than the fluctuation amplitude threshold, determining that the exhaust pipe is ruptured; in response to determining that the phase current of the compressor does not satisfy the preset change condition or the maximum fluctuation amplitude of the temperature of the exhaust pipe within the first preset time period is greater than or equal to the fluctuation amplitude threshold, determining that the compressor is faulty.

[0005] In some embodiments, determining whether the phase current of the compressor satisfies a preset change condition includes: determining whether the phase current of the compressor is less than a current threshold within a second preset time period; in response to determining that the phase current of the compressor is less than the current threshold within the second preset time period, determining that the phase current of the compressor satisfies the preset change condition.

[0006] In some embodiments, determining whether the phase current of the compressor satisfies a preset change condition includes: in response to determining that the phase current of the compressor is greater than or equal to a current threshold at at least one moment within a second preset time length, determining whether the change trend of the phase current of the compressor within the second preset time length is gradually decreasing; in response to determining that the change trend of the phase current of the compressor within the second preset time length is gradually decreasing, determining that the phase current of the compressor satisfies the preset change condition; in response to determining that the change trend of the phase current of the compressor within the second preset time length is not gradually decreasing, determining that the phase current of the compressor does not satisfy the preset change condition.

[0007] In some embodiments, the compressor is provided with a plurality of preset directions; determining whether the amplitude of the compressor exceeds an amplitude threshold comprises: determining whether the amplitudes of the compressor along the plurality of preset directions all exceed the amplitude threshold, and whether the durations during which the amplitudes of the compressor along the plurality of preset directions exceed the amplitude threshold all exceed a time threshold; in response to determining that the amplitudes of the compressor along the plurality of preset directions all exceed the amplitude threshold, and the durations during which the amplitudes of the compressor along the plurality of preset directions exceed the amplitude threshold all exceed a time threshold, determining that the amplitude of the compressor exceeds the amplitude threshold.

[0008] In some embodiments, the air conditioner includes a gyroscope, which is configured to measure the offset angle of a preset axis on the compressor, wherein the preset axis extends along a preset direction; before determining whether the amplitude of the compressor exceeds an amplitude threshold, the air conditioner fault detection method includes: obtaining the angle of the preset axis at a current moment and the angle at a previous moment; in response to determining that the angle of the preset axis at a current moment and the angle of the preset axis at a previous moment are both located in a first angle partition or both located in a second angle partition, taking the difference between the angle of the preset axis at a current moment and the angle of the preset axis at a previous moment as the offset angle of the preset axis; in response to determining that the angle of the preset axis at a current moment is located in the first angle partition and the angle of the preset axis at a previous moment is located in the second angle partition, determining the offset angle of the preset axis according to the following formula: Δε=(180°+α i )+(180°-α i-1 ); in response to determining that the angle of the preset axis at the current moment is within the second angle partition and the angle of the preset axis at the previous moment is within the first angle partition, the offset angle of the preset axis is determined according to the following formula: Δε=(180°+α i-1 )+(180°-α i ), wherein Δε is the offset angle of the preset axis, α i-1 is the angle of the preset axis at the previous moment, α iis the angle of the preset axis at the current moment, i is a positive integer and is greater than or equal to 2; the first angle partition is 0° to 180°, and the second angle partition is -180° to 0°.

[0009] In a second aspect, an embodiment of the present application provides an air conditioner fault detection device, comprising: an amplitude comparison circuit, configured to determine whether the amplitude of the compressor exceeds an amplitude threshold; a fault determination circuit, configured to perform the following fault determination operations: in response to determining that the amplitude of the compressor exceeds the amplitude threshold, determining whether the phase current of the compressor is gradually decreasing and whether the measured values ​​of the exhaust temperature sensor within a preset time are all lower than the temperature threshold; in response to determining that the phase current of the compressor is gradually decreasing and the measured values ​​of the exhaust temperature sensor within a preset time are all lower than the temperature threshold, determining that the exhaust pipe is damaged or loose; in response to determining that the phase current of the compressor is not gradually decreasing or the measured values ​​of the exhaust temperature sensor within a preset time are not lower than the temperature threshold, determining that the compressor is faulty.

[0010] In a third aspect, an embodiment of the present application provides an air conditioner, comprising: a compressor, an exhaust pipe and an exhaust temperature sensor, wherein the exhaust pipe is connected to the exhaust port of the compressor, and the exhaust temperature sensor is arranged on the exhaust pipe; a memory storing a computer program; and a processor, wherein when the computer program is executed by the processor, the air conditioner fault detection method as described in any of the above embodiments is implemented.

[0011] In some embodiments, the air conditioner includes a six-axis sensor including a three-axis gyroscope and a three-axis accelerometer.

[0012] In some embodiments, a snap-fit ​​portion is provided at the bottom of the compressor, and the six-axis sensor is snap-fitted to the snap-fit ​​portion.

[0013] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program is loaded by a processor to execute the steps in the above-mentioned air conditioner fault detection method.

[0014] The air conditioner fault detection method provided in the embodiment of the present application first determines whether the amplitude of the compressor along a preset direction exceeds the amplitude threshold. When the amplitude of the compressor along the preset direction exceeds the amplitude threshold, it further determines whether the phase current of the compressor satisfies the preset change condition and whether the maximum fluctuation amplitude of the exhaust pipe temperature within the first preset time period is less than the fluctuation amplitude threshold, thereby accurately identifying the actual cause of the abnormal vibration of the compressor, such as determining the cause of the fault as a specific type such as a rupture of the exhaust pipe or a failure of the compressor, so as to guide maintenance personnel to accurately handle the compressor fault, reduce the burden of maintenance operations and improve the convenience of maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 is a flow chart of an air conditioner fault detection method provided by some embodiments of the present application;

[0017] Figure 2 is a partial flow chart of an air conditioner fault detection method provided by some embodiments of the present application;

[0018] Figure 3 is another partial flow chart of the air conditioner fault detection method provided by some embodiments of the present application;

[0019] Figure 4 is another partial flow chart of the air conditioner fault detection method provided by some embodiments of the present application;

[0020] Figure 5 This is a structural diagram of an air conditioner provided in some embodiments of the present application.

[0021] Description of main component symbols:

[0022] 1- air conditioner, 10- processor, 20- memory. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not 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 this application.

[0024] 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.

[0025] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0026] 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.

[0027] 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.

[0028] like Figure 1 As shown, in the first aspect, an embodiment of the present application provides an air conditioner fault detection method, which includes S10~S40, can accurately determine the fault type of the compressor, and then guide the maintenance personnel to accurately handle the compressor fault, reduce the maintenance operation burden and improve the convenience of maintenance operation.

[0029] The air conditioner 1 includes a compressor and an exhaust pipe, and the exhaust pipe is connected to the exhaust port of the compressor. The type of the air conditioner 1 can be determined according to actual needs, and can be, for example, a wall-mounted air conditioner 1, a cabinet air conditioner 1, a window air conditioner 1, etc., which is not limited in the embodiments of the present application. In some embodiments, the air conditioner 1 can include an exhaust temperature sensor, which is arranged on the exhaust pipe and is used to detect the temperature of the exhaust pipe.

[0030] S10: Determine whether the amplitude of the compressor exceeds an amplitude threshold.

[0031] Here, the amplitude of the compressor can be determined by measuring with a sensor provided on the compressor. In some examples, determining whether the amplitude of the compressor exceeds the amplitude threshold value may be determining whether the amplitude of the compressor along a preset direction exceeds the amplitude threshold value. The preset direction may be predetermined according to the actual operating conditions of the compressor, and may be a vibration direction that can accurately reflect the abnormal vibration state of the compressor. The number of preset directions may be determined according to actual needs, and may be one or more, which is not limited in the embodiments of the present application. The amplitude threshold value may be predetermined according to the historical operating data and / or experimental test data of the compressor when abnormal vibration occurs, and may be pre-stored in the control system of the air conditioner 1; when the compressor is provided with a plurality of preset directions, a corresponding amplitude threshold value may be set for each preset direction.

[0032] In some embodiments, the compressor may be mounted on the bottom plate of the air conditioner 1, and the preset direction may include at least the up-down direction. Exemplarily, the preset direction may be the up-down direction, and in this case, it may be directly determined whether the vibration amplitude of the compressor in the up-down direction exceeds the amplitude threshold; in another exemplary embodiment, the preset direction may include the up-down direction and the horizontal direction, and the horizontal direction may include at least one of the left-right direction and the front-back direction, and in this case, it may be determined whether the vibration amplitude of the compressor in the up-down direction and the horizontal direction exceeds the corresponding amplitude thresholds.

[0033] S20: In response to determining that the amplitude of the compressor exceeds the amplitude threshold, determine whether the phase current of the compressor meets a preset change condition and whether the maximum fluctuation amplitude of the exhaust pipe temperature within a first preset time period is less than the fluctuation amplitude threshold.

[0034] When it is determined that the amplitude of the compressor exceeds the amplitude threshold, for example, when it is determined that the amplitude of the compressor along a preset direction exceeds the amplitude threshold, it can be determined that the compressor has abnormally vibrated and there may be a fault problem. At this time, it can be further determined whether the phase current of the compressor meets the preset change condition and whether the maximum fluctuation amplitude of the temperature of the exhaust pipe within the first preset time is less than the fluctuation amplitude threshold, so as to accurately determine the actual cause of the abnormal vibration of the compressor, and then accurately determine the fault type of the compressor.

[0035] S30: In response to determining that the phase current of the compressor satisfies a preset change condition and the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is less than a fluctuation amplitude threshold, determining that the exhaust pipe is ruptured.

[0036] Here, the change of the phase current of the compressor when the exhaust pipe is ruptured can be predetermined based on historical operation data and / or experimental test data, and the change can be used as the preset change condition.

[0037] Similarly, the upper limit of the temperature fluctuation amplitude of the exhaust pipe where the rupture occurs can be predetermined based on historical operation data and / or experimental test data, thereby obtaining a threshold value of the temperature fluctuation amplitude of the exhaust pipe. The maximum fluctuation amplitude of the temperature of the exhaust pipe within the first preset time period can be the difference between the highest temperature and the lowest temperature of the exhaust pipe within the first preset time period. The specific value of the first preset time period can be determined according to actual needs, and the embodiment of the present application does not limit this; for example, the first preset time period can be 4 to 7 minutes, for example, it can be different values ​​such as 4 minutes, 5 minutes, 6 minutes or 7 minutes.

[0038] When it is determined that the phase current of the compressor meets the preset change condition and the maximum fluctuation amplitude of the temperature of the exhaust pipe within the first preset time period is less than the fluctuation amplitude threshold, it can be determined that the exhaust pipe is broken. The exhaust pipe may be broken, which may include the exhaust pipe being broken into at least two pieces, the existence of a large crack on the exhaust pipe, and the crack causing the exhaust pipe to shake significantly, etc., which is not limited in the embodiments of the present application. At this time, maintenance personnel are required to replace the exhaust pipe to avoid the exhaust pipe being broken and continuing to cause abnormal vibration of the compressor.

[0039] S40: In response to determining that the phase current of the compressor does not satisfy a preset change condition or that the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is greater than or equal to a fluctuation amplitude threshold, determining that the compressor fails.

[0040] When it is determined that the phase current of the compressor does not meet the preset change condition or the maximum fluctuation amplitude of the temperature of the exhaust pipe within the first preset time period is greater than or equal to the fluctuation amplitude threshold, it can be determined that the exhaust pipe is not broken, but the compressor is faulty. Here, the failure of the compressor may include failure of the compressor body due to aging, loosening and falling of bolts used to fix the compressor, and other types of failures, which are not limited in the embodiments of the present application. At this time, maintenance personnel are required to perform troubleshooting operations such as maintenance of the compressor body or tightening the bolts used to fix the compressor to avoid compressor failure and continue to cause abnormal vibration of the compressor.

[0041] Compared with the related art, the air conditioner fault detection method provided in the embodiment of the present application first determines whether the amplitude of the compressor along a preset direction exceeds the amplitude threshold. When the amplitude of the compressor along the preset direction exceeds the amplitude threshold, it further determines whether the phase current of the compressor satisfies the preset change condition and whether the maximum fluctuation amplitude of the exhaust pipe temperature within the first preset time period is less than the fluctuation amplitude threshold, thereby accurately identifying the actual cause of the abnormal vibration of the compressor, such as determining the cause of the fault as a specific type such as a rupture of the exhaust pipe or a failure of the compressor, so as to guide maintenance personnel to accurately handle the compressor fault, reduce the burden of maintenance operations and improve the convenience of maintenance operations.

[0042] The type of preset change condition can be determined according to the actual working conditions, and the embodiments of the present application do not limit this. Figure 2 As shown, in some embodiments, "determining whether the phase current of the compressor meets the preset change condition" in S20 may include S201-S202.

[0043] S201: Determine whether the phase current of the compressor is less than the current threshold value within a second preset time period.

[0044] Here, the current threshold value may be pre-set in the control system of the air conditioner 1 to serve as a judgment condition for whether the phase current of the compressor satisfies a preset change condition.

[0045] S202: In response to determining that the phase current of the compressor is less than the current threshold value within a second preset time period, determining that the phase current of the compressor satisfies a preset change condition.

[0046] The specific value of the second preset time length can be determined according to actual needs, and the embodiment of the present application does not limit this. The first preset time length and the second preset time length may be equal or unequal, and the embodiment of the present application does not limit this. Exemplarily, the second preset time length may be 4 to 7 minutes, for example, it may be different values ​​such as 4 minutes, 5 minutes, 6 minutes or 7 minutes. After determining that the phase current of the compressor is less than the current threshold within the second preset time length, it can be determined that the phase current of the compressor meets the preset change condition, and the abnormal vibration of the compressor may be caused by a rupture in the exhaust pipe.

[0047] By setting S201 to S202, it is possible to more accurately determine whether the phase current of the compressor meets the preset change condition, and then use it as one of the identification conditions to accurately identify the specific fault cause that causes the abnormal vibration of the compressor.

[0048] like Figure 3 As shown, in some examples, “determining whether the phase current of the compressor satisfies a preset change condition” in S20 may include S203 to S205 .

[0049] S203: In response to determining that the phase current of the compressor is greater than or equal to the current threshold at at least one moment within the second preset time period, determine whether the change trend of the phase current of the compressor within the second preset time period is gradually decreasing.

[0050] When it is determined that the phase current of the compressor is greater than or equal to the current threshold at at least one moment within the second preset time period, that is, the phase current of the compressor is not completely less than the current threshold within the second preset time period, it can be further determined whether the change trend of the phase current of the compressor within the second preset time period is gradually decreasing, so as to further determine whether the phase current of the compressor meets the preset change condition.

[0051] Exemplarily, the change trend of the compressor phase current within the second preset time length is gradually decreasing, which may refer to that the compressor phase current continuously decreases within the second preset time length, that is, in any two adjacent moments within the second preset time length, the compressor phase current at the previous moment is greater than the phase current at the next moment. Another exemplary example, the change trend of the compressor phase current within the second preset time length is gradually decreasing, which may refer to that the compressor phase current continuously decreases in part of the time period of the second preset time and remains unchanged in the remaining time period; in other words, the change curve of the compressor phase current within the second preset time length includes multiple descending segments and at least one platform segment, the platform segment is located between two adjacent descending segments, and the compressor phase current continuously decreases in the descending segment and remains unchanged in the platform segment.

[0052] S204: In response to determining that the change trend of the phase current of the compressor within the second preset time period is gradually decreasing, determining that the phase current of the compressor meets a preset change condition.

[0053] When it is determined that the phase current of the compressor is greater than or equal to the current threshold at at least one moment within the second preset time period, and the changing trend of the phase current of the compressor within the second preset time period is gradually decreasing, it can be determined that the phase current of the compressor meets the preset change condition, and the abnormal vibration of the compressor may be caused by a rupture in the exhaust pipe.

[0054] S205: In response to determining that the change trend of the phase current of the compressor within the second preset time period is not gradually decreasing, determining that the phase current of the compressor does not meet the preset change condition.

[0055] Here, the change trend of the phase current of the compressor within the second preset time length is not gradually decreasing, which may mean that the phase current of the compressor continuously rises in at least a part of the time period within the second preset time length, or may also mean that the phase current of the compressor remains unchanged within the second preset time length. When it is determined that the phase current of the compressor is greater than or equal to the current threshold at at least one moment within the second preset time length, but the change trend of the phase current of the compressor within the second preset time length is not gradually decreasing, it can be determined that the phase current of the compressor does not meet the preset change condition, and the abnormal vibration of the compressor is not caused by the rupture of the exhaust pipe.

[0056] By setting S203 to S205, it is possible to more accurately determine whether the phase current of the compressor meets the preset change condition, and then use it as one of the identification conditions to accurately identify the specific fault cause that causes the abnormal vibration of the compressor.

[0057] In some embodiments, the compressor may be provided with a plurality of preset directions as described above. Figure 4 As shown, S10 may include S11-S12.

[0058] S11: Determine whether the vibration amplitudes of the compressor along multiple preset directions all exceed the amplitude threshold, and whether the durations of the vibration amplitudes of the compressor along multiple preset directions exceeding the amplitude threshold all exceed the time threshold.

[0059] S12: In response to determining that the amplitudes of the compressor along multiple preset directions all exceed the amplitude threshold, and the durations of the amplitudes of the compressor along multiple preset directions exceeding the amplitude threshold all exceed the time threshold, determine that the amplitude of the compressor exceeds the amplitude threshold.

[0060] Exemplarily, the multiple preset directions may include an up-down direction and a horizontal direction, and the horizontal direction may include at least one of a left-right direction and a front-back direction. Here, it may be determined whether the amplitude of the compressor in the up-down direction and the horizontal direction exceeds the amplitude threshold, and whether the duration of the amplitude of the compressor in the up-down direction and the horizontal direction exceeding the amplitude threshold exceeds the time threshold, so as to determine whether the amplitude of the compressor exceeds the amplitude threshold. After determining that the amplitude of the compressor in multiple preset directions exceeds the amplitude threshold, and the duration of the amplitude of the compressor in multiple preset directions exceeding the amplitude threshold exceeds the time threshold, it may be determined that the amplitude of the compressor exceeds the amplitude threshold.

[0061] In some embodiments, the air conditioner 1 may include a gyroscope. The gyroscope is configured to measure the offset angle of a preset axis on the compressor, and the preset axis extends along the preset direction. The type of gyroscope can be determined according to actual needs, and the embodiment of the present application does not limit this; illustratively, the gyroscope can be a three-axis gyroscope. Before S10, the air conditioner fault detection method may include S01 to S05.

[0062] S01: Get the angle of the preset axis at the current moment and the angle at the previous moment.

[0063] S02: In response to determining that the angle of the preset axis at the current moment and the angle at the previous moment are both within the first angle partition or both within the second angle partition, the difference between the angle of the preset axis at the current moment and the angle at the previous moment is used as the offset angle of the preset axis.

[0064] S03: In response to determining that the angle of the preset axis at the current moment is within the first angle partition and the angle of the preset axis at the previous moment is within the second angle partition, determine the offset angle of the preset axis according to the following formula:

[0065] Δε=(180°+α i )+(180°-α i-1 )

[0066] S04: In response to determining that the angle of the preset axis at the current moment is within the second angle partition and the angle of the preset axis at the previous moment is within the first angle partition, determine the offset angle of the preset axis according to the following formula:

[0067] Δε=(180°+α i-1 )+(180°-α i )

[0068] Among them, Δε is the offset angle of the preset axis, α i-1 is the angle of the preset axis at the previous moment, α i is the angle of the preset axis at the current moment, i is a positive integer greater than or equal to 2; the first angle partition is 0° to 180°, and the second angle partition is -180° to 0°.

[0069] In a second aspect, an embodiment of the present application provides an air conditioner fault detection device for performing fault detection on the above-mentioned air conditioner 1, the air conditioner fault detection device comprising: an amplitude comparison circuit, configured to determine whether the amplitude of the compressor exceeds an amplitude threshold; a fault determination circuit, configured to perform the following fault determination operations: in response to determining that the amplitude of the compressor exceeds the amplitude threshold, determining whether the phase current of the compressor is gradually decreasing and whether the measured values ​​of the exhaust temperature sensor within a preset time are all lower than the temperature threshold; in response to determining that the phase current of the compressor is gradually decreasing and the measured values ​​of the exhaust temperature sensor within a preset time are all lower than the temperature threshold, determining that the exhaust pipe is damaged or loose; in response to determining that the phase current of the compressor is not gradually decreasing or the measured values ​​of the exhaust temperature sensor within a preset time are not lower than the temperature threshold, determining that the compressor is faulty.

[0070] like Figure 5As shown, in the third aspect, the embodiment of the present application provides an air conditioner 1, which includes a compressor, an exhaust pipe, an exhaust temperature sensor, a processor 10 and a memory 20. The exhaust pipe is connected to the exhaust port of the compressor, and the exhaust temperature sensor is arranged on the exhaust pipe; the memory 20 stores a computer program, and when the computer program is executed by the processor 10, the air conditioner fault detection method provided in any of the above embodiments is implemented. The type of the air conditioner 1 can be determined according to actual needs, and can be, for example, a wall-mounted air conditioner, a cabinet air conditioner, a window air conditioner, etc., which is not limited in the embodiment of the present application.

[0071] The processor 10 is connected to the memory 20, and can perform various actions and processes according to the program stored in the memory 20. Specifically, the processor 10 can be an integrated circuit chip with signal processing capabilities. The above-mentioned processor 10 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc., which can be an X86 architecture or an ARM architecture.

[0072] The memory 20 may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronously linked dynamic random access memory (SLDRAM), and direct memory bus random access memory (DRRAM). It should be noted that the memory 20 of the method described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0073] In some embodiments, the air conditioner may include a six-axis sensor, which is used to measure the amplitude of the compressor along a preset direction. The type of the six-axis sensor can be determined according to actual needs, and the embodiments of the present application are not limited to this; in some examples, the six-axis sensor may include a three-axis gyroscope and a three-axis accelerometer, and the three-axis gyroscope and the three-axis accelerometer are integrated in the same sensor structure. The six-axis sensor has the advantages of small size and high measurement accuracy, and can measure the acceleration and angular velocity of the compressor along the up-down / left-right / front-back directions.

[0074] In some examples, a snap-fit ​​portion may be provided at the bottom of the compressor, and the six-axis sensor may be snap-fitted to the snap-fit ​​portion.

[0075] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. The computer program is loaded by the processor 10 to execute the steps in the control method of any of the above embodiments.

[0076] 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.

[0077] The above is a detailed introduction to an air conditioner and its fault detection method, device, and computer-readable storage medium provided in the embodiments of the present application. Specific examples are used herein 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 detecting air conditioner faults, characterized in that: The air conditioner comprises a compressor, an exhaust pipe and an exhaust temperature sensor, the exhaust pipe is connected to the exhaust port of the compressor, and the air conditioner fault detection method comprises: determining whether the amplitude of the compressor exceeds an amplitude threshold; In response to determining that the amplitude of the compressor exceeds the amplitude threshold, determining whether the phase current of the compressor satisfies a preset change condition and whether the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is less than the fluctuation amplitude threshold; In response to determining that the phase current of the compressor satisfies a preset change condition and that the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is less than a fluctuation amplitude threshold, determining that the exhaust pipe is ruptured; In response to determining that the phase current of the compressor does not satisfy a preset change condition or that the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is greater than or equal to a fluctuation amplitude threshold, it is determined that the compressor fails.

2. The air conditioner fault detection method according to claim 1, characterized in that: Determining whether the phase current of the compressor meets a preset change condition includes: Determining whether the phase current of the compressor is less than a current threshold value within a second preset time period; In response to determining that the phase current of the compressor is less than the current threshold value within a second preset time period, it is determined that the phase current of the compressor meets a preset change condition.

3. The air conditioner fault detection method according to claim 2, characterized in that: Determining whether the phase current of the compressor meets a preset change condition includes: In response to determining that the phase current of the compressor is greater than or equal to the current threshold at at least one moment within the second preset time length, determining whether the change trend of the phase current of the compressor within the second preset time length is gradually decreasing; In response to determining that the change trend of the phase current of the compressor within the second preset time period is gradually decreasing, determining that the phase current of the compressor meets a preset change condition; In response to determining that the change trend of the phase current of the compressor within the second preset time period is not gradually decreasing, it is determined that the phase current of the compressor does not meet the preset change condition.

4. The air conditioner fault detection method according to claim 1, characterized in that: The compressor is provided with a plurality of preset directions; determining whether the amplitude of the compressor exceeds an amplitude threshold comprises: Determine whether the vibration amplitudes of the compressor along the multiple preset directions all exceed the amplitude threshold, and whether the durations of the vibration amplitudes of the compressor along the multiple preset directions exceeding the amplitude threshold all exceed the time threshold; In response to determining that the amplitudes of the compressor along the multiple preset directions all exceed the amplitude threshold and the durations of the amplitudes of the compressor along the multiple preset directions exceeding the amplitude threshold all exceed the time threshold, it is determined that the amplitude of the compressor exceeds the amplitude threshold.

5. The air conditioner fault detection method according to claim 1, characterized in that: The air conditioner includes a gyroscope configured to measure a deviation angle of a preset axis on the compressor, the preset axis extending in a preset direction; Before determining whether the amplitude of the compressor exceeds an amplitude threshold, the air conditioner fault detection method includes: Obtaining the angle of the preset axis at the current moment and the angle at the previous moment; In response to determining that the angle of the preset axis at the current moment and the angle at the previous moment are both located in the first angle partition or both located in the second angle partition, taking the difference between the angle of the preset axis at the current moment and the angle at the previous moment as the offset angle of the preset axis; In response to determining that the angle of the preset axis at the current moment is within the first angle partition and the angle of the preset axis at the previous moment is within the second angle partition, the offset angle of the preset axis is determined according to the following formula: Δδ=(180°+α) i )+(180°-a i-1 ) In response to determining that the angle of the preset axis at the current moment is within the second angle partition and the angle of the preset axis at the previous moment is within the first angle partition, the offset angle of the preset axis is determined according to the following formula: Δδ=(180°+α) i-1 )+(180°-a i ) Wherein, Δε is the offset angle of the preset axis, α i-1 is the angle of the preset axis at the previous moment, α i is the angle of the preset axis at the current moment, i is a positive integer and is greater than or equal to 2; the first angle partition is 0° to 180°, and the second angle partition is -180° to 0°.

6. An air conditioner fault detection device, characterized in that: The air conditioner comprises a compressor, an exhaust pipe and an exhaust temperature sensor, wherein the exhaust pipe is connected to the exhaust port of the compressor, and the air conditioner fault detection device comprises: an amplitude comparison circuit configured to determine whether the amplitude of the compressor exceeds an amplitude threshold; The fault determination circuit is configured to perform the following fault determination operations: In response to determining that the amplitude of the compressor exceeds the amplitude threshold, determining whether the phase current of the compressor satisfies a preset change condition and whether the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is less than the fluctuation amplitude threshold; In response to determining that the phase current of the compressor satisfies a preset change condition and that the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is less than a fluctuation amplitude threshold, determining that the exhaust pipe is ruptured; In response to determining that the phase current of the compressor does not satisfy a preset change condition or that the maximum fluctuation amplitude of the temperature of the exhaust pipe within a first preset time period is greater than or equal to a fluctuation amplitude threshold, it is determined that the compressor fails.

7. An air conditioner, characterized in that: include: A compressor, an exhaust pipe and an exhaust temperature sensor, wherein the exhaust pipe is connected to the exhaust port of the compressor, and the exhaust temperature sensor is arranged on the exhaust pipe; a memory storing a computer program; A processor, wherein when the computer program is executed by the processor, the air conditioner fault detection method according to any one of claims 1 to 5 is implemented.

8. The air conditioner according to claim 7, characterized in that: The air conditioner includes a six-axis sensor including a three-axis gyroscope and a three-axis accelerometer.

9. The air conditioner according to claim 8, characterized in that: A buckle portion is provided at the bottom of the compressor, and the six-axis sensor is buckled in the buckle portion.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in the air conditioner fault detection method according to any one of claims 1 to 5.

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