Air conditioner compressor operating range test method, device and air conditioner

Abstract

The present application relates to the technical field of digital signal processing, and particularly provides a kind of air compressor operating range test method, device and air conditioner, to solve the problem of existing compressor operating range test not enough automation, test accuracy low.For this purpose, the air conditioner compressor operating range test method of the present application comprises: obtaining the operating range to be detected, automatically setting the operating speed of air conditioner compressor according to the operating range to be detected, and automatically judging whether the air conditioner compressor is stable according to the terminal current rate of change and the preset rate of change threshold, when determining that the air conditioner compressor is stable, fault detection is carried out, when the detection result of fault detection is normal, another operating speed greater than the current operating speed is used to carry out the fault detection step, and finally the actual operating range of the air conditioner compressor is determined based on the detection results of fault detection under each operating speed, which realizes the effects of automated testing of compressor operating range, improves test accuracy, efficiency and saves labor.

Description

Technical Field

[0001] This invention relates to the field of digital signal processing technology, specifically providing a method, apparatus, and air conditioner for testing the operating range of an air conditioner compressor. Background Technology

[0002] Currently, when air conditioning products undergo operating range testing in performance laboratories, it is necessary to manually set the target speed for testing multiple times to test the operating range. For various voltages and different operating conditions, it is usually necessary to manually set the test to start from the lowest compressor speed through monitoring software. After the system is manually determined to be stable, the relevant system parameters of the compressor are recorded. Then, the speed is manually set and tested every 5-10 rpm until the system reports a fault or reaches the maximum speed.

[0003] Because the operating range test involves numerous voltage and operating conditions, and requires testing every 5-10 rpm between the compressor's lowest and highest frequencies, completing a single operating range test necessitates manually setting the target speed hundreds of times, and manually judging system stability is prone to errors. This process is time-consuming, lacks automation, has low testing accuracy, and requires significant manpower, hindering the improvement of testing efficiency. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problems of insufficient automation and low accuracy in the existing compressor operating range testing.

[0005] In a first aspect, the present invention provides a method for testing the operating range of an air conditioner compressor, comprising:

[0006] Obtain the minimum and maximum rotational speeds corresponding to the operating range to be detected;

[0007] The operating speed of the air conditioner compressor is set starting from the minimum speed and gradually increasing the speed, wherein the operating speed is greater than or equal to the minimum speed and less than or equal to the maximum speed. For each operating speed, the following fault detection steps are performed:

[0008] The air conditioning compressor is controlled to operate at the specified operating speed, and it is determined whether the rate of change of the terminal current of the air conditioning compressor is less than a preset rate of change threshold.

[0009] When the rate of change of the terminal current of the air conditioner compressor is less than the preset rate of change threshold, the air conditioner is fault detected.

[0010] When the fault detection result is normal, another operating speed greater than the current operating speed is obtained and the fault detection step is performed based on the other operating speed; when the fault detection result is abnormal, the fault detection step ends.

[0011] The actual operating range of the air conditioning compressor is determined based on the detection results of the fault detection corresponding to each of the aforementioned operating speeds.

[0012] In some embodiments, setting the operating speed of the air conditioning compressor by starting from the minimum speed and gradually increasing the speed includes:

[0013] The operating speed of the air conditioning compressor is set by starting from the minimum speed and gradually increasing the speed at preset speed intervals.

[0014] In some embodiments, controlling the air conditioning compressor to operate at the operating speed and determining whether the rate of change of the terminal current of the air conditioning compressor is less than a preset rate of change threshold includes:

[0015] The system controls the air conditioning compressor to operate at the specified speed and determines in real time or at preset intervals whether the rate of change of the terminal current of the air conditioning compressor is less than a preset rate of change threshold.

[0016] In some embodiments, the method further includes:

[0017] When the rate of change of the terminal current of the air conditioner compressor is less than the preset rate of change threshold, the system parameters of the air conditioner compressor corresponding to the current operating speed are acquired and output, wherein the system parameters of the air conditioner compressor include the drive input current, the compressor terminal current and the bus voltage.

[0018] In some embodiments, determining the actual operating range of the air conditioning compressor based on the detection results of the fault detection corresponding to each of the operating speeds includes:

[0019] The actual operating range of the air conditioning compressor is determined based on the operating speed corresponding to the normal operating speed in the operating range to be tested.

[0020] In some embodiments, when the fault detection result is normal, before obtaining another operating speed greater than the current operating speed and performing the fault detection step based on the other operating speed, the method further includes:

[0021] Determine whether the current operating speed is equal to the maximum speed;

[0022] When the current operating speed is equal to the maximum speed, the fault detection step ends; when the current operating speed is not equal to the maximum speed, another operating speed greater than the current operating speed is obtained and the fault detection step is performed based on the other operating speed.

[0023] In a second aspect, the present invention provides an air conditioner compressor operating range testing device, comprising:

[0024] The acquisition module is used to acquire the minimum and maximum rotational speeds corresponding to the operating range to be detected.

[0025] The setting module is used to set the operating speed of the air conditioner compressor by starting from the minimum speed and gradually increasing the speed, wherein the operating speed is greater than or equal to the minimum speed and less than or equal to the maximum speed.

[0026] The testing module is used to perform the following fault detection steps for each of the operating speeds:

[0027] The air conditioning compressor is controlled to operate at the specified operating speed, and it is determined whether the rate of change of the terminal current of the air conditioning compressor is less than a preset rate of change threshold.

[0028] When the rate of change of the terminal current of the air conditioner compressor is less than the preset rate of change threshold, the air conditioner is fault detected.

[0029] When the fault detection result is normal, another operating speed greater than the current operating speed is obtained and the fault detection step is performed based on the other operating speed; when the fault detection result is abnormal, the fault detection step ends.

[0030] The determining module is used to determine the actual operating range of the air conditioning compressor based on the detection results of the fault detection corresponding to each of the operating speeds.

[0031] In a third aspect, the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the air conditioning compressor operating range testing method described in any one of the preceding claims.

[0032] In a fourth aspect, the present invention provides an electronic device comprising: a memory and a controller, wherein the memory stores a computer program, and the computer program, when executed by the controller, implements the air conditioning compressor operating range testing method described in any one of the preceding claims.

[0033] In a fifth aspect, the present invention provides an air conditioner comprising: an air conditioner compressor, a memory, and a controller connected to the air conditioner compressor and the memory, wherein the memory stores a computer program, and when the computer program is executed by the controller, it drives the air conditioner compressor to operate and implements the air conditioner compressor operating range testing method described in any one of the above.

[0034] By employing the above technical solution, this invention can obtain the minimum and maximum speeds corresponding to the operating range to be tested; starting from the minimum speed and gradually increasing the speed to set the operating speed of the air conditioner compressor, where the operating speed is greater than or equal to the minimum speed and less than or equal to the maximum speed, the following fault detection steps are performed for each operating speed: controlling the air conditioner compressor to run at the operating speed and determining whether the terminal current change rate of the air conditioner compressor is less than a preset change rate threshold; when the terminal current change rate of the air conditioner compressor is less than the preset change rate threshold, fault detection is performed on the air conditioner; when the fault detection result is normal, another operating speed greater than the current operating speed is obtained and fault detection steps are performed based on the other operating speed; when the fault detection result is abnormal, fault detection ends; the actual operating range of the air conditioner compressor is determined based on the fault detection result. This method automatically sets the operating speed of the air conditioner compressor by the operating range to be tested and automatically determines whether the air conditioner compressor is running stably based on the terminal current change rate and a preset change rate threshold. When the air conditioner compressor is determined to be running stably, fault detection is performed, and when the fault detection result is normal, fault detection steps are performed based on another operating speed greater than the current operating speed. This achieves the effects of automated testing of the compressor operating range, improved testing accuracy and efficiency, and labor saving. Attached Figure Description

[0035] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0036] Figure 1 This is a flowchart illustrating a method for testing the operating range of an air conditioner compressor according to an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the online debugging window provided in an embodiment of the present invention;

[0038] Figure 3 This is a flowchart illustrating a method for testing the operating range of an air conditioner compressor according to another embodiment of the present invention;

[0039] Figure 4 This is a flowchart illustrating a method for testing the operating range of an air conditioner compressor according to another embodiment of the present invention.

[0040] Figure 5 This is a schematic diagram of the structure of an air conditioner compressor operating range testing device provided in an embodiment of the present invention. Detailed Implementation

[0041] Some embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0042] Currently, when air conditioning products undergo operating range testing in performance laboratories, it is necessary to manually set the target speed for testing multiple times to test the operating range. For various voltages and different operating conditions, it is usually necessary to manually set the test to start from the lowest compressor speed through monitoring software. After the system is manually determined to be stable, the relevant system parameters of the compressor are recorded. Then, the speed is manually set and tested every 5-10 rpm until the system reports a fault or reaches the maximum speed.

[0043] Because the operating range test involves numerous voltage and operating conditions, and requires testing every 5-10 rpm between the compressor's lowest and highest frequencies, completing a single operating range test necessitates manually setting the target speed hundreds of times, and manually judging system stability is prone to errors. This process is time-consuming, lacks automation, has low testing accuracy, and requires significant manpower, hindering the improvement of testing efficiency.

[0044] In view of this, the present invention provides a method for testing the operating range of an air conditioner compressor. This method involves obtaining the minimum and maximum speeds corresponding to the operating range to be tested; setting the operating speed of the air conditioner compressor by starting from the minimum speed and gradually increasing the speed, where the operating speed is greater than or equal to the minimum speed and less than or equal to the maximum speed; and performing the following fault detection steps for each operating speed: controlling the air conditioner compressor to run at the specified operating speed and determining whether the rate of change of the terminal current of the air conditioner compressor is less than a preset rate of change threshold; performing fault detection on the air conditioner when the rate of change of the terminal current of the air conditioner compressor is less than the preset rate of change threshold; obtaining another operating speed greater than the current operating speed and performing fault detection steps based on this other operating speed; ending the fault detection when the fault detection result is abnormal; and determining the actual operating range of the air conditioner compressor based on the fault detection results. This method automatically sets the operating speed of the air conditioner compressor within the operating range to be tested and automatically determines whether the air conditioner compressor is operating stably based on the terminal current change rate and a preset change rate threshold. When the air conditioner compressor is determined to be operating stably, fault detection is performed. If the fault detection result is normal, a fault detection step is performed based on another operating speed greater than the current operating speed. This achieves the effects of automating the testing of the compressor's operating range, improving testing accuracy and efficiency, and saving manpower.

[0045] See Figure 1 As shown, Figure 1 This is a flowchart illustrating a method for testing the operating range of an air conditioner compressor according to an embodiment of the present invention, which includes:

[0046] Step S11: Obtain the minimum and maximum speeds corresponding to the operating range to be detected;

[0047] Step S12: Set the operating speed of the air conditioner compressor by starting from the minimum speed and gradually increasing the speed. The operating speed should be greater than or equal to the minimum speed and less than or equal to the maximum speed. Perform the following fault detection steps for each operating speed:

[0048] Step S13: Control the air conditioner compressor to run at the operating speed and determine whether the terminal current change rate of the air conditioner compressor is less than the preset change rate threshold.

[0049] Step S14: When the terminal current change rate of the air conditioner compressor is less than the preset change rate threshold, perform fault detection on the air conditioner;

[0050] When the fault detection result is normal, obtain another operating speed that is greater than the current operating speed and perform fault detection steps S13 and S14 based on the other operating speed; when the fault detection result is abnormal, end the fault detection steps and execute step S15.

[0051] Step S15: Determine the actual operating range of the air conditioning compressor based on the fault detection results corresponding to each operating speed.

[0052] The operating range to be tested can be set according to the operating conditions to be tested and the user's needs. In some embodiments, it can be achieved through, for example... Figure 2 In the online debugging window shown, enter the minimum and maximum speeds of the operating range to be tested.

[0053] In some embodiments, step S12 may specifically involve setting the operating speed of the air conditioning compressor by starting from the minimum speed and gradually increasing the speed at preset speed intervals. As a specific example, if the preset speed interval is 5 rpm, the minimum speed of the operating range to be detected is 20 rpm, and the maximum speed is 100 rpm, then the operating speed of the air conditioning compressor can be set sequentially based on 20 rpm, 25 rpm, 30 rpm...95 rpm and 100 rpm.

[0054] In this embodiment of the invention, the preset rate of change threshold can be set according to requirements.

[0055] In some embodiments, step S13 may specifically involve controlling the air conditioning compressor to operate at its operating speed and determining in real time or at preset time intervals whether the rate of change of the terminal current of the air conditioning compressor is less than a preset rate of change threshold. As an example, it can be determined whether the rate of change of the terminal current of the air conditioning compressor is less than the preset rate of change threshold 5 minutes after the air conditioning compressor starts operating at its current operating speed, thereby saving data processing resources.

[0056] In step S13, by determining whether the rate of change of the terminal current of the air conditioner compressor at the current operating speed is less than a preset rate of change threshold, it is possible to automatically determine whether the air conditioner compressor is operating stably, thereby effectively improving the accuracy of the test.

[0057] In some embodiments, step S14 may specifically involve determining that the air conditioner compressor is operating stably when the terminal current change rate of the air conditioner compressor is less than a preset change rate threshold, and using existing methods to perform fault detection on the air conditioner to determine whether the air conditioner is operating normally at the current operating speed. For example, the communication status between the indoor and outdoor units of the air conditioner can be detected; if a communication abnormality occurs, a fault is determined to have occurred at the current operating speed.

[0058] When the fault detection result is normal, another operating speed higher than the current operating speed is obtained, and fault detection steps S13 and S14 are performed based on this other operating speed. For a specific example, if the current speed is 25 rpm and the detection result is normal, the air conditioner compressor is controlled to run at 30 rpm. In response to a command that the terminal current change rate of the air conditioner compressor is less than a preset change rate threshold, fault detection is performed on the air conditioner to determine whether the air conditioner operates normally after increasing the operating speed. If the air conditioner operates normally, the operating speed is further increased, and steps S13 and S14 are repeated based on the increased operating speed until the operating speed reaches the maximum speed or the fault detection result is abnormal.

[0059] When the fault detection result is abnormal, the fault detection step ends. In some embodiments, fault codes can also be used for fault warning.

[0060] In some embodiments, step S15 may specifically involve determining the actual operating range of the air conditioning compressor based on the operating speed corresponding to the normal operating speed of the fault detection result within the operating range to be detected. As a specific example, when the fault detection results corresponding to the operating speeds of 20 rpm, 25 rpm, 30 rpm...70 rpm are all normal, and when the fault detection result corresponding to the operating speed of 75 rpm is abnormal, then the actual operating range can be determined to be [20 rpm, 70 rpm] based on the operating speed corresponding to the normal detection result.

[0061] This invention provides a method for testing the operating range of an air conditioner compressor. The method involves obtaining the minimum and maximum speeds corresponding to the operating range to be tested; setting the operating speed of the air conditioner compressor starting from the minimum speed and gradually increasing it, where the operating speed is greater than or equal to the minimum speed and less than or equal to the maximum speed; and performing the following fault detection steps for each operating speed: controlling the air conditioner compressor to run at the specified operating speed and determining whether the rate of change of the compressor's terminal current is less than a preset threshold; performing fault detection on the air conditioner when the rate of change of the compressor's terminal current is less than the preset threshold; if the fault detection result is normal, obtaining another operating speed greater than the current operating speed and performing fault detection steps based on this other operating speed; ending the fault detection when the fault detection result is abnormal; and determining the actual operating range of the air conditioner compressor based on the fault detection results. This method automatically sets the operating speed of the air conditioner compressor within the operating range to be tested and automatically determines whether the air conditioner compressor is operating stably based on the rate of change of the terminal current and a preset threshold, achieving automated testing of the compressor's operating range, improving testing accuracy and efficiency, and saving manpower.

[0062] See Figure 3 As shown, Figure 3 This is a flowchart illustrating a method for testing the operating range of an air conditioner compressor according to another embodiment of the present invention, which includes:

[0063] Step S21: Obtain the minimum and maximum speeds corresponding to the operating range to be detected;

[0064] Step S22: Set the operating speed of the air conditioner compressor by starting from the minimum speed and gradually increasing the speed. The operating speed should be greater than or equal to the minimum speed and less than or equal to the maximum speed. Perform the following fault detection steps for each operating speed:

[0065] Step S23: Control the air conditioner compressor to run at the operating speed and determine whether the terminal current change rate of the air conditioner compressor is less than the preset change rate threshold.

[0066] Step S24: When the rate of change of the terminal current of the air conditioner compressor is less than the preset rate of change threshold, perform fault detection on the air conditioner;

[0067] Step S25: When the fault detection result is normal, determine whether the current operating speed is equal to the maximum speed;

[0068] When the current operating speed is equal to the maximum speed, the fault detection step ends and step S26 is executed; when the current operating speed is not equal to the maximum speed, another operating speed greater than the current operating speed is obtained and fault detection steps S23 to S25 are performed based on the other operating speed.

[0069] When the fault detection result is abnormal, the fault detection step ends and step S26 is executed.

[0070] Step S26: Determine the actual operating range of the air conditioning compressor based on the fault detection results corresponding to each operating speed.

[0071] The operating range to be tested can be set according to the operating conditions to be tested and the user's needs. In some embodiments, it can be achieved through, for example... Figure 2 In the online debugging window shown, enter the minimum and maximum speeds of the operating range to be tested.

[0072] In some embodiments, step S22 may specifically involve setting the operating speed of the air conditioning compressor by starting from the minimum speed and gradually increasing the speed at preset speed intervals. As a specific example, if the preset speed interval is 5 rpm, the minimum speed of the operating range to be detected is 20 rpm, and the maximum speed is 100 rpm, then the operating speed of the air conditioning compressor can be set sequentially based on 20 rpm, 25 rpm, 30 rpm...95 rpm and 100 rpm.

[0073] In this embodiment of the invention, the preset rate of change threshold can be set according to requirements.

[0074] In some embodiments, step S23 may specifically involve controlling the air conditioning compressor to operate at its operating speed and determining in real time or at preset time intervals whether the rate of change of the terminal current of the air conditioning compressor is less than a preset rate of change threshold. As an example, it can be determined whether the rate of change of the terminal current of the air conditioning compressor is less than the preset rate of change threshold 5 minutes after the air conditioning compressor starts operating at its current operating speed, thereby saving data processing resources.

[0075] In step S23, by determining whether the rate of change of the terminal current of the air conditioner compressor at the current operating speed is less than a preset rate of change threshold, it is possible to automatically determine whether the air conditioner compressor is operating stably, thereby effectively improving the accuracy of the test.

[0076] In some embodiments, step S24 may specifically involve determining that the air conditioner compressor is operating stably when the terminal current change rate of the air conditioner compressor is less than a preset change rate threshold, and using existing methods to perform fault detection on the air conditioner to determine whether the air conditioner is operating normally at the current operating speed. For example, the communication status between the indoor and outdoor units of the air conditioner can be detected; if a communication abnormality occurs, a fault is determined to have occurred at the current operating speed.

[0077] In some embodiments, step S25 may specifically involve, when the fault detection result is normal, comparing the current operating speed with the maximum speed within the detection range to determine whether the current operating speed is equal to the maximum speed. This step determines whether to acquire another operating speed greater than the current operating speed. If the current operating speed is equal to the maximum speed, the acquisition of the other operating speed is not required, the fault detection step ends, and step S26 is executed. If the current operating speed is not equal to the maximum speed, the acquisition of the other operating speed continues, and fault detection steps S23 to S25 are executed based on the other operating speed, thereby effectively improving the automation level of the testing process.

[0078] As a specific example, when the current speed is 25 rpm and the detection result is normal, it is determined that the current speed is less than the maximum speed of 100 rpm. An additional operating speed of 30 rpm is obtained, and the air conditioner compressor is controlled to operate based on this operating speed. In response to an instruction that the terminal current change rate of the air conditioner compressor is less than a preset change rate threshold, a fault detection is performed on the air conditioner to determine whether the air conditioner operates normally after increasing the operating speed. If the air conditioner operates normally, the operating speed is further increased, and steps S23 to S25 are repeated cyclically based on the increased operating speed until the operating speed reaches the maximum speed or the fault detection result is abnormal.

[0079] When the fault detection result is abnormal, the fault detection step ends. In some embodiments, fault codes can also be used for fault warning.

[0080] In some embodiments, step S26 may specifically involve determining the actual operating range of the air conditioning compressor based on the operating speed corresponding to the normal operating speed of the fault detection result within the operating range to be detected. As a specific example, when the fault detection results corresponding to the operating speeds of 20 rpm, 25 rpm, 30 rpm...70 rpm are all normal, and when the fault detection result corresponding to the operating speed of 75 rpm is abnormal, then the actual operating range can be determined to be [20 rpm, 70 rpm] based on the operating speed corresponding to the normal detection result.

[0081] The above is another embodiment of the present invention providing a method for testing the operating range of an air conditioner compressor, which can achieve the same results as... Figure 1 The illustrated embodiment exhibits the same beneficial effects. In addition, by determining whether the current operating speed is equal to the maximum speed before obtaining another operating speed greater than the current operating speed and performing the fault detection step based on the other operating speed when the fault detection result is normal, the fault detection step ends when the current operating speed is equal to the maximum speed; and continues to obtain another operating speed greater than the current operating speed and perform the fault detection step based on the other operating speed when the current operating speed is not equal to the maximum speed, the automation level of the testing process is further effectively improved.

[0082] In some embodiments, system parameters of the air conditioning compressor at various operating speeds can also be obtained to determine whether the air conditioning compressor is in optimal operating condition. See the description below for details.

[0083] See Figure 4 As shown, Figure 4 This is a flowchart illustrating an air conditioner compressor operating range testing method according to another embodiment of the present invention. It should be noted that this embodiment can be based on the above... Figure 1 or Figure 3 The corresponding embodiments are carried out based on Figure 3 The illustrated embodiment is used as an example to describe this solution. It may include:

[0084] Step S31: Obtain the minimum and maximum speeds corresponding to the operating range to be detected;

[0085] Step S32: Set the operating speed of the air conditioner compressor by starting from the minimum speed and gradually increasing the speed. The operating speed should be greater than or equal to the minimum speed and less than or equal to the maximum speed. Perform the following fault detection steps for each operating speed:

[0086] Step S33: Control the air conditioner compressor to run at the operating speed and determine whether the terminal current change rate of the air conditioner compressor is less than the preset change rate threshold;

[0087] When the rate of change of the terminal current of the air conditioner compressor is less than the preset rate of change threshold, steps S34 and S36 are executed.

[0088] Step S34: Obtain and output the system parameters of the air conditioning compressor corresponding to the current operating speed, wherein the system parameters of the air conditioning compressor include the drive input current, the compressor terminal current and the bus voltage;

[0089] Step S35: Perform fault detection on the air conditioner;

[0090] Step S36: When the fault detection result is normal, determine whether the current operating speed is equal to the maximum speed;

[0091] When the current operating speed is equal to the maximum speed, the fault detection step ends and step S37 is executed; when the current operating speed is not equal to the maximum speed, another operating speed greater than the current operating speed is obtained and fault detection steps S33-S36 are performed based on the other operating speed.

[0092] When the fault detection result is abnormal, the fault detection step ends and step S37 is executed.

[0093] Step S37: Determine the actual operating range of the air conditioning compressor based on the fault detection results corresponding to each operating speed.

[0094] Steps S31-S33 and S35-S37 can be implemented in the same way as steps S21-S26, and will not be repeated here for the sake of brevity. Please refer to the description above for details. It should be noted that step S34 can be executed simultaneously with step S35. The above example is only to show that step S34 is executed first and then step S35.

[0095] In some embodiments, step S34 acquires and outputs the drive input current, compressor terminal current and bus voltage corresponding to the current operating speed. For each system parameter, a relationship curve between the operating speed and the system parameter is constructed using multiple operating speeds and corresponding system parameters. The relationship curve is compared with the relationship curve under the optimal operating state. Specifically, the system parameter values ​​corresponding to the same operating speed can be compared to determine whether the air conditioning compressor is in the optimal operating state.

[0096] The above is another embodiment of the present invention that provides a method for testing the operating range of an air conditioner compressor. It can achieve the same beneficial effects as any of the above embodiments. In addition, it can obtain the system parameters corresponding to the current operating speed when the terminal current change rate of the air conditioner compressor is less than a preset change rate threshold. The system parameters can then be used to determine whether the air conditioner compressor is in the optimal operating state and to make timely adjustments when it is not in the optimal operating state.

[0097] See Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of an air conditioner compressor operating range testing device provided in an embodiment of the present invention, which includes:

[0098] The acquisition module 51 is used to acquire the minimum and maximum speeds corresponding to the operating range to be detected.

[0099] Setting module 52 is used to set the operating speed of the air conditioner compressor by starting from the minimum speed and gradually increasing the speed, wherein the operating speed is greater than or equal to the minimum speed and less than or equal to the maximum speed.

[0100] Test module 53 is used to perform the following fault detection steps for each operating speed:

[0101] Control the air conditioner compressor to run at the operating speed and determine whether the rate of change of the terminal current of the air conditioner compressor is less than the preset rate of change threshold.

[0102] When the rate of change of the terminal current of the air conditioner compressor is less than the preset rate of change threshold, the air conditioner is fault detected.

[0103] When the fault detection result is normal, obtain another operating speed greater than the current operating speed and perform the fault detection step based on the other operating speed; when the fault detection result is abnormal, end the fault detection step.

[0104] The determination module 54 is used to determine the actual operating range of the air conditioning compressor based on the detection results of fault detection corresponding to each operating speed.

[0105] The air conditioner compressor operating range testing device provided by this invention can be used to perform the above-described air conditioner compressor operating range testing method, achieving the same beneficial effects as the air conditioner compressor operating range testing method in the above embodiments. Furthermore, it should be understood that since the various modules are only set to illustrate the functional units of the device of this invention, the physical devices corresponding to these modules can be the processor itself, or a part of the processor's software, hardware, or a combination of software and hardware. Therefore, Figure 5 The number of modules shown is merely illustrative. Those skilled in the art will understand that the modules in the device can be adaptively split or combined. Such splitting or combining of specific modules will not cause the technical solution to deviate from the principles of the present invention; therefore, the technical solutions after splitting or combining will fall within the protection scope of the present invention.

[0106] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable storage medium can include any entity or device capable of carrying the computer program code, a medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory, a random access memory, an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0107] Another aspect of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the air conditioner compressor operating range testing method in any of the above embodiments. This computer-readable storage medium can be a storage device comprising various electronic devices; optionally, in the embodiments of the present invention, the computer-readable storage medium is a non-transitory computer-readable storage medium.

[0108] In another aspect, the present invention provides an electronic device comprising: a memory and a controller, wherein the memory stores a computer program, and the computer program, when executed by the controller, implements the air conditioner compressor operating range testing method described in any of the above embodiments.

[0109] In another aspect, the present invention provides an air conditioner that may include:

[0110] An air conditioning compressor, a memory, and a controller connected to the air conditioning compressor and the memory, wherein the memory stores a computer program, and when the computer program is executed by the controller, it drives the air conditioning compressor to operate and implements the air conditioning compressor operating range testing method described in any of the above embodiments.

[0111] An air conditioner may include an indoor unit and an outdoor unit, and the air conditioner compressor may be installed inside the casing of the outdoor unit.

[0112] The air conditioner provided by this invention can be used to perform the above-described air conditioner compressor operating range test method, achieving the same beneficial effects as the air conditioner compressor operating range test method in the above embodiments.

[0113] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A method of testing the operating range of an air conditioner compressor, characterized by, include: Obtain the minimum and maximum rotational speeds corresponding to the operating range to be detected; The operating speed of the air conditioner compressor is set starting from the minimum speed and gradually increasing the speed, wherein the operating speed is greater than or equal to the minimum speed and less than or equal to the maximum speed. For each operating speed, the following fault detection steps are performed: The air conditioning compressor is controlled to operate at the specified operating speed, and it is determined whether the rate of change of the terminal current of the air conditioning compressor is less than a preset rate of change threshold. When the rate of change of the terminal current of the air conditioner compressor is less than the preset rate of change threshold, the air conditioner is fault detected. When the fault detection result is normal, obtain another operating speed that is greater than the current operating speed and perform the fault detection step based on the other operating speed; When the fault detection result is abnormal, the fault detection step ends; The actual operating range of the air conditioning compressor is determined based on the detection results of the fault detection corresponding to each of the aforementioned operating speeds. The method further includes: When the terminal current change rate of the air conditioner compressor is less than the preset change rate threshold, the system parameters of the air conditioner compressor corresponding to the current operating speed are acquired and output. For each system parameter, a relationship curve between operating speed and system parameter is constructed using multiple operating speeds and corresponding system parameters. Based on the comparison between the relationship curve and the relationship curve under the optimal operating state, it is determined whether the air conditioning compressor is in the optimal operating state.

2. The method of claim 1, wherein, Setting the operating speed of the air conditioner compressor by starting from the minimum speed and gradually increasing the speed includes: The operating speed of the air conditioning compressor is set by starting from the minimum speed and gradually increasing the speed at preset speed intervals.

3. The method of claim 1, wherein, The control of the air conditioning compressor to operate at the specified operating speed, and the determination of whether the rate of change of the terminal current of the air conditioning compressor is less than a preset rate of change threshold, includes: The system controls the air conditioning compressor to operate at the specified speed and determines in real time or at preset intervals whether the rate of change of the terminal current of the air conditioning compressor is less than a preset rate of change threshold.

4. The method of claim 1, wherein, The system parameters of the air conditioning compressor include drive input current, compressor terminal current, and bus voltage.

5. The method according to any one of claims 1 to 4, characterized in that, Determining the actual operating range of the air conditioning compressor based on the detection results of the fault detection corresponding to each of the operating speeds includes: The actual operating range of the air conditioning compressor is determined based on the operating speed corresponding to the normal operating speed in the operating range to be tested.

6. The method of claim 1, wherein, When the fault detection result is normal, before obtaining another operating speed greater than the current operating speed and performing the fault detection step based on the other operating speed, the method further includes: Determine whether the current operating speed is equal to the maximum speed; When the current operating speed is equal to the maximum speed, the fault detection step ends; when the current operating speed is not equal to the maximum speed, another operating speed greater than the current operating speed is obtained and the fault detection step is performed based on the other operating speed.

7. An air conditioner compressor operating range testing device characterized by, include: The acquisition module is used to acquire the minimum and maximum rotational speeds corresponding to the operating range to be detected. The setting module is used to set the operating speed of the air conditioner compressor by starting from the minimum speed and gradually increasing the speed, wherein the operating speed is greater than or equal to the minimum speed and less than or equal to the maximum speed. The testing module is used to perform the following fault detection steps for each of the operating speeds: The air conditioning compressor is controlled to operate at the specified operating speed, and it is determined whether the rate of change of the terminal current of the air conditioning compressor is less than a preset rate of change threshold. When the rate of change of the terminal current of the air conditioner compressor is less than the preset rate of change threshold, the air conditioner is fault detected. When the fault detection result is normal, obtain another operating speed that is greater than the current operating speed and perform the fault detection step based on the other operating speed; When the fault detection result is abnormal, the fault detection step ends; The determining module is used to determine the actual operating range of the air conditioning compressor based on the detection results of the fault detection corresponding to each of the operating speeds; Used for: When the terminal current change rate of the air conditioner compressor is less than the preset change rate threshold, the system parameters of the air conditioner compressor corresponding to the current operating speed are acquired and output. For each system parameter, a relationship curve between operating speed and system parameter is constructed using multiple operating speeds and corresponding system parameters. Based on the comparison between the relationship curve and the relationship curve under the optimal operating state, it is determined whether the air conditioning compressor is in the optimal operating state.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the air conditioning compressor operating range testing method according to any one of claims 1 to 6.

9. An electronic device, comprising: include: A memory and a controller, wherein the memory stores a computer program, which, when executed by the controller, implements the air conditioning compressor operating range testing method according to any one of claims 1 to 6.

10. An air conditioner characterized by comprising: include: An air conditioning compressor, a memory, and a controller connected to the air conditioning compressor and the memory, wherein the memory stores a computer program, and when the computer program is executed by the controller, it drives the air conditioning compressor to operate and implements the air conditioning compressor operating range testing method according to any one of claims 1 to 6.

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