Double-compressor fault early warning method and device and air conditioner

Abstract

The invention provides a double-compressor fault early warning method and device and an air conditioner, and is applied to the field of air conditioner control. The method comprises the steps that firstly, the operation frequencies of two compressors are monitored, and whether a preset detection triggering condition is met or not is judged; then, under the condition that the operation frequencies of the two compressors meet the preset detection triggering condition, a preset fault detection method is used for executing fault detection on the two compressors; and finally, when it is detected that any one of the two compressors breaks down, fault processing operation is executed, and fault early warning prompt information is sent to the server. According to the double-compressor fault early warning method and device and the air conditioner, fault early warning is carried out in advance before a certain compressor breaks down, after-sales personnel can be notified to maintain spare parts in time, and great influence on normal use of a user is avoided.

Description

Technical Field

[0001] This application relates to the field of air conditioner control, and particularly to a dual-compressor fault warning method, device, and air conditioner. Background Art

[0002] With the continuous improvement of people's living standards and the continuous improvement of the intelligent level of household appliances, intelligent household appliances are becoming more and more popular. Users can use the air conditioner for heating in winter to increase the indoor temperature; they can also use the air conditioner for cooling in summer to lower the indoor temperature.

[0003] In the related art, compared with a single-compressor air conditioner, a dual-compressor multi-connected air conditioner can control only one compressor to work under a low-load operating state; under high load, the overall start-stop times of the compressors will also be lower, the control accuracy is higher, and the service life of the compressors is also longer.

[0004] However, after long-term operation of a dual-compressor multi-connected air conditioner, there may be a problem that one compressor has a large current and the other compressor has a small current. After long-term operation, a certain compressor may malfunction, resulting in equipment shutdown, and thus affecting the user experience. Summary of the Invention

[0005] The purpose of this application is to provide a dual-compressor fault warning method, device, and air conditioner, which are used to give a fault warning in advance before a certain compressor malfunctions, and can notify after-sales personnel to prepare spare parts for maintenance in time, so as to avoid having a greater impact on the normal use of users.

[0006] This application provides a dual-compressor fault warning method, including: Monitoring the operating frequencies of the two compressors to determine whether a preset detection trigger condition is met; when the operating frequencies of the two compressors meet the preset detection trigger condition, performing a fault detection on the two compressors using a preset fault detection method; when it is detected that any one of the two compressors malfunctions, performing a fault handling operation and sending a fault warning prompt message to the server; wherein, the preset fault detection method makes a fault judgment based on the following conditions: the deviation ratio of the current values of the two compressors, the deviation ratio of the actual current value corresponding to the operating frequency of each compressor among the two compressors under a target comparison parameter to the standard current value; the target comparison parameter includes at least one of the following: ambient working condition, suction pressure, discharge pressure.

[0007] In this way, a fault warning can be given in advance before a certain compressor malfunctions, and after-sales personnel can be notified to prepare spare parts for maintenance in time, so as to avoid having a greater impact on the normal use of users.

[0008] Optionally, the preset detection trigger condition includes: a first trigger condition; monitoring the operating frequencies of the two compressors to determine whether the preset detection trigger condition is satisfied, including: when the air conditioner is powered on and the two compressors continuously operate for a first preset duration, if the deviation ratio of the current values of the two compressors is greater than or equal to a first deviation ratio threshold, and / or the deviation ratio of the actual current value corresponding to the operating frequency of any one of the two compressors under the target comparison parameter and the standard current value is greater than a second deviation ratio threshold, it is determined that the first trigger condition is satisfied.

[0009] Optionally, the preset detection trigger condition further includes: a second trigger condition; monitoring the operating frequencies of the two compressors to determine whether the preset detection trigger condition is satisfied, including: when the two compressors continuously operate at the same operating frequency for a second preset duration and the operating frequency of any one of the two compressors is greater than or equal to a preset ratio threshold of the maximum operating frequency, it is determined that the second trigger condition is satisfied; when both the first trigger condition and the second trigger condition are satisfied, it is determined that the operating frequencies of the two compressors satisfy the preset detection trigger condition.

[0010] In this way, fault detection can be performed when the detection conditions are met, avoiding occupying too much computing resources.

[0011] Optionally, using the preset fault detection method to perform fault detection on the two compressors includes: calculating the number of times the two compressors meet the preset fault conditions within a target detection period; when the number of times the two compressors meet the preset fault conditions is greater than or equal to a first preset number threshold, it is determined that a warning compressor is detected.

[0012] In this way, it can be directly determined whether a warning compressor is detected through the number of times the preset fault conditions are met within a detection period.

[0013] Optionally, using the preset fault detection method to perform fault detection on the two compressors includes: when the number of times the two compressors meet the preset fault conditions is less than the first preset number threshold, extending the target detection period, and calculating the number of times the two compressors meet the preset fault conditions within the target detection period based on the extended target detection period until a preset termination condition is met; where the preset termination condition includes any one of the following: the number of times the target detection period is extended reaches a second preset number threshold and the number of times the two compressors meet the preset fault conditions is less than the first preset number threshold, the number of times the two compressors meet the preset fault conditions is greater than or equal to the first preset number threshold.

[0014] In this way, when the warning compressor is not detected within a short period, cyclic detection can be performed by extending the detection period.

[0015] Optionally, calculating the number of times the two compressors meet the preset fault condition within the target detection period based on the extended target detection period, until after meeting the preset termination condition, the method further includes: when the number of times of extending the target detection period reaches the second preset number threshold and the number of times the two compressors meet the preset fault condition is less than the first preset number threshold, determining that neither of the two compressors has a fault.

[0016] In this way, when the cyclic detection still does not meet the determination condition, it is determined that both compressors are normal.

[0017] Optionally, the step of determining whether the two compressors meet the preset fault condition includes: when the first fault condition and the second fault condition are met, determining that the two compressors meet the preset fault condition; the first fault condition is that the deviation ratio of the current values of the two compressors is greater than the third deviation ratio threshold and lasts for more than the second preset duration; the second fault condition is that the deviation ratio of the actual current value corresponding to the operating frequency of any target compressor among the two compressors under the target comparison parameter and the standard current value is greater than the fourth deviation ratio threshold; and determining the target compressor as the warning compressor.

[0018] In this way, when a warning compressor is detected, the specific warning compressor can be determined through the two fault conditions.

[0019] This application also provides a dual-compressor fault warning device, including: A judgment module, configured to monitor the operating frequencies of the two compressors and judge whether the preset detection trigger condition is met; a detection module, configured to perform fault detection on the two compressors using a preset fault detection method when the operating frequencies of the two compressors meet the preset detection trigger condition; an execution module, configured to perform a fault handling operation and send a fault warning prompt message to the server when a fault occurs in any one of the two compressors; wherein, the preset fault detection method makes a fault judgment based on the following conditions: the deviation ratio of the current values of the two compressors, and the deviation ratio of the actual current value corresponding to the operating frequency of each compressor among the two compressors under the target comparison parameter and the standard current value; the target comparison parameter includes at least one of the following: ambient working condition, suction pressure, and discharge pressure.

[0020] Optionally, the preset detection trigger condition includes: a first trigger condition; the judging module is specifically configured to, when the air conditioner is powered on and the two compressors continuously operate for a first preset duration, if the deviation ratio of the current values of the two compressors is greater than or equal to a first deviation ratio threshold, and / or the deviation ratio of the actual current value corresponding to the operating frequency of any one of the two compressors under the target comparison parameter and the standard current value is greater than a second deviation ratio threshold, determine that the first trigger condition is satisfied.

[0021] Optionally, the preset detection trigger condition further includes: a second trigger condition; the judging module is specifically configured to determine that the second trigger condition is satisfied when the two compressors continuously operate at the same operating frequency for a second preset duration and the operating frequency of any one of the two compressors is greater than or equal to a preset ratio threshold of the maximum operating frequency; the judging module is further specifically configured to determine that the operating frequencies of the two compressors satisfy the preset detection trigger condition when both the first trigger condition and the second trigger condition are satisfied.

[0022] Optionally, the detection module is specifically configured to calculate the number of times the two compressors satisfy the preset fault condition within the target detection period; the detection module is further specifically configured to determine that a warning compressor is detected when the number of times the two compressors satisfy the preset fault condition is greater than or equal to a first preset number threshold.

[0023] Optionally, the detection module is specifically configured to, when the number of times the two compressors satisfy the preset fault condition is less than the first preset number threshold, extend the target detection period, and calculate the number of times the two compressors satisfy the preset fault condition within the target detection period based on the extended target detection period until a preset termination condition is satisfied; wherein the preset termination condition includes any one of the following: the number of times of extending the target detection period reaches a second preset number threshold and the number of times the two compressors satisfy the preset fault condition is less than the first preset number threshold, the number of times the two compressors satisfy the preset fault condition is greater than or equal to the first preset number threshold.

[0024] Optionally, the detection module is specifically configured to determine that neither of the two compressors has a fault when the number of times of extending the target detection period reaches the second preset number threshold and the number of times the two compressors satisfy the preset fault condition is less than the first preset number threshold.

[0025] Optionally, the detection module is specifically configured to determine that the two compressors meet the preset fault condition when the first fault condition and the second fault condition are met; the first fault condition is that the deviation ratio of the current values of the two compressors is greater than a third deviation ratio threshold and lasts for more than a second preset duration; the second fault condition is that the deviation ratio of the actual current value corresponding to the operating frequency of any target compressor among the two compressors under the target comparison parameter is greater than a fourth deviation ratio threshold; the detection module is further specifically configured to determine the target compressor as a warning compressor.

[0026] The present application further provides a computer program product, including computer programs / instructions, which when executed by a processor, implement the steps of the dual-compressor fault warning method as described in any one of the above.

[0027] The present application further provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the dual-compressor fault warning method as described in any one of the above are implemented.

[0028] The present application further provides an air conditioner, including two compressors, a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the dual-compressor fault warning method as described in any one of the above are implemented.

[0029] The present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the dual-compressor fault warning method as described in any one of the above are implemented.

[0030] The dual-compressor fault warning method, device, and air conditioner provided by the present application first monitor the operating frequencies of the two compressors to determine whether the preset detection trigger condition is met; then, when the operating frequencies of the two compressors meet the preset detection trigger condition, a preset fault detection method is used to perform fault detection on the two compressors; finally, when it is detected that any one of the two compressors fails, a fault handling operation is performed, and a fault warning prompt message is sent to the server; wherein, the preset fault detection method makes a fault judgment based on the following conditions: the deviation ratio of the current values of the two compressors, and the deviation ratio of the actual current value corresponding to the operating frequency of each compressor among the two compressors under the target comparison parameter to the standard current value; the target comparison parameter includes at least one of the following: environmental working condition, suction pressure, and discharge pressure. In this way, fault warning can be carried out in advance before a certain compressor fails, and after-sales personnel can be notified to prepare spare parts for repair in time, avoiding a greater impact on the normal use of users. Brief Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 is a schematic diagram of the operating principle of the air conditioner provided by the present application; Figure 2 is a schematic flowchart of the dual-compressor fault warning method provided by the present application; Figure 3 is a schematic structural diagram of the dual-compressor fault warning device provided by the present application; Figure 4 is a schematic structural diagram of the electronic device provided by the present application. Detailed Description of the Embodiments

[0033] To make the objectives, technical solutions, and advantages of the present application clearer, the following will clearly and completely describe the technical solutions in the present application with reference to the drawings in the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0034] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0035] The following will provide a detailed description of the operating principle of the air conditioner involved in the embodiments of the present application: As Figure 1As shown in the figure, the compressor compresses the refrigerant (coolant) and transports it to the condenser through a pipeline. The high-temperature and high-pressure gaseous refrigerant releases heat in the condenser and becomes a medium-temperature and high-pressure liquid refrigerant. After that, the medium-temperature and high-pressure liquid refrigerant is depressurized by a capillary tube (throttling unit) and becomes a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant is transported to the evaporator to evaporate from liquid to gas, and absorbs a large amount of heat during the evaporation process. Finally, the low-temperature and low-pressure gaseous refrigerant in the evaporator is transported to the compressor to participate in the next cycle. When the air conditioner is cooling, the heat exchanger of the outdoor unit is the condenser, and the heat exchanger of the indoor unit is the evaporator; conversely, when the air conditioner is heating, the heat exchanger of the outdoor unit is the evaporator, and the heat exchanger of the indoor unit is the condenser.

[0036] With the increasing popularity of air conditioners, especially in many offices and hotels and restaurants, the number of multi-split air conditioners is getting larger and larger. Many multi-split air conditioners with larger numbers are used in parallel with dual compressors, that is, there are two compressors in one air conditioner outdoor unit. The larger the number, the more complicated the installation and the more complex the operating environment. In extreme individual working conditions and operating modes, the compressor return pipe may even be inhaled with liquid due to the problem of adding more refrigerant during installation. In addition, the individual differences of compressors may cause a problem of one compressor with large current and one compressor with small current after long-term operation, and the large current has exceeded the set threshold. The compressor with large current may have a certain degree of wear and tear on its internal parts. In the long run, it may cause the compressor to be scrapped and report a fault. The compressor cannot be started directly or it will break out soon after it starts to run normally, and even the compressor may make abnormal noises and shake. If a compressor is damaged, it will waste a lot of time for after-sales inspection, temporary allocation of compressors and repairs, which will greatly affect the normal use of users.

[0037] In response to the above-mentioned technical problems existing in the related technology, an embodiment of the present application provides a dual-compressor fault warning method, which can provide early warning before one of the two compressors of a dual-compressor multi-split air conditioner fails, so that after-sales personnel can take timely measures to avoid the situation where the air conditioner cannot be used due to the long cycle of allocating and replacing the compressor.

[0038] The dual compressor fault warning method provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0039] like Figure 2 As shown, an embodiment of the present application provides a dual compressor fault warning method, which may include the following steps 201 to 203: Step 201: Monitor the operating frequencies of the two compressors to determine whether a preset detection trigger condition is met.

[0040] It can be understood that since fault detection consumes a certain amount of computing resources and the computing power of the air conditioner controller is relatively low, it is necessary to first determine whether the detection trigger conditions for triggering fault detection are met before starting fault detection. In the embodiments of the present application, two trigger conditions are set, that is, the above-mentioned preset detection trigger conditions include: a first trigger condition and a second trigger condition. Only when both of these two trigger conditions are met will fault detection be performed.

[0041] Specifically, for the above-mentioned first trigger condition, step 201 may include the following steps 201a: Step 201a: When the air conditioner is powered on and the two compressors continuously operate for a first preset duration, if the deviation ratio of the current values of the two compressors is greater than or equal to a first deviation ratio threshold, and / or the deviation ratio of the actual current value corresponding to the operating frequency of any one of the two compressors under the target comparison parameter from the standard current value is greater than a second deviation ratio threshold, it is determined that the first trigger condition is met.

[0042] Exemplarily, the deviation ratio P of the current values of the two compressors can be calculated by the following formula (1): P = MIN( ) (Formula 1)

[0043] Wherein, is the current value of one of the two compressors, is the current value of the other of the two compressors.

[0044] For example, when the air conditioner is powered on and running (in the cooling mode or heating mode), after the computer board detects that the two compressors have been running for 10 minutes (i.e., the above-mentioned first preset duration), if the deviation ratio of the current values of the two compressors is greater than or equal to 5% (i.e., the above-mentioned first deviation ratio threshold) and the deviation ratio of the actual current value of any one of the two compressors from the standard current value is greater than 5% (i.e., the above-mentioned second deviation ratio threshold), it is determined that the first trigger condition is met.

[0045] Specifically, for the above-mentioned second trigger condition, step 201 may include the following steps 201b1 and 201b2: Step 201b1: When the two compressors continuously operate at the same operating frequency for a second preset duration and the operating frequency of any one of the two compressors is greater than or equal to a preset ratio threshold of the maximum operating frequency, it is determined that the second trigger condition is met.

[0046] Step 201b2: When both the first trigger condition and the second trigger condition are satisfied, determine that the operating frequencies of the two compressors satisfy the preset detection trigger condition.

[0047] Exemplarily, in the embodiments of the present application, the above two compressors are two compressors of the same specification. For example, when the two compressors operate at the same operating frequency for 10 minutes (i.e., the above second preset duration, the second preset duration may be the same as or different from the first preset duration), and the operating power of any one compressor reaches 60% of its maximum operating power (i.e., the above preset detection trigger condition), it is determined that the second trigger condition is satisfied.

[0048] Exemplarily, when both the above first trigger condition and the second trigger condition are satisfied, a preset fault detection method can be used to perform fault detection on the two compressors.

[0049] It should be noted that the preset fault detection method in the embodiments of the present application is used to check the compressors that may have faults, that is, through this preset fault detection method, the compressors that are about to have faults can be identified and fault warnings can be given. This preset fault detection method can also detect faults when the compressors have faults.

[0050] Step 202: When the operating frequencies of the two compressors satisfy the preset detection trigger condition, use the preset fault detection method to perform fault detection on the two compressors.

[0051] Wherein, the preset fault detection method makes a fault judgment based on the following conditions: the deviation ratio of the current values of the two compressors, and the deviation ratio of the actual current value corresponding to the operating frequency of each compressor in the two compressors under the target comparison parameter to the standard current value; the target comparison parameter includes at least one of the following: ambient working condition, suction pressure, and discharge pressure.

[0052] Exemplarily, based on the above target comparison parameters, the standard operating frequencies of the compressors corresponding to different ambient working conditions, different suction pressures, and different discharge pressures can be determined, and the standard current values can be determined based on the standard operating frequencies. Then, the actual current value and the standard current value under the same conditions are compared to calculate the current deviation ratio.

[0053] Exemplarily, in the embodiments of the present application, different operations can be performed based on different detection results.

[0054] Case 1: Exemplarily, in Case 1, the warning compressor can be directly determined and a fault warning can be given.

[0055] Specifically, the above step 202 may include the following steps 202a1 and 202a2: Step 202a1: Calculate the number of times the two compressors meet the preset fault conditions within the target detection period.

[0056] Step 202a2: When the number of times the two compressors meet the preset fault conditions is greater than or equal to the first preset number threshold, determine that a warning compressor is detected.

[0057] Exemplarily, when within the above target detection period, the number of times the two compressors meet the preset fault conditions is greater than the first preset number threshold, it is determined that a warning compressor appears, and a fault warning is given.

[0058] Case 2: Exemplarily, in Case 2, it is impossible to directly determine the warning compressor, and cyclic fault detection is required.

[0059] Specifically, the above step 202 may further include the following step 202b: Step 202b: When the number of times the two compressors meet the preset fault conditions is less than the first preset number threshold, extend the target detection period, and calculate the number of times the two compressors meet the preset fault conditions within the extended target detection period until a preset termination condition is met.

[0060] The preset termination condition includes any one of the following: the number of times of extending the target detection period reaches the second preset number threshold and the number of times the two compressors meet the preset fault conditions is less than the first preset number threshold, the number of times the two compressors meet the preset fault conditions is greater than or equal to the first preset number threshold.

[0061] Exemplarily, when a warning compressor cannot be directly detected within the target detection period, the target detection period can be extended, and fault detection can be performed based on the extended target detection period. This step is cyclically executed until a warning compressor is detected, or the number of times of extending the period reaches the preset number threshold, then it can be determined that there is no warning compressor.

[0062] Specifically, the above step 202 may further include the following step 202c: Step 202c: When the number of times of extending the target detection period reaches the second preset number threshold and the number of times the two compressors meet the preset fault conditions is less than the first preset number threshold, determine that neither of the two compressors has a fault.

[0063] For example, taking the initial value of the target detection period as 6 hours, if the number of times the two compressors meet the preset fault conditions within these 6 hours is less than 5 times (i.e., the above-mentioned first preset number threshold), then extend the target detection period to 7 hours for detection again, and repeat the above steps until the target detection period is extended to 12 hours (i.e., the extension times reach 6 times, corresponding to the above-mentioned second preset number threshold), and the number of times the two compressors meet the preset fault conditions is still less than 5 times, then it can be determined that no warning compressor is detected. If during a certain detection process, the number of times the two compressors meet the preset fault conditions is greater than or equal to 5 times, then it can be determined that a warning compressor is detected.

[0064] In a possible implementation manner, in the above step 202, the step of determining whether the two compressors meet the preset fault conditions may include the following steps 202d1 and 202d2: Step 202c1, when the first fault condition and the second fault condition are met, determine that the two compressors meet the preset fault conditions.

[0065] Wherein, the first fault condition is that the deviation ratio of the current values of the two compressors is greater than the third deviation ratio threshold and lasts for more than the second preset duration; the second fault condition is that the deviation ratio of the actual current value corresponding to the operating frequency of any target compressor among the two compressors under the target comparison parameter and the standard current value is greater than the fourth deviation ratio threshold.

[0066] Step 202c2, determine the target compressor as a warning compressor.

[0067] For example, when the deviation ratio of the current values of the two compressors exceeds 10% (i.e., the third deviation ratio threshold), and lasts for more than 30 minutes (i.e., the above-mentioned second preset duration), and at the same time, the deviation ratio of the actual current value corresponding to the operating frequency of any compressor under the target comparison parameter and the standard current value is greater than 10% (i.e., the above-mentioned fourth deviation ratio threshold), it is determined that the preset fault conditions are met.

[0068] It should be noted that in the embodiments of the present application, the third ratio threshold is greater than the first ratio threshold, and the fourth ratio threshold is greater than the second ratio threshold.

[0069] Step 203, when it is detected that any one of the two compressors fails, perform a fault handling operation and send a fault warning prompt message to the server.

[0070] Exemplarily, after detecting a warning compressor, to ensure the stability of the air conditioning system and reduce the compressor frequency of the warning compressor, when the two compressors are operating, the frequency of the warning compressor is controlled according to the current of the problem-free compressor; when the indoor unit is operating at a low load, only one compressor needs to be turned on to meet the demand. The rotation operation of the single compressor is changed to the separate operation of only the non-warning compressor, delaying the life of the warning compressor and reducing the risk of compressor damage.

[0071] The dual-compressor fault warning method provided by the embodiment of the present application first monitors the operating frequencies of the two compressors to determine whether the preset detection trigger conditions are met; then, when the operating frequencies of the two compressors meet the preset detection trigger conditions, a preset fault detection method is used to perform fault detection on the two compressors; finally, when a fault occurs in any one of the two compressors, a fault handling operation is performed, and a fault warning prompt message is sent to the server. Among them, the preset fault detection method is based on the following conditions for fault judgment: the deviation ratio of the current values of the two compressors, and the deviation ratio of the actual current value corresponding to the operating frequency of each compressor among the two compressors under the target comparison parameter to the standard current value; the target comparison parameter includes at least one of the following: ambient working condition, suction pressure, and discharge pressure. In this way, fault warning can be carried out in advance before a certain compressor fails, and after-sales personnel can be notified to prepare spare parts for repair in time, avoiding a greater impact on the normal use of users.

[0072] It should be noted that for the dual-compressor fault warning method provided by the embodiment of the present application, the execution subject can be a dual-compressor fault warning device, or a control module in the dual-compressor fault warning device for executing the dual-compressor fault warning method. In the embodiment of the present application, the dual-compressor fault warning device executing the dual-compressor fault warning method is taken as an example to illustrate the dual-compressor fault warning device provided by the embodiment of the present application.

[0073] It should be noted that in the embodiment of the present application, the dual-compressor fault warning methods shown in the above-mentioned various method drawings are all exemplified by combining one drawing in the embodiment of the present application. Specifically, when implemented, the dual-compressor fault warning methods shown in the above-mentioned various method drawings can also be implemented in combination with any other combinable drawings shown in the above embodiments, which will not be elaborated here.

[0074] The dual-compressor fault warning device provided by the present application will be described below, and the description below can be mutually referred to with the dual-compressor fault warning method described above.

[0075] Figure 3 For the structural schematic diagram of the dual-compressor fault warning device provided by an embodiment of the present application, as Figure 3 shown, it specifically includes: A judgment module 301 is configured to monitor the operating frequencies of the two compressors and determine whether a preset detection trigger condition is met; a detection module 302 is configured to, when the operating frequencies of the two compressors meet the preset detection trigger condition, perform a fault detection on the two compressors using a preset fault detection method; an execution module 303 is configured to, when a fault occurs in any one of the two compressors, perform a fault handling operation and send a fault warning prompt message to a server; wherein, the preset fault detection method is based on the following conditions for fault judgment: the deviation ratio of the current values of the two compressors, and the deviation ratio of the actual current value corresponding to the operating frequency of each compressor in the two compressors under a target comparison parameter to the standard current value; the target comparison parameter includes at least one of the following: ambient working condition, suction pressure, and discharge pressure.

[0076] Optionally, the preset detection trigger condition includes: a first trigger condition; the judgment module 301 is specifically configured to, when the air conditioner is powered on and the two compressors continuously operate for a first preset duration, if the deviation ratio of the current values of the two compressors is greater than or equal to a first deviation ratio threshold, and / or the deviation ratio of the actual current value corresponding to the operating frequency of any one of the two compressors under the target comparison parameter to the standard current value is greater than a second deviation ratio threshold, then it is determined that the first trigger condition is met.

[0077] Optionally, the preset detection trigger condition further includes: a second trigger condition; the judgment module 301 is specifically configured to, when the two compressors continuously operate at the same operating frequency for a second preset duration and the operating frequency of any one of the two compressors is greater than or equal to a preset ratio threshold of the maximum operating frequency, determine that the second trigger condition is met; the judgment module 301 is further specifically configured to, when both the first trigger condition and the second trigger condition are met, determine that the operating frequencies of the two compressors meet the preset detection trigger condition.

[0078] Optionally, the detection module 302 is specifically configured to calculate the number of times the two compressors meet the preset fault condition within a target detection period; the detection module 302 is further specifically configured to, when the number of times the two compressors meet the preset fault condition is greater than or equal to a first preset number threshold, determine that a warning compressor is detected.

[0079] Optionally, the detection module 302 is specifically configured to, when the number of times that the two compressors meet the preset fault conditions is less than the first preset number threshold, extend the target detection period, and calculate the number of times that the two compressors meet the preset fault conditions within the extended target detection period until a preset termination condition is met; wherein, the preset termination condition includes any one of the following: the number of times of extending the target detection period reaches the second preset number threshold and the number of times that the two compressors meet the preset fault conditions is less than the first preset number threshold, the number of times that the two compressors meet the preset fault conditions is greater than or equal to the first preset number threshold.

[0080] Optionally, the detection module 302 is specifically configured to, when the number of times of extending the target detection period reaches the second preset number threshold and the number of times that the two compressors meet the preset fault conditions is less than the first preset number threshold, determine that neither of the two compressors has a fault.

[0081] Optionally, the detection module 302 is specifically configured to, when the first fault condition and the second fault condition are met, determine that the two compressors meet the preset fault conditions; the first fault condition is that the deviation ratio of the current values of the two compressors is greater than the third deviation ratio threshold and lasts for more than the second preset duration; the second fault condition is that the deviation ratio of the actual current value corresponding to the operating frequency of any target compressor among the two compressors under the target comparison parameter to the standard current value is greater than the fourth deviation ratio threshold; the detection module 302 is specifically further configured to determine the target compressor as a warning compressor.

[0082] The dual-compressor fault warning device provided by this application first monitors the operating frequencies of the two compressors to determine whether a preset detection trigger condition is met; then, when the operating frequencies of the two compressors meet the preset detection trigger condition, a preset fault detection method is used to perform fault detection on the two compressors; finally, when it is detected that any one of the two compressors has a fault, a fault handling operation is performed and a fault warning prompt message is sent to the server; wherein, the preset fault detection method makes a fault judgment based on the following conditions: the deviation ratio of the current values of the two compressors, the deviation ratio of the actual current value corresponding to the operating frequency of each compressor among the two compressors under the target comparison parameter to the standard current value; the target comparison parameter includes at least one of the following: ambient working condition, suction pressure, discharge pressure. In this way, fault warning can be carried out in advance before a certain compressor has a fault, and after-sales personnel can be notified to prepare spare parts for repair in time, avoiding a great impact on the normal use of users.

[0083] Figure 4Illustrates a schematic diagram of the physical structure of an electronic device, which can be the above-mentioned air conditioner, such as Figure 4 As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430, and a communication bus 440. Among them, the processor 410, the communication interface 420, and the memory 430 complete communication with each other through the communication bus 440. The processor 410 can call the logical instructions in the memory 430 to execute the dual-compressor fault warning method, which includes: monitoring the operating frequencies of the two compressors to determine whether a preset detection trigger condition is met; when the operating frequencies of the two compressors meet the preset detection trigger condition, using a preset fault detection method to perform fault detection on the two compressors; when a fault occurs in any one of the two compressors, performing a fault handling operation and sending a fault warning prompt message to the server; where the preset fault detection method makes a fault judgment based on the following conditions: the deviation ratio of the current values of the two compressors, and the deviation ratio of the actual current value corresponding to the operating frequency of each compressor among the two compressors under the target comparison parameter to the standard current value; the target comparison parameter includes at least one of the following: ambient working condition, suction pressure, and discharge pressure.

[0084] In addition, when the logical instructions in the above-mentioned memory 430 are implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0085] On the other hand, the present application also provides a computer program product. The computer program product includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the dual-compressor fault warning method provided by the above-mentioned various methods. The method includes: monitoring the operating frequencies of the two compressors to determine whether a preset detection trigger condition is satisfied; when the operating frequencies of the two compressors satisfy the preset detection trigger condition, performing a fault detection on the two compressors using a preset fault detection method; when a fault occurs in any one of the two compressors, performing a fault handling operation and sending a fault warning prompt message to the server; wherein, the preset fault detection method performs a fault determination based on the following conditions: the deviation ratio of the current values of the two compressors, and the deviation ratio of the actual current value corresponding to the operating frequency of each compressor among the two compressors under a target comparison parameter to the standard current value; the target comparison parameter includes at least one of the following: environmental conditions, suction pressure, and discharge pressure.

[0086] On another aspect, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is configured to execute the dual-compressor fault warning method provided by the above-mentioned various methods. The method includes: monitoring the operating frequencies of the two compressors to determine whether a preset detection trigger condition is satisfied; when the operating frequencies of the two compressors satisfy the preset detection trigger condition, performing a fault detection on the two compressors using a preset fault detection method; when a fault occurs in any one of the two compressors, performing a fault handling operation and sending a fault warning prompt message to the server; wherein, the preset fault detection method performs a fault determination based on the following conditions: the deviation ratio of the current values of the two compressors, and the deviation ratio of the actual current value corresponding to the operating frequency of each compressor among the two compressors under a target comparison parameter to the standard current value; the target comparison parameter includes at least one of the following: environmental conditions, suction pressure, and discharge pressure.

[0087] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative labor.

[0088] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the essence of the above technical solution, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for early warning of dual compressor faults, characterized in that, Applied to an air conditioner including two compressors, the method includes: Monitoring the operating frequencies of the two compressors to determine whether a preset detection trigger condition is met; When the operating frequencies of the two compressors meet the preset detection trigger condition, performing a fault detection on the two compressors using a preset fault detection method; When a fault occurs in any one of the two compressors, performing a fault handling operation and sending a fault warning prompt message to the server; Wherein, the preset fault detection method makes a fault determination based on the following conditions: the deviation ratio of the current values of the two compressors, and the deviation ratio of the actual current value corresponding to the operating frequency of each compressor among the two compressors under the target comparison parameter to the standard current value; the target comparison parameter includes at least one of the following: ambient working condition, suction pressure, discharge pressure.

2. The method according to claim 1, characterized in that The preset detection trigger condition includes: a first trigger condition; The monitoring of the operating frequencies of the two compressors to determine whether a preset detection trigger condition is met includes: When the air conditioner is powered on and the two compressors continuously operate for a first preset duration, if the deviation ratio of the current values of the two compressors is greater than or equal to a first deviation ratio threshold, and / or, the deviation ratio of the actual current value corresponding to the operating frequency of any one of the two compressors under the target comparison parameter to the standard current value is greater than a second deviation ratio threshold, it is determined that the first trigger condition is met.

3. The method according to claim 2, characterized in that, The preset detection trigger condition further includes: a second trigger condition; The monitoring of the operating frequencies of the two compressors to determine whether a preset detection trigger condition is met includes: When the two compressors continuously operate at the same operating frequency for a second preset duration and the operating frequency of any one of the two compressors is greater than or equal to a preset ratio threshold of the maximum operating frequency, it is determined that the second trigger condition is met; When both the first trigger condition and the second trigger condition are met, it is determined that the operating frequencies of the two compressors meet the preset detection trigger condition.

4. The method according to claim 1, characterized in that, The performing a fault detection on the two compressors using a preset fault detection method includes: Calculating the number of times the two compressors meet the preset fault condition within a target detection period; When the number of times the two compressors meet the preset fault condition is greater than or equal to a first preset number threshold, it is determined that a warning compressor is detected.

5. The method according to claim 4, wherein The performing a fault detection on the two compressors using a preset fault detection method includes: When the number of times the two compressors meet the preset fault condition is less than the first preset number threshold, extending the target detection period and calculating the number of times the two compressors meet the preset fault condition within the extended target detection period until a preset termination condition is met. Wherein, the preset termination condition includes any one of the following: the number of times of extending the target detection period reaches a second preset number threshold, and the number of times that the two compressors meet the preset fault condition is less than the first preset number threshold; the number of times that the two compressors meet the preset fault condition is greater than or equal to the first preset number threshold.

6. The method according to claim 5, characterized in that, Based on the extended target detection period, calculate the number of times that the two compressors meet the preset fault condition within the target detection period. After meeting the preset termination condition, the method further includes: When the number of times of extending the target detection period reaches the second preset number threshold and the number of times that the two compressors meet the preset fault condition is less than the first preset number threshold, determine that the two compressors have no faults.

7. The method according to any one of claims 4 to 6, characterized in that The step of judging whether the two compressors meet the preset fault condition includes: When the first fault condition and the second fault condition are met, determine that the two compressors meet the preset fault condition; the first fault condition is that the deviation ratio of the current values of the two compressors is greater than a third deviation ratio threshold and lasts for more than a second preset duration; the second fault condition is that the deviation ratio of the actual current value corresponding to the operating frequency of any target compressor among the two compressors under the target comparison parameter and the standard current value is greater than a fourth deviation ratio threshold. Determine the target compressor as a warning compressor.

8. A dual-compressor fault warning device, characterized in that, The device includes: A judgment module, configured to monitor the operating frequencies of the two compressors and judge whether a preset detection trigger condition is met; A detection module, configured to perform a fault detection on the two compressors using a preset fault detection method when the operating frequencies of the two compressors meet the preset detection trigger condition; An execution module, configured to perform a fault handling operation and send a fault warning prompt message to the server when a fault occurs in any one of the two compressors is detected; Wherein, the preset fault detection method makes a fault judgment based on the following conditions: the deviation ratio of the current values of the two compressors, the deviation ratio of the actual current value corresponding to the operating frequency of each compressor among the two compressors under the target comparison parameter and the standard current value; the target comparison parameter includes at least one of the following: ambient working condition, suction pressure, discharge pressure.

9. An air conditioner, characterized in that, It includes two compressors, a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements the steps of the dual-compressor fault warning method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, A computer program is stored thereon. When the computer program is executed by the processor, it implements the steps of the dual-compressor fault warning method according to any one of claims 1 to 7.

Images