Fan protection method and device, air conditioner and computer storage medium

Abstract

The invention relates to a fan protection method and device, an air conditioner and a computer storage medium, and the method comprises the steps that in response to a matching starting instruction, a current-limiting current value matched with a fan is determined; in response to the matching ending instruction, setting a current limiting point in a preset overcurrent protection process as a current limiting value matched with the fan; wherein the overcurrent protection process is used for controlling the fan to act, so that the working current value of the fan is smaller than the current-limiting current value specified by the current-limiting point; the working current value of the fan is detected in real time, and whether the working current value of the fan is larger than or equal to the current-limiting current value specified by the current-limiting point or not is judged; and under the condition that the working current value of the fan is greater than or equal to the current-limiting current value specified by the current-limiting point, triggering an overcurrent protection process. Through the technical scheme provided by the invention, the current-limiting current value matched with the fan can be determined for different fans, and the universality of fan overcurrent protection can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to a fan protection method, device, air conditioner and computer storage medium. Background Art

[0002] Fans of different powers have different rated currents, and the operating current of the fan cannot exceed the rated current of the fan, otherwise the fan will be damaged. Therefore, air conditioners using fans must be equipped with an overcurrent protection function, that is, when the operating current of the fan reaches a certain current value that does not exceed the rated current of the fan, the air conditioner will protect the fan from overcurrent by controlling the fan to stop working or reduce the speed.

[0003] At present, the commonly used overcurrent protection scheme is to use a current limiting resistor to set a fixed current limiting point on the hardware of the air conditioner. However, considering a possible actual situation, since the rated currents of fans of different models are different, if a fixed current limiting point is set on the hardware of the air conditioner through a current limiting resistor, when the fan of the air conditioner is repaired or replaced, the rated current of the newly installed fan may conflict with the fixed current limiting point, resulting in the air conditioner being unable to provide good overcurrent protection for the newly installed fan.

[0004] In summary, the solutions for overcurrent protection of fans in the prior art have poor versatility. Summary of the invention

[0005] The present application provides a fan protection method, device, air conditioner and computer storage medium to solve the technical problem of poor versatility of the solutions for overcurrent protection of fans in the prior art.

[0006] In a first aspect, the present application provides a method for protecting a wind turbine, the method comprising:

[0007] In response to a start matching instruction, determining a current limiting current value matching the wind turbine;

[0008] In response to the end matching instruction, the current limiting point in the preset overcurrent protection process is set to a current limiting current value that matches the fan; wherein the overcurrent protection process is used to control the action of the fan so that the operating current value of the fan is less than the current limiting current value specified by the current limiting point;

[0009] Detecting the working current value of the fan in real time, and determining whether the working current value of the fan is greater than or equal to the current limiting current value specified by the current limiting point;

[0010] When the operating current value of the wind turbine is greater than or equal to the current limiting current value specified by the current limiting point, the overcurrent protection process is triggered.

[0011] In a feasible embodiment of the present application, in response to a start matching instruction, determining a current limiting current value matching the wind turbine includes:

[0012] In response to the start matching instruction, a constant test drive current is output to the fan; wherein the test drive current is used to drive the fan to perform a test operation;

[0013] During the test operation of the fan, obtaining the test operation speed of the fan;

[0014] The current limiting current value matching the fan is determined according to the test running speed.

[0015] In a feasible embodiment of the present application, determining the current limiting current value matching the fan according to the test operation speed includes:

[0016] Determine the rated current value corresponding to the test running speed in a preset speed-current mapping table according to the test running speed; wherein the speed-current mapping table is determined by calibrating the speed of the fan and the rated current value under the test current value;

[0017] The difference between the rated current value and the preset protection current value is determined as the current limiting current value matching the wind turbine.

[0018] In a feasible embodiment of the present application, before outputting a test drive current to the fan in response to the start matching instruction, the method further includes:

[0019] In response to the start matching instruction, the air conditioner loads other than the fan are controlled to stop operating.

[0020] In a feasible embodiment of the present application, during the process of the fan performing the test operation, obtaining the test operation speed of the fan includes:

[0021] After the fan performs the test operation for a preset time, the test operation rotation speed of the fan is obtained.

[0022] In a feasible embodiment of the present application, in response to the start matching instruction, outputting a constant test drive current to the fan, the method further includes:

[0023] A real-time driving current value of the test driving current is acquired, and feedback adjustment is performed on the test driving current according to the real-time driving current value, so that the test driving current remains constant.

[0024] In a feasible embodiment of the present application, after responding to the end matching instruction and setting the current limiting point in the preset overcurrent protection process to a current limiting current value matching the wind turbine, the method further includes:

[0025] Obtaining identification information of the wind turbine;

[0026] The identity information and the current limiting value of the wind turbine corresponding to the identity information are associated and stored.

[0027] In a second aspect, the present application provides a wind turbine protection device, the device comprising:

[0028] A determination module, configured to determine a current limiting value matched with the wind turbine in response to a start matching instruction;

[0029] A setting module, configured to set the current limiting point in the preset overcurrent protection process to a current limiting current value matching the fan in response to an end matching instruction; wherein the overcurrent protection process is configured to control the fan action so that the operating current value of the fan is less than the current limiting current value specified by the current limiting point;

[0030] A judgment module, used for detecting the working current value of the fan in real time, and judging whether the working current value of the fan is greater than or equal to the current limiting current value specified by the current limiting point;

[0031] A trigger module is used to trigger the overcurrent protection process when the working current value of the fan is greater than or equal to the current limiting current value specified by the current limiting point.

[0032] In a third aspect, the present application provides an air conditioner, which includes at least a controller and a fan, wherein the controller is connected to the fan, and the controller is used to execute the fan protection method as described in any one of the embodiments in the first aspect above.

[0033] In a fourth aspect, the present application further provides a computer storage medium storing computer executable instructions, wherein the computer executable instructions are used to execute the wind turbine protection method as described in any one of the embodiments in the first aspect above.

[0034] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0035] The method provided by the embodiment of the present application, in response to the start matching instruction, determines the current limiting current value matched with the fan; in response to the end matching instruction, sets the current limiting point in the preset overcurrent protection process to the current limiting current value matched with the fan; wherein, the overcurrent protection process is used to control the fan action so that the working current value of the fan is less than the current limiting current value specified by the current limiting point; detects the working current value of the fan in real time, and determines whether the working current value of the fan is greater than or equal to the current limiting current value specified by the current limiting point; triggers the overcurrent protection process when the working current value of the fan is greater than or equal to the current limiting current value specified by the current limiting point. It can be seen that in the technical solution provided by the present application, the fan needs to match the current limiting current value before triggering the overcurrent protection process. For different types of fans, the current limiting current value suitable for the fan can be determined through the technical solution provided by the present application; the current limiting point in the overcurrent protection process is set to the current limiting current value matched with the fan, ensuring that the current limiting current value actually matched with the fan can be used for overcurrent protection, effectively improving the versatility of the fan protection method. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0038] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0039] Figure 1 A schematic diagram of a flow chart of a wind turbine protection method provided in an embodiment of the present application;

[0040] Figure 2 A detailed flow chart of a wind turbine protection method provided in an embodiment of the present application during specific implementation;

[0041] Figure 3 A schematic diagram of the structure of a wind turbine protection system provided in an embodiment of the present application;

[0042] Figure 4 A schematic structural diagram of a wind turbine protection device provided in an embodiment of the present application;

[0043] Figure 5 A schematic diagram of the structure of an air conditioner provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0045] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0046] In order to solve the technical problem that the solutions for overcurrent protection of fans in the prior art have poor versatility, the present application provides a fan protection method, device, air conditioner and computer storage medium, which can effectively improve the versatility of fan overcurrent protection.

[0047] Figure 1 A flow chart of a wind turbine protection method provided in an embodiment of the present application is shown in FIG. Figure 1 In a wind turbine protection method provided in an embodiment of the present application, the following steps are specifically included:

[0048] S1: In response to a start matching instruction, determine a current limiting value matching the fan;

[0049] S2: In response to the end matching instruction, the current limiting point in the preset overcurrent protection process is set to a current limiting current value that matches the fan; wherein the overcurrent protection process is used to control the fan action so that the working current value of the fan is less than the current limiting current value specified by the current limiting point;

[0050] S3: Real-time detection of the working current value of the fan, and determination of whether the working current value of the fan is greater than or equal to the current limiting value specified by the current limiting point;

[0051] S4: When the working current value of the fan is greater than or equal to the current limiting current value specified by the current limiting point, the overcurrent protection process is triggered;

[0052] A fan protection method provided in an embodiment of the present application can be applied to an air conditioner, and can be specifically implemented on a controller of the air conditioner. In the air conditioner, an overcurrent protection process acting on the fan is pre-set, and when a specific condition is reached, the controller triggers the overcurrent protection process to implement overcurrent protection for the fan. In order to make a fan protection method provided in an embodiment of the present application adaptable to different fans connected to the air conditioner, it is necessary to first set the current limiting point in the overcurrent protection process.

[0053] Specifically, in S1, after the air conditioner is powered on and operates normally, the controller of the air conditioner receives a start matching instruction, and the air conditioner enters a fan matching mode. In the fan matching mode, the controller will first determine a current limiting current value that matches the fan.

[0054] In a feasible embodiment of the present application, the start matching instruction can be issued by the user through the external control device of the air conditioner. For example, the user can select the "fan matching" function button on the air conditioner remote control. When the user selects the "fan matching" function button, the air conditioner remote control sends a start matching instruction to the controller of the air conditioner.

[0055] In a feasible embodiment of the present application, the start matching instruction can also be generated based on the initial power-on operation of the fan. For example, when the air conditioner is repaired and the fan is replaced, when the air conditioner is powered on and the new fan is powered on for the first time, a start matching instruction is generated at this time.

[0056] In a feasible embodiment of the present application, in response to a start matching instruction, determining a current limiting current value matching the wind turbine includes:

[0057] In response to the start matching instruction, a constant test drive current is output to the fan; wherein the test drive current is used to drive the fan to perform a test operation;

[0058] During the test operation of the fan, the test operation speed of the fan is obtained;

[0059] Determine the current limiting value that matches the fan based on the test operating speed.

[0060] Specifically, after the controller receives the start matching instruction, it starts to output a constant test drive current to the fan, and the fan is tested under the drive of the test drive current. In some actual application scenarios, the test drive current can be generated by a driver connected to the motor. The controller only needs to issue a corresponding instruction to the driver after receiving the start matching instruction to enable the driver to output the test drive current to the fan.

[0061] After the fan starts the test operation, the test operation speed of the fan is obtained, and the current limiting current value of the fan is determined based on the test operation speed. In some actual application scenarios, the test operation speed can be measured by a speed detector connected to the fan, and sent to the controller by the speed detector.

[0062] In a feasible embodiment of the present application, determining a current limiting current value matching the fan according to the test running speed includes:

[0063] Determine the rated current value corresponding to the test running speed in a preset speed-current mapping table according to the test running speed; wherein the speed-current mapping table is determined by calibrating the speed and the rated current value of the fan under the test current value;

[0064] The difference between the rated current value and the preset protection current value is determined as the current limiting current value matching the fan.

[0065] Specifically, the air conditioner is also provided with a memory connected to the controller, which stores a speed-current mapping table. The speed-current mapping table records the mapping relationship between the test running speed and the rated current value. One test running speed corresponds to only one rated current value.

[0066] After the controller obtains the test running speed of the fan during test operation, it calls the preset speed-current mapping table from the memory, searches the speed-current mapping table by the test running speed, and determines the rated current value corresponding to the test running speed. The rated current value is the rated current value of the fan currently running.

[0067] It is understandable that the working current of the fan should not exceed the rated current value of the fan when it is working. In a feasible embodiment of the present application, the rated current value of the fan can be directly set to the current limiting current value. However, in order to improve fault tolerance, we cannot perform overcurrent protection on the fan only when the working current value of the fan just reaches the rated current value. Therefore, in a preferred embodiment of the present application, a protection current value is set, and the difference between the rated current value and the preset protection current value is determined as the current limiting current value matching the fan.

[0068] It should be noted that the speed-current mapping table is obtained by technicians in laboratory testing and calibration. In the laboratory, technicians give the same drive current to fans of different models, determine the operating speeds of fans of different models under the same drive current, and determine the rated currents of fans of different models. A corresponding relationship between the rated current and the operating speed is established to complete the calibration of the speed-current mapping table. It can be understood that the test drive current provided for the fan in the above embodiment should be completely consistent with the given starting current when calibrated by the technicians in the laboratory.

[0069] It can be understood that different models of fans have different operating speeds under the same driving current. After the driving current is determined, a corresponding relationship between the operating speed and the fan model can be established. Since under laboratory conditions, the fan model is known, that is, the rated current of the fan is known, a corresponding relationship between the operating speed and the fan model can be established after the driving current is determined.

[0070] Since the output power of the switching power supply of the air conditioner mainboard is fixed, if other air conditioner loads of the air conditioner are turned on when determining the current limiting current value of the fan, it may cause the problem of excessive output pressure of the switching power supply, resulting in instability of the output test drive current, and further resulting in inaccurate determined current limiting current value. Therefore, in a feasible embodiment of the present application, before responding to the start matching instruction and outputting a constant test drive current to the fan, it also includes: responding to the start matching instruction, controlling the air conditioner loads other than the fan to stop running.

[0071] Through the technical solution provided by the above embodiment, the output pressure of the switching power supply is reduced, and the stable and constant output of the test drive current is ensured, thereby ensuring the accuracy of the determined current limiting current value.

[0072] Since the fan is not running before receiving the start matching instruction, the running state of the fan is not stable at the beginning of the test run. In order to ensure the accuracy of the current limiting current value determined to match the fan, it is necessary to ensure that the speed of the fan can be obtained after the stable test run. Therefore, in a feasible embodiment of the present application, during the test run of the fan, obtaining the test run speed of the fan includes: obtaining the test run speed of the fan after the fan has been tested for a preset time.

[0073] Through the technical solution provided by the above embodiment, the fan is first tested for a preset time, so that the test operation of the fan is carried out stably, ensuring that the obtained test operation speed can accurately describe the test operation of the fan, thereby ensuring the accuracy of the determined current limiting current value.

[0074] In order to ensure that the test drive current can be output stably and constantly, in a feasible embodiment of the present application, in response to a start matching instruction, outputting a constant test drive current to the fan, the method also includes: obtaining a real-time drive current value of the test drive current, and performing feedback adjustment on the test drive current according to the real-time drive current value to keep the test drive current constant.

[0075] In the above embodiment, the real-time driving current value of the test driving current can be obtained by a current detector connected to the driver. After the current detector obtains the real-time driving current value of the test driving current, the test driving current is feedback-adjusted according to the real-time driving current value. The technical solution provided by the above embodiment ensures that the test driving current can be output stably and constantly.

[0076] In a feasible embodiment of the present application, after responding to the end matching instruction and setting the current limiting point in the preset overcurrent protection process to the current limiting current value matching the wind turbine, the method further includes:

[0077] Obtain the identification information of the wind turbine;

[0078] The identity information and the current limiting value of the wind turbine corresponding to the identity information are associated and stored.

[0079] Through the technical solution provided by the above embodiment, if the air conditioner is connected to the fan again next time, it can first be searched in the memory based on the identity information of the fan. If the current limiting current value of the fan corresponding to the identity information can be found, the current limiting current value can be directly determined as the current limiting resistance value of the current fan, and there is no need to execute the above-mentioned fan matching process, which is relatively simple.

[0080] Specifically, in S2, after the controller determines the current limiting value, the controller generates an end matching instruction, and in response to the end matching instruction, the air conditioner exits the fan matching mode. At this time, the controller sets the overcurrent protection process and sets the current limiting point in the preset overcurrent protection process to the current limiting value determined in S1.

[0081] In some actual application scenarios, the program of the overcurrent protection process may be stored in a memory, and the controller performs overcurrent protection on the fan based on the overcurrent protection process.

[0082] Specifically, in S3, after the controller completes the setting of the overcurrent protection process, the air conditioner runs normally, and the controller detects the working current value of the fan in real time to determine whether the working current value of the fan is greater than or equal to the current limiting current value specified by the current limiting point. In some actual application scenarios, the working current value of the fan can be obtained through a current detector connected to the fan, and the controller reads the current detector connected to the fan to obtain the working current value of the fan.

[0083] Specifically, in S4, when the controller performs real-time detection on the working current value of the fan, if it is detected that the working current value of the fan is greater than or equal to the current limiting current value specified by the current limiting point, the overcurrent protection process is triggered to keep the working current value of the fan below the current limiting current value. In a feasible embodiment of the present application, the overcurrent protection process can reduce the working current value of the fan by reducing the fan speed or controlling the fan to stop running.

[0084] In the technical solution provided in the present application, the fan needs to match the current limiting current value before triggering the overcurrent protection process. For different types of fans, the technical solution provided in the present application can determine the current limiting current value suitable for the fan; the current limiting point in the overcurrent protection process is set to the current limiting current value that matches the fan, ensuring that the current limiting current value that actually matches the fan can be used for overcurrent protection, effectively improving the versatility of the fan protection method.

[0085] Figure 2 A detailed flow chart of a wind turbine protection method provided in an embodiment of the present application during specific implementation, refer to Figure 2 In combination with the above embodiments, a wind turbine protection method provided in the embodiments of the present application may include the following steps in specific implementation:

[0086] S201: The user controls the air conditioner to turn on through the air conditioner remote control or other control devices, and the air conditioner operates normally;

[0087] S202: Determine in real time whether a start matching instruction from the user is received; if a start matching instruction from the user is received, proceed to S203; if no start matching instruction from the user is received, jump back to S201;

[0088] S203: The air conditioner enters a fan matching mode;

[0089] S204: The air conditioner turns off other air conditioner loads except the fan;

[0090] S205: outputting a constant driving test current to the fan to drive the fan to perform a test operation;

[0091] S206: timing, judging whether the fan has been tested for a preset time; if the fan has been running for the preset time, proceeding to S207; if the fan has not been running for the preset time, jumping back to S205;

[0092] S207: Obtaining a test running speed of the fan during a stable test running process;

[0093] S208: searching the rated current value corresponding to the test running speed in the speed-current mapping table, subtracting the rated current value from the protection current value to obtain the current limiting current value;

[0094] S209: setting the current limiting point in the overcurrent protection process to the current limiting current value;

[0095] S210: After the overcurrent protection process is set, an end matching instruction is generated, the fan matching mode is exited, and the air conditioner continues to operate normally;

[0096] S211: After completing the setting of the overcurrent protection process, the working current value of the fan is obtained in real time;

[0097] S212: Determine whether the working current value of the fan is greater than or equal to the current limiting current value set by the current limiting point; if the working current value is greater than or equal to the current limiting current value set by the current limiting point, proceed to S213; if the working current value is less than the current limiting current value set by the current limiting point, jump back to S211;

[0098] S213: triggering the overcurrent protection process to control the fan to reduce the speed or stop running, so that the working current of the fan remains less than the current limiting current value.

[0099] In another aspect, an embodiment of the present application further provides a fan protection system 1, and the fan protection system 1 is arranged in an air conditioner. Figure 3 A schematic diagram of a wind turbine protection system 1 provided in an embodiment of the present application, referring to Figure 3 A wind turbine protection system 1 provided in an embodiment of the present application may specifically include a controller 301 , a memory 302 , a driver 303 , a first current detector 304 , a second current detector 305 , and a speed detector 306 .

[0100] Specifically, the protection system 1 of the wind turbine is connected to the wind turbine 2 via the driver 303. In the protection system 1 of the wind turbine, the controller 301 is connected to the memory 302, the driver 303, the first current detector 304, the second current detector 305 and the speed detector 306 respectively.

[0101] The controller 301 is used to execute a fan protection method as described in any of the above method embodiments; the memory 302 is used to store a current-speed mapping table and to store a program for an overcurrent protection process; the driver 303 is controlled by the controller 301 and is used to output a test drive current to the fan 2; the second current detector 305 is connected to the driver 303, and is used to detect the real-time drive current value of the test drive current output by the driver 303, and send the real-time drive current value to the controller 301, so that the controller 301 can perform feedback adjustment on the test drive current to ensure that the test drive current is stable and constant; the first current detector 304 is connected to the fan 2, and is used to detect the working current value of the fan 2, and send the working current value to the controller 301; the speed detector 306 is connected to the fan 2, and is used to detect the test running speed of the fan 2, and send the test running speed to the controller 301.

[0102] Figure 4 A schematic diagram of a wind turbine protection device provided in an embodiment of the present application. Corresponding to the above method embodiment, the present application embodiment further provides a wind turbine protection device, which may specifically be the controller described in the above system embodiment. Figure 4 , the fan protection device specifically includes:

[0103] A determination module 401, configured to determine a current limiting value matched with the wind turbine in response to a start matching instruction;

[0104] A setting module 402, configured to set the current limiting point in the preset overcurrent protection process to a current limiting current value matching the fan in response to the end matching instruction; wherein the overcurrent protection process is configured to control the fan action so that the operating current value of the fan is less than the current limiting current value specified by the current limiting point;

[0105] A judgment module 403 is used to detect the working current value of the fan in real time, and judge whether the working current value of the fan is greater than or equal to the current limiting current value specified by the current limiting point;

[0106] The trigger module 404 is used to trigger the overcurrent protection process when the working current value of the wind turbine is greater than or equal to the current limiting current value specified by the current limiting point.

[0107] In a feasible embodiment of the present application, the setting module 402 includes:

[0108] An output unit, configured to output a constant test drive current to the fan in response to the start matching instruction; wherein the test drive current is used to drive the fan to perform a test operation;

[0109] An acquisition unit, used for acquiring a test operation speed of the fan during the test operation of the fan;

[0110] A determination unit is used to determine the current limiting current value matching the fan according to the test running speed.

[0111] In a feasible embodiment of the present application, the determining unit includes:

[0112] A first determination subunit is used to determine the rated current value corresponding to the test running speed in a preset speed-current mapping table according to the test running speed; wherein the speed-current mapping table is determined by calibrating the speed of the fan and the rated current value under the test current value;

[0113] The second determining subunit is used to determine the difference between the rated current value and the preset protection current value as the current limiting current value matching the wind turbine.

[0114] In a feasible embodiment of the present application, the setting module 402 further includes:

[0115] The control unit is used for controlling the air conditioner loads other than the fan to stop running in response to the start matching instruction.

[0116] In a feasible embodiment of the present application, the acquisition unit includes:

[0117] The acquisition subunit is used to acquire the test operation speed of the fan after the fan performs the test operation for a preset time.

[0118] In a feasible embodiment of the present application, the output unit includes:

[0119] The feedback subunit is used to obtain the real-time driving current value of the test driving current, and perform feedback adjustment on the test driving current according to the real-time driving current value to keep the test driving current constant.

[0120] In a feasible embodiment of the present application, the device further includes:

[0121] An acquisition module, used to acquire the identity information of the wind turbine;

[0122] A storage module is used to associate and store the identity information and the current limiting value of the wind turbine corresponding to the identity information.

[0123] Figure 5 A schematic diagram of the structure of an air conditioner provided in an embodiment of the present application, referring to Figure 5In another aspect, an embodiment of the present application further provides an air conditioner, which at least includes a fan protection system 1 and a fan 2 as described in the above system embodiment, and the fan protection system 1 is connected to the fan 2, and the fan protection system 1 is used to execute a fan protection method as described in any one of the above method embodiments.

[0124] An embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of a wind turbine protection method provided in any of the aforementioned method embodiments are implemented.

[0125] The device embodiments described above are merely illustrative, wherein 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 on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0126] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a general hardware platform, and of course, by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for 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.

[0127] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0128] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A method for protecting a fan, characterized in that: The method comprises: In response to a start matching instruction, determining a current limiting current value matching the wind turbine; In response to the end matching instruction, the current limiting point in the preset overcurrent protection process is set to a current limiting current value that matches the fan; wherein the overcurrent protection process is used to control the action of the fan so that the operating current value of the fan is less than the current limiting current value specified by the current limiting point; Detecting the working current value of the fan in real time, and determining whether the working current value of the fan is greater than or equal to the current limiting current value specified by the current limiting point; When the operating current value of the wind turbine is greater than or equal to the current limiting current value specified by the current limiting point, the overcurrent protection process is triggered.

2. The method according to claim 1, characterized in that In response to the start matching instruction, determining a current limiting current value matching the wind turbine includes: In response to the start matching instruction, a constant test drive current is output to the fan; wherein the test drive current is used to drive the fan to perform a test operation; During the test operation of the fan, obtaining the test operation speed of the fan; The current limiting current value matching the fan is determined according to the test running speed.

3. The method according to claim 2, characterized in that Determining the current limiting value matching the fan according to the test running speed includes: Determine the rated current value corresponding to the test running speed in a preset speed-current mapping table according to the test running speed; wherein the speed-current mapping table is determined by calibrating the speed of the fan and the rated current value under the test current value; The difference between the rated current value and the preset protection current value is determined as the current limiting current value matching the wind turbine.

4. The method according to claim 2, characterized in that: Before outputting a constant test drive current to the fan in response to the start matching instruction, the method further includes: In response to the start matching instruction, the air conditioner loads other than the fan are controlled to stop operating.

5. The method according to claim 2, characterized in that: During the test operation of the fan, obtaining the test operation speed of the fan includes: After the fan performs the test operation for a preset time, the test operation rotation speed of the fan is obtained.

6. The method according to claim 1, characterized in that In the step of outputting a constant test drive current to the fan in response to the start matching instruction, the method further comprises: A real-time driving current value of the test driving current is acquired, and feedback adjustment is performed on the test driving current according to the real-time driving current value, so that the test driving current remains constant.

7. The method according to claim 1, characterized in that After the current limiting point in the preset overcurrent protection process is set to a current limiting current value matching the wind turbine in response to the end matching instruction, the method further includes: Obtaining identification information of the wind turbine; The identity information and the current limiting value of the wind turbine corresponding to the identity information are associated and stored.

8. A fan protection device, characterized in that: The device comprises: A determination module, configured to determine a current limiting value matched with the wind turbine in response to a start matching instruction; A setting module, configured to set the current limiting point in the preset overcurrent protection process to a current limiting current value matching the fan in response to an end matching instruction; wherein the overcurrent protection process is configured to control the fan action so that the operating current value of the fan is less than the current limiting current value specified by the current limiting point; A judgment module, used for detecting the working current value of the fan in real time, and judging whether the working current value of the fan is greater than or equal to the current limiting current value specified by the current limiting point; A trigger module is used to trigger the overcurrent protection process when the working current value of the fan is greater than or equal to the current limiting current value specified by the current limiting point.

9. An air conditioner, characterized in that: The air conditioner at least includes a controller and a fan, the controller is connected to the fan, and the controller is used to execute the fan protection method as described in any one of claims 1-7.

10. A computer storage medium, characterized in that: Computer executable instructions are stored, and the computer executable instructions are used to execute the wind turbine protection method as described in any one of claims 1-7.

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