Fan rotating speed control method, controller, storage medium and air conditioner

Abstract

The invention relates to the technical field of air conditioner equipment control, particularly provides a fan rotating speed control method, a controller, a storage medium and an air conditioner, and aims to solve the problem that the air volume of an air outlet of the air conditioner can be influenced by the static pressure of an air duct of the air conditioner. In order to achieve the purpose, the method comprises the steps that actual operation parameters of a motor of the air conditioner are obtained, the fan rotating speed corresponding to the actual operation parameters of the motor is determined based on a preset fitting relation, and the air conditioner is controlled to operate according to the fan rotating speed so that the air volume of an air outlet of the air conditioner can be the preset air volume. In this way, the fan rotating speed of the air conditioner can be directly obtained through the pre-obtained fitting relation, so that the influence of the air duct static pressure of the air conditioner on the air volume of the air outlet of the air conditioner is weakened through the fan rotating speed, and the air conditioner reaches the preset air volume. Automatic adjustment of the rotating speed of the air conditioner fan is achieved, the air volume of the air outlet of the air conditioner is readjusted, and the use requirements of users are met.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioner control, and particularly relates to a method for controlling the fan speed, a controller, a storage medium, and an air conditioner. Background Art

[0002] During the operation of an air conditioner, when the fan speed of the air conditioner is constant, the static pressure of the air conditioner has a significant impact on the air volume of the air outlet of the air conditioner. That is to say, due to the static pressure borne by the air conditioner, the air volume of the air outlet of the air conditioner may vary under the same fan speed, affecting the user experience.

[0003] This is mainly because most current air conditioners still need to be connected to air ducts to guide the air outlet of the indoor unit of the air conditioner to different positions in the room through the air ducts. When the air in the air conditioner flows through the air duct, the irregular movement of air molecules hitting the duct wall will generate pressure, resulting in the generation of static pressure in the air conditioner. The static pressure in the air conditioner is different when the length or number of the air ducts connected to the air conditioner is different.

[0004] However, since the actual lengths of the air ducts connected to the air conditioner are different in different application scenarios, the length and number of the air ducts connected to the air conditioner cannot be determined before installing the air conditioner, so the static pressure of the air duct of the air conditioner cannot be determined either. Furthermore, it is impossible to adjust the air volume of the air outlet of the air conditioner according to the magnitude of the static pressure. The prior art usually sets multiple fixed fan speed gears on the air conditioner to facilitate users to manually adjust the air volume of the air conditioner to make up for the attenuation of the air volume of the air outlet of the air conditioner caused by the static pressure of the air conditioner. However, this method requires multiple operations by the user, which is rather troublesome and the user experience is poor.

[0005] Correspondingly, a new solution is needed in this field to solve the above problems. Summary of the Invention

[0006] In order to overcome the above defects, the present application is proposed to solve or at least partially solve the technical problem that the static pressure of the air duct of the air conditioner affects the air volume of the air outlet of the air conditioner.

[0007] In a first aspect, a method for controlling the fan speed is provided, and the method includes:

[0008] Obtain the actual operating parameters of the motor of the air conditioner;

[0009] Based on a preset fitting relationship, determine the fan speed corresponding to the actual operating parameters of the motor; wherein, the fitting relationship is the relationship between the actual operating parameters of the motor and the fan speed obtained when the air conditioner ensures that the air volume of the air outlet is a preset air volume under different air duct static pressure conditions;

[0010] Control the operation of the air conditioner according to the fan speed so that the air volume of the air outlet of the air conditioner is the preset air volume.

[0011] In one technical solution of the above-mentioned fan speed control method,

[0012] The method further includes obtaining the fitting relationship according to the following steps:

[0013] On the premise of a preset air volume, for different air duct static pressure conditions, collect the corresponding data of the actual operating parameters of the motor of the air conditioner and the fan speed;

[0014] According to the data sampling results, perform a correlation analysis to determine the correlation coefficient between the actual operating parameters of the motor and the fan speed, and the correlation coefficient is a coefficient representing the degree of linear correlation between the actual operating parameters of the motor and the fan speed;

[0015] Determine the fitting relationship according to the correlation coefficient.

[0016] In one technical solution of the above-mentioned fan speed control method,

[0017] The preset air volume includes at least one air volume of the air conditioner;

[0018] On the premise of the preset air volume, for different air duct static pressure conditions, collecting the corresponding data of the actual operating parameters of the motor of the air conditioner and the fan speed includes:

[0019] For each air volume of the air conditioner, adjust the air duct static pressure condition to obtain different air conditioner static pressure values;

[0020] Collect the corresponding data of the actual operating parameters of the motor and the fan speed corresponding to each air conditioner static pressure value.

[0021] In one technical solution of the above-mentioned fan speed control method,

[0022] The actual operating parameters of the motor include the actual operating current of the motor of the air conditioner and / or the actual power consumed by the motor of the air conditioner;

[0023] Obtaining the actual operating parameters of the motor of the air conditioner includes:

[0024] Obtain the real-time current value of the actual operating current of the motor of the air conditioner; and / or,

[0025] Obtain the real-time power value of the actual power consumed by the motor of the air conditioner.

[0026] In one technical solution of the above-mentioned fan speed control method,

[0027] The fitting relationship includes a first fitting relationship and a second fitting relationship. The first fitting relationship is the fitting relationship between the actual operating current of the motor and the fan speed, and the second fitting relationship is the fitting relationship between the actual power consumption of the motor and the fan speed;

[0028] Based on the preset fitting relationship, determining the fan speed corresponding to the actual operating parameters of the motor includes:

[0029] Detecting whether the power supply voltage of the air conditioner exceeds a preset voltage range;

[0030] If not, based on the first fitting relationship, determining the fan speed corresponding to the real-time current value;

[0031] If so, based on the second fitting relationship, determining the fan speed corresponding to the real-time power value.

[0032] In a technical solution of the above fan speed control method,

[0033] After controlling the operation of the air conditioner according to the fan speed, it includes:

[0034] Every preset time interval, obtaining the difference between the actual operating parameters of the motor in the current detection period and the actual operating parameters of the motor in the previous detection period;

[0035] According to the difference and the fitting relationship, determining the fan speed in the current detection period;

[0036] Controlling the operation of the air conditioner according to the fan speed in the current detection period so that the air volume at the air outlet of the air conditioner is a preset air volume.

[0037] In a technical solution of the above fan speed control method,

[0038] According to the difference and the fitting relationship, determining the fan speed in the current detection period includes:

[0039] Judging whether the difference is greater than a preset constant value, and the preset constant value is a constant value stored in the air conditioner for judging whether to adjust the fan speed;

[0040] If so, based on the fitting relationship, re-determining the fan speed corresponding to the actual operating parameters of the motor in the current detection period;

[0041] If not, determining the fan speed in the previous detection period as the fan speed in the current detection period.

[0042] In a second aspect, a controller is provided, which includes at least one processor; and a memory communicatively connected to the at least one processor; wherein, a computer program is stored in the memory, and when the computer program is executed by the at least one processor, the method described in any one of the technical solutions of the above-mentioned fan speed control method is implemented.

[0043] In a third aspect, a computer-readable storage medium is provided, which stores multiple program codes, and the program codes are suitable for being loaded and run by a processor to execute the method described in any one of the technical solutions of the above-mentioned fan speed control method.

[0044] In a fourth aspect, an air conditioner is provided, which includes the controller described in the above-mentioned controller technical solution.

[0045] One or more of the above technical solutions of the present application have at least one or more of the following beneficial effects:

[0046] In the technical solution of implementing the fan speed control method provided by the present application, the present application determines the fan speed corresponding to the actual operating parameters of the motor of the air conditioner based on a preset fitting relationship by obtaining the actual operating parameters of the motor of the air conditioner. The fitting relationship is the relationship between the actual operating parameters of the motor and the fan speed obtained on the premise of ensuring that the air volume at the air outlet of the air conditioner is a preset air volume under different air duct static pressure conditions of the air conditioner. The air conditioner operation is controlled according to the fan speed so that the air volume at the air outlet of the air conditioner is the preset air volume. Through the above configuration method, the present application can directly obtain the fan speed of the air conditioner through the pre-obtained fitting relationship, so as to use the fan speed to weaken the influence of the air duct static pressure of the air conditioner on the air volume at the air outlet of the air conditioner and make the air conditioner reach the preset air volume. In this way, it is not necessary to measure the current air duct static pressure of the air conditioner, and the fan speed is directly adjusted according to the actual operating parameters of the motor of the air conditioner and the preset air volume, so that the air volume at the air outlet of the air conditioner reaches the preset air volume, which is more convenient and fast, realizes the automatic adjustment of the fan speed of the air conditioner, and avoids the influence of the air duct static pressure of the air conditioner on the air volume at the air outlet of the air conditioner.

[0047] Moreover, since different static pressure conditions can be applied to each air conditioner device, the actual operating parameters of the motor and the data of the fan speed on the premise of the preset air volume are actually measured, and data fitting is performed to obtain the fitting relationship. Therefore, the fitting relationship can be applied to different static pressure conditions and can also be applied to various actual installation environments of the air conditioner in the future, and can meet the different actual application needs of users. Description of the Drawings

[0048] Referring to the accompanying drawings, the disclosure of the present application will become more readily understandable. It is readily understood by those skilled in the art that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. Among them:

[0049] Figure 1 is a schematic diagram of the main steps of a fan speed control method according to an embodiment of the present application;

[0050] Figure 2 is a schematic diagram of a fitting curve in an embodiment of an implementation manner according to an embodiment of the present application;

[0051] Figure 3 is a schematic diagram of the main steps of a fan speed control method according to an embodiment of an implementation manner of the present application;

[0052] Figure 4 is a schematic diagram of the data correspondence relationship between the static pressure of the air duct and the actual operating current of the motor according to an embodiment of the present application;

[0053] Figure 5 is a schematic diagram of the data correspondence relationship between the air volume and the actual operating current of the motor according to an embodiment of the present application;

[0054] Figure 6 is a schematic diagram of the main structure of a controller according to an embodiment of the present application. Specific Embodiments

[0055] The following describes some embodiments of the present application with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application.

[0056] In the description of the present application, "module" and "processor" may include hardware, software, or a combination of both. A module may include a hardware circuit, various suitable sensors, communication ports, memories, and may also include a software part, such as program code, or may be a combination of software and hardware. The processor may be a central processing unit, a microprocessor, an image processor, a digital signal processor, or any other suitable processor. The processor has data and / or signal processing functions. The processor may be implemented in software, in hardware, or in a combination of both. The computer-readable storage medium includes any suitable medium that can store program code, such as magnetic disks, hard disks, optical disks, flash memories, read-only memories, random access memories, and so on. The term "A and / or B" represents all possible combinations of A and B, such as only A, only B, or A and B. The term "at least one A or B" or "at least one of A and B" has a meaning similar to "A and / or B" and may include only A, only B, or A and B. The singular terms "a" and "this" may also include the plural form.

[0057] See the attached Figure 1 , Figure 1 is a schematic diagram of the main steps of the fan speed control method according to an embodiment of the present application. As Figure 1 shown, the fan speed control method in the embodiment of the present application mainly includes the following steps S101 to S103.

[0058] Step S101: Obtain the actual operating parameters of the motor of the air conditioner.

[0059] In this embodiment, the actual operating parameters of the motor refer to the specific values of the operating parameters of the motor of the air conditioner during actual operation. For example, the actual operating parameters of the motor can be the actual current value of the motor operating current, or the actual power value of the actual power consumed by the motor.

[0060] In one embodiment, after the air conditioner is installed and started for the first time, the operation of the air conditioner can be controlled according to the preset fan speed corresponding to the start windshield. After the air conditioner runs stably, then obtain the actual operating parameters of the motor of the air conditioner. Among them, when the operating current value of the motor of the air conditioner fluctuates slightly or no longer changes, it can be set as the stable operation of the air conditioner.

[0061] In one embodiment, the actual operating parameters of the motor include the actual operating current of the motor of the air conditioner and the actual power consumed by the motor of the air conditioner;

[0062] In this embodiment, step S101 may further include steps S1011 to S1012:

[0063] Step S1011: Obtain the real-time current value of the actual operating current of the motor of the air conditioner.

[0064] Step S1012: Obtain the real-time power value of the actual power consumed by the motor of the air conditioner.

[0065] In one embodiment, a multimeter or a clamp ammeter can be set at the entry point of the air conditioner power supply, and the current value measured by the multimeter or the clamp ammeter is directly obtained by the controller inside the air conditioner as the real-time current value of the actual operating current of the motor of the air conditioner.

[0066] In one embodiment, a wattmeter can also be set on the air conditioner power supply, and the power consumption of the air conditioner is measured by the wattmeter, and then the actual power value measured by the wattmeter is obtained by the controller inside the air conditioner as the real-time power value of the actual power consumed by the motor of the air conditioner.

[0067] In other embodiments, other methods can also be used to obtain the actual operating parameters of the motor of the air conditioner, which will not affect the normal implementation of the embodiments of the present application.

[0068] Step S102: Based on a preset fitting relationship, determine the fan speed corresponding to the actual operating parameters of the motor.

[0069] In this embodiment, the fitting relationship is the relationship between the actual operating parameters of the motor and the fan speed obtained on the premise of ensuring that the air volume at the air outlet of the air conditioner is a preset air volume under different air duct static pressure conditions of the air conditioner.

[0070] In this embodiment, since there are slight differences in the performance of the fans or motors of each air conditioner, the actual data of the fan speed and the actual operating parameters of the motor of each air conditioner will also be different. Therefore, each air conditioner can obtain the corresponding fitting relationship during the commissioning stage or before installation. Different air conditioners may correspond to different fitting relationships, and these fitting relationships are all obtained based on the actual data of the corresponding air conditioners, improving the accuracy of the fitting relationship applicable to the air conditioners.

[0071] In one embodiment, during the commissioning stage of the air conditioner, different air duct static pressure conditions can be applied to the air conditioner, and the corresponding values of the fan speed and the actual operating parameters of the motor under each preset air volume of the air conditioner can be actually measured. After data fitting, the corresponding fitting relationship of the air conditioner is obtained and stored in the memory inside the air conditioner to adjust the fan speed of the air conditioner so that the air volume at the air outlet of the air conditioner reaches the preset air volume of each air volume.

[0072] In one embodiment, the fitting relationship can be obtained according to the following steps S201 to S203:

[0073] Step S201: On the premise of a preset air volume, collect the corresponding data of the actual operating parameters of the motor and the fan speed of the air conditioner under different air duct static pressure conditions to obtain the data collection results under different air duct static pressure conditions.

[0074] Step S202: According to the data collection results, conduct data correlation analysis to determine the correlation coefficient between the actual operating parameters of the motor and the fan speed.

[0075] Among them, the correlation coefficient is a coefficient representing the degree of linear correlation between the actual operating parameters of the motor and the fan speed.

[0076] Step S203: Determine the fitting relationship according to the correlation coefficient.

[0077] In one embodiment, the preset air volume can include at least one air volume of the air conditioner.

[0078] In this embodiment, Step S201 can further include Steps S2011 to S2012:

[0079] Step S2011: For each air volume of the air conditioner, adjust the air duct static pressure condition to obtain different air conditioner static pressure values.

[0080] Step S2012: Collect the corresponding data of the actual operating parameters of the motor and the fan speed corresponding to each air conditioner static pressure value to obtain the data collection results under different air duct static pressure conditions.

[0081] In one embodiment, the air duct static pressure conditions applied to the air conditioner can be adjusted by adjusting the length of the air duct connected to the air conditioner, the number of air ducts, or the degree of bending of the air duct.

[0082] In one embodiment, a fitting relationship between the actual operating parameters of the motor and the fan speed can also be determined for each air conditioner air volume. After the air conditioner is started, according to the air conditioner air volume grade at which the air conditioner is started, the applicable fitting relationship is determined, and the corresponding fan speed is determined using this fitting relationship.

[0083] Among them, for each air conditioner air volume grade, the corresponding values of the actual operating parameters of the motor and the fan speed under different air duct static pressure conditions can be obtained in advance, data fitting is performed to obtain the corresponding fitting relationship, and each air conditioner air volume grade and its corresponding fitting relationship are stored correspondingly and saved to the memory of the air conditioner.

[0084] As an example, in an application scenario according to an embodiment of the present application, the preset air volume can be set to 1300 cubic meters per hour (m 3 / h), the air duct static pressure value of the air conditioner is adjusted, and the corresponding data of the actual operating parameters of the motor and the fan speed of the air conditioner are collected under different air duct static pressure values to obtain the data collection results under different air duct static pressure conditions. For example, the data collection results can be as shown in Table 1 below.

[0085] Table 1 Example of data collection results

[0086] In this embodiment, data fitting is performed on the corresponding data of the operating current of the air conditioner motor and the fan speed in Table 1 above. For example, a data fitting curve can be obtained. For details, please refer to the appendix Figure 2 , Figure 2 is a schematic diagram of the fitting curve in an embodiment according to an embodiment of the present application. As Figure 2 shown, with the operating current of the air conditioner motor as the abscissa and the fan speed as the ordinate, the data fitting curve in Figure 2 is obtained. The fitting relationship between the operating current of the air conditioner motor and the fan speed can be determined from the data fitting curve. For example, the data fitting curve can be: P = ax + b.

[0087] Wherein, P represents the fan speed, x represents the operating current of the motor of the air conditioner, and a and b are the regression coefficients of the data fitting curve. Among them, a is the slope term of the data fitting curve, and b is the intercept term of the data fitting curve. Generally, both a and b are constants.

[0088] In one embodiment, the fitting relationship may include a first fitting relationship and a second fitting relationship. The first fitting relationship is the fitting relationship between the actual operating current of the motor and the fan speed, and the second fitting relationship is the fitting relationship between the actual power consumed by the motor and the fan speed.

[0089] In this embodiment, step S102 may further include steps S1021 to S1023:

[0090] Step S1021: Detect whether the supply voltage of the air conditioner exceeds the preset voltage range.

[0091] Step S1022: If not, based on the first fitting relationship, determine the fan speed corresponding to the real-time current value.

[0092] Step S1023: If so, based on the second fitting relationship, determine the fan speed corresponding to the real-time power value.

[0093] In this embodiment, the supply voltage of the air conditioner varies due to different types and usage scenarios. For example, the supply voltage of a household air conditioner is generally 220V, and the supply voltage of a commercial air conditioner is generally 380V. Therefore, in some embodiments, the corresponding preset voltage range can be preset according to the type of air conditioner or the applicable voltage of the air conditioner.

[0094] Among them, since the grid voltage fluctuation is inevitable, especially the electrical components of the air conditioner are sensitive to voltage fluctuations. Therefore, in order to avoid affecting the accuracy of the actual operating current of the motor obtained when the supply voltage of the air conditioner changes greatly, the method of obtaining the actual power consumed by the motor of the air conditioner can be used to determine the fan speed.

[0095] Step S103: Control the operation of the air conditioner according to the fan speed so that the air volume at the air outlet of the air conditioner is the preset air volume.

[0096] In this embodiment, after the fan speed of the air conditioner is determined, the fan of the air conditioner can be controlled to operate at this fan speed through a Variable-frequency Drive (VFD).

[0097] In one embodiment, within the time from when the air conditioner is turned on to when it operates stably, the fan of the air conditioner can be controlled to operate according to the default fan speed corresponding to the preset air volume of the air conditioner. After the air conditioner operates stably, then determine the fan speed corresponding to the actual operating parameters of the motor of the air conditioner, and control the fan of the air conditioner to operate at this fan speed.

[0098] In one embodiment, after step S103, steps S1031 to S1033 may further be included:

[0099] Step S1031: At every preset time interval, obtain the difference between the actual operating parameters of the motor in the current detection period and the actual operating parameters of the motor in the previous detection period.

[0100] Step S1032: Determine the fan speed in the current detection period according to the difference and the fitting relationship.

[0101] Step S1033: Control the operation of the air conditioner according to the fan speed in the current detection period so that the air volume at the air outlet of the air conditioner is the preset air volume.

[0102] In one embodiment, step S1032 may further include steps S10321 to S10323:

[0103] Step S10321: Determine whether the difference is greater than a preset constant value. If so, proceed to step S10322; if not, proceed to step S10323.

[0104] Step S10322: Based on the fitting relationship, re-determine the fan speed corresponding to the actual operating parameters of the motor in the current detection period.

[0105] Step S10323: Determine the fan speed in the previous detection period as the fan speed in the current detection period.

[0106] In this embodiment, the preset constant value is the constant value stored in the air conditioner for determining whether to adjust the fan speed.

[0107] As an example, reference may be made to the appendix Figure 3 , the appendix Figure 3 is a schematic diagram of the main step flow of the fan speed control method according to an embodiment of the present application. As Figure 3 shown, after step S103, steps S301 to S307 may further be included:

[0108] Step S301: When the air conditioner is operating normally, detect the operating value Id1 of the air conditioner motor current in the current detection period.

[0109] Step S302: After a preset time period, detect the operating value Id2 of the air conditioner motor current in the current detection period again.

[0110] Step S303: Calculate the difference between the operating values Id1 and Id2 of the air conditioner motor current and determine whether the difference is greater than a preset constant Pd. If so, proceed to step S305; if not, proceed to step S304.

[0111] Step S304: Control the blower of the air conditioner to operate at the current blower speed.

[0112] Step S305: Obtain the fitting relationship corresponding to the air conditioner.

[0113] Step S306: According to the fitting relationship and based on the actual operating parameters of the motor of the air conditioner at present, re-determine the blower speed.

[0114] Step S307: Control the blower of the air conditioner to operate according to the blower speed.

[0115] In this embodiment, the preset constant Pd can be set according to the type of the air conditioner.

[0116] In one embodiment, the operating values of the motor current of the air conditioner obtained in each detection period can be saved. Then, in each detection period, the operating value of the motor current "Id before" in the previous detection period is subtracted from the operating value of the motor current "Id after" in the current detection period, and the absolute value is taken, that is, |Id before - Id after|. Then, it is judged whether |Id before - Id after| > Pd holds. If it holds, the blower speed is re-determined; if it does not hold, the air conditioner is controlled to operate at the current blower speed.

[0117] Based on the method described in the above steps S101 to S103, the present application can directly obtain the blower speed of the air conditioner through the pre-obtained fitting relationship, so as to use the blower speed to weaken the influence of the air duct static pressure of the air conditioner on the air volume at the air outlet of the air conditioner, so that the air conditioner reaches the preset air volume. In this way, there is no need to measure the current air duct static pressure of the air conditioner, and the blower speed is directly adjusted according to the actual operating parameters of the motor of the air conditioner and the preset air volume, so that the air volume at the air outlet of the air conditioner reaches the preset air volume, which is more convenient and fast, realizes the automatic adjustment of the blower speed of the air conditioner, and avoids the influence of the air duct static pressure of the air conditioner on the air volume at the air outlet of the air conditioner.

[0118] Moreover, since different static pressure conditions can be applied to each air conditioner device, the actual operating parameters of the motor and the blower speed data on the premise of the preset air volume are actually measured, and data fitting is performed to obtain the fitting relationship. Therefore, this fitting relationship can be applied to different static pressure conditions and can also be applied to various actual installation environments of the air conditioner later, and can meet the different actual application requirements of users.

[0119] In an application scenario according to an embodiment of the present application, on the premise that the fan speed of the air conditioner is a preset speed, the relationship between the static pressure of the air duct and the air volume at the air outlet of the air conditioner can be obtained, and on the premise that the fan speed of the air conditioner is a preset speed, the relationship between the actual operating current of the motor or the actual power consumption of the motor and the static pressure of the air duct under different static pressure conditions of the air duct can be obtained. Thus, the influence of the static pressure condition of the air duct on the air volume at the air outlet of the air conditioner can be determined through the actual operating current of the motor or the actual power consumption of the motor. Furthermore, by adjusting the fan speed of the air conditioner, the influence of the static pressure condition of the air duct on the air volume at the air outlet of the air conditioner can be offset, so that the air volume at the air outlet of the air conditioner reaches the preset air volume.

[0120] In this embodiment, on the premise that the fan speed of the air conditioner is a preset speed, different static pressure conditions of the air duct can be adjusted to obtain the specific data of the air volume at the air outlet of the corresponding air conditioner, the actual operating current of the motor, and the actual power consumption of the motor. The specific data acquisition results can be shown in Table 2.

[0121] Table 2 Example of specific data acquisition results

[0122] By drawing and analyzing the measured data in Table 2, reference can be made to Appendix Figure 4 and Appendix Figure 5 . Appendix Figure 4 is a schematic diagram of the data correspondence relationship between the static pressure of the air duct and the actual operating current of the motor according to an embodiment of the present application. Appendix Figure 5 is a schematic diagram of the data correspondence relationship between the air volume and the actual operating current of the motor according to an embodiment of the present application. As Figure 4 shown, the static pressure of the air duct affects the magnitude of the actual operating current of the air conditioner motor. To maintain the fan speed unchanged, the greater the static pressure of the air duct, the greater the acting force on the fan blades of the air conditioner fan, and the corresponding actual operating current of the motor is greater. As Figure 5 shown, on the premise that the static pressure of the air duct increases, the air volume at the air outlet of the air conditioner will decrease.

[0123] From Figure 4 and Figure 5 , it can be known that the change of the static pressure of the air duct can be judged through the change of the actual operating current of the motor. In this way, under different static pressure conditions of the air duct, on the premise of ensuring that the air volume at the air outlet of the air conditioner is the preset air volume, the fitting relationship between the actual operating parameters of the motor and the fan speed can be determined.

[0124] In one embodiment, after determining the fan speed corresponding to the actual operating parameters of the current motor of the air conditioner through this fitting relationship, the air conditioner fan of the air conditioner can be controlled to operate at this fan speed by increasing the motor operating current, so as to offset the influence of the static pressure condition of the air duct on the air volume at the air outlet of the air conditioner, so that the air volume at the air outlet of the air conditioner reaches the preset air volume.

[0125] It should be noted that although the above embodiments describe the various steps in a specific order, those skilled in the art can understand that in order to achieve the effects of the present application, it is not necessary for different steps to be executed in such an order. They can be executed simultaneously (in parallel) or in other orders, and these adjusted solutions are equivalent technical solutions to the technical solutions described in the present application, and thus will also fall within the protection scope of the present application.

[0126] Those skilled in the art can understand that all or part of the processes in the method of the above embodiments of the present application can also be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file or some intermediate form, etc. The computer-readable storage medium can include: any entity or device, medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory, random access memory, electrical carrier signal, telecommunication signal, and software distribution medium, etc., that can carry the computer program code.

[0127] On the other hand, the present application also provides a computer-readable storage medium.

[0128] In an embodiment of a computer-readable storage medium according to the present application, the computer-readable storage medium can be configured to store a program for executing the fan speed control method of the above method embodiments. This program can be loaded and run by a processor to implement the above fan speed control method. For the sake of simplicity, only the parts related to the embodiments of the present application are shown. For specific technical details not disclosed, please refer to the method part of the embodiments of the present application. The computer-readable storage medium can be a storage device formed by various electronic devices. Optionally, the computer-readable storage medium in the embodiments of the present application is a non-transitory computer-readable storage medium.

[0129] On the other hand, the present application also provides a controller.

[0130] In an embodiment of a controller according to the present application, the controller can include at least one processor; and a memory communicatively connected to at least one processor; wherein, a computer program is stored in the memory, and when the computer program is executed by at least one processor, the fan speed control method described in any of the above embodiments is implemented. The controller described in the present application can include devices such as an internal controller of an intelligent air conditioner, an internal control circuit of an intelligent air conditioner, and an intelligent fan. Refer to the appendix Figure 6 , Figure 6Exemplarily shown in the figure is that the memory 11 and the processor 12 are communicatively connected via a bus.

[0131] In some embodiments of the present application, the controller may further include at least one sensor for sensing information. The sensor is communicatively connected to any type of processor mentioned in the present application.

[0132] Another aspect of the present application also provides an air conditioner.

[0133] In an embodiment of an air conditioner according to the present application, the air conditioner may include the controller of the above-mentioned controller embodiment to implement the fan speed control method described in any of the above embodiments.

[0134] So far, the technical solution of the present application has been described in conjunction with an embodiment shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present application.

Claims

1. A method for controlling the rotational speed of a fan, characterized in that, The method includes: Obtaining the actual operating parameters of the motor of the air conditioner; Based on a preset fitting relationship, determining the fan speed corresponding to the actual operating parameters of the motor; wherein, the fitting relationship is the relationship between the actual operating parameters of the motor and the fan speed obtained under different air duct static pressure conditions of the air conditioner on the premise of ensuring that the air volume at the air outlet of the air conditioner is a preset air volume; Controlling the operation of the air conditioner according to the fan speed so that the air volume at the air outlet of the air conditioner is the preset air volume.

2. The fan speed control method according to claim 1, wherein: The method further includes obtaining the fitting relationship according to the following steps: On the premise of a preset air volume, under different air duct static pressure conditions, collecting the corresponding data of the actual operating parameters of the motor and the fan speed of the air conditioner to obtain the data collection results under different air duct static pressure conditions; According to the data collection results, performing data correlation analysis to determine the correlation coefficient between the actual operating parameters of the motor and the fan speed, and the correlation coefficient is a coefficient representing the linear correlation degree between the actual operating parameters of the motor and the fan speed; Determining the fitting relationship according to the correlation coefficient.

3. The fan speed control method according to claim 2, wherein: The preset air volume includes at least one air volume of the air conditioner; The step of, on the premise of a preset air volume, under different air duct static pressure conditions, collecting the corresponding data of the actual operating parameters of the motor and the fan speed of the air conditioner to obtain the data collection results under different air duct static pressure conditions includes: For each air volume of the air conditioner, adjusting the air duct static pressure conditions to obtain different air conditioner static pressure values; Collecting the corresponding data of the actual operating parameters of the motor and the fan speed corresponding to each air conditioner static pressure value to obtain the data collection results under different air duct static pressure conditions.

4. The fan speed control method according to claim 1, wherein: The actual operating parameters of the motor include the actual operating current of the motor of the air conditioner and / or the actual power consumption of the motor of the air conditioner; The step of obtaining the actual operating parameters of the motor of the air conditioner includes: Obtaining the real-time current value of the actual operating current of the motor of the air conditioner; And / or Obtaining the real-time power value of the actual power consumption of the motor of the air conditioner.

5. The fan speed control method according to claim 4, wherein: The fitting relationship includes a first fitting relationship and a second fitting relationship. The first fitting relationship is the fitting relationship between the actual operating current of the motor and the fan speed, and the second fitting relationship is the fitting relationship between the actual power consumption of the motor and the fan speed; The step of, based on a preset fitting relationship, determining the fan speed corresponding to the actual operating parameters of the motor includes: Detecting whether the power supply voltage of the air conditioner exceeds a preset voltage range; If not, determining the fan speed corresponding to the real-time current value based on the first fitting relationship; If so, determining the fan speed corresponding to the real-time power value based on the second fitting relationship.

6. The fan speed control method according to claim 1, wherein: After controlling the operation of the air conditioner according to the fan speed, it includes: At every preset time interval, obtain the difference between the actual operating parameters of the motor in the current detection period and the actual operating parameters of the motor in the previous detection period; Determine the fan speed in the current detection period according to the difference and the fitting relationship; Control the operation of the air conditioner according to the fan speed in the current detection period so that the air volume at the air outlet of the air conditioner is the preset air volume.

7. The fan speed control method according to claim 6, wherein The step of determining the fan speed in the current detection period according to the difference and the fitting relationship includes: Judge whether the difference is greater than a preset constant value, and the preset constant value is a constant value stored in the air conditioner for judging whether to adjust the fan speed; If so, based on the fitting relationship, re-determine the fan speed corresponding to the actual operating parameters of the motor in the current detection period; If not, determine the fan speed in the previous detection period as the fan speed in the current detection period.

8. A controller, characterized in that, It includes: At least one processor; And a memory communicatively connected to the at least one processor; Wherein, a computer program is stored in the memory, and when the computer program is executed by the at least one processor, the fan speed control method described in any one of claims 1 to 7 is implemented.

9. A computer-readable storage medium storing multiple program codes, characterized in that, The program code is adapted to be loaded and run by a processor to execute the fan speed control method described in any one of claims 1 to 7.

10. An air conditioner, characterized in that, The air conditioner includes the controller described in claim 8.

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