Constant-air-volume operation method and apparatus for indoor fan, and air conditioner and storage medium

Abstract

Provided in the present application are a constant-air-volume operation method and apparatus for an indoor fan, and an air conditioner and a storage medium. The method comprises: acquiring an air-duct static pressure and a target air volume, wherein the air-duct static pressure is a static pressure acquired on the basis of an operation rotation speed and an operation power; acquiring a target rotation speed on the basis of the air-duct static pressure and the target air volume; and adjusting the operation rotation speed to the target rotation speed. In this way, a corresponding air-duct static pressure can be acquired on the basis of an operation rotation speed and an operation power without the need for manually setting the static pressure by a debugging personnel, that is, air-duct static pressures can be automatically matched according to different air duct lengths, thereby saving on manpower, saving on time and being able to avoid an error caused by manual adjustment. Furthermore, the problem of the air output effect of an indoor fan being poor due to an improper design or installation error of an air duct of the indoor fan can be avoided, and when a target air volume is unchanged, it can be ensured that the indoor fan operates in a constant air volume mode, thereby ensuring the air output effect of the indoor fan, and improving the usage experience of a user.

Description

Constant air volume operation method and device for indoor fan, air conditioner and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 2023106956094, filed on June 12, 2023, entitled “Constant air volume operation method, device, air conditioner and storage medium for indoor fan”, which is incorporated herein by reference in its entirety. Technical Field

[0003] The present application relates to the field of air conditioning technology, and in particular to a method and device for operating an indoor fan at a constant air volume, an air conditioner, and a storage medium. Background Art

[0004] Currently, during static pressure commissioning of the DC air duct of an air conditioner's indoor fan, on-site commissioning personnel must manually adjust the static pressure of the indoor fan duct using a static pressure dial, as different air conditioners require different duct lengths. If the on-site commissioning personnel incorrectly set the dial, the indoor fan will not be able to achieve optimal operating conditions.

[0005] It can be seen that the current static pressure debugging process of the air duct of the indoor fan of the air conditioner has the disadvantages of being time-consuming, manpower-consuming, having a high error rate, and having high requirements for the debugging personnel. As a result, there will be problems with poor air output effect of the indoor fan due to improper design of the air duct of the indoor fan or installation errors.

[0006] Summary of the Invention

[0007] The present application provides a method, device, air conditioner, and storage medium for operating an indoor fan at a constant air volume, aiming to address the shortcomings of the prior art, such as being time-consuming, labor-intensive, error-prone, and requiring high commissioning personnel. Furthermore, the method can lead to poor airflow from the indoor fan due to improper duct design or installation errors, thereby saving manpower and time and avoiding errors caused by manual adjustment. Furthermore, the method can avoid the problem of poor airflow from the indoor fan due to improper duct design or installation errors.

[0008] The present application provides a method for operating an indoor fan at a constant air volume, comprising:

[0009] Obtaining the duct static pressure and target air volume, wherein the duct static pressure is the static pressure obtained based on the operating speed and operating power;

[0010] Obtaining a target rotation speed based on the air duct static pressure and the target air volume;

[0011] The operating speed is adjusted to the target speed.

[0012] According to a constant air volume operation method of an indoor fan provided by the present application, the step of obtaining the air duct static pressure includes:

[0013] The duct static pressure is obtained by calculation based on the pre-acquired static pressure parameter, the operating speed, the operating power, the rated speed and the rated power.

[0014] According to a constant air volume operation method of an indoor fan provided by the present application, before the step of calculating based on the pre-acquired static pressure parameter, the operating speed, the operating power, the rated speed, and the rated power to obtain the duct static pressure, the method further includes:

[0015] Acquiring fitting data and a first initial parameter, wherein the fitting data includes a fitting speed, a fitting power, and a fitting static pressure;

[0016] determining a static pressure to be used based on the fitted rotational speed, the fitted power, and the first initial parameter;

[0017] Adjusting the first initial parameter based on the static pressure to be used and the fitted static pressure to obtain an adjusted first parameter;

[0018] When the adjusted first parameter meets the preset first parameter condition, the adjusted first parameter is used as the static pressure parameter.

[0019] According to a constant air volume operation method of an indoor fan provided by the present application, the static pressure parameters include a first static pressure parameter, a second static pressure parameter, a third static pressure parameter, a fourth static pressure parameter, a fifth static pressure parameter, and a sixth static pressure parameter;

[0020] The step of calculating the duct static pressure based on the pre-acquired static pressure parameter, the operating speed, the operating power, the rated speed, and the rated power includes:

[0021] The sum of the first static pressure parameter, the product of the second static pressure parameter and the first ratio, the product of the third static pressure parameter and the square of the first ratio, the product of the fourth static pressure parameter, the first ratio and the second ratio, the product of the fifth static pressure parameter, the square of the first ratio and the second ratio, and the product of the sixth static pressure parameter and the second ratio is used as the duct static pressure, wherein the first ratio is a ratio obtained based on the operating speed and the rated speed, and the second ratio is a ratio obtained based on the operating power and the rated power.

[0022] According to a constant air volume operation method for an indoor fan provided by the present application, the step of obtaining a target speed based on the air duct static pressure and the target air volume includes:

[0023] The target rotational speed is obtained by performing calculation based on the duct static pressure, the pre-acquired air volume parameter, the target air volume, the rated air volume and the rated rotational speed.

[0024] According to a constant air volume operation method for an indoor fan provided by the present application, before the step of calculating based on the air duct static pressure, the pre-acquired air volume parameter, the target air volume, the rated air volume, and the rated speed to obtain the target speed, the method further includes:

[0025] Acquiring fitting data, fitting air volume, and a second initial parameter, wherein the fitting data includes fitting speed and fitting static pressure;

[0026] determining an air volume to be used based on the fitted rotational speed, the fitted static pressure, and the second initial parameter;

[0027] Adjusting the second initial parameter based on the air volume to be used and the fitted air volume to obtain an adjusted second parameter;

[0028] When the adjusted second parameter meets the preset second parameter condition, the adjusted second parameter is used as the air volume parameter.

[0029] According to a constant air volume operation method of an indoor fan provided by the present application, the air volume parameters include a first air volume parameter, a second air volume parameter, a third air volume parameter and a fourth air volume parameter;

[0030] The step of calculating the target speed based on the duct static pressure, the pre-acquired air volume parameter, the target air volume, the rated air volume, and the rated speed includes:

[0031] The quotient of the target air volume and the rated air volume, the difference between the first air volume parameter and the first static pressure parameter is used as a first parameter to be used, wherein the first static pressure parameter is a parameter determined based on the duct static pressure and the third air volume parameter;

[0032] The sum of the second air volume parameter and the second static pressure parameter is used as the second parameter to be used, wherein the second static pressure parameter is a parameter determined based on the duct static pressure and the fourth air volume parameter;

[0033] A target rotation speed is determined based on the first parameter to be used, the second parameter to be used, and the rated rotation speed.

[0034] The present application also provides a constant air volume operation device for an indoor fan, comprising:

[0035] A first acquisition module is configured to acquire an air duct static pressure and a target air volume, wherein the air duct static pressure is a static pressure acquired based on an operating speed and an operating power;

[0036] A second acquisition module is configured to acquire a target rotation speed based on the air duct static pressure and the target air volume;

[0037] The regulating module is used to regulate the operating speed to the target speed.

[0038] The present application also provides an air conditioner, including an indoor fan, the indoor fan including a memory, a processor and a computer program stored in the memory and executable on the processor, and when the processor executes the program, the steps of the constant air volume operation method of the indoor fan as described in any one of the above are implemented.

[0039] The present application also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the constant air volume operation method of the indoor fan as described in any one of the above are implemented.

[0040] The constant air volume operation method, device, air conditioner and storage medium of the indoor fan provided in the present application are obtained by obtaining the duct static pressure and target air volume, wherein the duct static pressure is the static pressure obtained based on the operating speed and operating power, and based on the duct static pressure and the target air volume, obtaining the target speed, and adjusting the operating speed to the target speed.

[0041] This eliminates the need for commissioning personnel to manually set static pressure. Instead, the corresponding duct static pressure can be obtained based on the operating speed and operating power. This is equivalent to automatically matching the duct static pressure to different duct lengths, saving manpower and time, and avoiding errors caused by manual adjustment. Furthermore, it can avoid the problem of poor indoor fan airflow due to improper duct design or installation errors. When the target air volume remains unchanged, the indoor fan can be guaranteed to operate at a constant air volume, ensuring the indoor fan's airflow effect and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0043] FIG1 is a flow chart of a method for operating a constant air volume indoor fan provided by the present application;

[0044] FIG2 is a schematic structural diagram of a constant air volume operation device for an indoor fan provided by the present application;

[0045] FIG3 is a schematic structural diagram of the indoor fan provided in this application. DETAILED DESCRIPTION

[0046] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0047] To save manpower, save time, reduce error rates, and ensure the air output effect of the indoor fan, the embodiments of the present application provide a method, device, air conditioner, non-transitory computer-readable storage medium, and computer program product for operating an indoor fan at a constant air volume. The following describes a method for operating an indoor fan at a constant air volume provided by the embodiments of the present application in conjunction with FIG1 .

[0048] As shown in FIG1 , an embodiment of the present application provides a method for operating an indoor fan at a constant air volume, comprising the following steps.

[0049] S101: Obtain the duct static pressure and target air volume.

[0050] To ensure the optimal airflow for each air conditioner's indoor unit based on the specific indoor fan duct configuration, the indoor fan duct static pressure and target air volume are acquired in real time while the air conditioner is running. Duct static pressure is calculated based on the operating speed and power. The target air volume can be set by the user based on their specific needs.

[0051] S102: Obtain a target rotation speed based on the air duct static pressure and the target air volume.

[0052] After obtaining the duct static pressure and target air volume, the target speed can be obtained based on the duct static pressure and target air volume. In one embodiment, the characteristics of the indoor fan of the air conditioner can be identified, and the fan performance curve can be obtained based on the characteristics of the indoor fan.

[0053] When a first fan performance curve determined by fitting the rotational speed and the fitting power is obtained, the duct static pressure may be determined based on the first fan performance curve, the operating rotational speed, and the operating power.

[0054] When the second fan performance curve determined by fitting the speed, fitting the power, and fitting the static pressure is obtained, the target speed can be obtained based on the second fan performance curve, the target air volume, and the duct static pressure.

[0055] S103: Adjust the operating speed to the target speed.

[0056] After obtaining the target speed, the operating speed of the air conditioner indoor fan can be adjusted to the target speed. Since the duct static pressure and target air volume are obtained in real time, the target speed is also obtained in real time, so the operating speed of the indoor fan can be adjusted in real time.

[0057] As can be seen, in this embodiment, the commissioning personnel do not need to manually set the static pressure. Instead, the corresponding duct static pressure can be obtained based on the operating speed and operating power. This is equivalent to automatically matching the duct static pressure to different duct lengths, saving manpower and time, and avoiding errors caused by manual adjustment. Furthermore, it can avoid the problem of poor indoor fan airflow caused by improper duct design or installation errors. When the target air volume remains unchanged, the indoor fan can be guaranteed to operate at a constant air volume, ensuring the indoor fan's airflow effect and improving the user experience.

[0058] That is to say, the constant air volume operation method of the indoor fan provided in the embodiment of the present application can realize digital constant air volume fan control. During installation, there is no need to use a controller or indoor unit dial code to perform manual settings. Instead, it can automatically calculate the target speed based on the duct static pressure and target air volume according to the different lengths of the duct, thereby realizing automatic matching of static pressure.

[0059] As an implementation of the embodiment of the present application, the step of obtaining the static pressure of the air duct may include:

[0060] The duct static pressure is obtained by calculation based on the pre-acquired static pressure parameter, the operating speed, the operating power, the rated speed and the rated power.

[0061] The static pressure parameter is determined based on the first fan performance curve, which is determined by fitting the speed and power. The operating speed is the actual current operating speed of the indoor fan, and the operating power is the actual current operating power of the indoor fan. The rated speed is the rated speed of the indoor fan, and the rated power is the operating power of the indoor fan when running at the rated speed.

[0062] The static pressure parameters may include a first static pressure parameter, a second static pressure parameter, a third static pressure parameter, a fourth static pressure parameter, a fifth static pressure parameter, and a sixth static pressure parameter. The step of calculating the duct static pressure based on the pre-acquired static pressure parameters, the operating speed, the operating power, the rated speed, and the rated power may include:

[0063] The sum of the first static pressure parameter, the product of the second static pressure parameter and the first ratio, the product of the third static pressure parameter and the square of the first ratio, the product of the fourth static pressure parameter, the first ratio and the second ratio, the product of the fifth static pressure parameter, the square of the first ratio and the second ratio, and the product of the sixth static pressure parameter and the second ratio is used as the duct static pressure.

[0064] The first ratio is a ratio obtained based on the operating speed and the rated speed, and the second ratio is a ratio obtained based on the operating power and the rated power.

[0065] The above formula for calculating the static pressure of the duct can be shown as formula (1):

[0066] Among them, P st is the duct static pressure, P c0 is the first parameter of static pressure, P c1 is the second parameter of static pressure, P c2 is the third parameter of static pressure, P c3 is the fourth parameter of static pressure, P c4 The fifth parameter of static pressure, P c5 is the sixth parameter of static pressure, n is the operating speed, n norm is the rated speed, p is the operating power, p norm is the rated power, is the first ratio, is the second ratio.

[0067] It can be seen that in this embodiment, the duct static pressure can be calculated through the static pressure parameter, operating speed, operating power, rated speed and rated power, which can improve the accuracy of the duct static pressure.

[0068] As an implementation manner of an embodiment of the present application, before the step of calculating based on the pre-acquired static pressure parameter, the operating speed, the operating power, the rated speed, and the rated power to obtain the duct static pressure, the method may further include:

[0069] Get the fitting data and the first initial parameters.

[0070] In order to determine the duct static pressure of the indoor fan, fitting data and a first initial parameter may be obtained, wherein the fitting data includes fitting speed, fitting power and fitting static pressure, and the first initial parameter is a constant preset by the user.

[0071] The static pressure to be used is determined based on the fitted speed, the fitted power, and the first initial parameter, wherein the fitted speed includes the fitted operating speed and the fitted rated speed, and the fitted power includes the fitted operating power and the fitted rated power.

[0072] The formula for determining the static pressure to be used can be shown as formula (2):

[0073] Among them, P sy is the static pressure to be used, P0 is the first initial parameter 0, P1 is the first initial parameter 1, P2 is the first initial parameter 2, P3 is the first initial parameter 3, P4 is the first initial parameter 4 and P5 is the first initial parameter 5, m is the fitting speed, m norm To fit the rated speed, p a is the fitting power, p anorm For rated power.

[0074] The first initial parameter is adjusted based on the static pressure to be used and the fitting static pressure to obtain an adjusted first parameter.

[0075] After the static pressure to be used is determined using the above formula (2), the first initial parameter can be adjusted based on the error between the static pressure to be used and the fitted static pressure to obtain the adjusted first parameter. That is, P0, P1, P2, P3, P4, and P5 are adjusted to obtain the adjusted first parameter.

[0076] When the adjusted first parameter meets the preset first parameter condition, the adjusted first parameter is used as the static pressure parameter.

[0077] The preset first parameter condition is a condition that the difference between the static pressure to be used and the fitted target static pressure is lower than a preset static pressure threshold. When the difference between the static pressure to be used and the fitted target static pressure is lower than the preset static pressure threshold, the adjusted first parameter corresponding to the static pressure to be used meets the preset first parameter condition. Therefore, the adjusted first parameter can be used as the static pressure parameter, so that P can be obtained. c0 、P c1 、P c2 、P c3 、P c4 and P c5 .

[0078] It can be seen that in this embodiment, the static pressure to be used can be determined by fitting the data and the first initial parameter, and then the first initial parameter is adjusted based on the static pressure to be used and the fitted static pressure to obtain the static pressure parameter. The static pressure parameter is used to subsequently obtain the duct static pressure, which can improve the accuracy of obtaining the duct static pressure.

[0079] As an implementation of an embodiment of the present application, the step of obtaining the target rotation speed based on the air duct static pressure and the target air volume may include:

[0080] The target rotational speed is obtained by performing calculation based on the duct static pressure, the pre-acquired air volume parameter, the target air volume, the rated air volume and the rated rotational speed.

[0081] The air volume parameter is a parameter determined based on a second fan performance curve determined by fitting the speed, power, and static pressure. The rated speed is the rated speed corresponding to the indoor fan, and the rated air volume is the air volume corresponding to the indoor fan operating at the rated speed.

[0082] The air volume parameters include a first air volume parameter, a second air volume parameter, a third air volume parameter, and a fourth air volume parameter. The step of calculating the target speed based on the duct static pressure, the pre-acquired air volume parameters, the target air volume, the rated air volume, and the rated speed may include:

[0083] The quotient of the target air volume and the rated air volume, the difference between the first air volume parameter and the first static pressure parameter is used as a first parameter to be used, wherein the first static pressure parameter is a parameter determined based on the duct static pressure and the third air volume parameter;

[0084] The sum of the second air volume parameter and the second static pressure parameter is used as the second parameter to be used, wherein the second static pressure parameter is a parameter determined based on the duct static pressure and the fourth air volume parameter;

[0085] A target rotation speed is determined based on the first parameter to be used, the second parameter to be used, and the rated rotation speed.

[0086] The formula for calculating the target speed can be shown as formula (3):

[0087] Among them, n st is the target formula, Q c0 The first parameter of air volume, Q c1 The second parameter of air volume, Q c2 Q is the third parameter of air volume, c3 The fourth parameter of air volume, Q target air volume, Q norm is the rated air volume, n norm is the rated speed, Q c2 P st is the first static pressure parameter, Q c3 P st is the second static pressure parameter, is the first parameter to be used, Q c1 +Q c3 P stThe 100 in the above formula (3) is only set for the convenience of calculation, and other values ​​can be selected according to actual usage.

[0088] It can be seen that in this embodiment, the target speed can be obtained by calculation through the air duct static pressure, air volume parameters, target air volume, rated air volume and rated speed, which can improve the accuracy of the target speed.

[0089] As an implementation manner of an embodiment of the present application, before the step of calculating based on the duct static pressure, the pre-acquired air volume parameter, the target air volume, the rated air volume, and the rated speed to obtain the target speed, the method may further include:

[0090] Get the fitting data, fitting air volume and the second initial parameter.

[0091] In order to determine the target speed, fitting data, fitting air volume and a second initial parameter can be obtained, wherein the fitting data includes the fitting speed and the fitting static pressure, the fitting air volume includes the fitting target air volume and the fitting rated air volume, and the second initial parameter is a constant pre-set by the user.

[0092] Based on the fitting speed, the fitting static pressure and the second initial parameter, the air volume to be used is determined; wherein the fitting speed includes the fitting operating speed and the fitting rated speed. The formula for determining the air volume to be used can be shown as formula (4):

[0093] Among them, Q sy is the air volume to be used, Q0 is the second initial parameter 0, Q1 is the second initial parameter 1, Q2 is the second initial parameter 2, Q3 is the second initial parameter 3, m is the fitting speed, m norm To fit the rated speed, Q norm To fit the rated air volume.

[0094] Based on the air volume to be used and the fitted air volume, the second initial parameter is adjusted to obtain an adjusted second parameter.

[0095] After the air volume to be used is determined by the above formula (4), the second initial parameter can be adjusted based on the error between the air volume to be used and the fitted air volume to obtain the adjusted second parameter, that is, Q0, Q1, Q2, and Q3 are adjusted to obtain the adjusted second parameter.

[0096] When the adjusted second parameter meets the preset second parameter condition, the adjusted second parameter is used as the air volume parameter.

[0097] The preset second parameter condition is a condition that the difference between the air volume to be used and the fitted target air volume is lower than the preset air volume threshold. When the difference between the air volume to be used and the fitted target air volume is lower than the preset air volume threshold, the adjusted second parameter corresponding to the air volume to be used meets the preset second parameter condition. Therefore, the adjusted second parameter can be used as the air volume parameter, so that Q can be obtained. c0 , Q c1 , Q c2 , Q c3 .

[0098] For example, in Q c0 is 13.87, Q c1 is 120.43, Q c2 is 1.51, Q c3 When is 0.76, the above formula (3) can be expressed as formula (5) in a specific example:

[0099] It can be seen that in this embodiment, the air volume to be used can be determined by fitting data, fitting air volume and the second initial parameter, and then the second initial parameter is adjusted based on the component to be used and the fitting air volume, so that the air volume parameter can be obtained. The air volume parameter is used to subsequently obtain the target speed, which can improve the accuracy of obtaining the target speed.

[0100] As an implementation of the embodiment of the present application, the step of obtaining the target air volume may include:

[0101] An adjustment instruction is received, wherein the adjustment instruction is an instruction from a user to adjust the air conditioner operation mode according to actual usage requirements.

[0102] Acquire scene information, wherein the scene information is at least one of temperature information corresponding to a preset range of air conditioning operation, user status information, and object information. The user status information is information indicating whether the user is in a state significantly affected by the air conditioning.

[0103] For example, a user is more likely to catch a cold while sleeping, so the user status information may indicate whether the user is sleeping. For another example, elderly users are more susceptible to catching a cold, so the user status information may indicate whether the elderly user is located near an air conditioner vent. The specific settings can be tailored to the actual needs of different users and are not specifically limited here.

[0104] Determine the target air volume based on the adjustment instructions and scene information.

[0105] There are several ways to determine the target air volume:

[0106] The first method is that when the scene information only includes temperature information, the difference between the adjustment temperature corresponding to the adjustment instruction and the ambient temperature represented by the temperature information can be obtained, and then the corresponding target air volume can be determined based on the pre-set correspondence between the difference and the air volume.

[0107] In the second method, when the scene information only includes user status information, the corresponding target air volume can be determined based on the user status information and the pre-set correspondence between the state and the air volume. In the third method, when the scene information only includes object information, the corresponding target air volume can be determined based on the object information and the correspondence between the object and the air volume.

[0108] For example, if there is an obstruction within the first preset distance of the air conditioner, a higher target air volume can be selected. For another example, if there is a easily fallen object at the second preset distance of the air conditioner outlet, a lower target air volume can be selected.

[0109] When the scene information includes temperature information and user status information, the target air volume can be determined using the first and second methods described above. If the target air volumes determined by the two methods are consistent, the target air volume used to calculate the target speed can be obtained. If the target air volumes determined by the two methods are inconsistent, the target air volume used to calculate the target speed can be determined based on the pre-set temperature user weight.

[0110] When the scene information includes both user status information and object information, the target air volume can be determined using the second and third methods described above. If the target air volumes determined by the two methods are consistent, the target air volume used to calculate the target speed can be obtained. If the target air volumes determined by the two methods are inconsistent, the target air volume used to calculate the target speed can be determined based on the pre-set object-user weights.

[0111] When the scene information includes temperature information and object information, the target air volume can be determined using the first and third methods described above. If the target air volumes determined by the two methods are consistent, the target air volume used to calculate the target speed can be obtained. If the target air volumes determined by the two methods are inconsistent, the target air volume used to calculate the target speed can be determined based on the pre-set temperature object weights.

[0112] When the scene information includes temperature information, user status information, and object information, the target air volume can be determined using the first, second, and third methods described above. If the target air volumes determined by the three methods are consistent, the target air volume used to calculate the target speed can be obtained. If the target air volumes determined by the three methods are inconsistent, the target air volume used to calculate the target speed can be determined based on the pre-set temperature, user, and object weights.

[0113] It can be seen that in this embodiment, the target air volume can be determined according to the adjustment instruction and the scene information, so that a more accurate target speed can be obtained later, thereby improving the user experience.

[0114] The constant air volume operation device of the indoor fan provided in the present application is described below. The constant air volume operation device of the indoor fan described below and the constant air volume operation method of the indoor fan described above can be referred to each other.

[0115] As shown in FIG2 , an embodiment of the present application provides a constant air volume operation device for an indoor fan, comprising the following modules:

[0116] A first acquisition module 210 is configured to acquire the duct static pressure and target air volume, wherein the duct static pressure is a static pressure acquired based on the operating speed and operating power;

[0117] A second acquisition module 220 is configured to acquire a target rotation speed based on the duct static pressure and the target air volume;

[0118] The adjustment module 230 is configured to adjust the operating speed to the target speed.

[0119] As an implementation of the embodiment of the present application, the first acquisition module 210 may include:

[0120] The first acquisition unit is configured to obtain the duct static pressure by performing calculation based on the pre-acquired static pressure parameter, the operating speed, the operating power, the rated speed, and the rated power.

[0121] As an implementation of the embodiment of the present application, the above-mentioned device may further include:

[0122] The third acquisition module is used to obtain fitting data and a first initial parameter before calculating based on the pre-acquired static pressure parameters, the operating speed, the operating power, the rated speed and the rated power to obtain the duct static pressure, wherein the fitting data includes the fitting speed, the fitting power and the fitting static pressure.

[0123] A static pressure determination module is configured to determine a static pressure to be used based on the fitted rotational speed, the fitted power, and the first initial parameter.

[0124] A first parameter adjustment module is configured to adjust the first initial parameter based on the static pressure to be used and the fitted static pressure to obtain an adjusted first parameter;

[0125] The static pressure parameter determination module is configured to use the adjusted first parameter as the static pressure parameter if the adjusted first parameter satisfies a preset first parameter condition.

[0126] As an implementation of an embodiment of the present application, the upper static pressure parameter includes a first static pressure parameter, a second static pressure parameter, a third static pressure parameter, a fourth static pressure parameter, a fifth static pressure parameter and a sixth static pressure parameter.

[0127] The above-mentioned first acquisition unit is specifically used to use the sum of the first static pressure parameter, the product of the second static pressure parameter and the first ratio, the product of the third static pressure parameter and the square of the first ratio, the product of the fourth static pressure parameter, the first ratio and the second ratio, the product of the fifth static pressure parameter, the square of the first ratio and the second ratio, and the product of the sixth static pressure parameter and the second ratio as the duct static pressure, wherein the first ratio is a ratio obtained based on the operating speed and the rated speed, and the second ratio is a ratio obtained based on the operating power and the rated power.

[0128] As an implementation of an embodiment of the present application, the second acquisition module 220 includes:

[0129] The second acquisition unit is used to calculate based on the duct static pressure, the pre-acquired air volume parameter, the target air volume, the rated air volume and the rated speed to obtain the target speed.

[0130] As an implementation of the embodiment of the present application, the above-mentioned device may further include:

[0131] The fourth acquisition module is used to obtain fitting data, fitting air volume and second initial parameters before calculating based on the duct static pressure, the pre-acquired air volume parameters, the target air volume, the rated air volume and the rated speed to obtain the target speed, wherein the fitting data includes the fitting speed and the fitting static pressure.

[0132] The air volume determination module is used to determine the air volume to be used based on the fitted rotation speed, the fitted static pressure and the second initial parameter.

[0133] The second parameter adjustment module is used to adjust the second initial parameter based on the air volume to be used and the fitted air volume to obtain an adjusted second parameter.

[0134] The air volume parameter determination module is configured to use the adjusted second parameter as the air volume parameter when the adjusted second parameter meets a preset second parameter condition.

[0135] As an implementation of the embodiment of the present application, the above-mentioned air volume parameters include a first air volume parameter, a second air volume parameter, a third air volume parameter and a fourth air volume parameter.

[0136] The second acquiring unit is specifically configured to use, as the first parameter to be used, a quotient of the target air volume and the rated air volume, a difference between a first air volume parameter and a first static pressure parameter, wherein the first static pressure parameter is a parameter determined based on the duct static pressure and the third air volume parameter;

[0137] The sum of the second air volume parameter and the second static pressure parameter is used as the second parameter to be used, wherein the second static pressure parameter is a parameter determined based on the duct static pressure and the fourth air volume parameter;

[0138] A target rotation speed is determined based on the first parameter to be used, the second parameter to be used, and the rated rotation speed.

[0139] FIG3 illustrates a schematic diagram of the physical structure of an indoor fan of an air conditioner. As shown in FIG3 , the indoor fan may include: a processor 310, a communications interface 320, a memory 330, and a communication bus 340. The processor 310, the communications interface 320, and the memory 330 communicate with each other via the communication bus 340. The processor 310 may invoke logic instructions in the memory 330 to execute a constant air volume operation method for the indoor fan. The method includes: obtaining a duct static pressure and a target air volume, wherein the duct static pressure is a static pressure obtained based on the operating speed and operating power; obtaining a target speed based on the duct static pressure and the target air volume; and adjusting the operating speed to the target speed.

[0140] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0141] On the other hand, the present application also provides a computer program product, which includes a computer program, which can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the constant air volume operation method of the indoor fan provided by the above methods, the method including: obtaining the duct static pressure and target air volume, wherein the duct static pressure is the static pressure obtained based on the operating speed and operating power, and based on the duct static pressure and the target air volume, obtaining the target speed, and adjusting the operating speed to the target speed.

[0142] On the other hand, the present application also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the constant air volume operation method of the indoor fan provided by the above methods. The method includes: obtaining the duct static pressure and the target air volume, wherein the duct static pressure is the static pressure obtained based on the operating speed and the operating power, obtaining the target speed based on the duct static pressure and the target air volume, and adjusting the operating speed to the target speed.

[0143] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0144] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling 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 certain parts of the embodiments.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for operating an indoor fan at a constant air volume, include: Obtaining the duct static pressure and target air volume, wherein the duct static pressure is the static pressure obtained based on the operating speed and the operating power; Based on the air duct static pressure and the target air volume, obtaining a target rotation speed; The operating speed is adjusted to the target speed.

2. The constant air volume operation method of the indoor fan according to claim 1, in, The obtaining of the duct static pressure comprises: The duct static pressure is obtained by calculation based on the pre-acquired static pressure parameter, the operating speed, the operating power, the rated speed and the rated power.

3. The constant air volume operation method of the indoor fan according to claim 2, in, Before calculating based on the pre-acquired static pressure parameter, the operating speed, the operating power, the rated speed and the rated power to obtain the duct static pressure, the method further includes: Acquiring fitting data and a first initial parameter, wherein the fitting data includes a fitting rotation speed, a fitting power, and a fitting static pressure; Determining a static pressure to be used based on the fitted rotational speed, the fitted power and the first initial parameter; Based on the static pressure to be used and the fitted static pressure, adjusting the first initial parameter to obtain an adjusted first parameter; When the adjusted first parameter satisfies a preset first parameter condition, the adjusted first parameter is used as the static pressure parameter.

4. The constant air volume operation method of the indoor fan according to claim 2, in, The static pressure parameters include a first static pressure parameter, a second static pressure parameter, a third static pressure parameter, a fourth static pressure parameter, a fifth static pressure parameter and a sixth static pressure parameter; The step of calculating based on the pre-acquired static pressure parameter, the operating speed, the operating power, the rated speed and the rated power to obtain the duct static pressure comprises: The sum of the first static pressure parameter, the product of the second static pressure parameter and the first ratio, the product of the third static pressure parameter and the square of the first ratio, the product of the fourth static pressure parameter and the first ratio and the second ratio, the product of the fifth static pressure parameter and the square of the first ratio and the second ratio, and the product of the sixth static pressure parameter and the second ratio is calculated. value as the duct static pressure, wherein the first ratio is a ratio based on the operating speed and the rated speed, and the second ratio is a ratio based on the operating power and the rated power.

5. The constant air volume operation method of the indoor fan according to any one of claims 1 to 4, wherein in, The acquiring the target rotation speed based on the air duct static pressure and the target air volume includes: The target rotation speed is obtained by performing calculation based on the duct static pressure, the pre-acquired air volume parameter, the target air volume, the rated air volume and the rated rotation speed.

6. The constant air volume operation method of the indoor fan according to claim 5, in, Before obtaining the target speed by calculating based on the duct static pressure, the pre-acquired air volume parameter, the target air volume, the rated air volume and the rated speed, the method further includes: Acquiring fitting data, fitting air volume, and a second initial parameter, wherein the fitting data includes a fitting rotation speed and a fitting static pressure; Determining the air volume to be used based on the fitted rotation speed, the fitted static pressure and the second initial parameter; Based on the air volume to be used and the fitted air volume, adjusting the second initial parameter to obtain an adjusted second parameter; When the adjusted second parameter meets the preset second parameter condition, the adjusted second parameter is used as the air volume parameter.

7. The constant air volume operation method of the indoor fan according to claim 6, in, The air volume parameters include a first air volume parameter, a second air volume parameter, a third air volume parameter and a fourth air volume parameter; The step of calculating based on the duct static pressure, the pre-acquired air volume parameter, the target air volume, the rated air volume and the rated speed to obtain the target speed comprises: The quotient of the target air volume and the rated air volume, the difference between the first air volume parameter and the first static pressure parameter are used as the first parameter to be used, wherein the first static pressure parameter is a parameter determined based on the duct static pressure and the third air volume parameter; The sum of the second air volume parameter and the second static pressure parameter is used as the second parameter to be used, wherein the second static pressure parameter is a parameter determined based on the duct static pressure and the fourth air volume parameter; A target speed is determined based on the first parameter to be used, the second parameter to be used, and the rated speed.

8. A constant air volume operation device for an indoor fan, include: A first acquisition module is used to acquire the duct static pressure and target air volume, wherein the duct static pressure is a static pressure acquired based on the operating speed and the operating power; A second acquisition module, configured to acquire a target rotation speed based on the duct static pressure and the target air volume; The regulating module is used to regulate the operating speed to the target speed.

9. An air conditioner, comprising an indoor fan, the indoor fan comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, in, When the processor executes the computer program, the steps of the constant air volume operation method of the indoor fan as described in any one of claims 1 to 7 are implemented.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, in, When the computer program is executed by a processor, the steps of the constant air volume operation method of the indoor fan as described in any one of claims 1 to 6 are implemented.

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