Constant air volume operation method, device, air conditioning and storage medium for indoor fans

Abstract

This invention provides a method, device, air conditioner, and storage medium for constant airflow operation of an indoor fan. It obtains the duct static pressure and target airflow, where the duct static pressure is obtained based on the operating speed and power. Based on the duct static pressure and target airflow, the target speed is obtained and adjusted to the target speed. This eliminates the need for manual setting of the static pressure by operators; instead, it automatically matches the duct static pressure to different duct lengths, saving manpower, time, and avoiding errors caused by manual adjustments. Furthermore, it avoids poor airflow performance caused by improper duct design or installation errors. With a constant target airflow, it ensures the indoor fan operates at a constant airflow, guaranteeing effective airflow and improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a constant air volume operation method, device, air conditioner, and storage medium for an indoor fan. Background Technology

[0002] Currently, during the static pressure commissioning of the DC duct of the indoor air conditioner fan, since the duct lengths for different air conditioners are not the same, on-site commissioning personnel need to manually adjust the static pressure of the indoor fan duct using static pressure dialing. If the dialing is set incorrectly by the on-site commissioning personnel, the indoor fan will not be able to reach its optimal operating state.

[0003] It is evident that the current static pressure debugging process for air conditioning indoor fan ducts has drawbacks such as being time-consuming, labor-intensive, having a high error rate, and requiring highly skilled debugging personnel. Consequently, problems such as poor air output performance of indoor fans due to improper duct design or installation errors may occur. Summary of the Invention

[0004] This invention provides a constant airflow operation method, device, air conditioner, and storage medium for an indoor fan, addressing the shortcomings of existing technologies such as time-consuming, labor-intensive, high error rates, and demanding requirements for commissioning personnel. Furthermore, it avoids problems like poor airflow performance caused by improper duct design or installation errors. The invention saves manpower and time, and avoids errors introduced by manual adjustments. Ultimately, it prevents poor airflow performance caused by improper duct design or installation errors.

[0005] This invention provides a method for constant air volume operation of an indoor fan, the method comprising:

[0006] Obtain 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;

[0007] The target rotational speed is obtained based on the duct static pressure and the target air volume;

[0008] Adjust the operating speed to the target speed.

[0009] According to a constant air volume operation method for an indoor fan provided by the present invention, the step of obtaining the static pressure of the air duct includes:

[0010] The static pressure of the duct is calculated based on the pre-acquired static pressure parameters, the operating speed, the operating power, the rated speed, and the rated power.

[0011] According to the constant air volume operation method of an indoor fan provided by the present invention, before the step of calculating the duct static pressure based on pre-acquired static pressure parameters, the operating speed, the operating power, the rated speed, and the rated power, the method further includes:

[0012] Obtain fitting data and first initial parameters, wherein the fitting data includes fitting rotational speed, fitting power, and fitting static pressure;

[0013] Based on the fitted rotational speed, the fitted power, and the first initial parameters, the static pressure to be used is determined;

[0014] Based on the static pressure to be used and the fitted static pressure, the first initial parameter is adjusted to obtain the adjusted first parameter;

[0015] If the adjusted first parameter meets the preset first parameter conditions, the adjusted first parameter shall be used as the static pressure parameter.

[0016] According to the present invention, a constant air volume operation method for an indoor fan is provided, wherein 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.

[0017] The step of calculating the duct static pressure based on pre-acquired static pressure parameters, operating speed, operating power, rated speed, and rated power includes:

[0018] The sum of the products of the first static pressure parameter, the second static pressure parameter, and the first ratio, the third static pressure parameter, and the square of the first ratio, the fourth static pressure parameter, and the first and second ratios, the fifth static pressure parameter, and the sixth static pressure parameter, is taken as the static pressure of the duct. 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.

[0019] According to a constant air volume operation method for an indoor fan provided by the present invention, the step of obtaining a target rotational speed based on the duct static pressure and the target air volume includes:

[0020] The target speed is calculated based on the duct static pressure, the pre-acquired air volume parameters, the target air volume, the rated air volume, and the rated speed.

[0021] According to the present invention, a constant air volume operation method for an indoor fan, prior to the step of calculating the target speed based on the duct static pressure, pre-acquired air volume parameters, the target air volume, the rated air volume, and the rated speed, the method further includes:

[0022] Obtain fitting data, fitting air volume, and second initial parameters, wherein the fitting data includes fitting rotational speed and fitting static pressure;

[0023] Based on the fitted rotational speed, the fitted static pressure, and the second initial parameter, the air volume to be used is determined;

[0024] Based on the air volume to be used and the fitted air volume, the second initial parameter is adjusted to obtain the adjusted second parameter;

[0025] If the adjusted second parameter meets the preset second parameter conditions, the adjusted second parameter shall be used as the air volume parameter.

[0026] According to the present invention, a constant air volume operation method for an indoor fan is provided, wherein 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;

[0027] The step of calculating the target rotational speed based on the duct static pressure, pre-acquired airflow parameters, the target airflow, rated airflow, and rated rotational speed includes:

[0028] 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.

[0029] 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.

[0030] The target speed is determined based on the first parameter to be used, the second parameter to be used, and the rated speed.

[0031] The present invention also provides a constant air volume operation device for an indoor fan, the device comprising:

[0032] The first acquisition module is used to acquire the duct static pressure and target air volume, wherein the duct static pressure is static pressure acquired based on the operating speed and operating power;

[0033] The second acquisition module is used to acquire the target rotational speed based on the duct static pressure and the target air volume;

[0034] An adjustment module is used to adjust the operating speed to the target speed.

[0035] The present invention 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, wherein when the processor executes the program, it implements the steps of the constant air volume operation method of the indoor fan as described above.

[0036] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the constant air volume operation method for an indoor fan as described above.

[0037] The present invention provides a constant air volume operation method, device, air conditioner and storage medium for an indoor fan, which obtains the duct static pressure and target air volume, wherein the duct static pressure is static pressure obtained based on the operating speed and operating power, and the target speed is obtained based on the duct static pressure and target air volume, and the operating speed is adjusted to the target speed.

[0038] This method eliminates the need for manual static pressure settings by technicians. Instead, it automatically adjusts the duct static pressure based on the operating speed and power, effectively matching the static pressure to different duct lengths. This saves manpower, time, and eliminates errors caused by manual adjustments. Furthermore, it avoids poor airflow from indoor fans caused by improper duct design or installation errors. With a constant target airflow, it ensures the indoor fan operates at a constant airflow, guaranteeing effective airflow and improving the user experience. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0040] Figure 1 This is a flowchart illustrating the constant air volume operation method for indoor fans provided by the present invention.

[0041] Figure 2 This is a schematic diagram of the constant air volume operation device for an indoor fan provided by the present invention.

[0042] Figure 3 This is a structural schematic diagram of the indoor fan provided by the present invention. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0044] To save manpower, time, and error rate, while ensuring the air output effect of indoor fans, embodiments of the present invention provide a method, apparatus, air conditioner, non-transitory computer-readable storage medium, and computer program product for constant air volume operation of indoor fans. The following is in conjunction with... Figure 1 This invention provides a method for constant air volume operation of an indoor fan according to an embodiment of the invention.

[0045] like Figure 1 As shown, this embodiment of the invention provides a method for constant air volume operation of an indoor fan, the method comprising:

[0046] S101, obtain the duct static pressure and target air volume.

[0047] To ensure optimal airflow from indoor units of the air conditioner based on the ductwork of different indoor fans, the system can acquire real-time data on the duct static pressure and target airflow of the indoor fans while the air conditioner is running. The duct static pressure is based on the operating speed and power. The target airflow can be set by the user to meet their specific needs.

[0048] S102, Based on the static pressure of the duct and the target air volume, obtain the target rotational speed.

[0049] 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.

[0050] Once the first performance curve of the fan, determined by fitting the speed and power, is obtained, the static pressure of the duct can be determined based on the first performance curve, the operating speed, and the operating power.

[0051] Once the second performance curve of the fan, determined by fitting the speed, power, and static pressure, is obtained, the target speed can be obtained based on the second performance curve of the fan, the target air volume, and the static pressure of the duct.

[0052] S103, adjust the operating speed to the target speed.

[0053] After obtaining the target speed, the operating speed of the indoor air conditioner 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, thus enabling real-time adjustment of the indoor fan's operating speed.

[0054] As can be seen, in this embodiment, there is no need for manual setting of static pressure by commissioning personnel. Instead, the corresponding duct static pressure can be obtained based on the operating speed and power, which is equivalent to automatically matching the duct static pressure according to different duct lengths. This saves manpower, time, and avoids errors caused by manual adjustment. Furthermore, it avoids the problem of poor air output performance of indoor fans caused by improper duct design or installation errors. With the target air volume remaining unchanged, it can ensure that the indoor fan operates at a constant air volume, guaranteeing the air output performance of the indoor fan and improving the user experience.

[0055] In other words, the constant air volume operation method for an indoor fan provided by the embodiments of the present invention can realize digital constant air volume fan control. During installation, there is no need to manually set the fan speed using a controller or indoor unit DIP switch. Instead, it can automatically calculate the target speed based on the duct static pressure and the target air volume according to different duct lengths, thereby achieving automatic matching of static pressure.

[0056] As one embodiment of the present invention, the above-mentioned step of obtaining the static pressure of the duct may include:

[0057] The static pressure of the duct is calculated based on the pre-acquired static pressure parameters, the operating speed, the operating power, the rated speed, and the rated power.

[0058] The static pressure parameter is determined based on the first performance curve of the fan, which is derived by fitting the speed and power. The operating speed is the current actual operating speed of the indoor fan, and the operating power is the current actual 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 operating at its rated speed.

[0059] 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:

[0060] The sum of the products of the first static pressure parameter, the second static pressure parameter and the first ratio, the third static pressure parameter and the square of the first ratio, the fourth static pressure parameter and the first ratio and the second ratio, the fifth static pressure parameter and the square of the first ratio and the second ratio, and the sixth static pressure parameter and the second ratio is taken as the static pressure of the duct.

[0061] 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.

[0062] The formula for calculating the static pressure of the duct is shown in formula (1):

[0063]

[0064]

[0065] Among them, P st For the static pressure of the air duct, P c0 P is the first parameter of static pressure. c1 P is the second parameter of static pressure. c2 P is the third parameter of static pressure. c3 The fourth parameter of static pressure, P c4 P is the fifth parameter of static pressure. c5 The sixth parameter is static pressure, where n is the operating speed. norm Where p is the rated speed, and p is the operating power. norm Rated power, The first ratio, This is the second ratio.

[0066] As can be seen, in this embodiment, the static pressure of the duct can be calculated using static pressure parameters, operating speed, operating power, rated speed, and rated power, which can improve the accuracy of the static pressure calculation for the duct.

[0067] As one embodiment of the present invention, before 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, the above method may further include:

[0068] Obtain the fitted data and the first initial parameters.

[0069] In order to determine the duct static pressure of the indoor fan, fitted data and first initial parameters can be obtained. The fitted data includes fitted speed, fitted power and fitted static pressure, and the first initial parameters are constants preset by the user.

[0070] Based on the fitted rotational speed, the fitted power, and the first initial parameters, the static pressure to be used is determined. The fitted rotational 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.

[0071] The formula for determining the static pressure to be used can be shown in formula (2):

[0072]

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

[0074] Based on the static pressure to be used and the fitted static pressure, the first initial parameter is adjusted to obtain the adjusted first parameter.

[0075] After determining the static pressure to be used 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, adjusting P0, P1, P2, P3, P4, and P5 to obtain the adjusted first parameter.

[0076] If the adjusted first parameter meets the preset first parameter conditions, the adjusted first parameter shall be used as the static pressure parameter.

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

[0078] As can be seen, in this embodiment, the static pressure to be used can be determined by fitting data and the first initial parameter, and then the first initial parameter can be 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 obtain the static pressure of the duct in the future, which can improve the accuracy of obtaining the static pressure of the duct.

[0079] As one embodiment of the present invention, the step of obtaining the target rotational speed based on the duct static pressure and the target air volume may include:

[0080] The target speed is calculated based on the duct static pressure, the pre-acquired air volume parameters, the target air volume, the rated air volume, and the rated speed.

[0081] The air volume parameter is determined based on the second performance curve of the fan, which is obtained by fitting the speed, power, and static pressure. The rated speed is the rated speed of the indoor fan, and the rated air volume is the air volume of the indoor fan when it operates at the rated speed.

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

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

[0086] The formula for calculating the target rotational speed is shown in formula (3):

[0087]

[0088] Where, n st For the objective formula, Q c0 Q is the primary parameter for air volume. c1 Q is the second parameter for air volume. c2 Q is the third parameter for air volume. c3 The fourth parameter for air volume is Q, the target air volume. norm For the rated air volume, n norm Q is the rated speed. c2 P st Q is the first static pressure parameter. c3 P st This is the second static pressure parameter. Q is the first parameter to be used. c1 +Q c3 Pst This is the second parameter to be used. The 100 in the above formula (3) is only set for the convenience of calculation, and can be selected as other values ​​according to the actual use.

[0089] As can be seen, in this embodiment, the target speed can be calculated by using duct static pressure, air volume parameters, target air volume, rated air volume, and rated speed, which can improve the accuracy of the target speed.

[0090] As one embodiment of the present invention, before the step of calculating the target speed based on the duct static pressure, pre-acquired air volume parameters, the target air volume, the rated air volume, and the rated speed, the above method may further include:

[0091] Obtain the fitted data, fitted air volume, and second initial parameters.

[0092] In order to determine the target speed, fitted data, fitted air volume, and a second initial parameter can be obtained. The fitted data includes the fitted speed and fitted static pressure, the fitted air volume includes the fitted target air volume and the fitted rated air volume, and the second initial parameter is a constant preset by the user.

[0093] Based on the fitted rotational speed, the fitted static pressure, and the second initial parameter, the air volume to be used is determined; wherein, the fitted rotational speed includes the fitted operating speed and the fitted rated speed. The formula for determining the air volume to be used can be shown in formula (4):

[0094]

[0095] Among them, Q sy The air volume to be used is given by: Q0 (second initial parameter 0), Q1 (second initial parameter 1), Q2 (second initial parameter 2), Q3 (second initial parameter 3), and m (fitted rotational speed). norm To fit the rated speed, Q norm To fit the rated air volume.

[0096] Based on the air volume to be used and the fitted air volume, the second initial parameter is adjusted to obtain the adjusted second parameter.

[0097] After determining the air volume to be used using 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, which is to adjust Q0, Q1, Q2 and Q3 to obtain the adjusted second parameter.

[0098] If the adjusted second parameter meets the preset second parameter conditions, the adjusted second parameter shall be used as the air volume parameter.

[0099] The preset second parameter condition is defined as the condition that the difference between the air volume to be used and the fitted target air volume is lower than a 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 satisfies the preset second parameter condition. Therefore, the adjusted second parameter can be used as the air volume parameter, thus obtaining Q. c0 Q c1 Q c2 Q c3 .

[0100] For example, in Q c0 Q is 13.87. c1 Q is 120.43. c2 Q is 1.51. c3 When the value is 0.76, the above formula (3) can be expressed as formula (5) in a specific example:

[0101]

[0102] As can be seen, in this embodiment, the air volume to be used can be determined by fitting data, fitting air volume, and second initial parameters. Then, the second initial parameters can be adjusted based on the component to be used and the fitting air volume to obtain the air volume parameter. The air volume parameter is used to obtain the target speed in the subsequent process, which can improve the accuracy of obtaining the target speed.

[0103] As one embodiment of the present invention, the above-mentioned step of obtaining the target air volume may include:

[0104] Receive adjustment commands, which are instructions from users to adjust the air conditioner's operating mode according to their actual usage needs.

[0105] Acquire scene information, which includes at least one of the following: temperature information within a preset operating range of the air conditioner, user status information, and object information. User status information indicates whether the user is in a state significantly affected by the air conditioner.

[0106] For example, users are more likely to catch a cold while sleeping; therefore, user status information could indicate whether the user is sleeping. Similarly, elderly users are more susceptible to cold; therefore, user status information could indicate whether an elderly user is near an air conditioner vent. Specific settings can be configured according to the actual needs of different users, and no specific limitations are made here.

[0107] The target airflow is determined based on the adjustment instructions and scenario information.

[0108] There are several ways to determine the target air volume:

[0109] The first method, when the scene information only includes temperature information, can obtain the difference between the adjustment temperature corresponding to the adjustment command and the ambient temperature represented by the temperature information, and then determine the corresponding target air volume based on the pre-set correspondence between the difference and the air volume.

[0110] The second method, when the scene information only includes user status information, can determine the corresponding target airflow based on the user status information and the pre-set correspondence between status and airflow. The third method, when the scene information only includes object information, can determine the corresponding target airflow based on the object information and the correspondence between object and airflow.

[0111] For example, if there is an obstruction within the first preset distance of the air conditioner, a higher target airflow can be selected. Conversely, if there are easily tipped-over items within the second preset distance of the air conditioner vent, a lower target airflow can be selected.

[0112] When the scene information includes temperature information and user status information, the target airflow can be determined using the first and second methods described above. If the target airflow determined by the two methods is consistent, the target airflow used to calculate the target speed can be obtained. If the target airflow determined by the two methods is inconsistent, the target airflow used to calculate the target speed can be determined based on the pre-set temperature and user weights.

[0113] When the scene information includes user status information and object information, the target airflow can be determined using the second and third methods described above. If the target airflow determined by the two methods is consistent, the target airflow used to calculate the target speed can be obtained. If the target airflow determined by the two methods is inconsistent, the target airflow used to calculate the target speed can be determined based on the pre-set object-user weights.

[0114] When the scene information includes temperature and object information, the target airflow can be determined using the first and third methods described above. If the target airflow determined by the two methods is consistent, the target airflow used to calculate the target speed can be obtained. If the target airflow determined by the two methods is inconsistent, the target airflow used to calculate the target speed can be determined based on the pre-set temperature and object weights.

[0115] When the scene information includes temperature information, user status information, and object information, the target airflow can be determined using the first, second, and third methods described above. If the target airflow determined by the three methods is consistent, the target airflow used to calculate the target speed can be obtained. If the target airflow determined by the three methods is inconsistent, the target airflow used to calculate the target speed can be determined based on the pre-set temperature, user, and object weights.

[0116] As can be seen, in this embodiment, the target air volume can be determined based on the adjustment command and scene information, so that a more accurate target speed can be obtained subsequently, thereby improving the user experience.

[0117] The constant air volume operation device for indoor fans provided by the present invention will be described below. The constant air volume operation device for indoor fans described below can be referred to in correspondence with the constant air volume operation method for indoor fans described above.

[0118] like Figure 2 As shown, this embodiment of the invention provides a constant air volume operation device for an indoor fan, the device comprising:

[0119] The first acquisition module 210 is used to acquire 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 operating power;

[0120] The second acquisition module 220 is used to acquire the target rotational speed based on the duct static pressure and the target air volume;

[0121] The adjustment module 230 is used to adjust the operating speed to the target speed.

[0122] As one embodiment of the present invention, the first acquisition module 210 may include:

[0123] The first acquisition unit is used to calculate 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.

[0124] As one embodiment of the present invention, the above-mentioned apparatus may further include:

[0125] The third acquisition module is used to acquire fitting data and first initial parameters before 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. The fitting data includes the fitted speed, the fitted power, and the fitted static pressure.

[0126] The static pressure determination module is used to determine the static pressure to be used based on the fitted rotational speed, the fitted power, and the first initial parameters.

[0127] The first parameter adjustment module is used to adjust the first initial parameter based on the static pressure to be used and the fitted static pressure to obtain the adjusted first parameter;

[0128] The static pressure parameter determination module is used to use the adjusted first parameter as the static pressure parameter when the adjusted first parameter meets the preset first parameter conditions.

[0129] As one embodiment of the present invention, 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.

[0130] The aforementioned first acquisition unit is specifically used to take the sum of the products of the first static pressure parameter, the second static pressure parameter and the first ratio, the third static pressure parameter and the square of the first ratio, the fourth static pressure parameter and the first ratio and the second ratio, the fifth static pressure parameter and the square of the first ratio and the second ratio, and the sixth static pressure parameter and the second ratio as the static pressure of the duct, 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.

[0131] As one embodiment of the present invention, the second acquisition module 220 includes:

[0132] The second acquisition unit is used to calculate 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.

[0133] As one embodiment of the present invention, the above-mentioned apparatus may further include:

[0134] The fourth acquisition module is used to acquire fitting data, fitting air volume, and a second initial parameter before calculating the target speed based on the duct static pressure, pre-acquired air volume parameters, the target air volume, rated air volume, and rated speed. The fitting data includes the fitting speed and the fitting static pressure.

[0135] The air volume determination module is used to determine the air volume to be used based on the fitted rotational speed, the fitted static pressure, and the second initial parameter.

[0136] 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 the adjusted second parameter.

[0137] The air volume parameter determination module is used to use the adjusted second parameter as the air volume parameter when the adjusted second parameter meets the preset second parameter conditions.

[0138] As one embodiment of the present invention, 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. The second acquisition unit is specifically used to take 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, 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.

[0139] 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.

[0140] The target speed is determined based on the first parameter to be used, the second parameter to be used, and the rated speed.

[0141] Figure 3 An example is a schematic diagram of the physical structure of an indoor fan of an air conditioner, such as... Figure 3 As shown, the indoor fan may include a processor 310, a communication interface 320, a memory 330, and a communication bus 340. The processor 310, communication interface 320, and memory 330 communicate with each other via the communication bus 340. The processor 310 can call logic instructions in the memory 330 to execute a constant airflow operation method for the indoor fan. This method includes: acquiring the duct static pressure and the target airflow, wherein the duct static pressure is the static pressure obtained based on the operating speed and operating power; acquiring the target speed based on the duct static pressure and the target airflow; and adjusting the operating speed to the target speed.

[0142] Furthermore, the logical instructions in the aforementioned memory 330 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0143] On the other hand, the present invention also provides a computer program product, which includes a computer program that 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 for an indoor fan provided by the above methods. The method includes: obtaining duct static pressure and target air volume, wherein the duct static pressure is static pressure obtained based on the operating speed and operating power; obtaining the target speed based on the duct static pressure and target air volume; and adjusting the operating speed to the target speed.

[0144] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When executed by a processor, the computer program implements a constant air volume operation method for an indoor fan provided by the above methods. The method includes: acquiring duct static pressure and a target air volume, wherein the duct static pressure is static pressure obtained based on the operating speed and operating power; acquiring a target speed based on the duct static pressure and the target air volume; and adjusting the operating speed to the target speed.

[0145] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0146] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for constant air volume operation of an indoor fan, characterized in that, The method includes: The method involves obtaining duct static pressure and target air volume, wherein the duct static pressure is obtained based on the operating speed and operating power; the step of obtaining duct static pressure includes: calculating the duct static pressure based on pre-obtained static pressure parameters, the operating speed, the operating power, the rated speed, and the rated power. The target rotational speed is obtained based on the duct static pressure and the target air volume; Adjust the operating speed to the target speed; 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 the duct static pressure based on pre-acquired static pressure parameters, operating speed, operating power, rated speed, and rated power includes: The sum of the products of the first static pressure parameter, the second static pressure parameter and the first ratio, the third static pressure parameter and the square of the first ratio, the fourth static pressure parameter and the first and second ratios, the fifth static pressure parameter and the square of the first and second ratios, and the sixth static pressure parameter and the second ratio is taken as the static pressure of the duct. 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.

2. The constant air volume operation method for an indoor fan according to claim 1, characterized in that, Before the step of calculating the duct static pressure based on pre-acquired static pressure parameters, the operating speed, the operating power, the rated speed, and the rated power, the method further includes: Obtain fitting data and first initial parameters, wherein the fitting data includes fitting rotational speed, fitting power, and fitting static pressure; Based on the fitted rotational speed, the fitted power, and the first initial parameters, the static pressure to be used is determined; Based on the static pressure to be used and the fitted static pressure, the first initial parameter is adjusted to obtain the adjusted first parameter; If the adjusted first parameter meets the preset first parameter conditions, the adjusted first parameter shall be used as the static pressure parameter.

3. The constant air volume operation method for an indoor fan according to claim 1 or 2, characterized in that, The step of obtaining the target rotational speed based on the duct static pressure and the target air volume includes: The target speed is calculated based on the duct static pressure, the pre-acquired air volume parameters, the target air volume, the rated air volume, and the rated speed.

4. The constant air volume operation method for an indoor fan according to claim 3, characterized in that, Before the step of calculating the target speed based on the duct static pressure, pre-acquired air volume parameters, the target air volume, rated air volume, and rated speed, the method further includes: Obtain fitting data, fitting air volume, and second initial parameters, wherein the fitting data includes fitting rotational speed and fitting static pressure; Based on the fitted rotational speed, the fitted static pressure, and the second initial parameter, the air volume to be used is determined; Based on the air volume to be used and the fitted air volume, the second initial parameter is adjusted to obtain the adjusted second parameter; If the adjusted second parameter meets the preset second parameter conditions, the adjusted second parameter shall be used as the air volume parameter.

5. The constant air volume operation method for an indoor fan according to claim 4, characterized in that, 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 rotational speed based on the duct static pressure, pre-acquired airflow parameters, the target airflow, rated airflow, and rated rotational speed includes: 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. The target speed is determined based on the first parameter to be used, the second parameter to be used, and the rated speed.

6. A constant air volume operation device for an indoor fan, characterized in that, The apparatus for performing the constant air volume operation method of an indoor fan as described in any one of claims 1 to 5, the apparatus comprising: The first acquisition module is used to acquire the duct static pressure and target air volume, wherein the duct static pressure is static pressure acquired based on the operating speed and operating power; The second acquisition module is used to acquire the target rotational speed based on the duct static pressure and the target air volume; An adjustment module is used to adjust the operating speed to the target speed.

7. An air conditioner, comprising an indoor fan, the indoor fan including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the constant air volume operation method for the indoor fan as described in any one of claims 1 to 5.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the constant air volume operation method for the indoor fan as described in any one of claims 1 to 5.

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