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

Abstract

The invention provides a constant-air-volume operation method and device of an indoor fan, an air conditioner and a storage medium, the air pipe static pressure and the target air volume are obtained, the air pipe static pressure is the static pressure obtained based on the operation rotating speed and the operation power, the target rotating speed is obtained based on the air pipe static pressure and the target air volume, and the operation rotating speed is adjusted to be the target rotating speed. Thus, debugging personnel do not need to manually set the static pressure, the corresponding air pipe static pressure can be obtained based on the operation rotating speed and the operation power, equivalently, the air pipe static pressure can be automatically matched according to different air pipe lengths, manpower and time are saved, and errors caused by manual adjustment can be avoided. Therefore, the problem that the air outlet effect of the indoor fan is poor due to improper design or installation errors of an air pipe of the indoor fan can be avoided, it can be guaranteed that the indoor fan operates in a constant air volume mode under the condition that the target air volume is not changed, the air outlet effect of the indoor fan is guaranteed, and the use experience of a user is improved.

Description

Technical Field

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

[0002] At present, in the process of static pressure debugging of the DC air duct of the indoor fan of the air conditioner, since the air duct lengths corresponding to different air conditioners are not the same, on-site debugging personnel are required to manually adjust the static pressure of the air duct of the indoor fan for different air conditioners by means of static pressure dial codes. If the on-site debugging personnel set the dial code incorrectly, the indoor fan will not be able to reach the optimal operating state.

[0003] It can be seen that the current static pressure debugging of the air duct of the indoor fan of the air conditioner has the disadvantages of being time-consuming, labor-intensive, having a high error rate, and having high requirements for debugging personnel. As a result, there will be problems with poor air output of the indoor fan due to improper air duct design or installation errors. Summary of the invention

[0004] The present invention provides a constant air volume operation method, device, air conditioner and storage medium of an indoor fan, which are used to solve the shortcomings of the prior art, such as time-consuming, manpower-consuming, high error rate and high requirements for debugging personnel, and the problem of poor air outlet effect of the indoor fan due to improper air duct design or installation error of the indoor fan, thereby saving manpower, saving time and avoiding errors caused by manual adjustment. Furthermore, the problem of poor air outlet effect of the indoor fan due to improper air duct design or installation error of the indoor fan is avoided.

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

[0006] 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;

[0007] Based on the air duct static pressure and the target air volume, obtaining a target rotation speed;

[0008] The operating speed is adjusted to the target speed.

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

[0010] 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.

[0011] According to a constant air volume operation method of an indoor fan provided by the present invention, 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:

[0012] 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;

[0013] Determining a static pressure to be used based on the fitted rotational speed, the fitted power and the first initial parameter;

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

[0015] When the adjusted first parameter satisfies a preset first parameter condition, the adjusted first parameter is used as the static pressure parameter.

[0016] According to a constant air volume operation method of an indoor fan provided by the present invention, the 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;

[0017] 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:

[0018] 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 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.

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

[0020] 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.

[0021] According to a constant air volume operation method of an indoor fan provided by the present invention, 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 further includes:

[0022] 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;

[0023] Determining the air volume to be used based on the fitted rotation speed, the fitted static pressure and the second initial parameter;

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

[0025] When the adjusted second parameter meets the preset second parameter condition, the adjusted second parameter is used as the air volume parameter.

[0026] According to a constant air volume operation method of an indoor fan provided by the present invention, 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 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:

[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] A 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] 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;

[0033] A second acquisition module, configured to acquire a target rotation speed based on the duct static pressure and the target air volume;

[0034] The regulating module is used to regulate the operating speed to the target speed.

[0035] The present invention also provides an air conditioner, comprising an indoor fan, wherein the indoor fan comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein 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.

[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 any of the above-described constant air volume operation methods for an indoor fan.

[0037] The constant air volume operation method, device, air conditioner and storage medium of the indoor fan provided by the present invention 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 the operating power, and obtain the target speed based on the duct static pressure and the target air volume, and adjust the operating speed to the target speed.

[0038] In this way, there is no need for the debugging personnel to manually set the static pressure. Instead, the corresponding duct static pressure can be obtained based on the operating speed and operating power, which is equivalent to automatically matching the duct static pressure according to different duct lengths, saving manpower, saving time, and avoiding errors caused by manual adjustment. Furthermore, the problem of poor air outlet effect of the indoor fan due to improper duct design or installation errors of the indoor fan can be avoided. When the target air volume remains unchanged, the indoor fan can be guaranteed to operate in a constant air volume mode, ensuring the air outlet effect of the indoor fan and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 It is a flow chart of a constant air volume operation method of an indoor fan provided by the present invention;

[0041] Figure 2 It is a structural schematic diagram of a constant air volume operation device of an indoor fan provided by the present invention;

[0042] Figure 3 It is a structural schematic diagram of the indoor fan provided by the present invention. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In order to save manpower, save time, reduce the error rate, and ensure the air output effect of the indoor fan, the embodiments of the present invention provide a method, device, air conditioner, non-transitory computer-readable storage medium and computer program product for constant air volume operation of the indoor fan. Figure 1 A constant air volume operation method of an indoor fan provided in an embodiment of the present invention is introduced.

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

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

[0047] In order to ensure the air outlet effect of the indoor unit of the corresponding air conditioner according to the air duct of different indoor fans, the duct static pressure and target air volume of the indoor fan can be obtained in real time when the air conditioner is running. The duct static pressure is the static pressure obtained based on the operating speed and operating power. The target air volume can be set by the user according to his own usage needs.

[0048] S102: Obtain a target rotation speed based on the duct static pressure and the target air volume.

[0049] After obtaining the duct static pressure and target air volume, the target speed can be obtained based on the duct static pressure and the 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] When a first fan performance curve determined by fitting the rotation speed and fitting the power is obtained, the duct static pressure may be determined based on the first fan performance curve, the operating rotation speed, and the operating power.

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

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

[0053] 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, thereby realizing real-time adjustment of the operating speed of the indoor fan.

[0054] It can be seen that in this embodiment, the debugging personnel do not need to manually set the static pressure, but can obtain the corresponding duct static pressure based on the operating speed and operating power, which is equivalent to automatically matching the duct static pressure according to different duct lengths, saving manpower, saving time, and avoiding errors caused by manual adjustment. Furthermore, the problem of poor air outlet effect of the indoor fan due to improper duct design or installation error of the indoor fan can be avoided. When the target air volume remains unchanged, the indoor fan can be guaranteed to operate in a constant air volume mode, ensuring the air outlet effect of the indoor fan and improving the user experience.

[0055] That is to say, a constant air volume operation method of an indoor fan provided in an embodiment of the present invention can realize digital constant air volume fan control. During installation, there is no need to use a controller or an indoor unit dial 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 air duct, thereby realizing automatic matching of the static pressure.

[0056] As an implementation of an embodiment of the present invention, the step of obtaining the duct static pressure may include:

[0057] 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.

[0058] The static pressure parameter is a parameter determined based on the first fan performance curve determined by fitting the speed and fitting the 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 corresponding to the indoor fan, and the rated power is the operating power corresponding to the indoor fan when it is running at the 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 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 may include:

[0060] 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 taken as the duct static pressure.

[0061] 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 above formula for calculating the static pressure of the duct can be shown as formula (1):

[0063]

[0064]

[0065] 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.

[0066] 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.

[0067] As an implementation manner of an embodiment of the present invention, 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:

[0068] Get the fitting data and the first initial parameters.

[0069] 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 a fitting speed, a fitting power and a fitting static pressure, and the first initial parameter is a constant preset by the user.

[0070] The static pressure to be used is determined based on the fitting speed, the fitting power and the first initial parameter, wherein the fitting speed includes the fitting operating speed and the fitting rated speed, and the fitting power includes the fitting operating power and the fitting rated power.

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

[0072]

[0073] Among them, P sy is the static pressure to be used, P 0 is the first initial parameter 0, P 1 is the first initial parameter 1, P 2 is the first initial parameter 2, P 3 is the first initial parameter 3, P 4 The first initial parameters 4 and P 5 is the first initial parameter 5, m is the fitting speed, m norm To fit the rated speed, p a is the fitted power, p anorm To fit the rated power.

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

[0075] After the static pressure to be used is determined by 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. 0 , P 1 , P 2 , P 3 , P 4 , P 5 An adjustment is performed to obtain the adjusted first parameter.

[0076] When the adjusted first parameter satisfies a 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 the 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 satisfies 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 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 for subsequent acquisition of the duct static pressure, which can improve the accuracy of obtaining the duct static pressure.

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

[0080] 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.

[0081] The air volume parameter is a parameter determined based on the second fan performance curve determined by fitting the speed, fitting the power and fitting the 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 when running 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 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 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] A target speed is determined based on the first parameter to be used, the second parameter to be used, and the rated speed.

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

[0087]

[0088] Among them, n st is the target formula, Q c0 Q is the first parameter of air volume, c1 Q is the second parameter of air volume. c2 Q is the third parameter of air volume, c3 The fourth parameter of air volume, Q target air volume, Q normis 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 st The 100 in the above formula (3) is only set for the convenience of calculation, and other values ​​can be selected according to actual usage.

[0089] It can be seen that in this embodiment, the target speed can be obtained by calculation through the 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 an implementation manner of an embodiment of the present invention, 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:

[0091] Get the fitting data, fitting air volume and the second initial parameter.

[0092] 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.

[0093] 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):

[0094]

[0095] Among them, Q sy is the air volume to be used, Q 0 is the second initial parameter 0, Q 1 is the second initial parameter 1, Q 2 is the second initial parameter 2, Q 3 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.

[0096] 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.

[0097] 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, which is the value of Q 0 , Q 1 , Q 2 , Q 3 Make an adjustment to obtain an adjusted second parameter.

[0098] When the adjusted second parameter meets the preset second parameter condition, the adjusted second parameter is used as the air volume parameter.

[0099] 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 .

[0100] 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:

[0101]

[0102] 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 for subsequent acquisition of the target speed, which can improve the accuracy of obtaining the target speed.

[0103] As an implementation of an embodiment of the present invention, the step of obtaining the target air volume may include:

[0104] An adjustment instruction is received, wherein the adjustment instruction is an instruction for a user to adjust an air-conditioning operation mode according to actual usage requirements.

[0105] Acquire scene information, wherein the scene information is at least one of temperature information, user status information, and object information corresponding to a preset range of air conditioner operation. The user status information is information indicating whether the user is in a state greatly affected by the air conditioner.

[0106] For example, when a user is sleeping, the probability of catching a cold is relatively high, so the user status information may be information indicating whether the user is sleeping. For another example, elderly users are more likely to catch a cold, so the user status information may be information indicating whether the elderly user is located at the air outlet of the air conditioner. The specific setting may be based on the actual usage needs of different users, and is not specifically limited here.

[0107] Determine the target air volume based on the adjustment instructions and scene information.

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

[0109] 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 preset correspondence between the difference and the air volume.

[0110] In the second way, when the scene information only includes user status information, the corresponding target air volume can be determined according to the user status information and the correspondence between the preset state and the air volume. In the third way, when the scene information only includes object information, the corresponding target air volume can be determined according to the object information and the correspondence between the object and the air volume.

[0111] 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 an easily fallen object within the second preset distance of the air outlet of the air conditioner, a lower target air volume can be selected.

[0112] In the case where the scene information includes temperature information and user status information, the target air volume can be determined by the first method and the second method respectively. 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 preset temperature user weight.

[0113] In the case where the scene information includes user status information and object information, the second method and the third method mentioned above can be used to determine the target air volume respectively. 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 preset object user weight.

[0114] In the case where the scene information includes temperature information and object information, the target air volume can be determined by the first method and the third method respectively. 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 preset temperature object weight.

[0115] In the case where the scene information includes temperature information, user status information and object information, the target air volume can be determined by the first method, the second method and the third method respectively. If the target air volumes determined by the three methods are consistent, the target air volume for subsequent calculation of the target speed can be obtained. If the target air volumes determined by the three methods are inconsistent, the target air volume for subsequent calculation of the target speed can be determined according to the preset temperature user object weights.

[0116] 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 rotation speed can be obtained later, thereby improving the user experience.

[0117] The constant air volume operation device of the indoor fan provided by the present invention 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.

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

[0119] A first acquisition module 210 is used to acquire the duct static pressure and target air volume, wherein the duct static pressure is the static pressure acquired based on the operating speed and the operating power;

[0120] A second acquisition module 220, configured to acquire a target rotation 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 an implementation of an embodiment of the present invention, the first acquisition module 210 may include:

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

[0124] As an implementation of the embodiment of the present invention, the above device may further include:

[0125] 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 a fitting speed, a fitting power and a fitting 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 parameter.

[0127] A first parameter adjustment module, 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;

[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 condition.

[0129] As an implementation manner of the embodiment of the present invention, 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.

[0130] 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 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 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.

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

[0132] 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.

[0133] As an implementation of the embodiment of the present invention, the above device may further include:

[0134] The fourth acquisition module is used to obtain fitting data, fitting air volume and a second initial parameter 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.

[0135] 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.

[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 an 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 condition.

[0138] As an implementation of an embodiment of the present invention, the air volume parameter includes 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 use 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 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;

[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] A 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 of a schematic diagram of the physical structure of an indoor fan of an air conditioner is shown in FIG. Figure 3 As shown, the indoor fan may include: a processor 310, a communication interface 320, a memory 330 and a communication bus 340, wherein the processor 310, the communication interface 320 and the memory 330 communicate with each other through the communication bus 340. The processor 310 may call the logic instructions in the memory 330 to execute the constant air volume operation method of the indoor fan, the method comprising: 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.

[0142] 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 it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, 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, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0143] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program 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-mentioned methods, and 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.

[0144] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the constant air volume operation method of the indoor fan provided by the above-mentioned methods, the method comprising: 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.

[0145] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0146] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for operating an indoor fan at a constant air volume, characterized in that: The method comprises: 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, characterized in that: The step of obtaining the duct static pressure includes: 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, characterized in that: 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: 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, characterized in that: 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 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.

5. The constant air volume operation method of the indoor fan according to any one of claims 1 to 4, characterized in that: The step of obtaining the target rotation speed based on the air duct static pressure and the target air volume comprises: 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, characterized in that: 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 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, 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 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, characterized in that: The device comprises: 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, wherein: 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, characterized in that: 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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