Stepless constant air volume control method and system, electronic equipment and storage medium

Abstract

The invention provides a stepless constant air volume control method and system, electronic equipment and a storage medium, is suitable for an air conditioner, and periodically collects a current power value and a current rotating speed of the air conditioner; determining a first air volume value group according to a preset air pressure value group and the current rotating speed; the preset air pressure value group comprises a plurality of preset air pressure values, and the first air volume value group comprises a first air volume value corresponding to each preset air pressure value; determining a second air volume value group according to a preset air pressure value group and the current power value; the second air volume value group comprises a second air volume value corresponding to each preset air pressure value; determining an actual air pressure value of the air conditioner according to the first air volume value and the second air volume value corresponding to each preset air pressure value, and determining an actual air volume value of the air conditioner according to the actual air pressure value; determining a target rotating speed of the air conditioner according to the actual air pressure value, the current actual air volume value and the target air volume value; and if the target rotating speed is not consistent with the current rotating speed, adjusting the rotating speed of the air conditioner according to the target rotating speed to enable the air volume value output by the air conditioner to approach the target air volume value.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to a stepless constant air volume control method, system, electronic device, and storage medium. Background Technology

[0002] With the continuous development of society, people are increasingly demanding higher standards for comfort and energy conservation in their living environments in order to further improve their quality of life. As an important air temperature regulating appliance, air conditioners are also subject to increasingly higher requirements, especially regarding the control of constant airflow. The control of constant airflow in air conditioners allows them to maintain a constant output of air, ensuring comfortable ventilation in the corresponding environment.

[0003] In existing technologies, sensors can be used to measure airflow and compare the deviation between the measured airflow and the target airflow, so that the corresponding fan system can be adjusted and controlled in real time to output a constant airflow based on the deviation. However, due to the low accuracy of sensors and their susceptibility to factors such as installation location, uneven airflow, orientation, and blockage, the measured airflow may be inaccurate, making it impossible to accurately control the constant airflow.

[0004] To address the aforementioned issues, existing technologies employ sensorless constant airflow control methods. Specifically, fixed airflow values ​​or speed levels can be preset, and constant airflow control can be achieved by adjusting these values ​​or speed levels. However, this method can only achieve constant airflow control for a few preset airflow values ​​or speed levels and cannot be adjusted according to actual needs and circumstances, resulting in a poor user experience. Summary of the Invention

[0005] In view of this, the present invention provides a stepless constant air volume control method, system, electronic device and storage medium to solve the problems in the prior art where the measured air volume is inaccurate, resulting in the inability to accurately control the constant air volume and the inability to adjust it according to actual needs and situations, leading to a poor user experience.

[0006] The first aspect of this application provides a stepless constant air volume control method, applicable to air conditioning, the method comprising:

[0007] The current power value and current speed of the air conditioner are periodically collected;

[0008] A first airflow value group is determined based on a preset air pressure value group and the current rotation speed; wherein, the preset air pressure value group includes multiple preset air pressure values, and the first airflow value group includes a first airflow value corresponding to each preset air pressure value;

[0009] A second airflow value group is determined based on the preset wind pressure value group and the current power value; wherein, the second airflow value group includes a second airflow value corresponding to each preset wind pressure value;

[0010] The actual air pressure value of the air conditioner is determined based on the first air volume value and the second air volume value corresponding to each preset air pressure value, and the actual air volume value of the air conditioner is determined based on the actual air pressure value.

[0011] The target speed of the air conditioner is determined based on the actual wind pressure value, the current actual air volume value, and the target air volume value.

[0012] If the target speed is inconsistent with the current speed, the speed of the air conditioner is adjusted according to the target speed so that the air volume output by the air conditioner approaches the target air volume value.

[0013] Optionally, determining the first airflow value group based on the preset wind pressure value group and the current rotation speed includes:

[0014] Obtain the pre-set preset wind pressure value group;

[0015] For each preset wind pressure value in the preset wind pressure value group, a target air volume-speed model matching the preset wind pressure value is determined from each pre-constructed air volume-speed model; wherein each air volume-speed model is an air volume-speed fitting function generated from each first wind pressure characteristic curve obtained by fitting the speed-air volume test data.

[0016] Substitute the current rotation speed into the target air volume-rotation speed model that matches the preset air pressure value to calculate the first air volume value corresponding to the preset air pressure value.

[0017] The first air volume values ​​corresponding to each of the preset wind pressure values ​​are grouped into a first air volume value group.

[0018] Optionally, determining the second airflow value group based on the preset wind pressure value group and the current power value includes:

[0019] For each preset wind pressure value in the preset wind pressure value group, a target air volume-power model matching the preset wind pressure value is determined from each pre-constructed air volume-power model; wherein each air volume-power model is an air volume-power fitting function generated from each second wind pressure characteristic curve obtained by fitting power-air volume test data.

[0020] Substitute the current power value into the target air volume-power model that matches the preset wind pressure value to calculate the second air volume value corresponding to the preset wind pressure value.

[0021] The second air volume values ​​corresponding to each of the preset wind pressure values ​​are grouped into a second air volume value group.

[0022] Optionally, determining the actual air pressure value of the air conditioner based on the first air volume value and the second air volume value corresponding to each of the preset air pressure values ​​includes:

[0023] For each preset wind pressure value, calculate the air volume difference between the first air volume value and the second air volume value corresponding to the preset wind pressure value;

[0024] The target air volume difference is selected from the absolute values ​​of the air volume differences corresponding to each preset wind pressure value;

[0025] The preset air pressure value corresponding to the target air volume difference is determined as the actual air pressure value of the air conditioner.

[0026] Optionally, determining the actual air volume value of the air conditioner based on the actual wind pressure value includes:

[0027] Determine the air volume-speed model that matches the actual air pressure value from various pre-built air volume-speed models;

[0028] The actual air volume value of the air conditioner is obtained by substituting the current rotation speed into the air volume-rotation speed model that matches the actual air pressure value.

[0029] Optionally, determining the target speed of the air conditioner based on the actual wind pressure value, the actual air volume value, and the target air volume value includes:

[0030] Calculate the quotient of the target air volume value and the actual air volume value, and calculate the square of the quotient of the target air volume value and the actual air volume value;

[0031] The target air pressure value of the air conditioner is determined based on the current air pressure value and the square of the quotient of the target air volume value and the actual air volume value.

[0032] Determine the airflow-speed model that matches the target air pressure value from among the various pre-built airflow-speed models;

[0033] The target air volume value is substituted into the air volume-speed model that matches the target air pressure to calculate the target speed of the air conditioner.

[0034] Optionally, determining the target air pressure value of the air conditioner based on the current air pressure value and the square of the quotient of the target air volume value and the actual air volume value includes:

[0035] Calculate the product of the current wind pressure value and the square of the quotient of the target air volume value and the actual air volume value;

[0036] Determine whether the product is within the preset wind pressure range;

[0037] If the product is within the preset air pressure range and the product is an integer, the product is determined as the target air pressure value of the air conditioner;

[0038] If the product is within the preset wind pressure range and the product is not an integer, the product is rounded down to obtain the target wind pressure value of the air conditioner.

[0039] A second aspect of this application provides a stepless constant air volume control system, applicable to air conditioning, the system comprising:

[0040] A periodic acquisition unit is used to periodically acquire the current power value and current speed of the air conditioner;

[0041] The first determining unit is configured to determine a first airflow value group based on a preset air pressure value group and the current rotation speed; wherein the preset air pressure value group includes multiple preset air pressure values, and the first airflow value group includes a first airflow value corresponding to each preset air pressure value;

[0042] The second determining unit is used to determine a second airflow value group based on the preset wind pressure value group and the current power value; wherein, the second airflow value group includes a second airflow value corresponding to each preset wind pressure value;

[0043] The third determining unit is used to determine the actual air pressure value of the air conditioner based on the first air volume value and the second air volume value corresponding to each of the preset air pressure values, and to determine the actual air volume value of the air conditioner based on the actual air pressure value.

[0044] The fourth determining unit is used to determine the target speed of the air conditioner based on the actual wind pressure value, the current actual air volume value, and the target air volume value.

[0045] An adjustment unit is used to adjust the speed of the air conditioner according to the target speed if the target speed is inconsistent with the current speed, so that the air volume value output by the air conditioner approaches the target air volume value.

[0046] A third aspect of this application provides an electronic device, comprising: a processor and a memory, the processor and the memory being connected via a communication bus; wherein the processor is configured to call and execute a program stored in the memory; the memory is configured to store the program, the program being configured to implement the stepless constant airflow control method provided in the first aspect of this application.

[0047] The fourth aspect of this application provides a computer-readable storage medium storing computer-executable instructions for performing the stepless constant airflow control method provided in the fourth aspect of this application.

[0048] This invention provides a stepless constant airflow control method, system, electronic device, and storage medium. The method periodically collects the current power value and current speed of an air conditioner; determines a first airflow value group based on a preset air pressure value group and the current speed; wherein the preset air pressure value group includes multiple preset air pressure values, and the first airflow value group includes a first airflow value corresponding to each preset air pressure value; determines a second airflow value group based on the preset air pressure value group and the current power value; wherein the second airflow value group includes a second airflow value corresponding to each preset air pressure value; determines the current actual air pressure value of the air conditioner based on the first and second airflow values ​​corresponding to each preset air pressure value, and determines the actual airflow value of the air conditioner based on the actual air pressure value; determines the target speed of the air conditioner based on the current air pressure value, the current actual airflow value, and the target airflow value; if the target speed is inconsistent with the current speed, adjusts the air conditioner speed according to the target speed so that the airflow value output by the air conditioner approaches the target airflow value. The technical solution provided in this application determines the first and second airflow values ​​for each preset air pressure value by using preset air pressure value groups and the current air conditioner speed and power value. Then, the actual air pressure and airflow values ​​of the air conditioner can be determined using these preset air pressure value groups and power values, eliminating the need for sensor measurements. This avoids inaccurate airflow measurements due to factors such as installation location, uneven airflow, orientation, and blockages, which could prevent precise constant airflow control. Furthermore, the actual airflow value of the air conditioner is determined based on its current power and speed. The target speed of the air conditioner is then determined based on the current air pressure value, the actual airflow value, and the target airflow value. The air conditioner speed is adjusted according to this target speed to maintain a constant airflow output. This solution further addresses the problem of adjustment based on actual needs and conditions in existing technologies, thereby improving the user experience. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of the present 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 only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0050] Figure 1 A flowchart illustrating a stepless constant air volume control method provided in this application embodiment;

[0051] Figure 2 An example diagram showing how to generate an airflow-speed fitting function under different wind pressures by fitting a first wind pressure characteristic curve obtained from fitting rotational speed-airflow data at different wind pressures, as provided in an embodiment of this application.

[0052] Figure 3 An example diagram illustrating the generation of airflow-power fitting functions under different wind pressures from a first wind pressure characteristic curve obtained by fitting power-airflow data at different wind pressures, as provided in an embodiment of this application.

[0053] Figure 4 An example diagram showing how the resistance curve of a duct changes from a low resistance curve to a high resistance curve, provided in an embodiment of this application;

[0054] Figure 5 An example diagram illustrating the airflow achievement rate provided in this application embodiment;

[0055] Figure 6 An example diagram illustrating a stepless constant air volume control method provided in this application embodiment;

[0056] Figure 7 This is a schematic diagram of a stepless constant air volume control system provided in an embodiment of the present invention;

[0057] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] In this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0060] See Figure 1 The diagram shows a flowchart of a stepless constant air volume control method provided in an embodiment of this application. This stepless constant air volume control method is adapted to air conditioning and specifically includes the following steps:

[0061] S101: Periodically collect the current power value and current speed of the air conditioner.

[0062] In the specific execution of step S101, after the air conditioner is turned on, it can be controlled to run at the initial speed. That is, when the air conditioner is first turned on, it runs at the initial speed. That is, when it first enters the stepless constant air volume control, the current speed of the air conditioner can be determined as the initial speed, and the current power value of the air conditioner is the actual power value of the air conditioner currently running. If the air conditioner has been running for a period of time, then the current speed of the air conditioner collected in the current cycle can be the target speed used when adjusting the speed of the air conditioner during the stepless constant air volume control in the previous cycle, and the current power value of the air conditioner is the actual power value of the air conditioner currently running.

[0063] It should be noted that the initial speed and time interval T can be preset so that after entering the stepless constant air volume control, the current power value and current speed of the air conditioner are re-acquired at every time interval T. The specific values ​​of the initial speed and time interval T can be set according to the actual application, and are not limited in this embodiment.

[0064] It should also be noted that when the air conditioner is detected to have just been turned on, the current power value and current speed of the air conditioner can be collected. This data can be used to complete the first cycle of stepless constant air volume control. The running time of the air conditioner can then be timed. When the timed period equals the preset time interval T, the current power value and current speed of the air conditioner can be collected again to achieve the purpose of periodically collecting the current power value and current speed of the air conditioner.

[0065] S102: Determine the first air volume value group based on the preset air pressure value group and the current rotation speed; wherein, the preset air pressure value group includes multiple preset air pressure values, and the first air volume value group includes the first air volume value corresponding to each preset air pressure value.

[0066] In this embodiment of the application, the maximum allowable air pressure value of the air conditioner can be obtained in advance so as to set a set of preset air pressure values ​​according to the maximum air pressure value of the air conditioner. The preset air pressure value set includes multiple preset air pressure values ​​arranged in ascending order, and any preset air pressure value is not greater than the maximum air pressure value of the air conditioner.

[0067] For example, assuming the maximum allowable air pressure value for an air conditioner is nPa, then the preset air pressure value set according to the maximum air pressure value of the air conditioner can be (0Pa, 1Pa, ..., nPa), where the difference between any two adjacent preset air pressure values ​​from 0Pa to nPa is 1Pa, and n is a positive integer greater than 1.

[0068] In the specific execution step S102, speed-airflow test data can be collected in advance so that multiple airflow-speed models can be fitted based on the speed-airflow test data. Then, after the current speed of the air conditioner is collected, the first airflow value group can be determined based on the pre-set predicted air pressure value group, the current speed of the air conditioner and the pre-fitted multiple airflow-speed models. The first airflow value group includes the first airflow value corresponding to each preset air pressure value.

[0069] It should be noted that each airflow-speed model is a fitting function of airflow-speed generated from each first air pressure characteristic curve obtained by fitting the speed-airflow test data.

[0070] Optionally, the process of determining the first airflow value group based on the preset air pressure value group and the current rotation speed may specifically include: obtaining a preset air pressure value group; for each preset air pressure value in the preset air pressure value group, determining the target airflow-rotation model matching the preset air pressure value from each pre-constructed airflow-rotation model; substituting the preset air pressure value and the current rotation speed into the target airflow-rotation model matching the preset air pressure value for calculation to obtain the first airflow value corresponding to the preset air pressure value; and forming the first airflow values ​​corresponding to each preset air pressure value into a first airflow value group.

[0071] In this embodiment, rotational speed-airflow data under different wind pressures can be collected in advance, and rotational speed-airflow test data can be constructed based on the rotational speed-airflow data under different wind pressures. This allows for the fitting of a first wind pressure characteristic curve under different wind pressures based on the constructed rotational speed-airflow test data. Furthermore, the airflow-rotational speed fitting function under different wind pressures can be determined based on the first wind pressure characteristic curve under different wind pressures. Figure 2 As shown.

[0072] It should be noted that, for Figure 2 For each airflow-speed fitting function in the model, y represents the airflow value and x represents the speed. After determining the target airflow-speed fitting function (target airflow-speed model) that matches the preset air pressure value from each airflow-speed fitting function (airflow-speed model), the current speed of the air conditioner can be substituted as x into the target airflow-speed fitting function for calculation, and the first airflow value corresponding to the preset air pressure value can be obtained.

[0073] S103: Determine the second air volume value group based on the preset wind pressure value group and the current power value; wherein, the second air volume value group includes the second air volume value corresponding to each preset wind pressure value.

[0074] In the specific execution of step S13, power-airflow test data can be collected in advance so that multiple airflow-power models can be fitted based on the power-airflow test data. Then, after the current power value of the air conditioner is collected, the second airflow value group can be determined based on the pre-set predicted air pressure value group, the current power value of the air conditioner, and the pre-fitted multiple airflow-power models. The second airflow value group includes the second airflow value corresponding to each preset air pressure value.

[0075] It should be noted that each airflow-power model is a different airflow-power fitting function generated from the different second wind pressure characteristic curves obtained by fitting the power-airflow test data.

[0076] Optionally, the process of determining the second airflow value group based on the preset wind pressure value group and the current power value may specifically include: for each preset wind pressure value in the preset wind pressure value group, determining the target airflow-power model matching the preset wind pressure value from each pre-constructed airflow-power model; wherein, each airflow-power model is an airflow-power fitting function generated from each second wind pressure characteristic curve obtained by fitting power-airflow test data; substituting the current power value into the target airflow-power model matching the preset wind pressure value for calculation to obtain the second airflow value corresponding to the preset wind pressure value; and forming the second airflow values ​​corresponding to each preset wind pressure value into a second airflow value group.

[0077] In this embodiment, power-airflow data under different wind pressures can be collected in advance, and power-airflow test data can be constructed based on the power-airflow data under different wind pressures. This allows for the fitting of a second wind pressure characteristic curve under different wind pressures based on the constructed power-airflow test data. Furthermore, the airflow-power fitting function under different wind pressures can be determined based on the second wind pressure characteristic curve under different wind pressures. Figure 3 As shown.

[0078] It should be noted that, for Figure 3 For each airflow-power fitting function in the model, y represents the airflow value and x represents the power. After determining the target airflow-power fitting function (target airflow-power model) that matches the preset air pressure value from each airflow-power fitting function (airflow-power model), the current power value of the air conditioner can be substituted into the target airflow-power fitting function as x for calculation, and the second airflow value corresponding to the preset air pressure value can be obtained.

[0079] It should be noted that steps S102 and S103 can be executed simultaneously or sequentially, and this embodiment of the application does not limit this.

[0080] S104: Determine the actual air pressure value of the air conditioner based on the first air volume value and the second air volume value corresponding to each preset air pressure value, and determine the actual air volume value of the air conditioner based on the actual air pressure value.

[0081] In the specific execution of step S104, after obtaining the first air volume value and the second air volume value corresponding to each preset air pressure value, the air volume difference between the first air volume value and the second air volume value corresponding to each preset air pressure value can be calculated, and the actual air pressure value of the air conditioner can be determined based on the air volume difference of each preset air volume value, and the actual air volume value of the air conditioner can be determined based on the actual air pressure value of the air conditioner.

[0082] Optionally, the process of determining the actual air pressure value of the air conditioner based on the first air volume value and the second air volume value corresponding to each preset air pressure value can be as follows: for each preset air pressure value, calculate the air volume difference between the first air volume value and the second air volume value corresponding to the preset air pressure value; select the target air volume difference from the absolute values ​​of the air volume differences corresponding to each preset air pressure value; and determine the preset air pressure value corresponding to the target air volume difference as the actual air pressure value of the air conditioner.

[0083] In some embodiments, the airflow difference between the first airflow value and the second airflow value corresponding to each preset air pressure value can be calculated, and the absolute value of the airflow difference between the first airflow value and the second airflow value corresponding to each preset air pressure value can be determined, so that the minimum value among the absolute values ​​of the airflow difference between the first airflow value and the second airflow value corresponding to the preset air pressure value can be determined as the target airflow difference value.

[0084] For example, if the preset airflow value group is (0Pa, 1Pa, ..., nPa), then the absolute value of the airflow difference between the first airflow value and the second airflow value for each preset airflow value from 0Pa to nPa can be calculated, i.e., △Q0 (absolute value of airflow difference at 0Pa) = |QN0 (first airflow value at 0Pa) - QP0 (second airflow value at 0Pa)|, △Q1 (absolute value of airflow difference at 1Pa) = |QN1 (first airflow value at 1Pa) - QP1 (second airflow value at 1Pa)|, ..., △Qn (absolute value of airflow difference at nPa) = |QNn (first airflow value at nPa) - QPn (second airflow value at nPa)|. If the absolute value of the airflow difference from 0Pa to nPa is the smallest at 2Pa, then the absolute value of the airflow difference at 2Pa ​​can be determined as the target airflow difference, and 2Pa can be determined as the current actual air pressure of the air conditioner.

[0085] Optionally, the process of determining the actual air volume value of the air conditioner based on the actual wind pressure value can be as follows: determine the air volume-speed model that matches the actual wind pressure value from the various pre-built air volume-speed models; substitute the current speed into the air volume-speed model that matches the actual wind pressure value for calculation to obtain the actual air volume value of the air conditioner.

[0086] In practical applications, targeting Figure 2 For each airflow-speed fitting function in the model, y represents the airflow value and x represents the speed. Thus, by determining the airflow-speed fitting function (airflow-speed model) that matches the actual air pressure value from each airflow-speed fitting function (airflow-speed model), and substituting the current speed of the air conditioner as x into the airflow-speed fitting function that matches the actual air pressure value for calculation, the actual airflow value corresponding to the actual air pressure value can be obtained.

[0087] S105: Determine the target speed of the air conditioner based on the actual wind pressure value, actual air volume value, and target air volume value.

[0088] During the specific execution of step S105, the desired constant air volume output of the air conditioner can be set according to the actual application (for ease of distinction, the preset constant air volume is called the target air volume value). After obtaining the actual air pressure value and actual air volume value of the air conditioner, the target air pressure value under the target air volume value can be calculated based on the target air volume value, the actual air pressure value and the actual air volume value of the air conditioner. The target speed of the air conditioner can be determined based on the calculated target air pressure value, so that the speed of the air conditioner can be adjusted according to the determined target speed, so that the air conditioner can maintain a constant air volume output.

[0089] It should be noted that users can set the corresponding required air volume (target air volume value) within the specified range, so that the air conditioner speed can be adjusted according to the target speed of the air conditioner determined by the actual air pressure value, actual air volume value and target air volume value. It can adapt to external resistance within a certain range, maintain a constant air volume output of the air conditioner, and is not affected by external conditions such as duct length and number of air outlets.

[0090] It should also be noted that by determining the target air pressure value of the air conditioner at the target air volume value based on the actual situation of the air conditioner (actual air pressure value and actual air volume value), the target speed at the target air volume value can be determined based on the target air pressure value. Finally, the air conditioner speed is adjusted according to the determined target speed, so as to achieve the goal of adjusting the air volume of the air conditioner according to the actual situation of the air conditioner and maintaining a constant air volume output. This can further solve the problem of adjustment based on actual needs and conditions in the prior art, thereby improving the poor user experience. Furthermore, the air conditioning unit using the stepless constant air volume control method provided in this application does not need to budget multiple outlet static pressures at the factory, which can greatly simplify the product lineup, simplify customer selection and installation and commissioning, and also simplify the manufacturer's production planning and inventory management. This not only meets the air volume design requirements at the beginning of use, but also appropriately compensates for the air pressure attenuation caused by filter clogging, etc., thereby ensuring that the product's heat exchange effect is not affected by changes in air volume. In addition, the stepless constant air volume control method provided in this application can also be applied to air conditioners with fresh air systems, which can ensure the fresh air volume; in mixed air operation, the fresh air rate can be accurately controlled.

[0091] Optionally, the process of determining the target speed of the air conditioner based on the actual air pressure value, the actual air volume value, and the target air volume value can be as follows: calculate the quotient of the target air volume value and the actual air volume value, and calculate the square of the quotient of the target air volume value and the actual air volume value; determine the target air pressure value of the air conditioner based on the current air pressure value and the square of the quotient of the target air volume value and the actual air volume value; determine the air volume-speed model matching the target air pressure value from the various pre-built air volume-speed models; substitute the target air volume value into the air volume-speed model matching the target air pressure value for calculation to obtain the target speed of the air conditioner.

[0092] As one implementation of this application, the process of determining the target air pressure value of the air conditioner based on the square of the quotient of the current air pressure value and the target air volume value and the actual air volume value can be as follows: calculate the product of the current air pressure value and the square of the quotient of the target air volume value and the actual air volume value; determine whether the product is within the preset air pressure range; if the product is within the preset air pressure range and the product is an integer, determine the product as the target air pressure value of the air conditioner; if the product is within the preset air pressure range and the product is not an integer, round the product to obtain the target air pressure value of the air conditioner.

[0093] In practical applications, after obtaining the actual air pressure and actual air volume of the air conditioner, the quotient between the target air volume and the actual air volume can be calculated, and the square of the quotient can be calculated. Finally, the product of the actual air pressure and the square of the quotient can be calculated. For ease of distinction, the obtained product can be called the initial air pressure of the air conditioner under the target air volume. The specific calculation method is shown in formula (1).

[0094] s = m(Q / QNm) 2(1)

[0095] Where s is the initial air pressure value of the air conditioner under the target air volume value, m is the actual air pressure value, Q is the target air volume value, and QNm is the actual air volume value.

[0096] It should be noted that if the initial air pressure value obtained is not within the preset air pressure range but is less than the minimum air pressure value within the preset air pressure range, the minimum air pressure value within the preset air pressure range can be used as the target air pressure value of the air conditioner; if the initial air pressure value is not within the preset air pressure range but is greater than the maximum air pressure value within the preset air pressure range, the maximum air pressure value within the preset air pressure range can be used as the target air pressure value of the air conditioner.

[0097] It should also be noted that a preset air pressure range can be set in advance based on the maximum allowable air pressure value of the air conditioner. This setting can be made for practical application, but it is not limited in this embodiment of the application.

[0098] For example, if the maximum allowable air pressure for an air conditioner is nPa, then the preset air pressure range set based on the maximum allowable air pressure nPa can be [0Pa, nPa]. If the initial air pressure value is within [0Pa, nPa] and is an integer, then the initial air pressure value can be directly determined as the target air pressure value for the air conditioner. If the initial air pressure value is within [0Pa, nPa] and is not an integer, then the initial air pressure value can be rounded to obtain the target air pressure value for the air conditioner. If the initial air pressure value is not within [0Pa, nPa] and is less than 0Pa, then 0Pa can be used as the target air pressure value for the air conditioner. If the initial air pressure value is not within [0Pa, nPa] and is greater than nPa, then nPa can be determined as the target air pressure value for the air conditioner.

[0099] S106: Determine whether the target speed of the air conditioner is consistent with the current speed of the air conditioner; if not, proceed to step S107.

[0100] In the embodiments of this application, the applicant has discovered that, given a pre-set target airflow value Q, if the airflow resistance of the air conditioner increases (i.e., the air pressure of the air conditioner increases), the stepless constant airflow control system will automatically recognize the change in the airflow resistance curve. Furthermore, when the airflow resistance of the air conditioner increases, the airflow resistance curve will change from a low resistance curve to a high resistance curve. Figure 4As shown, if the air conditioner is to continue maintaining a constant airflow, the system will adjust from a low-resistance constant-power state to a high-resistance constant-power state. In other words, the system needs to provide greater air pressure to maintain the air conditioner's constant airflow output. Increasing air pressure can be achieved by increasing the air conditioner's operating speed. That is, when the air conditioner's duct resistance increases (target speed is greater than current speed), the air pressure can be increased by increasing the air conditioner's operating speed to the target speed, thereby maintaining the air conditioner's constant airflow output. Conversely, if the air conditioner's duct resistance decreases (target speed is less than current speed), the air pressure can be decreased by decreasing the air conditioner's operating speed to the target speed, thereby maintaining the air conditioner's constant airflow output.

[0101] It should be noted that the target speed is determined in real time based on the actual air pressure value, the current actual air volume value, and the target air volume value of the air conditioner, and is not fixed.

[0102] For example, with Figure 4 For example, from Figure 4 As can be seen from the diagram, the air conditioner operates at a low power level, with point b as the operating point. At this point, the air volume output by the air conditioner is Q1, and the air pressure is P1. When the air resistance of the air conditioner increases, the operating point of the air conditioner changes from point b to point c, and the air pressure also increases from P1 to P2, while the air volume changes from Q1 to Q2. If we want to maintain the air conditioner's output of Q1 air volume, we need to increase the air pressure to the level corresponding to point d. Therefore, we can increase the air pressure by increasing the air conditioner's speed, thereby achieving the goal of maintaining the air volume output of Q1.

[0103] Therefore, after determining the target speed of the air conditioner, it is possible to further determine whether the target speed is consistent with the current speed. If the target speed is consistent with the current speed, it means that the air conditioner can maintain a constant air volume output at the current speed. At this time, the air conditioner speed can be left unchanged, and the running time of the air conditioner can be timed. If the timed time is equal to the preset time interval, the current power value and current speed of the air conditioner are collected again. In order to perform a new cycle of stepless constant air volume control based on the newly collected current power value and current speed of the air conditioner, this cycle is repeated to ensure the accuracy of constant air volume control.

[0104] If the target speed of the air conditioner is inconsistent with the current speed, it means that the air conditioner cannot maintain a constant air volume output at the current speed. In this case, the speed of the air conditioner needs to be adjusted to ensure that the air conditioner maintains a constant air volume output.

[0105] In some embodiments, if the target speed of the air conditioner is determined to be inconsistent with the current speed of the air conditioner, if the current speed of the air conditioner is less than the target speed, the speed of the air conditioner can be increased to the target speed so that the air volume output by the air conditioner approaches the target air volume value; if the current speed of the air conditioner is greater than the target speed, the speed of the air conditioner can be decreased to the target speed so that the air volume output by the air conditioner approaches the target air volume value.

[0106] Furthermore, in this embodiment, after adjusting the air conditioner's speed to the target speed, the actual air volume output of the air conditioner can be detected, and the air volume achievement rate of the air conditioner can be calculated based on the actual air volume output of the air conditioner and the target air volume value, so as to determine the control accuracy of constant air volume control using the stepless constant air volume control method provided in this application based on the air volume achievement rate of the air conditioner.

[0107] It should be noted that it is possible to determine whether the air volume achievement rate of the air conditioner is within the preset air volume achievement rate range. If it is, it can be considered that the control accuracy of constant air volume control using the stepless constant air volume control method provided in this application is high, that is, the constant air volume control effect is good. If it is not, it means that the current constant air volume control effect is insufficient, and corresponding prompt information can be output to prompt the relevant technical personnel to make corresponding adjustments to improve the constant air volume control effect.

[0108] It should also be noted that the preset airflow achievement rate range can be [95%, 105%]. For example, taking the FP102 fan coil unit as an example, the airflow achievement rate of the actual output airflow value of the FP102 fan coil unit controlled by the stepless constant airflow control method provided in this application is as follows: Figure 5 As shown, from Figure 5 It can be seen that the air volume achievement rate of each cycle is within the preset air volume achievement rate range, which means that the control accuracy of constant air volume control using the stepless constant air volume control method provided in this application is high, that is, the constant air volume control effect is good.

[0109] S107: Adjust the air conditioner speed according to the target speed so that the air volume output of the air conditioner is close to the target air volume value.

[0110] This invention provides a stepless constant airflow control method, which periodically collects the current power value and current speed of the air conditioner; determines a first airflow value group based on a preset air pressure value group and the current speed; wherein the preset air pressure value group includes multiple preset air pressure values, and the first airflow value group includes a first airflow value corresponding to each preset air pressure value; determines a second airflow value group based on the preset air pressure value group and the current power value; wherein the second airflow value group includes a second airflow value corresponding to each preset air pressure value; determines the current actual air pressure value of the air conditioner based on the first and second airflow values ​​corresponding to each preset air pressure value, and determines the actual airflow value of the air conditioner based on the actual air pressure value; determines the target speed of the air conditioner based on the current air pressure value, the current actual airflow value, and the target airflow value; if the target speed is inconsistent with the current speed, adjusts the speed of the air conditioner according to the target speed so that the airflow value output by the air conditioner approaches the target airflow value. The technical solution provided in this application determines the first and second airflow values ​​for each preset air pressure value by using preset air pressure value groups and the current air conditioner speed and power value. Then, the actual air pressure and airflow values ​​of the air conditioner can be determined using these preset air pressure value groups and power values, eliminating the need for sensor measurements. This avoids inaccurate airflow measurements due to factors such as installation location, uneven airflow, orientation, and blockages, which could prevent precise constant airflow control. Furthermore, the actual airflow value of the air conditioner is determined based on its current power and speed. The target speed of the air conditioner is then determined based on the current air pressure value, the actual airflow value, and the target airflow value. The air conditioner speed is adjusted according to this target speed to maintain a constant airflow output. This solution further addresses the problem of adjustment based on actual needs and conditions in existing technologies, thereby improving the user experience.

[0111] To better understand the stepless constant air volume control method provided in the embodiments of this application, the following example illustrates the method. Figure 6 As shown.

[0112] For example, the initial speed of the air conditioner can be preset to N0, and the preset air pressure value group can be (0Pa, 1Pa, ..., nPa).

[0113] When the air conditioner is detected to be turned on, control the air conditioner to run at the initial speed N0.

[0114] Collect the current power value and current speed of the air conditioner.

[0115] Based on the target air volume-speed model corresponding to each preset air pressure value and the current speed in each pre-fitted air volume-speed model, the first air volume value corresponding to each preset air pressure value is calculated sequentially.

[0116] Based on the target air volume-speed model and the current power value corresponding to each preset air pressure value in each pre-fitted air volume-power model, the second air volume value corresponding to each preset air pressure value is calculated sequentially.

[0117] Calculate the absolute value of the difference between the first air volume value and the second air volume value for each preset air pressure value, and select the minimum value from the absolute values ​​of each difference as the target air volume difference value, so that the preset air pressure value corresponding to the target air volume difference value is determined as the actual air pressure value of the air conditioner.

[0118] The air volume-speed model matching the actual air pressure value is determined from the pre-built air volume-power models; the current speed is substituted into the air volume-speed model matching the actual air pressure value for calculation to obtain the actual air volume value of the air conditioner.

[0119] Substitute the actual air pressure value, actual air volume value and target air volume value of the air conditioner into formula (1) to calculate the initial air pressure value under the target air volume value, and determine the target air pressure value under the target air volume value based on the initial air pressure value.

[0120] The air volume-speed model matching the target air pressure value is determined from the various pre-built air volume-speed models; the target air volume value is substituted into the air volume-speed model matching the target air pressure for calculation to obtain the target speed of the air conditioner.

[0121] Control the air conditioner to run at the target speed so that the air volume output by the air conditioner is close to the target air volume value.

[0122] Determine if the air conditioner is turned off.

[0123] If the unit is turned off, the stepless constant air volume control can be terminated.

[0124] If the unit is not turned off, the running time of the air conditioner can be started. If the timed time is equal to the preset time interval, the current power value and current speed of the air conditioner will be collected again. In order to perform stepless constant air volume control for a new cycle based on the collected current power value and current speed of the air conditioner, this cycle will be repeated to ensure the accuracy of constant air volume control.

[0125] Based on the stepless constant air volume control method provided in the above embodiments of the present invention, correspondingly, the present invention also provides a stepless constant air volume control system, such as... Figure 7 As shown, the stepless constant air volume control system includes:

[0126] The periodic acquisition unit 71 is used to periodically acquire the current power value and current speed of the air conditioner;

[0127] The first determining unit 72 is used to determine a first air volume value group based on a preset air pressure value group and the current rotation speed; wherein, the preset air pressure value group includes multiple preset air pressure values, and the first air volume value group includes a first air volume value corresponding to each preset air pressure value;

[0128] The second determining unit 73 is used to determine a second air volume value group based on a preset wind pressure value group and the current power value; wherein, the second air volume value group includes a second air volume value corresponding to each preset wind pressure value;

[0129] The third determining unit 74 is used to determine the actual air pressure value of the air conditioner based on the first air volume value and the second air volume value corresponding to each preset air pressure value, and to determine the actual air volume value of the air conditioner based on the actual air pressure value.

[0130] The fourth determining unit 75 is used to determine the target speed of the air conditioner based on the actual wind pressure value, the current actual air volume value, and the target air volume value.

[0131] The adjustment unit 76 is used to adjust the air conditioner's speed according to the target speed if the target speed is inconsistent with the current speed, so that the air volume output by the air conditioner is close to the target air volume value.

[0132] The specific principles and execution processes of each unit in the stepless constant air volume control system disclosed in the above embodiments of the present invention are the same as those of the stepless constant air volume control method disclosed in the above embodiments of the present invention. Please refer to the corresponding parts of the stepless constant air volume control method disclosed in the above embodiments of the present invention, and they will not be repeated here.

[0133] This invention provides a stepless constant airflow control method, which periodically collects the current power value and current speed of the air conditioner; determines a first airflow value group based on a preset air pressure value group and the current speed; wherein the preset air pressure value group includes multiple preset air pressure values, and the first airflow value group includes a first airflow value corresponding to each preset air pressure value; determines a second airflow value group based on the preset air pressure value group and the current power value; wherein the second airflow value group includes a second airflow value corresponding to each preset air pressure value; determines the current actual air pressure value of the air conditioner based on the first and second airflow values ​​corresponding to each preset air pressure value, and determines the actual airflow value of the air conditioner based on the actual air pressure value; determines the target speed of the air conditioner based on the current air pressure value, the current actual airflow value, and the target airflow value; if the target speed is inconsistent with the current speed, adjusts the speed of the air conditioner according to the target speed so that the airflow value output by the air conditioner approaches the target airflow value. The technical solution provided in this application determines the first and second airflow values ​​for each preset air pressure value by using preset air pressure value groups and the current air conditioner speed and power value. Then, the actual air pressure and airflow values ​​of the air conditioner can be determined using these preset air pressure value groups and power values, eliminating the need for sensor measurements. This avoids inaccurate airflow measurements due to factors such as installation location, uneven airflow, orientation, and blockages, which could prevent precise constant airflow control. Furthermore, the actual airflow value of the air conditioner is determined based on its current power and speed. The target speed of the air conditioner is then determined based on the current air pressure value, the actual airflow value, and the target airflow value. The air conditioner speed is adjusted according to this target speed to maintain a constant airflow output. This solution further addresses the problem of adjustment based on actual needs and conditions in existing technologies, thereby improving the user experience.

[0134] Optionally, the first determining unit includes:

[0135] The acquisition unit is used to acquire a pre-set set of preset wind pressure values;

[0136] The fifth determining unit is used to determine the target air volume-speed model matching the preset air pressure value from each preset air pressure value in the preset air pressure value group; wherein, each air volume-speed model is an air volume-speed fitting function generated from each first air pressure characteristic curve obtained by fitting the speed-air volume test data.

[0137] The first calculation unit is used to substitute the current rotation speed into the target air volume-rotation speed model that matches the preset air pressure value to calculate the first air volume value corresponding to the preset air pressure value.

[0138] The first component unit is used to form a first air volume value group by combining the first air volume values ​​corresponding to each preset wind pressure value.

[0139] Optionally, the second determining unit includes:

[0140] The sixth determining unit is used to determine the target air volume-power model matching the preset air volume-power model from each preset air volume-power model pre-constructed for each preset air volume-power model in the preset air volume-power value group; wherein, each air volume-power model is an air volume-power fitting function generated from each second air volume characteristic curve obtained by fitting power-air volume test data.

[0141] The second calculation unit is used to substitute the current power value into the target air volume-power model that matches the preset wind pressure value to calculate the second air volume value corresponding to the preset wind pressure value.

[0142] The second component unit is used to assemble the second air volume values ​​corresponding to each preset wind pressure value into a second air volume value group.

[0143] Optionally, the third determining unit includes:

[0144] The third calculation unit is used to calculate the air volume difference between the first air volume value and the second air volume value corresponding to each preset air pressure value.

[0145] The filtering unit is used to filter out the target air volume difference from the absolute values ​​of the air volume differences corresponding to each preset wind pressure value;

[0146] The seventh determining unit is used to determine the preset air pressure value corresponding to the target air volume difference as the actual air pressure value of the air conditioner.

[0147] Optionally, the third determining unit includes:

[0148] The eighth determining unit is used to determine the air volume-speed model that matches the actual air pressure value from the various pre-built air volume-speed models.

[0149] The fourth calculation unit is used to substitute the current speed into the air volume-speed model that matches the actual air pressure value to calculate the actual air volume value of the air conditioner.

[0150] Optionally, the fourth determining unit includes:

[0151] The fifth calculation unit is used to calculate the quotient of the target air volume value and the actual air volume value, and to calculate the square of the quotient of the target air volume value and the actual air volume value.

[0152] The ninth determining unit is used to determine the target air pressure value of the air conditioner based on the square of the quotient of the current air pressure value and the target air volume value and the actual air volume value.

[0153] The tenth determining unit is used to determine the air volume-speed model that matches the target air pressure value from the various pre-built air volume-speed models.

[0154] The sixth calculation unit is used to substitute the target air volume value into the air volume-speed model that matches the target air pressure to calculate the target speed of the air conditioner.

[0155] Optionally, the ninth determining unit includes:

[0156] The seventh calculation unit is used to calculate the product of the square of the quotient of the current wind pressure value and the target air volume value and the actual air volume value;

[0157] The judgment unit is used to determine whether the product is within the preset wind pressure range;

[0158] The eleventh determining unit is used to determine the product as the target air pressure value of the air conditioner if the product is within the preset air pressure range and the product is an integer.

[0159] The rounding unit is used to round the product if the product is within the preset air pressure range and the product is not an integer, so as to obtain the target air pressure value of the air conditioner.

[0160] This application provides an electronic device, such as... Figure 8 As shown, the electronic device includes a processor 801 and a memory 802. The memory 802 is used to store program code and data for stepless constant air volume control, and the processor 801 is used to call the program instructions in the memory to execute the steps shown in the stepless constant air volume control method in the above embodiment.

[0161] This application provides a storage medium that includes a stored program, wherein, when the program is running, it controls the device where the storage medium is located to execute the stepless constant airflow control method shown in the above embodiments.

[0162] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for system or system embodiments, since they are basically similar to method embodiments, the description is relatively simple, and relevant parts can be referred to the descriptions in the method embodiments. The systems and system 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 creative effort.

[0163] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0164] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0165] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A stepless constant air volume control method, characterized in that, Applicable to air conditioners, the method includes: The current power value and current speed of the air conditioner are periodically collected; A first airflow value group is determined based on a preset air pressure value group and the current rotation speed; wherein, the preset air pressure value group includes multiple preset air pressure values, and the first airflow value group includes a first airflow value corresponding to each preset air pressure value; A second airflow value group is determined based on the preset wind pressure value group and the current power value; wherein, the second airflow value group includes a second airflow value corresponding to each preset wind pressure value; The actual air pressure value of the air conditioner is determined based on the first air volume value and the second air volume value corresponding to each preset air pressure value, and the actual air volume value of the air conditioner is determined based on the actual air pressure value. The target speed of the air conditioner is determined based on the actual wind pressure value, the current actual air volume value, and the target air volume value. If the target speed is inconsistent with the current speed, the speed of the air conditioner is adjusted according to the target speed so that the air volume output by the air conditioner approaches the target air volume value.

2. The method according to claim 1, characterized in that, The step of determining the first airflow value group based on the preset wind pressure value group and the current rotation speed includes: Obtain the pre-set preset wind pressure value group; For each preset wind pressure value in the preset wind pressure value group, a target air volume-speed model matching the preset wind pressure value is determined from each pre-constructed air volume-speed model; wherein each air volume-speed model is an air volume-speed fitting function generated from each first wind pressure characteristic curve obtained by fitting the speed-air volume test data. Substitute the current rotation speed into the target air volume-rotation speed model that matches the preset air pressure value to calculate the first air volume value corresponding to the preset air pressure value. The first air volume values ​​corresponding to each of the preset wind pressure values ​​are grouped into a first air volume value group.

3. The method according to claim 1, characterized in that, The step of determining the second airflow value group based on the preset wind pressure value group and the current power value includes: For each preset wind pressure value in the preset wind pressure value group, a target air volume-power model matching the preset wind pressure value is determined from each pre-constructed air volume-power model; wherein each air volume-power model is an air volume-power fitting function generated from each second wind pressure characteristic curve obtained by fitting power-air volume test data. Substitute the current power value into the target air volume-power model that matches the preset wind pressure value to calculate the second air volume value corresponding to the preset wind pressure value. The second air volume values ​​corresponding to each of the preset wind pressure values ​​are grouped into a second air volume value group.

4. The method according to claim 1, characterized in that, The step of determining the actual air pressure value of the air conditioner based on the first air volume value and the second air volume value corresponding to each of the preset air pressure values ​​includes: For each preset wind pressure value, calculate the air volume difference between the first air volume value and the second air volume value corresponding to the preset wind pressure value; The target air volume difference is selected from the absolute values ​​of the air volume differences corresponding to each preset wind pressure value; The preset air pressure value corresponding to the target air volume difference is determined as the actual air pressure value of the air conditioner.

5. The method according to claim 1, characterized in that, Determining the actual air volume value of the air conditioner based on the actual wind pressure value includes: Determine the air volume-speed model that matches the actual air pressure value from various pre-built air volume-speed models; The actual air volume value of the air conditioner is obtained by substituting the current rotation speed into the air volume-rotation speed model that matches the actual air pressure value.

6. The method according to claim 1, characterized in that, Determining the target speed of the air conditioner based on the actual wind pressure value, the actual air volume value, and the target air volume value includes: Calculate the quotient of the target air volume value and the actual air volume value, and calculate the square of the quotient of the target air volume value and the actual air volume value; The target air pressure value of the air conditioner is determined based on the current air pressure value and the square of the quotient of the target air volume value and the actual air volume value. Determine the airflow-speed model that matches the target air pressure value from among the various pre-built airflow-speed models; The target air volume value is substituted into the air volume-speed model that matches the target air pressure to calculate the target speed of the air conditioner.

7. The method according to claim 6, characterized in that, The step of determining the target air pressure value of the air conditioner based on the current air pressure value and the square of the quotient of the target air volume value and the actual air volume value includes: Calculate the product of the current wind pressure value and the square of the quotient of the target air volume value and the actual air volume value; Determine whether the product is within the preset wind pressure range; If the product is within the preset air pressure range and the product is an integer, the product is determined as the target air pressure value of the air conditioner; If the product is within the preset wind pressure range and the product is not an integer, the product is rounded down to obtain the target wind pressure value of the air conditioner.

8. A stepless constant air volume control system, characterized in that, Suitable for air conditioning, the system includes: A periodic acquisition unit is used to periodically acquire the current power value and current speed of the air conditioner; The first determining unit is configured to determine a first airflow value group based on a preset air pressure value group and the current rotation speed; wherein the preset air pressure value group includes multiple preset air pressure values, and the first airflow value group includes a first airflow value corresponding to each preset air pressure value; The second determining unit is used to determine a second airflow value group based on the preset wind pressure value group and the current power value; wherein, the second airflow value group includes a second airflow value corresponding to each preset wind pressure value; The third determining unit is used to determine the actual air pressure value of the air conditioner based on the first air volume value and the second air volume value corresponding to each of the preset air pressure values, and to determine the actual air volume value of the air conditioner based on the actual air pressure value. The fourth determining unit is used to determine the target speed of the air conditioner based on the actual wind pressure value, the current actual air volume value, and the target air volume value. An adjustment unit is used to adjust the speed of the air conditioner according to the target speed if the target speed is inconsistent with the current speed, so that the air volume value output by the air conditioner approaches the target air volume value.

9. An electronic device, characterized in that, include: A processor and a memory are connected via a communication bus; wherein the processor is used to call and execute a program stored in the memory; The memory is used to store a program for implementing the stepless constant air volume control method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions for performing the stepless constant air volume control method as described in any one of claims 1-7.

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