Air conditioner control method, device and system and air conditioner

Abstract

The invention discloses an air conditioner control method, device and system and an air conditioner, and belongs to the field of air conditioners. The method comprises the steps that when it is detected that air outlet of the air conditioner is uneven, whether the uneven air outlet reason is unstable of the rotating speed of an inner fan or filth blockage of the air conditioner or not is judged firstly, if yes, the air conditioner is controlled to execute a corresponding mode based on the uneven air outlet reason, and if not or uneven air outlet is still detected after the corresponding mode is executed, the air conditioner is controlled to execute a preset action, so that the air outlet of the air conditioner is even. Due to the fact that the reasons for uneven air outlet in the actual situation are many, only control is carried out in the prior art, the reasons are not distinguished, control needs to be carried out every time, steps are tedious, even uneven air outlet cannot be effectively eliminated, and noise still exists, aiming control is carried out on the basis of the reasons for uneven air outlet, uneven air outlet is effectively eliminated, and noise is reduced; and the user experience is greatly improved.

Description

Technical Field

[0001] The present application relates to the field of air conditioning technology, and in particular, to an air conditioning control method, device, system and air conditioner. Background Art

[0002] At present, users have higher and higher requirements for the performance and user experience of air conditioners. When the air conditioner is blowing air, the air flows from the external high-pressure area to the internal low-pressure area of ​​the vortex, causing airflow turbulence and backflow from the air outlet to the air inlet, causing uneven air outlet. Uneven air outlet will generate noise and reduce user experience. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present application provides an air conditioning control method, device, system and air conditioner to solve the problem that the uneven air output of the prior air conditioner generates noise and reduces the user experience.

[0004] The technical solution adopted by this application to solve its technical problem is:

[0005] In a first aspect, an air conditioning control method is provided, comprising:

[0006] When uneven air flow from the air conditioner is detected, it is determined whether the uneven air flow is caused by unstable speed of the internal fan or dirt and blockage of the air conditioner;

[0007] If yes, controlling the air conditioner to execute a corresponding mode based on the cause of the uneven air flow;

[0008] If not or if uneven air flow is still detected after executing the corresponding mode, the air conditioner is controlled to execute a preset action to make the air flow of the air conditioner uniform.

[0009] Further, the controlling the air conditioner to perform a preset action includes:

[0010] When the air conditioner has an adjustable vortex structure, obtaining the minimum point position at which the wind speed at the indoor unit air outlet is the minimum;

[0011] Determine a target air duct cross section based on the minimum point, wherein the target air duct cross section passes through the minimum point and is perpendicular to the axial direction of the crossflow blade;

[0012] Obtaining a vector wind speed of the target wind duct cross section, and obtaining a streamline diagram based on the vector wind speed;

[0013] Determining the vortex core position of the eccentric vortex in the crossflow impeller based on the streamline diagram;

[0014] The profile of the vortex tongue is changed to control the positive change of the vortex core position, wherein the positive change is as follows: the center position to the cross-section of the inner machine outlet becomes larger, the shortest distance to the inner circumference of the cross-flow impeller becomes smaller, and the distance to the windward surface of the vortex tongue becomes smaller.

[0015] Furthermore, it also includes:

[0016] When the structure of the vortex tongue is adjusted, the air guide plate is controlled to rotate within a first preset angle range, and the air volume and noise value of the air outlet of the internal fan, as well as the angle of the air guide plate, are obtained in real time; wherein the first preset angle range is the initial air guide plate angle ± the first preset angle, and the initial air guide plate angle is the air guide plate angle when the structure of the vortex tongue is adjusted;

[0017] Determine a candidate air guide plate angle among the real-time air guide plate angles, wherein the absolute value of the difference between the real-time air volume corresponding to the candidate air guide plate angle and the initial air volume is less than the preset air volume, and the absolute value of the difference between the real-time noise value corresponding to the candidate air guide plate angle and the initial noise value is less than the preset noise value, wherein the initial air volume is the air volume when the structure of the vortex tongue is adjusted; and the initial noise value is the noise value when the structure of the vortex tongue is adjusted;

[0018] The candidate air deflector angle with the largest air output is determined as the target air deflector angle, and the angle of the air deflector is controlled to be the target air deflector angle.

[0019] Further, the controlling the air conditioner to perform a preset action includes:

[0020] Controlling the rotation of the air guide plate within a second preset angle range, and obtaining the air volume and noise value of the air outlet of the internal fan, as well as the angle of the air guide plate in real time; wherein the second preset angle range is the first air guide plate angle ± the second preset angle, and the first air guide plate angle is the air guide plate angle when uneven air outlet is detected;

[0021] Determine a candidate air deflector angle among the real-time air deflector angles, wherein an absolute value of a difference between a real-time air volume corresponding to the candidate air deflector angle and a first air volume is less than a preset air volume, and an absolute value of a difference between a real-time noise value corresponding to the candidate air deflector angle and a first noise value is less than a preset noise value, wherein the first air volume is an air volume when uneven air flow is detected; and the first noise value is a noise value when uneven air flow is detected;

[0022] The candidate air guide plate angle with the largest air output is determined as the second air guide plate angle, and the angle of the air guide plate is controlled to be the second air guide plate angle.

[0023] Furthermore, it also includes:

[0024] If the absolute value of the difference between the first air guide plate angle and the maximum wind sweeping angle or the minimum wind sweeping angle is greater than the third preset angle, the wind sweeping speed of the air guide plate is increased by the preset wind sweeping speed when passing through the third preset air guide plate angle range when sweeping the air; wherein the third preset air guide plate angle range is the first air guide plate angle ± the fourth preset angle.

[0025] Furthermore, it also includes:

[0026] If the absolute value of the difference between the first air guide plate angle and the maximum wind sweeping angle or the minimum wind sweeping angle is less than or equal to a third preset angle, a new wind sweeping angle range is determined so that the first air guide plate angle is not within the new wind sweeping angle.

[0027] Furthermore, it also includes:

[0028] Get the speed of the internal fan;

[0029] When the absolute value of the difference between the rotation speed of the internal fan at the current moment and the rotation speed at the previous moment is greater than the preset rotation speed, it is determined that the cause of the uneven air output is the unstable rotation speed of the internal fan.

[0030] Furthermore, it also includes:

[0031] Get the actual air volume of the internal fan;

[0032] Determine the air volume attenuation rate based on the actual air volume, where the air volume attenuation rate = |actual air volume - current wind gear preset air volume | / current wind gear preset air volume;

[0033] When it is continuously detected that the air volume attenuation rate is greater than or equal to the preset air volume attenuation rate, or when the absolute value of the difference in the air volume attenuation rates is greater than the preset air volume attenuation rate difference for more than a preset number of times, it is determined that the cause of the uneven air outlet is dirt and blockage of the air conditioner, wherein the difference in the air volume attenuation rates = the air volume attenuation rate at the current moment - the air volume attenuation rate at the previous moment.

[0034] Further, the controlling the air conditioner to execute a corresponding mode based on the cause of uneven air flow includes:

[0035] When the uneven air output is caused by unstable rotation speed of the internal fan, the air conditioner is controlled to execute an anti-rotation speed fluctuation control mode to stabilize the rotation speed by increasing control accuracy.

[0036] Further, the controlling the air conditioner to execute a corresponding mode based on the cause of uneven air flow includes:

[0037] When the uneven air output is caused by dirt and blockage of the air conditioner, the air conditioner is controlled to execute an evaporator self-cleaning mode.

[0038] In a second aspect, an air conditioning control device is provided, comprising:

[0039] The uneven air flow judging module is used to judge whether the uneven air flow is caused by unstable speed of the internal fan or dirty air conditioner blockage when uneven air flow is detected;

[0040] an air conditioner corresponding mode execution module, configured to control the air conditioner to execute a corresponding mode based on the cause of the uneven air flow;

[0041] The air conditioner preset action execution module is used to control the air conditioner to execute a preset action to make the air outlet of the air conditioner uniform if uneven air outlet is still detected after the corresponding mode is executed.

[0042] In a third aspect, an air conditioning control system is provided, comprising:

[0043] at least one processor and at least one memory;

[0044] The memory stores executable instructions of the processor;

[0045] The processor is configured to execute the above-mentioned air conditioning control method.

[0046] In a fourth aspect, an air conditioner is provided, applying the above-mentioned air conditioning control method.

[0047] Beneficial effects:

[0048] The technical solution of the present application provides an air conditioning control method, device, system and air conditioner. When uneven air outlet of the air conditioner is detected, first determine whether the cause of the uneven air outlet is unstable speed of the internal fan or dirty air conditioner blockage. If so, the air conditioner is controlled to execute the corresponding mode based on the cause of the uneven air outlet. If not, or if uneven air outlet is still detected after executing the corresponding mode, the air conditioner is controlled to execute a preset action to make the air outlet of the air conditioner uniform. Because there are many reasons for uneven air outlet in reality, the prior art only performs control without distinguishing the reasons. In this way, control needs to be performed every time, the steps are cumbersome, and even the uneven air outlet cannot be effectively eliminated, resulting in noise. The present application performs targeted control based on the cause of uneven air outlet, effectively eliminates uneven air outlet, reduces noise, and greatly improves user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0050] Figure 1 is a flow chart of an air conditioning control method provided in an embodiment of the present application;

[0051] Figure 2 It is a schematic diagram of a smooth vortex tongue structure provided in an embodiment of the present application;

[0052] Figure 3 It is a schematic diagram of a toothed vortex tongue structure provided in an embodiment of the present application;

[0053] Figure 4 It is a schematic diagram comparing the lateral curves of the windward surface of a smooth vortex tongue structure and a toothed vortex tongue structure provided in an embodiment of the present application;

[0054] Figure 5 It is a streamline diagram and a schematic diagram of the vortex core position provided in an embodiment of the present application;

[0055] Figure 6 is a flow chart of a specific air conditioning control method provided in an embodiment of the present application;

[0056] Figure 7 is a schematic diagram of the structure of an air conditioning control device provided in an embodiment of the present application;

[0057] Figure 8 It is a schematic diagram of an air conditioning control device system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application is described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other implementation methods obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0059] Reference Figure 1 , the embodiment of the present application provides an air conditioning control method, comprising:

[0060] S11: When uneven air flow from the air conditioner is detected, determine whether the uneven air flow is caused by unstable speed of the internal fan or dirt and blockage of the air conditioner.

[0061] In one embodiment, the rotation speed of the internal fan is obtained; when the absolute value of the difference between the rotation speed of the internal fan at the current moment and the rotation speed at the previous moment is greater than the preset rotation speed, it is determined that the cause of the uneven air flow is the unstable rotation speed of the internal fan. In addition, it is also possible to determine whether the cause of the uneven air flow is the unstable rotation speed of the internal fan in other ways, such as based on the power change or current / voltage change of the internal fan.

[0062] In another embodiment, the actual air volume of the internal fan is obtained;

[0063] Determine the air volume attenuation rate based on the actual air volume, where the air volume attenuation rate = |actual air volume - current wind gear preset air volume | / current wind gear preset air volume;

[0064] When it is continuously detected that the air volume attenuation rate is greater than or equal to the preset air volume attenuation rate, or when the absolute value of the difference in the air volume attenuation rates is greater than the preset air volume attenuation rate difference for more than a preset number of times, it is determined that the cause of the uneven air outlet is dirt and blockage of the air conditioner, wherein the difference in the air volume attenuation rates = the air volume attenuation rate at the current moment - the air volume attenuation rate at the previous moment.

[0065] In practice, whether the air conditioner is blocked by dirt can also be determined based on the air volume attenuation value. For example, when the air volume attenuation value is greater than or equal to the preset air volume attenuation, or when the absolute value of the difference in the air volume attenuation values ​​is greater than the preset number of times the difference in the air volume attenuation values ​​occurs, it is determined that the cause of the uneven air output is the air conditioner being blocked by dirt, and the difference in the air volume attenuation values ​​= the air volume attenuation value at the current moment - the air volume attenuation value at the previous moment.

[0066] As a preferred implementation method of the embodiment of the present application, it also includes:

[0067] The size of the preset number is determined according to the absolute value of the difference in the air volume attenuation rate. The larger the absolute value of the difference in the air volume attenuation rate is, the smaller the preset number is.

[0068] S12: If yes, controlling the air conditioner to execute a corresponding mode based on the cause of the uneven air flow;

[0069] Wherein, when the cause of the uneven air flow is the unstable speed of the internal fan, the air conditioner is controlled to execute the anti-speed fluctuation control mode to stabilize the speed by increasing the control accuracy. Exemplarily, by improving PID regulation or introducing negative feedback regulation, for example, the target value of the internal fan speed is set to Nt, and the actual internal fan speed Na is actually obtained through a stroboscope or a speed sensor. Calculate the speed error e=Nt-Na; the controller calculates the correction value u according to the speed error, and the proportional integral control formula can be used as follows: u=Kp*e+Ki*∫edt+Kd*de / dt, wherein Kp, Ki, Kd are proportional, integral and differential coefficients respectively, ∫edt represents the integral of the speed error, and de / dt represents the differential of the speed error. The controller output correction value u will be applied to the internal fan control loop to adjust the control accuracy to stabilize the speed and solve the problem of uneven air flow caused by speed fluctuations.

[0070] When the uneven air flow is caused by the air conditioner being dirty and blocked, the air conditioner is controlled to execute an evaporator self-cleaning mode, wherein the self-cleaning mode is not specifically limited in this application.

[0071] S13: If no or if uneven air flow is still detected after executing the corresponding mode, the air conditioner is controlled to execute a preset action to make the air flow of the air conditioner uniform.

[0072] Generally, the volute structure of the indoor unit of the air conditioner has been optimized to a more appropriate degree during the design stage in order to avoid the problem of uneven air flow. Generally, the air duct structure of the product after leaving the factory is fixed and cannot be adjusted. If the air duct structure itself causes uneven air flow, it is difficult to deal with.

[0073] Therefore, in one embodiment, controlling the air conditioner to perform a preset action includes:

[0074] When the air conditioner has an adjustable vortex tongue structure, the minimum point where the wind speed at the indoor unit air outlet is the minimum is obtained; wherein the adjustable vortex tongue structure has at least two vortex tongue forms, for example, Figure 2 He Ru Figure 3 As shown, it has two forms, smooth and toothed (different shapes can be set in practice, and this application does not make specific restrictions), and both forms can be moved and retracted through the transmission structure, and the volute tongue structure is automatically adjusted to change the volute tongue profile. The windward cross-surface curves of the smooth and toothed forms are as shown in FIG. Figure 4 shown.

[0075] For example, the windward surface of the smooth volute tongue is a straight solid in the longitudinal direction; the windward surface of the toothed volute tongue has a number of teeth evenly distributed in the longitudinal direction, the distance between two adjacent teeth is 2.5mm, the tooth surface width is 2mm, the maximum height difference between the concave and convex tooth surfaces is 8.1mm, and the concave and convex tooth surfaces are designed to be specific profiles in the transverse direction. The above parameters are generally adjusted and designed based on simulation and actual test data.

[0076] In practice, a vortex tongue may be provided, but different parts of the vortex tongue may be adjusted to have a distance from the crossflow blade, so that when the distance changes, the vortex tongue profile also changes.

[0077] The target air duct section is determined based on the minimum point, and the target air duct section passes through the minimum point and is perpendicular to the axial direction of the throughflow fan blade; the minimum point is the point with the worst wind speed, and the streamline diagram obtained from the target air duct section obtained at this point can more clearly obtain the vortex core position.

[0078] The vector wind speed of the target wind duct section is obtained, and a streamline diagram is obtained based on the vector wind speed; the vector wind speed includes not only the magnitude of the wind speed but also the direction of the wind. A streamline diagram is used to show the direction and path of fluid flow. Each streamline represents the flow path of the fluid at a certain moment. A streamline diagram can be generated by measuring and collecting the velocity and direction of the fluid in the flow field.

[0079] Determine the vortex core position of the eccentric vortex in the crossflow impeller based on the streamline diagram; Figure 5 As shown, the center position of the vortex is the vortex core position.

[0080] The profile of the vortex tongue is changed to control the positive change of the vortex core position, and the positive change is: the center position of the cross-section of the air outlet of the internal machine becomes larger, the shortest distance to the inner circumference of the crossflow impeller becomes smaller, and the distance to the windward surface of the vortex tongue becomes smaller. At this time, the reflow area on the air outlet side becomes smaller, the airflow trajectory becomes smooth and smooth, and the airflow at the air outlet is continuous, stable and more uniform, which solves the uneven air outlet caused by the air duct itself.

[0081] Furthermore, if the volute tongue structure is adjusted, the fixed angle of the air guide plate will also be automatically adjusted accordingly. Detection is performed through the first wind speed sensor and the noise sensor also provided at the air outlet. Under the condition that the change in the air volume is within the threshold and the noise change value is within the threshold, the air guide plate angle with the largest air volume that meets the above conditions is selected as the new fixed angle in this mode. Specifically, when the structure of the vortex tongue is adjusted, the rotation of the air guide plate is controlled within the first preset angle range, and the air volume and noise value of the air outlet of the internal fan, as well as the angle of the air guide plate are obtained in real time; wherein the first preset angle range is the initial air guide plate angle ± the first preset angle, and the initial air guide plate angle is the angle of the air guide plate when the structure of the vortex tongue is adjusted;

[0082] Determine a candidate air guide plate angle among the real-time air guide plate angles, wherein the absolute value of the difference between the real-time air volume corresponding to the candidate air guide plate angle and the initial air volume is less than the preset air volume, and the absolute value of the difference between the real-time noise value corresponding to the candidate air guide plate angle and the initial noise value is less than the preset noise value, wherein the initial air volume is the air volume when the structure of the vortex tongue is adjusted; and the initial noise value is the noise value when the structure of the vortex tongue is adjusted;

[0083] The candidate air deflector angle with the largest air output is determined as the target air deflector angle, and the angle of the air deflector is controlled to be the target air deflector angle.

[0084] In another embodiment, controlling the air conditioner to perform a preset action includes:

[0085] Controlling the rotation of the air guide plate within a second preset angle range, and obtaining the air volume and noise value of the air outlet of the internal fan, as well as the angle of the air guide plate in real time; wherein the second preset angle range is the first air guide plate angle ± the second preset angle, and the first air guide plate angle is the air guide plate angle when uneven air outlet is detected;

[0086] Determine a candidate air deflector angle among the real-time air deflector angles, wherein an absolute value of a difference between a real-time air volume corresponding to the candidate air deflector angle and a first air volume is less than a preset air volume, and an absolute value of a difference between a real-time noise value corresponding to the candidate air deflector angle and a first noise value is less than a preset noise value, wherein the first air volume is an air volume when uneven air flow is detected; and the first noise value is a noise value when uneven air flow is detected;

[0087] The candidate air guide plate angle with the largest air output is determined as the second air guide plate angle, and the angle of the air guide plate is controlled to be the second air guide plate angle.

[0088] As an optional implementation method of the embodiment of the present application, if the absolute value of the difference between the first air guide plate angle and the maximum wind sweeping angle or the minimum wind sweeping angle is greater than a third preset angle, the wind sweeping speed of the air guide plate is increased by a preset wind sweeping speed when passing through a third preset air guide plate angle range when sweeping the air; wherein the third preset air guide plate angle range is the first air guide plate angle ± a fourth preset angle.

[0089] It should be noted that if the absolute value of the difference between the first air guide plate angle and the maximum wind sweeping angle or the minimum wind sweeping angle is less than or equal to the third preset angle, no control may be performed (i.e., the current state may remain unchanged), or control may be performed according to the scheme of the following embodiment.

[0090] In another embodiment, if the absolute value of the difference between the first air guide plate angle and the maximum wind sweeping angle or the minimum wind sweeping angle is less than or equal to a third preset angle, a new wind sweeping angle range is determined so that the first air guide plate angle is not within the new wind sweeping angle.

[0091] It should be noted that in this embodiment, if the absolute value of the difference between the first air guide plate angle and the maximum wind sweeping angle or the minimum wind sweeping angle is greater than the third preset angle, it may not be controlled, or it may be controlled according to the scheme provided in the above embodiment.

[0092] It should be noted that the implementation of this embodiment is based on the fact that the air conditioner does not have an adjustable vortex tongue structure or has an adjustable vortex tongue structure but the user is not allowed to adjust the vortex tongue structure.

[0093] The air conditioning control method provided in the embodiment of the present application, when uneven air flow from the air conditioner is detected, first determines whether the cause of the uneven air flow is unstable speed of the internal fan or dirty air conditioner blockage. If so, the air conditioner is controlled to execute a corresponding mode based on the cause of the uneven air flow. If not, or if uneven air flow is still detected after executing the corresponding mode, the air conditioner is controlled to execute a preset action to make the air flow from the air conditioner uniform. Because there are many reasons for uneven air flow in reality, the prior art only performs control without distinguishing the reasons. In this way, control needs to be performed every time, the steps are cumbersome, and the uneven air flow cannot even be effectively eliminated, resulting in noise. The present application performs targeted control based on the cause of uneven air flow, effectively eliminates uneven air flow, reduces noise, and greatly improves user experience.

[0094] In order to more clearly illustrate the present application scheme, a specific air conditioning control method is provided below. Figure 6 As shown, the following steps are included:

[0095] The first wind speed sensor is located at the air outlet of the indoor unit. When the air conditioner is running at the set wind speed, the first wind speed sensor detects that there is a difference in the air outlet speed of the air outlet cross section and the wind speed difference is greater than the preset value V1, indicating that the air outlet of the air conditioner is uneven.

[0096] Assume that the speed of the internal fan of the air conditioner is N0 at the set wind speed. At this time, by monitoring the speed fluctuation of the fan in the system, it is determined whether the speed is always maintained at N0±30r (when it is not N0±30r, it means that the error between the actual running speed of the motor and the target speed input by the controller is too large, the controller logic is wrong or the motor itself has quality problems. This situation is generally discovered and solved in the early development stage) and within the speed range of Nn+1-Nn<15r, if Nn+1-Nn>15r appears, and the number of occurrences is not less than 1, it is determined that the unstable speed of the indoor unit causes uneven air flow. The next step is to enter the anti-speed fluctuation control mode, stabilize the speed by increasing the control accuracy and solve the uneven air flow caused by speed fluctuations.

[0097] When the air conditioner is running at the set wind speed, the gap between the crossflow fan blade and the volute is defined as d1, and the gap between the crossflow fan blade and the volute tongue is defined as d2. The maximum value of the gaps d=max{d1, d2} is selected. The angle formed by the upper edge of the volute and the axis of the crossflow fan blade and the upper edge of the volute tongue is α. The outer radius of the fan blade is r, and the axial length of the crossflow fan blade is L. The air inlet section is assumed to be a curved surface formed by an arc l with a length L and a radius R=r+d and a central angle α with the axis of the fan blade as the center. The wind speed passing through the air inlet section can be detected by a second wind speed sensor arranged between the evaporator and the crossflow fan blade. The actual air volume passing through the curved surface can be calculated by the integral formula Q=∫F·ds. The air volume attenuation rate = | actual air volume - current wind speed preset air volume | / current wind speed preset air volume. If the air volume attenuation rate is detected to be ≥15% continuously, or the difference between the air volume attenuation rate before and after is ≥8% within 60 seconds under the condition of stable speed detection, and the number of times is not less than 4, it means that the air conditioner is blocked by dirt. The next step is to send a self-cleaning command to the controller, so that the air conditioner enters the evaporator self-cleaning mode, cleans the dust and other impurities on the evaporator, and solves the uneven air flow caused by dirt blockage.

[0098] When the above two measures do not improve the situation, the point where the minimum wind speed of the outlet section is monitored by the first wind speed sensor and the wind duct section formed perpendicular to the axial direction of the throughflow fan blade are used to collect the vector wind speed on the wind duct section through the third wind speed sensor to obtain the streamline diagram, and determine the position of the vortex core of the eccentric vortex in the throughflow impeller. Suppose the distance between the vortex core position and the center position of the outlet section is x, the shortest distance between the vortex core position and the inner circumference of the throughflow impeller is y, and the distance between the vortex core position and the windward surface of the volute tongue is z. The air-conditioning system preferably adopts a movable volute tongue structure, which has two forms, smooth and toothed, and both forms can be moved and retracted through a transmission structure. The volute tongue structure automatically adjusts and changes the volute tongue profile to cause a positive change in the position of the vortex core of the eccentric vortex: farther away from the air outlet end, closer to the inner circumference, and closer to the windward surface of the volute tongue (i.e., x becomes larger, y becomes smaller, and z becomes smaller). At this time, the reflow area on the air outlet side becomes smaller, the airflow trajectory becomes smoother, and the airflow at the air outlet is continuous, stable, and more uniform, thereby solving the uneven air outlet caused by the air duct itself.

[0099] Furthermore, if the volute tongue structure is adjusted, the fixed angle of the air guide plate will also be automatically adjusted. Through the first wind speed sensor and the noise sensor also set at the air outlet, the air guide plate is increased by 1° up / down on the basis of the original angle each time, and the maximum angle range of the front and rear changes is within ±10°. The air guide plate angle with the largest air volume that meets the above conditions is selected as the new fixed angle in this mode.

[0100] If the above-mentioned method of changing the structure of the volute tongue is not considered, when the air duct structure remains unchanged, the angle of the air guide plate and the rotation speed of the air guide plate before and after passing a specific angle can also be adjusted. Assume that the angle of the air guide plate when uneven air flow is detected is W0, and the new angle of the air guide plate is W1. The air guide plate moves upward 2° on the basis of W0 each time. After reaching the maximum adjustable angle 1 (Wmin=W0-10°), if there is still uneven air flow, the air guide plate will be reset to W0 first and move downward 2° on the basis of W0 each time until the maximum adjustable angle 2 (Wmax=W0+10°) is reached, that is, W0-10°≤W1≤W0+10°. After determining the new air guide plate angle W1, if the angle W0 with uneven air flow is within the range of the upper and lower sweeping wind angles, and is within 3° of the maximum sweeping wind angle / minimum sweeping wind angle, update the range of the upper and lower sweeping wind angles so that W0 is not within the new range of the upper and lower sweeping wind angles. If the uneven air outlet angle W0 is within the upper and lower sweep angle range and is not within the maximum sweep angle / minimum sweep angle difference of 3°, the air guide plate is controlled to sweep the air and its sweep speed is increased by 20ms within the range of [W0-1°, W0+1°].

[0101] The specific control method provided in the embodiment of the present application is based on the problem of uneven air volume at the air outlet caused by unstable motor speed, internal machine blockage, etc. during the operation of the air-conditioning system. This article analyzes the causes of uneven air outlet by detecting motor speed, inlet air volume attenuation rate, air outlet wind speed, eccentric vortex core position, etc., and executes targeted command measures (anti-speed fluctuation control mode, evaporator self-cleaning mode, air guide plate fine-tuning mode, etc.) to solve the problem, improve user experience, and enhance the quality of air conditioning.

[0102] Based on the same inventive concept, Figure 7 As shown, the present application also provides an air conditioning control device 70, including:

[0103] The uneven air flow reason determination module 71 is used to determine whether the uneven air flow reason is due to unstable speed of the internal fan or dirty air conditioner blockage when uneven air flow is detected;

[0104] In one embodiment, the rotation speed of the internal fan is obtained;

[0105] When the absolute value of the difference between the rotation speed of the internal fan at the current moment and the rotation speed at the previous moment is greater than the preset rotation speed, it is determined that the cause of the uneven air output is the unstable rotation speed of the internal fan.

[0106] In another embodiment, the actual air volume of the internal fan is obtained;

[0107] Determine the air volume attenuation rate based on the actual air volume, where the air volume attenuation rate = |actual air volume - current wind gear preset air volume | / current wind gear preset air volume;

[0108] When it is continuously detected that the air volume attenuation rate is greater than or equal to the preset air volume attenuation rate, or when the absolute value of the difference in the air volume attenuation rates is greater than the preset air volume attenuation rate difference for more than a preset number of times, it is determined that the cause of the uneven air outlet is dirt and blockage of the air conditioner, wherein the difference in the air volume attenuation rates = the air volume attenuation rate at the current moment - the air volume attenuation rate at the previous moment.

[0109] an air conditioner corresponding mode execution module 72, configured to control the air conditioner to execute a corresponding mode based on the cause of the uneven air flow;

[0110] In one embodiment, controlling the air conditioner to execute a corresponding mode based on the cause of the uneven air flow includes:

[0111] When the uneven air output is caused by unstable rotation speed of the internal fan, the air conditioner is controlled to execute an anti-rotation speed fluctuation control mode to stabilize the rotation speed by increasing control accuracy.

[0112] In another embodiment, the controlling the air conditioner to execute a corresponding mode based on the cause of the uneven air flow includes:

[0113] When the uneven air output is caused by dirt and blockage of the air conditioner, the air conditioner is controlled to execute an evaporator self-cleaning mode.

[0114] The air conditioner preset action execution module 73 is used to control the air conditioner to execute a preset action to make the air outlet of the air conditioner uniform if uneven air outlet is still detected after the corresponding mode is executed.

[0115] In one embodiment, controlling the air conditioner to perform a preset action includes:

[0116] When the air conditioner has an adjustable vortex structure, obtaining the minimum point position at which the wind speed at the indoor unit air outlet is the minimum;

[0117] Determine a target air duct cross section based on the minimum point, wherein the target air duct cross section passes through the minimum point and is perpendicular to the axial direction of the crossflow blade;

[0118] Obtaining a vector wind speed of the target wind duct cross section, and obtaining a streamline diagram based on the vector wind speed;

[0119] Determining the vortex core position of the eccentric vortex in the crossflow impeller based on the streamline diagram;

[0120] The profile of the vortex tongue is changed to control the positive change of the vortex core position, wherein the positive change is as follows: the center position to the cross-section of the inner machine outlet becomes larger, the shortest distance to the inner circumference of the cross-flow impeller becomes smaller, and the distance to the windward surface of the vortex tongue becomes smaller.

[0121] Further, when the structure of the vortex tongue is adjusted, the air guide plate is controlled to rotate within a first preset angle range, and the air volume and noise value of the air outlet of the internal fan, as well as the air guide plate angle, are obtained in real time; wherein the first preset angle range is the initial air guide plate angle ± the first preset angle, and the initial air guide plate angle is the air guide plate angle when the structure of the vortex tongue is adjusted;

[0122] Determine a candidate air guide plate angle among the real-time air guide plate angles, wherein the absolute value of the difference between the real-time air volume corresponding to the candidate air guide plate angle and the initial air volume is less than the preset air volume, and the absolute value of the difference between the real-time noise value corresponding to the candidate air guide plate angle and the initial noise value is less than the preset noise value, wherein the initial air volume is the air volume when the structure of the vortex tongue is adjusted; and the initial noise value is the noise value when the structure of the vortex tongue is adjusted;

[0123] The candidate air deflector angle with the largest air output is determined as the target air deflector angle, and the angle of the air deflector is controlled to be the target air deflector angle.

[0124] In another embodiment, controlling the air conditioner to perform a preset action includes:

[0125] Controlling the rotation of the air guide plate within a second preset angle range, and obtaining the air volume and noise value of the air outlet of the internal fan, as well as the angle of the air guide plate in real time; wherein the second preset angle range is the first air guide plate angle ± the second preset angle, and the first air guide plate angle is the air guide plate angle when uneven air outlet is detected;

[0126] Determine a candidate air deflector angle among the real-time air deflector angles, wherein an absolute value of a difference between a real-time air volume corresponding to the candidate air deflector angle and a first air volume is less than a preset air volume, and an absolute value of a difference between a real-time noise value corresponding to the candidate air deflector angle and a first noise value is less than a preset noise value, wherein the first air volume is an air volume when uneven air flow is detected; and the first noise value is a noise value when uneven air flow is detected;

[0127] The candidate air guide plate angle with the largest air output is determined as the second air guide plate angle, and the angle of the air guide plate is controlled to be the second air guide plate angle.

[0128] Further, if the absolute value of the difference between the first air guide plate angle and the maximum air sweeping angle or the minimum air sweeping angle is greater than a third preset angle, the air guide plate is controlled to increase the preset air sweeping speed when passing through the third preset air guide plate angle range when sweeping the air; wherein the third preset air guide plate angle range is the first air guide plate angle ± a fourth preset angle.

[0129] In addition, if the absolute value of the difference between the first air guide plate angle and the maximum wind sweeping angle or the minimum wind sweeping angle is less than or equal to the third preset angle, a new wind sweeping angle range is determined so that the first air guide plate angle is not within the new wind sweeping angle.

[0130] The air conditioner control device provided in the embodiment of the present application, when detecting uneven air flow from the air conditioner, first determines whether the cause of the uneven air flow is unstable speed of the internal fan or dirty air conditioner blockage. If so, the air conditioner is controlled to execute a corresponding mode based on the cause of the uneven air flow. If not, or if uneven air flow is still detected after executing the corresponding mode, the air conditioner is controlled to execute a preset action to make the air flow from the air conditioner uniform. Because there are many reasons for uneven air flow in reality, the prior art only performs control without distinguishing the reasons. In this way, control needs to be performed every time, the steps are cumbersome, and the uneven air flow cannot even be effectively eliminated, resulting in noise. The present application performs targeted control based on the cause of uneven air flow, effectively eliminates uneven air flow, reduces noise, and greatly improves user experience.

[0131] Based on the same inventive concept, Figure 8 As shown, the present application also provides an air conditioning control system 80, including:

[0132] at least one processor 81 and at least one memory 82;

[0133] The memory stores executable instructions of the processor;

[0134] The processor is configured to execute the air conditioning control method provided in the above embodiment.

[0135] The air conditioning control system provided by the embodiment of the present application stores executable instructions of the processor in the memory. When the executable instructions are executed, the processor can first determine whether the cause of the uneven air outlet is the unstable speed of the internal fan or the dirty blockage of the air conditioner when the uneven air outlet is detected. If so, the air conditioner is controlled to execute the corresponding mode based on the cause of the uneven air outlet. If not, or if the uneven air outlet is still detected after executing the corresponding mode, the air conditioner is controlled to execute a preset action to make the air outlet of the air conditioner uniform. Because there are many reasons for uneven air outlet in reality, the prior art only performs control without distinguishing the reasons. In this way, control needs to be performed every time, the steps are cumbersome, and the uneven air outlet cannot even be effectively eliminated, resulting in noise. The present application performs targeted control based on the cause of uneven air outlet, effectively eliminates uneven air outlet, reduces noise, and greatly improves user experience.

[0136] Based on the same inventive concept, the present application also provides an air conditioner, which applies the air conditioning control method provided in the above embodiment.

[0137] The air conditioner provided in the embodiment of the present application, by applying the air conditioner control method provided in the above embodiment, can first determine whether the cause of the uneven air outlet is the unstable speed of the internal fan or the dirty blockage of the air conditioner when uneven air outlet is detected. If so, the air conditioner is controlled to execute the corresponding mode based on the cause of the uneven air outlet. If not, or if uneven air outlet is still detected after executing the corresponding mode, the air conditioner is controlled to execute a preset action to make the air outlet of the air conditioner uniform. Because there are many reasons for uneven air outlet in reality, the prior art only performs control without distinguishing the reasons. In this way, control needs to be performed every time, the steps are cumbersome, and the uneven air outlet cannot even be effectively eliminated, resulting in noise. The present application performs targeted control based on the cause of uneven air outlet, effectively eliminates uneven air outlet, reduces noise, and greatly improves user experience.

[0138] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0139] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

Claims

1. An air conditioning control method, characterized in that: include: When uneven air flow from the air conditioner is detected, it is determined whether the uneven air flow is caused by unstable speed of the internal fan or dirt and blockage of the air conditioner; If yes, controlling the air conditioner to execute a corresponding mode based on the cause of the uneven air flow; If not or if uneven air flow is still detected after executing the corresponding mode, the air conditioner is controlled to execute a preset action to make the air flow of the air conditioner uniform.

2. The method according to claim 1, characterized in that: The controlling the air conditioner to perform a preset action includes: When the air conditioner has an adjustable vortex structure, obtaining the minimum point position at which the wind speed at the indoor unit air outlet is the minimum; Determine a target air duct cross section based on the minimum point, wherein the target air duct cross section passes through the minimum point and is perpendicular to the axial direction of the crossflow blade; Obtaining a vector wind speed of the target wind duct cross section, and obtaining a streamline diagram based on the vector wind speed; Determining the vortex core position of the eccentric vortex in the crossflow impeller based on the streamline diagram; The profile of the vortex tongue is changed to control the positive change of the vortex core position, wherein the positive change is as follows: the center position to the cross-section of the inner machine outlet becomes larger, the shortest distance to the inner circumference of the cross-flow impeller becomes smaller, and the distance to the windward surface of the vortex tongue becomes smaller.

3. The method according to claim 2, characterized in that Also includes: When the structure of the vortex tongue is adjusted, the air guide plate is controlled to rotate within a first preset angle range, and the air volume and noise value of the air outlet of the internal fan, as well as the angle of the air guide plate, are obtained in real time; wherein the first preset angle range is the initial air guide plate angle ± the first preset angle, and the initial air guide plate angle is the air guide plate angle when the structure of the vortex tongue is adjusted; Determine a candidate air guide plate angle among the real-time air guide plate angles, wherein the absolute value of the difference between the real-time air volume corresponding to the candidate air guide plate angle and the initial air volume is less than the preset air volume, and the absolute value of the difference between the real-time noise value corresponding to the candidate air guide plate angle and the initial noise value is less than the preset noise value, wherein the initial air volume is the air volume when the structure of the vortex tongue is adjusted; and the initial noise value is the noise value when the structure of the vortex tongue is adjusted; The candidate air deflector angle with the largest air output is determined as the target air deflector angle, and the angle of the air deflector is controlled to be the target air deflector angle.

4. The method according to claim 1, characterized in that: The controlling the air conditioner to perform a preset action includes: Controlling the rotation of the air guide plate within a second preset angle range, and obtaining the air volume and noise value of the air outlet of the internal fan, as well as the angle of the air guide plate in real time; wherein the second preset angle range is the first air guide plate angle ± the second preset angle, and the first air guide plate angle is the air guide plate angle when uneven air outlet is detected; Determine a candidate air deflector angle among the real-time air deflector angles, wherein an absolute value of a difference between a real-time air volume corresponding to the candidate air deflector angle and a first air volume is less than a preset air volume, and an absolute value of a difference between a real-time noise value corresponding to the candidate air deflector angle and a first noise value is less than a preset noise value, wherein the first air volume is an air volume when uneven air flow is detected; and the first noise value is a noise value when uneven air flow is detected; The candidate air guide plate angle with the largest air output is determined as the second air guide plate angle, and the angle of the air guide plate is controlled to be the second air guide plate angle.

5. The method according to claim 4, characterized in that Also includes: If the absolute value of the difference between the first air guide plate angle and the maximum wind sweeping angle or the minimum wind sweeping angle is greater than the third preset angle, the wind sweeping speed of the air guide plate is increased by the preset wind sweeping speed when passing through the third preset air guide plate angle range when sweeping the air; wherein the third preset air guide plate angle range is the first air guide plate angle ± the fourth preset angle.

6. The method according to claim 4, characterized in that Also includes: If the absolute value of the difference between the first air guide plate angle and the maximum wind sweeping angle or the minimum wind sweeping angle is less than or equal to a third preset angle, a new wind sweeping angle range is determined so that the first air guide plate angle is not within the new wind sweeping angle.

7. The method according to claim 1, characterized in that Also includes: Get the speed of the internal fan; When the absolute value of the difference between the rotation speed of the internal fan at the current moment and the rotation speed at the previous moment is greater than the preset rotation speed, it is determined that the cause of the uneven air output is the unstable rotation speed of the internal fan.

8. The method according to claim 1, characterized in that Also includes: Get the actual air volume of the internal fan; Determine the air volume attenuation rate based on the actual air volume, where the air volume attenuation rate = |actual air volume - current wind gear preset air volume | / current wind gear preset air volume; When it is continuously detected that the air volume attenuation rate is greater than or equal to the preset air volume attenuation rate, or when the absolute value of the difference in the air volume attenuation rates is greater than the preset air volume attenuation rate difference for more than a preset number of times, it is determined that the cause of the uneven air outlet is dirt and blockage of the air conditioner, wherein the difference in the air volume attenuation rates = the air volume attenuation rate at the current moment - the air volume attenuation rate at the previous moment.

9. The method according to claim 1, characterized in that: The controlling the air conditioner to execute a corresponding mode based on the cause of uneven air flow includes: When the uneven air output is caused by unstable rotation speed of the internal fan, the air conditioner is controlled to execute an anti-rotation speed fluctuation control mode to stabilize the rotation speed by increasing control accuracy.

10. The method according to claim 1, characterized in that The controlling the air conditioner to execute a corresponding mode based on the cause of uneven air flow includes: When the uneven air output is caused by dirt and blockage of the air conditioner, the air conditioner is controlled to execute an evaporator self-cleaning mode.

11. An air conditioning control device, characterized in that: include: The uneven air flow judging module is used to judge whether the uneven air flow is caused by unstable speed of the internal fan or dirty air conditioner blockage when uneven air flow is detected; an air conditioner corresponding mode execution module, configured to control the air conditioner to execute a corresponding mode based on the cause of the uneven air flow; The air conditioner preset action execution module is used to control the air conditioner to execute a preset action to make the air outlet of the air conditioner uniform if uneven air outlet is still detected after the corresponding mode is executed.

12. An air conditioning control system, characterized in that: include: at least one processor and at least one memory; The memory stores executable instructions of the processor; The processor is configured to execute the method according to any one of claims 1-10.

13. An air conditioner, characterized in that: The method according to any one of claims 1 to 10 is used.

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