An air conditioner control method, device, system and air conditioner

Abstract

The application discloses an air conditioner control method, device and system and an air conditioner, and belongs to the air conditioner field. When it is detected that air outlet of the air conditioner is uneven, firstly, it is judged whether the reason for uneven air outlet is that the rotation speed of the inner air fan is unstable or the air conditioner is dirty and blocked. If yes, the air conditioner is controlled to execute a corresponding mode based on the reason for uneven air outlet. If no, or if the 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 uniform. Because there are many reasons for uneven air outlet in real conditions, only control is performed in the prior art without distinguishing the reasons, so that control needs to be performed every time, the steps are complicated, and even the uneven air outlet cannot be effectively eliminated, so that noise still exists. However, the application is controlled based on the reason for uneven air outlet, the uneven air outlet is effectively eliminated, noise is reduced, and user experience is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, and in particular, to an air conditioner control method, device, system and air conditioner. BACKGROUND

[0002] At present, users have higher and higher requirements for the use performance and use experience of air conditioners. In the process of air outlet of the air conditioner, since the wind flows from the external high-pressure area to the internal low-pressure area of the vortex, the airflow is turbulent, flows back from the air outlet to the air inlet, and causes uneven air outlet of the air conditioner. The uneven air outlet of the air conditioner produces noise and reduces the user experience. SUMMARY

[0003] In order to overcome the deficiencies of the prior art, the present application provides an air conditioner control method, device, system and air conditioner to solve the problem of noise produced by uneven air outlet of the existing air conditioner and reduced user experience.

[0004] The technical scheme adopted by the present application to solve its technical problems is:

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

[0006] When uneven air outlet of the air conditioner is detected, it is determined whether the cause of the uneven air outlet is unstable rotation speed of the inner fan or dirty blockage of the air conditioner;

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

[0008] If no or if the uneven air outlet is still detected after the corresponding mode is executed, the air conditioner is controlled to execute a preset action to make the air outlet of the air conditioner uniform.

[0009] Further, the control of the air conditioner to execute the preset action comprises:

[0010] When the air conditioner has an adjustable vortex tongue structure, the minimum point position of the inner machine air outlet with the minimum wind speed is obtained;

[0011] A target air duct cross section is determined based on the minimum point position, the target air duct cross section passes through the minimum point position and is perpendicular to the axial direction of the through-flow fan blade;

[0012] The vector wind speed of the target air duct cross section is obtained, and a streamline diagram is obtained based on the vector wind speed;

[0013] The vortex core position of the eccentric vortex in the through-flow impeller is determined based on the streamline diagram;

[0014] The profile of the vortex tongue is changed to control the positive change of the vortex core position, the positive change being that the distance to the center position of the inner machine air outlet cross section becomes larger, the shortest distance to the inner circumferential line of the through-flow impeller becomes smaller, and the distance to the windward surface of the vortex tongue becomes smaller.

[0015] Further, further comprising:

[0016] When the structure of the vortex tongue is adjusted, the angle of the air deflector is controlled within a first preset angle range, and the air volume and noise value of the air outlet of the inner fan and the angle of the air deflector are acquired in real time; wherein the first preset angle range is the initial air deflector angle ± the first preset angle, and the initial air deflector angle is the air deflector angle when the structure of the vortex tongue is adjusted;

[0017] A candidate air deflector angle in the real-time air deflector angle is determined, the absolute value of the difference between the real-time air volume corresponding to the candidate air deflector 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 deflector 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 volume 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 control of the air conditioner to perform a preset action comprises:

[0020] The angle of the air deflector is controlled within a second preset angle range, and the air volume and noise value of the air outlet of the inner fan and the angle of the air deflector are acquired in real time; wherein the second preset angle range is the first air deflector angle ± the second preset angle, and the first air deflector angle is the air deflector angle when the air outflow is detected to be uneven;

[0021] A candidate air deflector angle in the real-time air deflector angle is determined, the absolute value of the difference between the real-time air volume corresponding to the candidate air deflector angle and the first 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 deflector angle and the first noise value is less than the preset noise value, wherein the first air volume is the air volume when the air outflow is detected to be uneven, and the first noise value is the noise value when the air outflow is detected to be uneven;

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

[0023] Further, further comprising:

[0024] If the absolute value of the difference between the first deflector angle and the maximum or minimum sweeping angle is greater than a third preset angle, the sweeping speed is increased by a preset sweeping speed when the deflector sweeps through a third preset deflector angle range during the sweeping of the deflector, wherein the third preset deflector angle range is the first deflector angle ± a fourth preset angle.

[0025] Further, further comprising:

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

[0027] Further, further comprising:

[0028] The speed of the inner fan is obtained.

[0029] When the absolute value of the difference between the speed of the inner fan at the current time and the speed at the previous time is greater than a preset speed, it is determined that the cause of the uneven air outlet is unstable speed of the inner fan.

[0030] Further, further comprising:

[0031] The actual air volume of the inner fan is obtained.

[0032] The air volume decay rate is determined based on the actual air volume, and the air volume decay rate = | actual air volume - current air volume preset air volume | / current air volume preset air volume.

[0033] When the air volume decay rate is continuously detected to be greater than or equal to a preset air volume decay rate, or when the absolute value of the difference between the air volume decay rates is greater than a preset air volume decay rate difference value for more than a preset number of times, it is determined that the cause of the uneven air outlet is dirty and blocked air conditioner, wherein the difference between the air volume decay rates = current air volume decay rate - previous air volume decay rate.

[0034] Further, the air conditioner is controlled to execute a corresponding mode based on the cause of the uneven air outlet, comprising:

[0035] When the cause of the uneven air outlet is unstable speed of the inner fan, the air conditioner is controlled to execute a control mode to prevent speed fluctuation to stabilize the speed by increasing the control accuracy.

[0036] Further, the air conditioner is controlled to execute a corresponding mode based on the cause of the uneven air outlet, comprising:

[0037] When the cause of the uneven air outlet is dirty and blocked air conditioner, the air conditioner is controlled to execute an evaporator self-cleaning mode.

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

[0039] The air outlet unevenness reason judgment module is configured to, when detecting air outlet unevenness of the air conditioner, judge whether the air outlet unevenness reason is unstable rotation speed of the inner air fan or dirty blockage of the air conditioner.

[0040] The air conditioner corresponding mode execution module is configured to, if yes, control the air conditioner to execute a corresponding mode based on the air outlet unevenness reason.

[0041] The air conditioner preset action execution module is configured to, if no or if the air outlet unevenness is still detected after executing the corresponding mode, control the air conditioner to execute a preset action to make the air outlet of the air conditioner uniform.

[0042] In a third aspect, an air conditioner 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 air conditioner control method described above.

[0046] In a fourth aspect, an air conditioner is provided, which applies the air conditioner control method described above.

[0047] Advantages:

[0048] The technical solution of the present application provides an air conditioner control method, device, system and air conditioner. When detecting air outlet unevenness of the air conditioner, first judge whether the air outlet unevenness reason is unstable rotation speed of the inner air fan or dirty blockage of the air conditioner, if yes, control the air conditioner to execute a corresponding mode based on the air outlet unevenness reason, if no, or if the air outlet unevenness is still detected after executing the corresponding mode, control the air conditioner to execute a preset action to make the air outlet of the air conditioner uniform. Because there are many reasons for air outlet unevenness in reality, the prior art only controls without distinguishing the reasons, so it needs to control every time, which is complicated and even cannot effectively eliminate air outlet unevenness, resulting in noise. The present application controls based on the reason of air outlet unevenness, effectively eliminates air outlet unevenness, reduces noise and greatly improves user experience. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

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

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

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

[0053] Figure 4 is a comparison schematic diagram of the smooth vortex tongue structure and the toothed vortex tongue structure windward surface transverse curve provided by an embodiment of the present application;

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

[0055] Figure 6 is a specific air conditioner control method flowchart provided by an embodiment of the present application;

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

[0057] Figure 8 is an air conditioner control device system schematic diagram provided by an embodiment of the present application. DETAILED DESCRIPTION

[0058] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application are described in detail below with reference to the drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0059] With reference to Figure 1 , an air conditioner control method is provided by an embodiment of the present application, comprising:

[0060] S11: When detecting air conditioner air outlet unevenness, determining whether the cause of the air outlet unevenness is inner fan rotating speed instability or air conditioner dirt blockage.

[0061] In one embodiment, the rotating speed of the inner fan is acquired; when the absolute value of the difference between the rotating speed of the inner fan at the current moment and the rotating speed at the previous moment is greater than a preset rotating speed, it is determined that the cause of the air outlet unevenness is inner fan rotating speed instability. In addition, whether the cause of the air outlet unevenness is inner fan rotating speed instability can also be determined according to other manners, such as according to inner fan power change or current / voltage change.

[0062] In another embodiment, the actual air volume of the inner fan is acquired;

[0063] determining a wind volume attenuation rate based on the actual wind volume, the wind volume attenuation rate = | actual wind volume - current wind volume preset value | / current wind volume preset value;

[0064] When the wind volume attenuation rate is continuously detected to be greater than or equal to a preset wind volume attenuation rate, or when the absolute value of the difference of the wind volume attenuation rate is greater than a preset wind volume attenuation rate difference value for more than a preset number of times, it is determined that the cause of the uneven air outlet is air conditioner dirt blockage.

[0065] In actual implementation, it can also be determined whether the air conditioner is dirty and blocked according to the wind volume attenuation value. When the wind volume attenuation value is greater than or equal to a preset wind volume attenuation value, or when the absolute value of the difference of the wind volume attenuation value is greater than a preset wind volume attenuation value difference value for more than a preset number of times, it is determined that the cause of the uneven air outlet is air conditioner dirt blockage. The difference of the wind volume attenuation value = current wind volume attenuation value - previous wind volume attenuation value.

[0066] As a preferred implementation of an embodiment of the present application, it further comprises:

[0067] The absolute value of the difference of the wind volume attenuation rate is used to determine the size of the preset number of times. The greater the absolute value of the difference of the wind volume attenuation rate, the smaller the preset number of times.

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

[0069] When the cause of the uneven air outlet is unstable internal fan speed, the air conditioner is controlled to execute an anti-speed fluctuation control mode to stabilize the speed by increasing the control accuracy. For example, the target value of the internal fan speed is set as Nt, and the actual internal fan speed Na is obtained by a stroboscope or a speed sensor. The speed error e = Nt - Na is calculated. The controller calculates the correction amount u according to the speed error. The proportional integral control formula can be used as follows: u = Kp * e + Ki * ∫edt + Kd * de / dt, where Kp, Ki, and Kd are the proportional, integral, and differential coefficients, ∫edt represents the integral of the speed error, and de / dt represents the differential of the speed error. The controller output correction amount 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 outlet caused by speed fluctuation.

[0070] When the cause of the uneven air outlet is air conditioner dirt blockage, the air conditioner is controlled to execute an evaporator self-cleaning mode. The self-cleaning mode is not limited in the present application.

[0071] S13: If no 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.

[0072] Generally, the inner machine of air conditioner has been optimized to a suitable degree in the design stage to avoid the problem of uneven air outlet. The air duct structure of the product after leaving the factory is fixed and cannot be adjusted. If the uneven air outlet caused by the air duct structure itself occurs, it is difficult to handle.

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

[0074] When the air conditioner has an adjustable volute structure, a minimum point position with the minimum air outlet speed of the inner machine is obtained; wherein the adjustable volute structure has at least two volute forms, for example, Figure 2 and as shown in Figure 3 has two forms of smooth surface and teeth (in fact, different forms can be set, which is not limited in the present application), and both forms can be moved and expanded through a transmission structure, automatically adjusted through the volute structure, change the volute profile, and the windward surface horizontal curve of the two forms of smooth surface and teeth is as shown in Figure 4 .

[0075] For example, the windward surface of the smooth volute is a straight entity in the longitudinal direction; the windward surface of the toothed volute is uniformly distributed with several teeth along the longitudinal direction, the distance between adjacent two teeth is 2.5 mm, the tooth surface width is 2 mm, the maximum height difference of the concave-convex tooth surface is 8.1 mm, and the concave-convex tooth surface is designed as a specific profile in the horizontal direction. The above parameters are generally adjusted and designed according to simulation and actual test data.

[0076] In practice, one volute can also be set, but the distance between different parts of the volute and the cross-flow fan blade can be adjusted. In this way, when the distance changes, the volute profile also changes.

[0077] Based on the minimum point position, a target air duct cross section is determined, the target air duct cross section passes through the minimum point position and is perpendicular to the axial direction of the cross-flow fan blade; the minimum point position is the point position with the worst wind speed, and the flow line diagram obtained by the target air duct cross section can more clearly obtain the vortex core position.

[0078] The vector wind speed of the target air duct cross section is obtained, and the flow line diagram is obtained based on the vector wind speed; the vector wind speed includes not only the size of the wind speed but also the direction of the wind. The flow line diagram is used to show the direction and path of fluid flow, and each flow line represents the flow path of fluid at a certain time, which can be drawn and generated by measuring and collecting the speed and direction of fluid in the flow field.

[0079] Based on the flow line diagram, the vortex core position of the eccentric vortex in the cross-flow impeller is determined; as shown in Figure 5 , the vortex center position is the vortex core position.

[0080] The profile of the vortex tongue is changed to control the positive change of the vortex core position, the positive change being that the center position of the inner air outlet section becomes larger, the shortest distance to the inner circumferential line of the tubular impeller becomes smaller, and the distance to the windward surface of the vortex tongue becomes smaller. At this time, the backflow area on the air outlet side becomes smaller, the airflow trajectory becomes smooth and smooth, the air outlet airflow is continuous and stable, and the air outlet airflow is more uniform, solving the air outlet unevenness caused by the air duct itself.

[0081] Further, if the vortex tongue structure is adjusted, the baffle angle is also automatically adjusted. The first wind speed sensor and the noise sensor also arranged at the air outlet are used for detection, and under the condition that the air outlet flow variation is within the threshold value and the noise variation value is within the threshold value, the baffle angle that meets the above conditions and has the maximum air volume is selected as the new set angle in this mode. Specifically, after the structure of the vortex tongue is adjusted, the baffle is controlled to rotate within a first preset angle range, and the air outlet flow and noise value of the inner air fan and the baffle angle are obtained in real time; wherein the first preset angle range is the initial baffle angle ± the first preset angle, and the initial baffle angle is the baffle angle when the structure of the vortex tongue is adjusted.

[0082] A candidate baffle angle in the real-time baffle angle is determined, the absolute value of the difference between the real-time air outlet flow corresponding to the candidate baffle angle and the initial air outlet flow is less than the preset air outlet flow, and the absolute value of the difference between the real-time noise value corresponding to the candidate baffle angle and the initial noise value is less than the preset noise value, wherein the initial air outlet flow is the air outlet flow 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 baffle angle with the maximum air outlet flow is determined as the target baffle angle, and the angle of the baffle is controlled to be the target baffle angle.

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

[0085] The baffle is controlled to rotate within a second preset angle range, and the air outlet flow and noise value of the inner air fan and the baffle angle are obtained in real time; wherein the second preset angle range is the first baffle angle ± the second preset angle, and the first baffle angle is the baffle angle when the air outlet unevenness is detected.

[0086] A candidate baffle angle in the real-time baffle angle is determined, the absolute value of the difference between the real-time air outlet flow corresponding to the candidate baffle angle and the first air outlet flow is less than the preset air outlet flow, and the absolute value of the difference between the real-time noise value corresponding to the candidate baffle angle and the first noise value is less than the preset noise value, wherein the first air outlet flow is the air outlet flow when the air outlet unevenness is detected, and the first noise value is the noise value when the air outlet unevenness is detected.

[0087] determining the candidate deflector angle with the largest air volume as a second deflector angle, and controlling the angle of the deflector to be the second deflector angle.

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

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

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

[0091] It should be noted that in the embodiment, if the absolute value of the difference between the first deflector angle and the maximum or minimum air sweeping angle is greater than the third preset angle, no control can be performed, or the control can be performed according to the scheme provided in the above embodiment.

[0092] It should be noted that the implementation manner of the embodiment is performed on the basis that the air conditioner does not have an adjustable vortex tongue structure or although it has an adjustable vortex tongue structure, the user is not allowed to adjust the vortex tongue structure.

[0093] The air conditioner control method provided in the embodiment of the application, when detecting that the air outlet of the air conditioner is uneven, first determines whether the reason for the uneven air outlet is that the rotation speed of the inner fan is unstable or that the air conditioner is dirty and blocked, if yes, controls the air conditioner to execute the corresponding mode based on the reason for the uneven air outlet, if not, or if the uneven air outlet is still detected after the corresponding mode is executed, controls the air conditioner to execute a preset action, so that the air outlet of the air conditioner is uniform. Because there are many reasons for the uneven air outlet in reality, the prior art only controls without distinguishing the reasons, so that the control needs to be performed every time, the steps are complicated, and even the uneven air outlet cannot be effectively eliminated, resulting in noise. The application controls based on the reason for the uneven air outlet, effectively eliminates the uneven air outlet, reduces noise, and greatly improves user experience.

[0094] In order to more clearly illustrate the scheme of the application, a specific air conditioner control method is provided as follows, as shown in Figure 6 The method comprises the following steps:

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

[0096] Suppose that the indoor fan speed of the air conditioner at the set air volume is N0. At this time, by monitoring the speed fluctuation of the indoor fan, it is determined whether the speed is always kept within N0±30r (if it is not within N0±30r, it indicates that the actual running speed of the motor and the target speed input by the controller have a large error, the controller logic is written incorrectly, or the motor itself has a problem, which is generally found and solved in the early development stage) and within the speed range of Nn+1-Nn<15r. If Nn+1-Nn>15r occurs and the occurrence frequency is not less than 1, it is determined that the uneven air outlet is caused by the unstable speed of the indoor unit. The next step is to enter the anti-speed fluctuation control mode to stabilize the speed by increasing the control accuracy and solve the uneven air outlet caused by the speed fluctuation.

[0097] When the air conditioner is running at a set air volume, define the clearance d1 between the cross-flow fan blade and the volute, the clearance d2 between the cross-flow fan blade and the volute tongue, select the maximum value d=max{d1, d2} between the two clearances, the angle α formed by the upper edge of the volute and the axis of the cross-flow fan blade and the upper edge of the volute tongue, the outer circumferential radius r of the fan blade, and the axial length L of the cross-flow fan blade. Then set the inlet cross section as a circular arc l with the fan blade axis as the center, the radius R=r+d, and the central angle α, and the length L to form a curved surface. The second wind speed sensor arranged between the evaporator and the cross-flow fan blade can detect the wind speed passing through the inlet cross section. The actual air volume of the curved surface can be calculated by the integral formula Q=∫F·ds. The air volume attenuation rate is | actual air volume-current air volume preset value | / current air volume preset value. If it is detected that the air volume attenuation rate continuously occurs for ≥15%, or under the condition of detecting the stable speed, the difference between the air volume attenuation rates before and after 60s is ≥8% and the frequency is not less than 4, it indicates that the air conditioner has a dirty blockage phenomenon. The next step is to issue a self-cleaning instruction to the controller to make the air conditioner enter the evaporator self-cleaning mode to clean the dust and other impurities on the evaporator and solve the uneven air outlet caused by the dirty blockage.

[0098] When the above two measures do not improve, the point where the minimum wind speed of the outlet section monitored by the first wind speed sensor is located and the air duct section formed perpendicular to the axial direction of the cross-flow fan blade are used to collect the vector wind speed on the air duct section by the third wind speed sensor, to obtain a streamline diagram, determine the vortex core position of the eccentric vortex in the cross-flow impeller, and set the distance between the vortex core position and the center position of the outlet section as x, the shortest distance between the vortex core position and the inner circumferential line of the cross-flow impeller as y, and the distance between the vortex core position and the windward surface of the volute tongue as z. The air conditioning system preferably has a movable volute tongue structure, which has two forms of smooth surface and tooth shape, and both forms can be moved and expanded through a transmission structure. The vortex core position of the eccentric vortex is positively changed by automatically adjusting and changing the volute tongue profile through the volute tongue structure: farther away from the outlet end, closer to the inner circumferential line, 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 backflow area on the outlet side becomes smaller, the airflow trajectory becomes smooth and smooth, the outlet airflow is continuous and stable, and the air conditioning system solves the problem of uneven air outlet caused by the air duct itself.

[0099] Further, if the volute tongue structure is adjusted, the deflector angle is also automatically adjusted. The first wind speed sensor and a noise sensor also arranged at the outlet are used for detection. Under the condition that the change amount of the outlet air volume is within 20 m3 / h and the noise change value is within 0.2 dB, the deflector is increased by 1° each time on the basis of the original angle, and the maximum angle range before and after the change is within ±10°. The deflector angle with the largest air volume that meets the above conditions is selected as the new set angle in this mode.

[0100] If the above method of changing the volute tongue structure is not considered, when the air duct structure is unchanged, the deflector angle and the rotation speed before and after the deflector passes through a specific angle can also be adjusted. The deflector angle detected when the air outlet is uneven is set as W0, and the new deflector angle is set as W1. The deflector is moved upward by 2° each time on the basis of W0, and after reaching the maximum adjustable angle 1 (Wmin=W0-10°), if there is still uneven air outlet, the deflector is first reset to W0 and then moved downward by 2° each time on the basis of W0, until the maximum adjustable angle 2 (Wmax=W0+10°) is reached, that is, W0-10°≤W1≤W0+10°. After determining the new deflector angle W1, if the angle W0 with uneven air outlet is within the up-down sweepable angle range and differs from the maximum sweepable angle / the minimum sweepable angle by 3° or less, the up-down sweepable angle range is updated, so that W0 is not within the new up-down sweepable angle range. If the angle W0 with uneven air outlet is within the up-down sweepable angle range and differs from the maximum sweepable angle / the minimum sweepable angle by more than 3°, the deflector is controlled to sweep faster by 20 ms when passing through the range of [W0-1°, W0+1°].

[0101] The specific control method provided by the embodiment of the application can solve the problem of uneven air outlet caused by unstable motor speed, dirty blockage of the indoor unit and the like in the operation of the air conditioning system, analyze the cause of uneven air outlet by detecting the motor speed, the air inlet volume attenuation rate, the air outlet speed, the eccentric vortex core position and the like, and execute targeted instruction measures (anti-speed fluctuation control mode, evaporator self-cleaning mode, air deflector fine adjustment mode and the like) to solve the problem, improve the experience of the user, and improve the quality of the air conditioner.

[0102] Based on the same inventive concept, as shown in Figure 7 The application further provides an air conditioner control device 70, which comprises:

[0103] An air outlet unevenness cause judgment module 71 is configured to, when detecting that the air conditioner has uneven air outlet, judge whether the cause of the uneven air outlet is unstable speed of the indoor fan or dirty blockage of the air conditioner.

[0104] In one embodiment, the speed of the indoor fan is acquired.

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

[0106] In another embodiment, the actual air volume of the indoor fan is acquired.

[0107] The air volume attenuation rate is determined based on the actual air volume, and the air volume attenuation rate = | actual air volume - current air volume preset value | / current air volume preset value.

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

[0109] An air conditioner corresponding mode execution module 72 is configured to, if yes, control the air conditioner to execute a corresponding mode based on the cause of the uneven air outlet.

[0110] In one embodiment, the control of the air conditioner to execute a corresponding mode based on the cause of the uneven air outlet comprises:

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

[0112] In another embodiment, the control of the air conditioner to execute a corresponding mode based on the cause of the uneven air outlet comprises:

[0113] When the air conditioner is dirty, the air conditioner is controlled to perform an evaporator self-cleaning mode.

[0114] The air conditioner preset action execution module 73 is configured to control the air conditioner to perform a preset action to make the air conditioner blow air evenly if the air conditioner is not clean or if the air conditioner still detects uneven air blowing after performing the corresponding mode.

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

[0116] When the air conditioner has an adjustable vortex tongue structure, a minimum point position with the minimum air speed at the air outlet of the indoor unit is obtained;

[0117] A target air duct cross section is determined based on the minimum point position, the target air duct cross section passes through the minimum point position and is perpendicular to the axial direction of the cross-flow impeller;

[0118] The vector wind speed of the target air duct cross section is obtained, and a streamline diagram is obtained based on the vector wind speed;

[0119] The vortex core position of the eccentric vortex in the cross-flow impeller is determined based on the streamline diagram;

[0120] The profile of the vortex tongue is changed to control the vortex core position to change positively, the positive change being that the distance to the center position of the air outlet cross section of the indoor unit becomes larger, the shortest distance to the inner circumferential line 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 angle of the air deflector is controlled within a first preset angle range, and the air volume and noise value of the air outlet of the indoor air fan and the angle of the air deflector are obtained in real time, wherein the first preset angle range is the initial air deflector angle ± the first preset angle, and the initial air deflector angle is the angle of the air deflector when the structure of the vortex tongue is adjusted.

[0122] A candidate air deflector angle in the real-time air deflector angle is determined, the absolute value of the difference between the real-time air volume corresponding to the candidate air deflector angle and the initial air volume being less than a preset air volume, and the absolute value of the difference between the real-time noise value corresponding to the candidate air deflector angle and the initial noise value being less than a 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 maximum air volume 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, the control of the air conditioner to perform a preset action includes:

[0125] control the rotation of the air deflector in a second preset angle range, and obtain the air volume and noise value of the air outlet of the inner air fan and the angle of the air deflector in real time; wherein the second preset angle range is the first air deflector angle ± the second preset angle, and the first air deflector angle is the angle of the air deflector when the uneven air outflow is detected;

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

[0127] determine the candidate air deflector angle with the largest air volume as the second air deflector angle, and control the angle of the air deflector to be the second air deflector angle.

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

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

[0130] The air conditioner control device provided by the embodiments of the present application, when detecting uneven air outflow of the air conditioner, first determines whether the cause of the uneven air outflow is unstable rotation of the inner air fan or dirty blockage of the air conditioner, and if so, controls the air conditioner to execute the corresponding mode based on the cause of the uneven air outflow, and if not, or if the uneven air outflow is still detected after executing the corresponding mode, controls the air conditioner to execute a preset action to make the air outflow of the air conditioner uniform. Because there are many causes of uneven air outflow in reality, the prior art only controls without distinguishing the causes, so that control needs to be performed every time, which is tedious, and even cannot effectively eliminate uneven air outflow, resulting in noise. The present application controls based on the cause of uneven air outflow, effectively eliminates uneven air outflow, reduces noise, and greatly improves user experience.

[0131] Based on the same inventive concept, as shown in Figure 8 The present application also provides an air conditioner control system 80, which comprises:

[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 conditioner control method provided by the above-described embodiments.

[0135] The air conditioner control system provided by the embodiments of the present application stores executable instructions of the processor in the memory. When the executable instructions are executed, the processor can, when detecting that the air outlet of the air conditioner is uneven, first determine whether the reason for the uneven air outlet is unstable rotation speed of the inner fan or dirty blockage of the air conditioner. If yes, the air conditioner is controlled to execute the corresponding mode based on the reason for the uneven air outlet. If no, or if the uneven air outlet is still detected after the corresponding mode is executed, the air conditioner is controlled to execute a preset action, so as to make the air outlet of the air conditioner uniform. Because there are many reasons for the uneven air outlet in reality, the prior art only controls without distinguishing the reasons, so that the control needs to be performed every time, the steps are complicated, and the uneven air outlet cannot be effectively eliminated, resulting in noise. The present application controls based on the reason for the uneven air outlet, effectively eliminates the uneven air outlet, reduces noise, and greatly improves user experience.

[0136] Based on the same inventive concept, the present application further provides an air conditioner applying the air conditioner control method provided by the above-described embodiments.

[0137] The air conditioner provided by the embodiments of the present application applies the air conditioner control method provided by the above-described embodiments, can, when detecting that the air outlet of the air conditioner is uneven, first determine whether the reason for the uneven air outlet is unstable rotation speed of the inner fan or dirty blockage of the air conditioner. If yes, the air conditioner is controlled to execute the corresponding mode based on the reason for the uneven air outlet. If no, or if the uneven air outlet is still detected after the corresponding mode is executed, the air conditioner is controlled to execute a preset action, so as to make the air outlet of the air conditioner uniform. Because there are many reasons for the uneven air outlet in reality, the prior art only controls without distinguishing the reasons, so that the control needs to be performed every time, the steps are complicated, and the uneven air outlet cannot be effectively eliminated, resulting in noise. The present application controls based on the reason for the uneven air outlet, effectively eliminates the uneven air outlet, reduces noise, and greatly improves user experience.

[0138] It should be noted that, in the description of the present 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 the present application, unless otherwise specified, the meaning of "a plurality of" is at least two.

[0139] It can be understood that the same or similar parts in the above-described embodiments can be mutually referred to, and the contents not described in detail in some embodiments can be referred 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 internal fan speed or air conditioner obstruction; If so, controlling the air conditioner to execute a corresponding mode based on the cause of the uneven air flow; If not, or if uneven airflow is still detected after executing the corresponding mode, controlling the air conditioner to execute a preset action to make the air flow of the air conditioner uniform; The controlling the air conditioner to perform a preset action includes: When the air conditioner has an adjustable vortex structure, obtaining the minimum point where the wind speed at the indoor unit air outlet is the lowest; Determining 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 velocity of the target air duct cross section, and obtaining a streamline diagram based on the vector wind velocity; determining a vortex core position of an eccentric vortex in a 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, 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 line of the cross-flow impeller becomes smaller, and the distance to the windward surface of the vortex tongue becomes smaller.

2. The method according to claim 1, 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 internal fan outlet, 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; 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 and an initial air volume corresponding to the candidate air deflector angle is less than a preset air volume, and an absolute value of a difference between a real-time noise value and an initial noise value corresponding to the candidate air deflector angle is less than a preset noise value, wherein the initial air volume is the air volume when the structure of the vortex tongue is fully adjusted; and the initial noise value is the noise value when the structure of the vortex tongue is fully 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.

3. The method according to claim 1, wherein: The controlling the air conditioner to perform a preset action includes: Controlling the rotation of the air deflector within a second preset angle range, and obtaining in real time the air volume and noise value of the internal fan outlet, as well as the air deflector angle; wherein the second preset angle range is the first air deflector angle ± the second preset angle, and the first air deflector angle is the air deflector angle when uneven air flow 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 the air volume when uneven air flow is detected; and the first noise value is the noise value when uneven air flow is detected; The candidate air deflector angle with the largest air output is determined as the second air deflector angle, and the angle of the air deflector is controlled to be the second air deflector angle.

4. The method according to claim 3, characterized in that Also includes: 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 the third preset angle, the air sweeping speed of the air guide plate is increased by the preset air sweeping speed when passing through the third preset air guide plate angle range when the air is swept; wherein the third preset air guide plate angle range is the first air guide plate angle ± the fourth preset angle.

5. The method according to claim 3, characterized in that Also includes: If the absolute value of the difference between the first air guide plate angle and the maximum wind sweep angle or the minimum wind sweep angle is less than or equal to a third preset angle, a new wind sweep angle range is determined so that the first air guide plate angle is not within the new wind sweep angle.

6. 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 current rotation speed of the internal fan 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.

7. The method according to claim 1, characterized in that Also includes: Get the actual air volume of the internal fan; Determine an air volume attenuation rate based on the actual air volume, where: air volume attenuation rate = actual air volume - current wind speed preset air volume / current wind speed 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 air conditioning blockage, wherein the difference in air volume attenuation rates = the air volume attenuation rate at the current moment - the air volume attenuation rate at the previous moment.

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

9. The method according to claim 1, characterized in that The controlling the air conditioner to execute a corresponding mode based on the uneven air output reason 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.

10. 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 internal fan speed or air conditioner dirt 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; an air conditioner preset action execution module, configured to control the air conditioner to execute a preset action to make the air discharge uniform if uneven air discharge is still detected or if uneven air discharge is still detected after executing the corresponding mode; The controlling the air conditioner to perform a preset action includes: When the air conditioner has an adjustable vortex tongue structure, the minimum point position at the indoor unit air outlet with the minimum wind speed is obtained; the target air duct section is determined based on the minimum point position, and the target air duct section passes through the minimum point position and is perpendicular to the axial direction of the crossflow fan blade; the vector wind speed of the target air duct section is obtained, and a streamline diagram is obtained based on the vector wind speed; the vortex core position of the eccentric vortex in the crossflow impeller is determined based on the streamline diagram; 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 indoor unit air outlet section becomes larger, the shortest distance to the inner circumference line of the crossflow impeller becomes smaller, and the distance to the windward surface of the vortex tongue becomes smaller.

11. 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 to 9.

12. An air conditioner, characterized in that: The method according to any one of claims 1 to 9 is used.

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