Air treatment equipment, control method and storage medium

Abstract

The invention discloses air treatment equipment, a control method and a storage medium, and the control method comprises the steps that a driving signal is sent to a resonance actuator so that the resonance actuator can drive an air guide piece to resonate; measuring a feedback current generated by the direct piezoelectric effect of the resonant actuator; the voltage of a driving signal is adjusted according to the feedback current, and the voltage has the trend of increasing along with reduction of the feedback current. According to the technical scheme, the technical problem that when the air outlet amount of existing air treatment equipment changes, the air feeling adjusting effect becomes poor is solved.

Description

Technical Field

[0001] The present invention relates to the field of electrical equipment, and in particular to an air treatment device, a control method and a storage medium. Background Art

[0002] At present, some researchers have conducted some research on the wind feeling adjustment and natural wind simulation characteristics of air conditioners, and have made some progress. For example, natural wind simulation and wind feeling adjustment technologies can be roughly divided into the following categories:

[0003] 1) Motor control method: collect wind speed sample signals of natural wind in nature and import them into the computer; the PLC (programmable logic control device) is connected to the computer to store the control signal of simulating natural wind in its memory, and the PLC analog output template converts the digital signal in the PLC memory into an analog signal; the input end of the frequency converter is connected to the converted analog signal, and the frequency conversion signal at its output end is connected to the motor of the variable speed fan, so that the fan changes its speed according to the change of the control signal to generate simulated natural wind.

[0004] However, the above motor control method has too high requirements on motor performance, high noise, and reduces product reliability. Since the wind speed sample signal of natural wind is constantly changing, the motor speed is also constantly changing. Ordinary motors cannot respond quickly, and often require high-performance DC brushless motor drives, which increases the cost of air conditioners. In addition, the rapid change of motor speed drives the rapid change of fan speed, which produces a large abnormal sound and increases the noise value of the whole machine when the air conditioner is running. Finally, when the motor drives the fan to run, due to the rapid change of speed, the motor and fan are easily damaged, the life is greatly reduced, and the reliability is reduced.

[0005] 2) The air guide plate control method receives the natural wind fluctuation curve and adjusts the opening of the air guide plate according to the natural wind fluctuation curve, thereby changing the area of ​​the air outlet of the air conditioner to adjust the air volume / wind feeling. However, the above air guide plate control method is similar to the motor control method, and also requires a high-performance DC brushless motor to quickly respond to the wind speed sample signal of the natural wind and drive the air guide plate to rotate, which is costly; the air guide plate angle changes rapidly and generates a lot of noise; and the life of the motor and air guide plate is reduced.

[0006] 3) Add a spoiler, specifically install a spoiler inside the air outlet of the air conditioner. The wind feeling can be adjusted by the raised part on the surface of the spoiler and the rotation of the spoiler in the air duct. However, the above method of adding a spoiler causes serious air volume attenuation because the spoiler is installed inside the air outlet of the air conditioner; and no very reliable model is proposed, making it difficult to achieve true natural wind simulation.

[0007] 4) Adding a wind dispersing structure, specifically, installing a wind dispersing structure on the air guide plate of the air conditioner, the wind dispersing structure comprising a plurality of wind guide rings formed on the wind dispersing plate and a plurality of rotors arranged opposite to the wind guide rings. Under the action of the driving device, the rotors can rotate, thereby adjusting the airflow passing through the wind dispersing structure. However, the above method of adding a wind dispersing structure causes serious attenuation of the air volume because the wind dispersing structure is installed at the air outlet of the air conditioner; when the driving device drives the rotors to rotate, the rotation speed of the rotors is too low, for example, often less than 1Hz, making it difficult to effectively adjust the wind feeling; when the rotors rotate, friction noise between components is easily generated.

[0008] 5) Setting a microporous windshield, specifically setting a microporous windshield at the air outlet of the air conditioner, with a plurality of air dispersion holes on the windshield to allow airflow to pass through. The windshield can soften the incoming airflow, making the delivered air softer. However, the above method of setting a microporous windshield, because the microporous windshield is installed at the air outlet of the air conditioner, causes serious air volume attenuation; and can only soften the airflow, and it is difficult to achieve a variety of wind sensations.

[0009] The wind sense adjustment technology described above has a poor wind sense adjustment effect when the air volume at the air outlet of the air conditioner changes. For example, when the air volume at the air outlet of the air conditioner is large, the wind sense adjustment effect will be weakened. Summary of the invention

[0010] The main purpose of the present invention is to solve the technical problem that the wind sense adjustment effect of the existing air handling equipment becomes worse when the air volume changes.

[0011] To achieve the above purpose, the present application proposes a control method for air handling equipment.

[0012] A control method for an air handling device, wherein an air outlet of the air handling device is provided with an air guide component, wherein the air guide component includes one or a plurality of air guide vanes arranged at intervals, wherein the air guide component also includes a driving device, wherein the driving device includes a resonant actuator, wherein the resonant actuator is a piezoelectric material, and wherein the resonant actuator can drive the air guide vanes to resonate to achieve turbulence; the control method includes:

[0013] Sending a driving signal to the resonant actuator so that the resonant actuator drives the air guide piece to resonate;

[0014] Measuring the feedback current generated by the positive piezoelectric effect of the resonant actuator;

[0015] The voltage and / or the frequency of the driving signal are adjusted according to the feedback current, wherein the voltage and / or the frequency tends to increase as the feedback current decreases.

[0016] In an illustrative embodiment, the voltage is negatively correlated with the feedback current; and / or the frequency is negatively correlated with the feedback current.

[0017] In an illustrative embodiment, adjusting the voltage of the driving signal according to the feedback current includes:

[0018] adjusting the voltage to a preset voltage corresponding to the current range to which the feedback current belongs;

[0019] The value range of the feedback current includes a plurality of current ranges, and the plurality of current ranges correspond to a plurality of preset voltages respectively. The smaller the current value, the larger the preset voltage corresponding to the current range.

[0020] In an illustrative embodiment, the frequency of the driving signal is the resonant frequency of the wind guide component, and the frequency of the driving signal tends to increase as the feedback current decreases.

[0021] In an illustrative embodiment, adjusting the frequency of the driving signal according to the feedback current includes:

[0022] Adjusting the frequency of the driving signal to a resonant frequency corresponding to the current range to which the feedback current belongs;

[0023] The value range of the feedback current includes a plurality of current ranges, and the plurality of current ranges respectively correspond to a plurality of resonant frequencies of the air guide component. The smaller the current value, the greater the order of the resonant frequency corresponding to the current range.

[0024] In an illustrative embodiment, the plurality of current ranges include a first current range, a second current range, and a third current range, the current values ​​of which increase in sequence;

[0025] The multiple resonant frequencies include a first-order resonant frequency, a second-order resonant frequency, and a third-order resonant frequency, the frequencies of which increase in sequence;

[0026] The first current range, the second current range and the third current range correspond to the third-order resonant frequency, the second-order resonant frequency and the first-order resonant frequency respectively.

[0027] In an illustrative embodiment, it also includes:

[0028] After adjusting the voltage and / or frequency of the driving signal, the step of measuring the feedback current is re-entered.

[0029] In an exemplary embodiment, adjusting the voltage and / or frequency of the driving signal according to the feedback current includes:

[0030] The voltage of the driving signal is adjusted according to the feedback current, and the frequency of the driving signal is kept constant;

[0031] Alternatively, the voltage and frequency of the driving signal are adjusted simultaneously according to the feedback current;

[0032] Alternatively, the frequency of the driving signal is adjusted according to the feedback current, and the voltage of the driving signal is kept constant.

[0033] In an illustrative embodiment, the control method further includes:

[0034] Based on the feedback current being greater than a current threshold, the resonant actuator is turned off.

[0035] The present application also proposes a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the control method of the air treatment equipment as described above is implemented.

[0036] The present application also proposes an air treatment device, which comprises:

[0037] The housing is provided with an air outlet;

[0038] An air guide component is arranged at the air outlet, comprising one or a plurality of air guide plates arranged at intervals and a driving device, wherein the driving device comprises a resonant actuator, the resonant actuator is a piezoelectric material, and the resonant actuator can drive the air guide plates to resonate to achieve turbulence;

[0039] a current detection component, electrically connected to the resonant actuator, for detecting a feedback current generated by a positive piezoelectric effect of the resonant actuator; and

[0040] The control device is electrically connected to the current detection component and the resonant actuator, and is configured to execute the control method of the air treatment device as described above.

[0041] The air handling equipment in the present application is controlled by this control method, which determines the strength of the wind speed at the air outlet by detecting the feedback current of the resonant actuator, and adjusts the deformation of the resonant actuator by adjusting the voltage and / or frequency of the driving signal to adapt to the wind speed at the air outlet, so as to maintain a better wind feeling adjustment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0043] Figure 1 This is a three-dimensional schematic diagram of an air treatment device in an embodiment of the present application;

[0044] Figure 2 is a three-dimensional schematic diagram of an air guide component in an embodiment of the present application;

[0045] Figure 3 A partial schematic diagram of an air guide component in an embodiment of the present application;

[0046] Figure 4 This is a flow chart of a control method for air handling equipment in an embodiment of the present application.

[0047] Description of Figure Numbers:

[0048] 100. Indoor unit; 1. Casing; 11. Air outlet; 2. Air guide component; 21. Air guide assembly; 211. Driving device; 212. Air guide vane; 22. Connecting piece.

[0049] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0055] This embodiment proposes an air treatment device, which can take in and out air, and has unlimited air treatment functions, for example, it can perform at least one of temperature adjustment, humidification, purification, circulation, etc. on the air. The air treatment device includes but is not limited to an air conditioner, and the air treatment device can also be a purifier, a humidifier, a fan, etc. After the specific type of the air treatment device is determined, those skilled in the art can know other components of the air treatment device, which will not be described here.

[0056] like Figure 1 As shown, Figure 1 The structure of an air treatment device 100 in this embodiment is shown. The air treatment device 100 includes a housing 1, an air supply component, an air guide component 2, an adjustment component, a current detection component and a control device.

[0057] The top of the housing 1 is provided with an air inlet, and the bottom of the housing 1 is provided with an air outlet 11. The air outlet 11 can be configured as a strip, or a straight strip. An air supply flow channel is provided in the housing 1, and the two ends of the air supply flow channel are respectively connected to the air inlet and the air outlet 11. The air supply component can be a fan, such as a cross-flow fan, an axial flow fan, or a centrifugal fan.

[0058] The air supply component is arranged on the air supply flow channel. When the air supply component is in operation, air can be sucked in from the air inlet, and then output from the air outlet 11 after flowing through the air supply flow channel, so that the air outlet 11 can supply air outwards.

[0059] The regulating component can be arranged on the air supply flow channel. The regulating component can be a temperature regulating component, a humidity regulating component or a purification component. The temperature regulating component is used to regulate the temperature of the air flow passing through, the humidity regulating component is used to regulate the humidity of the air flow passing through, and the purification component temperature regulating component is used to filter and purify the air flow passing through.

[0060] In this embodiment, the regulating component is a temperature regulating assembly, the temperature regulating assembly includes a first heat exchanger, and the air handling device 100 also includes a second heat exchanger and a compressor. The first heat exchanger is used to exchange heat with indoor air. The second heat exchanger is used to exchange heat with outdoor air. The compressor, the first heat exchanger and the second heat exchanger are connected to each other through a refrigerant pipeline. The compressor can drive the refrigerant to circulate between the first heat exchanger and the second heat exchanger, thereby realizing indoor and outdoor air heat exchange.

[0061] The first heat exchanger can be arranged on the air supply channel. The airflow exchanges heat with the first heat exchanger when flowing through the first heat exchanger. When the air handling device is in the heating mode, the first heat exchanger transfers heat to the airflow, so that the air outlet 11 can convey hot air to the outside. When the air handling device is in the cooling mode, the first heat exchanger transfers cold air to the airflow, so that the air outlet 11 can convey cold air to the outside.

[0062] like Figure 1 , 2 As shown, the air guide component 2 is arranged at the air outlet 11, and the air guide component 2 is used to disturb the wind sent out by the air supply component. The air guide component 2 serves as an air supply terminal device of the air handling equipment to regulate the wind feel of the air supply. The air guide component 2 includes a plurality of air guide components 21 and a connector 22. The connector 22 is configured as a strip, which may be a straight strip. The connector 22 is connected to the housing 1, and the extension direction of the connector 22 is the same as the extension direction of the air outlet 11. A plurality of air guide components 21 are connected to the connector 22, and are arranged in sequence along the connector 22.

[0063] like Figure 3 As shown, the air guide assembly 21 includes a driving device 211 and an air guide plate 212. The driving device 211 is respectively connected to the connecting member 22 and the air guide plate 212. The connecting member 22 and the air guide plate 212 are respectively arranged on opposite sides of the driving device 211. The air guide plate 212 is constructed as a sheet structure. One end of the air guide plate 212 is connected to the driving device 211. The connecting member 22 can be connected above the air outlet 11, and the air guide plate 212 is located at the front end of the air outlet 11. The plate surface of the air guide plate 212 is perpendicular to the extension direction of the air outlet 11. A plurality of air guide assemblies 21 are arranged in sequence along the extension direction of the air outlet 11, and the intervals between two adjacent air guide assemblies 21 can be the same. The air guide plate 212 is used at the air outlet 11 at the air supply end of the air handling equipment to regulate the wind feeling, thereby achieving the adjustment of the air outlet effect.

[0064] The driving device 211 includes a resonant actuator. The resonant actuator can drive the air guide plate 212 to resonate to achieve turbulence. In other words, the resonant actuator has the ability to drive the air guide plate 212 to resonate. When the air guide plate 212 resonates, turbulence can be achieved, thereby improving the wind feeling of the air outlet. The resonant actuator can be connected to one end of the air guide plate 212.

[0065] It is understandable that "resonance" is also called "resonance". When the frequency of the driving force is equal to the natural frequency of the system, the amplitude of the forced vibration of the system is the largest. This phenomenon is called resonance. When the frequency of the external force is the same as or very close to the natural oscillation frequency of the system, the amplitude of the oscillation system increases sharply under the action of periodic external forces. The frequency when resonance occurs is called "resonance frequency". In addition, "natural frequency" is also called "natural frequency". When an object vibrates freely, its displacement changes with time according to the sine or cosine law. The frequency of vibration has nothing to do with the initial conditions, but is only related to the inherent characteristics of the system (such as mass, shape, material, etc.). It is called the natural frequency, and its corresponding period is called the natural period. The natural frequency has nothing to do with external excitation and is an inherent property of the structure. Regardless of whether the structure is excited by the outside world, the natural frequency of the structure exists. It is just that when there is external excitation, the structure produces a vibration response according to the natural frequency. In addition, "free vibration" refers to the vibration that occurs in a mechanical system after the excitation or constraint is removed. The vibration is maintained only by its elastic restoring force. When there is damping, the vibration gradually decays. The frequency of free vibration is determined only by the physical properties of the system itself, which is called the natural frequency of the system.

[0066] In simple terms, when the excitation frequency of the resonant actuator is the same as or close to the natural frequency of the air guide component 2, the resonance effect is utilized, and the amplitude of the air guide piece 212 will increase sharply, so that the air guide piece 212 can more effectively disturb the air flow and improve the wind feeling of the air outlet. The resonant frequency of the air guide component 2 is determined by the resonant actuator and the air guide piece 212. The size of the resonant actuator will affect the overall resonant frequency.

[0067] The resonant actuator is a piezoelectric material. A piezoelectric material is a device that uses the inverse piezoelectric effect of piezoelectric materials to convert electrical energy into mechanical energy output. When an alternating voltage is applied to the polarization direction of the piezoelectric material, the piezoelectric material will move in a certain direction (such as Figure 3 When the excitation frequency of the piezoelectric material is equal to or close to the natural frequency of the wind guide component 2, resonance (or resonance) occurs. At this time, the wind guide piece 212 (i.e. Figure 3 The amplitude of the vibration sheet (as shown) will increase sharply, so that the air guide sheet 212 can more effectively disturb the air flow and improve the wind feeling of the air outlet.

[0068] In some embodiments, the resonant frequency of the resonant actuator driving the air guide 212 to resonate is greater than or equal to 1 Hz. As a result, the air guide 212 can achieve a better turbulence effect and improve the wind feel of the air. However, the DC brushless motor and stepper motor used in general air conditioners cannot drive the air guide 212 to resonate with a resonant frequency greater than 1 Hz, and the air guide 212 cannot effectively turbulently improve the wind feel of the air.

[0069] The piezoelectric material piece may be a piezoelectric actuator or a piezoelectric sheet, for example, a piezoelectric ceramic. An alternating voltage is applied to the polarization direction of the piezoelectric material piece, and the piezoelectric material piece is deformed back and forth by utilizing the inverse piezoelectric effect of the piezoelectric material piece, thereby driving the air guide piece 212 to resonate and achieve the purpose of turbulence. The piezoelectric sheet is a sheet-like body formed by a piezoelectric material, such as a piezoelectric film. The piezoelectric film is a flexible, lightweight, and highly tough plastic film that can be made into objects of various thicknesses and larger areas. It is a type of piezoelectric material piece, and the piezoelectric film can be driven by alternating current to produce an inverse piezoelectric effect, thereby driving the air guide piece 212 to resonate.

[0070] In some embodiments, the resonant frequency of the resonant actuator driving the air guide plate 212 to resonate is greater than or equal to 1 Hz. Therefore, the air guide plate 212 can achieve a better turbulence effect and improve the wind feeling of the air outlet.

[0071] The resonant frequency of the resonant actuator driving the air guide piece 212 to resonate is 1 Hz-100 Hz. That is, a resonant actuator with a resonant frequency of 1 Hz-100 Hz (e.g., 1 Hz, 10 Hz, 20 Hz, 30 Hz, 40 Hz, 50 Hz, 60 Hz, 70 Hz, 80 Hz, 90 Hz, 100 Hz, etc.) can be selected as needed to drive the air guide piece 212 with a matching natural frequency to resonate, thereby meeting different requirements for airflow feel.

[0072] Furthermore, a resonant actuator with a resonant frequency of 10Hz-80Hz (e.g., 10Hz, 20Hz, 30Hz, 40Hz, 50Hz, 60Hz, 70Hz, 80Hz, etc.) can be selected to drive the air guide piece 212 with a matching natural frequency to resonate, thereby meeting different requirements for airflow feel. Of course, the present invention is not limited to this. In other embodiments, the resonant frequency of the resonant actuator driving the air guide piece 212 to resonate can also be greater than 100Hz, which will not be described in detail here.

[0073] The resonant actuator is a piezoelectric material. When an alternating voltage is applied in the polarization direction of the piezoelectric material, the piezoelectric material will undergo an inverse piezoelectric effect and produce periodic mechanical deformation in a certain direction. Resonance (or resonance) occurs only when the excitation frequency of the piezoelectric material is equal to or close to the natural frequency of the air guide plate 212. At this time, the vibration amplitude of the air guide plate 212 will increase sharply, so that the air guide plate 212 can more effectively disturb the airflow and improve the wind feel.

[0074] The current detection component is electrically connected to the resonant actuator, and the current detection component can be electrically connected to the opposite ends of the resonant actuator in the polarization direction. The current detection component is used to detect the size of the feedback current generated by the positive piezoelectric effect of the resonant actuator. When the resonant actuator is deformed, electric polarization will occur, converting mechanical energy into electrical energy, and the piezoelectric material will produce positive piezoelectric effect and generate equal positive and negative charges at the opposite ends in the polarization direction. When the resonant actuator is repeatedly deformed, the feedback current can be measured at the opposite ends of the polarization direction of the resonant actuator. The current detection component can be an ammeter or an impact galvanometer. Ammeters or impact galvanometers have high accuracy in measuring small currents.

[0075] The control device is electrically connected to the air supply component, the air guide component 2, the current detection component and the adjustment component. The control device is electrically connected to the opposite ends of the resonant actuator in the polarization direction. The control device controls the vibration amplitude and vibration frequency of the resonant actuator driving the air guide plate 212 to swing by sending a drive signal to the resonant actuator. The drive signal can be a voltage pulse signal, and the voltage pulse signal can be an AC voltage signal.

[0076] The control device controls the vibration amplitude of the air guide plate 212 by controlling the voltage amplitude of the driving signal. When the air outlet speed of the air handling device is the same, the greater the absolute value of the voltage of the driving signal, the greater the amplitude at which the resonant actuator drives the air guide plate 212 to swing when receiving the driving signal.

[0077] The control device controls the vibration frequency of the air guide blade 212 by controlling the frequency of the driving signal. For example, when the driving signal is a voltage pulse signal, the resonant actuator receives a pulse of the driving signal and drives the air guide blade 212 to swing to one side once. The swing direction is determined by the positive and negative of the pulse. When the pulse is a positive pulse, the air guide blade 212 swings to one side, and when the pulse is a negative pulse, the air guide blade 212 swings to the other side.

[0078] The control device can control the resonant actuator to swing the air guide plate 212 at a preset vibration amplitude and / or a preset frequency by sending a driving signal to the resonant actuator, so as to realize that the air treatment device outputs wind with different wind sensations. When the air guide plate 212 vibrates at different vibration frequencies and / or different vibration amplitudes, the air guide component 2 can process the airflow output by the air outlet 11 to form wind with different wind sensations, and the wind with different wind sensations has different wind speeds and / or turbulence. The air treatment device outputs wind with different wind sensations in different air supply modes. For example, after the air guide component 2 processes the airflow output by the air outlet 11, it can simulate wind with a natural wind sensation, wind without a wind sensation, and wind with a pulsating wind sensation.

[0079] However, the vibration amplitude of the air guide plate 212 is affected by the wind speed at the air outlet. The higher the wind speed at the air outlet, the greater the wind pressure on the air guide plate 212, the greater the resistance to the swing of the air guide plate 212, and the smaller the vibration amplitude of the air guide plate 212. The wind speed at the air outlet affects the vibration amplitude of the air guide plate 212, and further affects the wind feeling adjustment effect.

[0080] like Figure 4 As shown, this embodiment also proposes a control method for air treatment equipment, which is implemented based on the above air treatment equipment. The control method includes:

[0081] Step S1: The control device receives the start adjustment instruction and enters step S2;

[0082] The user can send the start adjustment instruction to the control device of the air handling device through a remote control or a mobile terminal, and the mobile terminal can be a mobile phone, a tablet computer or a smart speaker. The start adjustment instruction is used to instruct the resonant actuator to drive the air guide plate 212 to resonate, so as to change the airflow feeling of the air handling device.

[0083] Step S2: the control device sends a driving signal to the resonant actuator so that the resonant actuator drives the air guide plate 212 to resonate, and measures the feedback current generated by the positive piezoelectric effect of the resonant actuator;

[0084] The driving signal is a pulse voltage signal. The frequency and voltage of the driving signal are both preset values. The frequency of the driving signal is equal to the resonant frequency of the air guide component 2. The air guide component 2 usually has multiple vibration frequencies, which are arranged in order from small to large. The vibration frequencies of the air guide component 2 are respectively the first-order resonant frequency, the second-order resonant frequency, the third-order resonant frequency... and the n-th order resonant frequency. The air guide plate 212 is preferably an air guide plate 212 whose first-order resonant frequency and second-order resonant frequency are both within 100 Hz. The frequency of the driving signal is equal to any one of the first-order resonant frequency to the n-th order resonant frequency, and the initial frequency of the driving signal is preferably equal to the first-order resonant frequency.

[0085] The control device sends a driving signal to the resonant actuator, and the resonant actuator drives the air guide blade 212 to swing at the same frequency as the driving signal. The excitation frequency applied by the resonant actuator to the air guide blade 212 is equal to the resonant frequency of the air guide component 2, and the air guide blade 212 resonates. The driving signal includes a preset initial voltage and an initial frequency.

[0086] When the resonant actuator receives the driving signal, the inverse piezoelectric effect occurs and the resonant actuator is deformed, and the deformation of the resonant actuator itself drives the air guide plate 212 to vibrate. The greater the deformation amplitude of the resonant actuator, the more positively correlated it is with the vibration amplitude of the air guide plate 212. The deformation amplitude of the resonant actuator is positively correlated with the vibration amplitude of the air guide plate 212.

[0087] Since the driving signal periodically drives the resonant actuator to deform repeatedly, a positive piezoelectric effect occurs when the resonant actuator deforms, generating a feedback current. The control device detects the feedback current through a current detection component. The larger the deformation amplitude of the resonant actuator, the larger the feedback current, and there is a positive correlation between the deformation amplitude of the resonant actuator and the feedback current.

[0088] The greater the wind speed at the air outlet 11, the greater the wind pressure on the air guide plate 212, the smaller the deformation amplitude of the air guide plate 212, the smaller the deformation amplitude of the resonant actuator, and the smaller the feedback current generated by the resonant actuator. Conversely, the smaller the wind speed at the air outlet 11, the greater the feedback current generated by the resonant actuator. There is a negative correlation between the feedback current and the wind speed at the air outlet 11, and the magnitude of the feedback current can reflect the magnitude of the wind speed at the air outlet 11 of the air handling device.

[0089] Step S3: the control device adjusts the voltage of the driving signal according to the measured feedback current, and the voltage of the driving signal tends to increase as the feedback current decreases.

[0090] The target vibration amplitude is the target value that the vibration amplitude of the air guide piece 212 is to reach. When the vibration amplitude of the air guide piece 212 reaches the target vibration amplitude, the vibration amplitude of the air guide piece 212 matches the wind speed, and the wind sense adjustment effect of the air guide component is obvious. The target vibration amplitude can be determined according to the type of wind sense to be adjusted by the air handling device, and the target vibration amplitude required for different types of wind sense can be pre-calibrated.

[0091] When the vibration amplitude of the air guide plate 212 is maintained at the target vibration amplitude, the voltage of the driving signal tends to increase as the feedback current decreases. The corresponding relationship between the voltage of the driving signal and the feedback current when the vibration amplitude of the air guide plate 212 is maintained at the target vibration amplitude can be pre-calibrated.

[0092] The smaller the feedback current measured by the current detection component, the greater the current wind speed of the air outlet 11 of the air handling equipment, the greater the wind pressure borne by the air guide plate 212, the smaller the vibration amplitude of the air guide plate 212, and the worse the wind sense adjustment effect of the air guide component. At this time, the control device increases the deformation of the resonant actuator by increasing the voltage of the driving signal, so that the vibration amplitude of the air guide plate 212 is increased to close to or equal to the target vibration amplitude, and the wind sense adjustment effect of the air guide component is better.

[0093] On the contrary, the larger the feedback current measured by the current detection component is, the smaller the current wind speed of the air outlet 11 of the air handling equipment is, the smaller the wind pressure borne by the air guide plate 212 is, and the larger the vibration amplitude of the air guide plate 212 is. If the vibration amplitude of the air guide plate 212 is too large, the air guide component will be at risk of damage. At this time, the control device reduces the deformation of the resonant actuator by reducing the voltage of the driving signal, so that the vibration amplitude of the air guide plate 212 is reduced to close to or equal to the target vibration amplitude, thereby reducing the risk of damage to the resonant actuator while maintaining a good wind sense adjustment effect.

[0094] Therefore, the air treatment equipment can determine the wind speed at the air outlet 11 by detecting the feedback current of the resonant actuator, and adjust the deformation of the resonant actuator by adjusting the voltage of the driving signal to adapt to the wind speed at the air outlet 11, so that the vibration amplitude of the air guide plate 212 is close to or equal to the target vibration amplitude, so as to maintain a better wind feeling adjustment effect.

[0095] In an exemplary embodiment, in step S3, the voltage of the driving signal is negatively correlated with the feedback current.

[0096] Since the voltage of the driving signal is negatively correlated with the feedback current, a relationship curve between the voltage of the driving signal and the feedback current when the vibration amplitude of the air guide plate 212 is maintained at the target vibration amplitude can be pre-fitted. The control device can obtain the voltage of the driving signal corresponding to the feedback current based on the relationship curve between the voltage of the driving signal and the feedback current and the measured feedback current. The control device adjusts the voltage of the driving signal to the voltage corresponding to the feedback current, so that the vibration amplitude of the air guide plate 212 can be maintained at the target vibration amplitude.

[0097] In an illustrative embodiment, the value range of the feedback current includes multiple current ranges. The current ranges are continuous intervals. The current ranges do not overlap each other. The multiple current ranges are respectively corresponded to multiple preset voltages in advance, and the current range with a smaller current value in the multiple current ranges corresponds to a larger preset voltage.

[0098] For example, the multiple current ranges include a first current range, a second current range, and a third current range. The current values ​​of the first current range, the second current range, and the third current range increase in sequence. The first current range is greater than or equal to a and less than b, the second current range is greater than or equal to b and less than c, and the third current range is greater than or equal to c and less than d, wherein a<b<c<d.

[0099] The first current range may be a current value range of the feedback current generated by the positive piezoelectric effect of the resonant actuator when the wind speed at the air outlet of the air handling device is 80% to 100% of the maximum wind speed at the air outlet.

[0100] The second current range may be a current value range of the feedback current generated by the positive piezoelectric effect of the resonant actuator when the wind speed at the air outlet of the air handling device is 60% to 80% of the maximum wind speed at the air outlet.

[0101] The third current range may be a current value range of the feedback current generated by the positive piezoelectric effect of the resonant actuator when the wind speed at the air outlet of the air handling device is 40% to 60% of the maximum wind speed at the air outlet.

[0102] The plurality of preset voltages include a first preset voltage M1, a second preset voltage M2 and a third preset voltage M3. The first preset voltage M1>the second preset voltage M2>the third preset voltage M3.

[0103] The first current range corresponds to a first preset voltage M1 , the second current range corresponds to a second preset voltage M2 , and the third current range corresponds to a third preset voltage M3 .

[0104] Step S3 includes steps S31 to S33.

[0105] Step S31: the control device determines the current range to which the feedback current belongs according to the measured feedback current, and then proceeds to step S32;

[0106] Step S32: the control device obtains a preset voltage corresponding to the current range to which the feedback current belongs, and then proceeds to step S33;

[0107] Step S33: the control device adjusts the voltage of the driving signal to the preset voltage.

[0108] The preset voltage corresponding to the current average value of each current range when maintaining the vibration amplitude of the air guide plate 212 close to the target vibration amplitude can be pre-calibrated, and the smaller the current average value, the larger the preset voltage corresponding to the current range. When the feedback current falls into a current range, the voltage of the drive signal is adjusted to the preset voltage corresponding to the current range, so that the vibration amplitude of the air guide plate 212 is close to or equal to the target vibration amplitude.

[0109] For example, when the feedback current belongs to the first current range, the voltage of the driving signal is adjusted to the first preset voltage M1; when the feedback current belongs to the second current range, the voltage of the driving signal is adjusted to the second preset voltage M2; when the feedback current belongs to the third current range, the voltage of the driving signal is adjusted to the third preset voltage M3.

[0110] In an illustrative embodiment, the control method further includes: after completing step S3, entering step S2.

[0111] After adjusting the voltage of the driving signal according to the feedback current, the control device re-enters the step of measuring the feedback current generated by the positive piezoelectric effect of the resonant actuator.

[0112] In this way, the voltage of the driving signal can be negatively feedback regulated based on the feedback current, so that the vibration amplitude of the air guide plate 212 always remains close to or equal to the target vibration amplitude during the operation of the air guide component.

[0113] In an illustrative embodiment, step S3 also includes: the control device adjusts the frequency of the drive signal according to the magnitude of the feedback current, wherein the frequency of the drive signal is equal to the resonant frequency of the air guide component 2, and the frequency of the drive signal tends to increase as the feedback current decreases.

[0114] The air guide component 2 usually has multiple resonant frequencies, which are arranged in ascending order. The resonant frequencies of the air guide component 2 are respectively the first order resonant frequency, the second order resonant frequency, the third order resonant frequency... and the nth order resonant frequency. The frequency of the driving signal has a value range of the resonant frequency range of the air guide component 2, and the frequency of the driving signal can be equal to any one of the first order resonant frequency to the nth order resonant frequency.

[0115] The smaller the feedback current measured by the current detection component, the greater the current wind speed of the air outlet 11 of the air treatment equipment. At this time, the control device increases the vibration frequency of the air guide plate 212 by increasing the frequency of the driving signal, thereby enhancing the turbulence effect of the air guide plate 212 and further improving the wind feeling of the air outlet.

[0116] On the contrary, the larger the feedback current measured by the current detection component, the smaller the current wind speed of the air outlet 11 of the air treatment equipment. At this time, a better turbulence effect can be obtained without the need for high-frequency vibration of the air guide plate 212. At this time, the control device reduces the vibration frequency of the air guide plate 212 by reducing the frequency of the driving signal, which can extend the service life of the air guide plate 212 and the resonant actuator and reduce noise.

[0117] In an illustrative embodiment, the value range of the feedback current includes multiple current ranges. The current range is a continuous interval. The current ranges do not overlap each other. The multiple current ranges are respectively corresponded to the multiple resonant frequencies of the air guide component 2 in advance, and the current range with a smaller current value in the multiple current ranges corresponds to a larger order of the resonant frequency.

[0118] For example, the multiple current ranges include a first current range, a second current range, and a third current range. The current values ​​of the first current range, the second current range, and the third current range increase in sequence. The first current range is greater than or equal to a and less than b, the second current range is greater than or equal to b and less than c, and the third current range is greater than or equal to c and less than d, wherein a<b<c<d.

[0119] The resonant frequency of the air guide component 2 includes a first-order resonant frequency, a second-order resonant frequency, and a third-order resonant frequency. The frequencies of the first-order resonant frequency, the second-order resonant frequency, and the third-order resonant frequency increase in sequence.

[0120] The first current range corresponds to the third order resonant frequency, the second current range corresponds to the second order resonant frequency, and the third current range corresponds to the first order resonant frequency.

[0121] Step S3 also includes steps S34 to S36.

[0122] Step S34: the control device determines the current range to which the feedback current belongs according to the measured feedback current, and then proceeds to step S35;

[0123] Step S35: the control device obtains the vibration frequency of the air guide component 2 corresponding to the current range to which the feedback current belongs, and then proceeds to step S36;

[0124] Step S36: the control device adjusts the frequency of the driving signal to the resonant frequency of the air guide component 2.

[0125] When the feedback current belongs to the first current range, the frequency of the drive signal is adjusted to the third-order resonant frequency; when the feedback current belongs to the second current range, the frequency of the drive signal is adjusted to the second-order resonant frequency; when the feedback current belongs to the third current range, the frequency of the drive signal is adjusted to the first-order resonant frequency.

[0126] In an illustrative embodiment, the control method further includes step S2a and step S2b after step S2 and before step S3.

[0127] Step S2a: The control device determines whether the feedback current is greater than the first current threshold, and if so, proceeds to step S2b, otherwise, proceeds to step S3.

[0128] When the wind speed at the air outlet 11 of the air handling device is low to a certain extent, there is no need to use the wind guide component to disturb it, or even if the wind guide component is used to disturb the airflow output from the air outlet 11, the effect is not obvious. The value range of the first current threshold is the feedback current generated by the positive piezoelectric effect of the resonant actuator when the wind speed at the air outlet 11 of the air handling device is low enough that no disturbance is required. The first current threshold is a preset value.

[0129] The first current threshold may be the maximum current value of the current range with the largest current value. For example, the first current threshold is the maximum current value d of the third current range.

[0130] Step S2b: The control device turns off the resonant actuator.

[0131] When the feedback current is greater than the first current threshold, it can be confirmed that the wind speed at the air outlet 11 is so small that there is no need to use an air guide component to disturb it. The control device stops sending a drive signal to the resonant actuator to shut down the resonant actuator, thereby saving energy and reducing noise.

[0132] In an exemplary embodiment of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the control method described above in this specification is stored. In some possible implementations, various aspects of the present invention may also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps according to various exemplary implementations of the present invention described in the above "Exemplary Method" section of this specification.

[0133] A program product for implementing the above control method according to an embodiment of the present invention may adopt a portable compact disk read-only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto, and in this document, a readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, apparatus, or device.

[0134] The program product may use any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0135] Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0136] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0137] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the insurance customer computing device, partially on the insurance customer device, as a separate software package, partially on the insurance customer computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the insurance customer computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., through the Internet using an Internet service provider).

[0138] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be embodied.

[0139] In addition, although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.

[0140] Through the description of the above implementation methods, it is easy for those skilled in the art to understand that the example implementation methods described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation method of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including a number of instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the control method according to the implementation method of the present disclosure. The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A control method for air handling equipment, characterized in that: The air outlet of the air handling device is provided with an air guide component, the air guide component includes one or a plurality of air guide plates arranged at intervals, the air guide component also includes a driving device, the driving device includes a resonant actuator, the resonant actuator is a piezoelectric material, and the resonant actuator can drive the air guide plate to resonate to achieve turbulence; the control method includes: Sending a driving signal to the resonant actuator so that the resonant actuator drives the air guide piece to resonate; Measuring the feedback current generated by the positive piezoelectric effect of the resonant actuator; The voltage and / or the frequency of the driving signal are adjusted according to the feedback current, wherein the voltage and / or the frequency tends to increase as the feedback current decreases.

2. The control method according to claim 1, characterized in that: There is a negative correlation between the voltage and the feedback current; and / or there is a negative correlation between the frequency and the feedback current.

3. The control method according to claim 1, characterized in that: The step of adjusting the voltage of the driving signal according to the feedback current includes: adjusting the voltage to a preset voltage corresponding to the current range to which the feedback current belongs; The value range of the feedback current includes a plurality of current ranges, and the plurality of current ranges correspond to a plurality of preset voltages respectively. The smaller the current value, the larger the preset voltage corresponding to the current range.

4. The control method according to claim 1, characterized in that: The frequency of the driving signal is the resonance frequency of the air guide component, and the frequency of the driving signal tends to increase as the feedback current decreases.

5. The control method according to claim 4, characterized in that: The step of adjusting the frequency of the driving signal according to the feedback current comprises: Adjusting the frequency of the driving signal to a resonant frequency corresponding to the current range to which the feedback current belongs; The value range of the feedback current includes a plurality of current ranges, and the plurality of current ranges respectively correspond to a plurality of resonant frequencies of the air guide component. The smaller the current value, the greater the order of the resonant frequency corresponding to the current range.

6. The control method according to claim 5, characterized in that: The multiple current ranges include a first current range, a second current range and a third current range, the current values ​​of which increase in sequence; The multiple resonant frequencies include a first-order resonant frequency, a second-order resonant frequency, and a third-order resonant frequency, the frequencies of which increase in sequence; The first current range, the second current range and the third current range correspond to the third-order resonant frequency, the second-order resonant frequency and the first-order resonant frequency respectively.

7. The control method according to any one of claims 1 to 6, characterized in that: Also includes: After adjusting the voltage and / or frequency of the driving signal, the step of measuring the feedback current is re-entered.

8. The control method according to claim 1, characterized in that: Adjusting the voltage and / or frequency of the driving signal according to the feedback current includes: The voltage of the driving signal is adjusted according to the feedback current, and the frequency of the driving signal is kept constant; Alternatively, the voltage and frequency of the driving signal are adjusted simultaneously according to the feedback current; Alternatively, the frequency of the driving signal is adjusted according to the feedback current, and the voltage of the driving signal is kept constant.

9. The control method according to any one of claims 1 to 6, characterized in that: The control method further comprises: Based on the feedback current being greater than a current threshold, the resonant actuator is turned off.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the control method of the air treatment equipment according to any one of claims 1 to 9 is implemented.

11. An air treatment device, characterized in that: include: The housing is provided with an air outlet; An air guide component is arranged at the air outlet, comprising one or a plurality of air guide plates arranged at intervals and a driving device, wherein the driving device comprises a resonant actuator, the resonant actuator is a piezoelectric material, and the resonant actuator can drive the air guide plates to resonate to achieve turbulence; A current detection component, electrically connected to the resonant actuator, for detecting a feedback current generated by a positive piezoelectric effect of the resonant actuator; as well as A control device, electrically connected to the current detection component and the resonant actuator, is configured to execute the control method of the air treatment equipment according to any one of claims 1-9.

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