CN113587381B - Method of controlling fan motor of air conditioner, air conditioner and computer-readable storage medium - Google Patents

Method of controlling fan motor of air conditioner, air conditioner and computer-readable storage medium Download PDF

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CN113587381B
CN113587381B CN202110768114.0A CN202110768114A CN113587381B CN 113587381 B CN113587381 B CN 113587381B CN 202110768114 A CN202110768114 A CN 202110768114A CN 113587381 B CN113587381 B CN 113587381B
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fan motor
rotating speed
air conditioner
smin
smax
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CN113587381A (en
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岳元龙
尹发展
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Hisense Air Conditioning Co Ltd
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Hisense Air Conditioning Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/30—Velocity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Fluid Mechanics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

The invention discloses a method for controlling a fan motor of an air conditioner, the air conditioner and a computer readable storage medium, wherein the method for controlling the fan motor of the air conditioner comprises the following steps: detecting a starting instruction of a fan motor; controlling the fan motor to start, wherein the fan motor is controlled according to a preset starting rotating speed within a first preset time period; wherein (Smax + Smin)/2 is less than or equal to 2 (Smax + Smin)/3, smax is the maximum allowable rotating speed of the fan motor, and Smin is the minimum allowable rotating speed of the fan motor. The method and the air conditioner improve the reliability of starting in relatively high headwind or tailwind and at different rotating speeds, and improve the starting performance.

Description

Method of controlling fan motor of air conditioner, air conditioner and computer-readable storage medium
Technical Field
The present invention relates to the field of refrigeration equipment technology, and in particular, to a method for controlling an air conditioner fan motor, and an air conditioner and a non-transitory computer storage medium.
Background
The air conditioner is provided with fan motors such as an indoor fan motor and an outdoor fan motor, the fan motors are set to different target rotating speeds according to control requirements and serve as starting rotating speeds and adjusting targets, the air conditioner is complex in environment, the starting rotating speeds of the fan motors are different greatly, if the fan motors are started, the starting performances of the fan motors in various environments and various rotating speeds need to be simulated and verified, the workload is large, omission is easy to occur, and the failure rate of the fan motors is increased. In addition, the fan motor may be out of control due to an external force after the fan motor is started, so that reliability of the fan motor is reduced. Therefore, the starting performance of the fan motor is yet to be further improved.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, an object of the present invention is to provide a method for controlling an air conditioner fan motor, which can improve the starting stability and starting performance of the air conditioner fan motor.
The second purpose of the invention is to provide an air conditioner.
A third object of the invention is to propose a non-transitory computer-readable storage medium.
In order to achieve the above object, a method for controlling a fan motor of an air conditioner according to an embodiment of a first aspect of the present invention includes: detecting a starting instruction of a fan motor; controlling the fan motor to start, wherein the fan motor is controlled according to a preset starting rotating speed within a first preset time period; wherein (Smax + Smin)/2 is less than or equal to 2 (Smax + Smin)/3, smax is the maximum allowable rotating speed of the fan motor, and Smin is the minimum allowable rotating speed of the fan motor.
According to the method for controlling the fan motor of the air conditioner, the fan motor is started at the preset starting rotating speed which is relatively large and high in reliability within the first preset time period before the fan motor is started, and the value of the preset starting rotating speed is set to be between 2/3 of the middle value of the highest allowable rotating speed and the lowest allowable rotating speed of the system running rotating speed, so that the fan motor can be started at a large moment and reaches the preset starting rotating speed, the starting reliability under the conditions of large upwind or downwind and different rotating speeds is improved, and the starting performance is improved.
In some embodiments, the maximum allowable rotational speed and the minimum allowable rotational speed satisfy: 2 (Smax + Smin)/3 + (Smax + Smin)/4 is less than or equal to Smax; (Smax + Smin)/2- (Smax + Smin)/4 ≧ Smin.
In some embodiments, the method further comprises: determining that the fan motor reaches a preset starting rotating speed; acquiring an ambient temperature; and adjusting the rotating speed of the fan motor according to the environment temperature.
In some embodiments, adjusting the speed of the fan motor based on the ambient temperature comprises: determining a target temperature interval in which the environment temperature is; obtaining a first fan rotating speed regulating quantity according to the target temperature interval; and adjusting the rotating speed of the fan motor according to the first fan rotating speed adjusting quantity.
In some embodiments, the method further comprises: determining that the time for adjusting the rotating speed of the fan motor according to the environment temperature reaches a second preset time period; acquiring the actual rotating speed of the fan motor at a preset period; obtaining a second fan rotating speed regulating quantity according to the actual rotating speed and the target rotating speed; and adjusting the actual rotating speed of the fan motor according to the second fan rotating speed adjusting quantity until the actual rotating speed reaches the target rotating speed.
In some embodiments, obtaining a second fan speed adjustment based on the actual speed and a target speed comprises: performing PID adjustment according to the actual rotating speed and the target rotating speed to obtain an initial fan rotating speed adjustment amount; obtaining a load coefficient according to a preset rotating speed interval where the actual rotating speed of the fan motor is located; and calculating a quotient value of the initial fan rotating speed regulating quantity and the load coefficient to serve as the second fan rotating speed regulating quantity. Therefore, the stability of speed regulation under different system loads can be optimized.
In some embodiments, the method further comprises: detecting that the fan motor is abnormally stopped, and controlling the fan motor to restart; recording the accumulated times of abnormal halt of the fan motor; and determining that the accumulated times reach a preset time threshold value in the third time period, and controlling the whole air conditioner to stop. So that the fault tolerance of the fan motor can be improved.
In some embodiments, the method further comprises: and if the accumulated times in the third duration are determined to be smaller than the preset times threshold, subtracting 1 from the accumulated times.
In order to achieve the above object, an air conditioner according to an embodiment of a second aspect of the present invention includes: an indoor fan motor and an outdoor fan motor; a processor and a memory communicatively coupled to the processor; wherein the memory stores therein a computer program executable by the processor, and the processor implements the method of controlling an air conditioner fan motor to control at least one of the indoor fan motor and the outdoor fan motor when executing the computer program.
According to the air conditioner provided by the embodiment of the invention, the computer program which can be executed by the processor is stored in the memory, and when the processor executes the computer program, the method for controlling the fan motor of the air conditioner can be realized, so that the reliability of the starting of the fan motor can be improved, and the starting performance can be improved.
In addition, the rotating speed regulating quantity can be corrected according to the environmental temperature when the fan motor normally operates, so that the speed regulation stability under different load conditions is optimized, and the fault tolerance of the fan is improved.
To achieve the above object, a non-transitory computer readable storage medium according to an embodiment of the third aspect of the present invention stores thereon a computer program that, when executed by a processor, implements the method of controlling an air conditioner fan motor.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a method of controlling an air conditioner fan motor according to an embodiment of the present invention;
fig. 2 is a flowchart of a method of controlling an air conditioner fan motor according to another embodiment of the present invention;
fig. 3 is a flowchart of a method of controlling an air conditioner fan motor according to still another embodiment of the present invention;
fig. 4 is a block diagram of an air conditioner according to an embodiment of the present invention.
Reference numerals:
an air conditioner 1;
an indoor fan motor 11, an outdoor fan motor 12, a processor 13, and a memory 14.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
The direct current fan motor of the air conditioner is internally provided with a drive, namely a motor drive module and a motor body which are integrally packaged, and is externally provided with a drive, namely the motor drive and the motor body are separated. The built-in driving motor controls the rotating speed of the motor by controlling the output voltage, and the external driving motor directly adjusts the PWM duty ratio to adjust the motor binding. The two motor controls are essentially identical except for the motor user control variables.
The main part of the air conditioner is a compressor, the speed regulation of a fan motor usually adopts a coarse regulation method, and the same speed regulation method is adopted under different loads, so that the fan motor is easy to fluctuate or stop abnormally. The embodiment of the invention provides a method for controlling a fan motor of an air conditioner, which mainly comprises the steps of starting and regulating the speed of the fan motor, and designing an abnormal shutdown fault-tolerant method of the fan motor, so that the frequent starting and stopping of a whole system are avoided, and the user experience is improved.
A method of controlling an air conditioner fan motor according to an embodiment of the present invention will be described with reference to fig. 1 to 3.
In the embodiment of the invention, the air conditioner comprises an indoor fan motor and an outdoor fan motor, and the method for controlling the fan motor of the air conditioner in the embodiment of the invention can be suitable for the indoor fan motor and also suitable for the outdoor fan motor.
Fig. 1 is a flowchart of a method of controlling an air conditioner fan motor according to an embodiment of the present invention, which includes at least the following steps S1 and S2, as shown in fig. 1.
S1, detecting a starting instruction of a fan motor.
Specifically, the user can set up the air conditioner parameter through the APP that loads on remote controller or the intelligent terminal to send start instruction to the air conditioner, air conditioner controller receives start instruction control air conditioner and starts, and under the condition that satisfies the fan motor and start, sends start instruction and gives fan motor.
And S2, controlling the fan motor to start, wherein the fan motor is controlled according to a preset starting rotating speed within a first preset time.
Specifically, the air conditioner satisfies a fan motor start condition, and the fan motor is started in response to a fan motor start instruction.
In an embodiment, the fan motor may be a direct current fan motor, in the drive control logic, the direct current fan motor may be in a state of reverse rotation, static state, or forward rotation when being started, and a control strategy that has a response for each case is provided, and the fan motor can be caused to operate in forward rotation under any case. Therefore, in the embodiment of the present invention, the target rotation speed in the starting stage of the fan motor is set to two stages.
After the fan motor is controlled to be started, within a first preset time period, for example, a time T1 before, a fixed target rotation speed is Sstart = [ (Smax + Smin)/2,2 (Smax + Smin)/3 ], and the target rotation speed is set as a preset starting rotation speed, that is, the preset starting rotation speed satisfies: (Smax + Smin)/2 ≦ 2 (Smax + Smin)/3, wherein Smax is the maximum allowable rotating speed of the fan motor, and Smin is the minimum allowable rotating speed of the fan motor.
According to the method for controlling the fan motor of the air conditioner, the fan motor is started at the preset starting rotating speed which is relatively large and high in reliability within the time T1 before the fan motor is started, and the value of the preset starting rotating speed is set to be between 2/3 of the middle value of the highest allowable rotating speed and the lowest allowable rotating speed of the system operation rotating speed, so that the fan motor can be started at a large moment and reaches the preset starting rotating speed, and the reliability of starting in a large upwind or downwind direction and at different rotating speeds is improved.
In the embodiment of the invention, the highest allowable rotating speed and the lowest allowable rotating speed meet the following requirements:
2(Smax+Smin)/3+(Smax+Smin)/4≤Smax；
(Smax+Smin)/2-(Smax+Smin)/4≥Smin。
the values of the maximum allowable rotating speed and the minimum allowable rotating speed are limited, so that the value of the preset starting rotating speed is relatively large, and the starting reliability of the fan motor is improved.
Further, as shown in fig. 2, the method for controlling the air conditioner fan motor according to the embodiment of the present invention further includes the steps of:
and S3, determining that the fan motor reaches a preset starting rotating speed.
And S4, acquiring the ambient temperature.
And S5, adjusting the rotating speed of the fan motor according to the environment temperature.
Determining that the starting time of the fan motor reaches a first preset time, that is, the fan motor reaches a preset starting rotating speed, acquiring the ambient temperature, for example, acquiring the outdoor ambient temperature for the control of the outdoor fan motor, or acquiring the indoor ambient temperature for the control of the indoor fan motor, and adjusting the rotating speed of the fan motor according to the ambient temperature.
Specifically, the fan motor enters the rotation speed transition region after the rotation speed of the fan motor reaches the preset starting rotation speed, for example, the rotation speed of the fan motor is adjusted according to the ambient temperature in a time period T1-T2, that is, a second preset time period, and the rotation speed of the fan motor is finely adjusted according to the ambient temperature in the time period, so that the rotation speed of the fan motor is maintained at about the preset starting rotation speed.
In an embodiment, for different operation modes, such as a heating or cooling mode, a corresponding relationship between the ambient temperature and the fan rotation speed adjustment amount may be obtained based on statistical analysis of test data, for example, when a mathematical relationship or a corresponding relationship table that the ambient temperature and the fan rotation speed adjustment amount satisfy is simulated, and the corresponding relationship table is stored in a processor or a controller of the air conditioner in advance. When the rotating speed of the fan motor is finely adjusted, a target temperature interval where the environment temperature is located is determined, a corresponding first fan rotating speed regulating quantity is obtained according to the target temperature interval, and the rotating speed of the fan motor is regulated according to the first fan rotating speed regulating quantity.
For example, since both the indoor unit and the outdoor unit of the air conditioner include the fan motor, and the operating environment of the outdoor fan motor is more complicated and worse than that of the indoor fan motor, the following describes the fine adjustment of the rotation speed of the fan motor according to the ambient temperature by taking the outdoor fan motor as an example.
TABLE 1 corresponding relationship between the rotating speed of outdoor fan motor and outdoor ambient temperature
Outdoor ambient temperature t Fan speed regulation (refrigeration) Outdoor ambient temperature t Fan speed regulation (heating)
t>＝T1 +(Smax+Smin)/4 t<＝T5 +(Smax+Smin)/4
T2<t<＝T1 +(Smax+Smin)/5 T5<t<＝T6 +(Smax+Smin)/5
T3<t<＝T2 0 T6<t<＝T7 0
T4<t<＝T3 -(Smax+Smin)/5 T7<t<＝T8 -(Smax+Smin)/5
t<＝T4 -(Smax+Smin)/4 T8<t -(Smax+Smin)/4
T1> T2 >.
For example, in the cooling mode, if the outdoor ambient temperature satisfies T2< T < = T1, the first fan rotation speed adjustment amount is + (Smax + Smin)/5, and (Smax + Smin)/5 is increased based on the current rotation speed. Or if the outdoor environment temperature meets T3< T < = T2, the current rotating speed is maintained, and fine adjustment is not needed. The fine tuning process in the heating mode is similar, i.e. the first wind speed and speed adjustment can be determined by referring to the relation between the outdoor environment temperature and the fan speed adjustment, and the speed of the outdoor fan motor can be adjusted.
The above is the control of the fan motor start stage, and as above, includes controlling the fan motor at the preset start rotating speed within a first preset time period after start, for example, the time T1 before start, and performing fine rotation speed adjustment within a second preset time period, for example, the time period T1 to T2 after start, and then the method for controlling the air conditioner fan motor according to the embodiment of the present invention enters the normal speed regulation stage of the fan motor.
As shown in fig. 2, the method of the embodiment of the present invention further includes the steps of:
and S6, determining that the time for adjusting the rotating speed of the fan motor according to the environment temperature reaches a second preset time.
And S7, acquiring the actual rotating speed of the fan motor in a preset period.
And S8, obtaining a second fan rotating speed regulating quantity according to the actual rotating speed and the target rotating speed.
And S9, adjusting the actual rotating speed of the fan motor according to the rotating speed adjusting quantity of the second fan until the actual rotating speed reaches the target rotating speed.
Wherein, in some embodiments, step S8 may include: and performing PID adjustment according to the difference value between the target rotating speed and the actual rotating speed, wherein the input quantity of the PID controller is the rotating speed difference, the output quantity is the fan rotating speed adjustment quantity, for example, the adjustment period, namely the preset period is set as T, and the PID adjustment is performed on the fan motor by obtaining the actual rotating speed and the target rotating speed every T time until the fan motor reaches the target rotating speed.
Further, the rotation speed of the fan motor may represent the magnitude of the system load, for example, if the rotation speed of the fan motor is high, the system load is large, and if the rotation speed of the fan motor is low, the system load is small, which is triggered from the viewpoint of ensuring the reliability of the system, in some embodiments of the present invention, the load factor correction may be performed on the basis of PID adjustment, as shown in fig. 3, and step S8 may further include the following steps:
and S81, performing PID (proportion integration differentiation) adjustment according to the actual rotating speed and the target rotating speed to obtain an initial fan rotating speed adjustment quantity.
For example, according toPID adjustment is carried out on the difference value between the target rotating speed and the actual rotating speed, the input quantity of the PID controller is the rotating speed difference, and the output quantity is the initial fan rotating speed adjustment quantity S Δ 。
And S82, obtaining a load coefficient according to a preset rotating speed interval where the actual rotating speed of the fan motor is located. In some embodiments, the load factor is greater than or equal to 1.
And S83, calculating a quotient value of the initial fan rotating speed regulating quantity and the load coefficient to serve as a second fan rotating speed regulating quantity.
For example, the load factor represented by the rotation speed of the fan motor is defined as K, K can be a value from K1 to K16, and if the value is larger, the load is larger, the adjustment quantity of the preset period to the second fan rotation speed of the fan motor is defined as S Δ /K。
Still taking the outdoor fan motor as an example, the rotation speed range corresponding to the load factor is shown in table 2.
TABLE 2 load factor and rotation speed gear corresponding relation table
Interval of rotation speed Coefficient of load
[Smin,Smin+(Smax-Smin)/16) K1
[Smin+(Smax-Smin)/16,Smin+2(Smax-Smin)/16) K2
[Smin+2(Smax-Smin)/16,Smin+3(Smax-Smin)/16) K3
[Smin+3(Smax-Smin)/16,Smin+4(Smax-Smin)/16) K4
[Smin+4(Smax-Smin)/16,Smin+5(Smax-Smin)/16) K5
[Smin+5(Smax-Smin)/16,Smin+6(Smax-Smin)/16) K6
[Smin+6(Smax-Smin)/16,Smin+7(Smax-Smin)/16) K7
[Smin+7(Smax-Smin)/16,Smin+8(Smax-Smin)/16) K8
[Smin+8(Smax-Smin)/16,Smin+9(Smax-Smin)/16) K9
[Smin+9(Smax-Smin)/16,Smin+10(Smax-Smin)/16) K10
[Smin+10(Smax-Smin)/16,Smin+11(Smax-Smin)/16) K11
[Smin+11(Smax-Smin)/16,Smin+12(Smax-Smin)/16) K12
[Smin+12(Smax-Smin)/16,Smin+13(Smax-Smin)/16) K13
[Smin+13(Smax-Smin)/16,Smin+14(Smax-Smin)/16) K14
[Smin+14(Smax-Smin)/16,Smin+15(Smax-Smin)/16) K15
[Smin+15(Smax-Smin)/16,Smin+16(Smax-Smin)/16) K16
Wherein K16> = K15> = K14> = K13> = so. > = K3> = K2> = K1> =1.
For example, when the actual rotational speed of the outdoor fan motor is [ Smin +14 (Smax-Smin)/16, smin +15 (Smax-Smin)/16), the load factor is K15, and the rotational speed adjustment amount of the second fan is S Δ /K。
Further, the method for controlling the air conditioner fan motor of the embodiment of the invention further comprises the step of fault tolerance of abnormal shutdown.
In some embodiments of the present invention, the fan motor is controlled to restart when an abnormal shutdown of the fan motor is detected; recording the accumulated times of abnormal halt of the fan motor; and determining that the accumulated times in the third time period reach a preset time threshold, controlling the whole air conditioner to stop, and carrying out alarm prompting. Or, if the accumulated number of times in the third duration is determined to be smaller than the preset number threshold, subtracting 1 from the accumulated number of times.
Specifically, when the fan motor is abnormally stopped, the whole air conditioner system continues to operate, and the fan motor is restarted according to the above starting process. Performing abnormal shutdown accumulation, and stopping the whole system when the accumulated number N of abnormal shutdown reaches N within the time T3; if the cumulative number of abnormal stops of the fan motor is smaller than N within the time T3, subtracting 1 from the current cumulative number of abnormal stops N to obtain N-1. And N is the maximum number of times of shutdown of the whole system caused by abnormal shutdown of the fan motor.
In summary, the method for controlling the fan motor of the air conditioner of the embodiment of the invention comprises a fan motor starting stage and a normal speed regulating stage, fault tolerance processing is carried out on abnormal shutdown, the starting performance of the fan motor is improved to the maximum extent, the speed regulating stability of the motor under different loads is optimized, and the fault tolerance of the fan motor is improved. The problem of frequent start and stop of an air conditioning system caused by abnormal shutdown of a fan motor is solved, the performance and reliability of the machine are improved, and the user experience is improved.
Based on the method for controlling the fan motor of the air conditioner in the above embodiment, the embodiment of the second aspect of the invention provides an air conditioner.
Fig. 4 is a block diagram of an air conditioner according to an embodiment of the present invention, and as shown in fig. 4, the air conditioner 1 includes an indoor fan motor 11, an outdoor fan motor 12, a processor 13, and a memory 14.
Wherein the memory 14 is communicatively connected to the processor 13, the processor 13 may be an indoor controller or an outdoor controller or a separately provided controller or other suitable processing unit. The processor 13 is connected to the indoor fan motor 11 and the outdoor fan motor 12, respectively.
The memory 14 stores therein a computer program executable by the processor 13, and the processor implements the method of controlling the air conditioner fan motor of the above embodiment when executing the computer program to control at least one of the indoor fan motor 11 and the outdoor fan motor 12.
An embodiment of the third aspect of the present invention also proposes a non-transitory computer storage medium having stored thereon a computer program that, when executed by a processor, implements the method of controlling an air conditioner fan motor of the above embodiment.
According to the air conditioner 1 of the embodiment of the present invention, the memory 14 stores a computer program executable by the processor 13, and the processor 13 can implement the method for controlling the fan motor of the air conditioner of the above embodiment when executing the computer program, so that the reliability of the start of the fan motor can be improved, and the start performance can be improved. In addition, the rotating speed regulating quantity can be corrected according to the environmental temperature when the fan motor normally operates, so that the speed regulation stability under different load conditions is optimized, and the fault tolerance of the fan is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A method of controlling a fan motor of an air conditioner, comprising:
detecting a starting instruction of a fan motor, wherein the state of the fan motor when the fan motor is started is any one of the conditions of reverse rotation, static rotation and forward rotation;
controlling the fan motor to start, wherein the fan motor is controlled according to a preset starting rotating speed within a first preset time length, the preset starting rotating speed is not less than (Smax + Smin)/2 and not more than 2 (Smax + Smin)/3, smax is the maximum allowable rotating speed of the fan motor, and Smin is the minimum allowable rotating speed of the fan motor;
the method further comprises the following steps:
determining that the fan motor reaches the preset starting rotating speed;
acquiring an ambient temperature;
and adjusting the rotating speed of the fan motor according to the environment temperature.
2. A method of controlling an air conditioner fan motor according to claim 1, wherein the maximum allowable rotation speed and the minimum allowable rotation speed satisfy:
2(Smax+Smin)/3+(Smax+Smin)/4≤Smax；
(Smax+Smin)/2-(Smax+Smin)/4≥Smin。
3. a method of controlling a fan motor of an air conditioner according to claim 1, wherein adjusting the rotation speed of the fan motor according to the ambient temperature includes:
determining a target temperature interval in which the environment temperature is;
obtaining a first fan rotating speed regulating quantity according to the target temperature interval;
and adjusting the rotating speed of the fan motor according to the first fan rotating speed adjusting quantity.
4. A method of controlling an air conditioner fan motor as claimed in claim 1, further comprising:
determining that the time for adjusting the rotating speed of the fan motor according to the environment temperature reaches a second preset time period;
acquiring the actual rotating speed of the fan motor at a preset period;
obtaining a second fan rotating speed regulating quantity according to the actual rotating speed and the target rotating speed;
and adjusting the actual rotating speed of the fan motor according to the second fan rotating speed adjusting quantity until the actual rotating speed reaches the target rotating speed.
5. A method of controlling a fan motor of an air conditioner according to claim 4, wherein obtaining a second fan speed adjustment amount based on the actual speed and a target speed comprises:
performing PID adjustment according to the actual rotating speed and the target rotating speed to obtain an initial fan rotating speed adjustment amount;
obtaining a load coefficient according to a preset rotating speed interval where the actual rotating speed of the fan motor is located;
and calculating a quotient value of the initial fan rotating speed regulating quantity and the load coefficient to serve as the second fan rotating speed regulating quantity.
6. A method of controlling an air conditioner fan motor according to any one of claims 1 to 5, further comprising:
detecting that the fan motor is abnormally stopped, and controlling the fan motor to restart;
recording the accumulated times of abnormal shutdown of the fan motor;
and determining that the accumulated times reach a preset time threshold value in a third time period, and controlling the whole air conditioner to stop.
7. A method of controlling an air conditioner fan motor as set forth in claim 6, further comprising:
and if the accumulated times in the third time length are determined to be smaller than the preset times threshold, subtracting 1 from the accumulated times.
8. An air conditioner, comprising:
an indoor fan motor and an outdoor fan motor;
a processor and a memory communicatively coupled to the processor;
wherein the memory stores therein a computer program executable by the processor, the processor implementing the method of controlling an air conditioner fan motor of any one of claims 1-7 when executing the computer program to control at least one of the indoor fan motor and the outdoor fan motor.
9. A non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method of controlling an air conditioner fan motor of any one of claims 1-7.
CN202110768114.0A 2021-07-07 2021-07-07 Method of controlling fan motor of air conditioner, air conditioner and computer-readable storage medium Active CN113587381B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104121658A (en) * 2013-04-28 2014-10-29 珠海格力电器股份有限公司 Control method and control device for fan of air conditioner outdoor unit and air conditioner
CN105571078A (en) * 2016-01-26 2016-05-11 芜湖美智空调设备有限公司 Fan rotating speed control method and device of outdoor unit of air conditioner
CN106440255A (en) * 2016-11-11 2017-02-22 广东美的暖通设备有限公司 Fan control method, fan control system, fan and air conditioner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104121658A (en) * 2013-04-28 2014-10-29 珠海格力电器股份有限公司 Control method and control device for fan of air conditioner outdoor unit and air conditioner
CN105571078A (en) * 2016-01-26 2016-05-11 芜湖美智空调设备有限公司 Fan rotating speed control method and device of outdoor unit of air conditioner
CN106440255A (en) * 2016-11-11 2017-02-22 广东美的暖通设备有限公司 Fan control method, fan control system, fan and air conditioner

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