CN112611095B - Control method and control device for indoor direct current fan in variable frequency air conditioner - Google Patents

Control method and control device for indoor direct current fan in variable frequency air conditioner Download PDF

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Publication number
CN112611095B
CN112611095B CN202011520434.6A CN202011520434A CN112611095B CN 112611095 B CN112611095 B CN 112611095B CN 202011520434 A CN202011520434 A CN 202011520434A CN 112611095 B CN112611095 B CN 112611095B
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direct current
indoor
rotating speed
fan
air conditioner
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CN112611095A (en
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于光
梁国强
霍军亚
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GD Midea Air Conditioning Equipment Co Ltd
Foshan Shunde Midea Electric Science and Technology Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
Foshan Shunde Midea Electric Science and Technology 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
    • F24F11/70—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
    • 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
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/247—Active noise-suppression
    • 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

Abstract

The application discloses control method and control device of indoor direct current fan in variable frequency air conditioner, including: when the indoor direct current fan runs, determining a speed regulation parameter according to a given rotating speed and the on-off state information of the indoor air swinging function; and when the indoor direct current fan is controlled according to the speed regulation parameter, determining the on-off state information of a compressor and the fluctuation information of direct current bus voltage in the variable frequency air conditioner, and performing compensation control on the rotating speed of the indoor direct current fan according to the on-off state information of the compressor and the fluctuation information of the direct current bus voltage. According to the control method of the indoor direct current fan in the variable frequency air conditioner, in the process of controlling the rotating speed of the direct current fan, practical adjustment and compensation can be conducted on the actual rotating speed of the direct current fan, so that the rotating speed of the direct current fan is in a stable state, sound with the rotating speed being not large or small is avoided, and user experience is improved.

Description

Control method and control device for indoor direct current fan in variable frequency air conditioner
Technical Field
The application relates to the technical field of household appliance manufacturing, in particular to a control method of an indoor direct current fan in a variable frequency air conditioner, a control device suitable for the control method and an air conditioner controller.
Background
In the related art, the indoor direct current fan of the mobile air conditioner is controlled, and the rotating speed is controlled only according to the feedback of the indoor direct current fan, specifically, when the direct current bus voltage is changed sharply due to the opening or closing of a compressor; and when opening and sway, the air output change greatly, and the load fluctuation is very big, and control mode among the prior art can't realize in time adjusting, leads to direct current fan's rotational speed control lag, and it is relatively poor to use the reliability, has the space of improvement.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. Therefore, an object of the present application is to provide a method for controlling an indoor dc fan in an inverter air conditioner, which can ensure the timeliness of controlling the dc fan and avoid the generation of sound with a suddenly large or small rotation speed.
The control method of the indoor direct current fan in the variable frequency air conditioner comprises the following steps: when the indoor direct current fan runs, determining a speed regulation parameter according to a given rotating speed and the on-off state information of the indoor air swinging function; and when the indoor direct current fan is controlled according to the speed regulation parameter, determining the on-off state information of a compressor and the fluctuation information of direct current bus voltage in the variable frequency air conditioner, and performing compensation control on the rotating speed of the indoor direct current fan according to the on-off state information of the compressor and the fluctuation information of the direct current bus voltage.
According to the control method of the indoor direct current fan in the variable frequency air conditioner, in the process of controlling the rotating speed of the direct current fan, the influence conditions of the given rotating speed, the switch state of the indoor air swinging function, the switch state information of the compressor and the fluctuation information of the direct current bus voltage can be comprehensively considered, actual adjustment and compensation are conducted on the actual rotating speed of the direct current fan, the rotating speed of the direct current fan is enabled to be in a stable state, the generation of sound with the rotating speed being suddenly reduced is avoided, and user experience is improved.
According to some embodiments of the present application, a method for controlling an indoor dc fan in an inverter air conditioner, which performs compensation control on a rotation speed of the indoor dc fan according to on-off state information of a compressor and fluctuation information of a dc bus voltage, includes: when the compressor is determined to be turned off from the starting state according to the on-off state information of the compressor, judging whether the rising amplitude of the direct current bus voltage is larger than or equal to a first voltage threshold value or not according to the fluctuation information of the direct current bus voltage; if so, compensating and controlling the rotating speed of the indoor direct current fan by reducing the duty ratio of a switch tube control signal in the inverter.
According to some embodiments of the present application, a method for controlling an indoor dc fan in an inverter air conditioner, which performs compensation control on a rotation speed of the indoor dc fan according to on-off state information of a compressor and fluctuation information of a dc bus voltage, includes: when the compressor is determined to be started from the closed state according to the on-off state information of the compressor, judging whether the reduction amplitude of the direct current bus voltage is larger than or equal to a second voltage threshold value or not according to the fluctuation information of the direct current bus voltage; if so, the duty ratio of a control signal of a switching tube in the inverter is increased to perform compensation control on the rotating speed of the indoor direct current fan.
According to the control method of the indoor direct current fan in the variable frequency air conditioner, the speed regulation parameter is determined according to the given rotating speed and the switch state information of the indoor air swinging function, and the method comprises the following steps: judging whether the given rotating speed is greater than or equal to a first preset rotating speed threshold value or not; when the given rotating speed is greater than or equal to a first preset rotating speed threshold value, judging whether the indoor air swinging function of the variable frequency air conditioner is started or not according to the on-off state information of the indoor air swinging function; if yes, selecting a first threshold speed regulation parameter; and if not, selecting a second threshold speed regulating parameter.
According to some embodiments of the present application, a method for controlling an indoor direct current fan in a variable frequency air conditioner determines a speed regulation parameter according to a given rotation speed and on-off state information of an indoor swing function, and further includes: when the given rotating speed is smaller than the first preset rotating speed threshold value, judging whether the indoor air swing function of the variable frequency air conditioner is started or not according to the on-off state information of the indoor air swing function; if yes, selecting a third threshold speed regulation parameter; and if not, selecting a fourth threshold speed regulating parameter.
It is still another object of the present application to provide a computer readable storage medium, on which a control program of an indoor dc fan in an inverter air conditioner is stored, wherein the control program of the indoor dc fan in the inverter air conditioner, when executed by a processor, implements the control method of the indoor dc fan in the inverter air conditioner according to any of the above embodiments.
Another objective of the present application is to provide an air conditioner controller, which includes a memory, a processor, and a control program of an indoor dc fan in an inverter air conditioner, stored in the memory and running on the processor, wherein when the processor executes the control program of the indoor dc fan in the inverter air conditioner, the method for controlling the indoor dc fan in the inverter air conditioner according to any of the above embodiments is implemented.
Another objective of the present application is to provide a control device for an indoor dc fan in an inverter air conditioner.
According to the control device of indoor direct current fan in inverter air conditioner of some embodiments of this application, include: the first determining module is used for determining a speed regulating parameter according to the given rotating speed and the switch state information of the indoor wind swinging function when the indoor direct current fan runs; the control module is used for controlling the indoor direct current fan according to the speed regulation parameter; the second determining module is used for determining the on-off state information of a compressor in the variable frequency air conditioner and the fluctuation information of the direct current bus voltage; and the control module is also used for performing compensation control on the rotating speed of the indoor direct current fan according to the on-off state information of the compressor and the fluctuation information of the direct current bus voltage.
According to some embodiments of the present application, when determining that the compressor is turned on to off according to the switching state information of the compressor, the control module is further configured to determine whether a rising amplitude of the dc bus voltage is greater than or equal to a first voltage threshold according to fluctuation information of the dc bus voltage, and when the rising amplitude of the dc bus voltage is greater than or equal to the first voltage threshold, perform compensation control on the rotation speed of the indoor dc fan by reducing a duty ratio of a switching tube control signal in an inverter; and when the compressor is determined to be started from the closing state according to the on-off state information of the compressor, judging whether the reduction amplitude of the direct current bus voltage is greater than or equal to a second voltage threshold value according to the fluctuation information of the direct current bus voltage, and when the reduction amplitude of the direct current bus voltage is greater than or equal to the second voltage threshold value, performing compensation control on the rotating speed of the indoor direct current fan by improving the duty ratio of a switch tube control signal in the inverter.
According to some embodiments of the present disclosure, in the control device of an indoor dc fan in an inverter air conditioner, the first determining module is further configured to determine whether the given rotation speed is greater than or equal to a first preset rotation speed threshold; when the given rotating speed is greater than or equal to a first preset rotating speed threshold value, judging whether the indoor air swinging function of the variable frequency air conditioner is started or not according to the on-off state information of the indoor air swinging function; if yes, selecting a first threshold speed regulation parameter; and if not, selecting a second threshold speed regulating parameter.
According to the control device of the indoor direct current fan in the variable frequency air conditioner, according to some embodiments of the present application, the first determining module is further configured to determine whether the variable frequency air conditioner starts an indoor swing function according to the on-off state information of the indoor swing function when the given rotation speed is less than the first preset rotation speed threshold; if yes, selecting a third threshold speed regulation parameter; and if not, selecting a fourth threshold speed regulating parameter.
Compared with the prior art, the control device of the indoor direct current fan in the variable frequency air conditioner and the control method have the same advantages, and are not repeated herein.
Additional aspects and advantages of the present application 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 present application.
Drawings
The above and/or additional aspects and advantages of the present application 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 schematic flow chart of a control method of an indoor DC fan in an inverter air conditioner according to an embodiment of the present application;
fig. 2 is a flowchart illustrating a control method of an indoor dc fan in an inverter air conditioner according to an embodiment of the present application (a specific example of step S10);
fig. 3 is a flowchart illustrating a control method of an indoor dc fan in an inverter air conditioner according to an embodiment of the present application (a specific example of step S20);
FIG. 4 is a logic block diagram of a method for controlling an indoor DC fan of an inverter air conditioner according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a control device of an indoor dc fan in an inverter air conditioner according to an embodiment of the present application.
Reference numerals:
the control device (100) is controlled such that,
the device comprises a first determination module 1, a second determination module 2 and a control module 3.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
The method for controlling the indoor direct current fan in the inverter air conditioner according to the embodiment of the present application is described below with reference to fig. 1, and the method is suitable for controlling the direct current fan, wherein in the process of controlling the direct current fan by using the method, the influence of the given rotation speed, the indoor swing function, the on-off state information of the compressor in the inverter air conditioner and the fluctuation information of the direct current bus voltage on the operation of the direct current fan can be comprehensively considered, and the operation state of the direct current fan can be controlled in time, so that the direct current fan can be ensured to be in a stable operation state, the generation of sounds with the rotation speed being suddenly reduced is avoided, and the user experience is improved.
As shown in fig. 1, a method for controlling an indoor dc fan in an inverter air conditioner according to an embodiment of the present application includes:
s10: when the indoor direct current fan operates, the speed regulation parameter is determined according to the given rotating speed and the on-off state information of the indoor air swinging function, namely, in the application, when the rotating speed of the direct current fan is adjusted, the given rotating speed and the on-off state information of the indoor air swinging function and other influencing factors can be effectively combined, so that the rotating speed of the direct current fan can well adapt to the actual rotating requirement.
In specific implementation, after the direct current fan is started to operate, the given rotating speed can be obtained, the given rotating speed can be judged after the actual given rotating speed of the direct current fan is obtained, and when the given rotating speed is in different parameter ranges, the given rotating speed can be used as a reference basis for adjusting the rotating speed of the direct current fan. Further, after a parameter range where the given rotating speed is actually located is definitely obtained, the indoor swing function state can be obtained based on the parameter range, and different speed regulation parameters are selected according to different indoor swing function states, so that the current rotating speed of the direct current fan is adjusted according to the determined speed regulation parameters.
It can be understood that when the given rotating speed is obtained, the actual given rotating speed is greater than or equal to or less than a certain set rotating speed threshold value, and the corresponding speed regulating parameters in the two states of greater than or equal to or less than the two states are different, and meanwhile, the indoor wind swinging function is on or off, and the corresponding speed regulating parameters in the two states of on or off are different.
Therefore, the on-off state of the given rotating speed and the indoor swing function is used as the basis for acquiring the speed regulation parameters, and at least four alternative conditions can be provided, for example, two different speed regulation parameters can be respectively selected corresponding to the state of the indoor swing function when the given rotating speed is higher than a certain rotating speed threshold value, or two different speed regulation parameters can be respectively selected corresponding to the state of the indoor swing function when the given rotating speed is lower than a certain rotating speed threshold value, so that the influence of the actual given rotating speed and the current indoor swing function state of the direct current fan can be comprehensively considered when the speed regulation parameters are acquired, the corresponding speed regulation parameters can be more practically acquired, and the running state of the direct current fan after speed regulation can better meet the actual requirements of users.
S20: when the indoor direct current fan is controlled according to the speed regulation parameter, the on-off state information of the compressor and the fluctuation information of the direct current bus voltage in the variable frequency air conditioner are determined, and the rotating speed of the indoor direct current fan is compensated and controlled according to the on-off state information of the compressor and the fluctuation information of the direct current bus voltage.
That is to say, in the process of adjusting the actual rotating speed of the direct current fan, the actual rotating speed of the direct current fan can be further compensated according to the on-off state information of the compressor and the fluctuation information of the direct current bus voltage, so that the actual requirement of the direct current fan is met.
Therefore, after the on-off state information of the compressor is acquired, the on-off state information of the compressor can be analyzed and judged in advance, and after the on-off state information of the compressor is determined, the fluctuation information of the direct current bus voltage is further acquired based on the determined on-off state information of the compressor, and compensation of different degrees is realized for the on-off state information of different compressors and the fluctuation information of different direct current bus voltages.
It can be understood that, when the on-off state information of the compressor is acquired, the on-off state information of the compressor has the conditions from on to off and from off to on, and the compensation degrees corresponding to the two conditions from on to off and from off to on are different, meanwhile, the fluctuation information of the direct current bus voltage has the condition that the fluctuation is greater than or equal to or less than the set voltage threshold value, and the corresponding compensation degrees are different in the two conditions.
Therefore, by taking the on-off state information of the compressor and the fluctuation information of the DC bus voltage as the basis for acquiring the compensation degree of the rotating speed of the DC fan, at least four alternative situations can be provided, for example, two different compensation degrees can be respectively selected according to the fluctuation information of the DC bus voltage when the compressor is turned from on to off, or when the compressor is turned on from off, the fluctuation information of the corresponding DC bus voltage can respectively select two different compensation degrees, when the speed regulation parameters are obtained, the influence of the on-off state information of the compressor and the fluctuation information of the DC bus voltage can be comprehensively considered, therefore, the corresponding compensation degree is obtained more reasonably and practically, the actual requirements of users can be better met by the running state of the compensated direct current fan, and the direct current fan is ensured to be in a stable running state.
According to the control method of the indoor direct current fan in the variable frequency air conditioner, in the process of controlling the rotating speed of the direct current fan, the influence conditions of the given rotating speed, the switching state of the indoor air swinging function, the switching state information of the compressor and the fluctuation information of the direct current bus voltage can be comprehensively considered, actual adjustment and compensation are conducted on the actual rotating speed of the direct current fan, the rotating speed of the direct current fan is enabled to be in a stable state, the problem that the direct current fan is seriously abnormal is avoided, and user experience is improved.
In some embodiments, as shown in fig. 3 and 4, in step S20, performing compensation control on the rotation speed of the indoor dc fan according to the on-off state information of the compressor and the fluctuation information of the dc bus voltage includes:
s21; when the compressor is determined to be closed from the start according to the on-off state information of the compressor, judging whether the rising amplitude of the direct current bus voltage is larger than or equal to a first voltage threshold value or not according to the fluctuation information of the direct current bus voltage; if so, compensating and controlling the rotating speed of the indoor direct current fan by reducing the duty ratio of a switch tube control signal in the inverter.
That is, after the speed of the dc fan is adjusted, if the compressor is turned from on to off, the fluctuation information of the dc bus voltage may be further determined, wherein the first voltage threshold may be selected to be 50V. In other words, when the rising amplitude of the direct current bus voltage is greater than or equal to 50V, at the moment, the rotating speed of the direct current fan needs to be controlled to be reduced so as to avoid the condition that the operation is unstable due to the fact that the actual rotating speed of the direct current fan is increased too much, therefore, the actual rotating speed of the direct current fan can be effectively reduced by reducing the duty ratio of a control signal of a switch tube in an inverter, the effect that the rotating speed is controlled stably when the bus voltage fluctuates severely is achieved, noise is not generated by the direct current fan due to fluctuation of the rotating speed, and the noise performance of the direct current fan is improved. In a specific implementation, the duty cycle of the switching tube control signal in the inverter may be reduced by 10%.
When the compressor is started to be closed, if the rising amplitude of the DC bus voltage is smaller than 50V, the DC fan rotates at the current rotating speed without the problems of overlarge fluctuation and noise generation, the rotating speed of the DC fan does not need to be compensated, and the DC fan can stably and effectively operate.
In some embodiments, in step S20, performing compensation control on the rotation speed of the indoor dc fan according to the information on the on-off state of the compressor and the fluctuation information of the dc bus voltage includes:
s22; determining whether the reduction amplitude of the direct current bus voltage is greater than or equal to a second voltage threshold value or not according to the fluctuation information of the direct current bus voltage when the compressor is started from the closed state according to the on-off state information of the compressor; if so, the duty ratio of a control signal of a switching tube in the inverter is increased to perform compensation control on the rotating speed of the indoor direct current fan.
That is, after the speed of the dc fan is adjusted, if the fluctuation information of the dc bus voltage is obtained when the compressor is turned on from off, the second voltage threshold may be different from or the same as the first voltage threshold, for example, the second voltage threshold may be selected to be the same as or 50V, in other words, when the reduction amplitude of the dc bus voltage is greater than or equal to 50V, the rotation speed of the dc fan needs to be controlled to increase, so as to avoid the unstable operation caused by the excessive reduction amplitude of the actual rotation speed of the dc fan, and therefore, the actual rotation speed of the dc fan can be effectively increased by increasing the duty ratio of the switching control signal in the inverter, so as to achieve the effect of stable control of the rotation speed when the bus voltage fluctuates severely, so that the dc fan does not generate noise due to the excessive fluctuation of the rotation speed, the noise performance of the direct current fan is improved. In a specific implementation, the duty cycle of the switching tube control signal in the inverter may be increased by 10%.
When the compressor is started from the closed state, if the reduction amplitude of the DC bus voltage is less than 50V, the DC fan rotates at the current rotating speed without the problems of overlarge fluctuation and noise generation, the rotating speed of the DC fan does not need to be compensated, and the DC fan can stably and effectively operate.
In some embodiments, as shown in fig. 2 and 4, in step S10, the determining the speed-adjusting parameter according to the given rotation speed and the switch state information of the indoor swinging function includes:
s11: judging whether the given rotating speed is greater than or equal to a first preset rotating speed threshold value or not; when the given rotating speed is greater than or equal to a first preset rotating speed threshold value, judging whether the indoor air swinging function of the variable frequency air conditioner is started or not according to the on-off state information of the indoor air swinging function; if yes, selecting a first threshold speed regulation parameter; and if not, selecting a second threshold speed regulating parameter.
It can be understood that when the given rotating speed is obtained, the actual given rotating speed is greater than or equal to or less than the first preset rotating speed threshold value, and the corresponding speed regulating parameters in the two states are different, and meanwhile, the indoor air swinging function is on or off, and the corresponding speed regulating parameters in the two states are different.
The first preset rotating speed threshold value can be selected to be 1000RPM, in specific execution, when the given rotating speed is greater than or equal to 1000RPM, the on-off state information of the indoor wind swinging function can be further acquired, if the indoor wind swinging function is in an on state, the first threshold value speed regulating parameter is selected to regulate the current rotating speed of the direct current fan, and if the indoor wind swinging function is in an off state, the second threshold value speed regulating parameter is selected to regulate the current rotating speed of the direct current fan. Therefore, when the given rotating speed is greater than or equal to the first preset rotating speed threshold value and the given rotating speed respectively corresponds to the on-off states of the two indoor wind swinging functions, the first threshold value speed regulating parameter and the second threshold value speed regulating parameter can be respectively selected to regulate the rotating speed of the direct current fan, so that the actual rotating speed value of the direct current fan can be reasonably matched with the running state of the indoor wind swinging function.
In some embodiments, in step S10, determining the speed-adjusting parameter according to the given rotation speed and the switch state information of the indoor wind-swinging function, further includes:
s12: when the given rotating speed is smaller than a first preset rotating speed threshold value, judging whether the indoor air swinging function of the variable frequency air conditioner is started or not according to the on-off state information of the indoor air swinging function; if yes, selecting a third threshold speed regulation parameter; and if not, selecting a fourth threshold speed regulating parameter.
It can be understood that when the given rotating speed is obtained, the actual given rotating speed is greater than or equal to or less than the first preset rotating speed threshold value, and the corresponding speed regulating parameters in the two states are different, and meanwhile, the indoor air swinging function is on or off, and the corresponding speed regulating parameters in the two states are different.
The first preset rotating speed threshold value can be selected to be 1000RPM, in specific execution, when the given rotating speed is less than 1000RPM, the on-off state information of the indoor wind swinging function can be further acquired, if the indoor wind swinging function is in an on state, a third threshold value speed regulating parameter is selected to regulate the current rotating speed of the direct current fan, and if the indoor wind swinging function is in an off state, a fourth threshold value speed regulating parameter is selected to regulate the current rotating speed of the direct current fan. Therefore, when the given rotating speed is smaller than the first preset rotating speed threshold value and respectively corresponds to the on-off states of the two indoor wind swinging functions, the third threshold value speed regulation parameter and the fourth threshold value speed regulation parameter can be respectively selected to adjust the rotating speed of the direct current fan, so that the actual rotating speed value of the direct current fan can be reasonably matched with the running state of the indoor wind swinging function.
The first preset rotating speed threshold, the second threshold speed regulation parameter, the third threshold speed regulation parameter and the fourth threshold speed regulation parameter can be flexibly set according to actual requirements, so that after the rotating speed of the direct current fan is adjusted according to the speed regulation parameters, actual operation requirements can be met, and the direct current fan is ensured to be in a safe and stable operation state.
Therefore, by the control method of the indoor direct current fan in the variable frequency air conditioner, different speed regulation parameters and compensation methods can be adopted according to the conditions of operation of an air conditioner compressor, bus voltage change, opening of a swing function and the like, so that the problems of abnormal sound and an excessive operation range caused by large fluctuation of the rotating speed of the fan are solved, and the direct current fan is ensured to operate safely and stably.
The execution process of the control method for the indoor direct current fan in the inverter air conditioner according to one embodiment of the present application is described with reference to fig. 4:
first, as shown in fig. 4, when a user wants to use the air conditioner, the air conditioner is controlled to be powered on, so that the indoor direct current fan of the air conditioner enters an operating state, at this time, a given rotating speed of the direct current fan can be obtained, and the obtained given rotating speed is judged. When the given rotating speed is determined to be higher than 1000RPM, whether the air conditioner starts a swing function or not is further judged, if the air conditioner is in the state that the swing function is started, a first threshold speed regulating parameter is used for controlling the air conditioner, and if the air conditioner is not in the state that the swing function is started, a second threshold speed regulating parameter is used for controlling the air conditioner; and when the given rotating speed is determined to be not higher than 1000RPM, whether the air conditioner starts the swing function or not is further judged, if the air conditioner is in the state that the swing function is started, the third threshold speed regulating parameter is used for controlling the air conditioner, and if the air conditioner is not in the state that the swing function is started, the fourth threshold speed regulating parameter is used for controlling the air conditioner.
Further, as shown in fig. 4, after the speed regulation parameter is determined, the state of the compressor is further acquired and judged. When the compressor is in a state from a starting state to a closing state, the bus voltage is judged, if the amplitude of the bus voltage exceeds a first voltage threshold value, the bus voltage is reduced by 10% on the basis of the current control duty ratio, detection is finished after adjustment is finished, and if the amplitude of the bus voltage does not exceed the first voltage threshold value, the detection is finished; and when the compressor is obtained from a closed state to an open state, judging the bus voltage, if the reduction amplitude of the bus voltage exceeds a second voltage threshold value, increasing by 10% on the basis of the current control duty ratio, and finishing detection after the adjustment is finished, or finishing the detection if the reduction amplitude of the bus voltage does not exceed the second voltage threshold value.
After the speed regulation parameter is determined, if the condition that the compressor is not in the state from the opening state to the closing state or in the state from the closing state to the opening state is obtained, the compressor is in the stable state, and the detection process is finished.
In order to implement the above embodiments, the present invention provides a computer-readable storage medium, on which a control program of an indoor dc fan in an inverter air conditioner is stored, and when the control program is executed by a processor, the control method of the indoor dc fan in the inverter air conditioner in the above embodiments can be implemented.
According to the computer readable storage medium of the embodiment of the invention, when the control program of the indoor direct current fan in the variable frequency air conditioner is executed by the processor, the processor can adjust and compensate the running rotating speed of the direct current fan according to the given rotating speed, the switch state of the indoor air swinging function, the switch state information of the compressor and the fluctuation information of the direct current bus voltage in the environment state of the actual direct current fan, so that the rotating speed of the direct current fan is in a stable state, the generation of the sound of the small and large rotating speed is avoided, and the user experience is improved.
In order to implement the above embodiments, the present invention further provides an air conditioner controller, including: the control method of the indoor direct current fan in the inverter air conditioner is realized when the processor executes the control program.
According to the air conditioner controller provided by the embodiment of the invention, the processor executes the control program of the indoor direct current fan in the variable frequency air conditioner, which is stored in the memory, so that the processor can adjust and compensate the running rotating speed of the direct current fan according to the given rotating speed in the actual environment state of the direct current fan, the switch state of the indoor air swinging function, the switch state information of the compressor and the fluctuation information of the direct current bus voltage, thereby enabling the rotating speed of the direct current fan to be in a stable state, avoiding the generation of sound with the rotating speed being suddenly reduced, and improving the user experience.
The air conditioner controller comprises at least one processor, at least one communication interface, at least one memory and at least one communication bus; in the embodiment of the invention, the number of the processor, the communication interface, the memory and the communication bus is at least one, and the processor, the communication interface and the memory are communicated with each other through the communication bus.
The Memory may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The memory is used for storing a control program, and the processor executes the program after receiving the execution instruction, so as to implement the control method of the indoor direct current fan in the inverter air conditioner described in the above embodiment.
The processor may be an integrated circuit chip having signal processing capabilities. The processor may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The control method of the indoor direct current fan in the inverter air conditioner disclosed in the embodiment of the invention can be realized or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The present application further proposes a control device 100 for an indoor dc fan in an inverter air conditioner, as shown in fig. 5, the control device 100 includes: the device comprises a first determination module 1, a control module 3 and a second determination module 2.
The control method comprises the following steps that a first determining module 1 is used for determining a speed regulating parameter according to a given rotating speed and on-off state information of an indoor wind swinging function when an indoor direct current fan runs, a control module 3 is used for controlling the indoor direct current fan according to the speed regulating parameter, a second determining module 2 is used for determining on-off state information of a compressor and fluctuation information of direct current bus voltage in the variable frequency air conditioner, and the control module 3 is further used for performing compensation control on the rotating speed of the indoor direct current fan according to the on-off state information of the compressor and the fluctuation information of the direct current bus voltage.
Therefore, with the control device 100, when the rotation speed of the dc fan is adjusted, the given rotation speed and the influence factors such as the on-off state information of the indoor swing function can be effectively combined, so that the rotation speed of the dc fan can be well adapted to the actual rotation requirement.
Therefore, the on-off state of the given rotating speed and the indoor swinging function is used as the basis for acquiring the speed regulation parameters, and at least four alternative conditions can be provided, for example, two different speed regulation parameters can be respectively selected corresponding to the state of the indoor swinging function when the given rotating speed is higher than a certain rotating speed threshold value, or two different speed regulation parameters can be respectively selected corresponding to the state of the indoor swinging function when the given rotating speed is lower than a certain rotating speed threshold value, so that the influence of the actual given rotating speed and the current indoor swinging function state of the direct current fan can be comprehensively considered when the speed regulation parameters are acquired, and the corresponding speed regulation parameters can be more practically acquired, so that the running state of the direct current fan after speed regulation can better meet the actual requirements of users.
Therefore, at the same time, by using the control device 100, the on-off state information of the compressor and the fluctuation information of the DC bus voltage can be used as the basis for obtaining the compensation degree of the DC fan rotating speed, at least four alternative situations can be provided, for example, two different compensation degrees can be respectively selected according to the fluctuation information of the DC bus voltage when the compressor is turned from on to off, or when the compressor is turned on from off, the fluctuation information of the corresponding DC bus voltage can respectively select two different compensation degrees, when the speed regulation parameters are obtained, the influence of the on-off state information of the compressor and the fluctuation information of the DC bus voltage can be comprehensively considered, therefore, the corresponding compensation degree is obtained more reasonably and practically, the actual requirements of users can be better met by the running state of the compensated direct current fan, and the direct current fan is ensured to be in a stable running state.
In some embodiments, the control module 3 is further configured to determine, when the compressor is turned on to off according to the switching state information of the compressor, whether a rising amplitude of the dc bus voltage is greater than or equal to a first voltage threshold according to fluctuation information of the dc bus voltage, and perform compensation control on the rotation speed of the indoor dc fan by reducing a duty ratio of a switching tube control signal in the inverter when the rising amplitude of the dc bus voltage is greater than or equal to the first voltage threshold;
that is to say, after the control module 3 controls the dc fan to complete speed regulation, if it is obtained that the compressor is turned on to off, fluctuation information of the dc bus voltage may be further determined, where the first voltage threshold may be selected to be 50V, in other words, when the rising amplitude of the dc bus voltage is greater than or equal to 50V, at this time, the rotation speed of the dc fan needs to be controlled to be reduced, so as to avoid the situation that the operation is unstable due to too large increase of the actual rotation speed of the dc fan, and therefore, the actual rotation speed of the dc fan may be effectively reduced by reducing the duty ratio of the switching tube control signal in the inverter, so as to achieve the effect that the rotation speed control is stable when the bus voltage fluctuates severely, so that the dc fan does not generate noise due to fluctuation of the rotation speed, and the noise performance of the dc fan is improved. In a specific implementation, the duty cycle of the switching tube control signal in the inverter may be reduced by 10%.
Or when the compressor is determined to be started from the closed state according to the switching state information of the compressor, whether the reduction amplitude of the direct current bus voltage is larger than or equal to a second voltage threshold value or not is judged according to the fluctuation information of the direct current bus voltage, and when the reduction amplitude of the direct current bus voltage is larger than or equal to the second voltage threshold value, the duty ratio of a switching tube control signal in the inverter is increased, so that the compensation control is carried out on the rotating speed of the indoor direct current fan.
That is, after the control module 3 controls the dc fan to complete speed regulation, if the fluctuation information of the dc bus voltage is obtained when the compressor is turned on from off, the second voltage threshold may be different from the first voltage threshold, or may be the same as the first voltage threshold, for example, the second voltage threshold may be the same as or 50V as the first voltage threshold, in other words, when the reduction amplitude of the dc bus voltage is greater than or equal to 50V, at this time, the rotation speed of the dc fan needs to be controlled to increase, so as to avoid the unstable operation condition caused by the excessive reduction amplitude of the actual rotation speed of the dc fan, and therefore, the actual rotation speed of the dc fan can be effectively increased by increasing the duty ratio of the switch tube control signal in the inverter, so as to achieve the effect of stable rotation speed control when the bus voltage fluctuates severely, so that the dc fan does not generate noise due to the excessive rotation speed fluctuation, the noise performance of the direct current fan is improved. In a specific implementation, the duty cycle of the switching tube control signal in the inverter may be increased by 10%.
Therefore, after the state of the dc fan is compensated by the control device 100, the rotation of the dc fan does not have the problems of excessive fluctuation and noise generation, and the rotation speed of the dc fan does not need to be compensated, and the dc fan can stably and effectively operate.
In some embodiments, the first determination module 1 is further configured to determine whether the given rotation speed is greater than or equal to a first preset rotation speed threshold; when the given rotating speed is greater than or equal to a first preset rotating speed threshold value, judging whether the indoor air swinging function of the variable frequency air conditioner is started or not according to the on-off state information of the indoor air swinging function; if yes, selecting a first threshold speed regulation parameter; and if not, selecting a second threshold speed regulating parameter.
In specific execution, the first preset rotation speed threshold may be selected to be 1000RPM, in specific execution, when the first determining module 1 determines that the given rotation speed is greater than or equal to 1000RPM, the on-off state information of the indoor swing function may be further obtained, if the indoor swing function is in an on state, the first threshold speed regulation parameter is selected to adjust the current rotation speed of the direct current fan, and if the indoor swing function is in an off state, the second threshold speed regulation parameter is selected to adjust the current rotation speed of the direct current fan. Therefore, when the given rotating speed is greater than or equal to the first preset rotating speed threshold value and the given rotating speed respectively corresponds to the on-off states of the two indoor wind swinging functions, the first threshold value speed regulating parameter and the second threshold value speed regulating parameter can be respectively selected to regulate the rotating speed of the direct current fan, so that the actual rotating speed value of the direct current fan can be reasonably matched with the running state of the indoor wind swinging function.
In some embodiments, the first determining module 1 is further configured to, when the given rotation speed is less than a first preset rotation speed threshold, determine whether the variable frequency air conditioner starts the indoor swing function according to the on-off state information of the indoor swing function; if yes, selecting a third threshold speed regulation parameter; and if not, selecting a fourth threshold speed regulating parameter.
In specific execution, the first determining module 1 determines that the given rotating speed of the direct current fan is less than 1000RPM, can further obtain the on-off state information of the indoor swing function, selects a third threshold speed regulating parameter to adjust the current rotating speed of the direct current fan if the indoor swing function is in an on state, and selects a fourth threshold speed regulating parameter to adjust the current rotating speed of the direct current fan if the indoor swing function is in an off state. Therefore, when the given rotating speed is smaller than the first preset rotating speed threshold value and respectively corresponds to the on-off states of the two indoor wind swinging functions, the third threshold value speed regulation parameter and the fourth threshold value speed regulation parameter can be respectively selected to adjust the rotating speed of the direct current fan, so that the actual rotating speed value of the direct current fan can be reasonably matched with the running state of the indoor wind swinging function.
Therefore, through the control device 100 of the indoor direct current fan in the variable frequency air conditioner in the embodiment of the application, different speed regulation parameters and compensation methods can be adopted according to the conditions of the operation of an air conditioner compressor, the change of a bus voltage, whether a swing function is started or not and the like, so that the problems of abnormal sound and an over-operation range caused by large fluctuation of the rotating speed of the fan are solved, and the safe and stable operation of the direct current fan is ensured.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means 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 application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. A control method of an indoor direct current fan in a variable frequency air conditioner is characterized by comprising the following steps:
when the indoor direct current fan runs, determining a speed regulation parameter according to a given rotating speed and the on-off state information of the indoor air swinging function;
when the indoor direct current fan is controlled according to the speed regulation parameter, determining the on-off state information of a compressor and the fluctuation information of direct current bus voltage in the variable frequency air conditioner, and performing compensation control on the rotating speed of the indoor direct current fan according to the on-off state information of the compressor and the fluctuation information of the direct current bus voltage;
according to the on-off state information of the compressor and the fluctuation information of the DC bus voltage, the compensation control of the rotating speed of the indoor DC fan comprises the following steps:
when the compressor is determined to be turned off from the starting state according to the on-off state information of the compressor, judging whether the rising amplitude of the direct current bus voltage is larger than or equal to a first voltage threshold value or not according to the fluctuation information of the direct current bus voltage;
if so, compensating and controlling the rotating speed of the indoor direct current fan by reducing the duty ratio of a switch tube control signal in the inverter.
2. The method for controlling an indoor dc fan of an inverter air conditioner according to claim 1, wherein the compensation control of the rotational speed of the indoor dc fan based on the information on the on/off state of the compressor and the fluctuation information of the dc bus voltage comprises:
when the compressor is determined to be started from the closed state according to the on-off state information of the compressor, judging whether the reduction amplitude of the direct current bus voltage is larger than or equal to a second voltage threshold value or not according to the fluctuation information of the direct current bus voltage;
if so, the duty ratio of a control signal of a switching tube in the inverter is increased to perform compensation control on the rotating speed of the indoor direct current fan.
3. The method for controlling an indoor dc fan of an inverter air conditioner according to any one of claims 1 to 2, wherein determining the speed-adjusting parameter according to the given rotation speed and the on-off state information of the indoor swing function comprises:
judging whether the given rotating speed is greater than or equal to a first preset rotating speed threshold value or not;
when the given rotating speed is greater than or equal to a first preset rotating speed threshold value, judging whether the indoor air swinging function of the variable frequency air conditioner is started or not according to the on-off state information of the indoor air swinging function;
if yes, selecting a first threshold speed regulation parameter;
and if not, selecting a second threshold speed regulating parameter.
4. The method of claim 3, wherein the speed-adjusting parameter is determined according to the given rotation speed and the switch status information of the indoor swing function, further comprising:
when the given rotating speed is smaller than the first preset rotating speed threshold value, judging whether the indoor air swing function of the variable frequency air conditioner is started or not according to the on-off state information of the indoor air swing function;
if yes, selecting a third threshold speed regulation parameter;
and if not, selecting a fourth threshold speed regulating parameter.
5. A computer-readable storage medium, on which a control program of an indoor direct current fan in an inverter air conditioner is stored, the control program of the indoor direct current fan in the inverter air conditioner, when executed by a processor, implementing the control method of the indoor direct current fan in the inverter air conditioner according to any one of claims 1 to 4.
6. An air conditioner controller, characterized by comprising a memory, a processor and a control program of an indoor direct current fan in an inverter air conditioner, wherein the control program is stored in the memory and can run on the processor, and when the processor executes the control program of the indoor direct current fan in the inverter air conditioner, the control method of the indoor direct current fan in the inverter air conditioner according to any one of claims 1 to 4 is realized.
7. A control device (100) of an indoor direct current fan in a variable frequency air conditioner, comprising:
the first determining module (1) is used for determining a speed regulating parameter according to a given rotating speed and the on-off state information of an indoor wind swinging function when the indoor direct current fan runs;
the control module (3) is used for controlling the indoor direct current fan according to the speed regulation parameter;
the second determining module (2) is used for determining the on-off state information of a compressor in the variable frequency air conditioner and the fluctuation information of the direct current bus voltage;
and the control module (3) is also used for performing compensation control on the rotating speed of the indoor direct current fan according to the on-off state information of the compressor and the fluctuation information of the direct current bus voltage.
8. The control device (100) for an indoor DC fan in an inverter air conditioner according to claim 7, wherein the control module (3) is further configured to,
when the compressor is determined to be switched from on to off according to the switching state information of the compressor, whether the rising amplitude of the direct current bus voltage is larger than or equal to a first voltage threshold value or not is judged according to the fluctuation information of the direct current bus voltage, and when the rising amplitude of the direct current bus voltage is larger than or equal to the first voltage threshold value, the duty ratio of a switching tube control signal in an inverter is reduced, so that the compensation control is carried out on the rotating speed of the indoor direct current fan;
and when the compressor is determined to be started from the closing state according to the on-off state information of the compressor, judging whether the reduction amplitude of the direct current bus voltage is greater than or equal to a second voltage threshold value according to the fluctuation information of the direct current bus voltage, and when the reduction amplitude of the direct current bus voltage is greater than or equal to the second voltage threshold value, performing compensation control on the rotating speed of the indoor direct current fan by improving the duty ratio of a switch tube control signal in the inverter.
9. The control device (100) for an indoor DC fan in an inverter air conditioner according to claim 7 or 8, wherein the first determining module (1) is further used for,
judging whether the given rotating speed is greater than or equal to a first preset rotating speed threshold value or not;
when the given rotating speed is greater than or equal to a first preset rotating speed threshold value, judging whether the indoor air swinging function of the variable frequency air conditioner is started or not according to the on-off state information of the indoor air swinging function;
if yes, selecting a first threshold speed regulation parameter;
and if not, selecting a second threshold speed regulating parameter.
10. The control device (100) for an indoor DC fan in an inverter air conditioner according to claim 9, wherein the first determining module (1) is further configured to,
when the given rotating speed is smaller than the first preset rotating speed threshold value, judging whether the indoor air swing function of the variable frequency air conditioner is started or not according to the on-off state information of the indoor air swing function;
if yes, selecting a third threshold speed regulation parameter;
and if not, selecting a fourth threshold speed regulating parameter.
CN202011520434.6A 2020-12-21 2020-12-21 Control method and control device for indoor direct current fan in variable frequency air conditioner Active CN112611095B (en)

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