CN111457540B - Outdoor fan control method and device and air conditioner - Google Patents

Outdoor fan control method and device and air conditioner Download PDF

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Publication number
CN111457540B
CN111457540B CN202010302575.4A CN202010302575A CN111457540B CN 111457540 B CN111457540 B CN 111457540B CN 202010302575 A CN202010302575 A CN 202010302575A CN 111457540 B CN111457540 B CN 111457540B
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China
Prior art keywords
outdoor fan
temperature
current
air conditioner
shutdown
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CN202010302575.4A
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CN111457540A (en
Inventor
赵永红
应必业
韩劼成
陈伟
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Priority to CN202010302575.4A priority Critical patent/CN111457540B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/87Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/88Electrical aspects, e.g. circuits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/20Heat-exchange fluid temperature

Abstract

The invention provides an outdoor fan control method and device and an air conditioner. The outdoor fan control method is used for a refrigeration mode of an air conditioner, and comprises the following steps: acquiring the state of an outdoor fan; and when the outdoor fan is in a shutdown state, acquiring the current of the air conditioner compressor before the shutdown of the outdoor fan, and controlling the starting and stopping of the outdoor fan according to the current and the current before the shutdown. After the outdoor fan is shut down, the outdoor fan is started according to the current of the compressor after the outdoor fan is shut down, the control speed is higher, and the pressure of an air conditioning system is prevented from exceeding the standard.

Description

Outdoor fan control method and device and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to an outdoor fan control method and device and an air conditioner.
Background
The conventional heat pump air conditioner can realize the functions of refrigeration in summer and heating in winter, but in some low-temperature scenes, the air conditioner can be required to realize the refrigeration function, such as hot pot shops, base stations and the like, and the air conditioner is required to refrigerate and cool due to the fact that the indoor heat source has large heat productivity and the indoor temperature is high. However, the outdoor temperature in a low-temperature scene is low, so that the condensing pressure is too low during the refrigeration operation, the pressure difference at two ends of the capillary tube is too small, the flow of the refrigerant is seriously insufficient, and the refrigeration effect of the air conditioner is poor. And because the condensation pressure is low, the evaporation pressure is reduced therewith, even lower than 0 ℃, the indoor evaporator is frozen, the thickness of the ice layer reaches a certain degree, the fan blade can be broken, and the normal use of the air conditioner is influenced.
In the related art, in order to ensure normal refrigeration at low outdoor temperature, a pressure sensor or a temperature sensor in the middle of an outdoor condenser is usually added to a part of low-temperature refrigeration air conditioner, and the condensing pressure is in a proper level by controlling the rotating speed of an external fan, so that the reliability of low-temperature refrigeration is ensured, but the cost is increased. Although the cost of the sensor is not increased, the partial low-temperature refrigeration air conditioner only controls the outer fan through the existing sensor, and because the control scheme is unreasonable, the outer fan is easily untimely opened, the pressure of the air conditioning system exceeds the limit, and the reliability problem exists.
Disclosure of Invention
The invention mainly aims to provide an outdoor fan control method, an outdoor fan control device and an air conditioner.
One aspect of the present invention provides an outdoor fan control method for a cooling mode of an air conditioner, the method including: acquiring the state of the outdoor fan; when the state of the outdoor fan is a shutdown state, acquiring the current of an air conditioner compressor, acquiring the current of the air conditioner compressor before the shutdown of the outdoor fan, and controlling the starting and stopping of the outdoor fan according to the current and the current before the shutdown.
Therefore, after the outdoor fan is stopped, the outdoor fan is started according to the current of the compressor after the outdoor fan is stopped, the current obtaining speed is high, the control speed is higher, and the pressure of the air-conditioning system is prevented from exceeding the standard.
Optionally, the controlling, according to the current and the current before shutdown, the starting and stopping of the outdoor fan includes: when the current is larger than the product of the current before shutdown and a preset proportionality coefficient, starting the outdoor fan; and when the current is not greater than the product of the current before shutdown and a preset proportionality coefficient, controlling the state of the outdoor fan to be unchanged.
Optionally, the preset scaling factor ranges from 1.5 to 3.
Therefore, for example, the preset proportionality coefficient can be determined according to multiple tests, accurate control is realized, the low-temperature refrigeration effect is guaranteed, and frequent starting of the outdoor fan after stopping is avoided.
Optionally, the controlling the starting and stopping of the outdoor fan includes: starting the outdoor fan to enable the outdoor fan to operate at the lowest gear of rotation speed; or controlling the state of the outdoor fan to be a shutdown state.
Optionally, when the state of the outdoor fan is a shutdown state, the method further includes: acquiring a first temperature of an outer disc of the air conditioner, and controlling the starting and stopping of the outdoor fan according to the first temperature and a preset exit temperature of the outer disc; and/or obtaining the duration of the shutdown state, and controlling the starting and stopping of the outdoor fan according to the duration of the shutdown state and the preset longest shutdown time.
Therefore, after the outdoor fan is stopped, whether the outdoor fan is started or not is judged according to the current of the compressor after the outdoor fan is stopped, the temperature of an outer disc of the air conditioner and the stop duration time, and the control reliability and the refrigeration effect of the air conditioner are improved.
Optionally, the method further comprises: when the state of the outdoor fan is a refrigeration running state, acquiring a second temperature of an outer disc of the air conditioner; and controlling the rotating speed of the outdoor fan according to the second temperature of the outer disc of the air conditioner and the preset temperature of the outer disc.
Therefore, when the outdoor fan is in a refrigeration running state, the rotating speed of the outdoor fan is adjusted according to the temperature of the outer disc of the air conditioner, and the refrigeration effect of the air conditioner in the refrigeration running state is improved.
Optionally, the obtaining the second temperature of the air conditioner outer disc includes: and acquiring a second temperature of the outer disc of the air conditioner at set intervals.
Optionally, the controlling the rotation speed of the outdoor fan according to the second temperature of the air conditioner outer disc and the preset outer disc temperature includes: when the difference value between the second temperature and the preset outer disc temperature is within a preset range, controlling the rotating speed of the outdoor fan to be unchanged; when the difference value between the second temperature and the preset outer disc temperature is higher than the preset range, increasing the rotating speed of the outdoor fan; and when the difference value between the second temperature and the preset outer disc temperature is lower than the preset range, reducing the rotating speed of the outdoor fan.
Therefore, the rotating speed of the outer fan of the air conditioner is controlled by regularly acquiring the temperature of the outer disc and comparing the temperature with the preset value, so that the control of the outer fan in a low-temperature refrigeration scene is conveniently and economically realized.
Another aspect of the present invention provides an outdoor unit controller for a cooling mode of an air conditioner, the outdoor unit controller including: the acquisition module is used for acquiring the state of the outdoor fan; and the control module is used for acquiring the current of the air conditioner compressor when the outdoor fan is in a shutdown state, acquiring the current of the air conditioner compressor before the outdoor fan is shut down, and controlling the starting and stopping of the outdoor fan according to the current and the current before the outdoor fan is shut down.
The advantages of the outdoor fan control device are the same as those of the outdoor fan control method, and the description is omitted here.
Another aspect of the present invention provides an air conditioner, comprising: a memory; a processor, said memory storing a program that when executed by said processor implements an outdoor fan control method as described above.
The air conditioner has the same advantages as the outdoor fan control method, and the description is omitted here.
Drawings
Fig. 1 is a flow chart schematically illustrating an outdoor fan control method according to an embodiment of the present invention;
fig. 2 is a flowchart schematically illustrating an outdoor fan control method according to another embodiment of the present invention;
fig. 3 is a block diagram schematically illustrating an outdoor fan control apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 schematically shows a flowchart of an outdoor fan control method according to an embodiment of the present invention. As shown in fig. 1, the outdoor fan control method includes operations S110 to S120.
In operation S110, the state of the outdoor fan is acquired.
The outdoor fan control method is used for the refrigeration mode of the air conditioner. When the air conditioner is in a cooling mode, the state of the outdoor fan is obtained through the rotating speed of the outdoor fan, for example, when the rotating speed of the outdoor fan is 0, the outdoor fan is in a stop state, and when the rotating speed of the outdoor fan is not 0, the outdoor fan is in a cooling running state.
And operation S120, when the outdoor fan is in a shutdown state, acquiring the current of the air conditioner compressor before the outdoor fan is shut down, and controlling the starting and stopping of the outdoor fan according to the current and the current before the outdoor fan is shut down.
In this embodiment, for example, when the stop instruction is sent to change the outdoor fan from the cooling operation state to the stop state, before the outdoor fan is stopped, the current of the compressor may be obtained by a compressor current sensor in the air conditioner, that is, the current before the stop of the air conditioner compressor before the outdoor fan is stopped is obtained. After the outdoor fan enters a shutdown state, the current of the compressor can be obtained through the compressor current sensor, and whether the outdoor fan is started or not is judged according to the relation between the current and the current before shutdown.
In the embodiment, after the outdoor fan is stopped, whether the outdoor fan is started is determined according to the current of the compressor after the outdoor fan is stopped, and the current obtaining speed of the compressor is high, so that the control method of the outdoor fan has higher control speed and can avoid the exceeding of the pressure of an air conditioning system.
Fig. 2 is a flow chart schematically illustrating an outdoor fan control method according to another embodiment of the present invention. Referring to fig. 2, the method for controlling the outdoor fan in the present embodiment will be described in detail. As shown in fig. 2, the outdoor fan control method includes operations S210-S260.
In operation S210, the state of the outdoor fan is acquired.
Specifically, for example, the state of the outdoor fan is obtained by the rotation speed of the outdoor fan, and when the rotation speed of the outdoor fan is 0, the outdoor fan is in a stop state, and when the rotation speed of the outdoor fan is not 0, the outdoor fan is in a cooling operation state.
In operation S220, it is determined whether the state of the outdoor fan is a shutdown state.
When the rotation speed of the outdoor fan is 0, the outdoor fan is in a shutdown state, and operation S230 is performed; when the rotation speed of the outdoor fan is not 0, the outdoor fan is in a cooling operation state, and operation S250 is performed.
In operation S230, the current of the air conditioner compressor, the first temperature of the air conditioner outer disc, and the duration of the shutdown state are obtained.
When the outdoor fan is in a shutdown state, the current of the air conditioner compressor can be detected in real time through the compressor current sensor, so that the current I of the air conditioner compressor can be acquired in real timeCurrent of the current(ii) a The temperature of the air conditioner outer disc is detected in real time through the air conditioner outdoor unit coil pipe temperature sensor, so that the first temperature T of the air conditioner outer disc in a shutdown state is obtained in real timeFirst temperature(ii) a Monitoring the duration t of the outdoor fan in the shutdown state in real timeDuration of outdoor fan shutdownAnd operation S240 is performed.
And operation S240, controlling the starting and stopping of the outdoor fan according to the current, the current before the shutdown, the first temperature, the preset exit temperature of the outer disc, the continuous time of the shutdown state and the preset longest shutdown time.
According to the embodiment of the disclosure, the start and stop of the outdoor fan can be controlled according to the current, the current before the shutdown, the first temperature, the preset exit temperature of the outer disc, the duration time of the shutdown state and the preset longest shutdown time, and the current of the air conditioner compressor, the first temperature of the outer disc of the air conditioner and the duration time of the shutdown state are acquired in real time in operation S230. If the current I of the air conditioner compressorCurrent of the currentGreater than the current I before the shutdown of the air conditioner compressor before the shutdown of the outdoor fanCurrent before shutdownProduct with a predetermined scaling factor A (i.e. I)Current of the current>A×ICurrent before shutdown) Or a first temperature T of an outer plate of an air conditionerFirst temperatureGreater than a predetermined outer disk exit temperature TExit temperature of outer disc(i.e. T)First temperature>TExit temperature of outer disc) Or the time t for which the outdoor fan is in the shutdown stateDuration of outdoor fan shutdownGreater than a predetermined maximum downtime tMaximum down time of outdoor fan(i.e. t)Duration of outdoor fan shutdown>tMaximum down time of outdoor fan) When any one of the three conditions occurs, starting the outdoor fan; when none of the above three conditions occur, i.e. ICurrent of the current≤A×ICurrent before shutdown、TFirst temperature≤TExit temperature of outer discAnd t isDuration of outdoor fan shutdown≤tMaximum down time of outdoor fanAnd when the outdoor fan is in the stopped state, the outdoor fan is controlled to be in the stopped state. The starting of the outdoor fan means controlling the outdoor fan to enter a cooling operation state from a shutdown state and to operate at the lowest gear rotational speed, for example, 1 gear.
According to the embodiment of the disclosure, the start and stop of the outdoor fan may also be controlled only according to the current, the current before the shutdown, the first temperature, and the preset outer disc exit temperature, and the current of the air conditioner compressor and the first temperature of the air conditioner outer disc are obtained in real time in operation S230. When I isCurrent of the current>A×ICurrent before shutdown、TFirst temperature>TExit temperature of outer discEither of which occursWhen the air conditioner is started, the outdoor fan is started; when I isCurrent of the current≤A×ICurrent before shutdownAnd TFirst temperature≤TExit temperature of outer discAnd when the fan is in the stop state, the outdoor fan is controlled to be in the stop state continuously.
According to the embodiment of the present disclosure, the start and stop of the outdoor fan may also be controlled only according to the current, the current before the shutdown, the duration of the shutdown state, and the preset maximum shutdown time, and the current of the air conditioner compressor and the duration of the shutdown state are obtained in real time in operation S230. In particular, when ICurrent of the current>A×ICurrent before shutdown、tDuration of outdoor fan shutdown>tMaximum down time of outdoor fanWhen any one of the conditions occurs, starting the outdoor fan; when I isCurrent of the current≤A×ICurrent before shutdownAnd t isDuration of outdoor fan shutdown≤tMaximum down time of outdoor fanAnd when the fan is in the stop state, the outdoor fan is controlled to be in the stop state continuously.
According to the embodiment of the present disclosure, the start and stop of the outdoor fan may also be controlled only according to the current and the current before the stop, and the current of the air conditioner compressor is obtained in real time in operation S230. When I isCurrent of the current>A×ICurrent before shutdownWhen the air conditioner is started, the outdoor fan is started; when I isCurrent of the current≤A×ICurrent before shutdownAnd when the fan is in the stop state, the outdoor fan is controlled to be in the stop state continuously.
In the embodiment of the disclosure, the value range of the preset proportionality coefficient a is 1.5 to 3, and the preset exit temperature T of the outer diskExit temperature of outer discIs in the range of 20 ℃ to 30 ℃, and the preset maximum downtime tMaximum down time of outdoor fanThe value range of (a) is 2min to 5 min. The current of the air conditioner compressor is obtained in real time, and the first temperature of the air conditioner outer disc and/or the time parameter of the duration of the shutdown state are obtained in real time, so that the control speed is further increased.
In operation S250, a second temperature of the air conditioner outer panel is acquired.
The outdoor fan is in a refrigeration running state, the temperature of the outdoor disc of the air conditioner can be detected through the temperature sensor of the coil pipe of the outdoor unit of the air conditioner, and every other coil pipe is arrangedAcquiring the detected second temperature T of the outer disc of the air conditioner at set timeSecond temperature. The value range of the set time is 2min to 3 min.
And in operation S260, controlling the rotation speed of the outdoor fan according to the second temperature of the air conditioner outer disc and a preset outer disc temperature.
According to an embodiment of the present disclosure, when the second temperature TSecond temperatureWith a predetermined outer disc temperature TTemperature of outer plateDifference value T betweenSecond temperature-TTemperature of outer plateWhen the rotation speed is within the preset range, the rotation speed of the outdoor fan is controlled to be unchanged; when the second temperature T isSecond temperatureWith a predetermined outer disc temperature TTemperature of outer plateDifference value T betweenSecond temperature-TTemperature of outer plateWhen the rotating speed of the outdoor fan is higher than the preset range, increasing the rotating speed of the outdoor fan, for example, controlling the rotating speed of the outdoor fan to increase by 1 gear and increase to the maximum wind speed gear; when the second temperature T isSecond temperatureWith a predetermined outer disc temperature TTemperature of outer plateDifference value T betweenSecond temperature-TTemperature of outer plateAnd when the rotating speed of the outdoor fan is lower than the preset range, reducing the rotating speed of the outdoor fan, for example, controlling the rotating speed of the outdoor fan to be reduced by 1 gear, and reducing the rotating speed to a minimum wind speed gear at the lowest.
The preset range is a range formed by two different preset values, such as a first preset temperature difference value and a second preset temperature difference value]And the first temperature difference preset value is smaller than the second temperature difference preset value. When the first temperature difference preset value is less than or equal to TSecond temperature-TTemperature of outer plateWhen the temperature difference is less than or equal to the second temperature difference preset value, the rotating speed of the outdoor fan is controlled to be unchanged; when T isSecond temperature-TTemperature of outer plateWhen the temperature difference is larger than the second temperature difference preset value, the rotating speed of the outdoor fan is increased; when T isSecond temperature-TTemperature of outer plateAnd when the temperature difference is smaller than the first temperature difference preset value, reducing the rotating speed of the outdoor fan, for example, controlling the rotating speed of the outdoor fan to reduce by 1 gear, and reducing to a minimum wind speed gear at least. The first temperature difference preset value ranges from minus 1 ℃ to minus 2 ℃, and the second temperature difference preset value ranges from 1 ℃ to 2 ℃. Taking the first temperature difference preset value as-1 deg.C and the second temperature difference preset value as 1 deg.C as an example, the preset ranges are [ -1 deg.C, 1 deg.C]。
In the embodiment of the disclosure, when the outdoor fan is in the shutdown state, the current of the air conditioner compressor, the temperature of the air conditioner outer disc and the duration of the shutdown state are obtained in real time, and when any one of the current of the air conditioner compressor, the temperature of the air conditioner outer disc and the duration of the shutdown state is greater than the corresponding maximum threshold value, the outdoor fan is started without increasing other costs, and the outdoor fan has the advantages of higher control speed, high reliability, avoidance of exceeding of the pressure of an air conditioning system, and realization of the refrigeration effect of the air conditioner in the outdoor low-temperature environment.
Fig. 3 is a block diagram schematically illustrating an outdoor fan control apparatus according to an embodiment of the present invention. As shown in fig. 3, the outdoor fan control apparatus 300 includes an acquisition module 310 and a control module 320.
The acquisition module 310, for example, performs operation S110 for acquiring a state of the outdoor fan.
The control module 320 performs, for example, operation S120 for acquiring a current of the air conditioner compressor when the outdoor fan is in a shutdown state, acquiring a current before shutdown of the air conditioner compressor before shutdown of the outdoor fan, and controlling the start and stop of the outdoor fan according to the current and the current before shutdown.
The outdoor fan control device in this embodiment is used to execute the outdoor fan control method in the embodiment shown in fig. 1-2, and please refer to the outdoor fan control method in the embodiment shown in fig. 1-2 for details, which is not described herein again.
Another embodiment of the present disclosure provides an air conditioner, which includes a memory and a processor, where the memory stores a program, and the program is executed by the processor to implement the outdoor fan control method in the above embodiments.
The technical characteristics of the air conditioner are the same as those of the outdoor fan control method, and the advantages of the air conditioner are the same as those of the outdoor fan control method in the embodiment, so that the details are not repeated.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (9)

1. An outdoor fan control method for a cooling mode of an air conditioner, the method comprising:
acquiring the state of the outdoor fan;
when the state of the outdoor fan is a shutdown state, acquiring the current of an air conditioner compressor, acquiring the current of the air conditioner compressor before the shutdown of the outdoor fan, and controlling the starting and stopping of the outdoor fan according to the current and the current before the shutdown;
when the current is larger than the product of the current before shutdown and a preset proportionality coefficient, starting the outdoor fan;
and when the current is not greater than the product of the current before shutdown and a preset proportionality coefficient, controlling the state of the outdoor fan to be unchanged.
2. The outdoor fan control method according to claim 1, wherein the preset scaling factor is in a range of 1.5 to 3.
3. The outdoor fan control method according to any one of claims 1 to 2, wherein the controlling of the start and stop of the outdoor fan comprises:
starting the outdoor fan to enable the outdoor fan to operate at the lowest gear of rotation speed; or
And controlling the state of the outdoor fan to be a shutdown state.
4. The outdoor fan control method according to claim 1, wherein when the state of the outdoor fan is a shutdown state, the method further comprises:
acquiring a first temperature of an outer disc of the air conditioner, and controlling the starting and stopping of the outdoor fan according to the first temperature and a preset exit temperature of the outer disc; and/or
And acquiring the duration of the shutdown state, and controlling the starting and stopping of the outdoor fan according to the duration of the shutdown state and the preset longest shutdown time.
5. The outdoor fan control method according to claim 1, further comprising:
when the state of the outdoor fan is a refrigeration running state, acquiring a second temperature of an outer disc of the air conditioner; and controlling the rotating speed of the outdoor fan according to the second temperature of the outer disc of the air conditioner and the preset temperature of the outer disc.
6. The outdoor fan control method according to claim 5, wherein said obtaining a second temperature of an outer panel of an air conditioner comprises:
and acquiring a second temperature of the outer disc of the air conditioner at set intervals.
7. The outdoor fan control method according to claim 5 or 6, wherein the controlling the rotation speed of the outdoor fan according to the second temperature of the air conditioner outer disc and a preset outer disc temperature comprises:
when the difference value between the second temperature and the preset outer disc temperature is within a preset range, controlling the rotating speed of the outdoor fan to be unchanged;
when the difference value between the second temperature and the preset outer disc temperature is higher than the preset range, increasing the rotating speed of the outdoor fan;
and when the difference value between the second temperature and the preset outer disc temperature is lower than the preset range, reducing the rotating speed of the outdoor fan.
8. An outdoor fan control apparatus for a cooling mode of an air conditioner, the apparatus comprising:
the acquisition module is used for acquiring the state of the outdoor fan;
the control module is used for acquiring the current of the air conditioner compressor when the outdoor fan is in a shutdown state, acquiring the current of the air conditioner compressor before the outdoor fan is shut down, and controlling the starting and stopping of the outdoor fan according to the current and the current before the outdoor fan is shut down;
when the current is larger than the product of the current before shutdown and a preset proportionality coefficient, starting the outdoor fan;
and when the current is not greater than the product of the current before shutdown and a preset proportionality coefficient, controlling the state of the outdoor fan to be unchanged.
9. An air conditioner, characterized in that the air conditioner comprises:
a memory;
a processor, the memory storing a program that when executed by the processor implements the outdoor fan control method of any one of claims 1-7.
CN202010302575.4A 2020-04-16 2020-04-16 Outdoor fan control method and device and air conditioner Active CN111457540B (en)

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CN112594884B (en) * 2020-12-10 2022-02-18 珠海格力电器股份有限公司 Air conditioning unit and condenser fan control method and device thereof and storage medium
CN113864975A (en) * 2021-09-29 2021-12-31 珠海格力电器股份有限公司 Low-temperature refrigeration control method and device of variable frequency air conditioner and air conditioner

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