CN115031391B - Air conditioner control method and device, storage medium and electronic equipment - Google Patents

Air conditioner control method and device, storage medium and electronic equipment Download PDF

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Publication number
CN115031391B
CN115031391B CN202210584972.4A CN202210584972A CN115031391B CN 115031391 B CN115031391 B CN 115031391B CN 202210584972 A CN202210584972 A CN 202210584972A CN 115031391 B CN115031391 B CN 115031391B
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China
Prior art keywords
air conditioner
preset
outdoor fan
temperature
current
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CN202210584972.4A
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Chinese (zh)
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CN115031391A (en
Inventor
余伟立
陈国强
王辉
宋钦勇
刘欣慧
席晨馨
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Classifications

    • 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/87—Control 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
    • F24F11/871—Control 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—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
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/30—Velocity
    • F24F2110/32—Velocity of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • 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 invention provides an air conditioner control method, an air conditioner control device, a storage medium and electronic equipment, and relates to the technical field of air conditioners, wherein the air conditioner comprises an outdoor fan, and the method comprises the following steps: when the air conditioner operates in a preset mode, acquiring operation parameter information of the air conditioner; judging the operation parameter information of the air conditioner; when the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotation speed; when the operation parameter information of the air conditioner meets a second preset condition, controlling the outdoor fan to operate in a periodic start-stop mode at a second rotating speed; wherein the second rotational speed is greater than the first rotational speed. According to the technical scheme provided by the invention, the rotating speed of the outdoor fan can be flexibly controlled according to the operation parameter information of the air conditioner in the preset mode, so that the flexibility of controlling the air conditioner is improved, and the operation stability of the air conditioner is improved.

Description

Air conditioner control method and device, storage medium and electronic equipment
Technical Field
The present invention relates to the field of air conditioning technologies, and in particular, to an air conditioning control method, an air conditioning control device, a storage medium, and an electronic device.
Background
When the air conditioner operates in different modes, the outdoor fan rotating speed corresponding to the mode is available, and in the prior art, the outdoor fan rotating speed is fixed, so that corresponding technical problems can be generated when the air conditioner operates. For example, when the air conditioner is operated in the constant temperature dehumidification mode, the outdoor fan is operated at a lower rotation speed, and the lower rotation speed can cause a series of technical problems such as insufficient heat exchange of the condenser, temperature rise of the control panel and the like, so that the air conditioner is unstable to operate.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides an air conditioner control method, an air conditioner control device, a storage medium and electronic equipment, which can flexibly control the rotating speed of an outdoor fan according to the operation parameter information of an air conditioner in a preset mode, thereby improving the flexibility of air conditioner control and the stability of air conditioner operation.
In order to achieve the above purpose, the technical scheme of the application is realized as follows:
in a first aspect, an embodiment of the present application provides an air conditioner control method, where the air conditioner includes: an outdoor fan, the method comprising:
when the air conditioner operates in a preset mode, acquiring operation parameter information of the air conditioner;
judging the operation parameter information of the air conditioner;
When the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotation speed;
when the operation parameter information of the air conditioner meets a second preset condition, controlling the outdoor fan to operate in a periodic start-stop mode at a second rotating speed; wherein the second rotational speed is greater than the first rotational speed.
In some embodiments, the method further comprises: when the operation parameter information of the air conditioner meets a third preset condition, controlling the outdoor fan to continuously operate at a third rotating speed; wherein the third rotational speed is greater than the second rotational speed.
In some embodiments, the air conditioner further comprises: a condenser; the operation parameter information of the air conditioner comprises: the intermediate temperature of the condenser and the current outdoor ambient wind speed; the judging the operation parameter information of the air conditioner comprises the following steps:
judging whether the intermediate temperature of the condenser is smaller than or equal to a first preset temperature threshold value;
judging whether the current outdoor environment wind speed is smaller than or equal to a preset wind speed threshold value;
when the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotation speed, including:
When the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value and the current outdoor environment wind speed is smaller than or equal to the preset wind speed threshold value, controlling the outdoor fan to continuously run at the first rotation speed;
when the operation parameter information of the air conditioner meets a second preset condition, controlling the outdoor fan to operate in a periodic start-stop mode at a second rotating speed, including:
and when the intermediate temperature of the condenser is greater than the first preset temperature threshold value and the current outdoor environment wind speed is greater than the preset wind speed threshold value, controlling the outdoor fan to run in a periodic start-stop mode at the second rotating speed.
In some embodiments, the operation parameter information of the air conditioner further includes: the current of the outdoor fan; the judging the operation parameter information of the air conditioner further comprises:
judging whether the current of the outdoor fan is smaller than or equal to a preset current threshold value;
when the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotation speed, and further comprising:
when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value, the current outdoor environment wind speed is larger than the preset wind speed threshold value, and the current of the outdoor fan is smaller than or equal to the preset current threshold value, the outdoor fan is controlled to continuously run at the first rotational speed;
When the operation parameter information of the air conditioner meets a second preset condition, controlling the outdoor fan to operate in a periodic start-stop mode at a second rotating speed, and further comprising:
and when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value, the current outdoor environment wind speed is larger than the preset wind speed threshold value, and the current of the outdoor fan is larger than the preset current threshold value, controlling the outdoor fan to operate in a periodic start-stop mode at the second rotating speed.
In some embodiments, the air conditioner further comprises: an outdoor main board module; the operation parameter information of the air conditioner further comprises: the temperature of the outdoor main board module; the judging the operation parameter information of the air conditioner further comprises:
judging whether the temperature of the outdoor main board module is smaller than or equal to a second preset temperature threshold value;
when the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotation speed, and further comprising:
when the intermediate temperature of the condenser is greater than the first preset temperature threshold, the current outdoor environment wind speed is less than or equal to the preset wind speed threshold, and the temperature of the outdoor main board module is less than or equal to the second preset temperature threshold, controlling the outdoor fan to continuously run at the first rotational speed;
When the operation parameter information of the air conditioner meets a third preset condition, controlling the outdoor fan to continuously operate at a third rotating speed, including:
when the intermediate temperature of the condenser is greater than the first preset temperature threshold, the current outdoor environment wind speed is less than or equal to the preset wind speed threshold, and the temperature of the outdoor main board module is greater than the second preset temperature threshold, the outdoor fan is controlled to continuously run at the third rotating speed.
In some embodiments, the preset mode includes a constant temperature dehumidification mode; before said controlling said outdoor fan to continue operating at a first rotational speed, said method further comprises:
acquiring the current indoor environment temperature;
determining the first rotational speed based on the current indoor ambient temperature; the higher the current indoor environment temperature is, the higher the determined first rotating speed is.
In some embodiments, the preset mode includes a constant temperature dehumidification mode; before the controlling the outdoor fan to operate in a periodic start-stop mode at a second rotational speed, the method further comprises:
acquiring the current indoor environment temperature;
determining the operation duration of the outdoor fan in one period in the periodic start-stop mode based on the current indoor environment temperature; the higher the current indoor environment temperature is, the longer the operation duration in the determined period is.
In a second aspect, an embodiment of the present invention provides an air conditioner control device, including: an outdoor fan, the apparatus comprising:
an operation parameter obtaining unit, configured to obtain operation parameter information of the air conditioner when the air conditioner operates in a preset mode;
the judging unit is used for judging the operation parameter information of the air conditioner;
the control unit is used for controlling the outdoor fan to continuously run at a first rotational speed when the running parameter information of the air conditioner meets a first preset condition;
the control unit is also used for controlling the outdoor fan to operate in a periodic start-stop mode at a second rotating speed when the operation parameter information of the air conditioner meets a second preset condition; wherein the second rotational speed is greater than the first rotational speed.
In a third aspect, an embodiment of the present invention provides a storage medium having stored thereon program code that, when executed by a processor, implements the air conditioner control method according to any one of the above embodiments.
In a fourth aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes a memory and a processor, and the memory stores program codes that can be executed on the processor, and when the program codes are executed by the processor, the air conditioner control method according to any one of the foregoing embodiments is implemented.
According to the air conditioner control method, the device, the storage medium and the electronic equipment, when the air conditioner operates in the preset mode, the operation parameter information of the air conditioner is obtained, the operation parameter information of the air conditioner is judged, when the operation parameter information of the air conditioner meets the first preset condition, the outdoor fan is controlled to continuously operate at the first rotating speed, and when the operation parameter information of the air conditioner meets the second preset condition, the outdoor fan is controlled to operate in a periodic start-stop mode at the second rotating speed, wherein the second rotating speed is larger than the first rotating speed.
Drawings
The scope of the present disclosure will be better understood from the following detailed description of exemplary embodiments, read in conjunction with the accompanying drawings. The drawings included herein are:
FIG. 1 is a flow chart of a method according to an embodiment of the present invention;
FIG. 2 is a flow chart of a second method according to an embodiment of the invention;
FIG. 3 is a logic diagram of outdoor fan control in a constant temperature dehumidification mode in accordance with an embodiment of the present disclosure;
FIG. 4 is a logic diagram illustrating a control of the outdoor fan in a continuous operation mode according to an embodiment of the present invention;
FIG. 5 is a control logic diagram of a periodic start-stop mode of operation of an outdoor fan in an embodiment of the present invention;
fig. 6 is a block diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the implementation method of the present invention will be given with reference to the accompanying drawings and examples, by which the technical means are applied to solve the technical problems, and the implementation process for achieving the technical effects can be fully understood and implemented accordingly.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
Example 1
The embodiment of the invention provides an air conditioner control method, which comprises the following steps: as shown in fig. 1, the method in this embodiment includes: step S101, step S102, step S103, and step S104, the details of which are described in detail below:
step S101, when the air conditioner operates in a preset mode, acquiring operation parameter information of the air conditioner;
Step S102, judging the operation parameter information of the air conditioner;
step S103, when the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotation speed;
step S104, when the operation parameter information of the air conditioner meets a second preset condition, controlling the outdoor fan to operate in a periodic start-stop mode at a second rotating speed; wherein the second rotational speed is greater than the first rotational speed.
In order to further improve the flexibility of controlling the air conditioner, as shown in fig. 2, the method in this embodiment further includes: step S105, when the operation parameter information of the air conditioner meets a third preset condition, controlling the outdoor fan to continuously operate at a third rotating speed; wherein the third rotational speed is greater than the second rotational speed.
By adopting the technical scheme, the embodiment of the invention can flexibly control the rotating speed of the outdoor fan according to the operation parameter information of the air conditioner in a preset mode, thereby improving the flexibility of controlling the air conditioner and the stability of the operation of the air conditioner.
In this embodiment, the preset mode may be a constant temperature dehumidification mode, and of course, in practical application, the method provided by the embodiment of the present invention may be applied to other modes of the air conditioner according to actual needs to control the air conditioner more flexibly, which is not limited in this embodiment.
The following describes in detail the air conditioner control method provided by the embodiment of the present invention, taking a constant temperature dehumidification mode of an air conditioner as an example:
the air conditioner according to the present embodiment includes various functional components such as a condenser and an outdoor main board module, which enable the air conditioner to operate normally. The condenser is a heat exchanger in an air conditioner outdoor unit and is used for exchanging heat between high-temperature and high-pressure gaseous refrigerant and air outdoors to change the gaseous refrigerant into low-temperature and high-pressure liquid refrigerant; the outdoor main board module is used for controlling various functional components in the outdoor unit.
As shown in fig. 3, in order to obtain a better constant temperature dehumidification effect in the constant temperature dehumidification mode and improve the running stability of the air conditioner, in this embodiment, the running parameter information of the air conditioner includes: the determining the operation parameter information of the air conditioner in the step S102 includes: judging whether the intermediate temperature of the condenser is smaller than or equal to a first preset temperature threshold value, and judging whether the current outdoor environment wind speed is smaller than or equal to a preset wind speed threshold value.
Specifically, the intermediate temperature of the condenser refers to the temperature of the supercooling section of the condenser, and can be detected by installing a temperature sensing bulb at the relevant part of the condenser; the current outdoor ambient wind speed can be detected by installing an anemometer above the outdoor unit air outlet grille. The specific numerical values of the middle temperature of the condenser and the current outdoor environment wind speed are judged, so that whether the condenser is in a state of insufficient heat exchange currently can be known, and the rotating speed of the outdoor fan is correspondingly controlled according to the state.
In this embodiment, when the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotational speed includes: and when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value and the current outdoor environment wind speed is smaller than or equal to the preset wind speed threshold value, controlling the outdoor fan to continuously run at the first rotation speed.
In this embodiment, when the operation parameter information of the air conditioner meets a second preset condition, the controlling the outdoor fan to operate in a periodic start-stop manner at a second rotation speed includes: and when the intermediate temperature of the condenser is greater than the first preset temperature threshold value and the current outdoor environment wind speed is greater than the preset wind speed threshold value, controlling the outdoor fan to run in a periodic start-stop mode at the second rotating speed.
In this embodiment, the second rotation speed is greater than the first rotation speed and less than the rotation speed of the air conditioner in the cooling mode.
Specifically, assume that the intermediate temperature of the condenser is T c The first preset temperature threshold value is T, the current outdoor environment wind speed is V, and the preset wind speed threshold value is V x Then when T c > T, and V > V x When the condenser is in a state of insufficient heat exchange, the heat exchange efficiency needs to be improved, so that the outdoor fan needs to be switched into a periodic start-stop operation mode. Because the rotation speed of the outdoor fan is lower when the outdoor fan continuously operates, the heat quantity of the condenser which can be taken away is less, and because the wind speed of the outdoor environment is higher, the outdoor fan has a reverse wind resistance, the heat quantity of the condenser which can be taken away by the outdoor fan is further reduced, so that the heat exchange of the outdoor condenser is insufficient, and the temperature of the condenser is higher. The rotation speed of the periodic start-stop operation mode is higher than that of the continuous operation mode, more heat of the condenser can be taken away, but if the operation is kept at a high rotation speed all the time, the influence on the indoor environment temperature is larger (because the higher rotation speed of the outdoor fan strengthens the heat exchange of the condenser, so that the temperature of the refrigerant entering the room is reduced, the whole temperature of the evaporator part is also reduced, the lower air outlet temperature can reduce the indoor environment temperature, and the indoor environment temperature cannot be kept constant)And the temperature and the humidity of the indoor environment are controlled by the fixed influence), and the heat exchange of the condenser can be met and the temperature and the humidity of the indoor environment can be effectively controlled by the periodical start-stop operation of the outdoor fan. Through the technical scheme of the embodiment, under the constant temperature dehumidification mode of the air conditioner, a better constant temperature dehumidification effect can be obtained, and meanwhile, the condenser can be prevented from being in a state of insufficient heat exchange for a long time, so that the running stability of the air conditioner is improved.
And when T c T is less than or equal to T, and V is less than or equal to V x When the outdoor fan is in the low-speed state, the outdoor fan is considered to continuously run at the low rotating speed at present, the heat exchange of the condenser can be met, the outdoor environment wind speed is low, the influence on the outdoor fan is small, and therefore the outdoor fan is controlled to continuously run at the low first rotating speed.
As shown in fig. 3, in order to further obtain a better constant-temperature dehumidification effect in the constant-temperature dehumidification mode, and further improve the running stability of the air conditioner, in this embodiment, the running parameter information of the air conditioner further includes: the determining the operation parameter information of the air conditioner in the step S102 further includes: and judging whether the current of the outdoor fan is smaller than or equal to a preset current threshold value.
In this embodiment, when the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotational speed further includes: and when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold, the current outdoor environment wind speed is larger than the preset wind speed threshold, and the current of the outdoor fan is smaller than or equal to the preset current threshold, controlling the outdoor fan to continuously run at the first rotational speed.
In this embodiment, when the operation parameter information of the air conditioner meets a second preset condition, the controlling the outdoor fan to operate in a periodic start-stop manner at a second rotation speed further includes: and when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value, the current outdoor environment wind speed is larger than the preset wind speed threshold value, and the current of the outdoor fan is larger than the preset current threshold value, controlling the outdoor fan to operate in a periodic start-stop mode at the second rotating speed.
Specifically, assume that the intermediate temperature of the condenser is T c The first preset temperature threshold value is T, the current outdoor environment wind speed is V, and the preset wind speed threshold value is V x The current of the outdoor fan is I, and the preset current threshold value is I x Then when T c T is less than or equal to T, and V is more than V x I is less than or equal to I x And when the outdoor fan is controlled to continuously operate at the lower first rotation speed. This is because if the intermediate temperature of the condenser is low, but when the current outdoor environment wind speed is high, the system cannot confirm the current heat exchange state of the condenser, so that the current of the outdoor fan is continuously judged, if the current of the outdoor fan is also low at this time, the outdoor fan is normally operated at this time, the high wind speed of the outdoor environment has no influence on the outdoor fan, and the requirements of constant-temperature dehumidification and system stability can be met by controlling the continuous operation of the outdoor fan at the low first rotation speed at this time.
And when T c T is less than or equal to T, and V is more than V x And I > I x When the intermediate temperature of the condenser is low, the current outdoor environment wind speed is high, and the current of the outdoor fan is high, the condition that the outdoor fan is reduced in rotating speed or stopped or reversed due to the fact that the outdoor environment wind speed is too high at the moment is indicated, and the normal operation of the fan is influenced is indicated, so that the outdoor fan needs to be controlled to operate in a periodic start-stop mode at a second rotating speed higher than the first rotating speed at the moment, the normal operation of the fan is ensured, and the stability of the system is maintained.
As shown in fig. 3, in order to further obtain a better constant-temperature dehumidification effect in the constant-temperature dehumidification mode, and further improve the running stability of the air conditioner, in this embodiment, the running parameter information of the air conditioner further includes: the determining the operation parameter information of the air conditioner in step S102 further includes: and judging whether the temperature of the outdoor main board module is smaller than or equal to a second preset temperature threshold value.
Specifically, the temperature of the outdoor main board module can be detected through a temperature-sensitive resistor of the outdoor main board module, when the temperature of the outdoor main board module changes, the resistance value of the temperature-sensitive resistor also changes, so that the voltage value on the temperature-sensitive resistor changes, and the temperature of the outdoor main board module can be obtained by measuring the voltage value.
In this embodiment, when the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotational speed further includes: when the intermediate temperature of the condenser is greater than the first preset temperature threshold, the current outdoor environment wind speed is less than or equal to the preset wind speed threshold, and the temperature of the outdoor main board module is less than or equal to the second preset temperature threshold, the outdoor fan is controlled to continuously run at the first rotational speed.
In this embodiment, when the operation parameter information of the air conditioner meets a third preset condition, controlling the outdoor fan to continuously operate at a third rotation speed includes: when the intermediate temperature of the condenser is greater than the first preset temperature threshold, the current outdoor environment wind speed is less than or equal to the preset wind speed threshold, and the temperature of the outdoor main board module is greater than the second preset temperature threshold, the outdoor fan is controlled to continuously run at the third rotating speed.
Specifically, assume that the intermediate temperature of the condenser is T c The first preset temperature threshold value is T, the current outdoor environment wind speed is V, and the preset wind speed threshold value is V x The temperature of the outdoor main board module is T m The second preset temperature threshold is T x Then when T c More than T and V is less than or equal to V x When the temperature T of the outdoor main board module is continuously detected m If the temperature T of the outdoor main board module is at this time m Less than or equal to a second preset temperature threshold T x T, i.e m ≤T x The outdoor main board module temperature is normal, and the outdoor fan is controlled to continuously run at a lower first rotation speed, so that the requirements of constant-temperature dehumidification and system stability can be met; if the temperature T of the outdoor main board module is at this time m Greater than a second preset temperature threshold T x T, i.e m ＞T x If the continuous operation is considered to meet the heat exchange requirement of the condenser, the rotating speed of the outdoor fan is lowerThe temperature of the outdoor main board module is higher, and the continuous running rotating speed of the outdoor fan is required to be increased to Rz at the moment so as to reduce the temperature of the outdoor main board module and improve the reliability of the whole air conditioner, namely, the outdoor fan is controlled to continuously run at a third rotating speed higher than the first rotating speed and the second rotating speed at the moment.
In order to determine the rotation speed of the outdoor fan more accurately, before the outdoor fan is controlled to continuously operate at the first rotation speed in step S103, the method according to the embodiment further includes: acquiring the current indoor environment temperature; determining the first rotational speed based on the current indoor ambient temperature; the higher the current indoor environment temperature is, the higher the determined first rotating speed is.
Specifically, as shown in fig. 4, when the air conditioner is in the constant temperature dehumidification mode and the system determines that the outdoor fan is continuously operating at a first rotational speed, the system will detect an indoor ambient temperature, determine the first rotational speed Rx from the indoor ambient temperature, and continuously operate the outdoor fan at a relatively low rotational speed Rx. In this embodiment, the indoor environment temperature is divided into 5 parts, and the higher the temperature is, the higher the rotation speed is: (1) TN is less than or equal to 16 ℃, rx=R1; (2) 16 ℃ is less than or equal to 22 ℃, rx=R2; (3) 22 ℃ < TN less than or equal to 26 ℃, rx=R3; (4) 26 ℃ < TN less than or equal to 30 ℃, rx=R4; (5) TN > 30 ℃, rx=r5, wherein R1 < R2 < R3 < R4 < R5. The correspondence between the current indoor environment temperature and the first rotational speed is shown in the following table 1:
TABLE 1
For example, specific values of R1, R2, R3, R4, and R5 may be 100rpm, 120rpm, 180rpm, 220rpm, and 250rpm, respectively, and of course, R1 to R5 may be set to other values according to actual needs, which is not particularly limited in this embodiment.
In order to determine the operation duration of the outdoor fan more accurately, before controlling the outdoor fan to operate at the second rotation speed in the periodic start-stop manner in the above step S104, the method further includes: acquiring the current indoor environment temperature; determining the operation duration of the outdoor fan in one period in the periodic start-stop mode based on the current indoor environment temperature; the higher the current indoor environment temperature is, the longer the operation duration in the determined period is.
Specifically, as shown in fig. 5, when the air conditioner is in the constant temperature dehumidification mode and the system determines that the outdoor fan is operated in a periodic start-stop mode at the second rotation speed, the system detects the indoor environment temperature, and determines the operation duration of the outdoor fan in one period through the indoor environment temperature. In this embodiment, the indoor environment temperature is divided into 5 parts, and the higher the temperature is, the longer the operation duration of the outdoor fan in one period is: (1) TN is less than or equal to 16 ℃, t=t1; (2) TN is more than 16 ℃ and less than or equal to 22 ℃, t=t2; (3) TN is more than 22 ℃ and less than or equal to 26 ℃, t=t3; (4) 26 ℃ is less than or equal to TN and less than or equal to 30 ℃, t=t4; (5) TN > 30 ℃, t=t5, where t1 < t2 < t3 < t4 < t5. The correspondence between the current indoor environment temperature and the operation time of the outdoor fan in one period is shown in the following table 2:
TABLE 2
For example, when one period is 1 minute, specific values of t1, t2, t3, t4, t5 may be 10s, 20s, 30s, 40s, 50s, respectively. The value of the outdoor fan speed R may be set to 300rpm. At this time, when the indoor ambient temperature tn=28℃, the outdoor fan would be operated at 300rpm for 40s, for 20s, and then operated in the above-described manner for the next 1 minute in 1 minute. Of course, t1 to t5 and R may be set to other values according to actual needs, and this embodiment is not particularly limited.
In this embodiment, the specific value of the third rotation speed Rz may be selected from 600 to 800rpm, for example, 700rpm. Of course, rz may be set to other values according to actual needs, as long as it is greater than the first rotation speed and the second rotation speed, which is not particularly limited in this embodiment.
In practical application, when a user starts up, that is, sets the air conditioner to operate in the constant temperature dehumidification mode, one possible operation mode is as follows before the system executes the method described in this embodiment: the system controls the outdoor fan to default to the continuous operation mode for a period of time, i.e., the system controls the outdoor fan to operate at a lower rotational speed relative to the normal mode for a period of time. After the system has been operating steadily for a period of time (e.g., 10-15 minutes), the system automatically detects the intermediate temperature of the outdoor condenser and the outdoor ambient wind speed.
Wherein, the above-mentioned "normal mode" refers to the existing cooling mode of the air conditioner. In the air conditioner with the refrigerating capacity between 2kw and 5kw, the rotating speed of the outdoor fan in the normal refrigerating mode is generally 650-900 rpm. The rotating speed of the outdoor fan in the constant temperature dehumidification state is generally 100-300 rpm, which is 10-45% of that in the normal mode.
According to the air conditioner control method provided by the embodiment of the invention, when the air conditioner operates in the preset mode, the operation parameter information of the air conditioner is obtained, the operation parameter information of the air conditioner is judged, when the operation parameter information of the air conditioner meets the first preset condition, the outdoor fan is controlled to continuously operate at the first rotating speed, and when the operation parameter information of the air conditioner meets the second preset condition, the outdoor fan is controlled to operate in a periodic start-stop mode at the second rotating speed, wherein the second rotating speed is larger than the first rotating speed.
Example two
Corresponding to the method embodiment, the invention also provides an air conditioner control device, which comprises: as shown in fig. 6, the outdoor fan includes:
an operation parameter obtaining unit 201, configured to obtain operation parameter information of the air conditioner when the air conditioner operates in a preset mode;
a judging unit 202, configured to judge operation parameter information of the air conditioner;
a control unit 203, configured to control the outdoor fan to continuously operate at a first rotational speed when the operation parameter information of the air conditioner satisfies a first preset condition;
the control unit 203 is further configured to control the outdoor fan to operate in a periodic start-stop manner at a second rotation speed when the operation parameter information of the air conditioner meets a second preset condition; wherein the second rotational speed is greater than the first rotational speed.
Further, the control unit 203 is further configured to control the outdoor fan to continuously operate at a third rotation speed when the operation parameter information of the air conditioner meets a third preset condition; wherein the third rotational speed is greater than the second rotational speed.
In this embodiment, the air conditioner further includes: a condenser; the operation parameter information of the air conditioner comprises: the intermediate temperature of the condenser and the current outdoor ambient wind speed; the judging unit 202 judges the operation parameter information of the air conditioner in the following manner:
Judging whether the intermediate temperature of the condenser is smaller than or equal to a first preset temperature threshold value;
judging whether the current outdoor environment wind speed is smaller than or equal to a preset wind speed threshold value;
the control unit 203 controls the outdoor fan to continuously operate at the first rotational speed in the following manner:
when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value and the current outdoor environment wind speed is smaller than or equal to the preset wind speed threshold value, controlling the outdoor fan to continuously run at the first rotation speed;
the control unit 203 controls the outdoor fan to operate in a periodic start-stop mode at the second rotation speed in the following manner:
and when the intermediate temperature of the condenser is greater than the first preset temperature threshold value and the current outdoor environment wind speed is greater than the preset wind speed threshold value, controlling the outdoor fan to run in a periodic start-stop mode at the second rotating speed.
In this embodiment, the operation parameter information of the air conditioner further includes: the current of the outdoor fan; the judging unit 202 also judges the operation parameter information of the air conditioner in the following manner:
judging whether the current of the outdoor fan is smaller than or equal to a preset current threshold value;
The control unit 203 further controls the outdoor fan to continuously operate at the first rotational speed in the following manner:
when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value, the current outdoor environment wind speed is larger than the preset wind speed threshold value, and the current of the outdoor fan is smaller than or equal to the preset current threshold value, the outdoor fan is controlled to continuously run at the first rotational speed;
the control unit 203 further controls the outdoor fan to operate in a periodic start-stop manner at the second rotation speed in the following manner:
and when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value, the current outdoor environment wind speed is larger than the preset wind speed threshold value, and the current of the outdoor fan is larger than the preset current threshold value, controlling the outdoor fan to operate in a periodic start-stop mode at the second rotating speed.
In this embodiment, the air conditioner further includes: an outdoor main board module; the operation parameter information of the air conditioner further comprises: the temperature of the outdoor main board module; the judging unit 202 also judges the operation parameter information of the air conditioner in the following manner:
Judging whether the temperature of the outdoor main board module is smaller than or equal to a second preset temperature threshold value;
the control unit 203 further controls the outdoor fan to continuously operate at the first rotational speed in the following manner:
when the intermediate temperature of the condenser is greater than the first preset temperature threshold, the current outdoor environment wind speed is less than or equal to the preset wind speed threshold, and the temperature of the outdoor main board module is less than or equal to the second preset temperature threshold, controlling the outdoor fan to continuously run at the first rotational speed;
the control unit 203 further controls the outdoor fan to continuously operate at the third rotation speed in the following manner:
when the intermediate temperature of the condenser is greater than the first preset temperature threshold, the current outdoor environment wind speed is less than or equal to the preset wind speed threshold, and the temperature of the outdoor main board module is greater than the second preset temperature threshold, the outdoor fan is controlled to continuously run at the third rotating speed.
In this embodiment, the preset mode includes a constant temperature dehumidification mode; the device of this embodiment further includes:
the first temperature acquisition unit is used for acquiring the current indoor environment temperature before controlling the outdoor fan to continuously run at a first rotation speed;
A first determining unit configured to determine the first rotation speed based on the current indoor environment temperature; the higher the current indoor environment temperature is, the higher the determined first rotating speed is.
In this embodiment, the preset mode includes a constant temperature dehumidification mode; the device of this embodiment further includes:
the second temperature acquisition unit is used for acquiring the current indoor environment temperature before controlling the outdoor fan to run in a periodic start-stop mode at a second rotating speed;
the second determining unit is used for determining the operation duration of the outdoor fan in one period in the periodic start-stop mode based on the current indoor environment temperature; the higher the current indoor environment temperature is, the longer the operation duration in the determined period is.
The working principle, working procedure, etc. of the above-mentioned device relate to specific embodiments, and reference may be made to specific embodiments of the air conditioner control method provided by the present invention, and the same technical contents will not be described in detail herein.
According to the air conditioner control device provided by the embodiment of the invention, when the air conditioner operates in the preset mode, the operation parameter information of the air conditioner is obtained, the operation parameter information of the air conditioner is judged, when the operation parameter information of the air conditioner meets the first preset condition, the outdoor fan is controlled to continuously operate at the first rotating speed, and when the operation parameter information of the air conditioner meets the second preset condition, the outdoor fan is controlled to operate in a periodic start-stop mode at the second rotating speed, wherein the second rotating speed is larger than the first rotating speed.
Example III
According to an embodiment of the present invention, there is also provided a storage medium having stored thereon program code which, when executed by a processor, implements the air conditioner control method according to any one of the above-described embodiments.
Example IV
According to an embodiment of the present invention, there is also provided an electronic device including a memory and a processor, where the memory stores program code executable on the processor, and when the program code is executed by the processor, the air conditioner control method according to any one of the foregoing embodiments is implemented.
According to the air conditioner control method, the device, the storage medium and the electronic equipment, when the air conditioner operates in the preset mode, the operation parameter information of the air conditioner is obtained, the operation parameter information of the air conditioner is judged, when the operation parameter information of the air conditioner meets the first preset condition, the outdoor fan is controlled to continuously operate at the first rotating speed, and when the operation parameter information of the air conditioner meets the second preset condition, the outdoor fan is controlled to operate in a periodic start-stop mode at the second rotating speed, wherein the second rotating speed is larger than the first rotating speed.
The embodiment of the invention provides two control methods of an outdoor fan aiming at the constant temperature dehumidification function of an air conditioner, which comprise the following steps: (1) continuous operation mode: after entering the constant temperature dehumidification mode, the system operates at a lower outdoor fan speed. The air conditioning system in the mode has good stability and is more beneficial to indoor temperature and humidity control. (2) Intermittent operation mode: after entering the constant temperature dehumidification mode, the outdoor fan is periodically started and stopped at a higher rotating speed than the continuous operation rotating speed and at a lower rotating speed than the conventional refrigeration rotating speed. When the wind speed of the outdoor environment is high, the mode is more beneficial to heat exchange of the condenser, heat dissipation of the main board components of the external machine and indoor temperature and humidity control. According to the invention, the middle temperature of the outdoor condenser, the outdoor ambient wind speed and the outdoor fan current are judged, so that the operation mode of the outdoor fan is flexibly switched, the system operation stability and the indoor temperature and humidity control are facilitated, and the reliability of the outdoor fan, the outdoor main board module and the whole machine is improved.
The invention solves the problems of large indoor environment temperature change and high outdoor main board component temperature in the constant temperature dehumidification state. The indoor environment temperature is controlled accurately, the user comfort is improved, the main board module of the outdoor unit is protected (faults caused by overhigh temperature are avoided), and the service life and reliability of the whole machine are improved.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of elements is merely a logical functional division, and there may be additional divisions of actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment of the present application.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention is essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising several instructions for causing an electronic device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Although the embodiments of the present invention are disclosed above, the embodiments are only used for the convenience of understanding the present invention, and are not intended to limit the present invention. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is still subject to the scope of the present disclosure as defined by the appended claims.

Claims (8)

1. An air conditioner control method, the air conditioner comprising: an outdoor fan, characterized in that the method comprises:
when the air conditioner operates in a preset mode, acquiring operation parameter information of the air conditioner; the preset mode comprises a constant temperature dehumidification mode;
judging the operation parameter information of the air conditioner;
when the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotation speed;
when the operation parameter information of the air conditioner meets a second preset condition, controlling the outdoor fan to operate in a periodic start-stop mode at a second rotating speed; wherein the second rotational speed is greater than the first rotational speed;
the air conditioner further includes: a condenser; the operation parameter information of the air conditioner comprises: the intermediate temperature of the condenser, the current outdoor environment wind speed and the current of the outdoor fan; the intermediate temperature of the condenser refers to the condenser subcooling section temperature; the judging the operation parameter information of the air conditioner comprises the following steps:
judging whether the intermediate temperature of the condenser is smaller than or equal to a first preset temperature threshold value;
judging whether the current outdoor environment wind speed is smaller than or equal to a preset wind speed threshold value;
Judging whether the current of the outdoor fan is smaller than or equal to a preset current threshold value; when the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotation speed, including:
when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value and the current outdoor environment wind speed is smaller than or equal to the preset wind speed threshold value, controlling the outdoor fan to continuously run at the first rotation speed;
when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value, the current outdoor environment wind speed is larger than the preset wind speed threshold value, and the current of the outdoor fan is smaller than or equal to the preset current threshold value, the outdoor fan is controlled to continuously run at the first rotational speed;
when the operation parameter information of the air conditioner meets a second preset condition, controlling the outdoor fan to operate in a periodic start-stop mode at a second rotating speed, including:
when the intermediate temperature of the condenser is greater than the first preset temperature threshold value and the current outdoor environment wind speed is greater than the preset wind speed threshold value, controlling the outdoor fan to run in a periodic start-stop mode at the second rotating speed;
And when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value, the current outdoor environment wind speed is larger than the preset wind speed threshold value, and the current of the outdoor fan is larger than the preset current threshold value, controlling the outdoor fan to operate in a periodic start-stop mode at the second rotating speed.
2. The air conditioner control method according to claim 1, characterized in that the method further comprises: when the operation parameter information of the air conditioner meets a third preset condition, controlling the outdoor fan to continuously operate at a third rotating speed; wherein the third rotational speed is greater than the second rotational speed.
3. The air conditioner control method according to claim 1, wherein the air conditioner further comprises: an outdoor main board module; the operation parameter information of the air conditioner further comprises: the temperature of the outdoor main board module; the judging the operation parameter information of the air conditioner further comprises:
judging whether the temperature of the outdoor main board module is smaller than or equal to a second preset temperature threshold value;
when the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotation speed, and further comprising:
When the intermediate temperature of the condenser is greater than the first preset temperature threshold, the current outdoor environment wind speed is less than or equal to the preset wind speed threshold, and the temperature of the outdoor main board module is less than or equal to the second preset temperature threshold, controlling the outdoor fan to continuously run at the first rotational speed;
when the operation parameter information of the air conditioner meets a third preset condition, controlling the outdoor fan to continuously operate at a third rotating speed, including:
when the intermediate temperature of the condenser is greater than the first preset temperature threshold, the current outdoor environment wind speed is less than or equal to the preset wind speed threshold, and the temperature of the outdoor main board module is greater than the second preset temperature threshold, the outdoor fan is controlled to continuously run at the third rotating speed.
4. The air conditioner control method according to claim 1, wherein the preset mode includes a constant temperature dehumidification mode; before said controlling said outdoor fan to continue operating at a first rotational speed, said method further comprises:
acquiring the current indoor environment temperature;
determining the first rotational speed based on the current indoor ambient temperature; the higher the current indoor environment temperature is, the higher the determined first rotating speed is.
5. The air conditioner control method according to claim 1, wherein before the controlling the outdoor fan to operate in a periodic start-stop manner at a second rotation speed, the method further comprises:
acquiring the current indoor environment temperature;
determining the operation duration of the outdoor fan in one period in the periodic start-stop mode based on the current indoor environment temperature; the higher the current indoor environment temperature is, the longer the operation duration in the determined period is.
6. An air conditioner control device, the air conditioner comprising: an outdoor fan, characterized in that the device comprises:
an operation parameter obtaining unit, configured to obtain operation parameter information of the air conditioner when the air conditioner operates in a preset mode;
the judging unit is used for judging the operation parameter information of the air conditioner;
the control unit is used for controlling the outdoor fan to continuously run at a first rotational speed when the running parameter information of the air conditioner meets a first preset condition;
the control unit is also used for controlling the outdoor fan to operate in a periodic start-stop mode at a second rotating speed when the operation parameter information of the air conditioner meets a second preset condition; wherein the second rotational speed is greater than the first rotational speed;
The air conditioner further includes: a condenser; the operation parameter information of the air conditioner comprises: the intermediate temperature of the condenser, the current outdoor environment wind speed and the current of the outdoor fan; the intermediate temperature of the condenser refers to the condenser subcooling section temperature; the judging the operation parameter information of the air conditioner comprises the following steps:
judging whether the intermediate temperature of the condenser is smaller than or equal to a first preset temperature threshold value;
judging whether the current outdoor environment wind speed is smaller than or equal to a preset wind speed threshold value;
judging whether the current of the outdoor fan is smaller than or equal to a preset current threshold value; when the operation parameter information of the air conditioner meets a first preset condition, controlling the outdoor fan to continuously operate at a first rotation speed, including:
when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value and the current outdoor environment wind speed is smaller than or equal to the preset wind speed threshold value, controlling the outdoor fan to continuously run at the first rotation speed;
when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value, the current outdoor environment wind speed is larger than the preset wind speed threshold value, and the current of the outdoor fan is smaller than or equal to the preset current threshold value, the outdoor fan is controlled to continuously run at the first rotational speed;
When the operation parameter information of the air conditioner meets a second preset condition, controlling the outdoor fan to operate in a periodic start-stop mode at a second rotating speed, including:
when the intermediate temperature of the condenser is greater than the first preset temperature threshold value and the current outdoor environment wind speed is greater than the preset wind speed threshold value, controlling the outdoor fan to run in a periodic start-stop mode at the second rotating speed;
and when the intermediate temperature of the condenser is smaller than or equal to the first preset temperature threshold value, the current outdoor environment wind speed is larger than the preset wind speed threshold value, and the current of the outdoor fan is larger than the preset current threshold value, controlling the outdoor fan to operate in a periodic start-stop mode at the second rotating speed.
7. A storage medium having program code stored thereon, wherein the program code, when executed by a processor, implements the air conditioner control method according to any one of claims 1 to 5.
8. An electronic device comprising a memory, a processor, the memory having stored thereon program code executable on the processor, the program code, when executed by the processor, implementing the air conditioning control method of any of claims 1 to 5.
CN202210584972.4A 2022-05-26 2022-05-26 Air conditioner control method and device, storage medium and electronic equipment Active CN115031391B (en)

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CN109341006A (en) * 2017-08-01 2019-02-15 奥克斯空调股份有限公司 Convertible frequency air-conditioner control device and control method
CN111322736A (en) * 2020-03-10 2020-06-23 青岛海尔空调器有限总公司 Air conditioner external unit control method and device and air conditioner system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2221956A1 (en) * 2007-11-16 2010-08-25 Daikin Industries, Ltd. Motor current calculation device and air conditioning device
CN104214895A (en) * 2014-08-22 2014-12-17 珠海格力电器股份有限公司 Method and system for controlling constant-temperature dehumidification of air conditioner
CN105571074A (en) * 2016-01-18 2016-05-11 珠海格力电器股份有限公司 Method and device for controlling rotation speed of air conditioner external fan
CN106766449A (en) * 2017-01-03 2017-05-31 奥克斯空调股份有限公司 A kind of compressor protection method during air-conditioning heating HTHP
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