CN114738955A - Air conditioner and control method and control device thereof - Google Patents

Air conditioner and control method and control device thereof Download PDF

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Publication number
CN114738955A
CN114738955A CN202210334032.XA CN202210334032A CN114738955A CN 114738955 A CN114738955 A CN 114738955A CN 202210334032 A CN202210334032 A CN 202210334032A CN 114738955 A CN114738955 A CN 114738955A
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China
Prior art keywords
current
air conditioner
operation mode
rotating speed
control strategy
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Pending
Application number
CN202210334032.XA
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Chinese (zh)
Inventor
杨中锋
宁贻江
徐军瑞
吴亚孟
陈安江
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202210334032.XA priority Critical patent/CN114738955A/en
Publication of CN114738955A publication Critical patent/CN114738955A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/38—Failure diagnosis
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • 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
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/10—Weather information or forecasts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner and a control method and a control device thereof, and aims to improve the working reliability, intelligence and use comfort of the air conditioner. The control method comprises the following steps: acquiring the current working voltage of the air conditioner; when the current working voltage meets a preset voltage condition, executing the following control process: acquiring the type and the current operation mode of the air conditioner; determining a current reference parameter according to the current operation mode; the reference parameters comprise the current outdoor environment temperature and the current indoor unit coil temperature; and determining the current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter, and controlling the air conditioner to operate according to the current control strategy.

Description

Air conditioner and control method and control device thereof
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to an air conditioner and a control method and a control device thereof.
Background
In the existing control scheme of the air conditioner, the operation of the air conditioner is usually tested in a laboratory by setting test conditions, and preferred operation parameter values under different conditions are obtained and solidified in an air conditioner program. And when the air conditioner works at the user side, controlling the operation of the air conditioner according to the set parameter value.
In the prior art, the influence of different working voltages of the air conditioner on the operation parameter value is not generally considered when the operation parameter value of the air conditioner is determined. When the air conditioner is used at a user side, the operation parameters can not be adjusted according to the working voltage of the air conditioner, the air conditioner is shut down easily, the working reliability of the air conditioner is influenced, the environmental comfort of an air conditioner user is reduced, and the intelligence and the competitiveness of the air conditioner are reduced.
Disclosure of Invention
The invention aims to provide a control method and a control device of an air conditioner, which can adaptively adjust the control strategy of the air conditioner according to the working voltage of the air conditioner, and achieve the technical effects of improving the working reliability, intelligence and use comfort of the air conditioner.
In order to achieve the purpose, the control method of the air conditioner provided by the invention adopts the following technical scheme:
a control method of an air conditioner, the control method comprising:
acquiring the current working voltage of the air conditioner;
when the current working voltage meets a preset voltage condition, executing the following control process:
acquiring the type and the current operation mode of the air conditioner; the types comprise a fixed-frequency air conditioner and a variable-frequency air conditioner, and the current operation mode comprises a refrigeration mode and a heating mode;
determining a current reference parameter according to the current operation mode; the reference parameters comprise the current outdoor environment temperature and the current indoor unit coil temperature;
and determining the current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter, and controlling the air conditioner to operate according to the current control strategy.
In some embodiments of the present application, determining a current reference parameter according to the current operating mode includes:
when the current operation mode is the refrigeration mode, determining the current reference parameter as the current outdoor environment temperature;
and when the current operation mode is the heating mode, determining the current reference parameter as the current inner machine coil temperature.
In some embodiments of the present application, determining a current control strategy of an air conditioner according to the type, the current operation mode, and the current reference parameter includes:
when the type is the fixed-frequency air conditioner, the current operation mode is the refrigeration mode, and the current reference parameter is the current outdoor environment temperature, judging whether the current outdoor environment temperature meets a first preset outer loop temperature condition;
when the current outdoor environment temperature meets the first preset outer ring temperature condition, determining that the current control strategy of the air conditioner comprises: the rotating speed of the indoor fan is reduced to the lowest allowable rotating speed; maintaining the rotating speed of the outdoor fan;
when the current outdoor environment temperature does not meet the first preset outer loop temperature condition, determining that the current control strategy of the air conditioner comprises: the rotating speed of the indoor fan is reduced to the lowest allowable rotating speed; the outdoor fan speed is increased to the maximum allowable speed.
In some embodiments of the present application, determining a current control strategy of an air conditioner according to the type, the current operation mode, and the current reference parameter includes:
when the type is the fixed-frequency air conditioner, the current operation mode is the heating mode, and the current reference parameter is the current inner machine coil temperature, judging whether the current inner machine coil temperature meets a first preset inner coil temperature condition;
when the current inner machine coil temperature meets the first preset inner coil temperature condition, determining the current control strategy of the air conditioner to comprise: increasing the rotating speed of the indoor fan; reducing the rotating speed of the outdoor fan;
when the current inner machine coil temperature does not meet the first preset inner coil temperature condition, determining the current control strategy of the air conditioner to comprise: maintaining the rotating speed of the indoor fan; and maintaining the rotating speed of the outdoor fan.
In some embodiments of the present application, determining a current control strategy of an air conditioner according to the type, the current operation mode, and the current reference parameter includes:
when the type is the variable frequency air conditioner, the current operation mode is the refrigeration mode, and the current reference parameter is the current outdoor environment temperature, judging whether the current outdoor environment temperature meets a second preset outer loop temperature condition;
when the current outdoor environment temperature meets the second preset outer ring temperature condition, determining the current control strategy of the air conditioner comprises the following steps: the rotating speed of the indoor fan is reduced to the lowest allowable rotating speed; compressor frequency maintenance;
when the current outdoor environment temperature does not meet the second preset outer loop temperature condition, determining that the current control strategy of the air conditioner comprises: reducing the rotating speed of the indoor fan; the rotating speed of the outdoor fan is increased to the maximum allowable rotating speed; the exhaust temperature maximum is reduced.
In some embodiments of the present application, determining a current control strategy of an air conditioner according to the type, the current operation mode, and the current reference parameter includes:
when the type is the variable frequency air conditioner, the current operation mode is the heating mode, and the current reference parameter is the current inner machine coil temperature, judging whether the current inner machine coil temperature meets a second preset inner coil temperature condition;
when the current inner machine coil temperature meets the second preset inner machine coil temperature condition, determining the current control strategy of the air conditioner to comprise: increasing the rotating speed of the indoor fan; reducing the rotating speed of the outdoor fan; increasing the opening of the expansion valve;
when the current inner machine coil temperature does not meet the second preset inner machine coil temperature condition, determining the current control strategy of the air conditioner to comprise: increasing the rotating speed of the indoor fan; maintaining the rotating speed of the outdoor fan; the opening degree of the expansion valve is increased.
In order to achieve the above purpose, the control device of the air conditioner provided by the invention adopts the following technical scheme:
a control device of an air conditioner, the control device comprising:
the current working voltage acquisition unit is used for acquiring the current working voltage of the air conditioner;
the current working voltage judging unit is used for judging whether the current working voltage meets a preset voltage condition or not and outputting a judgment result;
the type obtaining unit is used for obtaining the type of the air conditioner at least when the current working voltage meets the preset voltage condition; the types comprise a fixed frequency air conditioner and a variable frequency air conditioner;
a current operation mode obtaining unit, configured to obtain a current operation mode of the air conditioner at least when the current operating voltage meets the preset voltage condition; the current operation mode comprises a cooling mode and a heating mode;
a current reference parameter obtaining unit, configured to determine a current reference parameter according to the current operation mode; the reference parameters comprise the current outdoor environment temperature and the current indoor unit coil temperature;
the current control strategy determining unit is used for determining the current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter;
and the control unit is used for controlling the operation of the air conditioner according to the current control strategy.
The invention further provides an air conditioner, which comprises an indoor unit and an outdoor unit, and the air conditioner further comprises the control device of the air conditioner.
The invention also provides an electronic device, which comprises a processor, a memory and a computer program stored in the memory, wherein the processor is configured to execute the computer program to realize the control method of the air conditioner.
The present invention also provides a computer storage medium having a computer program stored thereon, the computer program, when executed by a processor, implementing the control method of the air conditioner as described above.
Compared with the prior art, the invention has the advantages and positive effects that:
the air conditioner control method and the control device provided by the invention take the current working voltage as a judgment parameter for adaptively adjusting the control strategy of the air conditioner, execute different controls according to the type, the operation mode and the reference parameter of the air conditioner when the working voltage meets the preset voltage condition, reduce the capacity loss under the condition of keeping the working state of the air conditioner as good as possible, prolong the working time of the air conditioner, avoid the shutdown of the air conditioner and keep the air conditioning performance of the air conditioner as much as possible, thereby achieving the technical effects of improving the working reliability, intelligence and use comfort of the air conditioner.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating a control method of an air conditioner according to a first embodiment of the present invention;
FIG. 2 is a flow chart illustrating a control method of an air conditioner according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of a control device of an air conditioner according to the present invention;
fig. 4 is a schematic structural diagram of an embodiment of an electronic device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that the technical solutions in the embodiments of the present invention may be combined with each other, but must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the protection scope of the present invention.
Aiming at the technical problems that the air conditioner is easy to stop and the working reliability and the use comfort of the air conditioner are influenced because the working voltage of the air conditioner is not considered in the control of the air conditioner in the prior art, the invention creatively provides a control strategy for adaptively adjusting the air conditioner according to the working voltage of the air conditioner, and different controls are executed according to the type, the operation mode and the reference parameter of the air conditioner when the working voltage meets the preset voltage condition, so that the technical effects of improving the working reliability, the intelligence and the use comfort of the air conditioner are achieved.
Fig. 1 is a schematic flow chart illustrating a control method of an air conditioner according to a first embodiment of the present invention.
As illustrated in fig. 1, this embodiment performs control of the air conditioner using the following procedure.
Step 101: and acquiring the current working voltage of the air conditioner.
The current working voltage is the real-time working voltage of the air conditioner which is continuously obtained according to the set sampling frequency. Specifically, the detection device and the detection means can be used for detecting the working voltage of the air conditioner in the prior art.
Step 102: and judging whether the current working voltage meets a preset voltage condition or not. If yes, go to step 103; otherwise, go to step 105.
The preset voltage condition is used as a judgment condition for adopting different control strategies for the air conditioner, is a known condition, and can be a fixed condition or a dynamically variable condition. The setting principle of the preset voltage condition is as follows: when the current working voltage meets the preset voltage condition, the problem that the air conditioner is easy to stop exists, and the operation parameter value of the air conditioner needs to be adjusted, so that the air conditioner operates under the operation parameter value, and the problem of stopping the air conditioner is reduced as far as possible.
In some embodiments, the preset voltage condition is: below a preset voltage threshold.
And when the current working voltage is lower than the preset voltage threshold, judging that the current working voltage meets the preset voltage condition.
Step 103: the type and the current operation mode of the air conditioner are obtained, and the current reference parameters are determined according to the current operation mode.
And after the current working voltage is judged to meet the preset voltage condition, the control strategy of the air conditioner is adjusted. Firstly, acquiring the type and the current operation mode of an air conditioner; then, the current reference parameter is determined according to the current operation mode.
The types of the air conditioners comprise a fixed-frequency air conditioner and a variable-frequency air conditioner, and the types of the air conditioners can be obtained according to system parameters of the air conditioners.
The current operation mode is a current operation mode of the air conditioner, comprises a refrigeration mode and a heating mode, and can be obtained according to operation parameters and/or setting parameters of the air conditioner.
The current reference parameters include a current outdoor ambient temperature and a current indoor unit coil temperature. The current outdoor environment temperature is the real-time temperature of the outdoor environment where the outdoor unit of the air conditioner is located, which is continuously acquired according to the set sampling frequency, acquired by a temperature detection device arranged by the outdoor unit, or acquired from a meteorological server and the like through the internet. The current indoor unit coil temperature is the real-time coil temperature of the heat exchanger of the indoor unit of the air conditioner, which is continuously obtained according to the set sampling frequency, and can be obtained by a coil temperature detection device arranged on the heat exchanger.
In some embodiments, determining the current reference parameter based on the current operating mode includes:
when the current operation mode is a refrigeration mode, determining the current reference parameter as the current outdoor environment temperature;
and when the current operation mode is the heating mode, determining the current reference parameter as the current temperature of the coil pipe of the internal machine.
Therefore, different reference parameters are selected under different operation modes, the capacity loss of the air conditioner can be reduced, and the reliability and the comfort of the operation of the air conditioner are improved.
Step 104: and determining the current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter, and controlling the air conditioner to operate according to the current control strategy.
The air conditioner is preset with the matching relation among the type, the operation mode, the reference parameter and the control strategy, and after the type, the current operation mode and the current reference parameter of the air conditioner are determined, the matched control strategy is called as the current control strategy to control the operation of the air conditioner. And more particularly, to an implementation of the matching relationship, see the description of the embodiment of fig. 2.
Step 105: a default control strategy is maintained.
If the current working voltage does not meet the preset voltage condition, the air conditioner keeps the operation of the default control strategy in step 102. The default control strategy is a known conventional control strategy which does not consider the working voltage of the air conditioner, and can be all possible control strategies of the air conditioner in the prior art.
In the embodiment, the current working voltage is used as a judgment parameter for adaptively adjusting the control strategy of the air conditioner, when the working voltage meets the preset voltage condition, different controls are executed according to the type, the running mode and the reference parameter of the air conditioner, the capacity loss is reduced under the condition of keeping the working state of the air conditioner as good as possible, the working time of the air conditioner is prolonged, the air conditioner is prevented from being stopped, and the air conditioning performance of the air conditioner is kept as much as possible, so that the technical effects of improving the working reliability, intelligence and use comfort of the air conditioner are achieved.
Fig. 2 is a flow chart illustrating a control method of an air conditioner according to a second embodiment of the present invention.
As illustrated in fig. 2, this embodiment performs control of the air conditioner using the following procedure.
Step 201: and acquiring the current working voltage of the air conditioner.
Step 202: and judging whether the current working voltage meets a preset voltage condition or not. If yes, go to step 204; otherwise, step 203 is executed.
The specific implementation process, the parameter obtaining manner, the determination of the preset voltage condition, and the like of the two steps are described with reference to the corresponding description of the embodiment in fig. 1.
Step 203: a default control strategy is maintained.
If it is determined in step 202 that the current operating voltage does not satisfy the preset voltage condition, the air conditioner keeps operating the default control strategy. Wherein, the default control strategy is a known conventional control strategy which does not consider the working voltage of the air conditioner, and can be all possible control strategies of the air conditioner in the prior art
Step 204: the type and the current operation mode of the air conditioner are acquired.
After it is determined in step 202 that the current operating voltage meets the preset voltage condition, the control strategy of the air conditioner is adjusted. First, the type and current operation mode of the air conditioner are acquired. Similar to the embodiment of fig. 1, in the embodiment of fig. 2, the types of the air conditioner include a fixed-frequency air conditioner and an inverter air conditioner, and the current operation mode is an operation mode of the air conditioner, which is currently operating, and includes a cooling mode and a heating mode.
Step 205: and judging whether the type of the air conditioner is a fixed-frequency air conditioner or not. If yes, go to step 206 to step 215; otherwise, the process of step 216 to step 225 is executed.
The method can acquire whether the air conditioner is a fixed-frequency air conditioner or a variable-frequency air conditioner according to the system parameters of the air conditioner, and execute different control processes according to the judgment result of the type.
Step 206: and when the type of the air conditioner is judged to be the fixed-frequency air conditioner, executing a fixed-frequency air conditioner control strategy. Specifically, the process from step 207 to step 215 is executed.
Step 207: and judging whether the current operation mode is a refrigeration mode or not. If yes, go to step 208 to step 211; otherwise, the process of step 212 to step 215 is executed.
The method can acquire whether the current operation mode is a cooling mode or a heating mode according to the operation parameters and/or the setting parameters of the air conditioner, and execute different control processes according to different current operation modes.
Step 208: and when the current operation mode is the refrigeration mode, determining the current reference parameter as the current outdoor environment temperature, and acquiring the current outdoor environment temperature.
The meaning and the obtaining mode of the current outdoor environment temperature refer to the corresponding description of the embodiment of fig. 1.
Step 209: and judging whether the current outdoor environment temperature meets a first preset outer ring temperature condition or not. If yes, go to step 210; otherwise, step 211 is executed.
The first preset external environment temperature condition is a judgment condition that different control strategies are adopted for the constant-frequency air conditioner in the operation refrigeration mode, and is a known condition, which can be a fixed condition or a dynamically variable condition.
In some embodiments, the first preset outer loop temperature condition is: not greater than the first preset outer ring temperature threshold.
And when the current outdoor environment temperature is not greater than the first preset outer ring temperature threshold value, judging that the current outdoor environment temperature meets the first preset outer ring temperature condition.
Step 210: and controlling the air conditioner to operate according to the first control strategy.
The first control strategy includes: the rotating speed of the indoor fan is reduced to the lowest allowable rotating speed; and maintaining the rotating speed of the outdoor fan.
That is, when the type of the air conditioner is a fixed-frequency air conditioner, the current operation mode is a refrigeration mode, the current reference parameter is the current outdoor environment temperature, and the current outdoor environment temperature meets the first preset external loop temperature condition, the rotating speed of the indoor fan is controlled to be reduced to the lowest allowable rotating speed so as to reduce the pressure of a refrigeration system of the air conditioner, reduce the working current of the air conditioner and avoid the air conditioner from being easily stopped due to the over-low working voltage; the rotating speed of the indoor fan cannot be lower than the lowest allowable rotating speed so as to keep the stable operation of the system. Meanwhile, the rotating speed of the outdoor fan is kept. It should be understood that the maintaining of the rotation speed of the outdoor fan at this time means that the rotation speed of the outdoor fan is not adjusted according to the working voltage of the air conditioner, but is not fixed, and at this time, the rotation speed of the outdoor fan can still be regulated according to a default control strategy so as to meet the refrigeration requirement of a user for using the air conditioner.
Step 211: and controlling the air conditioner to operate according to the second control strategy.
The second control strategy includes: the rotating speed of the indoor fan is reduced to the lowest allowable rotating speed; the outdoor fan speed is increased to the maximum allowable speed.
That is, when the type of the air conditioner is a fixed-frequency air conditioner, the current operation mode is a refrigeration mode, the current reference parameter is the current outdoor environment temperature, and the current outdoor environment temperature does not meet the first preset external loop temperature condition, the requirement for reducing the system pressure cannot be met only by reducing the rotating speed of the indoor fan to the lowest rotating speed allowed, and meanwhile, the rotating speed of the outdoor fan is also controlled to be increased to the highest rotating speed allowed, so that the pressure of the refrigeration system of the air conditioner is reduced, the working current of the air conditioner is reduced, and the air conditioner is prevented from being easily stopped due to the fact that the working voltage is too low.
Step 212: and if the current operation mode is the non-refrigeration mode, the current operation mode is the heating mode, the current reference parameter is determined to be the current temperature of the coil pipe of the internal machine, and the current temperature of the coil pipe of the internal machine is obtained.
The meaning and the obtaining mode of the temperature of the coil of the internal machine are referred to the corresponding description of the embodiment of the figure 1.
Step 213: and judging whether the current temperature of the coil pipe of the inner machine meets a first preset inner coil temperature condition or not. If yes, go to step 214; otherwise, step 215 is performed.
The first preset internal temperature condition is a judgment condition that different control strategies are adopted for the constant-frequency air conditioner in the heating mode, is a known condition, can be a fixed condition, and can also be a dynamically variable condition.
In some embodiments, the first preset internal disc temperature condition is: not less than the first preset inner disc temperature threshold.
When the current temperature of the coil pipe of the internal machine is not less than the first preset internal coil temperature threshold value, the current temperature of the coil pipe of the internal machine is judged to meet the first preset internal coil temperature condition.
Step 214: and controlling the air conditioner to operate according to a third control strategy.
The third control strategy includes: increasing the rotating speed of the indoor fan; and reducing the rotating speed of the outdoor fan.
When the type of the air conditioner is a fixed-frequency air conditioner, the current operation mode is a heating mode, the current reference parameter is the current inner machine coil temperature, and the current inner machine coil meets a first preset inner machine coil temperature condition, the rotating speed of an indoor fan is controlled to be increased, and the rotating speed of an outdoor fan is controlled to be reduced, so that the pressure of a refrigeration system of the air conditioner is reduced, the working current of the air conditioner is reduced, and the air conditioner is prevented from being easily shut down due to too low working voltage. In some embodiments, the indoor fan speed may be controlled to increase to 1.5 times the default indoor fan speed determined under the default control strategy, and the outdoor fan speed may be controlled to decrease to the lowest allowable speed.
Step 215: and controlling the air conditioner to operate according to a fourth control strategy.
The fourth control strategy includes: maintaining the rotating speed of the indoor fan; and maintaining the rotating speed of the outdoor fan.
When the type of the air conditioner is a fixed-frequency air conditioner, the current operation mode is a heating mode, the current reference parameter is the current temperature of the coil pipe of the indoor unit, and the current coil pipe of the indoor unit does not meet the first preset inner coil temperature condition, the rotating speed of the indoor fan and the rotating speed of the outdoor fan are both kept, the rotating speed of the outdoor fan is not adjusted according to the working voltage of the air conditioner, and the adjustment and the control can still be carried out according to a default control strategy.
Step 216: if it is determined in step 205 that the type of the air conditioner is not the fixed-frequency air conditioner, the type of the air conditioner is the variable-frequency air conditioner, and the control strategy of the variable-frequency air conditioner is executed. Specifically, the process from step 217 to step 225 is performed.
Step 217: and judging whether the current operation mode is a refrigeration mode. If yes, go to step 218 to step 221; otherwise, the process of step 222 to step 225 is executed.
As described above, the current operation mode can be obtained as the cooling mode or the heating mode according to the operation parameters and/or setting parameters of the air conditioner, and different control processes can be executed according to the difference of the current operation mode.
Step 218: and when the current operation mode is the refrigeration mode, determining the current reference parameter as the current outdoor environment temperature, and acquiring the current outdoor environment temperature.
Step 219: and judging whether the current outdoor environment temperature meets a second preset outer ring temperature condition or not. If yes, go to step 220; otherwise, step 221 is performed.
The second preset external environment temperature condition is a judgment condition that different control strategies are adopted for the variable frequency air conditioner in the operation refrigeration mode, and is a known condition, which can be a fixed condition or a dynamically variable condition.
In some embodiments, the second preset outer loop temperature condition is: not greater than a second preset outer ring temperature threshold.
And when the current outdoor environment temperature is not greater than the second preset outer ring temperature threshold value, judging that the current outdoor environment temperature meets the second preset outer ring temperature condition.
Step 220: and controlling the air conditioner to operate according to a fifth control strategy.
The fifth control strategy includes: the rotating speed of the indoor fan is reduced to the lowest allowable rotating speed; the compressor frequency is maintained.
When the type of the air conditioner is a variable frequency air conditioner, the current operation mode is a refrigeration mode, the current reference parameter is the current outdoor environment temperature, and the current outdoor environment temperature meets a second preset outer ring temperature condition, the rotating speed of an indoor fan is controlled to be reduced to the lowest rotating speed allowed, so that the pressure of a refrigeration system of the air conditioner is reduced, the working current of the air conditioner is reduced, and the air conditioner is prevented from being easily stopped due to too low working voltage. Meanwhile, the compressor frequency is maintained to maintain the cooling effect of the air conditioner. It should be understood that the term "compressor frequency maintenance" refers to not adjusting the compressor frequency according to the operating voltage of the air conditioner, but not the compressor frequency is a fixed frequency, and at this time, the compressor frequency may still be adjusted according to a default control strategy to meet the refrigeration requirement of the user using the air conditioner.
Step 221: and controlling the air conditioner to operate according to a sixth control strategy.
The sixth control strategy includes: reducing the rotating speed of the indoor fan; the rotating speed of the outdoor fan is increased to the maximum allowable rotating speed; the exhaust temperature maximum is reduced.
When the type of the air conditioner is a variable frequency air conditioner, the current operation mode is a refrigeration mode, the current reference parameter is the current outdoor environment temperature, and the current outdoor environment temperature does not meet the second preset outer loop temperature condition, the rotating speed of the indoor fan is reduced, the rotating speed of the outdoor fan is controlled to be increased to the allowable maximum rotating speed, so that the pressure of a refrigeration system of the air conditioner is reduced, the working current of the air conditioner is reduced, and the air conditioner is prevented from being easily stopped due to the fact that the working voltage of the air conditioner is too low. Meanwhile, the maximum value of the exhaust temperature is also reduced, so that the air conditioner system can run more safely. In some embodiments, the indoor fan speed may be controlled to be reduced to 0.7 times the default indoor machine speed determined under the default control strategy, reducing the maximum exhaust temperature by 10 ℃.
Step 222: and if the current operation mode is the non-refrigeration mode, the current operation mode is the heating mode, the current reference parameter is determined to be the current temperature of the coil pipe of the internal machine, and the current temperature of the coil pipe of the internal machine is obtained.
The meaning and the obtaining mode of the temperature of the coil of the internal machine are referred to the corresponding description of the embodiment of the figure 1.
Step 223: and judging whether the current temperature of the coil pipe of the inner machine meets a second preset inner coil temperature condition or not. If yes, go to step 224; otherwise, step 225 is performed.
The second preset internal disc temperature condition is a judgment condition that different control strategies are adopted for the variable frequency air conditioner in the heating mode, is a known condition, and can be a fixed condition or a dynamically variable condition.
In some embodiments, the second preset internal disc temperature condition is: not less than the second preset inner disc temperature threshold.
And when the current inner machine coil temperature is not less than the second preset inner coil temperature threshold value, judging that the current inner machine coil temperature meets the second preset inner coil temperature condition.
Step 224: and controlling the air conditioner to operate according to a seventh control strategy.
The seventh control strategy includes: increasing the rotating speed of the indoor fan; reducing the rotating speed of the outdoor fan; the opening degree of the expansion valve is increased.
When the type of the air conditioner is a variable frequency air conditioner, the current operation mode is a heating mode, the current reference parameter is the current inner machine coil temperature, and the current inner machine coil meets the second preset inner machine coil temperature condition, the rotating speed of an indoor fan is controlled to be increased, and the rotating speed of an outdoor fan is controlled to be reduced, so that the pressure of a refrigeration system of the air conditioner is reduced, the working current of the air conditioner is reduced, and the air conditioner is prevented from being shut down easily due to too low working voltage. Meanwhile, the opening degree of the expansion valve is increased so as to improve the heating capacity of the air conditioner and meet the heating requirement of a user for using the air conditioner as far as possible.
Step 225: and controlling the air conditioner to operate according to an eighth control strategy.
The eighth control strategy includes: increasing the rotating speed of the indoor fan; maintaining the rotating speed of the outdoor fan; the opening degree of the expansion valve is increased.
When the type of the air conditioner is a variable frequency air conditioner, the current operation mode is a heating mode, the current reference parameter is the current temperature of the coil pipe of the inner machine, and the current coil pipe of the inner machine does not meet the second preset inner coil temperature condition, the rotating speed of the indoor fan is controlled to be increased, so that the pressure of a refrigeration system of the air conditioner is reduced, the working current of the air conditioner is reduced, and the air conditioner is prevented from being shut down easily due to too low working voltage. Meanwhile, the rotating speed of the outdoor fan is controlled to be kept, and the opening degree of the expansion valve is increased, so that the heating capacity of the air conditioner is improved, and the heating requirement of a user for using the air conditioner is met as far as possible. The maintaining of the rotating speed of the outdoor fan means that the rotating speed of the outdoor fan is not adjusted according to the working voltage of the air conditioner and can still be regulated and controlled according to a default control strategy.
Fig. 3 is a schematic structural diagram of an embodiment of a control device of an air conditioner according to the present invention. The control device of this embodiment includes the structural units, the functions of the structural units, and the relationship between them, as follows:
the control device includes:
a current working voltage obtaining unit 301, configured to obtain a current working voltage of the air conditioner.
A current working voltage determining unit 302, configured to determine whether the current working voltage obtained by the current working voltage obtaining unit 301 meets a preset voltage condition, and output a determination result.
A type obtaining unit 303, configured to obtain a type of the air conditioner at least when the current working voltage judging unit 302 judges that the current working voltage meets the preset voltage condition; the types include fixed frequency air conditioners and variable frequency air conditioners.
A current operation mode obtaining unit 304, configured to obtain a current operation mode of the air conditioner at least when the current operating voltage judging unit 302 judges that the current operating voltage meets the preset voltage condition; the current operation mode includes a cooling mode and a heating mode.
A current reference parameter acquiring unit 305 configured to determine a current reference parameter according to the current operation mode acquired by the current operation mode acquiring unit 304; the reference parameters include the current outdoor ambient temperature and the current indoor unit coil temperature.
A current control strategy determining unit 306, configured to determine a current control strategy of the air conditioner according to the type obtained by the type obtaining unit 303, the current operating mode obtained by the current operating mode obtaining unit 304, and the current reference parameter determined by the current reference parameter obtaining unit 305.
And a control unit 307, configured to control the operation of the air conditioner according to the current control strategy determined by the current control strategy determination unit 306.
The control device with the structure runs corresponding software programs to execute corresponding functions, and controls the air conditioner according to the processes of the embodiments of the air conditioner control method shown in the figures 1 and 2 and other embodiments, so that the technical effects corresponding to the embodiments of the figures 1 and 2 and other embodiments are achieved.
The air conditioner control device of the embodiment is applied to the air conditioner, and the technical effects of improving the working reliability, intelligence and use comfort of the air conditioner can be achieved.
Fig. 4 shows a block diagram of an embodiment of the electronic device of the present invention. The electronic device comprises a processor 41, a memory 42 and a computer program 421 stored in the memory 42, wherein the processor 41 is configured to execute the computer program 421, so as to realize the control methods of the air conditioners in the embodiments of fig. 1 and 2 and other embodiments, and to realize the technical effects of the corresponding embodiments. The electronic device can be a main control board, a controller and the like of the air conditioner.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A control method of an air conditioner, characterized in that the control method comprises:
acquiring the current working voltage of the air conditioner;
when the current working voltage meets a preset voltage condition, executing the following control process:
acquiring the type and the current operation mode of the air conditioner; the types comprise a fixed-frequency air conditioner and a variable-frequency air conditioner, and the current operation mode comprises a cooling mode and a heating mode;
determining a current reference parameter according to the current operation mode; the reference parameters comprise the current outdoor environment temperature and the current indoor unit coil temperature;
and determining the current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter, and controlling the air conditioner to operate according to the current control strategy.
2. The control method of an air conditioner according to claim 1, wherein determining a current reference parameter according to the current operation mode includes:
when the current operation mode is the refrigeration mode, determining the current reference parameter as the current outdoor environment temperature;
and when the current operation mode is the heating mode, determining the current reference parameter as the current temperature of the coil pipe of the internal machine.
3. The method as claimed in claim 2, wherein determining a current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter comprises:
when the type is the fixed-frequency air conditioner, the current operation mode is the refrigeration mode, and the current reference parameter is the current outdoor environment temperature, judging whether the current outdoor environment temperature meets a first preset outer loop temperature condition;
when the current outdoor environment temperature meets the first preset outer ring temperature condition, determining that the current control strategy of the air conditioner comprises: the rotating speed of the indoor fan is reduced to the lowest allowable rotating speed; maintaining the rotating speed of the outdoor fan;
when the current outdoor environment temperature does not meet the first preset outer loop temperature condition, determining the current control strategy of the air conditioner to include: the rotating speed of the indoor fan is reduced to the lowest allowable rotating speed; the outdoor fan speed is increased to the maximum allowable speed.
4. The method as claimed in claim 2, wherein determining a current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter comprises:
when the type is the fixed-frequency air conditioner, the current operation mode is the heating mode, and the current reference parameter is the current inner machine coil temperature, judging whether the current inner machine coil temperature meets a first preset inner coil temperature condition;
when the current inner machine coil temperature meets the first preset inner coil temperature condition, determining the current control strategy of the air conditioner to comprise: increasing the rotating speed of the indoor fan; reducing the rotating speed of the outdoor fan;
when the current inner machine coil temperature does not meet the first preset inner machine coil temperature condition, determining the current control strategy of the air conditioner to comprise: maintaining the rotating speed of the indoor fan; and maintaining the rotating speed of the outdoor fan.
5. The method as claimed in claim 2, wherein determining a current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter comprises:
when the type is the variable frequency air conditioner, the current operation mode is the refrigeration mode, and the current reference parameter is the current outdoor environment temperature, judging whether the current outdoor environment temperature meets a second preset outer loop temperature condition;
when the current outdoor environment temperature meets the second preset outer ring temperature condition, determining the current control strategy of the air conditioner comprises the following steps: the rotating speed of the indoor fan is reduced to the lowest allowable rotating speed; compressor frequency maintenance;
when the current outdoor environment temperature does not meet the second preset outer loop temperature condition, determining that the current control strategy of the air conditioner comprises: reducing the rotating speed of the indoor fan; the rotating speed of the outdoor fan is increased to the maximum allowable rotating speed; the exhaust temperature maximum is reduced.
6. The method as claimed in claim 2, wherein determining a current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter comprises:
when the type is the variable frequency air conditioner, the current operation mode is the heating mode, and the current reference parameter is the current inner machine coil temperature, judging whether the current inner machine coil temperature meets a second preset inner coil temperature condition;
when the current inner machine coil temperature meets the second preset inner machine coil temperature condition, determining the current control strategy of the air conditioner to comprise: increasing the rotating speed of the indoor fan; reducing the rotating speed of the outdoor fan; increasing the opening of the expansion valve;
when the current inner machine coil temperature does not meet the second preset inner machine coil temperature condition, determining the current control strategy of the air conditioner to comprise: increasing the rotating speed of the indoor fan; maintaining the rotating speed of the outdoor fan; the opening degree of the expansion valve is increased.
7. A control device of an air conditioner, characterized by comprising:
the current working voltage acquisition unit is used for acquiring the current working voltage of the air conditioner;
the current working voltage judging unit is used for judging whether the current working voltage meets a preset voltage condition or not and outputting a judgment result;
the type obtaining unit is used for obtaining the type of the air conditioner at least when the current working voltage meets the preset voltage condition; the types comprise a fixed frequency air conditioner and a variable frequency air conditioner;
a current operation mode obtaining unit, configured to obtain a current operation mode of the air conditioner at least when the current operating voltage meets the preset voltage condition; the current operation mode comprises a cooling mode and a heating mode;
a current reference parameter obtaining unit, configured to determine a current reference parameter according to the current operation mode; the reference parameters comprise the current outdoor environment temperature and the current indoor unit coil temperature;
the current control strategy determining unit is used for determining the current control strategy of the air conditioner according to the type, the current operation mode and the current reference parameter;
and the control unit is used for controlling the operation of the air conditioner according to the current control strategy.
8. An air conditioner comprising an indoor unit and an outdoor unit, characterized by further comprising the control device of the air conditioner of claim 7.
9. An electronic device comprising a processor, a memory and a computer program stored on the memory, wherein the processor is configured to execute the computer program to implement the method of controlling an air conditioner as claimed in any one of claims 1 to 6.
10. A computer storage medium having a computer program stored thereon, characterized in that: the computer program, when executed by a processor, implements the control method of the air conditioner of any one of claims 1-6 above.
CN202210334032.XA 2022-03-31 2022-03-31 Air conditioner and control method and control device thereof Pending CN114738955A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116007159A (en) * 2022-12-12 2023-04-25 珠海格力电器股份有限公司 Low-pressure fixed-frequency air conditioner control method and device and air conditioner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116007159A (en) * 2022-12-12 2023-04-25 珠海格力电器股份有限公司 Low-pressure fixed-frequency air conditioner control method and device and air conditioner

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