CN117553422A - Air conditioner control method and device, air conditioner and storage medium - Google Patents
Air conditioner control method and device, air conditioner and storage medium Download PDFInfo
- Publication number
- CN117553422A CN117553422A CN202311715535.2A CN202311715535A CN117553422A CN 117553422 A CN117553422 A CN 117553422A CN 202311715535 A CN202311715535 A CN 202311715535A CN 117553422 A CN117553422 A CN 117553422A
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- rotating speed
- outdoor
- frosting
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000001704 evaporation Methods 0.000 claims abstract description 67
- 230000008020 evaporation Effects 0.000 claims abstract description 57
- 238000010257 thawing Methods 0.000 claims description 64
- 238000004590 computer program Methods 0.000 claims description 11
- 230000007613 environmental effect Effects 0.000 claims description 10
- 238000005057 refrigeration Methods 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 description 47
- 238000010438 heat treatment Methods 0.000 description 27
- 230000000694 effects Effects 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000003507 refrigerant Substances 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- F24F11/89—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
- 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
- F24F11/41—Defrosting; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
-
- 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
- F24F2110/12—Temperature 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
- F24F2110/22—Humidity of the outside air
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control method and device of an air conditioner, the air conditioner and a storage medium, and the method and device are used for acquiring the outdoor environment temperature of the air conditioner and the evaporation pressure of an outdoor heat exchanger; if the outdoor environment temperature and the evaporation pressure meet frosting conditions, increasing the rotating speed of an outdoor fan of the air conditioner; and if the rotating speed of the outdoor fan reaches the maximum rotating speed, controlling the rotating speed of the indoor fan of the air conditioner and the frequency of the compressor of the air conditioner so as to reduce the frosting probability of the outdoor heat exchanger. The invention can effectively prevent frosting and improve the comfort of the air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to a control method and device of an air conditioner, the air conditioner and a storage medium.
Background
In the actual heating process of the air conditioner, outdoor side temperature fluctuation easily causes frosting of the outdoor heat exchanger, and indoor heating capacity can be influenced after frosting. In the related art, after detecting that the outdoor heat exchanger frosts, defrosting is performed by means of switching the four-way valve and the like, so that frequent frosting and frequent defrosting can cause frequent fluctuation of indoor temperature, and the comfort of the air conditioner is affected.
Disclosure of Invention
The embodiment of the invention provides a control method and device of an air conditioner, the air conditioner and a storage medium, and aims to effectively prevent frosting and improve the comfort of the air conditioner.
In a first aspect, an embodiment of the present invention provides a control method of an air conditioner, where the control method of the air conditioner includes:
acquiring the outdoor environment temperature of the air conditioner and the evaporation pressure of an outdoor heat exchanger;
if the outdoor environment temperature and the evaporation pressure meet frosting conditions, increasing the rotating speed of an outdoor fan of the air conditioner;
and if the rotating speed of the outdoor fan reaches the maximum rotating speed, controlling the rotating speed of the indoor fan of the air conditioner and the frequency of the compressor of the air conditioner so as to reduce the frosting probability of the outdoor heat exchanger.
Optionally, the controlling the indoor fan rotation speed of the air conditioner and the compressor frequency of the air conditioner includes:
acquiring a first defrosting influence factor of the indoor fan and a second defrosting influence factor of the compressor;
if the first defrosting influence factor is larger than the second defrosting influence factor, controlling the rotating speed of the indoor fan until the rotating speed of the indoor fan reaches an adjustment threshold value, and controlling the frequency of the compressor;
And if the first defrosting influence factor is smaller than the second defrosting influence factor, controlling the frequency of the compressor until the frequency of the compressor reaches an adjustment threshold value, and controlling the rotating speed of the indoor fan.
Optionally, the controlling the indoor fan rotation speed of the air conditioner and the compressor frequency of the air conditioner includes:
acquiring the surface temperature of an indoor heat exchanger of the air conditioner;
if the surface temperature is greater than a preset frequency limiting temperature, controlling the frequency of the compressor;
and if the surface temperature is less than or equal to the preset frequency limiting temperature, controlling the rotating speed of the indoor fan, and controlling the frequency of the compressor until the rotating speed of the indoor fan reaches an adjustment threshold value.
Optionally, the increasing the rotation speed of the outdoor fan of the air conditioner includes:
acquiring the rotating speed of the outdoor fan and the ambient humidity of the outdoor heat exchanger;
determining a rotating speed change value of the rotating speed of the outdoor fan according to the environmental humidity, the rotating speed of the outdoor fan and a preset comparison relation;
and increasing the rotating speed of the outdoor fan of the air conditioner according to the rotating speed change value.
Optionally, the step of increasing the rotation speed of the outdoor fan of the air conditioner includes:
Acquiring the rotating speed of the outdoor fan;
determining a plurality of adjustment time points and rotation speed change values corresponding to the adjustment time points according to the difference between the rotation speed of the outdoor fan and the maximum rotation speed;
and if the adjustment time point is reached, increasing the rotation speed of the outdoor fan of the air conditioner according to the rotation speed change value.
Optionally, after the controlling the indoor fan rotation speed of the air conditioner and the compressor frequency of the air conditioner, the method further includes:
if the rotating speed of the indoor fan and the frequency of the compressor reach the adjustment threshold, acquiring a surface image of the outdoor heat exchanger;
identifying the surface image based on a frosting identification model to obtain a frosting identification result of the outdoor heat exchanger;
and controlling the air conditioner to be switched into a refrigeration mode for defrosting according to the frosting identification result, and setting the rotating speed of the outdoor fan, the rotating speed of the indoor fan and the frequency of the compressor as initial values after the defrosting is successful.
Optionally, after the acquiring the outdoor environment temperature of the air conditioner and the evaporating pressure of the outdoor heat exchanger, the method further includes:
if the outdoor environment temperature is less than or equal to a preset frosting temperature, when the evaporation pressure is detected to be lower than the preset frosting pressure, acquiring the duration time of the evaporation pressure lower than the preset frosting pressure;
And if the duration reaches the preset duration, meeting the frosting condition.
In a second aspect, an embodiment of the present invention provides a control device for an air conditioner, including:
the acquisition module is used for acquiring the outdoor environment temperature of the air conditioner and the evaporation pressure of the outdoor heat exchanger;
the first control module is used for increasing the rotating speed of an outdoor fan of the air conditioner if the outdoor environment temperature and the evaporation pressure meet frosting conditions;
and the second control module is used for controlling the indoor fan rotating speed of the air conditioner and the compressor frequency of the air conditioner if the outdoor fan rotating speed reaches the maximum rotating speed so as to reduce the frosting probability of the outdoor heat exchanger.
In a third aspect, an embodiment of the present invention further provides an air conditioner, including a memory storing a plurality of instructions; the processor loads instructions from the memory to execute the steps of any control method of the air conditioner provided by the embodiment of the invention.
In a fourth aspect, an embodiment of the present invention further provides a computer readable storage medium, where a plurality of instructions are stored, where the instructions are adapted to be loaded by a processor, so as to execute the steps of any one of the control methods of an air conditioner provided by the embodiment of the present invention.
The invention obtains the outdoor environment temperature of the air conditioner and the evaporation pressure of the outdoor heat exchanger; if the outdoor environment temperature and the evaporation pressure meet frosting conditions, increasing the rotating speed of an outdoor fan of the air conditioner; and if the rotating speed of the outdoor fan reaches the maximum rotating speed, controlling the rotating speed of the indoor fan of the air conditioner and the frequency of the compressor of the air conditioner so as to reduce the frosting probability of the outdoor heat exchanger. According to the invention, based on the outdoor environment temperature and the evaporation pressure of the outdoor heat exchanger, the frosting condition of the outdoor heat exchanger is judged in advance, and the frosting of outdoor ventilation is prevented by increasing the rotation speed of the outdoor fan of the air conditioner, after the rotation speed of the outdoor fan is increased, the stability of water vapor on the surface of the fins is reduced, more water vapor is taken away by high-speed air flow, further frosting is avoided, the turbulence intensity of the air flow flowing through the outdoor heat exchanger is increased, the heat exchange effect is enhanced, and the heat exchange coefficient of the air side is increased, so that the temperature of the air at the outlet of the indoor heat exchanger is increased, and the indoor comfort is improved. If the rotation speed of the outdoor fan reaches the maximum rotation speed, the control can be performed to further reduce the frosting probability by controlling the rotation speed of the indoor fan and the frequency of the compressor of the air conditioner, so that the evaporation pressure, the rotation speed of the outdoor fan, the rotation speed of the indoor fan and the frequency of the compressor are combined to reduce the frosting probability of the outdoor heat exchanger of the air conditioner, frequent frosting and frosting can be avoided, the heating effect is improved, and the comfort of the air conditioner is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of an embodiment of a control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of another embodiment of a control method of an air conditioner according to the present invention;
fig. 3 is a schematic flow chart of a further embodiment of a control method of an air conditioner according to the embodiment of the present invention;
FIG. 4 is a graph of experimental data provided in an embodiment of the present invention;
fig. 5 is a schematic flowchart of an application scenario provided in an embodiment of the present invention;
fig. 6 is a schematic structural view of a control device of an air conditioner provided in an embodiment of the present invention;
fig. 7 is a schematic structural view of an air conditioner provided in an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention. Meanwhile, in the description of the embodiments of the present invention, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless explicitly defined otherwise.
The embodiment of the invention provides a control method and device of an air conditioner, the air conditioner and a computer readable storage medium.
Specifically, the present embodiment will be described from the perspective of a control device of an air conditioner, which may be integrated in an air conditioner in particular, that is, the control method of an air conditioner of the embodiment of the present invention may be performed by the air conditioner.
The following describes in detail the embodiments with reference to the accompanying drawings, in which the execution subject is an air conditioner. The following description of the embodiments is not intended to limit the preferred embodiments. Although a logical order is depicted in the flowchart, in some cases the steps shown or described may be performed in an order different than depicted in the figures.
According to the background technical description of the invention, in the related art, after the outdoor heat exchanger is detected to be frosted, the four-way valve is switched to perform defrosting, so that frequent frosting and frequent defrosting can cause frequent fluctuation of indoor temperature, and the comfort of the air conditioner is affected.
In order to solve the above problems, the present invention discloses a control method of an air conditioner, referring to fig. 1, the specific flow of the control method of the air conditioner may be as follows steps S10 to S40, wherein:
Step S10, acquiring the outdoor environment temperature of the air conditioner and the evaporation pressure of an outdoor heat exchanger;
in this embodiment, the main body performing the air conditioner control method may be an air conditioner, and the air conditioner often operates a heating mode when the outdoor ambient temperature is low in autumn, winter, or the like, to increase the indoor ambient temperature. And when the outdoor environment temperature is low, frosting is easy to occur in the outdoor heat exchanger, and when the heating mode is operated, the refrigerant in the outdoor heat exchanger needs to absorb heat and evaporate, so that the outdoor heat exchanger is lower in temperature, frosting is easy to occur, and the refrigerating effect of the air conditioner is reduced after frosting.
In this embodiment, when the air conditioner is in the cooling mode, the outdoor ambient temperature of the air conditioner is obtained, and the outdoor ambient temperature directly affects the frost formation difficulty of the outdoor heat exchanger. When the evaporation pressure is higher, the flow speed of the surface refrigerant is faster, the temperature of the outdoor heat exchanger is increased, whereas when the evaporation pressure is lower, the flow speed of the surface refrigerant is slower, the temperature of the outdoor heat exchanger is reduced, and frosting is easy to occur to the outdoor heat exchanger.
Step S20, if the outdoor environment temperature and the evaporation pressure meet frosting conditions, increasing the rotating speed of an outdoor fan of the air conditioner;
in the present embodiment, whether the outdoor heat exchanger satisfies the frosting condition is judged by the outdoor ambient temperature and the evaporation pressure, and when the frosting condition is satisfied, the outdoor heat exchanger may gradually generate frosting. One of the frosting conditions is that the outdoor environment temperature is used as a basis for frosting of the outdoor heat exchanger when the outdoor environment temperature is high, if the outdoor environment temperature is high, frosting of the outdoor heat exchanger cannot occur, the evaporation pressure is a cause for influencing the temperature of the outdoor heat exchanger, if the evaporation pressure of the outdoor heat exchanger is low, the temperature of the outdoor heat exchanger can be gradually reduced until frosting occurs, whether frosting occurs to the outdoor heat exchanger can be judged in advance through the evaporation pressure, and therefore the outdoor fan rotating speed of the air conditioner can be increased in advance to prevent frosting.
By increasing the rotation speed of the outdoor fan of the air conditioner, frost formation of the outdoor heat exchanger can be prevented, referring to fig. 4, as can be seen from data items 1 and 2, the higher the rotation speed of the outdoor fan is, the higher the evaporation pressure of the outdoor heat exchanger is, the more frost formation of the outdoor heat exchanger cannot occur, and the reason for analyzing the frost failure is that after the outdoor ambient temperature and the evaporation pressure meet the frost formation conditions, the outdoor heat exchanger is judged to be frosted gradually with high probability, and then the rotation speed of the outdoor fan of the air conditioner is increased before actual frosting, so that the turbulence intensity of air flow flowing through the outdoor heat exchanger is increased, the stability of water vapor staying on the surfaces of fins is reduced, and more water vapor can be taken away by high-speed air flow, so that frosting can be avoided. The turbulence intensity of the air flow flowing through the outdoor heat exchanger is increased, so that the heat exchange effect of the outdoor heat exchanger is enhanced, the heat exchange coefficient of the wind side is increased, the outlet temperature of the heat exchanger is increased, the average temperature of the wall surfaces of the outdoor heat exchanger fins, copper pipes and the like is also increased, the temperature of the outdoor heat exchanger can be increased, the evaporation pressure is increased along with the increase, and frosting is prevented better. The heat exchange effect of the outdoor heat exchanger is enhanced, the heating effect can be improved, the indoor temperature is improved, and the comfort of the air conditioner is improved.
And step S30, if the rotating speed of the outdoor fan reaches the maximum rotating speed, controlling the rotating speed of the indoor fan of the air conditioner and the frequency of the compressor of the air conditioner so as to reduce the frosting probability of the outdoor heat exchanger.
In the present embodiment, since the increase of the outdoor fan rotation speed can prevent frosting and also improve the comfort of the air conditioner, the increase of the outdoor fan rotation speed of the air conditioner is preferentially taken as an operation of preferentially preventing frosting. If the rotation speed of the outdoor fan reaches the adjustable maximum rotation speed, but the outdoor environment temperature and the evaporation pressure still meet the frosting condition, the frosting probability of the outdoor heat exchanger can be reduced by controlling the rotation speed of the indoor fan of the air conditioner and the frequency of the compressor of the air conditioner. Alternatively, the frosting probability of the outdoor heat exchanger may be reduced by reducing the indoor fan speed of the air conditioner and/or reducing the compressor frequency of the air conditioner.
Referring to fig. 4, it can be seen from data items 2, 3, and 5 that the higher the evaporation pressure of the outdoor heat exchanger, the less frosting the outdoor heat exchanger occurs after the rotation speed of the indoor fan is reduced. The reason for this is that the refrigerant discharged from the compressor to the indoor heat exchanger is in a high-temperature high-pressure gaseous state, and the temperature thereof is generally 30 ℃ or more higher than the indoor ambient temperature. When the rotating speed of the indoor fan is reduced, the air quantity is reduced, the inner side heat exchange effect is poor, the temperature of the refrigerant flowing into the outdoor heat exchanger from the indoor heat exchanger is increased, so that the condensing pressure of the indoor heat exchanger is increased, the flow speed of the refrigerant is increased, the inlet temperature of the outdoor heat exchanger is also increased, the average wall temperature and the evaporating pressure of the outdoor heat exchanger are increased, and frosting can be effectively prevented.
From data items 5, 6, and 7, it can be seen that the higher the evaporating pressure of the outdoor heat exchanger, the less frosting the outdoor heat exchanger will occur after the compressor frequency is reduced. The heat absorption effect of the outdoor heat exchanger is matched with the heat load provided by the environment working condition, so that the temperature and the evaporation pressure of the outdoor heat exchanger are increased, and frosting is effectively prevented.
It should be noted that, in this embodiment, the rotation speed of the outdoor fan of the air conditioner is preferentially increased, because after the rotation speed of the outdoor fan is increased, the heating effect of the air conditioner is improved, and a good frost prevention effect can be achieved, so that the embodiment preferentially increases the rotation speed of the outdoor fan of the air conditioner, reduces the rotation speed of the indoor fan and/or reduces the compressor frequency of the air conditioner, and has the beneficial effects of increasing the rotation speed of the outdoor fan of the air conditioner to the indoor temperature, and only after the rotation speed of the outdoor fan reaches the maximum rotation speed, the rotation speed of the indoor fan is reduced and/or the compressor frequency of the air conditioner is reduced.
In the technical scheme disclosed in the embodiment, the outdoor environment temperature of the air conditioner and the evaporation pressure of the outdoor heat exchanger are obtained; if the outdoor environment temperature and the evaporation pressure meet frosting conditions, increasing the rotating speed of an outdoor fan of the air conditioner; and if the rotating speed of the outdoor fan reaches the maximum rotating speed, controlling the rotating speed of the indoor fan of the air conditioner and the frequency of the compressor of the air conditioner so as to reduce the frosting probability of the outdoor heat exchanger. According to the invention, based on the outdoor environment temperature and the evaporation pressure of the outdoor heat exchanger, the frosting condition of the outdoor heat exchanger is judged in advance, and the frosting of outdoor ventilation is prevented by increasing the rotation speed of the outdoor fan of the air conditioner, after the rotation speed of the outdoor fan is increased, the stability of water vapor on the surface of the fins is reduced, more water vapor is taken away by high-speed air flow, further frosting is avoided, the turbulence intensity of the air flow flowing through the outdoor heat exchanger is increased, the heat exchange effect is enhanced, and the heat exchange coefficient of the air side is increased, so that the temperature of the air at the outlet of the indoor heat exchanger is increased, and the indoor comfort is improved. If the rotation speed of the outdoor fan reaches the maximum rotation speed, the frosting probability can be further reduced by controlling the rotation speed of the indoor fan of the air conditioner and the frequency of the compressor, and after the rotation speed of the indoor fan is increased, the heat stored in the room can be increased, heat loss possibly caused by the rotation speed of the indoor fan of the air conditioner and the frequency of the compressor of the air conditioner is regulated for subsequent bedding, so that the rotation speed of the indoor fan of the air conditioner is reduced and/or the frequency of the compressor of the air conditioner is reduced, and the indoor temperature cannot be greatly fluctuated. Therefore, the evaporation pressure, the rotation speed of the outdoor fan, the rotation speed of the indoor fan and the frequency of the compressor are combined to reduce the frosting probability of the outdoor heat exchanger of the air conditioner, frequent frosting and frosting can be avoided, the heating effect is improved, and the comfort of the air conditioner is improved.
Further, after step S10, the method further includes:
if the outdoor environment temperature is less than or equal to a preset frosting temperature, when the evaporation pressure is detected to be lower than the preset frosting pressure, acquiring the duration time of the evaporation pressure lower than the preset frosting pressure;
and if the duration reaches the preset duration, meeting the frosting condition.
In the present embodiment, the air conditioner may be gradually performed based on the outdoor ambient temperature and the evaporation pressure of the outdoor heat exchanger satisfying the frosting condition. After the outdoor environment temperature is obtained, the magnitude relation between the outdoor environment temperature and the preset frosting temperature is detected, the preset frosting temperature can be set to be 4 ℃ generally, when the outdoor environment temperature is higher than the preset frosting temperature, enough heat can be given to the outdoor heat exchanger, the outdoor heat exchanger is difficult to frost, and when the outdoor environment temperature is lower than the preset frosting temperature, the outdoor environment is insufficient and the indoor heat exchanger is easy to frost. And if the outdoor environment temperature is less than or equal to the preset frosting temperature, acquiring the evaporating pressure of the outdoor heat exchanger, judging a comparison result between the evaporating pressure and the preset threshold value, starting timing when the evaporating pressure is detected to be lower than the preset frosting pressure, obtaining the duration time when the evaporating pressure is lower than the preset frosting pressure, and stopping timing if the evaporating pressure is higher than the preset frosting pressure. If the recorded duration reaches the preset duration, the evaporating pressure of the outdoor heat exchanger is considered to be low for a long time, and then the outdoor heat exchanger may be frosted. The outdoor fan rotating speed of the air conditioner is increased to prevent frosting, the duration time is reset to zero after the outdoor fan rotating speed of the air conditioner is increased, and the duration time that the evaporation pressure is lower than the preset evaporation pressure after the outdoor environment temperature is detected to be lower than the preset frosting temperature is obtained again.
It should be noted that, referring to fig. 4, when the frosting data is compared with the non-frosting data, it is found that frosting is likely to occur at a low pressure of 0.65MPa, and thus, in this embodiment, the preset frosting pressure may be set to 0.65MPa.
Therefore, the outdoor environment temperature, the evaporation pressure of the outdoor heat exchanger and the duration time when the evaporation pressure is lower than the preset frosting pressure are combined, whether the outdoor heat exchanger is about to frost or not can be judged accurately in advance, so that the rotating speed of an outdoor fan of the air conditioner can be increased in accurate time, the indoor heating effect is improved, the frosting of the outdoor heat exchanger is prevented, and the comfort of the air conditioner can be improved.
Further, step S20 further includes:
acquiring the rotating speed of an outdoor fan and the ambient humidity of the outdoor heat exchanger;
determining a rotating speed change value of the rotating speed of the outdoor fan according to the environmental humidity, the rotating speed of the outdoor fan and a preset comparison relation;
and increasing the rotating speed of the outdoor fan of the air conditioner according to the rotating speed change value.
In this embodiment, one of the reasons why increasing the rotational speed of the outdoor fan can prevent frosting is to reduce the stability of the vapor on the surface of the outdoor heat exchanger, and the high-speed airflow takes away a large amount of vapor on the surface of the outdoor heat exchanger. And further, the increase of the rotation speed of the outdoor fan can be more finely determined according to the humidity of the outdoor environment. And when the outdoor environment temperature and the evaporation pressure meet frosting conditions and the rotating speed of the outdoor fan does not reach the maximum rotating speed, acquiring the current rotating speed of the outdoor fan and the environment humidity of the current outdoor heat exchanger. Checking the size of the environmental humidity of the outdoor heat exchanger under the current rotation speed of the outdoor fan, if the rotation speed of the outdoor fan is smaller, the environmental humidity is higher, the adjustable space of the rotation speed of the outdoor fan is larger, the reducible space for reducing the environmental humidity by increasing the rotation speed of the outdoor fan is larger, a larger rotation speed change value can be set, if the rotation speed of the outdoor fan is smaller, the environmental humidity is lower, the adjustable space of the rotation speed of the outdoor fan is larger, but the reducible space for reducing the environmental humidity by increasing the rotation speed of the outdoor fan is smaller, and a smaller rotation speed change value can be set. If the outdoor fan rotating speed is bigger, and the ambient humidity is still higher, the outdoor fan rotating speed is close to the maximum rotating speed although the outdoor ambient humidity can be reduced, the adjustable space is smaller, a smaller rotating speed change value can be set, if the outdoor fan rotating speed is bigger, and the outdoor ambient humidity is lower, the outdoor fan rotating speed is close to the maximum rotating speed, the adjustable space is smaller, the outdoor ambient humidity can be reduced, and a smaller rotating speed change value can be set. The preset comparison between the ambient humidity of the heat exchanger and the rotational speed of the outdoor fan and the rotational speed variation value can be set based on the above reasons or other requirements. Based on a preset comparison relation, the method can determine that the rotating speed of the outdoor fan and the rotating speed change value corresponding to the ambient temperature of the outdoor heat exchanger when the frosting condition is met and the rotating speed of the outdoor fan has an adjustable space, and increase the rotating speed of the outdoor fan of the air conditioner by the rotating speed change value so as to reduce the stability of water vapor on the surface of the outdoor heat exchanger and blow away most of the water vapor. When the environmental humidity and the rotating speed of the outdoor fan are used for accurately determining the rotating speed change value of the rotating speed of the outdoor fan and then selecting a proper conversion change value to increase the rotating speed of the outdoor fan when the frosting condition is met, the energy consumption of an air conditioner can be saved, the frosting prevention time can be prolonged when the frosting prevention requirement is met, and the indoor comfort state is kept for a longer time.
Further, step S20 includes:
acquiring the rotating speed of the outdoor fan;
determining a plurality of adjustment time points and rotation speed change values corresponding to the adjustment time points according to the difference between the rotation speed of the outdoor fan and the maximum rotation speed;
and if the adjustment time point is reached, increasing the rotation speed of the outdoor fan of the air conditioner according to the rotation speed change value.
In this embodiment. And acquiring the rotating speed of the outdoor fan of the air conditioner when the frosting condition is confirmed to be met and the rotating speed of the outdoor fan does not reach the maximum rotating speed, namely the current rotating speed of the outdoor fan. And calculating a difference value between the rotating speed of the outdoor fan and the maximum rotating speed of the outdoor fan, wherein the difference value is an increasable rotating speed of the outdoor fan if the air conditioner always meets the frosting condition. The method comprises the steps of determining a plurality of adjustment time points meeting frosting conditions according to the difference value or preset information, increasing the rotation speed of the space outdoor fan at each adjustment time point, and determining a rotation speed change value corresponding to each adjustment time point according to the difference value between the current rotation speed of the outdoor fan and the maximum rotation speed. The rotation speed change values corresponding to different adjustment time points can be the same, the rotation speed change value can be determined according to the time interval between the adjustment time point and the next adjustment time point, and the rotation speed change value can be gradually increased or decreased according to the time sequence of the adjustment time point. Optionally, the later the timing of the adjustment time point, the larger the corresponding rotation speed variation value may be, because the longer the time is, the longer the time of meeting the frosting condition is, the more serious the frosting trend is, and the larger rotation speed variation value is selected, which is helpful for preventing frosting in the later period of speed regulation. If the air conditioner fan reaches any adjusting time point, the rotating speed of the air conditioner fan is increased by the rotating speed change value corresponding to the adjusting time point.
After the frosting condition is met, the step of increasing the rotation speed of the outdoor fan of the air conditioner may be performed once or multiple times, and the rotation speed of the outdoor fan is not required to be controlled to be increased to the maximum rotation speed once during the execution, for example, the rotation speed of the outdoor fan is increased by one gear, when the frosting condition is met again next time, the rotation speed of the outdoor fan is increased by one gear again, and the maximum rotation speed is targeted during the execution multiple times, and a plurality of adjustment time points are divided to increase the rotation speed of the outdoor fan.
After the frosting condition is met, a plurality of adjusting time points are determined in a planned mode, the rotating speed of the outdoor fan is gradually increased, and if the frosting condition is always met, the maximum value of the rotating speed of the outdoor fan can be adjusted. Therefore, the outdoor heat exchanger can be planned and prevented from frosting more timely, and the comfort of the air conditioner can be improved.
Optionally, referring to fig. 2, in another embodiment of the control method of an air conditioner according to the present invention, after the steps, the method further includes:
step S31, acquiring a first defrosting influence factor of the indoor fan and a second defrosting influence factor of the compressor;
in this embodiment, a first defrosting influence factor corresponding to the rotation speed of the indoor fan and a second defrosting influence factor corresponding to the frequency of the compressor of the air conditioner are obtained. The defrosting influence factor refers to a parameter capable of characterizing the degree of influence on the defrosting effect of the air conditioner when a single operation parameter is adjusted.
And step S32, if the first defrosting influence factor is larger than the second defrosting influence factor, controlling the rotating speed of the indoor fan until the rotating speed of the indoor fan reaches an adjustment threshold value, and controlling the frequency of the compressor.
And step S33, if the first defrosting influence factor is smaller than the second defrosting influence factor, controlling the frequency of the compressor until the frequency of the compressor reaches an adjustment threshold value, and controlling the rotating speed of the indoor fan.
In this embodiment, the rotation speed of the indoor fan and the frequency of the compressor may be adjusted gradually, so that the time for reducing the frost formation probability of the outdoor heat exchanger may be delayed, and the priority for controlling the rotation speed of the indoor fan may be determined according to the first defrosting influence factor and the second defrosting influence factor. If the first defrosting influence factor is larger than the second defrosting influence factor, the defrosting effect of adjusting the rotating speed of the indoor fan is better than that of adjusting the frequency of the compressor, the rotating speed of the indoor fan is controlled preferentially, and the frequency of the compressor is controlled until the rotating speed of the indoor fan reaches an adjusting threshold value. If the first defrosting influence factor is smaller than the second defrosting influence factor, the defrosting effect of adjusting the rotating speed of the indoor fan is inferior to the defrosting effect of adjusting the frequency of the compressor, the frequency of the compressor is controlled preferentially, and the rotating speed of the indoor fan is controlled again until the frequency of the compressor reaches an adjusting threshold value.
Alternatively, a first heating influence factor of the indoor fan and a second heating influence factor of the compressor may also be obtained. If the first heating influence factor is larger than the second heating influence factor, the heating effect of adjusting the rotating speed of the indoor fan is better than that of adjusting the frequency of the compressor, the indoor comfort is improved, the rotating speed of the indoor fan is controlled preferentially, and the frequency of the compressor is controlled until the rotating speed of the indoor fan reaches an adjusting threshold value. If the first heating influence factor is smaller than the second heating influence factor, the heating effect of adjusting the rotating speed of the indoor fan is inferior to the heating effect of adjusting the frequency of the compressor, the frequency of the compressor is controlled preferentially, and the rotating speed of the indoor fan is controlled again until the frequency of the compressor reaches an adjusting threshold.
Further, a first defrosting influence factor corresponding to the rotating speed of the indoor fan, a second defrosting influence factor corresponding to the frequency of the compressor of the air conditioner, a first heating influence factor corresponding to the rotating speed of the indoor fan and a second heating influence factor corresponding to the frequency of the compressor of the air conditioner can be obtained. The heating influence factor refers to a parameter capable of representing the influence degree of the comfort of the air conditioner when a single operation parameter is adjusted, and the heating influence factor and the defrosting influence factor can be determined in advance through experiments or theoretical deductions. Different operating parameters, such as the outdoor fan speed, indoor fan speed and compressor frequency, are typically different.
Due to different operation requirements, different weight values can be set for the heating influence factor and the defrosting influence factor. Respectively carrying out weighted summation on a first heating influence factor and a first defrosting influence factor of the rotating speed of the indoor fan by utilizing the preset weight value, carrying out weighted summation on the heating influence factor and the defrosting influence factor corresponding to the compressor frequency, sequencing according to the weighted summation result to obtain a first adjustment priority corresponding to the rotating speed of the indoor fan and a second adjustment priority corresponding to the compressor frequency, and controlling the rotating speed of the indoor fan until the rotating speed of the indoor fan reaches an adjustment threshold value if the first adjustment priority is larger than the second adjustment priority; and if the first adjustment priority is smaller than the second adjustment priority, controlling the frequency of the compressor until the frequency of the compressor reaches an adjustment threshold value, and controlling the rotating speed of the indoor fan.
In the technical scheme disclosed in this embodiment, the adjustment priority of the indoor fan speed and the compressor frequency is determined by the defrosting influence factors corresponding to the indoor fan speed and the compressor frequency, and after the target operation in the adjustment priority is adjusted to the threshold value according to the adjustment priority, the new target operation is adjusted, and the frosting probability can be reduced when the indoor fan speed and the compressor frequency are controlled once, for example, the indoor fan speed is reduced once or the compressor frequency is reduced once, so that the frosting probability can be reduced, the frosting time can be prolonged, the frosting time can be effectively prolonged, and the situation that frosting cannot be prevented because all operation parameters reach the adjustment threshold value in advance is avoided.
Optionally, referring to fig. 3, based on any one of the above embodiments, in a further embodiment of the control method of an air conditioner of the present invention, the step S30 includes:
step S34, obtaining the surface temperature of an indoor heat exchanger of the air conditioner;
in this embodiment, the surface temperature of the indoor heat exchanger of the air conditioner is obtained, and the surface temperature of the indoor heat exchanger of the air conditioner is not too high, otherwise, the reliability of the air conditioner is affected, and the air conditioner is stopped or fails.
Step S35, if the surface temperature is greater than a preset frequency limiting temperature, controlling the frequency of the compressor;
in this embodiment, the surface temperature of the indoor heat exchanger is compared with a preset frequency limit temperature, which is related to the compressor and may be set according to the air conditioner or the compressor model. When the compressor exhausts to the indoor heat exchanger, the indoor fan needs to have enough rotating speed to enable the high-temperature and high-pressure refrigerant to dissipate heat, if the surface temperature of the indoor heat exchanger is higher than the frequency limiting temperature, the rotating speed of the indoor fan cannot be reduced to affect the heat dissipation capacity of the indoor unit, so that when the rotating speed of the outdoor fan reaches the maximum rotating speed, and the surface temperature of the indoor heat exchanger is higher than the preset frequency limiting temperature, the frequency of the compressor is controlled, the frequency of the compressor of the air conditioner is reduced, and the frequency of the compressor of the air conditioner is reduced, so that the exhaust temperature of the air conditioner is reduced, and the reliability of the air conditioner is improved.
And step S36, if the surface temperature is smaller than or equal to a preset frequency limiting temperature, controlling the rotating speed of the indoor fan, and controlling the frequency of the compressor until the rotating speed of the indoor fan reaches an adjustment threshold value.
In this embodiment, if the surface temperature of the indoor heat exchanger is less than or equal to the preset frequency limiting temperature, the operation of the air conditioner is relatively stable, the reliability is guaranteed, the rotation speed of the indoor fan of the air conditioner can be controlled, the rotation speed of the indoor fan of the air conditioner is reduced to prevent frosting, and compared with the reduction of the frequency of the compressor, the reduction of the rotation speed of the indoor fan of the air conditioner can further guarantee the heating effect, after the rotation speed of the indoor fan reaches the adjustment threshold value, the frequency of the compressor is controlled, and the frequency of the compressor of the air conditioner is reduced.
For a better understanding, some specific application scenarios are provided below:
referring to fig. 5, after the air conditioner is operated to heat, an outdoor ambient temperature is obtained, if the outdoor ambient temperature is <4 ℃, an evaporation pressure of the outdoor heat exchanger is obtained, if the outdoor heat exchanger evaporation pressure is < 0.65MPa for 3min, a frosting condition is determined to be satisfied, an outdoor fan speed is increased by one gear, if the outdoor heat exchanger evaporation pressure is < 0.65MPa for 3min under the condition that the outdoor ambient temperature is <4 ℃, the outdoor fan speed is increased by one gear again until the outdoor fan speed reaches a maximum speed.
The outdoor fan speed reaches the maximum speed, but still in the case that the outdoor environment temperature is less than 4 ℃ and the evaporation pressure of the outdoor heat exchanger is less than 0.65MPa detected for 3min, the indoor fan speed of the air conditioner or the compressor frequency of the air conditioner can be reduced. And acquiring the surface temperature T inner tube of the indoor heat exchanger, and if the T inner tube is more than the T frequency limiting temperature, reducing the frequency of the compressor of the air conditioner by one gear until the frequency of the compressor reaches the adjustment threshold value. If the T inner pipe is more than or equal to the T frequency limiting temperature, the rotating speed of the indoor fan of the air conditioner is reduced by one gear until the adjusting threshold is reached, and if the rotating speed of the indoor fan reaches the adjusting threshold, the rotating speed of the indoor fan of the air conditioner can be reduced or the frequency of the compressor of the air conditioner can be reduced under the condition that the evaporating pressure of the outdoor heat exchanger is detected to be less than 0.65MPa after the outdoor environment temperature is detected for 3min below 4 ℃.
In the technical scheme disclosed in the embodiment, before controlling the frequency of the compressor of the air conditioner, the magnitude relation between the surface temperature of the indoor heat exchanger and the preset frequency limiting temperature is detected, so that whether the rotation speed of the indoor fan of the air conditioner can be controlled to be reduced is judged, and frosting is prevented on the premise that the safe and reliable operation of the air conditioner is ensured.
Optionally, based on any one of the foregoing embodiments, in still another embodiment of the control method of an air conditioner of the present invention, after the step S30, the method further includes:
if the rotating speed of the indoor fan and the frequency of the compressor reach the adjustment threshold, acquiring a surface image of the outdoor heat exchanger;
identifying the surface image based on a frosting identification model to obtain a frosting identification result of the outdoor heat exchanger;
and controlling the air conditioner to be switched into a refrigeration mode for defrosting according to the frosting identification result, and setting the rotating speed of the outdoor fan, the rotating speed of the indoor fan and the frequency of the compressor as initial values after the defrosting is successful.
In this embodiment, if the frosting condition is always satisfied, the air conditioner will repeatedly perform increasing the rotation speed of the outdoor fan, controlling the rotation speed of the indoor fan to decrease, or controlling the frequency of the compressor to decrease, so as to prevent frosting, until each of the above operation parameters reaches the adjustment threshold, where the adjustment threshold is the maximum threshold to which the rotation speed of the indoor fan and the frequency of the compressor can be adjusted, if the surface temperature of the indoor heat exchanger is greater than the frequency limiting temperature, in order to ensure the reliability of the air conditioner, the rotation speed of the indoor fan cannot be controlled to decrease, and then the rotation speed of the indoor fan has reached the adjustment threshold. When the adjustment threshold is reached, the air conditioner is still in a frosting environment, and frosting may occur. An image acquisition device, such as an infrared image sensor, may be positioned adjacent the outdoor heat exchanger to acquire an image of the surface of the outdoor heat exchanger. Alternatively, the surface image of the outdoor heat exchanger may be acquired at intervals of a preset time after both the rotational speed of the indoor fan and the frequency of the compressor reach the adjustment threshold. Training a frost recognition model special for recognizing the surface frost situation of the outdoor heat exchanger, inputting the acquired surface image of the outdoor heat exchanger into the frost recognition model for recognition, obtaining the frost recognition result of the outdoor heat exchanger when the surface image is acquired, and determining whether the outdoor heat exchanger is frosted and the frost severity according to the frost recognition result. If frosting occurs on the outdoor heat exchanger, the air conditioner can be controlled to be switched into a refrigerating mode for defrosting, and in the refrigerating mode, the outdoor heat exchanger is switched into a condenser to release heat to the outside, so that the frosting on the surface can be melted rapidly.
Further, the frosting severity can be determined according to the frosting identification result, the compressor frequency, the outdoor fan rotating speed and the indoor fan rotating speed of the refrigeration mode are determined according to the frosting severity and a preset comparison relation, and the refrigeration mode is operated to defrost accurately.
After the operation of the refrigeration mode, a frosting identification result can be obtained by acquiring a surface image of the outdoor heat exchanger, so that whether the defrosting is successful or not is determined, after the defrosting is successful, the heating mode is switched back, the outdoor fan rotating speed, the indoor fan rotating speed and the compressor frequency are set as initial values, and the initial values are the outdoor fan rotating speed, the indoor fan rotating speed and the compressor frequency when the air conditioner is operated normally before the operation of increasing the outdoor fan rotating speed, controlling the indoor fan rotating speed and controlling the compressor frequency is executed, and the step S10 is executed again.
In the technical scheme disclosed in the embodiment, after each operation parameter reaches the adjustment threshold value, the frosting condition of the surface of the outdoor heat exchanger is accurately identified based on the surface image of the outdoor heat exchanger, so that the frosting is accurately performed. The outdoor fan rotating speed is increased, the indoor fan rotating speed is controlled, the compressor frequency is controlled, and the compressor frequency is gradually adjusted to the threshold value to prevent frosting, and the frosting period is delayed, so that the defrosting period is prolonged, indoor temperature fluctuation is not affected due to frequent defrosting operation, meanwhile, bottom-closing defrosting is performed on frosting conditions, and the comfort of the air conditioner is improved.
The embodiment also provides a control device of the air conditioner, which can be integrated in the air conditioner. For example, as shown in fig. 6, the control device of the air conditioner may include:
an acquisition module 1001 for acquiring an outdoor ambient temperature of the air conditioner and an evaporation pressure of an outdoor heat exchanger;
a first control module 1002, configured to increase an outdoor fan rotation speed of the air conditioner if the outdoor ambient temperature and the evaporation pressure meet a frosting condition;
and the second control module 1003 is configured to control an indoor fan rotation speed of the air conditioner and a compressor frequency of the air conditioner to reduce a frosting probability of the outdoor heat exchanger if the outdoor fan rotation speed reaches a maximum rotation speed.
The second control module 1003 is further configured to obtain a first defrosting influence factor of the indoor fan and a second defrosting influence factor of the compressor;
if the first defrosting influence factor is larger than the second defrosting influence factor, controlling the rotating speed of the indoor fan until the rotating speed of the indoor fan reaches an adjustment threshold value, and controlling the frequency of the compressor;
and if the first defrosting influence factor is smaller than the second defrosting influence factor, controlling the frequency of the compressor until the frequency of the compressor reaches an adjustment threshold value, and controlling the rotating speed of the indoor fan.
The second control module 1003 is also used for
Acquiring the surface temperature of an indoor heat exchanger of the air conditioner;
if the surface temperature is greater than a preset frequency limiting temperature, controlling the frequency of the compressor;
and if the surface temperature is less than or equal to the preset frequency limiting temperature, controlling the rotating speed of the indoor fan, and controlling the frequency of the compressor until the rotating speed of the indoor fan reaches an adjustment threshold value.
The first control module 1002 is further configured to obtain the rotation speed of the outdoor fan and the ambient humidity of the outdoor heat exchanger;
determining a rotating speed change value of the rotating speed of the outdoor fan according to the environmental humidity, the rotating speed of the outdoor fan and a preset comparison relation;
and increasing the rotating speed of the outdoor fan of the air conditioner according to the rotating speed change value.
The first control module 1002 is further configured to obtain the rotation speed of the outdoor fan;
determining a plurality of adjustment time points and rotation speed change values corresponding to the adjustment time points according to the difference between the rotation speed of the outdoor fan and the maximum rotation speed;
and if the adjustment time point is reached, increasing the rotation speed of the outdoor fan of the air conditioner according to the rotation speed change value.
The control device of the air conditioner further comprises a defrosting module, wherein the defrosting module is used for acquiring a surface image of the outdoor heat exchanger if the rotating speed of the indoor fan and the frequency of the compressor reach adjustment thresholds;
Identifying the surface image based on a frosting identification model to obtain a frosting identification result of the outdoor heat exchanger;
and controlling the air conditioner to be switched into a refrigeration mode for defrosting according to the frosting identification result, and setting the rotating speed of the outdoor fan, the rotating speed of the indoor fan and the frequency of the compressor as initial values after the defrosting is successful.
The obtaining module 1001 is further configured to obtain, when the outdoor ambient temperature is less than or equal to a preset frosting temperature and the evaporation pressure is detected to be lower than the preset frosting pressure, a duration time for which the evaporation pressure is lower than the preset frosting pressure;
and if the duration reaches the preset duration, meeting the frosting condition.
As shown in fig. 7, fig. 7 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention. The air conditioner 1100 includes a processor 1101 having one or more processing cores, a memory 1102 having one or more computer readable storage media, and a computer program stored on the memory 1102 and executable on the processor. The processor 1101 is electrically connected to the memory 1102. It will be appreciated by those skilled in the art that the air conditioning structure shown in the figures is not limiting of the air conditioner and may include more or fewer components than shown, or may combine certain components, or may be a different arrangement of components.
The processor 1101 is a control center of the air conditioner 1100, connects various parts of the entire air conditioner 1100 using various interfaces and lines, and performs various functions and processes of the air conditioner 1100 by running or loading software programs and/or units stored in the memory 1102 and calling data stored in the memory 1102, thereby performing overall monitoring of the air conditioner 1100. The processor 1101 may be a processor CPU, a graphics processor GPU, a network processor (Network Processor, NP), etc., that may implement or perform the methods, steps and logic blocks disclosed in embodiments of the present invention.
In the embodiment of the present invention, the processor 1101 in the air conditioner 1100 loads instructions corresponding to the processes of one or more application programs into the memory 1102 according to the following steps, and the processor 1101 executes the application programs stored in the memory 1102, so as to implement various functions, for example:
acquiring the outdoor environment temperature of the air conditioner and the evaporation pressure of an outdoor heat exchanger;
if the outdoor environment temperature and the evaporation pressure meet frosting conditions, increasing the rotating speed of an outdoor fan of the air conditioner;
and if the rotating speed of the outdoor fan reaches the maximum rotating speed, controlling the rotating speed of the indoor fan of the air conditioner and the frequency of the compressor of the air conditioner so as to reduce the frosting probability of the outdoor heat exchanger.
The specific implementation of each operation above may be referred to the previous embodiments, and will not be described herein.
Optionally, as shown in fig. 7, the air conditioner 1100 further includes: a touch display 1103, a radio frequency circuit 1104, an audio circuit 1105, an input unit 1106, and a power supply 1107. The processor 1101 is electrically connected to the touch display 1103, the radio frequency circuit 1104, the audio circuit 1105, the input unit 1106, and the power supply 1107, respectively. It will be appreciated by those skilled in the art that the air conditioning structure shown in fig. 7 is not limiting of the air conditioner and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
The touch display 1103 may be used to display a graphical user interface and receive an operation instruction generated by a user acting on the graphical user interface. The touch display 1103 may include a display panel and a touch panel. Among other things, the display panel may be used to display information input by a user or information provided to the user and various graphical user interfaces of the air conditioner, which may be composed of graphics, text, icons, video, and any combination thereof. Alternatively, the display panel may be configured in the form of a liquid crystal display (LCD, liquid Crystal Display), an Organic Light-Emitting Diode (OLED), or the like. The touch panel may be used to collect touch operations on or near the user (such as operations on or near the touch panel by the user using any suitable object or accessory such as a finger, stylus, etc.), and generate corresponding operation instructions, and the operation instructions execute corresponding programs. Alternatively, the touch panel may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends the touch point coordinates to the processor 1101, and can receive and execute commands sent from the processor 1101. The touch panel may overlay the display panel, and upon detection of a touch operation thereon or thereabout, the touch panel is passed to the processor 1101 to determine the type of touch event, and the processor 1101 then provides a corresponding visual output on the display panel based on the type of touch event. In the embodiment of the present invention, the touch panel and the display panel may be integrated into the touch display 1103 to realize the input and output functions. In some embodiments, however, the touch panel and the touch panel may be implemented as two separate components to perform the input and output functions. I.e. the touch screen 1103 may also implement an input function as part of the input unit 1106.
The rf circuit 1104 may be configured to receive and transmit rf signals to and from a network device or other air conditioner by establishing wireless communication with the network device or other air conditioner.
The audio circuit 1105 may be used to provide an audio interface between the user and the air conditioner through a speaker, microphone. The audio circuit 1105 may transmit the received electrical signal after audio data conversion to a speaker, where the electrical signal is converted into a sound signal for output; on the other hand, the microphone converts the collected sound signals into electrical signals, which are received by the audio circuit 1105 and converted into audio data, which are processed by the audio data output processor 1101, and sent to, for example, another air conditioner via the radio frequency circuit 1104, or the audio data are output to the memory 1102 for further processing. The audio circuit 1105 may also include an ear bud jack to provide communication between the peripheral headphones and the air conditioner.
The input unit 1106 may be used to receive input numbers, character information, or user characteristic information (e.g., fingerprint, iris, facial information, etc.), and to generate keyboard, mouse, joystick, optical, or trackball signal inputs related to user settings and function control.
The power supply 1107 is used to power the various components of the air conditioner 1100. Alternatively, the power supply 1107 may be logically connected to the processor 1101 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system. The power supply 1107 may also include one or more of any of a direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.
Although not shown in fig. 7, the air conditioner 1100 may further include a camera, a sensor, a wireless fidelity module, a bluetooth module, etc., which will not be described herein.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that all or a portion of the steps of the various methods of the above embodiments may be performed by instructions, or by instructions controlling associated hardware, which may be stored in a computer-readable storage medium and loaded and executed by a processor.
To this end, an embodiment of the present invention provides a computer-readable storage medium in which a plurality of computer programs are stored, the computer programs being capable of being loaded by a processor to perform any one of the control methods of the air conditioner provided by the embodiment of the present invention. The computer program may perform the steps of a control method of an air conditioner as follows:
Acquiring the outdoor environment temperature of the air conditioner and the evaporation pressure of an outdoor heat exchanger;
if the outdoor environment temperature and the evaporation pressure meet frosting conditions, increasing the rotating speed of an outdoor fan of the air conditioner;
and if the rotating speed of the outdoor fan reaches the maximum rotating speed, controlling the rotating speed of the indoor fan of the air conditioner and the frequency of the compressor of the air conditioner so as to reduce the frosting probability of the outdoor heat exchanger.
The specific implementation of each operation above may be referred to the previous embodiments, and will not be described herein.
Wherein the computer-readable storage medium may comprise: read Only Memory (ROM), random access Memory (RAM, random Access Memory), magnetic or optical disk, and the like.
Because the computer program stored in the computer readable storage medium can execute any air conditioner control method provided by the embodiment of the present invention, the beneficial effects that any air conditioner control method provided by the embodiment of the present invention can be achieved, and detailed descriptions of the foregoing embodiments are omitted herein.
In the embodiments of the control device, the computer readable storage medium, the air conditioner and the computer program product of the air conditioner, the descriptions of the embodiments are emphasized, and the parts of one embodiment, which are not described in detail, can be referred to the related descriptions of other embodiments. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the control device, the computer readable storage medium, the computer program product, the air conditioner and the specific working process and the beneficial effects of the corresponding units of the air conditioner described above may refer to the description of the control method of the air conditioner in the above embodiments, which is not repeated herein.
The foregoing describes in detail a control method and apparatus for an air conditioner, a computer readable storage medium and a computer program product provided by embodiments of the present invention, and specific examples are applied to illustrate the principles and embodiments of the present invention, and the above description of the embodiments is only for helping to understand the method and core idea of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present invention, the present description should not be construed as limiting the present invention.
Claims (10)
1. A control method of an air conditioner, the control method of the air conditioner comprising:
acquiring the outdoor environment temperature of the air conditioner and the evaporation pressure of an outdoor heat exchanger;
if the outdoor environment temperature and the evaporation pressure meet frosting conditions, increasing the rotating speed of an outdoor fan of the air conditioner;
and if the rotating speed of the outdoor fan reaches the maximum rotating speed, controlling the rotating speed of the indoor fan of the air conditioner and the frequency of the compressor of the air conditioner so as to reduce the frosting probability of the outdoor heat exchanger.
2. The control method of an air conditioner according to claim 1, wherein said controlling an indoor fan speed of the air conditioner and a compressor frequency of the air conditioner includes:
Acquiring a first defrosting influence factor of the indoor fan and a second defrosting influence factor of the compressor;
if the first defrosting influence factor is larger than the second defrosting influence factor, controlling the rotating speed of the indoor fan until the rotating speed of the indoor fan reaches an adjustment threshold value, and controlling the frequency of the compressor;
and if the first defrosting influence factor is smaller than the second defrosting influence factor, controlling the frequency of the compressor until the frequency of the compressor reaches an adjustment threshold value, and controlling the rotating speed of the indoor fan.
3. The control method of an air conditioner as set forth in claim 1, wherein said controlling an indoor fan speed of the air conditioner and a compressor frequency of the air conditioner includes:
acquiring the surface temperature of an indoor heat exchanger of the air conditioner;
if the surface temperature is greater than a preset frequency limiting temperature, controlling the frequency of the compressor;
and if the surface temperature is less than or equal to the preset frequency limiting temperature, controlling the rotating speed of the indoor fan, and controlling the frequency of the compressor until the rotating speed of the indoor fan reaches an adjustment threshold value.
4. The control method of an air conditioner as set forth in claim 1, wherein said increasing an outdoor fan speed of the air conditioner includes:
acquiring the rotating speed of the outdoor fan and the ambient humidity of the outdoor heat exchanger;
determining a rotating speed change value of the rotating speed of the outdoor fan according to the environmental humidity, the rotating speed of the outdoor fan and a preset comparison relation;
and increasing the rotating speed of the outdoor fan of the air conditioner according to the rotating speed change value.
5. The method of controlling an air conditioner as set forth in claim 1, wherein the step of increasing the rotation speed of the outdoor fan of the air conditioner includes:
acquiring the rotating speed of the outdoor fan;
determining a plurality of adjustment time points and rotation speed change values corresponding to the adjustment time points according to the difference between the rotation speed of the outdoor fan and the maximum rotation speed;
and if the adjustment time point is reached, increasing the rotation speed of the outdoor fan of the air conditioner according to the rotation speed change value.
6. The method of controlling an air conditioner according to claim 1, wherein after controlling an indoor fan speed of the air conditioner and a compressor frequency of the air conditioner, further comprising:
if the rotating speed of the indoor fan and the frequency of the compressor reach the adjustment threshold, acquiring a surface image of the outdoor heat exchanger;
Identifying the surface image based on a frosting identification model to obtain a frosting identification result of the outdoor heat exchanger;
and controlling the air conditioner to be switched into a refrigeration mode for defrosting according to the frosting identification result, and setting the rotating speed of the outdoor fan, the rotating speed of the indoor fan and the frequency of the compressor as initial values after the defrosting is successful.
7. The control method of an air conditioner according to any one of claims 1 to 6, further comprising, after the acquiring of the outdoor ambient temperature of the air conditioner and the evaporation pressure of the outdoor heat exchanger:
if the outdoor environment temperature is less than or equal to a preset frosting temperature, when the evaporation pressure is detected to be lower than the preset frosting pressure, acquiring the duration time of the evaporation pressure lower than the preset frosting pressure;
and if the duration reaches the preset duration, meeting the frosting condition.
8. A control device of an air conditioner, characterized in that the control device of an air conditioner comprises:
the acquisition module is used for acquiring the outdoor environment temperature of the air conditioner and the evaporation pressure of the outdoor heat exchanger;
the first control module is used for increasing the rotating speed of an outdoor fan of the air conditioner if the outdoor environment temperature and the evaporation pressure meet frosting conditions;
And the second control module is used for controlling the indoor fan rotating speed of the air conditioner and the compressor frequency of the air conditioner if the outdoor fan rotating speed reaches the maximum rotating speed so as to reduce the frosting probability of the outdoor heat exchanger.
9. An air conditioner comprising a processor and a memory, the memory storing a computer program which, when executed by the processor, causes the processor to perform the steps of the control method of the air conditioner of any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a computer program for causing an electronic device to execute the steps of the control method of the air conditioner according to any one of claims 1 to 7 when the computer program is run on the electronic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311715535.2A CN117553422A (en) | 2023-12-13 | 2023-12-13 | Air conditioner control method and device, air conditioner and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311715535.2A CN117553422A (en) | 2023-12-13 | 2023-12-13 | Air conditioner control method and device, air conditioner and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117553422A true CN117553422A (en) | 2024-02-13 |
Family
ID=89811028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311715535.2A Pending CN117553422A (en) | 2023-12-13 | 2023-12-13 | Air conditioner control method and device, air conditioner and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117553422A (en) |
-
2023
- 2023-12-13 CN CN202311715535.2A patent/CN117553422A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110608519B (en) | Air conditioner control method and system and air conditioner | |
| CN112665117B (en) | Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium | |
| CN110579010B (en) | Control method and control device for electronic expansion valve of multi-split internal machine and air conditioner | |
| CN104564611A (en) | Method and device for controlling electric heating belt of compressor | |
| CN112665116B (en) | Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium | |
| WO2019075821A1 (en) | Method for controlling air conditioner in multimedia classroom | |
| CN108826585A (en) | Control method and device of air conditioner, storage medium and air conditioner | |
| WO2024001534A1 (en) | Outdoor unit control method for air conditioning system, device, outdoor unit, and air conditioning system | |
| CN112781289B (en) | Defrosting control method, device and equipment for low-temperature heat pump and storage medium | |
| CN113606726A (en) | Air conditioner noise control method and device and air conditioner | |
| WO2023005218A1 (en) | Air conditioner control method and control apparatus, and air conditioner | |
| CN115264778A (en) | Air conditioner control method and device, electronic equipment and storage medium | |
| CN117553422A (en) | Air conditioner control method and device, air conditioner and storage medium | |
| CN114791155B (en) | Anti-freezing control method and device for air conditioner, electronic equipment and storage medium | |
| CN112432320B (en) | Control method for preventing frosting of air conditioning system, controller of control method and air conditioning system | |
| CN117847709A (en) | Air conditioner control method and device, air conditioner and storage medium | |
| CN117889528A (en) | Air conditioner defrosting control method and device, air conditioner and computer readable storage medium | |
| CN112665115B (en) | Multi-online defrosting method and device, multi-online air conditioning system and readable storage medium | |
| CN117232093A (en) | Defrosting control method and device, air conditioner and storage medium | |
| CN114264032B (en) | Supercooling valve control method and device, air conditioner and computer readable storage medium | |
| CN117663667A (en) | Refrigerator control method and device, refrigerator and storage medium | |
| CN117490204A (en) | Kitchen air conditioner control method, device, system and computer readable storage medium | |
| CN117469853A (en) | Electronic expansion valve adjusting method and device, air source heat pump and storage medium | |
| CN118310122A (en) | Air conditioner, air conditioner main board heat dissipation method and device, electronic equipment and storage medium | |
| CN117722799A (en) | Fan control method and device, refrigerator and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |