CN117168025A - Air conditioner control method, controller, air conditioner and storage medium - Google Patents
Air conditioner control method, controller, air conditioner and storage medium Download PDFInfo
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- CN117168025A CN117168025A CN202210574468.6A CN202210574468A CN117168025A CN 117168025 A CN117168025 A CN 117168025A CN 202210574468 A CN202210574468 A CN 202210574468A CN 117168025 A CN117168025 A CN 117168025A
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- 238000000034 method Methods 0.000 title claims abstract description 85
- 238000007791 dehumidification Methods 0.000 claims abstract description 71
- 230000009467 reduction Effects 0.000 claims description 33
- 238000010257 thawing Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 47
- 238000005265 energy consumption Methods 0.000 abstract description 17
- 239000003507 refrigerant Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
Classifications
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
-
- 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
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—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
- F24F2110/50—Air quality properties
- F24F2110/64—Airborne particle content
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method of an air conditioner, a controller, the air conditioner and a storage medium, wherein the current temperature and target temperature interval of an indoor heat exchanger, the opening adjustment interval of a throttling device and the current opening are obtained in a dehumidification mode; determining a first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening; when the first target opening is located in the opening adjustment section, adjusting the opening of the throttling device to the first target opening; and when the first target opening is positioned outside the opening adjustment interval, adjusting the opening of the throttling device to a second target opening, adjusting the indoor fan to a target rotating speed and/or adjusting the compressor to a target operating frequency, wherein the second target opening is positioned in the opening adjustment interval. According to the embodiment of the invention, the opening of the throttling device is preferentially adjusted, and then the rotating speed of the indoor fan and/or the operating frequency of the compressor are adjusted, so that the problems of increased energy consumption or poor dehumidification effect caused by directly adjusting the frequency of the compressor can be avoided.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to a control method of an air conditioner, a controller, an air conditioner, and a storage medium.
Background
At present, when an air conditioner dehumidifies under a low temperature condition that a dew point temperature is higher than a freezing point temperature, since the temperature of an evaporator is associated with a dehumidification effect, specifically, frost is formed when the temperature of the evaporator is lower than the freezing point temperature, thereby resulting in deterioration of the dehumidification effect; when the evaporator temperature is high, the condensation generating effect becomes poor, and thus the dehumidifying effect becomes poor. In this regard, the existing air conditioner often directly controls the compressor frequency to adjust the evaporator temperature, thereby improving the dehumidification effect of the evaporator. However, directly adjusting the frequency of the compressor may increase energy consumption or reduce dehumidifying effect, and in particular, directly increasing the frequency of the compressor may increase energy consumption of the air conditioner; in addition, direct frequency reduction of the compressor can lead to reduction of the flow of the refrigerant, so that the heat exchange capacity of the evaporator is reduced, the dehumidification capacity is reduced, and the dehumidification is not facilitated.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a control method of an air conditioner, a controller, the air conditioner and a storage medium, which can enhance the dehumidification effect of the air conditioner or reduce the energy consumption of the air conditioner.
In a first aspect, an embodiment of the present invention provides a method for controlling an air conditioner, where the air conditioner is provided with a throttling device; the method comprises the following steps: in a dehumidification mode, acquiring a current temperature and target temperature interval of an indoor heat exchanger, an opening adjustment interval of the throttling device and a current opening; determining a first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening; when the first target opening is located in the opening adjustment section, adjusting the opening of the throttling device to the first target opening; and when the first target opening is positioned outside the opening adjustment interval, determining a second target opening of the throttling device, determining a target rotating speed of an indoor fan and/or a target operating frequency of a compressor, adjusting the opening of the throttling device to the second target opening, and adjusting the rotating speed of the indoor fan to the target rotating speed and/or the operating frequency of the compressor to the target operating frequency, wherein the second target opening is positioned in the opening adjustment interval.
The control method of the air conditioner has at least the following beneficial effects: in the dehumidification mode, in order to realize the temperature adjustment of the indoor heat exchanger, the embodiment of the invention does not directly adjust the operation frequency of the compressor, but preferentially adjusts the opening of the throttling device. Specifically, firstly, the embodiment of the invention obtains the current temperature of the indoor heat exchanger, the opening adjustment interval of the throttling device and the current opening, and then determines the first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening; if the first target opening is located in the opening adjustment interval, namely that the embodiment of the invention can meet the temperature adjustment of the indoor heat exchanger only by adjusting the opening of the throttling device, the embodiment of the invention can adjust the opening of the throttling device to the first target opening without adjusting the running frequency of the compressor; if the first target opening is located outside the opening adjustment interval, that is, it indicates that the embodiment of the invention needs to adjust the rotation speed of the indoor fan and/or the operation frequency of the compressor in addition to the opening of the throttling device to meet the temperature adjustment of the indoor heat exchanger, then the embodiment of the invention can preferentially adjust the opening of the throttling device to the second target opening, and also can properly adjust the rotation speed of the indoor fan to the target rotation speed and/or adjust the operation frequency of the compressor to the target operation frequency. Therefore, when the temperature of the indoor heat exchanger needs to be increased in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is subjected to frequency reduction, so that the problem that the dehumidification effect is poor due to direct frequency reduction of the compressor can be avoided; in addition, when the temperature of the indoor heat exchanger needs to be reduced in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is increased, so that the problem of energy consumption increase caused by directly increasing the frequency of the compressor can be avoided.
According to some embodiments of the invention, the adjusting the opening of the throttle device to the second target opening includes one of: adjusting the opening of the throttling device to an opening interval upper limit value of the opening adjustment interval; and adjusting the opening of the throttling device to an opening section lower limit value of the opening adjustment section.
According to some embodiments of the invention, in the case of adjusting the rotational speed of the indoor fan to the target rotational speed and the operating frequency of the compressor to the target operating frequency, the adjusting the rotational speed of the indoor fan to the target rotational speed and the operating frequency of the compressor to the target operating frequency includes one of: when the second target opening is larger than the current opening, acquiring a rotating speed adjusting interval of the indoor fan, adjusting the rotating speed of the indoor fan to the rotating speed interval upper limit value of the rotating speed adjusting interval, and then adjusting the operating frequency of the compressor to the target operating frequency; and when the second target opening is smaller than the current opening, acquiring a rotating speed adjusting interval of the indoor fan, adjusting the rotating speed of the indoor fan to a rotating speed interval lower limit value of the rotating speed adjusting interval, and adjusting the operating frequency of the compressor to the target operating frequency.
According to some embodiments of the invention, the target temperature interval is provided with a temperature interval lower limit value; the determining the first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening comprises the following steps: determining an opening degree increase amount of the throttling device under the condition that the current temperature is less than or equal to the lower limit value of the temperature interval; and determining a first target opening degree of the throttling device according to the current opening degree and the opening degree increasing amount.
According to some embodiments of the invention, the target temperature interval is provided with a temperature interval upper limit value; the determining the first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening comprises the following steps: determining an opening degree reduction amount of the throttling device under the condition that the current temperature is greater than the upper limit value of the temperature interval; and determining a first target opening degree of the throttling device according to the current opening degree and the opening degree reduction.
According to some embodiments of the invention, the upper limit value of the temperature interval is obtained by: acquiring the air temperature and the air humidity of an air inlet of the indoor heat exchanger, and determining a dew point temperature according to the air temperature and the air humidity; and carrying out difference processing on the dew point temperature and a preset deviation value to obtain the upper limit value of the temperature interval.
According to some embodiments of the invention, the determining the first target opening of the throttle device according to the current temperature, the target temperature interval and the current opening includes: and determining that the current opening is a first target opening of the throttling device when the current temperature is within the target temperature interval.
According to some embodiments of the invention, before the step of determining the first target opening of the throttle device according to the current temperature, the target temperature interval and the current opening, the method includes: acquiring the air temperature and the air humidity of an air inlet of the indoor heat exchanger, and determining a dew point temperature according to the air temperature and the air humidity; and determining a first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening under the condition that the dew point temperature is larger than a first preset temperature and the current temperature is smaller than the dew point temperature.
According to some embodiments of the invention, the method further comprises: and in the case that the dew point temperature is greater than the first preset temperature and the current temperature is greater than or equal to the dew point temperature, reducing the opening degree of the throttling device and/or increasing the operating frequency of the compressor.
According to some embodiments of the invention, the method further comprises: and defrosting the indoor heat exchanger according to the current temperature under the condition that the dew point temperature is smaller than or equal to the first preset temperature.
In a second aspect, an embodiment of the present invention provides a controller, including: the air conditioner control device comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the control method of the air conditioner according to the first aspect when running the computer program.
The controller according to the embodiment of the invention has at least the following beneficial effects: in the dehumidification mode, in order to realize the temperature adjustment of the indoor heat exchanger, the embodiment of the invention does not directly adjust the operation frequency of the compressor, but preferentially adjusts the opening of the throttling device. Specifically, firstly, the embodiment of the invention obtains the current temperature of the indoor heat exchanger, the opening adjustment interval of the throttling device and the current opening, and then determines the first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening; if the first target opening is located in the opening adjustment interval, namely that the embodiment of the invention can meet the temperature adjustment of the indoor heat exchanger only by adjusting the opening of the throttling device, the embodiment of the invention can adjust the opening of the throttling device to the first target opening without adjusting the running frequency of the compressor; if the first target opening is located outside the opening adjustment interval, that is, it indicates that the embodiment of the invention needs to adjust the rotation speed of the indoor fan and/or the operation frequency of the compressor in addition to the opening of the throttling device to meet the temperature adjustment of the indoor heat exchanger, then the embodiment of the invention can preferentially adjust the opening of the throttling device to the second target opening, and also can properly adjust the rotation speed of the indoor fan to the target rotation speed and/or adjust the operation frequency of the compressor to the target operation frequency. Therefore, when the temperature of the indoor heat exchanger needs to be increased in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is subjected to frequency reduction, so that the problem that the dehumidification effect is poor due to direct frequency reduction of the compressor can be avoided; in addition, when the temperature of the indoor heat exchanger needs to be reduced in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is increased, so that the problem of energy consumption increase caused by directly increasing the frequency of the compressor can be avoided.
In a third aspect, an embodiment of the present invention provides an air conditioner, including the controller according to the second aspect.
The air conditioner provided by the embodiment of the invention has at least the following beneficial effects: in the dehumidification mode, in order to realize the temperature adjustment of the indoor heat exchanger, the embodiment of the invention does not directly adjust the operation frequency of the compressor, but preferentially adjusts the opening of the throttling device. Specifically, firstly, the embodiment of the invention obtains the current temperature of the indoor heat exchanger, the opening adjustment interval of the throttling device and the current opening, and then determines the first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening; if the first target opening is located in the opening adjustment interval, namely that the embodiment of the invention can meet the temperature adjustment of the indoor heat exchanger only by adjusting the opening of the throttling device, the embodiment of the invention can adjust the opening of the throttling device to the first target opening without adjusting the running frequency of the compressor; if the first target opening is located outside the opening adjustment interval, that is, it indicates that the embodiment of the invention needs to adjust the rotation speed of the indoor fan and/or the operation frequency of the compressor in addition to the opening of the throttling device to meet the temperature adjustment of the indoor heat exchanger, then the embodiment of the invention can preferentially adjust the opening of the throttling device to the second target opening, and also can properly adjust the rotation speed of the indoor fan to the target rotation speed and/or adjust the operation frequency of the compressor to the target operation frequency. Therefore, when the temperature of the indoor heat exchanger needs to be increased in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is subjected to frequency reduction, so that the problem that the dehumidification effect is poor due to direct frequency reduction of the compressor can be avoided; in addition, when the temperature of the indoor heat exchanger needs to be reduced in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is increased, so that the problem of energy consumption increase caused by directly increasing the frequency of the compressor can be avoided.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for performing the control method of an air conditioner according to the first aspect.
The computer-readable storage medium according to the embodiment of the invention has at least the following advantageous effects: in the dehumidification mode, in order to realize the temperature adjustment of the indoor heat exchanger, the embodiment of the invention does not directly adjust the operation frequency of the compressor, but preferentially adjusts the opening of the throttling device. Specifically, firstly, the embodiment of the invention obtains the current temperature of the indoor heat exchanger, the opening adjustment interval of the throttling device and the current opening, and then determines the first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening; if the first target opening is located in the opening adjustment interval, namely that the embodiment of the invention can meet the temperature adjustment of the indoor heat exchanger only by adjusting the opening of the throttling device, the embodiment of the invention can adjust the opening of the throttling device to the first target opening without adjusting the running frequency of the compressor; if the first target opening is located outside the opening adjustment interval, that is, it indicates that the embodiment of the invention needs to adjust the rotation speed of the indoor fan and/or the operation frequency of the compressor in addition to the opening of the throttling device to meet the temperature adjustment of the indoor heat exchanger, then the embodiment of the invention can preferentially adjust the opening of the throttling device to the second target opening, and also can properly adjust the rotation speed of the indoor fan to the target rotation speed and/or adjust the operation frequency of the compressor to the target operation frequency. Therefore, when the temperature of the indoor heat exchanger needs to be increased in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is subjected to frequency reduction, so that the problem that the dehumidification effect is poor due to direct frequency reduction of the compressor can be avoided; in addition, when the temperature of the indoor heat exchanger needs to be reduced in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is increased, so that the problem of energy consumption increase caused by directly increasing the frequency of the compressor can be avoided.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.
Fig. 1 is a schematic diagram of a system architecture platform for performing a control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 6 is a flowchart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 7 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 8 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
Fig. 9 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 10 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 11 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 12 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 13 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 14 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 15 is an overall flowchart of a control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In some cases, when the air conditioner dehumidifies under a low temperature condition in which the dew point temperature is higher than the freezing point temperature, since the temperature of the evaporator is associated with the dehumidification effect, particularly, frost is formed when the temperature of the evaporator is lower than the freezing point temperature, thereby causing deterioration of the dehumidification effect; when the evaporator temperature is high, the condensation generating effect becomes poor, and thus the dehumidifying effect becomes poor. In this regard, the existing air conditioner often directly controls the compressor frequency to adjust the evaporator temperature, thereby improving the dehumidification effect of the evaporator. However, directly adjusting the frequency of the compressor may increase energy consumption or reduce dehumidifying effect, and in particular, directly increasing the frequency of the compressor may increase energy consumption of the air conditioner; in addition, direct frequency reduction of the compressor can lead to reduction of the flow of the refrigerant, so that the heat exchange capacity of the evaporator is reduced, the dehumidification capacity is reduced, and the dehumidification is not facilitated.
Based on the above, the embodiment of the invention provides a control method of an air conditioner, a controller, an air conditioner and a storage medium, and in particular, in order to realize temperature adjustment of an indoor heat exchanger in a dehumidification mode, the embodiment of the invention does not directly adjust the operation frequency of a compressor, but preferentially adjusts the opening of a throttling device. Therefore, when the temperature of the indoor heat exchanger needs to be increased in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is subjected to frequency reduction, so that the problem that the dehumidification effect is poor due to direct frequency reduction of the compressor can be avoided; in addition, when the temperature of the indoor heat exchanger needs to be reduced in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is increased, so that the problem of energy consumption increase caused by directly increasing the frequency of the compressor can be avoided.
Embodiments of the present invention will be further described below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a system architecture platform for executing a control method of an air conditioner according to an embodiment of the present invention.
The system architecture platform 100 of the present embodiment includes one or more processors 110 and a memory 120, and in fig. 1, one processor 110 and one memory 120 are taken as an example.
The processor 110 and the memory 120 may be connected by a bus or otherwise, which is illustrated in FIG. 1 as a bus connection.
Memory 120, as a non-transitory computer-readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer-executable programs. In addition, memory 120 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some implementations, the memory 120 optionally includes memory 120 remotely located relative to the processor 110, which may be connected to the system architecture platform 100 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Those skilled in the art will appreciate that the device structure shown in fig. 1 is not limiting of the system architecture platform 100 and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
In the system architecture platform 100 shown in fig. 1, the processor 110 may be configured to invoke a control program of an air conditioner stored in the memory 120, thereby implementing a control method of the air conditioner.
Based on the hardware structure of the system architecture platform 100, various embodiments of the air conditioner of the present invention are presented.
As shown in fig. 2, fig. 2 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.
Specifically, the air conditioner according to the embodiment of the invention includes, but is not limited to, an outdoor unit including, but not limited to, a compressor 210 and an outdoor heat exchanger 220, and an indoor unit including, but not limited to, a throttle device 230, an indoor heat exchanger 240 and an indoor fan 250, where the compressor 210, the outdoor heat exchanger 220, the throttle device 230 and the indoor heat exchanger 240 together form a refrigerant circuit.
The outdoor heat exchanger 220 is a condenser, the indoor heat exchanger 240 is an evaporator, and the throttle device 230 may be an electronic expansion valve having a plurality of opening degree adjusting functions.
It will be appreciated that the air conditioner of the embodiment of the present invention may communicate with the controller such that the controller may control the opening degree of the throttle device 230 and the rotational speed of the indoor fan 250 in the indoor unit, as well as the operation frequency of the compressor 210 in the outdoor unit.
In addition, it is understood that with respect to the structure of the controller described above, the processor 110 and the memory 120 as shown in fig. 1 may be included.
In addition, it is understood that the installation position of the controller may be combined with the air conditioner or may be independently arranged outside the air conditioner.
Based on the above-described hardware structures of the system architecture platform 100 and the air conditioner, various embodiments of the control method of the air conditioner of the present invention are presented.
As shown in fig. 3, fig. 3 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention. The control method includes, but is not limited to, step S100, step S200, step S300, and step S400.
Step S100, in a dehumidification mode, acquiring a current temperature and target temperature interval of the indoor heat exchanger, an opening adjustment interval of the throttling device and a current opening.
It should be noted that, the current temperature of the indoor heat exchanger mentioned above is used to represent the current refrigerant temperature in the evaporator, and may refer to the temperature of the middle part of the evaporator or the temperature of other positions; when the current temperature of the indoor heat exchanger is the temperature of the middle part of the evaporator, the temperature is used for representing the temperature of the refrigerant at the middle position of the length of the evaporation main pipe in the evaporator.
It should be noted that the above-mentioned target temperature interval may refer to a temperature interval in which the indoor heat exchanger has a relatively good dehumidification effect in the dehumidification mode. The method for acquiring the target temperature interval may be to acquire a pre-stored temperature interval from a local memory as the target temperature interval, or may acquire a temperature interval input by a user as the target temperature interval.
It can be appreciated that the embodiment of the invention can acquire the current temperature of the indoor heat exchanger in real time by arranging the temperature sensor on the surface of the evaporator, such as the middle position of the evaporator.
It can be understood that the temperature sensor in the embodiment of the invention can be a contact temperature sensor or a non-contact temperature sensor; in addition, the temperature sensor in the embodiment of the present invention may be an infrared temperature sensor or other types of temperature sensors, and the type of the temperature sensor is not limited in the embodiment of the present invention.
In addition, it should be noted that, the valve opening of the throttling device according to the embodiment of the present invention may be controlled by a stepper motor, so the air conditioner may obtain the current opening of the throttling device through the current control state of the stepper motor, and the air conditioner may also obtain the opening adjustment interval of the throttling device through the allowable control state of the stepper motor, such as the allowable rotation angle.
It is understood that the above-mentioned opening adjustment section refers to a section in which the throttle device is movable, and the throttle device can be adjusted only in the opening adjustment section and cannot be adjusted outside the opening adjustment section.
Step S200, determining a first target opening degree of the throttling device according to the current temperature, the target temperature interval and the current opening degree.
Specifically, the target temperature interval in the embodiment of the invention may refer to a temperature interval in which the indoor heat exchanger has a relatively good dehumidification effect in a dehumidification mode. If the current temperature of the indoor heat exchanger is in the target temperature interval, the current dehumidification effect is good, and the air conditioner can not be regulated at the moment; if the current temperature of the indoor heat exchanger is outside the target temperature interval, the current dehumidification effect is poor, and the air conditioner needs to be adjusted at the moment.
It should be noted that, in the case that the current temperature of the indoor heat exchanger is located outside the target temperature interval, in order to improve the dehumidification effect, in the embodiment of the present invention, the opening degree variation is calculated according to the current temperature and the target temperature interval, where if the throttle device adjusts the opening degree variation, the temperature of the indoor heat exchanger falls into the target temperature interval, then the dehumidification effect of the air conditioner is improved.
After the opening degree variation is calculated according to the current temperature and the target temperature interval, the embodiment of the invention also calculates the current opening degree and the opening degree variation to obtain the first target opening degree which needs to be reached by the throttling device.
It is understood that when the opening degree variation amount is an increase amount, the first target opening degree is larger than the current opening degree; when the opening amount variation is a decrease amount, the first target opening amount is smaller than the current opening amount.
Step S300, when the first target opening is located in the opening adjustment section, the opening of the throttle device is adjusted to the first target opening.
Specifically, after determining the first target opening of the throttling device, the embodiment of the present invention further needs to determine whether the first target opening falls within the opening adjustment interval of the throttling device. If the first target opening is located in the opening adjustment interval, it indicates that the temperature of the indoor heat exchanger can fall into the target temperature interval by adjusting the opening of the throttling device to the first target opening.
Step S400, when the first target opening is located outside the opening adjustment interval, determining a second target opening of the throttling device, determining a target rotating speed of the indoor fan and/or a target operating frequency of the compressor, adjusting the opening of the throttling device to the second target opening, and adjusting the rotating speed of the indoor fan to the target rotating speed and/or the operating frequency of the compressor to the target operating frequency, wherein the second target opening is located in the opening adjustment interval.
Specifically, after determining the first target opening of the throttling device, the embodiment of the present invention further needs to determine whether the first target opening falls within the opening adjustment interval of the throttling device. If the first target opening is not located in the opening adjustment interval, it indicates that the temperature of the indoor heat exchanger cannot fall into the target temperature interval even if the opening of the throttling device is adjusted to the opening interval upper limit value or the opening interval lower limit value of the opening adjustment interval, that is, the opening of the throttling device is adjusted to the maximum opening or the minimum opening.
In order to reduce the frequency adjustment range of the compressor, the embodiment of the present invention may first adjust the opening of the throttling device to the opening interval upper limit value or the opening interval lower limit value of the opening adjustment interval, that is, adjust the opening of the throttling device to the allowable maximum opening or the allowable minimum opening, and then adjust the frequency of the compressor, so as to reduce the problems of poor dehumidification effect or increased energy consumption caused by the excessive frequency adjustment range of the compressor.
Based on the above steps S100 to S400, according to the technical solution of the embodiment of the present invention, in order to realize the temperature adjustment of the indoor heat exchanger in the dehumidification mode, the embodiment of the present invention does not directly adjust the operation frequency of the compressor, but preferentially adjusts the opening of the throttling device. Specifically, firstly, the embodiment of the invention obtains the current temperature of the indoor heat exchanger, the opening adjustment interval of the throttling device and the current opening, and then determines the first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening; if the first target opening is located in the opening adjustment interval, namely that the embodiment of the invention can meet the temperature adjustment of the indoor heat exchanger only by adjusting the opening of the throttling device, the embodiment of the invention can adjust the opening of the throttling device to the first target opening without adjusting the running frequency of the compressor; if the first target opening is located outside the opening adjustment interval, that is, it indicates that the embodiment of the invention needs to adjust the rotation speed of the indoor fan and/or the operation frequency of the compressor in addition to the opening of the throttling device to meet the temperature adjustment of the indoor heat exchanger, then the embodiment of the invention can preferentially adjust the opening of the throttling device to the second target opening, and also can properly adjust the rotation speed of the indoor fan to the target rotation speed and/or adjust the operation frequency of the compressor to the target operation frequency. Therefore, when the temperature of the indoor heat exchanger needs to be increased in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is subjected to frequency reduction, so that the problem that the dehumidification effect is poor due to direct frequency reduction of the compressor can be avoided; in addition, when the temperature of the indoor heat exchanger needs to be reduced in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is increased, so that the problem of energy consumption increase caused by directly increasing the frequency of the compressor can be avoided.
It should be noted that, regarding the adjustment of the rotation speed of the indoor fan to the target rotation speed and/or the adjustment of the operation frequency of the compressor to the target operation frequency in the step S400, two implementation cases in fig. 4 or fig. 5 may be specifically included, which are specifically shown as follows:
as shown in fig. 4, fig. 4 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. In the case of adjusting the rotational speed of the indoor fan to the target rotational speed and the operating frequency of the compressor to the target operating frequency, steps S410 and S420 are included, but are not limited thereto, with respect to adjusting the rotational speed of the indoor fan to the target rotational speed and the operating frequency of the compressor to the target operating frequency in step S400 described above.
Step S410, when the second target opening is larger than the current opening, acquiring a rotating speed adjusting interval of the indoor fan;
and S420, adjusting the rotating speed of the indoor fan to the rotating speed interval upper limit value of the rotating speed adjusting interval, and adjusting the operating frequency of the compressor to the target operating frequency.
Specifically, if the embodiment of the invention still cannot enable the temperature of the indoor heat exchanger to fall into the target temperature interval after increasing the opening of the throttling device, for example, after adjusting the opening of the throttling device to the upper limit value of the opening interval, then the embodiment of the invention can preferentially adjust the rotating speed of the indoor fan to the upper limit value of the rotating speed interval of the rotating speed adjusting interval, and if the rotating speed of the indoor fan is raised to the maximum rotating speed, then the temperature of the indoor heat exchanger cannot fall into the target temperature interval, then the embodiment of the invention can adjust the operating frequency of the compressor, so that the temperature of the indoor heat exchanger falls into the target temperature interval.
Therefore, according to the technical scheme of the embodiment of the invention, in order to realize the temperature regulation of the indoor heat exchanger in the dehumidification mode, the embodiment of the invention does not directly regulate the operation frequency of the compressor, but preferentially regulates the opening degree of the throttling device, then regulates the rotation speed of the indoor fan, and finally regulates the operation frequency of the compressor, so that the embodiment of the invention can avoid the problem of poor dehumidification effect caused by direct frequency reduction of the compressor.
As shown in fig. 5, fig. 5 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. In the case of adjusting the rotational speed of the indoor fan to the target rotational speed and the operating frequency of the compressor to the target operating frequency, steps S430 and S440 are included, but are not limited to, regarding the adjustment of the rotational speed of the indoor fan to the target rotational speed and the adjustment of the operating frequency of the compressor to the target operating frequency in step S400 described above.
Step S430, when the second target opening is smaller than the current opening, acquiring a rotating speed adjusting interval of the indoor fan;
step S440, the rotating speed of the indoor fan is adjusted to the lower limit value of the rotating speed interval of the rotating speed adjusting interval, and then the operating frequency of the compressor is adjusted to the target operating frequency.
Specifically, if the opening degree of the throttling device is reduced, for example, the opening degree of the throttling device is adjusted to the lower limit value of the opening degree interval, and then the temperature of the indoor heat exchanger still cannot fall into the target temperature interval, the embodiment of the invention can preferentially adjust the rotating speed of the indoor fan, adjust the rotating speed of the indoor fan to the lower limit value of the rotating speed interval of the rotating speed adjusting interval, and if the rotating speed of the indoor fan is reduced to the minimum rotating speed, the temperature of the indoor heat exchanger still cannot fall into the target temperature interval, the embodiment of the invention can adjust the operating frequency of the compressor, so that the temperature of the indoor heat exchanger falls into the target temperature interval.
Therefore, according to the technical scheme of the embodiment of the invention, in order to realize the temperature adjustment of the indoor heat exchanger in the dehumidification mode, the embodiment of the invention does not directly adjust the operation frequency of the compressor, but preferentially adjusts the opening of the throttling device, then adjusts the rotating speed of the indoor fan, and finally adjusts the operation frequency of the compressor, so that the embodiment of the invention can avoid the problem of energy consumption increase caused by directly raising the frequency of the compressor.
In addition, as shown in fig. 6, fig. 6 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. Wherein, the target temperature interval is provided with a temperature interval lower limit value; regarding the determination of the first target opening degree of the throttle device according to the current temperature, the target temperature zone and the current opening degree in the above-described step S200, there are included, but not limited to, the steps S210 and S220.
Step S210, determining the opening degree increasing amount of the throttling device under the condition that the current temperature is less than or equal to the lower limit value of the temperature interval;
step S220, determining a first target opening degree of the throttle device according to the current opening degree and the opening degree increase amount.
Specifically, the target temperature interval in the embodiment of the present invention is provided with a temperature interval lower limit value, when the current temperature of the indoor heat exchanger is less than or equal to the temperature interval lower limit value, it indicates that the current dehumidification effect is poor, for example, the indoor heat exchanger generates frost to cause poor dehumidification effect, and at this time, the air conditioner needs to be adjusted.
It should be noted that, in the case that the current temperature of the indoor heat exchanger is less than or equal to the lower limit value of the temperature interval, the embodiment of the invention calculates the opening increase according to the current temperature and the target temperature interval, where if the throttle device adjusts the opening increase, the temperature of the indoor heat exchanger can fall into the target temperature interval, so that the dehumidifying effect of the air conditioner can be improved.
After the opening increasing amount is calculated according to the current temperature and the target temperature interval, the embodiment of the invention also calculates the current opening and the opening increasing amount to obtain the first target opening which needs to be reached by the throttling device.
In addition, as shown in fig. 7, fig. 7 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. Based on the case of the step shown in fig. 6 described above, step S450 is included in relation to the adjustment of the opening degree of the throttle device to the second target opening degree in step S400 described above.
Step S450, the opening degree of the throttle device is adjusted to the opening degree section upper limit value.
Specifically, when the current temperature of the indoor heat exchanger is less than or equal to the temperature interval lower limit value, the second target opening degree in the above step S400 corresponds to the opening degree interval upper limit value.
In addition, as shown in fig. 8, fig. 8 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. Wherein, the target temperature interval is provided with a temperature interval upper limit value; the first target opening degree of the throttle device is determined according to the current temperature, the target temperature zone and the current opening degree in the above step S200, including but not limited to steps S230 and S240.
Step S230, determining the opening degree reduction amount of the throttling device under the condition that the current temperature is greater than the upper limit value of the temperature interval;
step S240, determining a first target opening degree of the throttle device according to the current opening degree and the opening degree reduction amount.
Specifically, the target temperature interval in the embodiment of the present invention is provided with a temperature interval upper limit value, when the current temperature of the indoor heat exchanger is greater than the temperature interval upper limit value, it indicates that the current dehumidification effect is poor, for example, the temperature of the indoor heat exchanger approaches the dew point temperature, so that the dehumidification effect is poor, and at this time, the air conditioner needs to be adjusted.
It should be noted that, in the case that the current temperature of the indoor heat exchanger is greater than the upper limit value of the temperature interval, the embodiment of the invention calculates the opening degree reduction according to the current temperature and the target temperature interval, where if the throttle device adjusts the opening degree reduction, the temperature of the indoor heat exchanger can fall into the target temperature interval, and then the dehumidifying effect of the air conditioner can be improved.
After the opening degree reduction is calculated according to the current temperature and the target temperature interval, the embodiment of the invention also calculates the current opening degree and the opening degree reduction to obtain the first target opening degree which needs to be reached by the throttling device.
In addition, as shown in fig. 9, fig. 9 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. Based on the case of the step shown in fig. 8 described above, step S460 is included, but not limited to, regarding the adjustment of the opening degree of the throttle device to the second target opening degree in step S400 described above.
Step S460, the opening degree of the throttle device is adjusted to the opening degree section lower limit value.
Specifically, when the current temperature of the indoor heat exchanger is greater than the upper limit value of the temperature interval, the second target opening degree in the above step S400 corresponds to the lower limit value of the opening degree interval.
In addition, as shown in fig. 10, fig. 10 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. The upper limit value of the temperature range in fig. 8 can be obtained by, but not limited to, step S510 and step S520.
Step S510, acquiring the air temperature and the air humidity of an air inlet of the indoor heat exchanger, and determining the dew point temperature according to the air temperature and the air humidity;
and step S520, carrying out difference processing on the dew point temperature and a preset deviation value to obtain the upper limit value of the temperature interval.
Specifically, the above-mentioned upper limit value of the temperature zone refers to a temperature value near the dew point temperature, and when the temperature of the indoor heat exchanger approaches the dew point temperature, the dehumidifying effect thereof is deteriorated. Therefore, the embodiment of the invention can acquire the dew point temperature and the preset deviation value, and then perform difference processing on the dew point temperature and the preset deviation value to obtain the upper limit value of the temperature interval, wherein the upper limit value of the temperature interval can be slightly smaller than the dew point temperature or larger than the dew point temperature; if the current temperature of the indoor heat exchanger is greater than the upper limit value of the temperature interval, the dehumidification effect is poor.
The preset deviation value mentioned above may be manually preset.
In addition, as shown in fig. 11, fig. 11 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. Regarding the first target opening degree of the throttle device determined according to the current temperature, the target temperature zone and the current opening degree in the above-described step S200, there is included, but not limited to, step S250.
Step S250, determining that the current opening is the first target opening of the throttling device when the current temperature is within the target temperature range.
Specifically, when the current temperature of the indoor heat exchanger is within the target temperature range, the current dehumidification effect is good, and the air conditioner does not need to be adjusted.
In addition, as shown in fig. 12, fig. 12 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. Regarding the determination of the first target opening degree of the throttle device according to the current temperature, the target temperature zone and the current opening degree in the above-described step S200, there are included, but not limited to, steps S610 and S620.
Step S610, acquiring the air temperature and the air humidity of an air inlet of the indoor heat exchanger, and determining the dew point temperature according to the air temperature and the air humidity;
Step S620, when the dew point temperature is greater than a first preset temperature and the current temperature is less than the dew point temperature, determining a first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening.
Specifically, the first preset temperature mentioned above may be zero or a low temperature close to zero, and thus, the embodiment of the present invention may perform the above-mentioned steps S200, S300 and S400 in a low temperature environment and with the current temperature less than the dew point temperature.
In addition, as shown in fig. 13, fig. 13 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. The control method according to the embodiment of the present invention further includes, but is not limited to, step S700.
Step S700, when the dew point temperature is greater than the first preset temperature and the current temperature is greater than or equal to the dew point temperature, the opening degree of the throttling device is reduced and/or the operation frequency of the compressor is increased.
Specifically, in the case where the low temperature environment and the current temperature is greater than or equal to the dew point temperature, it is indicated that the current temperature is high, it is necessary to reduce the opening degree of the throttle device, or to increase the operating frequency of the compressor, or to simultaneously reduce the opening degree of the throttle device and increase the operating frequency of the compressor.
In addition, as shown in fig. 14, fig. 14 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention. The control method according to the embodiment of the present invention further includes, but is not limited to, step S800.
And step S800, performing defrosting treatment on the indoor heat exchanger according to the current temperature under the condition that the dew point temperature is less than or equal to the first preset temperature.
Specifically, in a low-temperature environment, for example, when the dew point temperature is zero or less than zero, in order to achieve the dehumidification effect, the temperature of the indoor heat exchanger in the embodiment of the invention needs to be less than the dew point temperature, that is, the temperature of the indoor heat exchanger is less than zero, and at this time, the indoor heat exchanger can generate frosting phenomenon. Therefore, in order to solve the frosting situation, the embodiment of the invention can perform frosting treatment on the indoor heat exchanger when frosting is more, such as when the temperature is lower, and the frosting and frosting process is continuously circulated.
The defrosting process may be to turn off the compressor and start the indoor fan to defrost, or to switch to the heating mode to defrost, which is not limited by the embodiment of the present invention.
Based on the control method of the air conditioner in each of the above embodiments, the following respectively proposes the overall embodiments of the control method of the air conditioner of the present invention.
As shown in fig. 15, fig. 15 is an overall flowchart of a control method of an air conditioner according to an embodiment of the present invention. The overall control of the embodiment of the invention is as follows: the dew point temperature is lower than a first constant, and the air conditioner directly operates under a certain specific low-temperature working condition, such as continuous circulation frosting and defrosting process; the dew point temperature is higher than the first constant and lower than the middle temperature of the evaporator, the opening of the electronic expansion valve is directly reduced, and the frequency of the compressor is increased so as to reduce the middle temperature of the evaporator; the dew point temperature is higher than the first constant and higher than the middle temperature of the evaporator, if the middle temperature of the evaporator is lower than the second constant, the opening of the electronic expansion valve is preferentially adjusted, and if the opening cannot be met, the middle temperature of the evaporator is increased by reducing the frequency of the compressor and increasing the rotating speed of the indoor fan; the dew point temperature is higher than the first constant and higher than the temperature of the middle part of the evaporator, the temperature of the middle part of the evaporator is higher than the second constant, the difference value between the dew point temperature and the temperature of the evaporator is lower than the third constant, the opening of the electronic expansion valve is preferentially regulated, and if the difference value cannot be met, the difference value is increased by increasing the frequency of the compressor and reducing the rotating speed of the indoor fan.
Specifically, the overall flow in fig. 15 includes the following steps:
starting the air conditioner and operating in a preset state; detecting inlet air dry bulb temperature T db Relative humidity RH, evaporator intermediate temperature T 2 And calculate dew point temperature T d 。
If T d ≤C 1 The operation is directly performed under a low-temperature working condition such as a defrosting working condition; if T d ＞C 1 Then judge T 2 And T is d Is of a size of (a) and (b).
If T 2 ≥T d Directly reducing the opening delta K of the electronic expansion valve 1 Increasing the compressor frequency Δfr 1 The method comprises the steps of carrying out a first treatment on the surface of the Run time t 1 After that, the inlet air dry bulb temperature T is returned to be detected db Relative humidity RH, evaporator intermediate temperature T 2 。
If T 2 ＜T d Further judge T 2 And C 2 Is of a size of (a) and (b).
If T 2 ≤C 2 Firstly judging whether the opening of the electronic expansion valve is the allowable maximum value K max The method comprises the steps of carrying out a first treatment on the surface of the If the opening degree is not the maximum opening degree, the electronic expansion valve opening degree delta K is increased 2 Run time t 2 After that, the inlet air dry bulb temperature T is returned to be detected db Relative humidity RH, evaporator intermediate temperature T 2 The method comprises the steps of carrying out a first treatment on the surface of the If the opening degree is the maximum opening degree, the compressor frequency Deltafr is reduced 2 And increasing fan speed ΔN 1 Run time t 3 After that, the inlet air dry bulb temperature T is returned to be detected db Relative humidity RH, evaporator intermediate temperature T 2 ；
If T 2 ＞C 2 Then compare T d And T is 2 And C 2 Is of a size of (2); if T d -T 2 ≥C 3 The air conditioner is kept to operate in a preset state; if T d -T 2 ＜C 3 Further judging whether the opening of the electronic expansion valve is the allowable minimum value K min The method comprises the steps of carrying out a first treatment on the surface of the If the opening degree is not the minimum opening degree, the electronic expansion valve opening degree delta K is reduced 3 The method comprises the steps of carrying out a first treatment on the surface of the Run time t 4 After that, the inlet air dry bulb temperature T is returned to be detected db Relative humidity RH, evaporator intermediate temperature T 2 The method comprises the steps of carrying out a first treatment on the surface of the If the opening degree is the minimum opening degree, the compressor frequency Deltafr is reduced 3 And increasing fan speed ΔN 2 Run time t 5 After that, the inlet air dry bulb temperature T is returned to be detected db Relative humidity RH, evaporator intermediate temperature T 2 。
Wherein T is db Characterizing inlet air dry bulb temperature; t (T) 2 Characterizing the temperature in the middle of the evaporator, which refers to the temperature of the refrigerant at the middle position of the length of the evaporation main pipe in the evaporator; t (T) d Characterizing the air dew point temperature; RH characterizes inlet air relative humidity; Δk represents the amount by which the electronic expansion valve opening increases or decreases; k (K) max Characterizing the maximum allowable value of the opening of the electronic expansion valve; k (K) min Representing the minimum allowable value of the opening of the electronic expansion valve; Δfr characterizes the amount by which the compressor frequency increases or decreases; Δn represents the amount by which the rotational speed of the indoor fan increases or decreases; c (C) 1 A first constant for determining whether the air dew point temperature is too low; c (C) 2 The second constant is used for judging whether the temperature of the middle part of the evaporator is too low; c (C) 3 The third constant is used for judging whether the air dew point temperature and the middle temperature of the evaporator meet a certain difference value or not; t is t 1 、t 2 、t 3 、t 4 And t 5 Respectively time constants.
Based on the above-described control method of the air conditioner, various embodiments of the controller, the air conditioner, and the computer-readable storage medium of the present invention are respectively presented below.
In addition, one embodiment of the present invention provides a controller including: a processor, a memory, and a computer program stored on the memory and executable on the processor.
The processor and the memory may be connected by a bus or other means.
It should be noted that, the controller in this embodiment may include a processor and a memory in the embodiment shown in fig. 1, which belong to the same inventive concept, so that the processor and the memory have the same implementation principle and beneficial effects, which are not described in detail herein.
The non-transitory software programs and instructions required to implement the control method of an air conditioner of the above-described embodiments are stored in the memory, and when executed by the processor, the control method of an air conditioner of the above-described embodiments is performed.
According to the technical scheme of the embodiment of the invention, in order to realize the temperature adjustment of the indoor heat exchanger in the dehumidification mode, the embodiment of the invention does not directly adjust the operation frequency of the compressor, but preferentially adjusts the opening of the throttling device. Specifically, firstly, the embodiment of the invention obtains the current temperature of the indoor heat exchanger, the opening adjustment interval of the throttling device and the current opening, and then determines the first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening; if the first target opening is located in the opening adjustment interval, namely that the embodiment of the invention can meet the temperature adjustment of the indoor heat exchanger only by adjusting the opening of the throttling device, the embodiment of the invention can adjust the opening of the throttling device to the first target opening without adjusting the running frequency of the compressor; if the first target opening is located outside the opening adjustment interval, that is, it indicates that the embodiment of the invention needs to adjust the rotation speed of the indoor fan and/or the operation frequency of the compressor in addition to the opening of the throttling device to meet the temperature adjustment of the indoor heat exchanger, then the embodiment of the invention can preferentially adjust the opening of the throttling device to the second target opening, and also can properly adjust the rotation speed of the indoor fan to the target rotation speed and/or adjust the operation frequency of the compressor to the target operation frequency. Therefore, when the temperature of the indoor heat exchanger needs to be increased in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is subjected to frequency reduction, so that the problem that the dehumidification effect is poor due to direct frequency reduction of the compressor can be avoided; in addition, when the temperature of the indoor heat exchanger needs to be reduced in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is increased, so that the problem of energy consumption increase caused by directly increasing the frequency of the compressor can be avoided.
It should be noted that, since the controller according to the embodiment of the present invention is capable of executing the control method of the air conditioner according to the above embodiment, specific implementation and technical effects of the controller according to the embodiment of the present invention may refer to specific implementation and technical effects of the control method of the air conditioner according to any one of the above embodiments.
In addition, an embodiment of the invention also provides an air conditioner, which comprises the controller.
According to the technical scheme of the embodiment of the invention, in order to realize the temperature adjustment of the indoor heat exchanger in the dehumidification mode, the embodiment of the invention does not directly adjust the operation frequency of the compressor, but preferentially adjusts the opening of the throttling device. Specifically, firstly, the embodiment of the invention obtains the current temperature of the indoor heat exchanger, the opening adjustment interval of the throttling device and the current opening, and then determines the first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening; if the first target opening is located in the opening adjustment interval, namely that the embodiment of the invention can meet the temperature adjustment of the indoor heat exchanger only by adjusting the opening of the throttling device, the embodiment of the invention can adjust the opening of the throttling device to the first target opening without adjusting the running frequency of the compressor; if the first target opening is located outside the opening adjustment interval, that is, it indicates that the embodiment of the invention needs to adjust the rotation speed of the indoor fan and/or the operation frequency of the compressor in addition to the opening of the throttling device to meet the temperature adjustment of the indoor heat exchanger, then the embodiment of the invention can preferentially adjust the opening of the throttling device to the second target opening, and also can properly adjust the rotation speed of the indoor fan to the target rotation speed and/or adjust the operation frequency of the compressor to the target operation frequency. Therefore, when the temperature of the indoor heat exchanger needs to be increased in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is subjected to frequency reduction, so that the problem that the dehumidification effect is poor due to direct frequency reduction of the compressor can be avoided; in addition, when the temperature of the indoor heat exchanger needs to be reduced in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is increased, so that the problem of energy consumption increase caused by directly increasing the frequency of the compressor can be avoided.
It should be noted that, since the air conditioner according to the embodiment of the present invention has the controller according to the above embodiment, and the controller according to the above embodiment is capable of executing the control method of the air conditioner according to the above embodiment, specific implementation and technical effects of the air conditioner according to the embodiment of the present invention may refer to specific implementation and technical effects of the control method of the air conditioner according to any of the above embodiments.
In addition, an embodiment of the present invention also provides a computer-readable storage medium storing computer-executable instructions for performing the above-described control method of an air conditioner. Illustratively, the method steps in fig. 3-15 described above are performed.
According to the technical scheme of the embodiment of the invention, in order to realize the temperature adjustment of the indoor heat exchanger in the dehumidification mode, the embodiment of the invention does not directly adjust the operation frequency of the compressor, but preferentially adjusts the opening of the throttling device. Specifically, firstly, the embodiment of the invention obtains the current temperature of the indoor heat exchanger, the opening adjustment interval of the throttling device and the current opening, and then determines the first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening; if the first target opening is located in the opening adjustment interval, namely that the embodiment of the invention can meet the temperature adjustment of the indoor heat exchanger only by adjusting the opening of the throttling device, the embodiment of the invention can adjust the opening of the throttling device to the first target opening without adjusting the running frequency of the compressor; if the first target opening is located outside the opening adjustment interval, that is, it indicates that the embodiment of the invention needs to adjust the rotation speed of the indoor fan and/or the operation frequency of the compressor in addition to the opening of the throttling device to meet the temperature adjustment of the indoor heat exchanger, then the embodiment of the invention can preferentially adjust the opening of the throttling device to the second target opening, and also can properly adjust the rotation speed of the indoor fan to the target rotation speed and/or adjust the operation frequency of the compressor to the target operation frequency. Therefore, when the temperature of the indoor heat exchanger needs to be increased in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is subjected to frequency reduction, so that the problem that the dehumidification effect is poor due to direct frequency reduction of the compressor can be avoided; in addition, when the temperature of the indoor heat exchanger needs to be reduced in the dehumidification mode, the opening degree of the throttling device can be adjusted first, and when the temperature cannot be met, the rotating speed of the indoor fan is adjusted and/or the compressor is increased, so that the problem of energy consumption increase caused by directly increasing the frequency of the compressor can be avoided.
It should be noted that, since the computer readable storage medium according to the embodiment of the present invention can implement the control method of the air conditioner according to the above embodiment, reference may be made to the specific implementation and technical effects of the control method of the air conditioner according to any one of the above embodiments.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and may include any information delivery media.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit and scope of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.
Claims (13)
1. A control method of an air conditioner, characterized in that the air conditioner is provided with a throttling device; the method comprises the following steps:
in a dehumidification mode, acquiring a current temperature and target temperature interval of an indoor heat exchanger, an opening adjustment interval of the throttling device and a current opening;
determining a first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening;
when the first target opening is located in the opening adjustment section, adjusting the opening of the throttling device to the first target opening;
and when the first target opening is positioned outside the opening adjustment interval, determining a second target opening of the throttling device, determining a target rotating speed of an indoor fan and/or a target operating frequency of a compressor, adjusting the opening of the throttling device to the second target opening, and adjusting the rotating speed of the indoor fan to the target rotating speed and/or the operating frequency of the compressor to the target operating frequency, wherein the second target opening is positioned in the opening adjustment interval.
2. The method of claim 1, wherein the adjusting the opening of the throttle device to the second target opening includes one of:
adjusting the opening of the throttling device to an opening interval upper limit value of the opening adjustment interval;
and adjusting the opening of the throttling device to an opening section lower limit value of the opening adjustment section.
3. The method of claim 1, wherein in the case of adjusting the rotational speed of the indoor fan to the target rotational speed and the operating frequency of the compressor to the target operating frequency, the adjusting the rotational speed of the indoor fan to the target rotational speed and the operating frequency of the compressor to the target operating frequency comprises one of:
when the second target opening is larger than the current opening, acquiring a rotating speed adjusting interval of the indoor fan; the rotating speed of the indoor fan is adjusted to the rotating speed interval upper limit value of the rotating speed adjusting interval, and then the operating frequency of the compressor is adjusted to the target operating frequency;
when the second target opening is smaller than the current opening, acquiring a rotating speed adjusting interval of the indoor fan; and adjusting the rotating speed of the indoor fan to the lower limit value of the rotating speed interval of the rotating speed adjusting interval, and adjusting the operating frequency of the compressor to the target operating frequency.
4. The method according to claim 1, wherein the target temperature interval is provided with a temperature interval lower limit value; the determining the first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening comprises the following steps:
determining an opening degree increase amount of the throttling device under the condition that the current temperature is less than or equal to the lower limit value of the temperature interval;
and determining a first target opening degree of the throttling device according to the current opening degree and the opening degree increasing amount.
5. The method according to claim 1, wherein the target temperature interval is provided with a temperature interval upper limit value; the determining the first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening comprises the following steps:
determining an opening degree reduction amount of the throttling device under the condition that the current temperature is greater than the upper limit value of the temperature interval;
and determining a first target opening degree of the throttling device according to the current opening degree and the opening degree reduction.
6. The control method according to claim 5, characterized in that the temperature interval upper limit value is obtained by:
Acquiring the air temperature and the air humidity of an air inlet of the indoor heat exchanger, and determining a dew point temperature according to the air temperature and the air humidity;
and carrying out difference processing on the dew point temperature and a preset deviation value to obtain the upper limit value of the temperature interval.
7. The method of claim 1, wherein the determining a first target opening of the throttle device based on the current temperature, the target temperature interval, and the current opening comprises:
and determining that the current opening is a first target opening of the throttling device when the current temperature is within the target temperature interval.
8. The method according to any one of claims 1 to 5 and 7, characterized in that before the step of determining the first target opening degree of the throttle device from the current temperature, the target temperature interval and the current opening degree, it comprises:
acquiring the air temperature and the air humidity of an air inlet of the indoor heat exchanger, and determining a dew point temperature according to the air temperature and the air humidity;
and determining a first target opening of the throttling device according to the current temperature, the target temperature interval and the current opening under the condition that the dew point temperature is larger than a first preset temperature and the current temperature is smaller than the dew point temperature.
9. The method as recited in claim 8, further comprising:
and in the case that the dew point temperature is greater than the first preset temperature and the current temperature is greater than or equal to the dew point temperature, reducing the opening degree of the throttling device and/or increasing the operating frequency of the compressor.
10. The method as recited in claim 8, further comprising:
and defrosting the indoor heat exchanger according to the current temperature under the condition that the dew point temperature is smaller than or equal to the first preset temperature.
11. A controller, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the control method of the air conditioner according to any one of claims 1 to 10 when the computer program is executed.
12. An air conditioner, characterized in that: comprising a controller as claimed in claim 11.
13. A computer-readable storage medium, characterized by: computer-executable instructions for performing the control method of an air conditioner according to any one of claims 1 to 10 are stored.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210574468.6A CN117168025A (en) | 2022-05-25 | 2022-05-25 | Air conditioner control method, controller, air conditioner and storage medium |
| PCT/CN2023/078753 WO2023226501A1 (en) | 2022-05-25 | 2023-02-28 | Control method for air conditioner, controller, air conditioner and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210574468.6A CN117168025A (en) | 2022-05-25 | 2022-05-25 | Air conditioner control method, controller, air conditioner and storage medium |
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| CN117168025A true CN117168025A (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210574468.6A Pending CN117168025A (en) | 2022-05-25 | 2022-05-25 | Air conditioner control method, controller, air conditioner and storage medium |
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| CN (1) | CN117168025A (en) |
| WO (1) | WO2023226501A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006170503A (en) * | 2004-12-15 | 2006-06-29 | Hitachi Home & Life Solutions Inc | Air conditioner |
| CN102914030B (en) * | 2012-09-28 | 2015-04-15 | 广东美的制冷设备有限公司 | Thermostat dehumidification control method of air conditioner |
| JP6573507B2 (en) * | 2015-08-28 | 2019-09-11 | シャープ株式会社 | Air conditioner |
| CN106247552B (en) * | 2016-08-12 | 2019-05-31 | 青岛海尔空调器有限总公司 | It is a kind of for the control method of air-conditioning, device and air-conditioning |
| CN107436021B (en) * | 2017-09-12 | 2019-12-10 | 广东美的制冷设备有限公司 | air conditioner and humidity control method and device thereof |
| CN107676921B (en) * | 2017-09-12 | 2020-02-04 | 广东美的制冷设备有限公司 | Air conditioner and humidity control method and device thereof |
| CN114151943B (en) * | 2021-12-06 | 2022-10-28 | 珠海格力电器股份有限公司 | Dehumidification control method and device of air conditioner, storage medium and air conditioner |
-
2022
- 2022-05-25 CN CN202210574468.6A patent/CN117168025A/en active Pending
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- 2023-02-28 WO PCT/CN2023/078753 patent/WO2023226501A1/en unknown
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| WO2023226501A1 (en) | 2023-11-30 |
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