CN110986326A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN110986326A CN110986326A CN201911285854.8A CN201911285854A CN110986326A CN 110986326 A CN110986326 A CN 110986326A CN 201911285854 A CN201911285854 A CN 201911285854A CN 110986326 A CN110986326 A CN 110986326A
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000005057 refrigeration Methods 0.000 claims abstract description 17
- 230000005611 electricity Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 11
- 238000005070 sampling Methods 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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
- 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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention belongs to the technical field of air conditioners and aims to solve the problem of electricity consumption in the refrigeration process of the existing air conditioner. To this end, the present invention provides an air conditioner and a control method thereof, the control method of the air conditioner including: when the air conditioner operates in a refrigerating mode and is in a set mode, acquiring the operation duration of the air conditioner in the set mode; judging whether the running time reaches a set time; if the running time reaches the set time, further acquiring the indoor environment temperature and the coil temperature of the indoor unit of the air conditioner; selectively closing a fan of the indoor unit according to the indoor environment temperature and the coil temperature of the indoor unit; the setting mode is a mode that a fan and a compressor of an outdoor unit of the air conditioner are both closed and a fan of an indoor unit of the air conditioner is opened. The invention can close the fan of the indoor unit at proper time, thereby saving electric energy and ensuring the refrigeration effect of the air conditioner.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly provides an air conditioner and a control method thereof.
Background
The air conditioner is a commonly used indoor environment temperature adjusting device at present, and comprises an indoor unit and an outdoor unit, wherein the indoor unit and the outdoor unit can form a closed refrigerant circulating system, and the air conditioner can refrigerate to reduce the indoor environment temperature through heat absorption of a refrigerant in the indoor unit and heat release of the refrigerant in the outdoor unit. In the process of refrigerating the air conditioner, a fan of an indoor unit of the air conditioner, a fan of an outdoor unit and a compressor are all started, the compressor stops running after the target temperature is reached, the indoor unit still runs, and the air conditioner still consumes very much electricity in the process of refrigerating.
Therefore, there is a need in the art for a new control method of an air conditioner and a corresponding air conditioner to solve the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem of electricity consumption in the refrigeration process of the existing air conditioner, the present invention provides a control method of an air conditioner, which comprises: when the air conditioner operates in a refrigerating mode and is in a set mode, acquiring the operation duration of the air conditioner in the set mode; judging whether the running time reaches a set time; if the running time reaches the set time, further acquiring the indoor environment temperature and the coil temperature of the indoor unit of the air conditioner; selectively closing a fan of the indoor unit according to the indoor environment temperature and the coil temperature of the indoor unit; the setting mode is a mode that a fan and a compressor of an outdoor unit of the air conditioner are both closed and a fan of an indoor unit of the air conditioner is opened.
In a preferred embodiment of the method for controlling an air conditioner, the step of selectively turning off the fan of the indoor unit according to the indoor ambient temperature and the coil temperature of the indoor unit includes: calculating the difference between the coil temperature of the indoor unit and the indoor environment temperature; and selectively closing the fan of the indoor unit according to the difference between the coil temperature of the indoor unit and the indoor environment temperature.
In a preferred embodiment of the method for controlling an air conditioner, the step of selectively turning off the fan of the indoor unit according to a difference between a coil temperature of the indoor unit and an indoor ambient temperature includes: and if the difference value between the coil temperature of the indoor unit and the indoor environment temperature is greater than or equal to a first preset value, closing the fan of the indoor unit.
In a preferred embodiment of the method for controlling an air conditioner, the step of selectively turning off the fan of the indoor unit according to a difference between a coil temperature of the indoor unit and an indoor ambient temperature further includes: and if the difference value between the coil temperature of the indoor unit and the indoor environment temperature is less than a first preset value, keeping a fan of the indoor unit on.
In a preferred embodiment of the method for controlling an air conditioner, the step of selectively turning off the fan of the indoor unit according to the indoor ambient temperature and the coil temperature of the indoor unit includes: calculating the ratio of the coil temperature of the indoor unit to the indoor environment temperature; and selectively closing the fan of the indoor unit according to the ratio of the coil temperature of the indoor unit to the indoor environment temperature.
In a preferred embodiment of the method for controlling an air conditioner, the step of selectively turning off the fan of the indoor unit according to the indoor ambient temperature and the coil temperature of the indoor unit includes: comparing the indoor environment temperature with the coil temperature of the indoor unit; and selectively closing the fan of the indoor unit according to the comparison result of the indoor environment temperature and the coil temperature of the indoor unit.
In a preferred embodiment of the control method of the air conditioner, the control method further includes: acquiring the indoor environment temperature; when the indoor environment temperature is greater than or equal to the set temperature, starting a fan of the indoor unit, starting a fan of the outdoor unit, and starting a compressor to start the air conditioner to perform refrigeration operation; when a fan of the indoor unit, a fan of the outdoor unit and a compressor are all started, further acquiring the indoor environment temperature; and when the indoor environment temperature is lower than the set temperature, the air conditioner enters a set mode.
In a preferred embodiment of the control method of the air conditioner, the control method further includes: acquiring the indoor environment temperature; when the indoor environment temperature is greater than or equal to the set temperature, starting a fan of the indoor unit, starting a fan of the outdoor unit, and starting a compressor to start the air conditioner to perform refrigeration operation; when a fan of the indoor unit, a fan of the outdoor unit and a compressor are all started, further acquiring the indoor environment temperature; calculating the difference value between the set temperature and the indoor environment temperature; and when the difference value between the set temperature and the indoor environment temperature reaches a second preset value, the air conditioner enters a set mode.
In a preferred embodiment of the method for controlling an air conditioner, the step of turning on a fan of an indoor unit when the indoor ambient temperature is greater than or equal to the set temperature includes: when the difference value between the indoor environment temperature and the set temperature is greater than or equal to a third preset value, starting a fan of the indoor unit at a high wind speed gear; when the difference value between the indoor environment temperature and the set temperature is smaller than a third preset value and larger than or equal to a fourth preset value, starting a fan of the indoor unit at a medium wind speed gear; when the difference value between the indoor environment temperature and the set temperature is smaller than a fourth preset value, starting a fan of the indoor unit at a low wind speed level; wherein the third preset value is greater than the fourth preset value.
In another aspect, the present invention also provides an air conditioner including a controller configured to be able to perform any one of the control methods as described above.
As can be understood by those skilled in the art, in a preferred technical solution of the present invention, the control method of the air conditioner includes further obtaining an indoor environment temperature and a coil temperature of an indoor unit of the air conditioner after an operation duration of the air conditioner in a cooling operation and in a setting mode reaches a predetermined duration, and selectively turning off a fan of the indoor unit according to the indoor environment temperature and the coil temperature of the indoor unit. After the fans of the compressor and the outdoor unit are shut down, the fans of the indoor unit are not closed immediately, so that the energy of the coil pipe of the indoor unit can be fully dissipated, the phenomenon that the temperature of the coil pipe of the indoor unit and the indoor environment temperature are inaccurate due to the fact that the energy which is not dissipated by the coil pipe is retained in the indoor unit is avoided, and therefore when the indoor environment temperature is too high, the acquired indoor environment temperature is too low, and the refrigerating operation of the air conditioner is influenced. After the fans of the compressor and the outdoor unit are stopped for a period of time, the fans of the indoor unit are selectively turned off according to the indoor environment temperature and the coil temperature of the indoor unit, so that the set time can be prevented from being reached, but when the coil still has the energy which is not dissipated, the fans of the indoor unit are turned off, the energy of the coil is further fully dissipated, and the energy of the coil is prevented from being wasted.
Further, the step of selectively turning off the fan of the indoor unit according to the difference between the coil temperature of the indoor unit and the indoor environment temperature includes: if the difference value between the coil temperature of the indoor unit and the indoor environment temperature is larger than or equal to a first preset value, the fan of the indoor unit is turned off, and through the arrangement, the influence caused by the fact that the acquired indoor environment temperature is usually lower than an actual temperature value due to sampling errors of a sensor or sampling errors of a computer board is avoided to a certain extent, so that the fan of the indoor unit is turned off when the actual indoor environment temperature is lower than the coil temperature of the actual indoor unit is ensured as far as possible.
Further, the control method also comprises the steps of obtaining the indoor environment temperature; when the indoor environment temperature is greater than or equal to the set temperature, starting a fan of the indoor unit, starting a fan of the outdoor unit, and starting a compressor to start the air conditioner to perform refrigeration operation; when a fan of the indoor unit, a fan of the outdoor unit and a compressor are all started, further acquiring the indoor environment temperature; when the indoor environment temperature is lower than the set temperature, the air conditioner enters the set mode, through the arrangement, the air conditioner can start the refrigeration operation when the refrigeration operation is necessary, and does not perform the refrigeration operation when the refrigeration operation is not needed, and the air conditioner can close the fan and the compressor of the outdoor unit at a proper time, so that the electric energy is further saved, and meanwhile, the indoor temperature can be kept in a certain proper range.
Further, the control method further comprises: acquiring the indoor environment temperature; when the indoor environment temperature is greater than or equal to the set temperature, starting a fan of the indoor unit, starting a fan of the outdoor unit, and starting a compressor to start the air conditioner to perform refrigeration operation; when a fan of the indoor unit, a fan of the outdoor unit and a compressor are all started, further acquiring the indoor environment temperature; calculating the difference value between the set temperature and the indoor environment temperature; when the difference value between the set temperature and the indoor environment temperature reaches a second preset value, the air conditioner is enabled to enter a set mode, through the setting, the air conditioner can start refrigerating operation only when refrigerating operation is necessary, and does not perform refrigerating operation when refrigerating operation is not needed, and the air conditioner can close a fan and a compressor of an outdoor unit at a proper time, so that electric energy is further saved, and meanwhile, the indoor temperature can be kept within a certain proper range.
Further, when the indoor environment temperature is greater than or equal to the set temperature, the fan of the indoor unit is turned on.
Drawings
Fig. 1 is a flowchart of an embodiment of a control method of an air conditioner of the present invention;
fig. 2 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in addition, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Based on the problem of electricity consumption in the refrigeration process of the existing air conditioner pointed out by the background art, the invention provides the air conditioner, aiming at enabling a fan of an indoor unit to be turned off at a proper time, so that electric energy can be saved, and the refrigeration effect of the air conditioner can be ensured.
The air conditioner comprises an indoor unit, an outdoor unit, a compressor and a controller, and of course, the air conditioner also comprises an indoor environment temperature sensor and an indoor unit coil temperature sensor which are electrically connected with the controller, wherein the indoor environment temperature sensor can acquire the indoor environment temperature, the indoor unit coil temperature sensor can acquire the coil temperature of the indoor unit, and the controller is configured to execute a control method which is described later.
Specifically, as shown in fig. 1, the control method of the air conditioner includes: when the air conditioner operates in a refrigerating mode and is in a set mode, acquiring the operation duration of the air conditioner in the set mode; judging whether the running time reaches a set time; if the running time reaches the set time, further acquiring the indoor environment temperature and the coil temperature of the indoor unit of the air conditioner; selectively closing a fan of the indoor unit according to the indoor environment temperature and the coil temperature of the indoor unit; the setting mode is a mode that a fan and a compressor of an outdoor unit of the air conditioner are both closed and a fan of an indoor unit of the air conditioner is opened. In the above description, the "further acquiring the indoor ambient temperature and the coil temperature of the indoor unit of the air conditioner" may be to acquire the indoor ambient temperature and the coil temperature of the indoor unit at the same time, or to acquire the indoor ambient temperature first and then acquire the coil temperature of the indoor unit, or to acquire the coil temperature of the indoor unit first and then acquire the indoor ambient temperature.
In one possible case, the step of selectively turning off the fan of the indoor unit according to the indoor ambient temperature and the coil temperature of the indoor unit comprises: calculating the difference between the coil temperature of the indoor unit and the indoor environment temperature; and selectively closing the fan of the indoor unit according to the difference between the coil temperature of the indoor unit and the indoor environment temperature. Specifically, the step of selectively turning off the fan of the indoor unit according to the difference between the coil temperature of the indoor unit and the indoor environment temperature includes: if the difference value between the coil temperature of the indoor unit and the indoor environment temperature is larger than or equal to the first preset value, the fan of the indoor unit is turned off, namely, when the difference value between the coil temperature of the indoor unit and the indoor environment temperature is larger than or equal to the first preset value, the indoor environment temperature can meet the use requirement of a user, and the fan of the indoor unit can be turned off at the moment, so that electric energy is saved. The step of selectively turning off the fan of the indoor unit according to the difference between the coil temperature of the indoor unit and the indoor environment temperature further comprises the following steps: if the difference between the coil temperature of the indoor unit and the indoor environment temperature is smaller than a first preset value, the fan of the indoor unit is kept on, that is, when the difference between the coil temperature of the indoor unit and the indoor environment temperature is smaller than the first preset value, it is indicated that the indoor environment temperature cannot meet the use requirement of a user at the moment, the fan of the indoor unit is kept on at the moment, and at least the current indoor environment temperature is maintained. In one possible scenario, the first preset value is 2 degrees celsius. Of course, the first preset value can be other temperature values, and those skilled in the art can flexibly set the specific value of the first preset value in practical applications, and such adjustment and change of the specific value of the first preset value do not limit the present invention, and should be limited within the protection scope of the present invention. The first preset value is set to avoid the influence caused by the fact that the acquired indoor environment temperature is usually lower than the actual temperature value due to sampling errors of a sensor or sampling errors of a computer board to a certain extent, so that the condition that the fan of the indoor unit is turned off when the actual value of the indoor environment temperature is lower than the actual value of the coil temperature of the indoor unit is ensured as far as possible.
In another possible case, the step of selectively turning off the fan of the indoor unit according to the indoor ambient temperature and the coil temperature of the indoor unit comprises: calculating the ratio of the coil temperature of the indoor unit to the indoor environment temperature; and selectively closing the fan of the indoor unit according to the ratio of the coil temperature of the indoor unit to the indoor environment temperature. Specifically, the step of selectively turning off the fan of the indoor unit according to the ratio of the coil temperature of the indoor unit to the indoor environment temperature includes: if the ratio of the coil temperature of the indoor unit to the indoor environment temperature is greater than the first preset value, the fan of the indoor unit is turned off, namely, when the ratio of the coil temperature of the indoor unit to the indoor environment temperature is greater than the first preset value, the indoor environment temperature can meet the use requirements of users, and the fan of the indoor unit can be turned off at the moment, so that electric energy is saved. Further, the step of selectively turning off the fan of the indoor unit according to the ratio of the coil temperature of the indoor unit to the indoor environment temperature further includes: if the ratio of the coil temperature of the indoor unit to the indoor environment temperature is smaller than or equal to a first preset value, the fan of the indoor unit is kept on, that is, when the ratio of the coil temperature of the indoor unit to the indoor environment temperature is smaller than or equal to the first preset value, it is indicated that the indoor environment temperature cannot meet the use requirement of a user at the moment, and the fan of the indoor unit is kept on at the moment, so that the current indoor environment temperature is at least maintained. In a possible situation, the first preset value is 1.1, and the first preset value can also be other temperature values, and a person skilled in the art can flexibly set the specific value of the first preset value in practical applications, and such adjustment and change of the specific value of the first preset value do not limit the present invention, and should be limited within the scope of the present invention. The first preset value is set to avoid the influence caused by the fact that the acquired indoor environment temperature is usually lower than the actual temperature value due to sampling errors of a sensor or sampling errors of a computer board to a certain extent, so that the condition that the fan of the indoor unit is turned off when the actual value of the indoor environment temperature is lower than the actual value of the coil temperature of the indoor unit is ensured as far as possible.
In yet another possible scenario, the step of selectively turning off the fan of the indoor unit according to the indoor ambient temperature and the coil temperature of the indoor unit comprises: comparing the indoor environment temperature with the coil temperature of the indoor unit; and selectively closing the fan of the indoor unit according to the comparison result of the indoor environment temperature and the coil temperature of the indoor unit. Specifically, the step of selectively turning off the fan of the indoor unit according to the comparison result of the indoor environment temperature and the coil temperature of the indoor unit comprises the following steps: the indoor environment temperature is compared with the coil pipe temperature of the indoor unit, if the indoor environment temperature is smaller than the coil pipe temperature of the indoor unit, the fan of the indoor unit is turned off, namely, when the indoor environment temperature is smaller than the coil pipe temperature of the indoor unit, the indoor environment temperature can meet the use requirement of a user, and the fan of the indoor unit can be turned off at the moment, so that electric energy is saved. The step of selectively turning off the fan of the indoor unit according to the comparison result of the indoor environment temperature and the coil temperature of the indoor unit further comprises the following steps: if the indoor environment temperature is greater than or equal to the coil temperature of the indoor unit, the fan of the indoor unit is kept on, that is, when the indoor environment temperature is greater than or equal to the coil temperature of the indoor unit, it is indicated that the indoor environment temperature cannot meet the use requirement of the user, and the fan of the indoor unit should be kept on at this time, so that at least the current indoor environment temperature is maintained.
Preferably, the control method of the present invention further comprises: acquiring the indoor environment temperature; when the indoor environment temperature is greater than or equal to the set temperature, starting a fan of the indoor unit, starting a fan of the outdoor unit, and starting a compressor to start the air conditioner to perform refrigeration operation; when a fan of the indoor unit, a fan of the outdoor unit and a compressor are all started, further acquiring the indoor environment temperature; and when the indoor environment temperature is lower than the set temperature, the air conditioner enters a set mode. That is to say, when the indoor environment temperature is less than the set temperature, the fan of the indoor unit, the fan of the outdoor unit and the compressor are kept in the closed state, when the indoor environment temperature is greater than or equal to the set temperature, the air conditioner starts to perform the cooling operation, in the cooling operation process, the indoor environment temperature is continuously reduced, during the cooling operation of the air conditioner, the indoor environment temperature is obtained, when the indoor environment temperature is less than the set temperature, both the fan of the outdoor unit of the air conditioner and the compressor are closed, the fan of the indoor unit is kept in the open state, and when the indoor environment temperature is greater than or equal to the set temperature, the fan of the indoor unit, the fan of the outdoor unit and the compressor are kept. It should be noted that, the above-mentioned "starting the fan of the indoor unit, starting the fan of the outdoor unit, and starting the compressor" may be the three starting at the same time, or may be the starting in sequence. The set temperature may be a temperature that the user sets to be within a desired indoor environment, or may be a reasonable set temperature that the controller of the air conditioner estimates based on the air temperature at the current date, and the "set temperature" is not limited to the temperature that the user sets to be within the desired indoor environment. Besides, the fans of the indoor unit and the outdoor unit and the compressor can be turned on by a device for controlling the air conditioner through a remote controller of the air conditioner, so that the air conditioner starts to perform cooling operation.
Preferably, the control method of the present invention further comprises: acquiring the indoor environment temperature; when the indoor environment temperature is greater than or equal to the set temperature, starting a fan of the indoor unit, starting a fan of the outdoor unit, and starting a compressor to start the air conditioner to perform refrigeration operation; when a fan of the indoor unit, a fan of the outdoor unit and a compressor are all started, further acquiring the indoor environment temperature; calculating the difference value between the set temperature and the indoor environment temperature; and when the difference value between the set temperature and the indoor environment temperature reaches a second preset value, the air conditioner enters a set mode. That is to say, when the indoor environment temperature is greater than or equal to the set temperature, the air conditioner starts the cooling operation, the indoor environment temperature continuously drops in the cooling operation process, during the cooling operation of the air conditioner, the indoor environment temperature is acquired, the difference value between the set temperature and the indoor environment temperature is calculated, when the difference value between the set temperature and the indoor environment temperature reaches the second preset value, both the fan and the compressor of the outdoor unit of the air conditioner are turned off, and the fan of the indoor unit is kept in an on state. In one possible case, the second preset value is greater than or equal to 1 degree celsius and less than or equal to 2 degrees celsius. Of course, the second preset value can also be a specific value in other ranges, and a person skilled in the art can flexibly set the specific value of the second preset value in practical applications, and such adjustment and change of the specific value of the second preset value do not limit the present invention, and should be limited within the protection scope of the present invention. It should be noted that, the above-mentioned "starting the fan of the indoor unit, starting the fan of the outdoor unit, and starting the compressor" may be the three starting at the same time, or may be the starting in sequence. The set temperature may be a temperature that the user sets to be within a desired indoor environment, or may be a reasonable set temperature that the controller of the air conditioner estimates based on the air temperature at the current date, and the "set temperature" is not limited to the temperature that the user sets to be within the desired indoor environment. Besides, the fans of the indoor unit and the outdoor unit and the compressor can be turned on by a device for controlling the air conditioner through a remote controller of the air conditioner, so that the air conditioner starts to perform cooling operation.
Preferably, the step of turning on the fan of the indoor unit when the indoor ambient temperature is greater than or equal to the set temperature includes: calculating the difference value between the indoor environment temperature and the set temperature; when the difference value between the indoor environment temperature and the set temperature is greater than or equal to a third preset value, starting a fan of the indoor unit at a high wind speed gear; when the difference value between the indoor environment temperature and the set temperature is smaller than a third preset value and larger than or equal to a fourth preset value, starting a fan of the indoor unit at a medium wind speed gear; when the difference value between the indoor environment temperature and the set temperature is smaller than a fourth preset value, starting a fan of the indoor unit at a low wind speed level; wherein the third preset value is greater than the fourth preset value. That is, according to the difference between the indoor environment temperature and the set temperature, the gear of the fan of the indoor unit is determined to be turned on. Taking the case that the fan of the indoor unit, the fan of the outdoor unit and the compressor are simultaneously started, when the indoor environment temperature is determined to be greater than or equal to the set temperature, calculating the difference value between the indoor environment temperature and the set temperature, determining which gear the fan of the indoor unit is started at according to the difference value, and then simultaneously starting the fan of the indoor unit, the fan of the outdoor unit and the compressor. In a possible case, the third preset value is 3 degrees celsius, the fourth preset value is 1 degree celsius, of course, the third preset value and the fourth preset value may also be other values, and those skilled in the art may flexibly set specific values of the third preset value and the fourth preset value in practical applications, and such adjustment and change of the specific values of the third preset value and the fourth preset value do not limit the present invention, and should be limited within the protection scope of the present invention.
The technical solution of the present invention is explained below with reference to a specific embodiment.
As shown in fig. 2, first, the air conditioner is in a power-on state, and the blower of the indoor unit, the blower of the outdoor unit, and the compressor of the air conditioner are all in a closed state. Obtaining indoor ambient temperature T1Will be the indoor ambient temperature T1And a set temperature TsComparing if the indoor ambient temperature T1Less than a set temperature TsIn the meantime, the fan of the indoor unit, the fan of the outdoor unit and the compressor are not started, if the indoor environment temperature T is higher than the preset temperature1Greater than or equal to the set temperature TsWhen the fan and the compressor of the outdoor unit are started, the indoor environment temperature T is calculated1And a set temperature TsWhen the indoor ambient temperature T is different1When the difference value with the set temperature Ts is more than or equal to 3 ℃, the fan of the indoor unit is started at a high wind speed gear, the fan and the compressor of the outdoor unit are also started, and when the indoor environment temperature T is higher than or equal to the set temperature Ts1And a set temperature TsWhen the difference value is less than 3 ℃ and more than or equal to 1 ℃, the fan of the indoor unit is started at a medium wind speed gear, the fan and the compressor of the outdoor unit are also started, and when the indoor environment temperature T is higher than the preset temperature T1And a set temperature TsWhen the difference value of the air conditioner is less than 1 ℃, the fan of the indoor unit is started at a low wind speed, the fan and the compressor of the outdoor unit are also started, after the step is executed, the fan of the outdoor unit, the fan and the compressor of the indoor unit are all in an open state, the air conditioner starts to perform refrigerating operation, and the indoor environment temperature is gradually reduced. Further acquiring the indoor environment temperature T in the process of refrigerating operation of the air conditioner2Calculating the set temperature TsTemperature T of indoor environment2A difference of (d); when setting the temperature TsTemperature T of indoor environment2When the difference reaches 1 ℃, the fan and the compressor of the outdoor unit of the air conditioner are both closed, namely, the air conditioner enters a set mode.At the moment, the air conditioner operates in a refrigerating mode, the operating time t of the air conditioner in the setting mode is obtained, and whether the operating time reaches the setting time t or not is judgedsIf the operation time t reaches the set time tsThen further obtaining the indoor ambient temperature T3And coil temperature T of indoor unit of air conditionerpCalculating the coil temperature T of the indoor unitpTemperature T of indoor environment3If the coil temperature T of the indoor unit is different from the value of (1)pTemperature T of indoor environment3If the difference is greater than or equal to 2 ℃, the fan of the indoor unit is turned off. At this time, the fan of the indoor unit, the fan of the outdoor unit, and the compressor are all in a closed state, that is, the air conditioner stops cooling operation, at this time, the control method of the embodiment may be executed again, and the cycle is repeated so that the air conditioner performs cooling operation intermittently, which not only enables the indoor temperature to be kept within a proper temperature range, but also enables the air conditioner to save electric energy.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A control method of an air conditioner, characterized in that the control method comprises:
when the air conditioner operates in a refrigerating mode and is in a set mode, acquiring the operation time of the air conditioner in the set mode;
judging whether the running time reaches a set time;
if the running time reaches the set time, further acquiring the indoor environment temperature and the coil temperature of the indoor unit of the air conditioner;
selectively enabling a fan of the indoor unit to be turned off according to the indoor environment temperature and the coil temperature of the indoor unit;
the setting mode is a mode that a fan and a compressor of an outdoor unit of the air conditioner are both closed and the fan of the indoor unit is opened.
2. The control method according to claim 1, wherein the step of selectively turning off the fan of the indoor unit according to the indoor ambient temperature and the coil temperature of the indoor unit comprises:
calculating the difference value between the coil temperature of the indoor unit and the indoor environment temperature;
and selectively closing the fan of the indoor unit according to the difference between the coil temperature of the indoor unit and the indoor environment temperature.
3. The control method according to claim 2, wherein the step of selectively turning off the fan of the indoor unit according to the difference between the coil temperature of the indoor unit and the indoor ambient temperature comprises:
and if the difference value between the coil temperature of the indoor unit and the indoor environment temperature is greater than or equal to a first preset value, closing the fan of the indoor unit.
4. The control method according to claim 3, wherein the step of selectively turning off the fan of the indoor unit according to the difference between the coil temperature of the indoor unit and the indoor ambient temperature further comprises:
and if the difference value between the coil temperature of the indoor unit and the indoor environment temperature is smaller than the first preset value, keeping a fan of the indoor unit on.
5. The control method according to claim 1, wherein the step of selectively turning off the fan of the indoor unit according to the indoor ambient temperature and the coil temperature of the indoor unit comprises:
calculating the ratio of the coil temperature of the indoor unit to the indoor environment temperature;
and selectively closing the fan of the indoor unit according to the ratio of the coil temperature of the indoor unit to the indoor environment temperature.
6. The control method according to claim 1, wherein the step of selectively turning off the fan of the indoor unit according to the indoor ambient temperature and the coil temperature of the indoor unit comprises:
comparing the indoor ambient temperature to a coil temperature of the indoor unit;
and selectively enabling a fan of the indoor unit to be turned off according to the comparison result of the indoor environment temperature and the coil pipe temperature of the indoor unit.
7. The control method according to claim 1, characterized by further comprising:
acquiring the indoor environment temperature;
when the indoor environment temperature is greater than or equal to a set temperature, starting a fan of the indoor unit, starting a fan of the outdoor unit, and starting the compressor to start the air conditioner to perform refrigeration operation;
when a fan of the indoor unit, a fan of the outdoor unit and the compressor are all started, further acquiring indoor environment temperature;
and when the indoor environment temperature is lower than the set temperature, the air conditioner is enabled to enter the set mode.
8. The control method according to claim 1, characterized by further comprising:
acquiring the indoor environment temperature;
when the indoor environment temperature is greater than or equal to a set temperature, starting a fan of the indoor unit, starting a fan of the outdoor unit, and starting the compressor to start the air conditioner to perform refrigeration operation;
when a fan of the indoor unit, a fan of the outdoor unit and the compressor are all started, further acquiring indoor environment temperature;
calculating a difference value between the set temperature and the indoor environment temperature;
and when the difference value between the set temperature and the indoor environment temperature reaches a second preset value, enabling the air conditioner to enter the set mode.
9. The control method according to claim 7 or 8, wherein the step of turning on the fan of the indoor unit when the indoor ambient temperature is greater than or equal to a set temperature comprises:
when the difference value between the indoor environment temperature and the set temperature is greater than or equal to a third preset value, starting a fan of the indoor unit at a high wind speed gear;
when the difference value between the indoor environment temperature and the set temperature is smaller than the third preset value and larger than or equal to a fourth preset value, enabling a fan of the indoor unit to be started at a medium wind speed gear;
when the difference value between the indoor environment temperature and the set temperature is smaller than the fourth preset value, enabling a fan of the indoor unit to be started at a low wind speed gear;
wherein the third preset value is greater than the fourth preset value.
10. An air conditioner characterized by comprising a controller configured to be able to execute the control method of any one of claims 1 to 9.
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