CN111397095A - Control method of air conditioner and air conditioner - Google Patents
Control method of air conditioner and air conditioner Download PDFInfo
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- CN111397095A CN111397095A CN202010231320.3A CN202010231320A CN111397095A CN 111397095 A CN111397095 A CN 111397095A CN 202010231320 A CN202010231320 A CN 202010231320A CN 111397095 A CN111397095 A CN 111397095A
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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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
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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
- F24F11/62—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
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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
- F24F11/70—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
- 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
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- Combustion & Propulsion (AREA)
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- Signal Processing (AREA)
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- Mathematical Physics (AREA)
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control method of an air conditioner and the air conditioner, wherein the control method of the air conditioner comprises the following steps: s10, controlling the air conditioner to enter a high-temperature sterilization mode, and controlling the air conditioner to perform heating operation; s20, controlling the temperature of the indoor heat exchanger to reach the sterilization temperature; s30, the air conditioner maintains the current state to operate; s40, detecting and judging whether the temperature of the indoor heat exchanger is lower than the sterilization temperature, if so, adjusting the indoor fan and the compressor to improve the temperature of the indoor heat exchanger, controlling the air conditioner to switch to a defrosting mode when the rotating speed of the indoor fan is adjusted to the lowest rotating speed and the frequency of the compressor is adjusted to the maximum frequency, refrigerating the air conditioner to run in the defrosting mode, and switching the air conditioner to a high-temperature sterilization mode to run after defrosting is finished. According to the control method of the air conditioner, the high-temperature sterilization time of the air conditioner is prolonged, defrosting is delayed, the system is prevented from frequently entering a defrosting mode, the high-temperature sterilization effect is improved, and the reliability and the stability of the operation of the system are improved.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to an air conditioner and a control method thereof.
Background
With the increase of health consciousness of people, people have more and more requirements on the functions of air conditioners, for example, the air conditioners in the related art have the functions of humidification, purification and the like. However, in the long-term operation process of the air conditioner, a large amount of bacteria and viruses can be accumulated and hidden on the indoor heat exchanger, and the bacteria and the viruses can not resist high temperature, so that data are displayed at the temperature of more than 56 ℃ for a certain time, some bacteria harmful to human bodies can be killed, and most viruses can be inactivated. Under the low-temperature working condition, the temperature of the outdoor heat exchanger is low and frosting is easy to occur when the air conditioner heats, the heating capacity of the air conditioner can be reduced, and the sterilization effect and the working efficiency of the air conditioner are reduced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a control method of an air conditioner, and the air conditioner can realize defrosting of an outdoor heat exchanger in the high-temperature sterilization process by using the control method, so that the heating capacity and the working efficiency of the air conditioner are ensured, defrosting of the outdoor heat exchanger can be delayed, and the time of a high-temperature sterilization mode of the air conditioner is prolonged, thereby improving the high-temperature sterilization effect of the air conditioner, and simultaneously improving the reliability and the stability of system operation.
The invention also provides an air conditioner working by using the control method.
A control method of an air conditioner according to an embodiment of a first aspect of the present invention includes: s10, controlling the air conditioner to enter a high-temperature sterilization mode and controlling the air conditioner to perform heating operation; s20, controlling the temperature of the indoor heat exchanger to reach the sterilization temperature; s30, the air conditioner keeps running in the current state for a first set time; s40, detecting the temperature of the indoor heat exchanger and judging whether the temperature of the indoor heat exchanger is lower than the sterilization temperature, if the temperature of the indoor heat exchanger is lower than the sterilization temperature, adjusting the rotating speed of an indoor fan and the frequency of a compressor to improve the temperature of the indoor heat exchanger, controlling the air conditioner to be switched to a defrosting mode to defrost the outdoor heat exchanger when the rotating speed of the indoor fan is adjusted to the lowest rotating speed and the frequency of the compressor is adjusted to the maximum frequency, wherein the air conditioner operates in a refrigerating mode in the defrosting mode, and after the defrosting of the outdoor heat exchanger is finished, the air conditioner is switched to a high-temperature sterilization mode to operate.
According to the control method of the air conditioner, defrosting of the outdoor heat exchanger can be realized in the high-temperature sterilization process, the heating capacity and the working efficiency of the air conditioner are ensured, the air conditioner is delayed to enter the defrosting mode of the outdoor heat exchanger by controlling the air conditioner to enter the defrosting mode when the rotating speed of the indoor fan is adjusted to the lowest rotating speed and the frequency of the compressor is adjusted to the maximum frequency, the time of the high-temperature sterilization mode of the air conditioner is prolonged, the frequent entering of the system into the defrosting mode can be avoided, the indoor heat exchanger is maintained in a high-temperature state for a long time, the high-temperature sterilization effect of the air conditioner is improved, and the reliability and the stability of the operation of the system are improved.
According to some embodiments of the present invention, in step S10, the rotation speed of the indoor fan is adjusted to operate at a rotation speed initial value, and the frequency of the compressor is adjusted to operate at a frequency initial value; in step S20, after the indoor fan operates at the initial value of the rotation speed and the initial value of the frequency for the second set time, it is determined whether the temperature of the indoor heat exchanger is lower than the sterilization temperature, and if the temperature of the indoor heat exchanger is lower than the sterilization temperature, the rotation speed of the indoor fan is reduced to make the temperature of the indoor heat exchanger reach the sterilization temperature.
Optionally, in step S10, detecting an outdoor environment temperature and determining whether the outdoor environment temperature is lower than a first set temperature, if the outdoor environment temperature is lower than the first set temperature, setting an initial value of the rotation speed of the indoor fan to be V1, and setting an initial value of the frequency of the compressor to be F1; if the outdoor environment temperature is not lower than the first set temperature, the initial value of the rotating speed of the indoor fan is set to be V2, and the initial value of the frequency of the compressor is set to be F2, wherein V2 is larger than V1, and F2 is larger than F1.
Further, the value range of the first set temperature is 0-8 ℃.
Further, the value range of V1 is 300-800rpm, the value range of F1 is 30-80Hz, the value range of V2 is 600-1200rpm, and the value range of F2 is 30-100 Hz.
According to some optional embodiments of the invention, the second set time is within a range of 10-20 min.
According to some embodiments of the present invention, the minimum rotation speed ranges from 150-600rpm, and the maximum frequency ranges from 60-120 Hz.
According to some embodiments of the present invention, in step S40, if the temperature of the indoor heat exchanger is lower than the sterilization temperature, the rotation speed of the indoor fan is reduced to the minimum rotation speed, and then the frequency of the compressor is increased.
Optionally, in step S40, if the temperature of the indoor heat exchanger is lower than the sterilization temperature, the rotation speed of the indoor fan is gradually decreased, after the rotation speed of the indoor fan is decreased by each step according to a first set step, whether the rotation speed of the indoor fan reaches the lowest rotation speed is detected, and if the rotation speed of the indoor fan does not reach the lowest rotation speed, the operation returns to step S30; and if the rotating speed of the indoor fan reaches the lowest rotating speed, increasing the frequency of the compressor.
Further, the value range of the first set time is 5-15 min.
According to some optional embodiments of the present invention, after the air conditioner performs step S30, it is determined whether the accumulated sterilizing operation time of the air conditioner reaches a third set time, the third set time is counted from the time when step S20 ends to the current time and is stopped when the air conditioner is in the defrosting mode, and if the accumulated sterilizing operation time of the air conditioner does not reach the third set time, step S40 is continued; and if the sterilization accumulated running time of the air conditioner reaches a third set time, exiting the high-temperature sterilization mode.
Further, the value range of the third setting time is 30-130 min.
According to some optional embodiments of the present invention, the frequency of the compressor is gradually increased, after the frequency of the compressor is increased by each step according to a second set step, whether the frequency of the compressor reaches a maximum frequency is detected, and if the frequency of the compressor reaches the maximum frequency, the air conditioner is controlled to switch to the defrosting mode; if the frequency of the compressor does not reach the maximum frequency, executing the following steps: s401, the air conditioner keeps running in the current state for a fourth set time; s402, detecting the temperature of the indoor heat exchanger and judging whether the temperature of the indoor heat exchanger is lower than the sterilization temperature or not, returning to the step S401 if the temperature of the indoor heat exchanger is not lower than the sterilization temperature, and continuously increasing the frequency of the compressor step by step according to a second set step if the temperature of the indoor heat exchanger is lower than the sterilization temperature.
Further, the value range of the fourth set time is 3-15 min.
According to some optional embodiments of the present invention, after the air conditioner performs step S401, it is determined whether the cumulative operating time for sterilization of the air conditioner reaches a third set time, where the third set time is counted from the time when step S20 is finished to the current time and is stopped when the air conditioner is in the defrosting mode, and if the cumulative operating time for sterilization of the air conditioner does not reach the third set time, step S402 is continuously performed; and if the sterilization accumulated running time of the air conditioner reaches a third set time, exiting the high-temperature sterilization mode.
According to some embodiments of the present invention, the air conditioner exits the defrosting mode after operating in the defrosting mode for a fifth set time.
Further, the value range of the fifth set time is 5-20 min.
According to some embodiments of the present invention, after the air conditioner exits the defrosting mode, the air conditioner is controlled to perform a heating operation such that the temperature of the indoor heat exchanger is restored to the sterilization temperature, and then the operation returns to step S30.
Optionally, after the air conditioner exits the defrosting mode, controlling the air conditioner to perform heating operation, adjusting the rotating speed of the indoor fan to a recovery rotating speed and adjusting the frequency of the compressor to a recovery frequency, wherein the recovery rotating speed is greater than the lowest rotating speed, the recovery frequency is less than the maximum frequency, detecting the temperature of the indoor heat exchanger and judging whether the temperature of the indoor heat exchanger is lower than the sterilization temperature, and if the temperature of the indoor heat exchanger is lower than the sterilization temperature, reducing the rotating speed of the indoor fan to a set rotating speed; and if the temperature of the indoor heat exchanger is not lower than the sterilization temperature, returning to the step S30.
Further, the value range of the set rotating speed is 0-300 rpm.
According to some alternative embodiments of the present invention, if the temperature of the indoor heat exchanger is not lower than the sterilization temperature, the air conditioner maintains the current state for a sixth set time before returning to step S30.
Further, the value range of the sixth set time is 0-10 min.
According to some optional embodiments of the invention, the difference between the recovery rotation speed and the lowest rotation speed is in the range of 100-300rpm, and the difference between the maximum frequency and the recovery frequency is in the range of 10-30 Hz.
According to the air conditioner provided with the air inlet and the air outlet, the air conditioner comprises an indoor fan, an indoor heat exchanger, a throttling device, a compressor, an outdoor fan, an outdoor heat exchanger and a control module, wherein the compressor, the outdoor heat exchanger, the throttling device and the indoor heat exchanger are sequentially connected and form a refrigerant cycle, the working mode of the air conditioner comprises a high-temperature sterilization mode, and after the air conditioner enters the high-temperature sterilization mode, the control module controls the air conditioner to work according to the control method provided by the first aspect of the invention.
According to the air conditioner, the air conditioner works according to the control method, defrosting of the outdoor heat exchanger can be realized in the high-temperature sterilization process, the heating capacity and the working efficiency of the air conditioner are guaranteed, the air conditioner is delayed to enter a defrosting mode of the outdoor heat exchanger, the time of the high-temperature sterilization mode of the air conditioner is prolonged, the system can be prevented from frequently entering the defrosting mode, the indoor heat exchanger is maintained in a high-temperature state for a long time, the high-temperature sterilization effect of the air conditioner is improved, and the reliability and the stability of system operation are improved.
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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a control method of an air conditioner according to some embodiments of the present invention;
fig. 2 is a flowchart of a defrosting mode of a control method of an air conditioner according to some embodiments of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A control method of an air conditioner according to an embodiment of the present invention is described below with reference to the accompanying drawings.
Referring to fig. 1, a control method of an air conditioner according to an embodiment of a first aspect of the present invention includes:
and S10, controlling the air conditioner to enter a high-temperature sterilization mode, and controlling the air conditioner to perform heating operation, wherein for example, the air conditioner can be a split floor type air conditioner, or the air conditioner can be a split wall-mounted air conditioner, the air conditioner can be provided with an air inlet, an indoor heat exchanger and an air outlet, airflow enters the air conditioner from the air inlet and flows to the indoor heat exchanger, then the airflow exchanges heat with the indoor heat exchanger, the airflow after heat exchange flows to the air outlet and is discharged, and the purpose of controlling the air conditioner to enter the high-temperature sterilization mode is to kill virus and bacteria on the indoor heat exchanger by increasing the temperature of the indoor heat exchanger. The step is that the temperature of the indoor heat exchanger is gradually increased by controlling the heating operation of the air conditioner, and gradually reaches the temperature capable of effectively killing virus and bacteria, the heating operation can be kept if the air conditioner is in the heating operation, and the air conditioner is controlled to be switched to the heating operation if the air conditioner is in the cooling operation or other non-heating operation;
s20, controlling the temperature of the indoor heat exchanger to reach a sterilization temperature, and achieving that the indoor heat exchanger reaches a temperature for effectively killing virus and bacteria, wherein the sterilization temperature ranges from 56 ℃ to 94 ℃;
s30, the air conditioner keeps the current state to run for a first set time, so that the indoor heat exchanger keeps a high-temperature state for a period of time, and viruses and bacteria on the indoor heat exchanger are effectively killed;
s40, detecting the temperature of the indoor heat exchanger and determining whether the temperature of the indoor heat exchanger is lower than the sterilization temperature, if the temperature of the indoor heat exchanger is lower than the sterilization temperature, adjusting the rotation speed of the indoor fan and the frequency of the compressor to increase the temperature of the indoor heat exchanger, for example, the rotation speed of the indoor fan and the frequency of the compressor may be decreased, after the air conditioner performs the high-temperature sterilization for the first set time, because the temperature of the outdoor heat exchanger is lower within the first set time, frosting may occur on the outdoor heat exchanger, which decreases the heating performance of the air conditioner, which causes the temperature of the indoor heat exchanger to decrease, which may decrease the temperature of the indoor heat exchanger from being higher than the sterilization temperature to being lower than the sterilization temperature.
In the process of adjusting the rotating speed of the indoor fan and the frequency of the compressor, when the rotating speed of the indoor fan is adjusted to the lowest rotating speed (the lowest rotating speed refers to the minimum value of the rotating speed of the indoor fan under the condition that the safe working condition of the air conditioner is guaranteed) and the frequency of the compressor is adjusted to the maximum frequency (the maximum frequency refers to the maximum value of the frequency of the compressor under the condition that the safe working condition of the air conditioner is guaranteed), the air conditioner is controlled to be switched to a defrosting mode to defrost the outdoor heat exchanger, and the air conditioner is controlled to run in a refrigerating mode under the defrosting mode. The method comprises the steps that the rotating speed of an indoor fan is reduced and the frequency of a compressor is increased for multiple times to increase the temperature of an indoor heat exchanger, the time of a high-temperature sterilization mode of the indoor heat exchanger is continuously prolonged, after the rotating speed of the indoor fan is adjusted to the lowest rotating speed and the frequency of the compressor is adjusted to the maximum frequency, the air conditioner cannot continue to reduce the rotating speed of the indoor fan and increase the frequency of the compressor to increase the temperature of the indoor heat exchanger, the air conditioner is in a high-load running state at the moment, the possibility of frost formation on an outdoor heat exchanger is high, the heating capacity of a system can be reduced when the outdoor heat exchanger is in a frosting state, the sterilization effect cannot be guaranteed, and the air conditioner is controlled to enter a defrosting mode to. The temperature of the outdoor heat exchanger is rapidly increased by controlling the air conditioner to be in a refrigeration mode, so that the frost on the outdoor heat exchanger is rapidly melted.
After defrosting of the outdoor heat exchanger is finished, frost on the outdoor heat exchanger is basically or completely removed, the air conditioner is switched to a high-temperature sterilization mode to operate, and the air conditioner starts high-temperature sterilization again.
The control method of the air conditioner in the application preferentially ensures the effective high-temperature sterilization effect of the air conditioner even under the condition that the outdoor heat exchanger frosts, and improves the temperature of the indoor heat exchanger by adjusting the rotating speed of the indoor fan and the frequency of the compressor, maintains the temperature of the indoor heat exchanger to reach the sterilization temperature, and enters the defrosting mode until the air conditioner is regulated to the lowest rotating speed and the frequency of the compressor to the maximum frequency, so that the defrosting of the outdoor heat exchanger can be realized in the high-temperature sterilization process, the heating capacity and the working efficiency of the air conditioner are ensured, the air conditioner is delayed to enter the defrosting mode of the outdoor heat exchanger, the time of the high-temperature sterilization mode of the air conditioner is prolonged, and the time of the air conditioner executing the high-temperature sterilization mode is prolonged, the frequent entering of the system into the defrosting mode can be avoided, and the indoor heat exchanger is maintained in the high-temperature state for a long time, the high-temperature sterilization effect of the air conditioner is improved, and the reliability and the stability of the system operation are improved.
According to the control method of the air conditioner, defrosting of the outdoor heat exchanger can be realized in the high-temperature sterilization process, the heating capacity and the working efficiency of the air conditioner are ensured, the air conditioner is delayed to enter the defrosting mode of the outdoor heat exchanger by controlling the air conditioner to enter the defrosting mode when the rotating speed of the indoor fan is adjusted to the lowest rotating speed and the frequency of the compressor is adjusted to the maximum frequency, the time of the high-temperature sterilization mode of the air conditioner is prolonged, the frequent entering of the system into the defrosting mode can be avoided, the indoor heat exchanger is maintained in a high-temperature state for a long time, the high-temperature sterilization effect of the air conditioner is improved, and the reliability and the stability of the operation of the system are improved.
Referring to fig. 1, according to some embodiments of the present invention, in step S10, the rotation speed of the indoor fan is adjusted to operate at an initial rotation speed value, and the frequency of the compressor is adjusted to operate at an initial frequency value, so that the indoor heat exchanger of the air conditioner is quickly and stably raised to the sterilization temperature. In step S20, after the indoor fan operates for the second set time at the initial value of the rotation speed and the initial value of the frequency of the compressor, it is determined whether the temperature of the indoor heat exchanger is lower than the sterilization temperature, and if the temperature of the indoor heat exchanger is lower than the sterilization temperature, the rotation speed of the indoor fan is reduced to make the temperature of the indoor heat exchanger reach the sterilization temperature. According to the design, after the air conditioner runs for the second set time, namely the temperature of the indoor heat exchanger is stable, whether the temperature of the indoor heat exchanger is lower than the sterilization temperature or not is judged, and therefore the judgment of the control method is real and accurate.
Referring to fig. 1, alternatively, in step S10, detecting the outdoor environment temperature and determining whether the outdoor environment temperature is lower than a first set temperature, if the outdoor environment temperature is lower than the first set temperature, the initial value of the indoor fan speed is set to V1, and the initial value of the compressor frequency is set to F1; if the outdoor environment temperature is not lower than the first set temperature, i.e. the outdoor environment temperature is greater than the first set temperature or the outdoor environment temperature is equal to the first set temperature, the initial value of the indoor fan speed is set to V2, and the initial value of the compressor frequency is set to F2, where V2 is greater than V1, and F2 is greater than F1.
When the outdoor environment temperature is lower than the first set temperature, the outdoor environment temperature is lower, the frosting risk of the outdoor heat exchanger is higher, the frequency initial value of the compressor is set to be smaller F1, the temperature of the outdoor heat exchanger is relatively higher, the rapid frosting of the outdoor heat exchanger is avoided, meanwhile, the rotating speed initial value of the indoor fan is set to be smaller V1, the flow rate of airflow passing through the indoor heat exchanger is lower, the heat transferred to the airflow by the indoor heat exchanger is less, and the temperature of the indoor heat exchanger can reach the sterilization temperature quickly.
When the outdoor environment temperature is not lower than the first set temperature, the outdoor environment temperature is high, the frosting risk of the outdoor heat exchanger is low, and the frequency initial value of the compressor is set to be large F2, so that the temperature of the indoor heat exchanger is improved under the environment condition that the outdoor heat exchanger is not easy to frost, and the temperature of the indoor heat exchanger can reach the sterilization temperature quickly. Since the initial value of the frequency of the compressor is large, the initial value of the rotating speed of the indoor fan is set to be large V2, and the operation of the system can quickly tend to be stable.
Referring to fig. 1, optionally, the first set temperature is in a range of 0 to 8 ℃. Through setting first settlement temperature in above-mentioned within range, both can realize reducing the risk of frosting under lower outdoor environment temperature, can make the air conditioner reach steady state fast in operation earlier stage again simultaneously to can make indoor heat exchanger's temperature promote to sterilization temperature comparatively fast. In addition, the control method is more real and reliable when the initial value of the rotating speed of the indoor fan and the initial value of the frequency of the compressor are set according to the outdoor environment temperature, so that the air conditioner is suitable for different working conditions.
Referring to fig. 1, optionally, the value range of V1 is 300-800rpm, so that the indoor fan rotates at a lower initial value of the rotation speed at a lower ambient temperature, which is beneficial to the temperature of the indoor heat exchanger to reach the sterilization temperature quickly. The value range of F1 is 30-80Hz, so that the compressor can work at a lower frequency at a lower ambient temperature, and the rapid frosting of the outdoor heat exchanger is avoided. The value range of the initial value V2 is 600-1200rpm, so that the indoor fan rotates at a larger initial rotation speed value at a higher ambient temperature, and the operation of the system can quickly tend to be stable. The value range of F2 is 30-100Hz, so that the compressor can work at a higher frequency at a higher ambient temperature, and the temperature of the indoor heat exchanger can quickly reach the sterilization temperature.
Referring to fig. 1, according to some alternative embodiments of the present invention, the second setting time is in a range of 10-20 min. The second set time is limited in a proper range, so that the temperature of the indoor heat exchanger tends to be stable, the judgment of the control method is real and reliable, meanwhile, the condition that the preheating time of the air conditioner is too long is avoided, and whether the temperature of the indoor heat exchanger reaches the sterilization temperature or not is quickly judged after the temperature of the indoor heat exchanger tends to be stable and is correspondingly adjusted, so that the efficiency of a high-temperature sterilization mode of the air conditioner is improved.
Referring to fig. 1, according to some embodiments of the present invention, the minimum rotation speed ranges from 150 rpm to 600rpm, and the maximum frequency ranges from 60 Hz to 120 Hz. Under the condition of ensuring the safe working of the air conditioner, the temperature of the indoor heat exchanger is improved as much as possible by adjusting the indoor fan to reach a lower rotating speed and adjusting the compressor to reach a higher frequency, so that the defrosting of the outdoor heat exchanger can be realized in the high-temperature sterilization process, the heating capacity and the working efficiency of the air conditioner are ensured, the air conditioner is delayed to enter a defrosting mode of the outdoor heat exchanger, and the time of the high-temperature sterilization mode is prolonged.
Referring to fig. 1, according to some embodiments of the present invention, in step S40, if the temperature of the indoor heat exchanger is lower than the sterilization temperature, the rotation speed of the indoor fan is reduced to the minimum rotation speed, and then the frequency of the compressor is increased. Because the rotational speed of indoor fan is great to the temperature influence of indoor heat exchanger, and the frequency of compressor is great to the risk influence that frosts of outdoor heat exchanger. The rotating speed of the indoor fan is reduced to the lowest rotating speed, and then the temperature of the indoor heat exchanger is improved by the frequency of the compressor, so that the temperature of the indoor heat exchanger can be quickly improved, the frosting risk of the outdoor heat exchanger is reduced while the temperature of the indoor heat exchanger is improved, the sterilization effect can be improved, and the reliability and the safety of an air conditioner system are improved.
Referring to fig. 1, optionally, in step S40, if the temperature of the indoor heat exchanger is lower than the sterilization temperature, the rotation speed of the indoor fan is gradually decreased, after the rotation speed of the indoor fan is decreased by a first set step, whether the rotation speed of the indoor fan reaches the minimum rotation speed is detected, and if the rotation speed of the indoor fan does not reach the minimum rotation speed, the operation returns to step S30; if the rotating speed of the indoor fan reaches the lowest rotating speed, the frequency of the compressor is increased so as to continuously increase the temperature of the indoor heat exchanger and improve the sterilization effect. The design can gradually increase the temperature of the indoor heat exchanger by controlling and gradually reducing the rotating speed of the indoor fan, and improve the reliability and stability of the operation of the air conditioner. Meanwhile, after the rotating speed of the indoor fan is reduced every time, whether the rotating speed of the indoor fan is lower than the lowest rotating speed or not is judged, the rotating speed of the indoor fan is prevented from being reduced continuously after the rotating speed of the indoor fan is lower than the lowest rotating speed, and therefore the reliability and the safety of the air conditioner are improved. The frequency of the compressor is increased after the rotating speed of the indoor fan reaches the lowest rotating speed, so that the defrosting of the outdoor heat exchanger can be realized in the high-temperature sterilization process, the heating capacity and the working efficiency of the air conditioner are ensured, the air conditioner is delayed to enter a defrosting mode of the outdoor heat exchanger, the high-temperature sterilization time of the air conditioner is prolonged, and the reliability and the safety of an air conditioner system are improved. For example, the first set step of each reduction of the rotating speed of the indoor fan is the product of the difference value between the sterilization temperature and the current temperature of the indoor heat exchanger and the rotating speed adjusting coefficient, so that the rotating speed of the indoor fan is reduced in proportion, and meanwhile, the value range of the first set step is 1-20 rpm.
Referring to fig. 1, optionally, the first setting time is in a range of 5-15 min. The first set time is limited in a proper range, so that the indoor heat exchanger can maintain a high-temperature state for a period of time, the indoor heat exchanger is effectively sterilized, meanwhile, the first set time is prevented from being too long, whether the temperature of the indoor heat exchanger is lower than the sterilization temperature due to frosting and reduction of the outdoor heat exchanger in the high-temperature sterilization process or not is timely detected, and therefore corresponding adjustment steps are executed, the reliability of the control method is improved, and the high-temperature sterilization effect of the air conditioner is improved.
Referring to fig. 1, according to some alternative embodiments of the present invention, after the air conditioner performs step S30, it is determined whether the accumulated sterilizing operation time of the air conditioner reaches a third set time, which is counted from the time when step S20 ends to the time when it is present and stopped when the air conditioner is in the defrosting mode, so as to ensure that the effective high-temperature sterilizing time of the air conditioner reaches the third set time, thereby achieving effective high-temperature sterilization of the air conditioner. If the accumulated sterilizing operation time of the air conditioner does not reach the third setting time, the step S40 is continuously executed, so that the air conditioner continuously executes the high temperature sterilizing mode to effectively kill the virus and bacteria on the indoor heat exchanger. If the accumulated sterilization operation time of the air conditioner reaches the third set time, the air conditioner exits from the high-temperature sterilization mode, the air conditioner is effectively sterilized at high temperature at the moment, and the air conditioner exits from the high-temperature sterilization mode in time to prevent the air conditioner from being in a high-load state for a long time, so that the service life of the air conditioner is prolonged.
Referring to fig. 1, optionally, the third setting time is in a range of 30-130 min. Through injecing the third settlement time in above-mentioned within range, when guaranteeing the effective pasteurization of indoor heat exchanger, in time withdraw from the pasteurization mode in order to prevent that the air conditioner is in the high load state for a long time to the life of extension air conditioner.
Referring to fig. 1, according to some alternative embodiments of the present invention, the frequency of the compressor is increased step by step, after increasing the frequency of the compressor by each step according to a second set step, whether the frequency of the compressor reaches a maximum frequency is detected, and if the frequency of the compressor reaches the maximum frequency, the air conditioner is controlled to switch to a defrosting mode. The design can gradually increase the temperature of the indoor heat exchanger by controlling the frequency of the compressor to be gradually increased, meanwhile, the frosting risk of the outdoor heat exchanger can be reduced, and the reliability and the stability of the air conditioner are improved. If the frequency of the compressor does not reach the maximum frequency, executing the following steps:
s401, the air conditioner is kept in the current state for a fourth set time, so that the indoor heat exchanger is kept in a high-temperature state for a period of time, and viruses and bacteria on the indoor heat exchanger are effectively killed;
s402, detecting the temperature of the indoor heat exchanger and judging whether the temperature of the indoor heat exchanger is lower than the sterilization temperature or not, returning to the step S401 if the temperature of the indoor heat exchanger is not lower than the sterilization temperature, and continuously increasing the frequency of the compressor step by step according to a second set step if the temperature of the indoor heat exchanger is lower than the sterilization temperature, so that the temperature of the indoor heat exchanger is increased, and the sterilization effect is improved.
After the frequency of the compressor is increased every time, whether the frequency of the compressor is greater than the maximum frequency or not is judged, and the problem that the frequency of the compressor is still increased after the frequency of the compressor is greater than the maximum frequency is avoided, so that the reliability and the safety of the air conditioner are improved. For example, the second setting step for each increase of the frequency of the compressor is the product of the difference between the sterilization temperature and the current temperature of the indoor heat exchanger and the frequency adjustment coefficient, so that the frequency of the compressor is increased proportionally, and meanwhile, the value range of the second setting step is 1-10 Hz.
Referring to fig. 1, optionally, the fourth setting time is in a range of 3-15 min. The fourth setting time is limited in a proper range, so that the indoor heat exchanger can maintain a high-temperature state for a period of time, meanwhile, the fourth setting time is prevented from being too long, whether the temperature of the indoor heat exchanger is lower than the sterilization temperature due to frosting reduction of the outdoor heat exchanger in the high-temperature sterilization process is detected in time, and a corresponding adjusting step is executed, so that the reliability of the control method is improved, and the high-temperature sterilization effect of the air conditioner is improved. The lower limit of the value range of the fourth setting time is smaller than the lower limit of the value range of the first setting time, the design is that partial frosting possibly occurs to the outdoor heat exchanger after the rotating speed of the indoor fan is reduced for many times, the temperature reduction rate of the indoor heat exchanger of the air conditioner is gradually increased, so that the fourth setting time can be shorter to improve the frequency of detecting the temperature of the indoor heat exchanger, the frequency of the compressor is timely improved to timely improve the temperature of the indoor heat exchanger, and the high-temperature sterilization effect of the air conditioner is improved.
Referring to fig. 1, according to some alternative embodiments of the present invention, after the air conditioner performs step S401, it is determined whether the sterilization accumulated operation time of the air conditioner reaches a third set time, which is counted from the time when step S20 ends to the time when it is present and is stopped when the air conditioner is in the defrosting mode, so as to ensure that the effective high-temperature sterilization time of the air conditioner reaches the third set time, thereby achieving effective high-temperature sterilization of the air conditioner. If the accumulated sterilization operation time of the air conditioner does not reach the third setting time, the step S402 is continuously executed, so that the air conditioner continuously executes the high-temperature sterilization mode to effectively kill the viruses and bacteria on the indoor heat exchanger. If the accumulated sterilization operation time of the air conditioner reaches the third set time, the air conditioner exits from the high-temperature sterilization mode, the air conditioner is effectively sterilized at high temperature at the moment, and the air conditioner exits from the high-temperature sterilization mode in time to prevent the air conditioner from being in a high-load state for a long time, so that the service life of the air conditioner is prolonged.
Referring to fig. 2, according to some embodiments of the present invention, the air conditioner exits the defrosting mode after operating in the defrosting mode for a fifth set time, so that the frost on the outdoor heat exchanger is sufficiently melted, and then the air conditioner may reenter the high-temperature sterilization mode, which may prevent the indoor heat exchanger from being at a lower temperature for a long time, thereby improving the high-temperature sterilization effect of the air conditioner.
Referring to fig. 2, optionally, the value of the fifth setting time ranges from 5min to 20 min. Through prescribing the time with the fifth settlement in above-mentioned within range, when guaranteeing effectively to melt the frost on the outdoor heat exchanger, the air conditioner can in time get into the pasteurization mode once more, avoids indoor heat exchanger to be in lower temperature for a long time to improve the effect of air conditioner pasteurization.
Referring to fig. 2, according to some embodiments of the present invention, after the air conditioner exits the defrosting mode, the air conditioner heating operation is controlled such that the temperature of the indoor heat exchanger is restored to the sterilization temperature, and then it returns to step S30. The air conditioner is controlled to heat, so that the temperature of the indoor heat exchanger is rapidly increased, and after the temperature of the indoor heat exchanger is recovered to the sterilization temperature, the high-temperature sterilization mode is continuously executed. The temperature of the indoor heat exchanger is not enough to effectively kill virus and bacteria before the temperature of the indoor heat exchanger is restored to the sterilization temperature, so that the time spent after the defrosting mode is finished and before the temperature of the indoor heat exchanger is restored to the sterilization temperature is not counted in the third set time, and the air conditioner can be effectively sterilized at high temperature.
Referring to fig. 2, optionally, after the air conditioner exits the defrosting mode, the air conditioner is controlled to perform heating operation, the rotating speed of the indoor fan is adjusted to the recovery rotating speed, and the frequency of the compressor is adjusted to the recovery frequency, the recovery rotating speed is greater than the lowest rotating speed, and the recovery frequency is less than the maximum frequency. Meanwhile, the recovery rotating speed is controlled to be greater than the lowest rotating speed, and the recovery frequency is smaller than the maximum frequency, so that the rotating speed of the indoor fan and the frequency of the compressor have a regulation space, and subsequent regulation is facilitated. Whether the temperature of detecting indoor heat exchanger and judging indoor heat exchanger is less than the temperature of disinfecting, if indoor heat exchanger's temperature is less than the temperature of disinfecting, then reduce indoor fan rotational speed to setting for the rotational speed to reduce the heat that indoor heat exchanger transmitted the air current, thereby improve indoor heat exchanger's temperature, and through reducing indoor fan rotational speed to setting for the rotational speed, can improve indoor heat exchanger's temperature fast, in order to reach the temperature of disinfecting fast. If the temperature of the indoor heat exchanger is not lower than the sterilization temperature, the process returns to step S30, so that the high-temperature sterilization mode is continuously performed.
Referring to fig. 2, optionally, the set rotation speed ranges from 0rpm to 300rpm, so that the rotation speed of the indoor fan is relatively low, thereby further increasing the temperature of the indoor heat exchanger, reducing the time for switching the air conditioner from the defrosting mode to the high-temperature sterilization mode, reducing the time for the indoor heat exchanger to be in the low-temperature state, and improving the high-temperature sterilization effect of the air conditioner.
Referring to fig. 2, according to some alternative embodiments of the present invention, if the temperature of the indoor heat exchanger is not lower than the sterilization temperature, the air conditioner is operated for a sixth set time in the current state before returning to step S30, and this design enables the temperature of the indoor heat exchanger to be stabilized by controlling the air conditioner to be operated for the sixth set time after the temperature of the indoor heat exchanger reaches the sterilization temperature. In the process of the air conditioner running for the sixth set time, the temperature of the indoor heat exchanger may be in a frequent fluctuation state, and the virus and bacteria cannot be effectively killed, so that the sixth set time is not counted in the third set time, and the air conditioner can be effectively sterilized at high temperature.
Referring to fig. 2, optionally, the value range of the sixth setting time is 0-10min, which not only can stabilize the temperature of the indoor heat exchanger, but also can quickly return to step S30 to continue executing the high-temperature sterilization mode, so as to improve the high-temperature sterilization effect of the air conditioner.
Referring to fig. 2, according to some alternative embodiments of the present invention, the difference between the recovery rotation speed and the minimum rotation speed is 100-300rpm, and the difference between the maximum frequency and the recovery frequency is 10-30Hz, so as to avoid operating the air conditioner under high load, simultaneously, the temperature of the indoor heat exchanger can be raised quickly, and the risk of failure due to overload during the mode switching process of the air conditioner can be reduced, and the rotation speed of the indoor fan and the frequency of the compressor have a large adjustment space, which facilitates subsequent adjustment.
Referring to fig. 1, an air conditioner according to an embodiment of the second aspect of the present invention includes an air inlet and an air outlet, and includes an indoor fan, an indoor heat exchanger, a throttling device, a compressor, an outdoor fan, an outdoor heat exchanger, and a control module, wherein the compressor, the outdoor heat exchanger, the throttling device, and the indoor heat exchanger are sequentially connected and form a refrigerant cycle, an operation mode of the air conditioner includes a high-temperature sterilization mode, and after the air conditioner enters the high-temperature sterilization mode, the control module controls the air conditioner to operate according to the control method according to the embodiment of the first aspect of the present invention. For example, the air conditioner is a split floor type air conditioner, or the air conditioner is a split wall type air conditioner. The indoor fan can drive external airflow to enter the air conditioner, and the airflow exchanges heat with the indoor heat exchanger and then is discharged from the air outlet. The sterilization control method of the air conditioner in the high-temperature sterilization mode may refer to the above, and will not be described herein again.
According to the air conditioner, the air conditioner works according to the control method, defrosting of the outdoor heat exchanger can be realized in the high-temperature sterilization process, the heating capacity and the working efficiency of the air conditioner are guaranteed, the air conditioner is delayed to enter a defrosting mode of the outdoor heat exchanger, the time of the high-temperature sterilization mode of the air conditioner is prolonged, the system can be prevented from frequently entering the defrosting mode, the indoor heat exchanger is maintained in a high-temperature state for a long time, the high-temperature sterilization effect of the air conditioner is improved, and the reliability and the stability of system operation are improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (24)
1. A method of controlling an air conditioner, comprising:
s10, controlling the air conditioner to enter a high-temperature sterilization mode and controlling the air conditioner to perform heating operation;
s20, controlling the temperature of the indoor heat exchanger to reach the sterilization temperature;
s30, the air conditioner keeps running in the current state for a first set time;
s40, detecting the temperature of the indoor heat exchanger and judging whether the temperature of the indoor heat exchanger is lower than the sterilization temperature, if the temperature of the indoor heat exchanger is lower than the sterilization temperature, adjusting the rotating speed of an indoor fan and the frequency of a compressor to increase the temperature of the indoor heat exchanger,
when the rotating speed of the indoor fan is adjusted to the lowest rotating speed and the frequency of the compressor is adjusted to the maximum frequency, the air conditioner is controlled to be switched to a defrosting mode to defrost the outdoor heat exchanger, the air conditioner operates in a refrigerating mode in the defrosting mode, and after the defrosting of the outdoor heat exchanger is finished, the air conditioner is switched to a high-temperature sterilization mode to operate.
2. The control method of an air conditioner according to claim 1, wherein in step S10, the rotation speed of the indoor fan is adjusted to operate at a rotation speed initial value, and the frequency of the compressor is adjusted to operate at a frequency initial value; in step S20, after the indoor fan operates at the initial value of the rotation speed and the initial value of the frequency for the second set time, it is determined whether the temperature of the indoor heat exchanger is lower than the sterilization temperature, and if the temperature of the indoor heat exchanger is lower than the sterilization temperature, the rotation speed of the indoor fan is reduced to make the temperature of the indoor heat exchanger reach the sterilization temperature.
3. The control method of an air conditioner according to claim 2, wherein in step S10, detecting an outdoor ambient temperature and determining whether the outdoor ambient temperature is lower than a first set temperature,
if the outdoor environment temperature is lower than the first set temperature, setting the initial value of the rotating speed of the indoor fan to be V1 and the initial value of the frequency of the compressor to be F1;
if the outdoor environment temperature is not lower than the first set temperature, the initial value of the rotating speed of the indoor fan is set to be V2, and the initial value of the frequency of the compressor is set to be F2, wherein V2 is larger than V1, and F2 is larger than F1.
4. The control method of the air conditioner according to claim 3, wherein the first set temperature is in a range of 0-8 ℃.
5. The method as claimed in claim 3, wherein the value range of V1 is 300-800rpm, the value range of F1 is 30-80Hz, the value range of V2 is 600-1200rpm, and the value range of F2 is 30-100 Hz.
6. The control method of the air conditioner according to claim 2, wherein the second set time is in a range of 10-20 min.
7. The method as claimed in claim 1, wherein the minimum rotation speed is 150-600rpm, and the maximum frequency is 60-120 Hz.
8. The method of claim 1, wherein in step S40, if the temperature of the indoor heat exchanger is lower than the sterilization temperature, the rotation speed of the indoor fan is decreased to a minimum rotation speed, and then the frequency of the compressor is increased.
9. The method of controlling an air conditioner according to claim 8, wherein in step S40, if the temperature of the indoor heat exchanger is lower than the sterilization temperature, the rotation speed of the indoor fan is gradually decreased, after decreasing the rotation speed of the indoor fan by a first set step, it is detected whether the rotation speed of the indoor fan reaches a minimum rotation speed,
if the rotating speed of the indoor fan does not reach the lowest rotating speed, returning to the step S30;
and if the rotating speed of the indoor fan reaches the lowest rotating speed, increasing the frequency of the compressor.
10. The control method of the air conditioner according to claim 9, wherein the first set time is in a range of 5-15 min.
11. The control method of an air conditioner according to claim 9, wherein after the air conditioner performs the step S30, it is determined whether a sterilization accumulated operation time of the air conditioner reaches a third set time, the third set time being counted from when the step S20 is finished to when present and stopped when the air conditioner is in the defrosting mode,
if the accumulated sterilizing operation time of the air conditioner does not reach the third set time, continuing to execute the step S40;
and if the sterilization accumulated running time of the air conditioner reaches a third set time, exiting the high-temperature sterilization mode.
12. The control method of the air conditioner according to claim 11, wherein the third setting time is in a range of 30-130 min.
13. The control method of an air conditioner according to claim 9, wherein the frequency of the compressor is increased step by step, and after increasing the frequency of the compressor step by a second set step, it is detected whether the frequency of the compressor reaches a maximum frequency,
if the frequency of the compressor reaches the maximum frequency, controlling the air conditioner to be switched to the defrosting mode;
if the frequency of the compressor does not reach the maximum frequency, executing the following steps:
s401, the air conditioner keeps running in the current state for a fourth set time;
s402, detecting the temperature of the indoor heat exchanger and judging whether the temperature of the indoor heat exchanger is lower than the sterilization temperature or not, returning to the step S401 if the temperature of the indoor heat exchanger is not lower than the sterilization temperature, and continuously increasing the frequency of the compressor step by step according to a second set step if the temperature of the indoor heat exchanger is lower than the sterilization temperature.
14. The control method of the air conditioner according to claim 13, wherein the fourth setting time is in a range of 3-15 min.
15. The control method of an air conditioner according to claim 13, wherein after the air conditioner performs step S401, it is determined whether a sterilization accumulated operation time of the air conditioner reaches a third set time, the third set time being counted from when step S20 is finished to when present and stopped when the air conditioner is in the defrosting mode,
if the accumulated sterilizing operation time of the air conditioner does not reach the third set time, continuing to execute the step S402;
and if the sterilization accumulated running time of the air conditioner reaches a third set time, exiting the high-temperature sterilization mode.
16. The control method of an air conditioner according to claim 1, wherein the air conditioner exits the defrosting mode after operating in the defrosting mode for a fifth set time.
17. The control method of the air conditioner according to claim 16, wherein the value of the fifth setting time is in a range of 5-20 min.
18. The control method of an air conditioner according to any one of claims 1 to 17, wherein after the air conditioner exits the defrosting mode, the air conditioner is controlled to perform a heating operation such that the temperature of the indoor heat exchanger is restored to the sterilizing temperature, and then the process returns to step S30.
19. The control method of an air conditioner according to claim 18, wherein after the air conditioner exits the defrosting mode, the air conditioner is controlled to perform a heating operation, the rotational speed of the indoor fan is adjusted to a recovery rotational speed and the frequency of the compressor is adjusted to a recovery frequency, the recovery rotational speed is greater than the lowest rotational speed, the recovery frequency is less than the maximum frequency, the temperature of the indoor heat exchanger is detected and it is determined whether the temperature of the indoor heat exchanger is less than the sterilization temperature,
if the temperature of the indoor heat exchanger is lower than the sterilization temperature, reducing the rotating speed of the indoor fan to a set rotating speed;
and if the temperature of the indoor heat exchanger is not lower than the sterilization temperature, returning to the step S30.
20. The method of claim 19, wherein the set rotational speed is in a range of 0-300 rpm.
21. The control method of an air conditioner according to claim 19, wherein if the temperature of the indoor heat exchanger is not lower than the sterilizing temperature, the air conditioner is maintained in the current state for a sixth set time before returning to step S30.
22. The control method of the air conditioner according to claim 21, wherein the value of the sixth setting time is in a range of 0-10 min.
23. The method as claimed in claim 19, wherein the difference between the recovery speed and the lowest speed is in the range of 100-300rpm, and the difference between the maximum frequency and the recovery frequency is in the range of 10-30 Hz.
24. An air conditioner is characterized in that the air conditioner is provided with an air inlet and an air outlet, the air conditioner comprises an indoor fan, an indoor heat exchanger, a throttling device, a compressor, an outdoor fan, an outdoor heat exchanger and a control module, wherein the compressor, the outdoor heat exchanger, the throttling device and the indoor heat exchanger are sequentially connected and form a refrigerant cycle, the working mode of the air conditioner comprises a high-temperature sterilization mode, and after the air conditioner enters the high-temperature sterilization mode, the control module controls the air conditioner to work according to the control method of any one of claims 1-23.
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| CN111928436A (en) * | 2020-08-05 | 2020-11-13 | Tcl空调器(中山)有限公司 | Indoor environment sterilization method, air conditioner and computer readable storage medium |
| CN112944637A (en) * | 2021-03-23 | 2021-06-11 | 珠海格力电器股份有限公司 | Air conditioner control method and device, air conditioner and storage medium |
| CN113669868A (en) * | 2021-08-30 | 2021-11-19 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
| WO2023082678A1 (en) * | 2021-11-12 | 2023-05-19 | 青岛海尔空调器有限总公司 | Sterilization method and apparatus for sterilization cabin air conditioner, and sterilization cabin air conditioner |
| CN115560450A (en) * | 2022-10-21 | 2023-01-03 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
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