CN108518805B - Operation control method, operation control device, air conditioner and computer readable storage medium - Google Patents

Operation control method, operation control device, air conditioner and computer readable storage medium Download PDF

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CN108518805B
CN108518805B CN201810440983.9A CN201810440983A CN108518805B CN 108518805 B CN108518805 B CN 108518805B CN 201810440983 A CN201810440983 A CN 201810440983A CN 108518805 B CN108518805 B CN 108518805B
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value
preset threshold
determining
conditioning system
operation control
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CN108518805A (en
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雷华翘
杨俊�
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides an operation control method, an operation control device, an air conditioner and a computer readable storage medium, wherein the operation control method comprises the following steps: when the operation in a refrigeration mode or a dehumidification mode is detected, detecting the current value of a bus accessed by the air conditioning system according to a preset period; judging the magnitude relation between the bus current value and a preset threshold value; and determining whether to operate in the anti-freeze protection mode according to the size relation. According to the technical scheme, whether the air-conditioning system operates in the anti-freezing protection mode is controlled according to the current value of the bus accessed by the air-conditioning system, so that the accuracy of the air-conditioning system entering anti-freezing protection is improved, the phenomenon that the air-conditioning system does not enter or mistakenly enters the anti-freezing protection is reduced, the abnormal phenomena such as water dripping of an indoor unit are reduced, and the operation reliability of the air-conditioning system is improved.

Description

Operation control method, operation control device, air conditioner and computer readable storage medium
Technical Field
The invention relates to the technical field of air conditioner control, in particular to an operation control method, an operation control device, an air conditioner and a computer readable storage medium.
Background
Due to different use habits and different use environments of users, the air conditioner not only guarantees basic refrigerating and heating functions, but also needs to improve the operation reliability under extreme environments, for example, when the outdoor environment temperature is low, the users may use the air conditioner to refrigerate or dehumidify, at the moment, anti-freezing protection needs to be carried out to improve the operation reliability of the air conditioner, and abnormal phenomena such as water dripping of an indoor unit are reduced.
In the related art, the single control is generally performed based on the temperature of the coil pipe of the indoor unit, and the following technical defects exist:
(1) when the temperature of the coil pipe of the indoor unit is set, the use habit of a user needs to be considered, the range is small, and the accuracy is poor.
(2) When the temperature sensor is improperly positioned, the refrigerant is lacked, the indoor unit heat exchanger is shielded and the like to cause bias flow, the temperature deviation of the indoor unit coil pipe detected by the temperature sensor is large, the accuracy is poor, the phenomena that the temperature sensor does not enter anti-freezing protection or mistakenly enters the anti-freezing protection and the like easily occur, and the user experience is poor.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, it is an object of the present invention to provide an operation control method.
Another object of the present invention is to provide an operation control device.
It is still another object of the present invention to provide an air conditioner.
It is yet another object of the present invention to provide a computer-readable storage medium.
In order to achieve the above object, an aspect of the first aspect of the present invention provides an operation control method, including: when the operation in a refrigeration mode or a dehumidification mode is detected, detecting the current value of a bus accessed by the air conditioning system according to a preset period; judging the magnitude relation between the bus current value and a preset threshold value; and determining whether to operate in the anti-freeze protection mode according to the size relation.
According to the technical scheme, when the air-conditioning system is detected to operate in the refrigeration mode or the dehumidification mode, the bus current value accessed by the air-conditioning system is detected according to the preset period, the size relation between the bus current value and the preset threshold value is judged, whether the air-conditioning system operates in the anti-freezing protection mode is determined according to the size relation, whether the air-conditioning system operates in the anti-freezing protection mode is controlled according to the bus current value accessed by the air-conditioning system, the accuracy of entering the anti-freezing protection of the air-conditioning system is improved, the phenomenon that the air-conditioning system does not enter or mistakenly enters the anti-freezing protection mode is reduced, the occurrence of abnormal phenomena such as water dripping of an indoor unit is reduced, the operation reliability of the air-conditioning system is improved, the air-conditioning system can.
It should be noted that the preset period may be 1min to 10 min.
In the above technical solution, preferably, the bus current value includes a first bus current value and a second bus current value, the preset threshold includes a first preset threshold, and the determining a magnitude relationship between the bus current value and the preset threshold includes: calculating a first difference value between a first bus current value detected in a current period and a second bus current value detected in a previous period adjacent to the current period; and judging whether the first difference value is larger than a first preset threshold value.
In the technical scheme, a first difference value between a current value of a first bus detected in a current period and a current value of a second bus detected in a previous period adjacent to the current period is used as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, namely, the change of the detected current value of the bus is used as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, so that a data basis is provided for judging whether the air-conditioning system operates in the anti-freezing protection mode, the accuracy is high, the accuracy of entering the anti-freezing protection of the air-conditioning system is favorably improved, the phenomenon of entering or mistakenly entering the anti-freezing protection is reduced, and the operation.
In any one of the foregoing technical solutions, preferably, the determining the magnitude relationship between the bus current value and the preset threshold includes: detecting indoor environment temperature and outdoor environment temperature in real time, and determining the estimated value of bus current; calculating a second difference value between the estimated bus current value and the bus current value; and judging whether the second difference value is larger than a second preset threshold value.
According to the technical scheme, the estimated value of the bus current is determined by detecting the indoor environment temperature and the outdoor environment temperature in real time, the second difference value between the estimated value of the bus current and the current value of the bus is used as a judgment condition for judging whether the anti-freezing protection mode is operated, a data basis is provided for judging whether the anti-freezing protection mode is operated, the accuracy is high, the anti-freezing protection accuracy of the air-conditioning system is favorably improved, the anti-freezing protection phenomenon is reduced, and the operation reliability of the air-conditioning system is favorably improved.
In any one of the foregoing technical solutions, preferably, the preset threshold includes a third preset threshold, and the determining a magnitude relationship between the bus current value and the preset threshold further includes: calculating a third difference value between the second difference value calculated in the current period and the second difference value calculated in the previous period adjacent to the current period; and judging whether the third difference value is larger than a third preset threshold value.
In the technical scheme, a third difference value between a second difference value calculated in a current period and a second difference value calculated in a previous period adjacent to the current period is used as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, namely, a change of the second difference value between a bus current estimated value and a bus current value is detected as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, so that a data basis is provided for judging whether the air-conditioning system operates in the anti-freezing protection mode, the accuracy is high, the air-conditioning system can enter anti-freezing protection accurately, the phenomenon that the air-conditioning system does not enter or mistakenly enters the anti-freezing protection is reduced, and the operation reliability of the.
In any of the above technical solutions, preferably, the operating of the air conditioning system in the cooling mode, detecting the indoor ambient temperature and the outdoor ambient temperature in real time, and determining the estimated value of the bus current includes: detecting the indoor environment temperature and the outdoor environment temperature in real time, and determining the refrigerating capacity; determining a first operation power according to the refrigerating capacity and a preset refrigerating energy efficiency ratio; a bus current estimate is determined based on the first operating power and the voltage rating.
According to the technical scheme, when the air conditioning system operates in a refrigeration mode, the refrigeration capacity is determined according to the real-time detection of the indoor environment temperature and the outdoor environment temperature, then the first operation power is determined according to the refrigeration capacity and the preset refrigeration energy efficiency ratio, the bus current estimated value is determined according to the first operation power and the rated voltage value, the bus current estimated value is accurate and is in practical fit, the accuracy of the operation of entering the anti-freezing protection mode is improved, the phenomenon that the air conditioning system does not enter or enters in a wrong mode is reduced, and the operation reliability of the air conditioning system is improved.
In any of the above technical solutions, preferably, the operating of the air conditioning system in the dehumidification mode, detecting the indoor ambient temperature and the outdoor ambient temperature in real time, and determining the estimated value of the bus current includes: detecting indoor environment temperature and outdoor environment temperature in real time, and determining dehumidification capacity; determining second operation power according to the dehumidification capacity and a preset dehumidification energy efficiency ratio; and determining the estimated bus current value according to the second operation power and the rated voltage value.
According to the technical scheme, when the air conditioning system operates in a dehumidification mode, the dehumidification capacity is determined by detecting the indoor environment temperature and the outdoor environment temperature in real time, then the second operation power is determined according to the dehumidification capacity and the preset dehumidification energy efficiency ratio, the bus current estimated value is determined according to the second operation power and the rated voltage value, the bus current estimated value is accurate and is actually attached, the accuracy of the operation of entering the anti-freezing protection mode is improved, the phenomenon that the air conditioning system does not enter or enters by mistake is reduced, and the operation reliability of the air conditioning system is improved.
In any one of the above technical solutions, preferably, determining whether to operate in the anti-freeze protection mode according to the magnitude relationship includes: when the first difference is larger than a first preset threshold value and/or the second difference is larger than a second preset threshold value and/or the third difference is larger than a third preset threshold value, determining to operate in an anti-freezing protection mode; and controlling the compressor to stop, the outdoor fan to stop running and the indoor fan to run at a preset rotating speed.
In the technical scheme, when the first difference value is larger than the first preset threshold value and/or the second difference value is larger than the second preset threshold value and/or the third difference value is larger than the third preset threshold value, the operation in the anti-freezing protection mode is determined, the operation in the anti-freezing protection mode is more accurately performed, the phenomenon that the air conditioner does not enter or mistakenly enters the operation in the anti-freezing protection mode is reduced, the anti-freezing protection can be performed on the air conditioning system by controlling the compressor to stop, the outdoor fan to stop operating and the indoor fan to operate at the preset rotating speed, and the abnormal phenomena of water dripping of the indoor unit and the like are reduced while the air conditioning system effectively operates.
In any one of the above technical solutions, preferably, the method further includes: determining the current operation wind shield of the indoor fan; and determining a first preset threshold value and/or a second preset threshold value and/or a third preset threshold value according to the current running gear.
According to the technical scheme, the accuracy of the first preset threshold value, the second preset threshold value and/or the third preset threshold value is improved by determining the current operation wind level of the indoor fan and determining the first preset threshold value and/or the second preset threshold value and/or the third preset threshold value according to the current operation wind level, the accuracy of entering of an anti-freezing protection mode is further improved, and the operation reliability of the air-conditioning system is improved.
It should be noted that, the higher the current operating damper of the indoor fan is, the faster the cooling capacity or the dehumidification capacity can be dissipated, and the first preset threshold, the second preset threshold and the third preset threshold may be relatively smaller, generally 0.1A-1A, so as to reduce the occurrence of the phenomenon that the indoor unit freezes but does not enter the anti-freezing protection mode, on the one hand, reduce the occurrence of the phenomenon that the indoor unit mistakenly enters the anti-freezing protection mode, and on the other hand, reduce the influence on the user experience.
In any one of the above technical solutions, preferably, before determining a magnitude relation between the bus current value and a preset threshold, the method further includes: detecting the temperature of the coil pipe of the indoor unit in real time when the indoor unit is detected to enter a refrigeration mode or a dehumidification mode; and when the temperature of the coil pipe of the indoor unit is detected to be less than a preset temperature threshold value, determining that the coil pipe is in an easy-freezing working condition.
According to the technical scheme, before the relation between the bus current value and the preset threshold value is judged, the relation between the temperature of the coil pipe of the indoor unit and the preset temperature threshold value is judged to determine that the coil pipe is in the easy-freezing working condition, so that the accuracy of entering of the anti-freezing protection mode is further improved, the phenomenon that the coil pipe enters the anti-freezing protection mode by mistake is reduced, and the operation reliability of the air-conditioning system is further improved.
It should be noted that the preset temperature threshold is set higher than the setting in the prior art that does not add the control of the current value detection of the access bus of the air conditioning system.
A second aspect of the present invention provides an operation control device, including: the detection unit is used for detecting the current value of a bus accessed by the air conditioning system according to a preset period when the detection unit detects that the air conditioning system operates in a refrigeration mode or a dehumidification mode; the judging unit is used for judging the size relation between the bus current value and a preset threshold value; and the determining unit is used for determining whether to operate in the anti-freeze protection mode according to the magnitude relation.
According to the technical scheme, when the air-conditioning system is detected to operate in the refrigeration mode or the dehumidification mode, the bus current value accessed by the air-conditioning system is detected according to the preset period, the size relation between the bus current value and the preset threshold value is judged, whether the air-conditioning system operates in the anti-freezing protection mode is determined according to the size relation, whether the air-conditioning system operates in the anti-freezing protection mode is controlled according to the bus current value accessed by the air-conditioning system, the accuracy of entering the anti-freezing protection of the air-conditioning system is improved, the phenomenon that the air-conditioning system does not enter or mistakenly enters the anti-freezing protection mode is reduced, the occurrence of abnormal phenomena such as water dripping of an indoor unit is reduced, the operation reliability of the air-conditioning system is improved, the air-conditioning system can.
It should be noted that the preset period may be 1min to 10 min.
In the above technical solution, preferably, the bus current value includes a first bus current value and a second bus current value, the preset threshold includes a first preset threshold, and the operation control device further includes: the first calculating unit is used for calculating a first difference value between a first bus current value detected in the current period and a second bus current value detected in the previous period adjacent to the current period; the judging unit is further configured to: and judging whether the first difference value is larger than a first preset threshold value.
In the technical scheme, a first difference value between a current value of a first bus detected in a current period and a current value of a second bus detected in a previous period adjacent to the current period is used as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, namely, the change of the detected current value of the bus is used as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, so that a data basis is provided for judging whether the air-conditioning system operates in the anti-freezing protection mode, the accuracy is high, the accuracy of entering the anti-freezing protection of the air-conditioning system is favorably improved, the phenomenon of entering or mistakenly entering the anti-freezing protection is reduced, and the operation.
In any one of the above technical solutions, preferably, the preset threshold includes a second preset threshold, and the determining unit is further configured to: detecting indoor environment temperature and outdoor environment temperature in real time, and determining the estimated value of bus current; the operation control device further includes: the second calculating unit is used for calculating a second difference value between the estimated bus current value and the bus current value; the judging unit is further configured to: and judging whether the second difference value is larger than a second preset threshold value.
According to the technical scheme, the estimated value of the bus current is determined by detecting the indoor environment temperature and the outdoor environment temperature in real time, the second difference value between the estimated value of the bus current and the current value of the bus is used as a judgment condition for judging whether the anti-freezing protection mode is operated, a data basis is provided for judging whether the anti-freezing protection mode is operated, the accuracy is high, the anti-freezing protection accuracy of the air-conditioning system is favorably improved, the anti-freezing protection phenomenon is reduced, and the operation reliability of the air-conditioning system is favorably improved.
In any one of the above technical solutions, preferably, the preset threshold includes a third preset threshold, and the second calculating unit is further configured to: calculating a third difference value between the second difference value calculated in the current period and the second difference value calculated in the previous period adjacent to the current period; the judging unit is further configured to: and judging whether the third difference value is larger than a third preset threshold value.
In the technical scheme, a third difference value between a second difference value calculated in a current period and a second difference value calculated in a previous period adjacent to the current period is used as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, namely, a change of the second difference value between a bus current estimated value and a bus current value is detected as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, so that a data basis is provided for judging whether the air-conditioning system operates in the anti-freezing protection mode, the accuracy is high, the air-conditioning system can enter anti-freezing protection accurately, the phenomenon that the air-conditioning system does not enter or mistakenly enters the anti-freezing protection is reduced, and the operation reliability of the.
In any one of the above technical solutions, preferably, the air conditioning system operates in a cooling mode, and the determination unit is further configured to: detecting the indoor environment temperature and the outdoor environment temperature in real time, and determining the refrigerating capacity; the determination unit is further configured to: determining a first operation power according to the refrigerating capacity and a preset refrigerating energy efficiency ratio; the determination unit is further configured to: a bus current estimate is determined based on the first operating power and the voltage rating.
According to the technical scheme, when the air conditioning system operates in a refrigeration mode, the refrigeration capacity is determined according to the real-time detection of the indoor environment temperature and the outdoor environment temperature, then the first operation power is determined according to the refrigeration capacity and the preset refrigeration energy efficiency ratio, the bus current estimated value is determined according to the first operation power and the rated voltage value, the bus current estimated value is accurate and is in practical fit, the accuracy of the operation of entering the anti-freezing protection mode is improved, the phenomenon that the air conditioning system does not enter or enters in a wrong mode is reduced, and the operation reliability of the air conditioning system is improved.
In any one of the above technical solutions, preferably, the air conditioning system operates in a dehumidification mode, and the determination unit is further configured to: detecting indoor environment temperature and outdoor environment temperature in real time, and determining dehumidification capacity; the determination unit is further configured to: determining second operation power according to the dehumidification capacity and a preset dehumidification energy efficiency ratio; the determination unit is further configured to: and determining the estimated bus current value according to the second operation power and the rated voltage value.
According to the technical scheme, when the air conditioning system operates in a dehumidification mode, the dehumidification capacity is determined by detecting the indoor environment temperature and the outdoor environment temperature in real time, then the second operation power is determined according to the dehumidification capacity and the preset dehumidification energy efficiency ratio, the bus current estimated value is determined according to the second operation power and the rated voltage value, the bus current estimated value is accurate and is actually attached, the accuracy of the operation of entering the anti-freezing protection mode is improved, the phenomenon that the air conditioning system does not enter or enters by mistake is reduced, and the operation reliability of the air conditioning system is improved.
In any one of the above technical solutions, preferably, the determining unit is further configured to: when the first difference is larger than a first preset threshold value and/or the second difference is larger than a second preset threshold value and/or the third difference is larger than a third preset threshold value, determining to operate in an anti-freezing protection mode; the operation control device further includes: and the control unit is used for controlling the compressor to stop, the outdoor fan to stop running and the indoor fan to run at a preset rotating speed.
In the technical scheme, when the first difference value is larger than the first preset threshold value and/or the second difference value is larger than the second preset threshold value and/or the third difference value is larger than the third preset threshold value, the operation in the anti-freezing protection mode is determined, the operation in the anti-freezing protection mode is more accurately performed, the phenomenon that the air conditioner does not enter or mistakenly enters the operation in the anti-freezing protection mode is reduced, the anti-freezing protection can be performed on the air conditioning system by controlling the compressor to stop, the outdoor fan to stop operating and the indoor fan to operate at the preset rotating speed, and the abnormal phenomena of water dripping of the indoor unit and the like are reduced while the air conditioning system effectively operates.
In any one of the above technical solutions, preferably, the determining unit is further configured to: determining the current operation wind shield of the indoor fan; the determination unit is further configured to: and determining a first preset threshold value and/or a second preset threshold value and/or a third preset threshold value according to the current running gear.
According to the technical scheme, the accuracy of the first preset threshold value, the second preset threshold value and/or the third preset threshold value is improved by determining the current operation wind level of the indoor fan and determining the first preset threshold value and/or the second preset threshold value and/or the third preset threshold value according to the current operation wind level, the accuracy of entering of an anti-freezing protection mode is further improved, and the operation reliability of the air-conditioning system is improved.
It should be noted that, the higher the current operating damper of the indoor fan is, the faster the cooling capacity or the dehumidification capacity can be dissipated, and the first preset threshold, the second preset threshold and the third preset threshold may be relatively smaller, generally 0.1A-1A, so as to reduce the occurrence of the phenomenon that the indoor unit freezes but does not enter the anti-freezing protection mode, on the one hand, reduce the occurrence of the phenomenon that the indoor unit mistakenly enters the anti-freezing protection mode, and on the other hand, reduce the influence on the user experience.
In any one of the above technical solutions, preferably, the detection unit is further configured to: detecting the temperature of the coil pipe of the indoor unit in real time when the indoor unit is detected to enter a refrigeration mode or a dehumidification mode; the determination unit is further configured to: and when the temperature of the coil pipe of the indoor unit is detected to be less than a preset temperature threshold value, determining that the coil pipe is in an easy-freezing working condition.
According to the technical scheme, before the relation between the bus current value and the preset threshold value is judged, the relation between the temperature of the coil pipe of the indoor unit and the preset temperature threshold value is judged to determine that the coil pipe is in the easy-freezing working condition, so that the accuracy of entering of the anti-freezing protection mode is further improved, the phenomenon that the coil pipe enters the anti-freezing protection mode by mistake is reduced, and the operation reliability of the air-conditioning system is further improved.
It should be noted that the preset temperature threshold is set higher than the setting in the prior art that does not add the control of the current value detection of the access bus of the air conditioning system.
An aspect of the third aspect of the present invention provides an air conditioner, including a processor, configured to implement the steps of the operation control method according to any one of the aspects of the first aspect of the present invention when executing a computer program stored in a memory; and/or an operation control device including any one of the above-described aspects of the second aspect of the present invention.
In this embodiment, the air conditioner includes a processor, and the processor is configured to implement the steps of the operation control method according to any one of the embodiments of the present invention and/or include the operation control device according to any one of the embodiments of the present invention when executing the computer program stored in the memory, so that all the advantages of the operation control method according to any one of the embodiments of the present invention and/or the operation control device according to any one of the embodiments of the present invention are achieved, and are not described herein again.
An aspect of the fourth aspect of the present invention proposes a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing the steps of the operation control method of any one of the aspects presented in the first aspect of the present invention.
In this technical solution, a computer-readable storage medium stores thereon a computer program, and when the computer program is executed by a processor, the steps of the operation control method according to any one of the technical solutions of the first aspect of the present invention are implemented, so that all the beneficial effects of the operation control method according to any one of the technical solutions of the first aspect of the present invention are achieved, and details are not repeated herein.
Through the technical scheme, whether the air-conditioning system operates in the anti-freezing protection mode is controlled according to the current value of the bus accessed by the air-conditioning system, so that the accuracy of the anti-freezing protection of the air-conditioning system is improved, the phenomenon that the air-conditioning system does not enter or mistakenly enters the anti-freezing protection is reduced, the abnormal phenomena of water dripping of an indoor unit and the like are reduced, and the operation reliability of the air-conditioning system is 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 shows a schematic flow diagram of an operation control method according to an embodiment of the invention;
FIG. 2 shows a schematic block diagram of an operation control device according to an embodiment of the present invention;
FIG. 3 illustrates a schematic block diagram of an air conditioner according to an embodiment of the present invention;
fig. 4 shows a schematic flow diagram of an operation control method according to another embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example 1
Fig. 1 shows a schematic flow diagram of an operation control method according to an embodiment of the invention.
As shown in fig. 1, an operation control method according to an embodiment of the present invention includes:
s102, detecting the current value of a bus accessed by the air conditioning system according to a preset period when the air conditioning system is detected to operate in a refrigeration mode or a dehumidification mode;
s104, judging the size relation between the bus current value and a preset threshold value;
and S106, determining whether to operate in the anti-freezing protection mode according to the size relation.
In the embodiment, when the air-conditioning system is detected to operate in the refrigeration mode or the dehumidification mode, the bus current value accessed by the air-conditioning system is detected according to the preset period, the magnitude relation between the bus current value and the preset threshold value is judged, whether the air-conditioning system operates in the anti-freezing protection mode is determined according to the magnitude relation, whether the air-conditioning system operates in the anti-freezing protection mode is controlled according to the bus current value accessed by the air-conditioning system, the accuracy of entering the anti-freezing protection of the air-conditioning system is improved, the phenomenon that the air-conditioning system does not enter or mistakenly enters the anti-freezing protection mode is reduced, the occurrence of abnormal phenomena such as water dripping of an indoor unit is reduced, the operation reliability of the air-conditioning system is improved, the air-conditioning system can.
It should be noted that the preset period may be 1min to 10 min.
In the foregoing embodiment, preferably, the bus current value includes a first bus current value and a second bus current value, the preset threshold includes a first preset threshold, and determining a magnitude relationship between the bus current value and the preset threshold includes: calculating a first difference value between a first bus current value detected in a current period and a second bus current value detected in a previous period adjacent to the current period; and judging whether the first difference value is larger than a first preset threshold value.
In the embodiment, a first difference value between a current value of a first bus detected in a current period and a current value of a second bus detected in a previous period adjacent to the current period is used as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, that is, a change in the detected bus current value is used as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, so that a data basis is provided for judging whether the air-conditioning system operates in the anti-freezing protection mode, and the method is high in accuracy, beneficial to improving the accuracy of the air-conditioning system entering anti-freezing protection, and beneficial to improving the operation reliability of the air-conditioning system.
In any one of the foregoing embodiments, preferably, the preset threshold includes a second preset threshold, and determining a magnitude relationship between the bus current value and the preset threshold includes: detecting indoor environment temperature and outdoor environment temperature in real time, and determining the estimated value of bus current; calculating a second difference value between the estimated bus current value and the bus current value; and judging whether the second difference value is larger than a second preset threshold value.
In the embodiment, the estimated value of the bus current is determined by detecting the indoor environment temperature and the outdoor environment temperature in real time, and the second difference value between the estimated value of the bus current and the current value of the bus is used as the judgment condition for judging whether the anti-freezing protection mode is operated, so that a data basis is provided for judging whether the anti-freezing protection mode is operated, the accuracy of the air-conditioning system entering the anti-freezing protection mode is improved, the phenomenon of entering or mistakenly entering the anti-freezing protection mode is reduced, and the operation reliability of the air-conditioning system is improved.
In any one of the foregoing embodiments, preferably, the preset threshold includes a third preset threshold, and the determining a magnitude relationship between the bus current value and the preset threshold further includes: calculating a third difference value between the second difference value calculated in the current period and the second difference value calculated in the previous period adjacent to the current period; and judging whether the third difference value is larger than a third preset threshold value.
In this embodiment, a third difference value between the second difference value calculated in the current period and the second difference value calculated in the previous period adjacent to the current period is used as a determination condition for determining whether to operate in the freeze-prevention protection mode, that is, a change in the second difference value between the estimated value of the bus current and the current value of the bus is detected as a determination condition for determining whether to operate in the freeze-prevention protection mode, so that a data basis is provided for determining whether to operate in the freeze-prevention protection mode, and the accuracy is high, thereby facilitating to improve the accuracy of entering the freeze-prevention protection of the air conditioning system, reducing the occurrence of the phenomenon of not entering or mistakenly entering the freeze-prevention protection, and further facilitating to improve the operation reliability of.
In any of the above embodiments, preferably, the air conditioning system is operated in a cooling mode, and the real-time detection of the indoor ambient temperature and the outdoor ambient temperature and the determination of the estimated bus current value include: detecting the indoor environment temperature and the outdoor environment temperature in real time, and determining the refrigerating capacity; determining a first operation power according to the refrigerating capacity and a preset refrigerating energy efficiency ratio; a bus current estimate is determined based on the first operating power and the voltage rating.
In the embodiment, when the air conditioning system operates in the refrigeration mode, the refrigeration capacity is determined according to the real-time detection of the indoor environment temperature and the outdoor environment temperature, then the first operation power is determined according to the refrigeration capacity and the preset refrigeration energy efficiency ratio, the bus current estimated value is determined according to the first operation power and the rated voltage value, the bus current estimated value is relatively accurate and is fit to the reality, the accuracy of the operation in the anti-freezing protection mode is improved, the occurrence of the phenomenon of no-entry or mistaken-entry is reduced, and the operation reliability of the air conditioning system is improved.
In any of the above embodiments, preferably, the air conditioning system is operated in a dehumidification mode, and the real-time detection of the indoor ambient temperature and the outdoor ambient temperature and the determination of the estimated bus current value include: detecting indoor environment temperature and outdoor environment temperature in real time, and determining dehumidification capacity; determining second operation power according to the dehumidification capacity and a preset dehumidification energy efficiency ratio; and determining the estimated bus current value according to the second operation power and the rated voltage value.
In the embodiment, when the air conditioning system operates in the dehumidification mode, the dehumidification capacity is determined by detecting the indoor environment temperature and the outdoor environment temperature in real time, then the second operation power is determined according to the dehumidification capacity and the preset dehumidification energy efficiency ratio, the bus current estimated value is determined according to the second operation power and the rated voltage value, the bus current estimated value is relatively accurate and is fit to the reality, the accuracy of the operation in the anti-freezing protection mode is improved, the occurrence of the phenomenon of no-entry or mistaken-entry is reduced, and the operation reliability of the air conditioning system is improved.
In any of the above embodiments, preferably, determining whether to operate in the freeze protection mode based on the magnitude relationship comprises: when the first difference is larger than a first preset threshold value and/or the second difference is larger than a second preset threshold value and/or the third difference is larger than a third preset threshold value, determining to operate in an anti-freezing protection mode; and controlling the compressor to stop, the outdoor fan to stop running and the indoor fan to run at a preset rotating speed.
In this embodiment, when the first difference is greater than the first preset threshold, and/or the second difference is greater than the second preset threshold, and/or the third difference is greater than the third preset threshold, it is determined that the air-conditioning system operates in the anti-freezing protection mode, and the entering of the anti-freezing protection mode is more accurate, so that the occurrence of the phenomenon that the air-conditioning system does not enter or erroneously enters the anti-freezing protection mode is reduced.
In any one of the above embodiments, preferably, the method further includes: determining the current operation wind shield of the indoor fan; and determining a first preset threshold value and/or a second preset threshold value and/or a third preset threshold value according to the current running gear.
In the embodiment, the accuracy of the first preset threshold, the second preset threshold and/or the third preset threshold is improved by determining the current operation wind level of the indoor fan and determining the first preset threshold and/or the second preset threshold and/or the third preset threshold according to the current operation wind level, so that the accuracy of entering the anti-freezing protection mode is further improved, and the operation reliability of the air-conditioning system is improved.
It should be noted that, the higher the current operating damper of the indoor fan is, the faster the cooling capacity or the dehumidification capacity can be dissipated, and the first preset threshold, the second preset threshold and the third preset threshold may be relatively smaller, generally 0.1A-1A, so as to reduce the occurrence of the phenomenon that the indoor unit freezes but does not enter the anti-freezing protection mode, on the one hand, reduce the occurrence of the phenomenon that the indoor unit mistakenly enters the anti-freezing protection mode, and on the other hand, reduce the influence on the user experience.
In any one of the above embodiments, preferably, before determining the magnitude relationship between the bus current value and the preset threshold, the method further includes: detecting the temperature of the coil pipe of the indoor unit in real time when the indoor unit is detected to enter a refrigeration mode or a dehumidification mode; and when the temperature of the coil pipe of the indoor unit is detected to be less than a preset temperature threshold value, determining that the coil pipe is in an easy-freezing working condition.
In the embodiment, before the magnitude relation between the bus current value and the preset threshold is judged, the magnitude relation between the temperature of the coil pipe of the indoor unit and the preset temperature threshold is judged to determine that the coil pipe is in the easy-freezing working condition, so that the accuracy of entering the anti-freezing protection mode is further improved, the phenomenon of mistakenly entering the anti-freezing protection mode is reduced, and the operation reliability of the air conditioning system is further improved.
It should be noted that the preset temperature threshold is set higher than the setting in the prior art that does not add the control of the current value detection of the access bus of the air conditioning system.
Example 2
Fig. 2 shows a schematic block diagram of an operation control device 200 according to an embodiment of the present invention.
As shown in fig. 2, the operation control device 200 according to the embodiment of the present invention includes: the detection unit 202 is used for detecting the current value of a bus accessed by the air conditioning system according to a preset period when the air conditioning system is detected to operate in a refrigeration mode or a dehumidification mode; the judging unit 204 is used for judging the magnitude relation between the bus current value and a preset threshold value; a determining unit 206, configured to determine whether to operate in the anti-freeze protection mode according to the magnitude relationship.
In the embodiment, when the air-conditioning system is detected to operate in the refrigeration mode or the dehumidification mode, the bus current value accessed by the air-conditioning system is detected according to the preset period, the magnitude relation between the bus current value and the preset threshold value is judged, whether the air-conditioning system operates in the anti-freezing protection mode is determined according to the magnitude relation, whether the air-conditioning system operates in the anti-freezing protection mode is controlled according to the bus current value accessed by the air-conditioning system, the accuracy of entering the anti-freezing protection of the air-conditioning system is improved, the phenomenon that the air-conditioning system does not enter or mistakenly enters the anti-freezing protection mode is reduced, the occurrence of abnormal phenomena such as water dripping of an indoor unit is reduced, the operation reliability of the air-conditioning system is improved, the air-conditioning system can.
It should be noted that the preset period may be 1min to 10 min.
In the above embodiment, preferably, the bus current value includes a first bus current value and a second bus current value, the preset threshold includes a first preset threshold, and the operation control device 200 further includes: a first calculating unit 208, configured to calculate a first difference between a first bus bar current value detected in a current period and a second bus bar current value detected in a previous period adjacent to the current period; the determining unit 204 is further configured to: and judging whether the first difference value is larger than a first preset threshold value.
In the embodiment, a first difference value between a current value of a first bus detected in a current period and a current value of a second bus detected in a previous period adjacent to the current period is used as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, that is, a change in the detected bus current value is used as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, so that a data basis is provided for judging whether the air-conditioning system operates in the anti-freezing protection mode, and the method is high in accuracy, beneficial to improving the accuracy of the air-conditioning system entering anti-freezing protection, and beneficial to improving the operation reliability of the air-conditioning system.
In any of the above embodiments, preferably, the preset threshold includes a second preset threshold, and the determining unit 206 is further configured to: detecting indoor environment temperature and outdoor environment temperature in real time, and determining the estimated value of bus current; the operation control device 200 further includes: a second calculating unit 210 for calculating a second difference between the estimated bus current value and the bus current value; the determining unit 204 is further configured to: and judging whether the second difference value is larger than a second preset threshold value.
In the embodiment, the estimated value of the bus current is determined by detecting the indoor environment temperature and the outdoor environment temperature in real time, and the second difference value between the estimated value of the bus current and the current value of the bus is used as the judgment condition for judging whether the anti-freezing protection mode is operated, so that a data basis is provided for judging whether the anti-freezing protection mode is operated, the accuracy of the air-conditioning system entering the anti-freezing protection mode is improved, the phenomenon of entering or mistakenly entering the anti-freezing protection mode is reduced, and the operation reliability of the air-conditioning system is improved.
In any one of the above technical solutions, preferably, the preset threshold includes a third preset threshold, and the second calculating unit 210 is further configured to: calculating a third difference value between the second difference value calculated in the current period and the second difference value calculated in the previous period adjacent to the current period; the determining unit 204 is further configured to: and judging whether the third difference value is larger than a third preset threshold value.
In the technical scheme, a third difference value between a second difference value calculated in a current period and a second difference value calculated in a previous period adjacent to the current period is used as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, namely, a change of the second difference value between a bus current estimated value and a bus current value is detected as a judgment condition for judging whether the air-conditioning system operates in the anti-freezing protection mode, so that a data basis is provided for judging whether the air-conditioning system operates in the anti-freezing protection mode, the accuracy is high, the air-conditioning system can enter anti-freezing protection accurately, the phenomenon that the air-conditioning system does not enter or mistakenly enters the anti-freezing protection is reduced, and the operation reliability of the.
In any of the above embodiments, preferably, the air conditioning system operates in a cooling mode, and the determining unit 206 is further configured to: detecting the indoor environment temperature and the outdoor environment temperature in real time, and determining the refrigerating capacity; the determining unit 206 is further configured to: determining a first operation power according to the refrigerating capacity and a preset refrigerating energy efficiency ratio; the determining unit 206 is further configured to: a bus current estimate is determined based on the first operating power and the voltage rating.
In the embodiment, when the air conditioning system operates in the refrigeration mode, the refrigeration capacity is determined according to the real-time detection of the indoor environment temperature and the outdoor environment temperature, then the first operation power is determined according to the refrigeration capacity and the preset refrigeration energy efficiency ratio, the bus current estimated value is determined according to the first operation power and the rated voltage value, the bus current estimated value is relatively accurate and is fit to the reality, the accuracy of the operation in the anti-freezing protection mode is improved, the occurrence of the phenomenon of no-entry or mistaken-entry is reduced, and the operation reliability of the air conditioning system is improved.
In any of the above embodiments, preferably, the air conditioning system operates in a dehumidification mode, and the determination unit 206 is further configured to: detecting indoor environment temperature and outdoor environment temperature in real time, and determining dehumidification capacity; the determining unit 206 is further configured to: determining second operation power according to the dehumidification capacity and a preset dehumidification energy efficiency ratio; the determining unit 206 is further configured to: and determining the estimated bus current value according to the second operation power and the rated voltage value.
In the embodiment, when the air conditioning system operates in the dehumidification mode, the dehumidification capacity is determined by detecting the indoor environment temperature and the outdoor environment temperature in real time, then the second operation power is determined according to the dehumidification capacity and the preset dehumidification energy efficiency ratio, the bus current estimated value is determined according to the second operation power and the rated voltage value, the bus current estimated value is relatively accurate and is fit to the reality, the accuracy of the operation in the anti-freezing protection mode is improved, the occurrence of the phenomenon of no-entry or mistaken-entry is reduced, and the operation reliability of the air conditioning system is improved.
In any of the above embodiments, preferably, the determining unit 206 is further configured to: when the first difference is larger than a first preset threshold value and/or the second difference is larger than a second preset threshold value and/or the third difference is larger than a third preset threshold value, determining to operate in an anti-freezing protection mode; the operation control device 200 further includes: and a control unit 212 for controlling the compressor to be stopped, the outdoor fan to be stopped, and the indoor fan to be operated at a preset rotation speed.
In this embodiment, when the first difference is greater than the first preset threshold, and/or the second difference is greater than the second preset threshold, and/or the third difference is greater than the third preset threshold, it is determined that the air-conditioning system operates in the anti-freezing protection mode, and the entering of the anti-freezing protection mode is more accurate, so that the occurrence of the phenomenon that the air-conditioning system does not enter or erroneously enters the anti-freezing protection mode is reduced.
In any of the above embodiments, preferably, the determining unit 206 is further configured to: determining the current operation wind shield of the indoor fan; the determining unit 206 is further configured to: and determining a first preset threshold value and/or a second preset threshold value and/or a third preset threshold value according to the current running gear.
In the embodiment, the accuracy of the first preset threshold, the second preset threshold and/or the third preset threshold is improved by determining the current operation wind level of the indoor fan and determining the first preset threshold and/or the second preset threshold and/or the third preset threshold according to the current operation wind level, so that the accuracy of entering the anti-freezing protection mode is further improved, and the operation reliability of the air-conditioning system is improved.
It should be noted that, the higher the current operating damper of the indoor fan is, the faster the cooling capacity or the dehumidification capacity can be dissipated, and the first preset threshold, the second preset threshold and the third preset threshold may be relatively smaller, generally 0.1A-1A, so as to reduce the occurrence of the phenomenon that the indoor unit freezes but does not enter the anti-freezing protection mode, on the one hand, reduce the occurrence of the phenomenon that the indoor unit mistakenly enters the anti-freezing protection mode, and on the other hand, reduce the influence on the user experience.
In any of the above embodiments, preferably, the detection unit 202 is further configured to: detecting the temperature of the coil pipe of the indoor unit in real time when the indoor unit is detected to enter a refrigeration mode or a dehumidification mode; the determining unit 206 is further configured to: and when the temperature of the coil pipe of the indoor unit is detected to be less than a preset temperature threshold value, determining that the coil pipe is in an easy-freezing working condition.
In the embodiment, before the magnitude relation between the bus current value and the preset threshold is judged, the magnitude relation between the temperature of the coil pipe of the indoor unit and the preset temperature threshold is judged to determine that the coil pipe is in the easy-freezing working condition, so that the accuracy of entering the anti-freezing protection mode is further improved, the phenomenon of mistakenly entering the anti-freezing protection mode is reduced, and the operation reliability of the air conditioning system is further improved.
It should be noted that the preset temperature threshold is set higher than the setting in the prior art that does not add the control of the current value detection of the access bus of the air conditioning system.
Example 3
Fig. 3 shows a schematic block diagram of an air conditioner 300 according to an embodiment of the present invention.
As shown in fig. 3, the air conditioner 300 includes any one of the operation control devices 200 according to the embodiments of the present invention.
In this embodiment, the air conditioner 300 includes any one of the operation control devices 200 according to the embodiments of the present invention, so that all the advantages of any one of the operation control devices 200 according to the embodiments of the present invention are provided, and are not described herein again.
Example 4
The computer-readable storage medium according to an embodiment of the present invention has stored thereon a computer program that, when executed by a processor, implements the steps of the operation control method of any one of the embodiments of the present invention set forth above.
In this embodiment, a computer readable storage medium stores thereon a computer program, and when the computer program is executed by a processor, the computer program implements the steps of the operation control method according to any one of the embodiments of the present invention, so that all the beneficial effects of the operation control method according to any one of the embodiments of the present invention are achieved, and are not described herein again.
Example 5
Fig. 4 shows a schematic flow diagram of an operation control method according to another embodiment of the present invention.
As shown in fig. 4, an operation control method according to another embodiment of the present invention includes:
s402, operating the air conditioning system in a cooling mode or a dehumidifying mode;
s404, after the air conditioning system runs for a preset time T0, detecting the indoor environment temperature, the outdoor environment temperature, the indoor unit coil temperature T and the bus current value I accessed by the air conditioning system according to a preset period;
s406, calculating and determining a bus current estimated value I0, a difference value delta I (namely, a second difference value) between the bus current estimated value and the bus current value in the current period and a variation delta It (namely, a third difference value) of the delta I in the adjacent preset period according to the indoor environment temperature and the outdoor environment temperature;
s408, determine T < Tset? Namely judging whether the temperature of the coil pipe of the indoor unit is less than a preset temperature threshold value or not;
if the determination at S408 is yes, S410 is executed to determine Δ I > Δ Iset 1? Judging whether the second difference value is larger than a second preset threshold value;
if the determination at S408 is no, S404 is executed;
if the determination at S410 is yes, S412 is executed to determine Δ It > Δ Iset 2? Judging whether the third difference is greater than a third preset threshold value;
if the determination at S410 is no, S404 is executed;
if the determination at S412 is yes, then S414 is executed to prevent the freeze protection mode from operating;
if the determination at S412 is no, S404 is executed.
The technical scheme of the invention is explained in detail by combining the attached drawings, and the invention provides an operation control method, an operation control device, an air conditioner and a computer readable storage medium, which control whether to operate in a freeze-prevention protection mode or not according to the current value of a bus accessed by the air conditioning system, thereby improving the accuracy of the air conditioning system entering freeze-prevention protection, reducing the occurrence of the phenomenon of not entering or mistakenly entering freeze-prevention protection, further reducing the occurrence of abnormal phenomena such as water drops of an indoor unit and the like, and improving the operation reliability of the air conditioning system.
The steps in the method of the invention can be sequentially adjusted, combined and deleted according to actual needs.
The units in the device of the invention can be merged, divided and deleted according to actual needs.
It will be understood by those skilled in the art that all or part of the steps in the methods of the embodiments described above may be implemented by hardware instructions of a program, and the program may be stored in a computer-readable storage medium, where the storage medium includes Read-Only Memory (ROM), Random Access Memory (RAM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), One-time Programmable Read-Only Memory (OTPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Compact Disc Read-Only Memory (CD-ROM), or other Memory, such as a magnetic disk, or a combination thereof, A tape memory, or any other medium readable by a computer that can be used to carry or store data.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (14)

1. An operation control method of an air conditioner, comprising:
when the operation in a refrigeration mode or a dehumidification mode is detected, detecting the current value of a bus accessed by the air conditioning system according to a preset period;
judging the size relation between the bus current value and a preset threshold value;
determining whether to operate in an anti-freeze protection mode according to the magnitude relation;
the preset threshold value comprises a second preset threshold value, and the judging of the size relation between the bus current value and the preset threshold value comprises the following steps:
detecting indoor environment temperature and outdoor environment temperature in real time, and determining the estimated value of bus current;
calculating a second difference value between the bus current estimated value and the bus current value;
judging whether the second difference value is larger than a second preset threshold value or not;
the air conditioning system operates in the refrigeration mode, detects the indoor environment temperature and the outdoor environment temperature in real time, and determines the estimated value of the bus current, and the method comprises the following steps:
detecting the indoor environment temperature and the outdoor environment temperature in real time to determine the refrigerating capacity;
determining first operating power according to the refrigerating capacity and a preset refrigerating energy efficiency ratio;
and determining the estimated bus current value according to the first operating power and the rated voltage value.
2. The operation control method according to claim 1, wherein the preset threshold includes a third preset threshold, and the determining a magnitude relationship between the bus current value and the preset threshold further includes:
calculating a third difference value between the second difference value calculated in the current period and the second difference value calculated in the previous period adjacent to the current period;
and judging whether the third difference value is larger than a third preset threshold value.
3. The operation control method according to claim 1, wherein the air conditioning system operates in the dehumidification mode, the real-time detection of the indoor ambient temperature and the outdoor ambient temperature, and the determination of the estimated bus current value comprise:
detecting the indoor environment temperature and the outdoor environment temperature in real time, and determining a dehumidification capacity;
determining second operation power according to the dehumidification amount and a preset dehumidification energy efficiency ratio;
and determining the estimated bus current value according to the second running power and the rated voltage value.
4. The operation control method according to claim 2, wherein the determining whether to operate in the freeze-protected mode according to the magnitude relationship includes:
when the second difference is larger than the second preset threshold and/or the third difference is larger than the third preset threshold, determining to operate in an anti-freezing protection mode;
and controlling the compressor to stop, the outdoor fan to stop running and the indoor fan to run at a preset rotating speed.
5. The operation control method according to claim 2, characterized by further comprising:
determining the current operation wind shield of the indoor fan;
and determining the second preset threshold and/or the third preset threshold according to the current running gear.
6. The operation control method according to any one of claims 1 to 3, characterized by, before the determining of the magnitude relation between the bus current value and a preset threshold value, further comprising:
detecting the temperature of the coil pipe of the indoor unit in real time when the indoor unit is detected to enter the refrigeration mode or the dehumidification mode;
and when the temperature of the coil pipe of the indoor unit is detected to be less than a preset temperature threshold value, determining that the coil pipe is in an easy-freezing working condition.
7. An operation control device of an air conditioner, comprising:
the detection unit is used for detecting the current value of a bus accessed by the air conditioning system according to a preset period when the detection unit detects that the air conditioning system operates in a refrigeration mode or a dehumidification mode;
the judging unit is used for judging the size relation between the bus current value and a preset threshold value;
the determining unit is used for determining whether to operate in an anti-freezing protection mode according to the magnitude relation;
the preset threshold comprises a second preset threshold,
the determination unit is further configured to: detecting indoor environment temperature and outdoor environment temperature in real time, and determining the estimated value of bus current;
the operation control device further includes:
the second calculating unit is used for calculating a second difference value between the estimated bus current value and the bus current value;
the judging unit is further configured to: judging whether the second difference value is larger than a second preset threshold value or not;
the air conditioning system is operated in the cooling mode,
the determination unit is further configured to: detecting the indoor environment temperature and the outdoor environment temperature in real time to determine the refrigerating capacity;
the determination unit is further configured to: determining first operating power according to the refrigerating capacity and a preset refrigerating energy efficiency ratio;
the determination unit is further configured to: and determining the estimated bus current value according to the first operating power and the rated voltage value.
8. The operation control device according to claim 7, wherein the preset threshold value includes a third preset threshold value,
the second computing unit is further to: calculating a third difference value between the second difference value calculated in the current period and the second difference value calculated in the previous period adjacent to the current period;
the judging unit is further configured to: and judging whether the third difference value is larger than a third preset threshold value.
9. The operation control device according to claim 7, wherein the air conditioning system operates in the dehumidification mode,
the determination unit is further configured to: detecting the indoor environment temperature and the outdoor environment temperature in real time, and determining a dehumidification capacity;
the determination unit is further configured to: determining second operation power according to the dehumidification amount and a preset dehumidification energy efficiency ratio;
the determination unit is further configured to: and determining the estimated bus current value according to the second running power and the rated voltage value.
10. The operation control device according to claim 8,
the determination unit is further configured to: when the second difference is larger than the second preset threshold and/or the third difference is larger than the third preset threshold, determining to operate in an anti-freezing protection mode;
the operation control device further includes:
and the control unit is used for controlling the compressor to stop, the outdoor fan to stop running and the indoor fan to run at a preset rotating speed.
11. The operation control device according to claim 8,
the determination unit is further configured to: determining the current operation wind shield of the indoor fan;
the determination unit is further configured to: and determining the second preset threshold and/or the third preset threshold according to the current running gear.
12. The operation control device according to any one of claims 7 to 9,
the detection unit is further configured to: detecting the temperature of the coil pipe of the indoor unit in real time when the indoor unit is detected to enter the refrigeration mode or the dehumidification mode;
the determination unit is further configured to: and when the temperature of the coil pipe of the indoor unit is detected to be less than a preset temperature threshold value, determining that the coil pipe is in an easy-freezing working condition.
13. An air conditioner comprising a memory, a processor, and a computer program stored on the memory and executable on the processor,
the steps of implementing the operation control method according to any one of claims 1 to 6 when the processor executes the computer program;
and/or comprising an operation control device according to any one of claims 7 to 12.
14. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the operation control method according to any one of claims 1 to 6.
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