CN116907033A - Heating defrosting control method and device, air conditioner and readable storage medium - Google Patents

Heating defrosting control method and device, air conditioner and readable storage medium Download PDF

Info

Publication number
CN116907033A
CN116907033A CN202310912979.9A CN202310912979A CN116907033A CN 116907033 A CN116907033 A CN 116907033A CN 202310912979 A CN202310912979 A CN 202310912979A CN 116907033 A CN116907033 A CN 116907033A
Authority
CN
China
Prior art keywords
defrosting
external fan
air conditioner
rotating speed
preset
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310912979.9A
Other languages
Chinese (zh)
Inventor
应必业
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
Original Assignee
Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aux Air Conditioning Co Ltd, Ningbo Aux Electric Co Ltd filed Critical Aux Air Conditioning Co Ltd
Priority to CN202310912979.9A priority Critical patent/CN116907033A/en
Publication of CN116907033A publication Critical patent/CN116907033A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—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
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

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

Abstract

The invention provides a heating defrosting control method, a heating defrosting control device, an air conditioner and a readable storage medium, wherein the control method comprises the following steps: the air conditioner starts a defrosting mode, the external fan stops running, the rotating speed of the external fan is monitored in real time, when the rotating speed meets a first preset condition, the air conditioner enters a heating defrosting control mode, and the running of the external fan is controlled according to a preset control mode, and the heating defrosting control mode is used for eliminating negative influences of external environment on defrosting. According to the invention, through setting the heating defrosting control mode, the influence of the external environment on defrosting of the air conditioner is monitored in real time, when the outdoor environment temperature is low and the external fan stably rotates at a high rotating speed, the external natural wind is stated to stably blow through the external heat exchanger, a large amount of heat on the surface of the external heat exchanger can be taken away, the defrosting efficiency of the air conditioner is seriously influenced, at the moment, the external fan is started and is controlled to reversely run at the same rotating speed, the pressure difference caused by the natural wind can be effectively counteracted, and the defrosting efficiency of the air conditioner is ensured.

Description

Heating defrosting control method and device, air conditioner and readable storage medium
Technical Field
The invention relates to the field of air conditioners, in particular to a heating defrosting control method and device, an air conditioner and a readable storage medium.
Background
When the air conditioner heats and runs, the outdoor heat exchanger can frost in an outdoor low-temperature high-humidity scene, and when the frost layer is formed to a certain thickness, the heating effect is influenced, even the running reliability of the air conditioner is influenced, so that the frost is required to be removed. The current variable frequency air conditioner generally uses a four-way valve to change direction, and an inner fan and an outer fan stop running to defrost an outer machine condenser. When the external machine condenser is frosted, the temperature of the external disk can rise, whether the frosting is completely frosted is judged by sampling the temperature of the external disk, the frosting is stopped, and heating is recovered.
However, in order to avoid excessively long defrosting time, the room cannot get heat, the temperature is greatly reduced, the maximum defrosting time is generally set, and once the maximum defrosting time is exceeded, the defrosting is stopped even if the temperature of the outer disc does not reach the defrosting stopping temperature. Under most scenes, defrosting can be completed within the longest defrosting time, when the outdoor temperature is low, and when natural wind blows through the outdoor condenser, the heat of defrosting is taken away rapidly, so that defrosting effect is poor, defrosting cannot be completed within the longest defrosting time, and a final defrosting layer is accumulated, so that the running reliability of the air conditioner is improved.
Disclosure of Invention
The invention solves the problems that in the prior art, when the outdoor temperature is very low and natural wind blows through an outdoor condenser, the heat of defrosting is taken away rapidly, so that the defrosting effect is poor, defrosting cannot be completed within the longest defrosting time, and the final frost layer is accumulated, so that the running reliability of the air conditioner is caused.
In order to solve the above problems, the present invention provides a heating defrosting control method for an air conditioner, the air conditioner including an external fan, the control method comprising:
the air conditioner starts a defrosting mode, the external fan stops running, the rotating speed of the external fan is monitored in real time, when the rotating speed meets a first preset condition, the air conditioner enters a heating defrosting control mode, and the running of the external fan is controlled according to a preset control mode, and the heating defrosting control mode is used for eliminating negative influences of external environment on defrosting.
The defrosting control mode is used for eliminating negative influences of external environments on defrosting, so that defrosting efficiency of the air conditioner is ensured, defrosting work is smoothly completed within a preset defrosting maximum time, a frost layer is prevented from accumulating thicker in a new running period, heating effect of the air conditioner is ensured, and use experience of a user is improved.
Further, the first preset condition includes: and within the first preset time, the rotating speed change value of the external fan is less than or equal to the first preset value.
When the air conditioner is in a defrosting state, the external fan stops running, when natural wind blows, the external fan is easy to rotate, at the moment, the reason for the rotation of the external fan can be primarily judged according to the change speed of the rotation speed of the external fan, if the natural wind continuously blows for a long time, the external fan can be caused to continuously rotate at a stable rotation speed, at the moment, under the dual actions of the natural wind and the external fan, heat for defrosting on the external heat exchanger can be taken away, defrosting efficiency and defrosting speed of the external heat exchanger are seriously influenced, therefore, when the change value of the rotation speed of the external fan is smaller than or equal to a first preset value, the fact that continuous natural wind blows on the external heat exchanger is indicated, at the moment, if the outdoor temperature is lower, defrosting of the external heat exchanger is seriously influenced, and a defrosting control mode of heating needs to be entered so as to eliminate the influence of the natural wind on defrosting efficiency, and the defrosting work can be smoothly completed in the longest time, and the using experience of a user is ensured.
Further, the value range of the first preset time is 3-7 seconds, and the value range of the first preset value is 8-12RPM.
When the change value of the rotating speed of the external fan within the time range of 3-7 seconds is 8-12RPM, the air conditioner outdoor unit is in the stable natural wind blowing process, the surface of the outdoor heat exchanger is blown by wind, the defrosting efficiency of the air conditioner is seriously affected, and the air conditioner is required to be controlled.
Further, "controlling the operation of the external fan according to the preset control mode" includes:
detecting the outdoor environment temperature, and comparing the outdoor environment temperature with a preset temperature threshold;
when the outdoor environment temperature is greater than or equal to a preset temperature threshold, the external fan keeps in a stop running state;
and when the outdoor environment temperature is smaller than a preset temperature threshold, continuously monitoring the rotating speed of the external fan, and controlling the running state of the external fan according to the rotating speed monitoring result of the external fan.
When the outdoor environment temperature is higher, even if natural wind blows through the outdoor unit of the air conditioner to cause the rotation of the external fan, the defrosting speed of the air conditioner can be increased, negative influence on defrosting is avoided, in this case, the external fan does not need to operate, and can obtain higher defrosting efficiency in a state of stopping operation, so that the air conditioner can finish defrosting within the preset defrosting longest time, and further, the air conditioner is switched into a heating state, the use experience of a user is improved, and when the temperature is lower, the natural wind blows over to take away a large amount of heat for defrosting, the defrosting efficiency and the defrosting speed are seriously influenced, the use experience of the user is influenced, and the negative influence caused by the natural wind is required to be eliminated by adopting corresponding technical means so as to ensure the use experience of the user.
Further, the value range of the preset temperature threshold is 3-5 ℃.
When the outdoor environment temperature is greater than or equal to a preset temperature threshold, natural wind can still play a role in defrosting through the outdoor heat exchanger, so that the defrosting mode can run smoothly, an external fan is not required to be started to run at the moment, and the defrosting efficiency of the air conditioner is ensured while energy is saved; when the outdoor environment temperature is smaller than the preset temperature threshold, the outdoor environment temperature is lower, and at the moment, a great amount of heat is taken away by natural wind blowing through the outdoor heat exchanger, so that the defrosting time required by the air conditioner is prolonged, the defrosting efficiency of the air conditioner is seriously reduced, and the influence of the natural wind is required to be reduced by adopting a corresponding means.
Further, "controlling the operation state of the external fan according to the monitoring result of the rotational speed of the external fan" includes:
the monitored rotating speed V of the external fan Measuring And a preset rotation speed V Pre-preparation Comparing;
when V is Measuring ≤V Pre-preparation When the external fan is in a stop running state;
when V is Measuring ＞V Pre-preparation When the external fan is started, the rotating speed V of the external fan is controlled 1 ＝-V Measuring ；
Wherein V is 1 The running rotating speed after the external fan is started is V 1 ＝-V Measuring Refers to the external fan after starting and the monitored rotation speed V of the external fan Measuring Counter-rotating at the same rotational speed.
When V is Measuring ≤V Pre-preparation When the external fan rotates at a lower rotating speed under the action of natural wind, the external fan is weak, the surface of the outdoor heat exchanger is free from wind blowing at the moment, the defrosting efficiency of the air conditioner is almost free from influence, the air conditioner can finish defrosting within the preset maximum defrosting time, and the reliability of defrosting can be ensured without starting the external fan and keeping a normal defrosting program at the moment; when V is Measuring ＞V Pre-preparation When the natural wind is stronger, a larger pressure difference is formed between the inside and the outside of the outdoor unit, the outer fan is driven to rotate at a larger rotating speed, at the moment, the outer fan and the natural wind can take away a large amount of heat on the surface of the outdoor heat exchanger, so that defrosting efficiency of the air conditioner is reduced, defrosting cannot be completed within a preset defrosting maximum time, at the moment, the outer fan is started and runs at the same rotating speed in the opposite direction of the natural wind, the pressure difference between the inside and the outside of the outdoor unit formed by the natural wind is counteracted, the wind speed at the position of the outdoor heat exchanger is reduced to the minimum, defrosting is completed within the preset defrosting maximum time, reliability of the air conditioner is ensured, and use experience of a user is ensured.
Further, what is said isThe preset rotating speed V Pre-preparation The range of values is 80-120RPM.
When the monitored rotating speed of the external fan is less than or equal to the preset rotating speed, the natural wind is weak, the pressure difference between the inside and the outside of the outdoor unit is not large, no wind blows on the surface of the outdoor heat exchanger, the natural wind almost has no influence on defrosting of the air conditioner, and at the moment, the external fan is kept in a stop running state, so that the energy is saved, and meanwhile, the defrosting efficiency of the air conditioner is ensured; when the monitored rotating speed of the external fan is larger than the preset rotating speed, the natural wind is stronger, the pressure difference between the inside and the outside of the outdoor unit is larger, the surface of the external heat exchanger is blown by wind, the heat for defrosting can be taken away, the external fan is started at the moment, the pressure difference of the natural wind can be counteracted, the wind speed at the position of the external heat exchanger is reduced to the minimum as much as possible, and the defrosting efficiency of the air conditioner is ensured.
The invention also discloses a heating defrosting control device, which comprises:
the outer fan rotating speed monitoring module is used for monitoring the rotating speed of the outer fan in real time;
the calculation module is at least used for calculating the rotating speed change value of the external fan;
the judging module is at least used for judging whether the rotating speed of the external fan meets a first preset condition.
Through cooperation among the modules, the control of heating defrosting of the air conditioner is realized, when external natural wind has negative effect on defrosting efficiency of the air conditioner, even if a corresponding external fan control mode is adopted, the influence of the natural wind on defrosting modes of the air conditioner is reduced to the minimum, so that defrosting of the air conditioner can be successfully completed within the longest preset defrosting time, and the use experience of a user is ensured.
The invention also discloses an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium stores a computer program, and the computer program realizes the heating defrosting control method when being read and run by the processor.
The air conditioner has the same advantages as the heating defrosting control method in the prior art, and is not described herein.
The invention also discloses a computer readable storage medium storing a computer program which, when read and run by a processor, implements a heating defrosting control method as described above.
Compared with the prior art, the heating defrosting control method, the heating defrosting control device, the air conditioner and the readable storage medium have the following advantages:
according to the invention, through setting the heating defrosting control mode, the influence of the external environment on defrosting is monitored in real time, when the outdoor environment temperature is low and the external fan stably rotates at a high rotating speed, the external natural wind is proved to stably blow through the external heat exchanger, so that a large amount of heat on the surface of the external heat exchanger can be taken away, the defrosting efficiency of the air conditioner is seriously influenced, at the moment, the external fan is started and is controlled to run at the same rotating speed in the opposite direction, the pressure difference caused by the natural wind can be effectively counteracted, the wind speed on the surface of the external heat exchanger is reduced to the minimum, and the defrosting efficiency of the air conditioner is ensured. The control method provided by the invention is simple and effective, effectively controls the influence of natural wind on defrosting of the air conditioner, ensures defrosting efficiency and improves the use experience of users.
Drawings
Fig. 1 is a flow chart of a heating defrosting control method according to an embodiment of the invention.
Detailed Description
The present invention will be further described in detail with reference to the drawings and examples, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the described embodiments are some, but not all, embodiments of the invention. The specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
A heating defrosting control method, a heating defrosting control device, an air conditioner and a readable storage medium according to embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
The embodiment provides a heating defrosting control method, which is used for an air conditioner, wherein the air conditioner comprises an external fan, as shown in fig. 1, and the control method comprises the following steps:
the air conditioner starts a defrosting mode, the external fan stops running, the rotating speed of the external fan is monitored in real time, when the rotating speed meets a first preset condition, the air conditioner enters a heating defrosting control mode, and the running of the external fan is controlled according to a preset control mode, and the heating defrosting control mode is used for eliminating negative influences of external environment on defrosting.
In the prior art, when the air conditioner is in defrosting operation, the inner fan and the outer fan are in a stop operation state, the connection relation between the indoor heat exchanger and the outdoor heat exchanger of the air conditioner and the four-way valve is switched, high-temperature and high-pressure gas generated by the compressor directly enters the outdoor heat exchanger so as to remove frost on the outdoor heat exchanger, but when the outdoor environment temperature is lower and natural wind is larger, the air conditioner blows over the surface of the outdoor heat exchanger, heat on the surface of the outdoor heat exchanger is rapidly taken away, defrosting effect and defrosting speed are seriously affected, the situation that defrosting cannot be completed in the preset maximum defrosting time is easily caused, the air conditioner is switched back to the heating operation state, at the moment, a new frost layer is continuously generated on an unreformed frost layer, and the circulation is performed, so that the frost layer is thicker and thicker, and the running stability of the air conditioner is seriously affected. In this embodiment, by monitoring the change condition of the rotation speed of the external fan, whether the defrosting of the current air conditioner is smooth is judged, when the defrosting is not smooth, a heating defrosting control mode is started, and the heating defrosting control mode is used for eliminating negative influences of external environments on the defrosting, such as the condition that the outdoor temperature is lower and the defrosting efficiency is influenced when natural wind is larger, so that the defrosting efficiency of the air conditioner is ensured, the defrosting operation of the air conditioner is smoothly completed within the preset maximum defrosting time, the frost layer is prevented from being accumulated and thicker in a new operation period, the heating effect of the air conditioner is ensured, and the use experience of a user is improved.
In this embodiment, the first preset condition includes: and within the first preset time, the rotating speed change value of the external fan is less than or equal to the first preset value. In the prior art, when the air conditioner is in a defrosting state, the outer fan stops running, when natural wind blows, the rotation of the outer fan is easy to cause, at the moment, the reason of the rotation of the outer fan can be primarily judged according to the change speed of the rotation speed of the outer fan, if the air conditioner is manually stirred, the rotation speed of the outer fan changes rapidly within a certain time, if the air conditioner blows through natural wind for a short time, the change value of the rotation speed of the outer fan is larger, but the influence on defrosting of the outdoor heat exchanger is limited due to shorter duration, the air conditioner can be temporarily not treated, if the air conditioner continuously blows natural wind for a long time, the outer fan can be caused to continuously rotate at a relatively stable rotation speed, at the moment, under the dual action of the natural wind and the outer fan, the heat for defrosting on the outdoor heat exchanger is taken away, the defrosting efficiency and the defrosting speed of the air conditioner are seriously influenced, therefore, when the change value of the rotation speed of the outer fan is smaller than or equal to a first preset value, the fact that the outdoor heat exchanger is continuously blown through natural wind is explained, and the outdoor temperature is lower at the moment, the defrosting of the outdoor heat exchanger is seriously influenced, the defrosting of the outdoor heat exchanger needs to enter control to smoothly, and the defrosting efficiency is guaranteed to be influenced in a mode, and the defrosting operation is smoothly, and the defrosting is finished by a user.
As one optional example, the first preset time may have a value ranging from 3 to 7 seconds, and the first preset time may have a value ranging from 8 to 12RPM. When the change value of the rotating speed of the external fan within the time range of 3-7 seconds is 8-12RPM, the air conditioner outdoor unit is in the stable natural wind blowing process, the surface of the outdoor heat exchanger is blown by wind, the defrosting efficiency of the air conditioner is seriously affected, and the air conditioner is required to be controlled. As one preferable example, the first preset time is preferably 5 seconds, and the first preset value is preferably 10RPM.
As an embodiment of the present invention, "controlling the operation of the external fan in a preset control manner" includes:
detecting the outdoor environment temperature, and comparing the outdoor environment temperature with a preset temperature threshold;
when the outdoor environment temperature is greater than or equal to a preset temperature threshold, the external fan keeps in a stop running state;
and when the outdoor environment temperature is smaller than a preset temperature threshold, continuously monitoring the rotating speed of the external fan, and controlling the running state of the external fan according to the rotating speed monitoring result of the external fan.
It should be understood that when the outdoor environment temperature is higher, even if natural wind blows through the outdoor unit of the air conditioner to cause the rotation of the external fan, the defrosting speed of the air conditioner can be increased, and negative influence on defrosting is not caused.
As an alternative example, the preset temperature threshold value is in the range of 3-5 ℃. When the outdoor environment temperature is greater than or equal to a preset temperature threshold, natural wind can still play a role in defrosting through the outdoor heat exchanger, so that the defrosting mode can run smoothly, an external fan is not required to be started to run at the moment, and the defrosting efficiency of the air conditioner is ensured while energy is saved; when the outdoor environment temperature is smaller than the preset temperature threshold, the outdoor environment temperature is lower, and at the moment, a great amount of heat is taken away by natural wind blowing through the outdoor heat exchanger, so that the defrosting time required by the air conditioner is prolonged, the defrosting efficiency of the air conditioner is seriously reduced, and the influence of the natural wind is required to be reduced by adopting a corresponding means. As one preferred embodiment, the preset temperature threshold is 4 ℃.
As an embodiment of the present invention, "controlling the operation state of the external fan according to the monitoring result of the rotational speed of the external fan" includes:
the monitored rotating speed V of the external fan Measuring And a preset rotation speed V Pre-preparation Comparing;
when V is Measuring ≤V Pre-preparation When the external fan is in a stop running state;
when V is Measuring ＞V Pre-preparation When the external fan is started, the rotating speed V of the external fan is controlled 1 ＝-V Measuring ；
Wherein V is 1 The running rotating speed after the external fan is started is V 1 ＝-V Measuring Refers to the external fan after starting and the monitored rotation speed V of the external fan Measuring Counter-rotating at the same rotational speed.
It should be appreciated that when V Measuring ≤V Pre-preparation When the external fan rotates at a lower rotating speed under the action of natural wind, the external fan is weak, the surface of the outdoor heat exchanger is free from wind blowing at the moment, the defrosting efficiency of the air conditioner is almost free from influence, the air conditioner can finish defrosting within the preset maximum defrosting time, and the reliability of defrosting can be ensured without starting the external fan and keeping a normal defrosting program at the moment; when V is Measuring ＞V Pre-preparation When the natural wind is stronger, a larger pressure difference is formed between the inside and the outside of the outdoor unit, the outer fan is driven to rotate at a larger rotating speed, at the moment, the outer fan and the natural wind can take away a large amount of heat on the surface of the outdoor heat exchanger, so that defrosting efficiency of the air conditioner is reduced, defrosting cannot be completed within a preset defrosting maximum time, at the moment, the outer fan is started and runs at the same rotating speed in the opposite direction of the natural wind, the pressure difference between the inside and the outside of the outdoor unit formed by the natural wind is counteracted, the wind speed at the position of the outdoor heat exchanger is reduced to the minimum, defrosting is completed within the preset defrosting maximum time, reliability of the air conditioner is ensured, and use experience of a user is ensured. Wherein when V Measuring ≤V Pre-preparation When the air conditioner is in a defrosting mode, the external fan is kept in a running stopping state, and the rotating speed of the external fan is monitored in real time until the air conditioner exits from the defrosting mode; when the outer fan is started, the rotating speed V of the outer fan is controlled 1 ＝-V Measuring Until the air conditioner exits the defrosting mode.
As one of the alternative examples, the preset rotational speed V Pre-preparation The range of values is 80-120RPM.
When the monitored rotation speed of the external fan is less than or equal to the preset rotation speed, the natural wind is weak, the pressure difference between the inside and the outside of the outdoor unit is not large, no wind blows on the surface of the outdoor heat exchanger, the natural wind has almost no influence on defrosting of the air conditioner, and at the moment, the external fan is kept in a stop running state, and the air conditioner is in the state thatThe energy is saved, and meanwhile, the defrosting efficiency of the air conditioner is ensured; when the monitored rotating speed of the external fan is larger than the preset rotating speed, the natural wind is stronger, the pressure difference between the inside and the outside of the outdoor unit is larger, the surface of the external heat exchanger is blown by wind, the heat for defrosting can be taken away, the external fan is started at the moment, the pressure difference of the natural wind can be counteracted, the wind speed at the position of the external heat exchanger is reduced to the minimum as much as possible, and the defrosting efficiency of the air conditioner is ensured. As one of the preferred embodiments, the preset rotational speed V Pre-preparation Is 100RPM.
Example 2
The embodiment provides a heating defrosting control method, which comprises the following steps:
step S1: the air conditioner enters a defrosting mode, and the inner fan and the outer fan stop running;
step S2: monitoring the rotating speed of the outer fan, judging whether the change value of the rotating speed of the outer fan meets a first preset condition, if yes, executing a step S3, otherwise, executing a step S6;
step S3: detecting outdoor environment temperature, judging whether the outdoor environment temperature is smaller than a preset temperature threshold, if yes, executing step S4, otherwise, executing step S6;
step S4: judging the monitored rotating speed V of the external fan Measuring Whether or not it is greater than a preset rotation speed V Pre-preparation If yes, executing step S5, otherwise executing step S6;
step S5: starting the outer fan and controlling the rotating speed V of the outer fan 1 ＝-V Measuring ；
Step S6: the external fan keeps in a stop running state.
In step S6, the execution of step S2 is returned until the air conditioner exits the defrosting mode, so that the whole process monitoring in the defrosting process is realized, and the influence of natural wind on the defrosting efficiency is reduced to the minimum.
Specifically, step S2 includes:
step S201: monitoring the wind speed of an outdoor unit;
step S202: calculating a change value of the rotating speed of the external fan in a first preset time in real time;
step S203: comparing the change value of the rotating speed of the external fan with a first preset value, when the change value is larger than the first preset value, judging that the first preset condition is not met, executing step S6, and when the change value is smaller than or equal to the first preset value, judging that the first preset condition is met, and executing step S3.
By the control method, the influence of natural wind on defrosting of the air conditioner can be monitored in real time, so that the influence of the natural wind on the defrosting process is minimized by adopting corresponding measures, the defrosting efficiency of the air conditioner is ensured, and the use experience of a user is ensured.
In the embodiment of the present invention, the first preset time, the first preset value, the preset temperature threshold value, and the preset rotation speed V Pre-preparation The corresponding preset parameters are preset in advance.
Example 3
The present embodiment discloses a heating defrosting control device for realizing a heating defrosting control method described in embodiment 1 or embodiment 2.
The heating defrosting control device comprises:
the outer fan rotating speed monitoring module is used for monitoring the rotating speed of the outer fan in real time;
the calculation module is at least used for calculating the rotating speed change value of the external fan;
the judging module is at least used for judging whether the rotating speed of the external fan meets a first preset condition.
Through cooperation among the modules, the control of heating defrosting of the air conditioner is realized, when external natural wind has negative effect on defrosting efficiency of the air conditioner, even if a corresponding external fan control mode is adopted, the influence of the natural wind on defrosting modes of the air conditioner is reduced to the minimum, so that defrosting of the air conditioner can be successfully completed within the longest preset defrosting time, and the use experience of a user is ensured.
Example 4
The embodiment discloses an air conditioner, which comprises the heating defrosting control device of the embodiment 3.
The air conditioner disclosed in this embodiment includes a computer readable storage medium storing a computer program and a processor, and when the computer program is read and executed by the processor, a heating defrosting control method as described in embodiment 1 or embodiment 2 is implemented.
The air conditioner has the same advantages as those of the heating defrosting control method described in embodiment 1 or embodiment 2 compared with the prior art, and will not be described in detail herein.
Example 5
The present embodiment discloses a computer-readable storage medium storing a computer program which, when read and executed by a processor, implements a heating defrosting control method as described in embodiment 1 or embodiment 2.
Although the present invention is disclosed above, the present invention is not limited thereto. In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.

Claims (10)

1. A heating defrosting control method for an air conditioner, the air conditioner comprising an external fan, the control method comprising:
the air conditioner starts a defrosting mode, the external fan stops running, the rotating speed of the external fan is monitored in real time, when the rotating speed meets a first preset condition, the air conditioner enters a heating defrosting control mode, and the running of the external fan is controlled according to a preset control mode, and the heating defrosting control mode is used for eliminating negative influences of external environment on defrosting.
2. The heating defrosting control method of claim 1, wherein the first preset condition comprises: and within the first preset time, the rotating speed change value of the external fan is less than or equal to the first preset value.
3. The heating defrosting control method of claim 2, wherein the first preset time is 3-7 seconds in value range, and the first preset value is 8-12RPM in value range.
4. The heating defrosting control method of claim 1, wherein controlling the operation of the external fan according to the preset control manner comprises:
detecting the outdoor environment temperature, and comparing the outdoor environment temperature with a preset temperature threshold;
when the outdoor environment temperature is greater than or equal to a preset temperature threshold, the external fan keeps in a stop running state;
and when the outdoor environment temperature is smaller than a preset temperature threshold, continuously monitoring the rotating speed of the external fan, and controlling the running state of the external fan according to the rotating speed monitoring result of the external fan.
5. The heating and defrosting control method of claim 4 wherein the preset temperature threshold is in the range of 3-5 ℃.
6. The heating defrosting control method of claim 4, wherein controlling the operation state of the outer fan according to the rotation speed monitoring result of the outer fan comprises:
the monitored rotating speed V of the external fan Measuring And a preset rotation speed V Pre-preparation Comparing;
when V is Measuring ≤V Pre-preparation When the external fan is in a stop running state;
when V is Measuring ＞V Pre-preparation When the external fan is started, the rotating speed V of the external fan is controlled 1 ＝-V Measuring ；
Wherein V is 1 The running rotating speed after the external fan is started is V 1 ＝-V Measuring Refers to the external fan after starting and the monitored rotation speed V of the external fan Measuring Counter-rotating at the same rotational speed.
7. The heating defrosting control method of claim 6, wherein the preset rotation speed V Pre-preparation The range of values is 80-120RPM.
8. A heating defrosting control device, characterized by comprising:
the outer fan rotating speed monitoring module is used for monitoring the rotating speed of the outer fan in real time;
the calculation module is at least used for calculating the rotating speed change value of the external fan;
the judging module is at least used for judging whether the rotating speed of the external fan meets a first preset condition.
9. An air conditioner comprising a computer readable storage medium storing a computer program and a processor, the computer program implementing a heating defrosting control method according to any one of claims 1 to 7 when read and executed by the processor.
10. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program which, when read and run by a processor, implements a heating defrosting control method according to any one of claims 1-7.
CN202310912979.9A 2023-07-25 2023-07-25 Heating defrosting control method and device, air conditioner and readable storage medium Pending CN116907033A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310912979.9A CN116907033A (en) 2023-07-25 2023-07-25 Heating defrosting control method and device, air conditioner and readable storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310912979.9A CN116907033A (en) 2023-07-25 2023-07-25 Heating defrosting control method and device, air conditioner and readable storage medium

Publications (1)

Publication Number Publication Date
CN116907033A true CN116907033A (en) 2023-10-20

Family

ID=88352817

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310912979.9A Pending CN116907033A (en) 2023-07-25 2023-07-25 Heating defrosting control method and device, air conditioner and readable storage medium

Country Status (1)

Country Link
CN (1) CN116907033A (en)

Similar Documents

Publication Publication Date Title
CN111780348B (en) Air conditioner defrosting method, defrosting control device and air conditioner
CN111981640B (en) Defrosting control method and device, air conditioner and storage medium
CN110940057B (en) Control method for slowing down defrosting attenuation of air conditioner and air conditioner
CN109253525B (en) Self-cleaning control method for outdoor heat exchanger of fixed-frequency air conditioner and air conditioner
CN110260493A (en) Progress control method and control device, air conditioner and computer readable storage medium
CN108758973B (en) Defrosting control method for air conditioner
CN109028465B (en) Defrosting control method for air conditioner
CN112944585B (en) Air conditioning equipment control method and device, air conditioning equipment and storage medium
CN108692423B (en) Defrosting control method for air conditioner
JP7328498B2 (en) Information processing device, air conditioner, information processing method, air conditioning method, and program
CN111174372A (en) Air conditioner control method and device, storage medium and air conditioner
CN108375171B (en) Self-cleaning control method for air conditioner
CN110617603A (en) Air conditioner, control method of air conditioner, and computer-readable storage medium
CN113819578A (en) Air conditioner control method and air conditioner
CN108592294B (en) Defrosting control method for air conditioner
CN111795522A (en) Defrosting end control method, processor and air-source heat pump hot water system
CN115200176B (en) Control method and control device for defrosting of multiple external units in parallel connection and multi-connected air conditioner
CN111457540B (en) Outdoor fan control method and device and air conditioner
CN111829139A (en) Air conditioner defrosting control method and device, air conditioner and storage medium
CN114413413B (en) Defrosting method of air conditioner and air conditioner
CN109028464B (en) Defrosting control method for air conditioner
CN111006359A (en) Control method and system for reducing frosting speed of air conditioner and air conditioner
CN110701729A (en) Air conditioner heating control method and device, air conditioner and computer readable storage medium
CN116907033A (en) Heating defrosting control method and device, air conditioner and readable storage medium
CN108775741B (en) Defrosting control method for air conditioner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination