CN114838483B - Control method and control device of air conditioner and air conditioner - Google Patents

Control method and control device of air conditioner and air conditioner Download PDF

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Publication number
CN114838483B
CN114838483B CN202210564628.9A CN202210564628A CN114838483B CN 114838483 B CN114838483 B CN 114838483B CN 202210564628 A CN202210564628 A CN 202210564628A CN 114838483 B CN114838483 B CN 114838483B
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China
Prior art keywords
fresh air
air fan
function
rotating speed
running
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CN202210564628.9A
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Chinese (zh)
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CN114838483A (en
Inventor
颜景旭
袁前
陈伟
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Priority to CN202210564628.9A priority Critical patent/CN114838483B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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

Abstract

The invention provides a control method and a control device of an air conditioner and the air conditioner, wherein the control method comprises the following steps: controlling an indoor unit of the air conditioner to run a fresh air function; judging whether to control the air conditioner to operate a heat exchange function; if yes, the rotating speed of the fresh air fan of the indoor unit is adjusted according to the first condensation preventing condition. The invention solves the technical problems that when the air conditioner runs the fresh air function, other modes, such as a heat exchange function, are operated at the same time, so that the user feel comfortable, and the condensation of the fresh air outlet is reduced.

Description

Control method and control device of air conditioner and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and device of an air conditioner and the air conditioner.
Background
With the continuous development of society, people's pursuit of quality of life is also continuously increasing. At present, when fresh air is brought to a user, the problem of condensation and dripping easily occurs at a fresh air outlet when the fresh air conditioner is used for a long time, so that after-sales complaints are caused.
In particular, when the air conditioner runs the fresh air function, other modes, such as a heat exchange function, are run at the same time, so that the problem that the condensation of the fresh air outlet is reduced while the user feels comfortable is difficult to consider.
Disclosure of Invention
The invention solves the technical problems that when the air conditioner runs the fresh air function, other modes, such as a heat exchange function, are operated at the same time, so that the user feel comfortable, and the condensation of the fresh air outlet is reduced.
In order to solve the above problems, the present invention provides a control method of an air conditioner, comprising: controlling an indoor unit of the air conditioner to run a fresh air function; judging whether to control the air conditioner to operate a heat exchange function; if yes, the rotating speed of a fresh air fan of the indoor unit is adjusted according to the first condensation preventing condition; wherein the first anti-condensation condition comprises: the duration of the fresh air function is operated; or, the duration of running the fresh air function and the temperature difference between the indoor environment temperature and the outdoor environment temperature; the duration of the fresh air function is T, the indoor environment temperature is T1, the outdoor environment temperature is T2, the temperature difference is delta T, and delta T=T1-T2.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: on the one hand, when the user controls the air conditioner to simultaneously start the fresh air function and the heat exchange function, the rotation speed of the fresh air fan is adjusted by utilizing the preset first condensation prevention condition, so that the influence on the heat exchange efficiency of the heat exchange function caused by overlarge rotation speed of the fresh air fan is avoided, and the use experience of the user is prevented from being reduced; on the other hand, the number of times that condensation appears near fresh air fan air outlet and edge has still been effectively reduced through the rotational speed to fresh air fan to be adjusted. Specifically, the heat exchange function may be, for example, a heating function, so, at the initial operation stage of the air conditioner, Δt is smaller, so that in order to facilitate air exchange of indoor and outdoor environments in a short time, the long-term operation of the fresh air function is avoided, and the condensation condition at the air outlet of the fresh air fan is avoided, so that the rotation speed of the fresh air fan is adjusted to a high air level, and at the same time, Δt is made to be greater and greater under the effect of the heat exchange function, that is, the temperature difference between the outdoor environment temperature and the indoor environment temperature is increased, if the temperature difference between the outdoor environment temperature and the indoor environment temperature is increased, the fresh air fan is still kept to operate in the high air level at this time, the duration of cold and hot junction at the air outlet of the fresh air fan and the position near the fresh air fan is easy to be aggravated, and the condensation phenomenon is easy to occur. Therefore, in order to ensure that the user obtains good use experience, the rotation speed of the fresh air fan can be reduced along with the increase of the delta T, and simultaneously, the rotation speed of the fresh air fan needs to be reduced in combination with the increase of the running time, so that the fresh air function and the heating function are balanced, and the overall efficiency of the air conditioner is ensured.
In one example of the invention, the fresh air fan is adjusted to be in a corresponding wind gear according to the fact that t falls into different preset time intervals.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the corresponding relation between t and the corresponding preset time interval is utilized to adjust the size of the wind shield of the fresh air fan, so that the phenomenon that the running instability of the air conditioner is easily caused by frequent rotation speed adjustment due to the fact that the rotation speed of the fresh air fan is adjusted at any time according to t is avoided.
In one example of the present invention, when the first anti-condensation condition includes T and Δt; the adjusting the rotating speed of the fresh air fan of the indoor unit according to the first condensation preventing condition comprises the following steps: when t is less than or equal to t0, regulating the fresh air fan to operate a first wind shield; when T is more than T0, if |delta T| is less than or equal to T3, regulating the fresh air fan to keep the first wind gear to operate; if the absolute delta T is more than T3, regulating and reducing the fresh air fan to a second wind gear for operation; wherein T0 is a first preset time, |ΔT| is an absolute temperature value of the temperature difference, and T3 is a first preset temperature difference value.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: for example, t0 may be 1 hour, and the unit of hour may be denoted as H, so as to avoid resonance noise generated between the fresh air fan and the circulating fan of the air conditioner during operation, and make the first wind shield be the middle wind shield. T3 is taken to be 15 ℃, so when delta T is less than or equal to 15 ℃, the temperature difference between the indoor environment temperature and the outdoor environment temperature is still smaller, and the middle wind shield operation can be continuously kept; when T > 1H, it means that the fresh air fan has been operated more than 1H in the middle wind gear state, and then, for example, the heat exchange function is taken as a heating function, and the Δt is increased in combination with the heating function, for example, when Δt > 15 ℃, the wind gear needs to be turned down, that is, in the second wind gear state, for example, the low wind gear. Therefore, through the accurate regulation and control of the rotation speed of the fresh air fan, when the large temperature difference between the indoor environment and the outdoor environment is avoided, the fresh air fan still keeps the middle wind gear to operate, the condition that condensation appears near the air outlet of the fresh air fan or even the condensation gathers and drips is aggravated, meanwhile, when the delta T is in a large or small state, the fresh air fan operates with the same large wind gear, so that when the delta T is large, more temperature of the indoor environment is taken away, the heat exchange efficiency is reduced, and the comfortable experience of a user is reduced.
In an example of the present invention, the adjusting the rotation speed of the fresh air fan of the indoor unit according to the first condensation preventing condition further includes: when t1 is less than t2, the fresh air fan is controlled to continue to keep the second wind gear to run; and t1 is the second wind gear running time of the fresh air fan, and t2 is a second preset time.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: in order to ensure the overall operation efficiency, the rotating speed of the fresh air fan is prevented from being frequently regulated, so that the fresh air fan continues to operate in a low wind gear state.
In an example of the present invention, the adjusting the rotation speed of the fresh air fan of the indoor unit according to the first condensation preventing condition further includes: when T1 is more than or equal to T2, if T3 is less than or equal to |DeltaT| is less than or equal to T4, controlling the rotating speed of the fresh air fan to be reduced to a third rotating speed, and keeping the fresh air fan to operate at the third rotating speed; wherein, T4 is a second preset temperature difference value; if the absolute delta T is more than T4, controlling the rotating speed of the fresh air fan to be reduced to the third rotating speed, and controlling the fresh air fan to alternately execute a first instruction and a second instruction; the first instruction includes running the third rotational speed for a fourth preset time, and the second instruction includes keeping stopped running for a fifth preset time.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: in one embodiment, T4 is preferably 25 ℃. Thus, when 15 ℃ is less than or equal to |DeltaT| is less than or equal to 25 ℃, the temperature difference between the indoor environment temperature and the outdoor environment temperature is larger, and the running time of the fresh air fan in the low wind gear state is longer than 2H, the cold and hot junction at the air outlet of the fresh air fan can be considered to be easy to generate a condensation phenomenon, and then the rotating speed corresponding to the low wind gear can be further reduced to a third rotating speed so as to reduce the occurrence probability of the condensation condition; in addition, when |DeltaT| is more than 25 ℃, the first instruction and the second instruction are alternately executed by the fresh air fan, so that the risk of condensation at the fresh air outlet can be effectively reduced.
In one example of the present invention, if not, the rotational speed of the fresh air fan is adjusted according to the outdoor ambient temperature and the duration of the operation of the fresh air function.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the fan speed control device can realize the fine control of the rotation speed of the fresh air fan, avoid the condition that the rotation speed of the fresh air fan is adjusted to be too single and unreliable, and further reduce the occurrence of condensation at the air outlet of the fresh air fan.
In one example of the present invention, the adjusting the rotation speed of the fresh air fan according to the outdoor environment temperature and the duration of the operation of the fresh air function includes: when T2 is more than or equal to T5, controlling the fresh air fan to operate according to a first high wind gear; when T6 is less than or equal to T2 and less than T5, adjusting and reducing the running wind gear of the fresh air fan when the time length for running the fresh air function sequentially falls into different preset time intervals; when T7 is less than or equal to T2 and less than T6, adjusting and reducing the running wind gear of the fresh air fan when the time length for running the fresh air function sequentially falls into different preset time intervals; the fresh air fan runs for different times in the same air shield in different outdoor environment temperature intervals; wherein T2 is outdoor ambient temperature, and T5 is greater than 0 ℃; t6 is a third preset temperature value; t7 is a fourth preset temperature value.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: t5 may be, for example, 5 ℃, T6 may be 0 ℃, and T7 may be-5 ℃. When T2 is more than or equal to 5 ℃, it can be understood that when the fresh air function is only started, the difference between the outdoor environment temperature and the indoor environment temperature is smaller, and the temperature of 5 ℃ is a temperature point higher than 0 ℃, so that in the state, the fresh air fan can be operated in a first high-wind-speed state without worrying about the occurrence of condensation at the air outlet of the fresh air fan, and the fresh air purpose of replacing air in a short time can be achieved.
In one example of the present invention, the adjusting the rotation speed of the fresh air fan according to the outdoor environment temperature and the duration of the operation of the fresh air function further includes: when T8 is less than or equal to T2 and less than T7, controlling the fresh air fan to operate according to a low wind gear, and when the duration of operating the low wind gear is longer than a third preset time, controlling the rotating speed of the fresh air fan to be reduced to a fourth rotating speed, and controlling the fresh air fan to alternately execute a third instruction and a fourth instruction; the third instruction comprises running the fourth rotating speed at a sixth preset time, and the fourth instruction comprises keeping to stop running at a seventh preset time; and if T2 is less than T8, controlling the fresh air fan to stop running.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: further effectively reducing cold and hot junction efficiency at the air outlet of the fresh air fan so as to reduce condensation.
In another aspect, the present invention also provides a control device of an air conditioner, including: the control module is used for controlling the indoor unit of the air conditioner to run a fresh air function; the judging module is used for judging whether the air conditioner is controlled to operate the heat exchange function or not; if yes, the rotating speed of the fresh air fan of the indoor unit is adjusted according to the first condensation preventing condition; the first anti-condensation condition includes: the duration of the fresh air function is operated; or, the duration of running the fresh air function and the temperature difference between the indoor environment temperature and the outdoor environment temperature; the duration of the fresh air function is T, the indoor environment temperature is T1, the outdoor environment temperature is T2, the temperature difference is delta T, and delta T=T1-T2.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the technical effects corresponding to any one of the above technical schemes can be achieved, and will not be repeated here.
In still another aspect, the present invention further provides an air conditioner, including a controller for executing an executable program to implement the control method as described in any one of the above examples.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the technical effects corresponding to the control method in any of the above examples can be achieved, and will not be described herein.
After the technical scheme of the invention is adopted, the following technical effects can be achieved:
(1) On the one hand, when the user controls the air conditioner to simultaneously start the fresh air function and the heat exchange function, the rotation speed of the fresh air fan is adjusted by utilizing the preset first condensation prevention condition, so that the influence on the heat exchange efficiency of the heat exchange function caused by overlarge rotation speed of the fresh air fan is avoided, and the use experience of the user is prevented from being reduced; on the other hand, the frequency of condensation at the air outlet of the fresh air fan and near the edge can be effectively reduced by adjusting the rotating speed of the fresh air fan;
(2) The corresponding relation between t and the corresponding preset time interval is utilized to adjust the size of the wind shield of the fresh air fan, so that the phenomenon that the running instability of the air conditioner is easily caused by frequent rotation speed adjustment due to the fact that the rotation speed of the fresh air fan is adjusted at any time according to t is avoided.
Drawings
Fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart of the air conditioner under the condition of simultaneously operating the fresh air function and the heating function.
Fig. 3 is a schematic flow chart of the air conditioner under the condition of simultaneously operating the fresh air function and the refrigeration function.
Fig. 4 is a schematic flow chart of the air conditioner under the fresh air only function.
Fig. 5 is a schematic diagram of module connection of the control device.
Reference numerals illustrate:
100-a control device; 110-a control module; 120-judgment module.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Embodiment one:
referring to fig. 1, a flowchart of a control method of an air conditioner according to an embodiment of the invention is shown. The control method includes, for example:
s1, controlling an indoor unit of the air conditioner to operate a fresh air function.
S2, judging whether to control the air conditioner to operate the heat exchange function.
And S21, if the judgment result is yes, regulating the rotating speed of the fresh air fan of the indoor unit according to the first condensation prevention condition.
In connection with fig. 2-4, in one specific example, the heat exchange function includes, for example, a cooling function or a heating function. It will be appreciated that the fresh air function is merely a means of interacting air in the indoor environment with air in the outdoor environment so that fresh air is provided to the indoor environment. On the basis of opening the fresh air function, when the air conditioner is controlled to open the heat exchange function, the temperature difference between the indoor environment temperature and the outdoor environment temperature is increased, namely the occurrence times of condensation caused by long-time cold and hot intersection are increased at the fresh air outlet and the edge position nearby the fresh air outlet, and even the problem of condensation aggregation and dripping is solved, so that after-sales complaints are caused, and the problem of user use experience is reduced.
Further, under the new trend function, the efficiency of changing indoor environment air and outdoor environment air is correlated with the rotational speed of new trend fan, generally, the rotational speed of new trend fan is bigger, then make the efficiency of changing the air higher, but, when the user opens new trend function and heat transfer function simultaneously, just need consider the heat exchange efficiency under the heat transfer function, if make the rotational speed of new trend fan too big, then can lead to the heat exchange efficiency to reduce, specifically, when the rotational speed of new trend fan is too big, then can make the air of the indoor environment through heat transfer processing send out to outdoor environment, and at the same time, under the effect of new trend function, send the air in the outdoor environment into indoor environment again, and then cause the user to be in for a long time with the indoor environment that outdoor environment temperature is close, also prolonged promptly and make indoor environment temperature reach the time of presetting, thereby make user's travelling comfort reduce, in addition, still will lead to the whole availability factor of air conditioner to reduce. The heat exchange function is, for example, a refrigerating or heating function.
Therefore, by combining the technical scheme, on one hand, when a user controls the air conditioner to simultaneously start the fresh air function and the heat exchange function, the rotation speed of the fresh air fan is adjusted by utilizing the preset first condensation prevention condition, so that the influence on the heat exchange efficiency of the heat exchange function caused by overlarge rotation speed of the fresh air fan is avoided, and the use experience of the user is prevented from being reduced; on the other hand, the number of times that condensation appears near fresh air fan air outlet and edge has still been effectively reduced through the rotational speed to fresh air fan to be adjusted.
Preferably, the first anti-condensation condition includes, for example, a period of time in which the fresh air function is operated; or the time length of running the fresh air function and the temperature difference between the indoor environment temperature and the outdoor environment temperature, namely the time length of running the fresh air function and the temperature difference. The fresh air function is operated for a period of time T, the indoor environment temperature is T1, the outdoor environment temperature is T2, the temperature difference is delta T, and delta T=T1-T2.
In a specific example, when the first condensation preventing condition includes T and Δt, as T increases, the more the air of the indoor environment is replaced, the longer the operation time of the heat exchanging function will be, so that the overall efficiency of the air conditioner is ensured, and the rotation speed of the fresh air fan is simultaneously restricted by T and Δt. For example, the heat exchange function may be a heating function, so, at the initial operation stage of the air conditioner, Δt is smaller, so that in order to facilitate air exchange of indoor and outdoor environments in a short time, the condition that condensation occurs at the air outlet of the fresh air fan due to long-term operation of the fresh air function is avoided, the rotation speed of the fresh air fan can be adjusted to a high air level, meanwhile, Δt is made to be larger and larger under the effect of the heat exchange function, that is, the temperature difference between the outdoor environment temperature and the indoor environment temperature is increased, if the temperature difference between the outdoor environment temperature and the indoor environment temperature is increased, the fresh air fan is still kept to operate in the high air level at this time, the duration of cold and hot junctions at the air outlet of the fresh air fan and the positions near the fresh air fan is easy to be aggravated, and the condensation phenomenon is easy to occur. Therefore, in order to ensure that the user obtains good use experience, the rotation speed of the fresh air fan can be reduced along with the increase of the delta T, and simultaneously, the rotation speed of the fresh air fan needs to be reduced in combination with the increase of the running time, so that the fresh air function and the heating function are balanced, and the overall efficiency of the air conditioner is ensured.
Preferably, the fresh air fan can be adjusted to be in a corresponding wind gear according to the fact that t falls into different preset time intervals. The corresponding relation between t and the corresponding preset time interval is utilized to adjust the size of the wind shield of the fresh air fan, so that the phenomenon that the running instability of the air conditioner is easily caused by frequent rotation speed adjustment due to the fact that the rotation speed of the fresh air fan is adjusted at any time according to t is avoided.
Preferably, when the first anti-condensation condition includes T and Δt; the rotating speed of the fresh air fan of the indoor unit is adjusted according to the first condensation preventing condition, and the rotating speed comprises:
s211, when t is less than or equal to t0, adjusting a first wind shield of the fresh air fan to run;
s221, when T is more than T0, if |DeltaT| is less than or equal to T3, regulating the fresh air fan to keep the first wind gear to run;
s222, when T is more than T0, if |DeltaT| is more than T3, regulating and reducing the fresh air fan to a second wind gear for operation;
wherein T0 is a first preset time, |ΔT| is an absolute temperature value of the temperature difference, and T3 is a first preset temperature difference.
In one embodiment, t0 may be 1 hour, and the unit of hour may be denoted as H, so as to avoid resonance noise generated between the fresh air fan and the circulating fan of the air conditioner during operation of the fresh air fan, and make the first wind shield be the middle wind shield. T3 is taken to be 15 ℃, so when delta T is less than or equal to 15 ℃, the temperature difference between the indoor environment temperature and the outdoor environment temperature is still smaller, and the middle wind shield operation can be continuously kept; when T > 1H, it means that the fresh air fan has been operated for more than 1H in the middle wind gear state, so that Δt is increased in combination with the heating function under the heating function, for example, when Δt > 15 ℃, the wind gear needs to be turned down, that is, in the second wind gear state, for example, the low wind gear. Therefore, through the accurate regulation and control of the rotation speed of the fresh air fan, when the large temperature difference between the indoor environment and the outdoor environment is avoided, the fresh air fan still keeps the middle wind gear to operate, the condition that condensation appears near the air outlet of the fresh air fan or even the condensation gathers and drips is aggravated, meanwhile, when the delta T is in a large or small state, the fresh air fan operates with the same large wind gear, so that when the delta T is large, more temperature of the indoor environment is taken away, the heat exchange efficiency is reduced, and the user experience is reduced.
Preferably, adjusting the rotation speed of the fresh air fan of the indoor unit according to the first condensation preventing condition further includes:
s223, when t1 is less than t2, controlling the fresh air fan to continuously keep the second wind gear to operate; and t1 is the second wind gear running time of the fresh air fan, and t2 is a second preset time.
For example, t2 is preferably 2H, so it is understood that when t1 < 2H, this means that the time for the fresh air fan to operate in the low wind speed state is less than 2H, so that the rotation speed of the fresh air fan is prevented from being frequently adjusted to ensure the overall operation efficiency, and the fresh air fan is kept to operate in the low wind speed state.
Preferably, adjusting the rotation speed of the fresh air fan of the indoor unit according to the first condensation preventing condition further includes:
s224, when T1 is more than or equal to T2, if T3 is less than or equal to |DeltaT| is less than or equal to T4, controlling the rotating speed of the fresh air fan to be reduced to a third rotating speed, and keeping the fresh air fan to operate at the third rotating speed; wherein T4 is a second preset temperature difference value;
s225, if the absolute delta T is more than T4, controlling the rotating speed of the fresh air fan to be reduced to the third rotating speed, and controlling the fresh air fan to alternately execute a first instruction and a second instruction; the first instruction includes running the third rotational speed for a fourth preset time, and the second instruction includes keeping stopped running for a fifth preset time.
In one embodiment, the fourth preset time is preferably 2H, and the fifth preset time may be 0.5H, and T4 is preferably 25 ℃. Thus, when 15 ℃ is less than or equal to |DeltaT| is less than or equal to 25 ℃, which means that the temperature difference between the indoor environment temperature and the outdoor environment temperature is larger at this time, and at this time, the running time of the fresh air fan in the low wind gear state is already more than 2H, it can be considered that the cold and hot junction at the air outlet of the fresh air fan is easy to generate the condensation phenomenon, and then the rotating speed corresponding to the low wind gear can be further reduced to the third rotating speed so as to reduce the probability of occurrence of the condensation condition, in particular, the rotating speed can be controlled to be reduced to 100r/min according to the uniform speed of 100r/0.5H, and the rotating speed is maintained to run. The rotation speed is reduced uniformly, so that the whole air conditioner is in a stable state.
Further, in combination with the above embodiment, when |Δt| is greater than 25 ℃, the first instruction and the second instruction are alternately executed by using the fresh air fan, so that the risk of condensation at the fresh air outlet can be effectively reduced. Specifically, when |Δt| > T4, it means that the indoor and outdoor temperature difference is too large, and the rotation speed of the fresh air fan needs to be adjusted to be reduced to increase, so as to avoid condensation at the air outlet of the fresh air fan when the fresh air fan operates at a relatively high rotation speed. Therefore, the control rotating speed can be reduced to 100r/min at an average speed according to the amplitude of 200r/0.5H, and the fresh air fan is controlled to stop for 0.5H when the fresh air fan runs for 2H, so that the fresh air fan runs periodically and alternately.
It should be noted that the heat exchange function may also be a refrigeration function, and specifically, the control logic of the refrigeration function and the heating function is the same, which is not described herein.
Preferably, S23, when the result of determining whether to control the air conditioner to operate the heat exchange function is no, the rotation speed of the fresh air fan is adjusted according to the outdoor ambient temperature and the duration of operating the fresh air function. The fine control of the rotating speed of the fresh air fan can be realized.
Preferably, adjusting the rotational speed of the fresh air fan according to the outdoor ambient temperature and the duration of the fresh air function includes: when the outdoor environment temperature enters a corresponding preset temperature interval, the outdoor environment temperature sequentially falls into different preset time intervals according to the duration of running the fresh air function so as to control the running gear of the fresh air fan to be reduced; and/or when the outdoor environment temperature is in different preset temperature intervals, controlling the fresh air fan to operate for different times in the same wind screen.
Preferably, adjusting the rotational speed of the fresh air fan according to the outdoor ambient temperature and the duration of the fresh air function includes:
s231, when T2 is more than or equal to T5, controlling the fresh air fan to operate according to a first high wind gear;
s232, when T6 is less than or equal to T2 and less than T5, adjusting and reducing the wind gear of the fresh air fan when the duration of running the fresh air function sequentially falls into different preset time intervals;
s233, when T7 is less than or equal to T2 and less than T6, adjusting and reducing the wind level of the fresh air fan when the duration of the fresh air function falls into different preset time intervals in sequence; the fresh air fan runs for different times in the same air shield in different outdoor environment temperature intervals; wherein T2 is outdoor environment temperature, and T5 is a temperature point higher than 0 ℃; t6 is a third preset temperature value; t7 is a fourth preset temperature value.
Specifically, the lower the temperature corresponding to the outdoor environment temperature interval in which the outdoor environment temperature falls, the shorter the time for controlling the fresh air fan to operate the same wind screen. In one embodiment, T5 may be, for example, 5 ℃, T6 may be 0 ℃, and T7 may be-5 ℃. When T2 is more than or equal to 5 ℃, it can be understood that when the fresh air function is only started, the difference between the outdoor environment temperature and the indoor environment temperature is smaller, and the temperature of 5 ℃ is higher than the condensation temperature point at the moment, so that the fresh air fan can be operated in the first high-wind-gear state in the state without worrying about the occurrence of condensation at the air outlet of the fresh air fan, and the fresh air aim of replacing air in a short time can be fulfilled.
Furthermore, when T2 is more than or equal to 0 ℃ and less than 5 ℃, the indoor environment is considered to be the indoor environment, and the indoor environment is relatively the outdoor environment, namely, when T2 is smaller, the temperature difference between the indoor environment and the indoor environment is larger, and at the moment, the temperature difference is equal to the condensation temperature in the temperature interval of the temperature of 0 ℃ and 5 ℃, so that condensation is easy to appear near the air outlet of the fresh air fan in long-time operation, and then, the cold and hot junction efficiency can be effectively reduced by reducing the air shield, thereby reducing the condensation. For example, when t < 4H, the operation is performed according to a high wind gear; when t is less than or equal to 4H and less than 8H, the device operates according to the stroke gear; when t is more than or equal to 8H, the automobile is operated according to a low wind gear.
Further, when T2 is less than or equal to minus 5 ℃ and less than 0 ℃, the same principle as the above is adopted, and the outdoor environment temperature is lower, and at the moment, delta T is larger than the above, the wind shield is required to be adjusted in time, so that the risk of condensation is avoided to be increased when the same wind shield is kept for a long time. Specifically, for example, the user sets that the running time of the fresh air fan is shorter than 0.5H, that is, when t is smaller than 0.5H, the fresh air fan runs according to a high wind gear; when t is more than or equal to 0.5H and less than 2H, the automobile runs according to a stroke gear; when t is more than or equal to 2H, the automobile is operated according to a low wind gear.
For example, when the outdoor environment temperature falls within a temperature range of-5 ℃ and 0 ℃ and a preset time range corresponding to the same wind level of the fresh air fan is different from a temperature range of 0 ℃ and 5 ℃, specifically, when the outdoor environment temperature is-3 ℃, that is, when the outdoor environment temperature falls within a temperature range of-5 ℃ and 0 ℃, the preset time range of the fresh air fan for operating the high wind level is, for example, 0-0.5H, and then when the user presets the time for operating the fresh air function to be 0.3H, the condition of operating the high wind level is satisfied, and then the fresh air fan is controlled to operate in the high wind level. Correspondingly, when the outdoor environment temperature is taken to be 3 ℃, namely the temperature of 3 ℃ falls into the temperature interval of 0 ℃ and 5 ℃, the fresh air fan is taken to be 0-4H for example in the preset time interval of the high wind gear, and then when the time for running the fresh air function is set to be 1H by a user, the condition for running the high wind gear is met, and then the fresh air fan is controlled to run under the high wind gear.
Similarly, when T6 is less than or equal to T2 and less than T5, for example, the preset time interval of the fresh air fan meeting the running wind gear is between 4H and 8H, when the time of the fresh air function is set between 4H and 8H by a user, the condition of the running wind gear is met, the fresh air fan is controlled to run in the middle wind gear, in addition, the preset time interval of the running low wind gear is more than or equal to 8H, and then when the time of the running fresh air function is set to be more than or equal to 8H by the user, the condition of the running low wind gear is met, and then the fresh air fan is controlled to run in the low wind gear.
On the contrary, when T7 is less than or equal to T2 and less than T6, for example, the fresh air fan can be taken to meet the condition that the preset time interval of the running fresh air fan is between 0.5H and 2H, when the time of the running fresh air fan is set to be between 0.5H and 2H, the condition of the running fresh air fan is met, the fresh air fan is controlled to run in the middle wind gear, in addition, the preset time interval of the running low wind gear is taken to be more than or equal to 2H, and then, when the time of the running fresh air fan is set to be more than or equal to 2H, the condition of the running low wind gear is met, and then the fresh air fan is controlled to run in the low wind gear.
Preferably, adjusting the rotation speed of the fresh air fan according to the outdoor environment temperature and the duration of the fresh air function further comprises:
s234, when T8 is less than or equal to T2 and less than T7, controlling the fresh air fan to operate according to a low wind gear which is smaller than a first high wind gear, and when the duration of operating the low wind gear is longer than a third preset time, controlling the rotating speed of the fresh air fan to be reduced to a fourth rotating speed, and controlling the fresh air fan to alternately execute a third instruction and a fourth instruction; the third command includes operating the fourth rotational speed for a sixth preset time, and the fourth command includes maintaining the stopping operation for a seventh preset time.
In one embodiment, T8 may be, for example, -15 ℃, the third preset time is 2H, the sixth time is 2H, and the seventh preset time is 0.5H. When t is more than or equal to 2H, the low wind gear rotating speed can be controlled to be reduced to 100r/min at a constant speed of 200r/0.5H, the rotating speed is maintained to run, and the fresh air fan is stopped for 0.5H every 2H running, so that the operation is repeated. It can be understood that the third instruction and the fourth instruction are alternately executed by controlling the fresh air fan, so that cold and hot junction efficiency is effectively reduced, and condensation is reduced.
S235, if T2 is less than T8, controlling the fresh air fan to stop running.
Embodiment two:
fig. 5 is a schematic block diagram of a control device 100 according to a second embodiment of the present invention. The control device 100 includes, for example, a control module 110 and a judgment module 120. The control module 110 is used for controlling an indoor unit of the air conditioner to operate a fresh air function; the judging module 120 is used for judging whether to control the air conditioner to operate the heat exchange function; if the judgment result is yes, the rotating speed of the fresh air fan of the indoor unit is adjusted according to the first condensation condition; the first anti-condensation condition includes: the duration of running the fresh air function; or, the duration of running the fresh air function and the temperature difference between the indoor environment temperature and the outdoor environment temperature; the duration of the fresh air running function is T, the indoor environment temperature is T1, the outdoor environment temperature is T2, the temperature difference is delta T, and delta T=T1-T2.
Specifically, the technical effects of any technical scheme corresponding to the first embodiment can be achieved in this embodiment, and will not be described herein.
Embodiment III:
the third embodiment provides an air conditioner, for example, the air conditioner includes a controller, and the controller is configured to execute an executable program to implement the control method as in the first embodiment.
Specifically, the technical effects corresponding to any technical scheme in the first embodiment can be achieved in this embodiment, and will not be described herein.
Although the present invention is disclosed above, the present invention is not limited thereto. 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 (5)

1. A control method of an air conditioner, comprising:
controlling an indoor unit of the air conditioner to run a fresh air function;
judging whether to control the air conditioner to operate a heat exchange function;
if yes, the rotating speed of a fresh air fan of the indoor unit is adjusted according to the first condensation preventing condition;
wherein the first anti-condensation condition comprises: the duration of running the fresh air function and the temperature difference between the indoor environment temperature and the outdoor environment temperature; the duration of running the fresh air function is T, the indoor environment temperature is T1, the outdoor environment temperature is T2, the temperature difference is delta T, and delta T=T1-T2;
when the first anti-condensation condition includes T and Δt; the adjusting the rotating speed of the fresh air fan of the indoor unit according to the first condensation preventing condition comprises the following steps:
when t is less than or equal to t0, regulating the fresh air fan to operate a first wind shield;
when T is more than T0, if |delta T| is less than or equal to T3, regulating the fresh air fan to keep the first wind gear to operate; if the absolute delta T is more than T3, regulating and reducing the fresh air fan to a second wind gear for operation;
wherein T0 is a first preset time, |ΔT| is an absolute temperature value of the temperature difference, and T3 is a first preset temperature difference value;
the adjusting the rotating speed of the fresh air fan of the indoor unit according to the first condensation preventing condition further comprises:
when t1 is less than t2, the fresh air fan is controlled to continue to keep the second wind gear to run;
wherein t1 is the second wind gear operation time of the fresh air fan, and t2 is a second preset time;
when T1 is more than or equal to T2, if T3 is less than or equal to |DeltaT| is less than or equal to T4, controlling the rotating speed of the fresh air fan to be reduced to a third rotating speed, and keeping the fresh air fan to operate at the third rotating speed; wherein, T4 is a second preset temperature difference value;
if the absolute delta T is more than T4, controlling the rotating speed of the fresh air fan to be reduced to the third rotating speed, and controlling the fresh air fan to alternately execute a first instruction and a second instruction; the first instruction comprises running the third rotating speed at a fourth preset time, and the second instruction comprises keeping to stop running at a fifth preset time;
if not, the rotating speed of the fresh air fan is adjusted according to the outdoor environment temperature and the duration of running the fresh air function.
2. The control method according to claim 1, wherein the adjusting the rotational speed of the fresh air fan according to the outdoor ambient temperature and the duration of the operation of the fresh air function includes:
when T2 is more than or equal to T5, controlling the fresh air fan to operate according to a first high wind gear;
when T6 is less than or equal to T2 and less than T5, adjusting and reducing the running wind gear of the fresh air fan when the time length for running the fresh air function sequentially falls into different preset time intervals;
when T7 is less than or equal to T2 and less than T6, adjusting and reducing the running wind gear of the fresh air fan when the time length for running the fresh air function sequentially falls into different preset time intervals; the fresh air fan runs for different times in the same air shield in different outdoor environment temperature intervals;
wherein T2 is outdoor ambient temperature, and T5 is greater than 0 ℃; t6 is a third preset temperature value; t7 is a fourth preset temperature value.
3. The control method according to claim 2, wherein the adjusting the rotational speed of the fresh air fan according to the outdoor ambient temperature and the duration of the operation of the fresh air function further comprises:
when T8 is less than or equal to T2 and less than T7, controlling the fresh air fan to operate according to a low wind gear, and when the duration of operating the low wind gear is longer than a third preset time, controlling the rotating speed of the fresh air fan to be reduced to a fourth rotating speed, and controlling the fresh air fan to alternately execute a third instruction and a fourth instruction; the third instruction comprises running the fourth rotating speed at a sixth preset time, and the fourth instruction comprises keeping to stop running at a seventh preset time;
and if T2 is less than T8, controlling the fresh air fan to stop running.
4. A control device of an air conditioner, characterized in that the control device adopts the control method according to claim 1; the control device includes:
the control module (110) is used for controlling the indoor unit of the air conditioner to operate a fresh air function;
the judging module (120) is used for judging whether to control the air conditioner to operate a heat exchange function or not;
if yes, the rotating speed of the fresh air fan of the indoor unit is adjusted according to the first condensation preventing condition; the first anti-condensation condition includes: the duration of running the fresh air function and the temperature difference between the indoor environment temperature and the outdoor environment temperature; the duration of the fresh air function is T, the indoor environment temperature is T1, the outdoor environment temperature is T2, the temperature difference is delta T, and delta T=T1-T2.
5. An air conditioner comprising a controller for executing an executable program to implement the control method of any one of claims 1 to 3.
CN202210564628.9A 2022-05-23 2022-05-23 Control method and control device of air conditioner and air conditioner Active CN114838483B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102045982A (en) * 2009-10-19 2011-05-04 谢逢华 Special energy-saving air conditioner of communication room
CN104456774A (en) * 2013-09-13 2015-03-25 江南大学 Heat humidity independently controlled air conditioning system applied to IDC machine room and refrigeration method
CN109764493A (en) * 2019-03-03 2019-05-17 广东美的制冷设备有限公司 Air conditioner and its control method and computer readable storage medium
CN110044014A (en) * 2019-04-28 2019-07-23 广东美的制冷设备有限公司 Air conditioner and its control method and computer readable storage medium
CN114353251A (en) * 2022-01-10 2022-04-15 Tcl空调器(中山)有限公司 Air conditioner fresh air control method and device, computer equipment and storage medium

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10520213B2 (en) * 2017-10-27 2019-12-31 Haier Us Appliance Solutions, Inc. Air conditioner units and methods of operation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102045982A (en) * 2009-10-19 2011-05-04 谢逢华 Special energy-saving air conditioner of communication room
CN104456774A (en) * 2013-09-13 2015-03-25 江南大学 Heat humidity independently controlled air conditioning system applied to IDC machine room and refrigeration method
CN109764493A (en) * 2019-03-03 2019-05-17 广东美的制冷设备有限公司 Air conditioner and its control method and computer readable storage medium
CN110044014A (en) * 2019-04-28 2019-07-23 广东美的制冷设备有限公司 Air conditioner and its control method and computer readable storage medium
CN114353251A (en) * 2022-01-10 2022-04-15 Tcl空调器(中山)有限公司 Air conditioner fresh air control method and device, computer equipment and storage medium

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