CN114838483A - 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 PDFInfo
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- CN114838483A CN114838483A CN202210564628.9A CN202210564628A CN114838483A CN 114838483 A CN114838483 A CN 114838483A CN 202210564628 A CN202210564628 A CN 202210564628A CN 114838483 A CN114838483 A CN 114838483A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- 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 operate a fresh air function; judging whether to control the air conditioner to operate a heat exchange function or not; and if so, adjusting the rotating speed of a fresh air fan of the indoor unit according to the first condensation preventing condition. The invention solves the technical problem that condensation of a fresh air outlet is reduced while the air conditioner is difficult to give consideration to comfort of a user because other modes such as a heat exchange function are operated when the air conditioner operates the fresh air function.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and a control device of an air conditioner and the air conditioner.
Background
With the continuous development of society, the pursuit of people for the quality of life is also continuously improved. The fresh air conditioner on the market at present brings fresh air for users, and also because when using for a long time, the fresh air outlet condensation problem easily appears, causes the after-sale complaint.
Specifically speaking, when the air conditioner is running the new trend function, other modes of operation simultaneously, for example heat transfer function lead to being difficult to compromise and make the user feel comfortable the time, reduce the problem of new trend air outlet condensation.
Disclosure of Invention
The invention solves the technical problem that condensation of a fresh air outlet is reduced while the air conditioner is difficult to give consideration to comfort of a user because other modes such as a heat exchange function are operated when the air conditioner operates the fresh air function.
In order to solve the above problems, the present invention provides a method for controlling an air conditioner, comprising: controlling an indoor unit of the air conditioner to operate a fresh air function; judging whether to control the air conditioner to operate a heat exchange function or not; if so, adjusting the rotating speed of a fresh air fan of the indoor unit according to a first condensation preventing condition; wherein the first anti-condensation condition comprises: the duration of the operation of the fresh air function; or the time length for operating the fresh air function and the temperature difference between the indoor environment temperature and the outdoor environment temperature; the time length 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 the delta T is T1-T2.
Compared with the prior art, the technical scheme has the following technical effects: on one hand, when the user controls the air conditioner to start the fresh air function and the heat exchange function at the same time, the rotating speed of the fresh air fan is adjusted by utilizing the preset first condensation preventing condition, so that the influence on the heat exchange efficiency of the heat exchange function due to the overlarge rotating 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 rotating speed of the fresh air fan can be adjusted, and the frequency of occurrence of condensation at the air outlet of the fresh air fan and near the edge is effectively reduced. It is specific, the heat transfer function can be for the function of heating for example, then, at the air conditioner initial operation stage, delta T is less, for the convenience accomplish the air change to indoor outer environment in the short time, avoid new trend function long-term operation and lead to the condensation condition to appear in new trend fan air outlet department, can make the rotational speed of new trend fan adjust to high wind gear, and simultaneously, under the effect of heat transfer function, make delta T bigger and bigger, also make outdoor ambient temperature and indoor ambient temperature's the increase of difference, if this moment still keep the new trend fan at high wind gear operation, the duration that the cold and hot intersection of easy aggravation new trend fan air outlet and near position, thereby the condensation phenomenon easily takes place. Therefore, in order to ensure that a user obtains good use experience, the rotating speed of the fresh air fan can be reduced along with the increase of the delta T, and meanwhile, the rotating speed of the fresh air fan also needs to be reduced in combination with the increase of the operation 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 condition that t falls into different preset time intervals.
Compared with the prior art, the technical scheme has the following technical effects: the wind gear size of the fresh air fan is adjusted by utilizing the corresponding relation between t and the corresponding preset time interval, so that the condition that the instability of the operation of the air conditioner is easily caused by frequently adjusting the rotating speed due to the fact that the rotating speed of the fresh air fan is adjusted constantly according to t is avoided.
In one example of the present invention, when the first anti-condensation condition includes T and Δ T; the adjusting the rotating speed of the fresh air fan of the indoor unit according to the first anti-condensation condition comprises the following steps: when t is less than or equal to t0, adjusting the fresh air fan to operate a first wind gear; when T is more than T0, if | delta T | ≦ T3, adjusting the fresh air fan to keep the first wind gear running; if the absolute value delta T is greater than T3, the operation of the fresh air fan to a second wind gear is reduced by adjustment; wherein T0 is a first preset time, | Δ T | 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 scheme has the following technical effects: for example, t0 may be 1 hour, and the hour unit may be denoted as H, and the first wind level may be a middle wind level in order to avoid resonance noise generated between the fresh air fan and the circulating fan of the air conditioner during operation. T3 is taken as 15 ℃, so that 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 small at the moment, and the medium wind operation can be continuously kept; when T is greater than 1H, it means that the fresh air fan has been operated in the middle wind range state for more than 1H, so that, for example, the heat exchanging function is a heating function, and Δ T is increased under the heating function of the heating function, for example, when Δ T is greater than 15 ℃, the wind range needs to be adjusted down, that is, in the second wind range state, for example, the wind range is low. Then, through the accurate regulation and control of the rotational speed to the new trend fan, when having avoided appearing the great difference in temperature between indoor outer environment, still make the new trend fan keep the well wind shelves operation and aggravate near the new trend fan air outlet and appear condensation or even the condensation collects the condition that drips, also can avoid delta T to be in when great or less state simultaneously, the new trend fan all runs with the same great wind shelves, cause when delta T is great, take away the more temperature of indoor environment, and reduce heat exchange efficiency, reduce the comfortable experience of user.
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 anti-condensation condition further includes: when t1 is less than t2, controlling the fresh air fan to continuously keep the second wind level to operate; and t1 is the running time of the new air fan for keeping the second wind gear, and t2 is the second preset time.
Compared with the prior art, the technical scheme has the following technical effects: in order to ensure the overall operation efficiency, the frequent adjustment of the rotating speed of the fresh air fan is avoided, and the fresh air fan is kept 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 anti-condensation condition further includes: when T1 is more than or equal to T2, if T3 is less than | delta T | ≦ T4, controlling the rotation speed of the fresh air fan to be reduced to a third rotation speed, and keeping the operation at the third rotation speed; wherein, the T4 is a second preset temperature difference value; if the absolute value delta T is greater 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 operating the third rotating speed for a fourth preset time, and the second instruction comprises keeping the third rotating speed stopped 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 may be taken to be 25 ℃. Therefore, when the temperature is more than 15 ℃ and less than | delta T | < 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 exceeds 2H at the moment, the condensation phenomenon is easy to occur in the condensation intersection at the air outlet of the fresh air fan, so that the rotating speed corresponding to the low wind gear can be further reduced to a third rotating speed, and the probability of the condensation condition is reduced; in addition, when | delta T | > 25 ℃, utilize the new trend fan to carry out first instruction and second instruction in turn, can effectively reduce the risk that the new trend air outlet condensation takes place.
In one embodiment of the invention, if not, the rotation speed of the fresh air fan is adjusted according to the outdoor environment temperature and the time length for operating the fresh air function.
Compared with the prior art, the technical scheme has the following technical effects: can realize the control that becomes more meticulous to the new trend fan rotational speed, avoid carrying out too single and unreliable of condition of adjusting the new trend fan rotational speed, and then can further reduce and take place the condensation in new trend fan air outlet department.
In an embodiment of the present invention, the adjusting the rotation speed of the fresh air fan according to the outdoor environment temperature and the time length for operating the fresh air function includes: when the T2 is more than or equal to T5, controlling the fresh air fan to operate according to a first high wind gear; when the T6 is not less than T2 and is less than T5, adjusting and reducing the wind gear of the operation of the fresh air fan when the time length of the operation of the fresh air function falls into different preset time intervals in sequence; when the T7 is not less than T2 and is less than T6, adjusting and reducing the wind gear of the operation of the fresh air fan when the time length of the operation of the fresh air function falls into different preset time intervals in sequence; the fresh air fan operates in the same wind gear within different outdoor environment temperature intervals in different time; wherein T2 is outdoor ambient temperature, 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 scheme has the following technical effects: t5 may be, for example, 5 ℃, T6 may be 0 ℃ and T7 may be-5 ℃. When the temperature T2 is more than or equal to 5 ℃, it can be understood that when only the fresh air function is started, the difference between the outdoor environment temperature and the indoor environment temperature is small, and the temperature at the time 5 ℃ is a temperature point higher than 0 ℃, so that in the state, the fresh air fan can operate in a state of a first high wind level without worrying about the occurrence of condensation at the air outlet of the fresh air fan, and the purpose of replacing the fresh air of the air can be achieved in a short time.
In an embodiment of the present invention, the adjusting the rotation speed of the fresh air blower according to the outdoor environment temperature and the time length for operating the fresh air function further includes: when T8 is not less than T2 and is less than T7, controlling the fresh air fan to operate according to a low wind gear, and when the time for operating the low wind gear is longer than a third preset time, controlling the rotation speed of the fresh air fan to be reduced to a fourth rotation speed, and controlling the fresh air fan to alternately execute a third instruction and a fourth instruction; the third instruction comprises operating the fourth rotating speed for a sixth preset time, and the fourth instruction comprises keeping the fourth rotating speed stopped for 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 reduce the cold and hot efficiency of crossing of new trend fan air outlet department to reduce the condensation.
In another aspect, the present invention also provides a control apparatus for an air conditioner, including: the control module is used for controlling the indoor unit of the air conditioner to operate a fresh air function; the judging module is used for judging whether to control the air conditioner to operate the heat exchange function or not; if so, adjusting the rotating speed of a fresh air fan of the indoor unit according to a first anti-condensation condition; the first anti-condensation condition comprises: the duration of the operation of the fresh air function; or the time length for operating the fresh air function and the temperature difference between the indoor environment temperature and the outdoor environment temperature; the time length 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 the delta T is T1-T2.
Compared with the prior art, the technical scheme has the following technical effects: the technical effects corresponding to any of the above technical solutions can be achieved, and details are not repeated here.
In still another aspect, the present invention further provides an air conditioner, including a controller, wherein the controller is configured to execute an executable program to implement the control method according to any one of the above examples.
Compared with the prior art, the technical scheme has the following technical effects: technical effects corresponding to the control method in any of the above examples can be achieved, and are not described herein again.
After the technical scheme of the invention is adopted, the following technical effects can be achieved:
(1) on one hand, when the user controls the air conditioner to start the fresh air function and the heat exchange function at the same time, the rotating speed of the fresh air fan is adjusted by utilizing the preset first condensation preventing condition, so that the influence on the heat exchange efficiency of the heat exchange function due to the overlarge rotating 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 and near the edge of the fresh air fan can be effectively reduced by adjusting the rotating speed of the fresh air fan;
(2) the wind gear size of the fresh air fan is adjusted by utilizing the corresponding relation between t and the corresponding preset time interval, so that the condition that the instability of the operation of the air conditioner is easily caused by frequently adjusting the rotating speed due to the fact that the rotating speed of the fresh air fan is adjusted constantly according to t is avoided.
Drawings
Fig. 1 is a flowchart illustrating 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 simultaneous operation of 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 only operating the fresh air function.
Fig. 5 is a schematic diagram of module connection of the control device.
Description of reference numerals:
100-a control device; 110-a control module; 120-a judgment module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The first embodiment is as follows:
referring to fig. 1, a flowchart of a control method of an air conditioner according to an embodiment of the present invention is shown. The control method includes, for example:
and S1, controlling the indoor unit of the air conditioner to run a fresh air function.
And S2, judging whether to control the air conditioner to operate the heat exchange function.
And S21, if the judgment result is yes, adjusting the rotation speed of the fresh air fan of the indoor unit according to the first anti-condensation condition.
In one embodiment, in conjunction with fig. 2-4, 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 from the indoor environment with air from the outdoor environment so as to provide fresh air to the indoor environment. On the basis of opening the new trend function, when the air conditioner is controlled again and the heat transfer function is opened, can make the difference in temperature increase between indoor ambient temperature and the outdoor ambient temperature, also make new trend air outlet and near marginal position increase because the long-time cold and hot frequency of appearance that produces the condensation condition that intersects, the problem that the condensation gathering and the drippage appears even to cause after-sale complaint and reduce the problem that the user used the experience.
Further, under the fresh air function, the efficiency of replacing indoor ambient air and outdoor ambient air is related to the rotating speed of the fresh air fan, generally, the efficiency of replacing air is higher when the rotating speed of the fresh air fan is larger, but in combination with the actual use process, when a user simultaneously starts the fresh air function and the heat exchange function, the heat exchange efficiency under the heat exchange function needs to be considered, if the rotating speed of the fresh air fan is too large, the heat exchange efficiency is reduced, specifically, when the rotating speed of the fresh air fan is too large, the air in the indoor environment after heat exchange treatment is sent out to the outdoor environment, meanwhile, under the action of the fresh air function, the air in the outdoor environment is sent into the indoor environment again, so that the user is in the indoor environment with the temperature close to the outdoor environment for a long time, and the time for enabling the indoor environment temperature to reach the preset temperature is also prolonged, so that the comfort of the user is reduced and, in addition, the overall use efficiency of the air conditioner is also reduced. The heat exchange function is, for example, a cooling or heating function.
Therefore, by combining the content of the technical scheme, on one hand, when the user controls the air conditioner to simultaneously start the fresh air function and the heat exchange function, the rotating speed of the fresh air fan can be adjusted by utilizing the preset first condensation preventing condition, so that the influence on the heat exchange efficiency of the heat exchange function due to the overlarge rotating 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 rotating speed of the fresh air fan can be adjusted, and the frequency of occurrence of condensation at the air outlet of the fresh air fan and near the edge is effectively reduced.
Preferably, the first anti-condensation condition includes, for example, a length of time for which a fresh air function is operated; or the time length for operating the fresh air function and the temperature difference between the indoor environment temperature and the outdoor environment temperature are also the time length and the temperature difference for operating the fresh air function. The time length 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 the delta T is T1-T2.
In a concrete example, when first anti-condensation condition includes T and delta T, when the air conditioner opened new trend function and heat transfer function simultaneously, along with the increase of T for more to the air change of indoor environment, simultaneously, also will make the operating time of heat transfer function longer, in order to make the whole efficiency of air conditioner obtain guaranteeing, make the rotational speed of new trend fan adjust and receive T and delta T's restraint simultaneously. For example, the heat transfer function can be for example the function of heating, then, at the air conditioner initial operation stage, Δ T is less, be convenient for accomplish the air change to indoor outer environment in the short time, avoid the new trend function to operate for a long time and lead to the condensation condition to appear in new trend fan air outlet department, can make the rotational speed of new trend fan adjust to high wind shelves, meanwhile, under the effect of heat transfer function, make Δ T bigger and bigger, also make the difference in temperature increase of outdoor ambient temperature and indoor ambient temperature, if it is this moment still keep the new trend fan to operate at high wind shelves, easily aggravate the duration that the cold and hot of new trend fan air outlet and near position intersected, thereby easily take place the condensation phenomenon. Therefore, in order to ensure that a user obtains good use experience, the rotating speed of the fresh air fan can be reduced along with the increase of the delta T, and meanwhile, the rotating speed of the fresh air fan also needs to be reduced in combination with the increase of the operation 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 different preset time intervals of t. The wind gear size of the fresh air fan is adjusted by utilizing the corresponding relation between t and the corresponding preset time interval, so that the condition that the instability of the operation of the air conditioner is easily caused by frequently adjusting the rotating speed due to the fact that the rotating speed of the fresh air fan is adjusted constantly according to t is avoided.
Preferably, when the first anti-condensation condition comprises T and Δ T; the rotational speed of the new trend fan of machine in the first anti-condensation condition regulation includes:
s211, when t is less than or equal to t0, adjusting the fresh air fan to operate a first wind gear;
s221, when T is larger than T0, if | delta T | is smaller than or equal to T3, adjusting the fresh air fan to keep the first wind gear running;
s222, when T is larger than T0, if the delta T is larger than T3, the operation of the fresh air fan is adjusted to be reduced to a second wind gear;
wherein T0 is a first preset time, | Δ T | is an absolute temperature value of the temperature difference, and T3 is a first preset temperature difference value.
In one embodiment, t0 may be 1 hour, and the hour unit may be denoted as H, and the first wind level may be a middle wind level in order to avoid resonance noise generated between the fresh air fan and the circulating fan of the air conditioner during operation. T3 is taken as 15 ℃, so that 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 small at the moment, and the medium wind operation can be continuously kept; when T is greater than 1H, it means that the fresh air fan has been operated in the middle wind range state for more than 1H, and then Δ T is increased in combination with the heating function under the heating function, for example, when Δ T is greater than 15 ℃, the wind range needs to be adjusted down, that is, in the second wind range state, for example, the low wind range. Then, through the accurate regulation and control of the rotational speed to the new trend fan, when having avoided appearing the great difference in temperature between indoor outer environment, still make the new trend fan keep the well wind shelves operation and aggravate near the new trend fan air outlet and appear condensation or even the condensation collects the condition that drips, also can avoid delta T to be in when great or less state simultaneously, the new trend fan all runs with the same great wind shelves, cause when delta T is great, take away the more temperature of indoor environment, and reduce heat exchange efficiency, reduce user experience.
Preferably, the rotational speed of the new trend fan of indoor set is adjusted according to first anti-condensation condition still includes:
s223, when t1 is smaller than t2, controlling the fresh air fan to continuously keep the second wind gear running; and t1 is the running time of the new air fan for keeping the second wind gear, and t2 is the second preset time.
For example, t2 may be 2H, so it can be understood that when t1 < 2H means that the time for the fresh air fan to operate in the low wind range state is less than 2H, in order to ensure the overall operation efficiency, the frequent adjustment of the rotation speed of the fresh air fan is avoided, and the fresh air fan continues to operate in the low wind range state.
Preferably, the rotational speed of the new trend fan of indoor set is adjusted according to first anti-condensation condition still includes:
s224, when T1 is more than or equal to T2, if T3 is more than | Delta T |, and 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 predetermined temperature difference value;
s225, if the absolute value delta T is larger 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 operating the third rotating speed for a fourth preset time, and the second instruction comprises keeping the third rotating speed stopped for a fifth preset time.
In one embodiment, the fourth predetermined time may be 2H, and the fifth predetermined time may be 0.5H, and T4 may be 25 ℃. Therefore, when the temperature is more than 15 ℃ and less than | Δ T | ≦ 25 ℃, it means that the temperature difference between the indoor environment temperature and the outdoor environment temperature is large, and at this time, the operation time of the fresh air fan in the low wind gear state exceeds 2H, and it can be considered that condensation is likely to occur in the condensation intersection at the air outlet of the fresh air fan, so that the rotation speed corresponding to the low wind gear can be further reduced to the third rotation speed to reduce the probability of the above mentioned condensation, specifically, the rotation speed can be controlled to be reduced to 100r/min according to the 100r/0.5H uniform speed, and the rotation speed can be maintained to operate. The rotating speed is reduced at the uniform speed, so that the whole air conditioner is in a stable state.
Furthermore, by combining the content of the specific example, when the temperature is more than 25 ℃, the fresh air fan is used for alternately executing the first instruction and the second instruction, so that the risk of condensation of the fresh air outlet can be effectively reduced. Specifically, when | Δ T | > T4, it means that the indoor and outdoor temperature difference is too large, and it is necessary to increase the rotation speed of the fresh air fan to avoid condensation at the air outlet of the fresh air fan when the fresh air fan is operated at a high rotation speed. Therefore, the control rotating speed can be reduced to 100r/min according to the amplitude uniform speed of 200r/0.5H, and the fresh air fan is controlled to stop for 0.5H every time the fresh air fan runs for 2H, and the fresh air fan runs periodically and alternately.
It should be noted that the heat exchange function may also be a cooling function, and specifically, the control logic of the cooling function is the same as that of the heating function, which is not described herein again.
Preferably, in step S23, when the result of determining whether to control the air conditioner to operate the heat exchange function is negative, the rotation speed of the fresh air fan is adjusted according to the outdoor environment temperature and the time duration of operating the fresh air function. The rotating speed of the fresh air fan can be controlled finely.
Preferably, the adjusting the rotation speed of the fresh air fan according to the outdoor environment temperature and the time length of the fresh air operation function comprises: when the outdoor environment temperature enters a corresponding preset temperature interval, sequentially falling into different preset time intervals according to the time length of the fresh air running function so as to control and reduce the running gear of the fresh air fan; and/or when the outdoor environment temperature is in different preset temperature intervals, controlling the fresh air fan to operate the same wind shield for different time.
Preferably, the adjusting the rotation speed of the fresh air fan according to the outdoor environment temperature and the time length of the fresh air operation function comprises:
s231, when the T2 is larger than or equal to T5, controlling the fresh air fan to operate according to a first high wind gear;
s232, when the T6 is not less than T2 and is less than T5, adjusting and reducing the wind gear of the fresh air fan when the fresh air function operation time length falls into different preset time intervals in sequence;
s233, when T7 is not less than T2 and less than T6, adjusting and reducing the wind gear of the fresh air fan when the fresh air function runs in different preset time intervals in sequence according to the time length of the fresh air function; the fresh air fan runs in the same wind shield for different time in different outdoor environment temperature intervals; wherein T2 is the outdoor ambient temperature, T5 is the temperature point greater 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 range in which the outdoor environment temperature falls, the shorter the time for controlling the fresh air fan to operate the same damper. In one embodiment, T5 may be taken as 5 deg.C, T6 as 0 deg.C, and T7 as-5 deg.C, for example. When T2 is more than or equal to 5 ℃, it can be understood that when only the fresh air function is started, the difference between the outdoor environment temperature and the indoor environment temperature is small, and 5 ℃ is a temperature point higher than condensation, so that in this state, the fresh air fan can be operated in the state of the first high wind level without worrying about the occurrence of condensation at the air outlet of the fresh air fan, and the purpose of replacing the fresh air of the air can be achieved in a short time.
Further, when T2 is less than or equal to 0 ℃ and less than 5 ℃, consider that the user is in the indoor environment, relative outdoor environment, still have certain heat preservation effect, it is also relative, when T2 is less, will be great with the difference in temperature between the indoor ambient temperature, and at this moment, in the temperature interval of ℃ and 5 ℃, it is equivalent with the condensation temperature, make and easily appear the condensation near new trend fan air outlet when long-time operation, then, through reducing the windscreen and can effectively reduce the cold and hot efficiency of crossing, thereby reduce the condensation. For example, when t < 4H, the operation is carried out according to a high wind gear; when t is more than or equal to 4H and less than 8H, operating according to the middle gear; when t is more than or equal to 8H, the operation is carried out according to a low wind gear.
Further, when the temperature T2 is more than or equal to minus 5 ℃ and less than 0 ℃, the same principle is adopted, and the outdoor environment temperature is lower, and the delta T is larger than the situation, the wind gear needs to be adjusted in time, so that the risk of condensation caused by keeping the same wind gear for a long time is avoided. Specifically, for example, the user sets that the operation time of the fresh air fan is shorter than 0.5H, that is, when t is less than 0.5H, the operation is performed according to a high wind gear; when t is more than or equal to 0.5H and less than 2H, operating according to the middle gear; when t is more than or equal to 2H, the operation is carried out according to a low wind gear.
For example, when the outdoor environment temperature falls within a temperature range of-5 ℃ and 0 ℃ and a temperature range of 0 ℃ and 5 ℃, the preset time interval corresponding to the same wind shield when the fresh air fan operates is different, specifically, when the outdoor environment temperature is-3 ℃, that is, when the outdoor environment temperature falls within the temperature range of-5 ℃ and 0 ℃, the preset time interval for operating the high wind shield of the fresh air fan is, for example, 0-0.5H, and then, when the time for operating the fresh air function preset by the user is 0.3H, the condition for operating the high wind shield is met, and the fresh air fan is controlled to operate under the high wind shield. Correspondingly, when the outdoor environment temperature is 3 ℃, namely 3 ℃ falls into a temperature interval of 0 ℃ and 5 ℃, the fresh air fan meets the preset time interval of the high wind gear, for example, 0-4H is taken, so that when the time for operating the fresh air function is set to be 1H by a user, the condition for operating the high wind gear is met, and the fresh air fan is controlled to operate under the high wind gear.
Similarly, when T6 is equal to or greater than T2 and less than T5, for example, the fresh air fan can be controlled to operate at the middle wind gear if the preset time interval for operating the middle wind gear is 4H to 8H, and the time for operating the fresh air function set by the user is 4H to 8H, the condition for operating the middle wind gear is met, and the fresh air fan is controlled to operate at the middle wind gear, and in addition, the preset time interval for operating the low wind gear is greater than or equal to 8H, so that the condition for operating the low wind gear is met when the time for operating the fresh air function set by the user is greater than or equal to 8H, and the fresh air fan is controlled to operate at the low wind gear.
In contrast, when T7 is not less than T2 and less than T6, for example, the fresh air fan can be operated to meet the preset time interval of the middle wind gear in operation between 0.5H and 2H, and when the time for operating the fresh air function set by the user is between 0.5H and 2H, the condition of the middle wind gear in operation is met, the fresh air fan is controlled to operate under the middle wind gear, and in addition, the preset time interval of the low wind gear in operation is greater than or equal to 2H, so when the time for operating the fresh air function set by the user is greater than or equal to 2H, the condition of the low wind gear in operation is met, and the fresh air fan is controlled to operate under the low wind gear.
Preferably, the adjusting the rotation speed of the fresh air fan according to the outdoor environment temperature and the time length of the fresh air operation function further comprises:
s234, when the T8 is not less than T2 and is less than T7, controlling the fresh air fan to operate according to a low wind gear which is less than a first high wind gear, and when the time for operating the low wind gear is longer than a third preset time, controlling the rotation speed of the fresh air fan to be reduced to a fourth rotation speed, and controlling the fresh air fan to alternately execute a third instruction and a fourth instruction; the third command includes operating the fourth speed for a sixth preset time and the fourth command includes maintaining the stopped operation for a seventh preset time.
In one embodiment, T8 may be, for example, -15 deg.C, a third predetermined time of 2H, a sixth predetermined time of 2H, and a seventh predetermined time of 0.5H. Therefore, when t is larger than or equal to 2H, the low wind gear rotating speed can be controlled to be reduced to 100r/min at a constant speed according to 200r/0.5H, the rotating speed is maintained to operate, and the fresh air fan is stopped for 0.5H every time the fresh air fan operates for 2H, so that the operation is repeated. It can be understood that the third instruction and the fourth instruction are executed alternately by controlling the fresh air fan, so that the cold and hot intersection efficiency is effectively reduced, and condensation is reduced.
And S235, if the T2 is less than the T8, controlling the fresh air fan to stop running.
Example two:
fig. 5 is a schematic diagram of module connection 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 determination module 120. The control module 110 is used for controlling an indoor unit of an air conditioner to run 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, adjusting the rotating speed of a fresh air fan of the indoor unit according to the first condensation releasing condition; the first anti-condensation condition comprises: the duration of the fresh air function; or the time length of the fresh air running function and the temperature difference between the indoor environment temperature and the outdoor environment temperature; the time length 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 the delta T is T1-T2.
Specifically, this embodiment can achieve the technical effect in any one of the technical solutions corresponding to the first embodiment, and details are not described here.
Example three:
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 in the first embodiment.
Specifically, this embodiment can achieve the technical effect corresponding to any one of the technical solutions in the first embodiment, and details are not described here.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A method of controlling an air conditioner, comprising:
controlling an indoor unit of the air conditioner to operate a fresh air function;
judging whether to control the air conditioner to operate a heat exchange function or not;
if so, adjusting the rotating speed of a fresh air fan of the indoor unit according to a first anti-condensation condition;
wherein the first anti-condensation condition comprises: the duration of the operation of the fresh air function; or the time length for operating the fresh air function and the temperature difference between the indoor environment temperature and the outdoor environment temperature; the time length 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 the delta T is T1-T2.
2. The control method according to claim 1,
and adjusting the fresh air fan to be in a corresponding wind gear according to the different preset time intervals of t.
3. The control method according to claim 1 or 2, characterized in that when the first anti-condensation condition includes T and Δ T; the adjusting the rotating speed of the fresh air fan of the indoor unit according to the first anti-condensation condition comprises the following steps:
when t is less than or equal to t0, adjusting the fresh air fan to operate a first wind gear;
when T is more than T0, if | delta T | ≦ T3, adjusting the fresh air fan to keep the first wind gear running; if the absolute value delta T is greater than T3, the operation of the fresh air fan to a second wind gear is reduced by adjustment;
wherein T0 is a first predetermined time, | Δ T | is an absolute temperature value of the temperature difference, and T3 is a first predetermined temperature difference value.
4. The control method according to claim 3, wherein the adjusting the rotation speed of the fresh air fan of the indoor unit according to the first anti-condensation condition further comprises:
when t1 is less than t2, controlling the fresh air fan to continuously keep the second wind level to operate;
and t1 is the running time of the new air fan for keeping the second wind gear, and t2 is the second preset time.
5. The control method according to claim 4, wherein the adjusting the rotation speed of the fresh air fan of the indoor unit according to the first anti-condensation condition further comprises:
when T1 is more than or equal to T2, if T3 is less than | delta T | ≦ T4, controlling the rotation speed of the fresh air fan to be reduced to a third rotation speed, and keeping the operation at the third rotation speed; wherein, the T4 is a second preset temperature difference value;
if the absolute value delta T is greater 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 operating the third rotating speed for a fourth preset time, and the second instruction comprises keeping the third rotating speed stopped for a fifth preset time.
6. The control method according to claim 1,
if not, the rotating speed of the fresh air fan is adjusted according to the outdoor environment temperature and the time length for operating the fresh air function.
7. The control method of claim 6, wherein the adjusting the rotation speed of the fresh air fan according to the outdoor environment temperature and the time duration for operating the fresh air function comprises:
when the T2 is more than or equal to T5, controlling the fresh air fan to operate according to a first high wind gear;
when the T6 is not less than T2 and is less than T5, adjusting and reducing the wind gear of the operation of the fresh air fan when the time length of the operation of the fresh air function falls into different preset time intervals in sequence;
when the T7 is not less than T2 and is less than T6, adjusting and reducing the wind gear of the operation of the fresh air fan when the time length of the operation of the fresh air function falls into different preset time intervals in sequence; the fresh air fan operates in the same wind gear within different outdoor environment temperature intervals in different time;
wherein T2 is outdoor ambient temperature, T5 is greater than 0 ℃; t6 is a third preset temperature value; t7 is a fourth preset temperature value.
8. The control method of claim 7, wherein said adjusting the speed of the fresh air blower based on the outdoor ambient temperature and the length of time the fresh air function is operating further comprises:
when T8 is not less than T2 and is less than T7, controlling the fresh air fan to operate according to a low wind gear, and when the time for operating the low wind gear is longer than a third preset time, controlling the rotation speed of the fresh air fan to be reduced to a fourth rotation speed, and controlling the fresh air fan to alternately execute a third instruction and a fourth instruction; the third instruction comprises operating the fourth rotating speed for a sixth preset time, and the fourth instruction comprises keeping the fourth rotating speed stopped for a seventh preset time;
and if T2 is less than T8, controlling the fresh air fan to stop running.
9. A control apparatus of an air conditioner, comprising:
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 the heat exchange function;
if so, adjusting the rotating speed of a fresh air fan of the indoor unit according to a first anti-condensation condition; the first anti-condensation condition comprises: the duration of the operation of the fresh air function; or the time length for operating the fresh air function and the temperature difference between the indoor environment temperature and the outdoor environment temperature; the time length 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 the delta T is T1-T2.
10. An air conditioner comprising a controller for executing an executable program to implement the control method of any one of claims 1 to 8.
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