CN112212468B - Control method of air conditioner - Google Patents
Control method of air conditioner Download PDFInfo
- Publication number
- CN112212468B CN112212468B CN202010961689.XA CN202010961689A CN112212468B CN 112212468 B CN112212468 B CN 112212468B CN 202010961689 A CN202010961689 A CN 202010961689A CN 112212468 B CN112212468 B CN 112212468B
- Authority
- CN
- China
- Prior art keywords
- preset
- temperature
- defrosting
- heat exchanger
- outdoor heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
Abstract
The invention discloses a control method of an air conditioner, which comprises the following steps: operating a defrosting mode; detecting outdoor environment temperature T and outdoor relative humidity phi; selecting one of a plurality of preset defrosting quit judgment strategies according to the outdoor environment temperature T and the outdoor relative humidity phi; and controlling whether to exit the defrosting mode or not according to the selected preset defrosting exit judgment strategy. According to the control method of the air conditioner, the time for exiting the defrosting mode can be accurately controlled, so that the defrosting effect and the energy consumption are considered.
Description
Technical Field
The invention relates to the field of air conditioning equipment, in particular to a control method of an air conditioner.
Background
In the air conditioner in the related art, under the condition of low-temperature heating, the outdoor heat exchanger can frost, so that the heat exchange effect of the air conditioner is affected, and therefore the air conditioner needs to be defrosted, and the heating effect is improved.
The exit control of the defrosting mode generally adopts two modes, one mode is controlled according to accumulated defrosting time, the other mode is controlled according to the temperature of a coil pipe of the outdoor heat exchanger, but in the two control modes, each control mode only depends on one judgment strategy, the accuracy is poor, and if the defrosting time is too long, the air conditioner cannot heat, but still consumes power, and unnecessary energy consumption is caused; the defrosting time is too short, so that the defrosting is not good, particularly in a low-temperature and high-humidity environment, the defrosting is not clean, and even the outdoor heat exchanger and an outdoor machine chassis are frozen to damage fan blades of an outdoor fan.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a control method of an air conditioner, which can accurately control the timing of exiting the defrosting mode, thereby achieving both the defrosting effect and the energy consumption.
To achieve the above object, a control method of an air conditioner according to an embodiment of the present invention includes: operating a defrosting mode; detecting outdoor environment temperature T and outdoor relative humidity phi; selecting one of a plurality of preset defrosting quit judgment strategies according to the outdoor environment temperature T and the outdoor relative humidity phi; and controlling whether to exit the defrosting mode or not according to the selected preset defrosting exit judgment strategy.
According to the air conditioner provided by the embodiment of the invention, the time for exiting the defrosting mode can be accurately controlled, so that the defrosting effect and the energy consumption are considered.
According to some specific embodiments of the present invention, the plurality of preset defrosting exit determination strategies include a first preset defrosting exit determination strategy, a second preset defrosting exit determination strategy, and a third preset defrosting exit determination strategy; the outdoor environment temperature T is greater than the preset temperature T0Selecting the first preset defrosting quit judgment strategy; the outdoor environment temperature T is less than the preset temperature T0And the outdoor relative humidity phi is larger than the preset relative humidity phi0Selecting the second preset defrosting quitting judgment strategy; the outdoor environment temperature T is less than the preset temperature T0And the outdoor relative humidity phi is less than the preset relative humidity phi0And selecting the third preset defrosting quit judgment strategy.
Further, the preset temperature T0The temperature is-1 ℃ to 3 ℃.
Further, the preset relative humidity Φ070-90%.
According to some specific embodiments of the present invention, the first preset defrosting exit determining strategy determines whether to exit the defrosting mode by substituting the temperature of the outdoor heat exchanger, the temperature duration of the outdoor heat exchanger, and the duration time of the defrosting mode into a first relational expression; the second preset defrosting exit judgment strategy judges whether to exit the defrosting mode or not by substituting the temperature of the outdoor heat exchanger, the temperature duration of the outdoor heat exchanger and the continuous operation time of the defrosting mode into a second relational expression; and the third preset defrosting exit judgment strategy judges whether to exit the defrosting mode or not by substituting the temperature of the outdoor heat exchanger, the temperature duration of the outdoor heat exchanger and the continuous operation time of the defrosting mode into a third relation.
According to some embodiments of the invention, the first preset defrosting exit judgment policy comprises: detecting the temperature of the outdoor heat exchanger, and judging whether the condition A is met: the temperature of the outdoor heat exchanger is greater than a first preset temperature t1(ii) a Detecting the temperature of the outdoor heat exchanger, and judging whether the condition B is met: the temperature of the outdoor heat exchanger is greater than a second preset temperature t2And the duration reaches the first preset time y1The second preset temperature t2Less than the first preset temperature t1(ii) a Detecting the continuous operation time of the defrosting mode, and judging whether the condition C is met: the continuous operation time of the defrosting mode reaches a second preset time y2(ii) a If at least one of the conditions A, B, C is satisfied, the defrosting mode is controlled to be exited; and if the condition A, B, C is not met, controlling the defrosting mode to continue to operate.
According to some embodiments of the invention, the second preset defrosting exit judgment policy includes: detecting the temperature of the outdoor heat exchanger, and judging whether the condition D is met: the temperature of the outdoor heat exchanger is higher than a third preset temperature t3(ii) a Detecting the temperature of the outdoor heat exchanger, and judging whether the condition E is met: the temperature of the outdoor heat exchanger is higher than a fourth preset temperature t4And the duration reaches a third preset time y3The fourth preset temperature t4Less than the third preset temperature t3(ii) a Detecting the continuous operation time of the defrosting mode, and judging whether the condition F is met: the continuous operation time of the defrosting mode reaches a fourth preset time y4(ii) a If at least one of the conditions D, E, F is satisfied, the defrosting mode is controlled to be exited; if none of the above conditions D, E, F are met,the defrosting mode is controlled to continue to operate.
Further, the third preset temperature t3=-T+x1(ii) a The fourth preset temperature t4=-T+x2(ii) a The third preset time y3=x3T+x4(ii) a The fourth preset time y410-20 minutes; wherein x is1Is a first correction value, x2Is the second correction value, x3Is a third correction value, x4Is a fourth correction value, x2＜x1。
According to some embodiments of the invention, the third preset defrosting exit judgment policy includes: detecting the temperature of the outdoor heat exchanger, and judging whether the condition G is met: the temperature of the outdoor heat exchanger is higher than a fifth preset temperature t5(ii) a Detecting the temperature of the outdoor heat exchanger, and judging whether the condition H is met: the temperature of the outdoor heat exchanger is higher than a sixth preset temperature t6And the duration reaches the fifth preset time y5The sixth preset temperature t6Less than the fifth preset temperature t5(ii) a Detecting the continuous operation time of the defrosting mode, and judging whether the condition I is met: the continuous operation time of the defrosting mode reaches a sixth preset time y6(ii) a If at least one of the conditions G, H, I is satisfied, the defrosting mode is controlled to be exited; and if the condition G, H, I is not met, controlling the defrosting mode to continue to operate.
Further, the fifth preset temperature t5=-T+x5(ii) a The sixth preset temperature t6=x6T+x7(ii) a The fifth preset time y5=x8T+x9(ii) a The sixth preset time y610-20 minutes; wherein x is5Is a fifth correction value, x6Is a sixth correction value, x7Is a seventh correction value, x8Is an eighth correction value, x9Is a ninth correction value, x6＜x5。
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A control method of an air conditioner according to an embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1, a control method of an air conditioner according to an embodiment of the present invention includes:
operating a defrosting mode;
detecting outdoor environment temperature T and outdoor relative humidity phi;
selecting one of a plurality of preset defrosting exit judgment strategies according to the outdoor environment temperature T and the outdoor relative humidity phi, namely, the air conditioner is preset with a plurality of defrosting exit judgment strategies, and selecting different preset defrosting exit judgment strategies according to different detection results of the outdoor environment temperature T and the outdoor relative humidity phi as control logic of subsequent defrosting exit;
and controlling whether to exit the defrosting mode or not according to the selected preset defrosting exit judgment strategy.
As will be understood by those skilled in the art, the "outdoor relative humidity Φ" refers to the percentage of the water vapor pressure in the outdoor air to the saturated water vapor pressure at the same temperature.
The control of entering into the defrosting mode may adopt the existing known defrosting entering control, and is not described herein again.
According to the control method of the air conditioner, a plurality of different preset defrosting exit judgment strategies are arranged in the air conditioner, the environment information of the air conditioner is obtained by detecting the outdoor environment temperature T and the outdoor relative humidity phi, and different preset defrosting exit judgment strategies are selected according to the numerical values of the outdoor environment temperature T and the outdoor relative humidity phi, so that wider temperature and humidity ranges are compatible, and the aim of accurately controlling the time for exiting the defrosting mode is fulfilled. In addition, the outdoor relative humidity phi is adopted instead of the outdoor humidity as a parameter for judgment, so that the control accuracy of exiting the defrosting mode can be further improved.
Therefore, on one hand, the air conditioner can exit the defrosting mode in time after defrosting is clean, unnecessary energy consumption caused by continuous operation of defrosting is avoided, or the air conditioner is recovered to heat, and the comfort of the indoor environment is improved; on the other hand, when the air conditioner exits the defrosting mode, the defrosting effect is good, the defrosting is clean, the heating effect is guaranteed, and the outdoor heat exchanger and the outdoor machine chassis are prevented from being frozen to damage fan blades of the outdoor fan.
Therefore, according to the control method of the air conditioner provided by the embodiment of the invention, the time for exiting the defrosting mode can be accurately controlled, so that the defrosting effect and the energy consumption are both considered.
In some embodiments of the present invention, the plurality of preset defrosting exit determination strategies include a first preset defrosting exit determination strategy, a second preset defrosting exit determination strategy, and a third preset defrosting exit determination strategy;
outdoor environment temperature T > Preset temperature T0Selecting a first preset defrosting quit judgment strategy;
outdoor environment temperature T is less than preset temperature T0And the outdoor relative humidity phi is larger than the preset relative humidity phi0Selecting a second preset defrosting quit judgment strategy;
outdoor environment temperature T is less than preset temperature T0And the outdoor relative humidity phi is less than the preset relative humidity phi0And selecting a third preset defrosting quit judgment strategy.
Wherein the preset temperature T0Can be from-1 ℃ to 3 ℃, e.g., 0 ℃; the preset relative humidity phi0Can be 70% -90%, for exampleSuch as 80%.
Therefore, different defrosting quit judgment strategies are selected under the high-temperature environment, the low-temperature high-humidity environment and the low-temperature low-humidity environment respectively according to different outdoor environment temperatures T and outdoor relative humidity phi, logic of follow-up defrosting quit control can be combined with the temperature and humidity of the current environment, and therefore the air conditioner can be compatible with wider temperature and humidity ranges, and the quit time of defrosting can be accurately controlled by the air conditioner in different temperature and humidity ranges.
According to some specific examples of the present invention, the first preset defrosting exit determining strategy determines whether to exit the defrosting mode by substituting the temperature of the outdoor heat exchanger, the temperature duration of the outdoor heat exchanger, and the duration time of the defrosting mode into a first relational expression;
the second preset defrosting exit judgment strategy judges whether to exit the defrosting mode or not by substituting the temperature of the outdoor heat exchanger, the temperature duration of the outdoor heat exchanger and the continuous operation time of the defrosting mode into a second relational expression;
and the third preset defrosting exit judgment strategy judges whether to exit the defrosting mode or not by substituting the temperature of the outdoor heat exchanger, the temperature duration of the outdoor heat exchanger and the continuous operation time of the defrosting mode into a third relation.
Therefore, in the first preset defrosting quitting judgment strategy, the second preset defrosting quitting judgment strategy and the second preset defrosting quitting judgment strategy, the temperature of the outdoor heat exchanger, the temperature duration of the outdoor heat exchanger and the continuous operation time of the defrosting mode are all adopted as judgment parameters to judge, the detection is convenient, the arrangement cost of the sensor is saved, in different preset defrosting quitting judgment strategies, different relational expressions are adopted to calculate, and the judgment of different strategies can be carried out according to different detection outdoor environment temperatures T and outdoor relative humidity phi.
In some embodiments of the present invention, the first preset defrosting exit determination strategy includes:
detecting the temperature of the outdoor heat exchanger, and judging whether the condition A is met: the temperature of the outdoor heat exchanger is greater than a first preset temperature t1；
Detecting the temperature of the outdoor heat exchanger, and judging whether the condition B is met: the temperature of the outdoor heat exchanger is higher than a second preset temperature t2And the duration reaches the first preset time y1Second predetermined temperature t2Less than a first predetermined temperature t1；
Detecting the continuous operation time of the defrosting mode, and judging whether the condition C is met: the continuous operation time of the defrosting mode reaches a second preset time y2。
If at least one of the conditions A, B, C is satisfied, the control unit exits the defrosting mode, and if the condition A, B, C is not satisfied, the control unit controls the defrosting mode to continue to operate.
Optionally, the first preset temperature t1At 13-19 ℃, and the second preset temperature t2Is 5 to 11 ℃, and the first preset time y1Is 65 seconds to 95 seconds, and the second preset time y2The time is 9-15 minutes.
For example, the first predetermined temperature t1May be 16 deg.C, a second predetermined temperature t2May be 8 ℃, the first preset time y1Can be 80 seconds and a second preset time y2And may be 12 minutes.
A first predetermined temperature t1A second predetermined temperature t2First preset time y1And a second preset time y1These parameters can be preset according to actual conditions and adjusted according to the specific model and use condition of the actual air conditioner. The parameters are set in the storage space of the air conditioner, and the air conditioner reads the first preset temperature t suitable for the model1A second predetermined temperature t2First preset time y1And a second preset time y1And the parameters are used for carrying out logic judgment on a first preset defrosting quitting judgment strategy of the air conditioner.
In other words, when the outdoor environment temperature T > 0 ℃, the defrosting mode is exited when one of the following three conditions is satisfied: a: when the temperature of the outdoor heat exchanger rises above 16 ℃;
b: when the temperature of the outdoor heat exchanger rises to be higher than 8 ℃ and lasts for more than 80 seconds;
c: when the defrosting operation lasted 12 minutes.
Thus, when the outdoor environment temperature T is more than 0 ℃, a first preset defrosting quit judgment strategy is adopted to detect the temperature of the outdoor heat exchanger and the temperature is respectively equal to the first preset temperature T1And a second preset temperature t2And (6) comparing. The temperature of the outdoor heat exchanger is higher than the second preset temperature t2The duration is counted, and the duration running time of the defrosting mode is counted. And further determines whether condition A, B, C is satisfied. It is understood that the order of the determination of the condition A, B, C can be adjusted according to actual conditions without affecting the accuracy of the air conditioner control method. Therefore, the first preset defrosting exit judgment strategy improves the judgment accuracy through jointly judging the three conditions of the condition A, B, C, so that the time for the air conditioner to exit the defrosting mode in the high-temperature environment is more accurate.
In some embodiments of the invention, the second preset defrosting exit judgment policy includes:
detecting the temperature of the outdoor heat exchanger, and judging whether the condition D is met: the temperature of the outdoor heat exchanger is higher than the third preset temperature t3；
Detecting the temperature of the outdoor heat exchanger, and judging whether the condition E is met: the temperature of the outdoor heat exchanger is higher than the fourth preset temperature t4And the duration reaches a third preset time y3Fourth predetermined temperature t4Less than a third predetermined temperature t3；
Detecting the continuous operation time of the defrosting mode, and judging whether the condition F is met: the continuous operation time of the defrosting mode reaches a fourth preset time y4。
If at least one of the conditions D, E, F is satisfied, the control unit exits the defrosting mode, and if the condition D, E, F is not satisfied, the control unit controls the defrosting mode to continue to operate.
For example, the third predetermined temperature t3=-T+x1Fourth predetermined temperature t4=-T+x2A third preset time y3=x3T+x4Fourth preset timey4The time is 10 minutes to 20 minutes, for example 15 minutes.
Wherein x is1Is a first correction value, x2Is the second correction value, x3Is a third correction value, x4Is a fourth correction value, x2＜x1。
Alternatively, x1=15℃~21℃，x2=5℃~11℃，x3=-5~-11，x4= 65-95 seconds, y3Less than or equal to 200 seconds.
For example, x1=18℃，x2=8℃，x3=-8，x4=80 seconds.
Third predetermined temperature t3A fourth preset temperature t4A third preset time y3And a fourth preset time y4The first correction value x can be preset and adjusted according to the specific model and use condition of the actual air conditioner1The second correction value x2The third correction value x3And a fourth correction value x4. The parameter is set in the storage space of the air conditioner, and the air conditioner reads the first correction value x suitable for the model1The second correction value x2The third correction value x3And a fourth correction value x4And carrying out logic judgment on a second preset defrosting quit judgment strategy of the air conditioner.
In other words, when the outdoor environment temperature T is more than 0 ℃ and the outdoor relative humidity phi is more than 80 ℃, the defrosting mode is exited when one of the following three conditions is met;
d: when the temperature of the outdoor heat exchanger rises above t3At = -T +18 ℃;
e: when the temperature of the outdoor heat exchanger rises to be higher than t4= T +8 ℃ and for y3Time = 8T +80 (no more than 200 seconds);
f: when the defrosting operation lasted 15 minutes.
Thus, when the outdoor environment temperature T is less than 0 ℃ and the outdoor relative humidity phi is more than 80 ℃, the temperature of the outdoor heat exchanger is detected by adopting a second preset defrosting quitting judgment strategy and is respectively equal to a third preset temperature T3And a fourth preset temperature t4And (6) comparing. The temperature of the outdoor heat exchanger is higher than the fourth preset temperature t4The duration is counted. And the continuous operation time of the defrosting mode is counted, and whether the condition D, E, F is met is judged. It is understood that the order of the determination of the condition D, E, F can be adjusted according to actual conditions without affecting the accuracy of the air conditioner control method. Therefore, the second preset defrosting exit judgment strategy improves the judgment accuracy through the three conditions of the common judgment condition D, E, F, so that the time for the air conditioner to exit the defrosting mode in the low-temperature high-humidity environment is more accurate.
In some embodiments of the invention, the third preset defrosting exit judgment policy includes:
detecting the temperature of the outdoor heat exchanger, and judging whether the condition G is met: the temperature of the outdoor heat exchanger is higher than the fifth preset temperature t5；
Detecting the temperature of the outdoor heat exchanger, and judging whether the condition H is met: the temperature of the outdoor heat exchanger is higher than the sixth preset temperature t6And the duration reaches the fifth preset time y5Sixth preset temperature t6Less than a fifth predetermined temperature t5；
Detecting the continuous operation time of the defrosting mode, and judging whether the condition I is met: the continuous operation time of the defrosting mode reaches a sixth preset time y6。
If at least one of the conditions G, H, I is satisfied, the control unit exits the defrosting mode, and if the condition G, H, I is not satisfied, the control unit controls the defrosting mode to continue to operate.
For example, the fifth preset temperature t5=-T+x5Sixth preset temperature t6=x6T+x7Fifth preset time y5=x8T+x9Sixth preset time y6The time is 10 minutes to 20 minutes, for example 15 minutes.
Wherein x is5Is a fifth correction value, x6Is a sixth correction value, x7Is a seventh correction value, x8Is an eighth correction value, x9Is a ninth correction value, x6＜x5。
Alternatively, x5=12℃~18℃，x6=-1.2~-2.2，x7=5℃~11℃，x8=-2~-6，x9And = 65-95 seconds. y is5Less than or equal to 140 seconds.
For example, x5=15℃，x6=-1.7，x7=8℃，x8=-4，x9=80 seconds.
Fifth preset temperature t5A calculation formula of (a) a sixth preset temperature t6A calculation formula of (a), a fifth preset time y5And a sixth preset time y6The sixth correction value x can be preset and adjusted according to the specific model and use condition of the actual air conditioner6Seventh correction value x7Eighth correction value x8Ninth correction value x9. Setting the parameters in the storage space of the air conditioner, and reading the seventh correction value x suitable for the type7Eighth correction value x8Ninth correction value x9And carrying out logic judgment on a third preset defrosting quit judgment strategy of the air conditioner.
In other words, when the outdoor environment temperature T is more than 0 ℃ and the outdoor relative humidity phi is less than 80 ℃, the defrosting mode is exited when one of the following three conditions is met;
g: when the temperature of the outdoor heat exchanger rises above t5At = -T +15 ℃;
h: when the temperature of the outdoor heat exchanger rises to be higher than t6= 1.7T +8 ℃ and for y5= 4T +80 hours (no more than 140 seconds);
i: when the defrosting operation lasted 15 minutes.
Thus, when the outdoor environment temperature T is less than 0 ℃ and the outdoor relative humidity phi is less than 80 ℃, the temperature of the outdoor heat exchanger is detected by adopting a third preset defrosting quit judgment strategy and is respectively equal to a fifth preset temperature T5And a sixth preset temperature t6And (6) comparing. The temperature of the outdoor heat exchanger is higher than the sixth preset temperature t6The duration is counted. And the continuous operation time of the defrosting mode is counted, and whether the condition G, H, I is met is judged. It is to be understood that the order of the determinations of condition G, H, I may be adjusted according to the circumstances,the accuracy of the control method of the air conditioner is not affected. Therefore, the third preset defrosting exit judgment strategy improves the judgment accuracy through the three conditions of the common judgment condition G, H, I, so that the time for the air conditioner to exit the defrosting mode in the low-temperature and low-humidity environment is more accurate.
According to the control method of the air conditioner, the logic (software) of the control method can be written into the control chip of the air conditioner.
The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. The air conditioner is used as a heater in a heating mode when the indoor heat exchanger is used as a condenser, and as a condenser in a cooling mode when the indoor heat exchanger is used as an evaporator.
In the description herein, references to the description of "a particular embodiment," "a particular example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A method of controlling an air conditioner, comprising:
operating a defrosting mode;
detecting outdoor environment temperature T and outdoor relative humidity phi;
selecting one of a plurality of preset defrosting quit judgment strategies according to the outdoor environment temperature T and the outdoor relative humidity phi;
the plurality of preset defrosting exit judgment strategies comprise a first preset defrosting exit judgment strategy, a second preset defrosting exit judgment strategy and a third preset defrosting exit judgment strategy;
the outdoor environment temperature T is greater than the preset temperature T0Selecting the first preset defrosting quit judgment strategy;
the outdoor environment temperature T is less than the preset temperature T0And the outdoor relative humidity phi is larger than the preset relative humidity phi0Selecting the second preset defrosting quitting judgment strategy;
the outdoor environment temperature T is less than the preset temperature T0And the outdoor relative humidity phi is less than the preset relative humidity phi0Selecting the third preset defrosting quit judgment strategy;
and controlling whether to exit the defrosting mode or not according to the selected preset defrosting exit judgment strategy.
2. The control method of an air conditioner according to claim 1, wherein the control method comprises the step of controlling the air conditioner according to the control commandAt the preset temperature T0The temperature is-1 ℃ to 3 ℃.
3. The control method of an air conditioner according to claim 1, wherein the preset relative humidity Φ070-90%.
4. The control method of an air conditioner according to claim 1, wherein the first preset defrosting exit determination strategy determines whether to exit the defrosting mode by substituting the temperature of the outdoor heat exchanger, the temperature duration of the outdoor heat exchanger, and the duration time of the defrosting mode into a first relational expression;
the second preset defrosting exit judgment strategy judges whether to exit the defrosting mode or not by substituting the temperature of the outdoor heat exchanger, the temperature duration of the outdoor heat exchanger and the continuous operation time of the defrosting mode into a second relational expression;
and the third preset defrosting exit judgment strategy judges whether to exit the defrosting mode or not by substituting the temperature of the outdoor heat exchanger, the temperature duration of the outdoor heat exchanger and the continuous operation time of the defrosting mode into a third relation.
5. The control method of an air conditioner according to claim 1, wherein the first preset defrosting exit determination strategy includes:
detecting the temperature of the outdoor heat exchanger, and judging whether the condition A is met: the temperature of the outdoor heat exchanger is greater than a first preset temperature t1；
Detecting the temperature of the outdoor heat exchanger, and judging whether the condition B is met: the temperature of the outdoor heat exchanger is greater than a second preset temperature t2And the duration reaches the first preset time y1The second preset temperature t2Less than the first preset temperature t1；
Detecting the continuous operation time of the defrosting mode, and judging whether the condition C is met: the continuous operation time of the defrosting mode reaches a second preset time y2；
If at least one of the conditions A, B, C is satisfied, the defrosting mode is controlled to be exited; and if the condition A, B, C is not met, controlling the defrosting mode to continue to operate.
6. The control method of an air conditioner according to claim 1, wherein the second preset defrosting exit determination strategy includes:
detecting the temperature of the outdoor heat exchanger, and judging whether the condition D is met: the temperature of the outdoor heat exchanger is higher than a third preset temperature t3；
Detecting the temperature of the outdoor heat exchanger, and judging whether the condition E is met: the temperature of the outdoor heat exchanger is higher than a fourth preset temperature t4And the duration reaches a third preset time y3The fourth preset temperature t4Less than the third preset temperature t3；
Detecting the continuous operation time of the defrosting mode, and judging whether the condition F is met: the continuous operation time of the defrosting mode reaches a fourth preset time y4；
If at least one of the conditions D, E, F is satisfied, the defrosting mode is controlled to be exited;
and if the condition D, E, F is not met, controlling the defrosting mode to continue to operate.
7. The control method of an air conditioner according to claim 6,
the third preset temperature t3=-T+x1；
The fourth preset temperature t4=-T+x2；
The third preset time y3=x3T+x4；
The fourth preset time y410-20 minutes;
wherein x is1Is a first correction value, x2Is the second correction value, x3Is a third correction value, x4Is a fourth correction value, x2＜x1。
8. The control method of an air conditioner according to claim 1, wherein the third preset defrosting exit determination strategy includes:
detecting the temperature of the outdoor heat exchanger, and judging whether the condition G is met: the temperature of the outdoor heat exchanger is higher than a fifth preset temperature t5；
Detecting the temperature of the outdoor heat exchanger, and judging whether the condition H is met: the temperature of the outdoor heat exchanger is higher than a sixth preset temperature t6And the duration reaches the fifth preset time y5The sixth preset temperature t6Less than the fifth preset temperature t5；
Detecting the continuous operation time of the defrosting mode, and judging whether the condition I is met: the continuous operation time of the defrosting mode reaches a sixth preset time y6；
If at least one of the conditions G, H, I is satisfied, the defrosting mode is controlled to be exited;
and if the condition G, H, I is not met, controlling the defrosting mode to continue to operate.
9. The control method of an air conditioner according to claim 8,
the fifth preset temperature t5=-T+x5；
The sixth preset temperature t6=x6T+x7；
The fifth preset time y5=x8T+x9；
The sixth preset time y610-20 minutes;
wherein x is5Is a fifth correction value, x6Is a sixth correction value, x7Is a seventh correction value, x8Is an eighth correction value, x9Is a ninth correction value, x6＜x5。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010961689.XA CN112212468B (en) | 2020-09-14 | 2020-09-14 | Control method of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010961689.XA CN112212468B (en) | 2020-09-14 | 2020-09-14 | Control method of air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112212468A CN112212468A (en) | 2021-01-12 |
| CN112212468B true CN112212468B (en) | 2021-12-14 |
Family
ID=74050378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010961689.XA Active CN112212468B (en) | 2020-09-14 | 2020-09-14 | Control method of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112212468B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005016830A (en) * | 2003-06-26 | 2005-01-20 | Sanyo Electric Co Ltd | Air-conditioner |
| JP4365378B2 (en) * | 2006-02-21 | 2009-11-18 | 三菱電機株式会社 | Defrosting operation control device and defrosting operation control method |
| CN102997368A (en) * | 2012-12-10 | 2013-03-27 | 宁波奥克斯电气有限公司 | Intelligent defrosting control method for parallel multiple on-line unit with multiple compressors |
| JP2013108729A (en) * | 2011-11-24 | 2013-06-06 | Daikin Industries Ltd | Air conditioner |
| CN105135628A (en) * | 2015-09-28 | 2015-12-09 | Tcl空调器(中山)有限公司 | Air conditioner and defrosting control method of air conditioner |
| CN107044716A (en) * | 2017-04-21 | 2017-08-15 | 广东美的暖通设备有限公司 | Air-conditioner defrosting control method, air-conditioning and computer-readable recording medium |
| JP2018013301A (en) * | 2016-07-21 | 2018-01-25 | 株式会社富士通ゼネラル | Air conditioner |
| CN107957156A (en) * | 2017-11-27 | 2018-04-24 | 青岛奥利凯中央空调有限公司 | Net for air-source heat pump units defrosting control method |
| CN208059193U (en) * | 2018-03-23 | 2018-11-06 | 沈阳日上机电工程技术有限公司 | A kind of defrosting control system of fresh air system |
| CN109084443A (en) * | 2018-07-26 | 2018-12-25 | 四川长虹空调有限公司 | A kind of condenser for outdoor unit of air conditioner frosting suppressing method and air-conditioning |
| CN109237744A (en) * | 2018-09-10 | 2019-01-18 | 青岛海尔空调器有限总公司 | A kind of control method improving air-conditioning heating process stability |
| CN109405184A (en) * | 2018-10-29 | 2019-03-01 | 宁波奥克斯电气股份有限公司 | A kind of air conditioner defrosting control method and air conditioner |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007263426A (en) * | 2006-03-28 | 2007-10-11 | Sanyo Electric Co Ltd | Defrosting control device |
| CN102269463B (en) * | 2011-07-27 | 2013-07-17 | 海尔集团公司 | Control method for increasing low-temperature heating heat of varied-frequency air conditioner |
| CN104236004B (en) * | 2013-06-19 | 2017-02-15 | 广东美的制冷设备有限公司 | Defrosting control method and device for heat pump system |
| CN104634017A (en) * | 2013-11-11 | 2015-05-20 | 青岛三利中德美水设备有限公司 | Defrosting system for air source heat pump |
| CN104930638A (en) * | 2014-03-21 | 2015-09-23 | 海尔集团公司 | Heat pump air-conditioning defrosting control method and heat pump air-conditioning system |
| JP2016065687A (en) * | 2014-09-25 | 2016-04-28 | パナソニックＩｐマネジメント株式会社 | Air conditioner |
| KR101626675B1 (en) * | 2014-11-12 | 2016-06-01 | 엘지전자 주식회사 | An air conditioning system and a method for controlling the same |
| CN205102269U (en) * | 2015-10-31 | 2016-03-23 | 武晓宁 | Dew point temperature defrosting type changes in temperature components of a whole that can function independently air conditioner |
| CN105698452B (en) * | 2016-02-29 | 2018-07-06 | 广东万和电气有限公司 | The control method for exiting defrosting mode for heat pump and the heat pump using its method |
| CN107084495A (en) * | 2017-05-10 | 2017-08-22 | 青岛海尔空调器有限总公司 | The defrosting control method and air conditioner of air conditioner |
| KR102342408B1 (en) * | 2017-05-12 | 2021-12-24 | 엘지전자 주식회사 | An air conditioner and a method for controlling the same |
| CN107152766B (en) * | 2017-06-08 | 2020-02-07 | 广东美的暖通设备有限公司 | Defrosting control method, defrosting control device and air conditioner |
| CN109323368B (en) * | 2018-09-30 | 2020-10-30 | 广东美的制冷设备有限公司 | Air conditioner and defrosting method and device thereof |
| CN110986274B (en) * | 2019-11-21 | 2021-04-27 | 珠海格力电器股份有限公司 | Control method for preventing incomplete defrosting of electric heater, computer readable storage medium and air conditioner |
| CN111076364A (en) * | 2019-12-25 | 2020-04-28 | 珠海格力电器股份有限公司 | Heat exchanger assembly, air conditioner and air conditioner control method |
-
2020
- 2020-09-14 CN CN202010961689.XA patent/CN112212468B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005016830A (en) * | 2003-06-26 | 2005-01-20 | Sanyo Electric Co Ltd | Air-conditioner |
| JP4365378B2 (en) * | 2006-02-21 | 2009-11-18 | 三菱電機株式会社 | Defrosting operation control device and defrosting operation control method |
| JP2013108729A (en) * | 2011-11-24 | 2013-06-06 | Daikin Industries Ltd | Air conditioner |
| CN102997368A (en) * | 2012-12-10 | 2013-03-27 | 宁波奥克斯电气有限公司 | Intelligent defrosting control method for parallel multiple on-line unit with multiple compressors |
| CN105135628A (en) * | 2015-09-28 | 2015-12-09 | Tcl空调器(中山)有限公司 | Air conditioner and defrosting control method of air conditioner |
| JP2018013301A (en) * | 2016-07-21 | 2018-01-25 | 株式会社富士通ゼネラル | Air conditioner |
| CN107044716A (en) * | 2017-04-21 | 2017-08-15 | 广东美的暖通设备有限公司 | Air-conditioner defrosting control method, air-conditioning and computer-readable recording medium |
| CN107957156A (en) * | 2017-11-27 | 2018-04-24 | 青岛奥利凯中央空调有限公司 | Net for air-source heat pump units defrosting control method |
| CN208059193U (en) * | 2018-03-23 | 2018-11-06 | 沈阳日上机电工程技术有限公司 | A kind of defrosting control system of fresh air system |
| CN109084443A (en) * | 2018-07-26 | 2018-12-25 | 四川长虹空调有限公司 | A kind of condenser for outdoor unit of air conditioner frosting suppressing method and air-conditioning |
| CN109237744A (en) * | 2018-09-10 | 2019-01-18 | 青岛海尔空调器有限总公司 | A kind of control method improving air-conditioning heating process stability |
| CN109405184A (en) * | 2018-10-29 | 2019-03-01 | 宁波奥克斯电气股份有限公司 | A kind of air conditioner defrosting control method and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112212468A (en) | 2021-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110940055B (en) | Heating and defrosting control method and device for air conditioner and air conditioner | |
| CN111981640B (en) | Defrosting control method and device, air conditioner and storage medium | |
| CN109163411A (en) | A kind of control method of heat pump system, heat pump system and air-conditioning | |
| CN102032649A (en) | Defrosting control method for air-conditioning system | |
| CN108195026B (en) | Defrosting control method, control device, air conditioner and readable storage medium | |
| CN106152641B (en) | Air-conditioning refrigerator accurately defrosts intelligent control method and system | |
| CN109253524B (en) | Control method of heat pump system, heat pump system and air conditioner | |
| CN115183400B (en) | Air conditioner and defrosting control method thereof | |
| CN112032941A (en) | Control method of air conditioner | |
| CN113266932A (en) | Method and device for controlling defrosting of air conditioner, storage medium and air conditioner | |
| CN113639408A (en) | Air conditioner and control method thereof | |
| CN111473496B (en) | Air conditioning system, control method and device thereof and storage medium | |
| CN114165899A (en) | Multi-split system | |
| CN114110920A (en) | Control method of air conditioner and air conditioner | |
| CN115183401B (en) | Air conditioner and defrosting control method thereof | |
| CN112212468B (en) | Control method of air conditioner | |
| CN115031352B (en) | Air conditioner and defrosting control method thereof | |
| CN115031353B (en) | Air conditioner and defrosting control method thereof | |
| CN115218346B (en) | Heat accumulation defrosting control method and air conditioning unit | |
| CN115031351B (en) | Air conditioner and defrosting control method thereof | |
| CN113188237B (en) | Control method and device of air conditioner, storage medium and processor | |
| CN109855356A (en) | Evaporimeter frosting degree judgment method in refrigerator and refrigerator | |
| CN111486530B (en) | Air conditioner and control method thereof | |
| CN114857749B (en) | Air conditioner and method for controlling defrosting of air conditioner | |
| CN115289610B (en) | Air conditioner and defrosting control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |