CN114704915A - Control method and device of air conditioning system, air conditioning system and storage medium - Google Patents
Control method and device of air conditioning system, air conditioning system and storage medium Download PDFInfo
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- CN114704915A CN114704915A CN202210338997.6A CN202210338997A CN114704915A CN 114704915 A CN114704915 A CN 114704915A CN 202210338997 A CN202210338997 A CN 202210338997A CN 114704915 A CN114704915 A CN 114704915A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 375
- 238000000034 method Methods 0.000 title claims abstract description 56
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 20
- 238000001816 cooling Methods 0.000 description 16
- 238000010438 heat treatment Methods 0.000 description 10
- 238000004134 energy conservation Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
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- 238000005057 refrigeration Methods 0.000 description 4
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- 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
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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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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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Abstract
The invention discloses a control method and a control device of an air conditioning system, the air conditioning system and a storage medium, wherein the method comprises the following steps: determining the current maximum operation parameter of the outdoor fan in the current operation mode according to the current outdoor environment temperature in the current operation mode; determining whether at least one of a rest mode and a capacity adjustment mode is on; determining a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of the rest mode and the capacity adjustment mode is opened or not, and by combining with the reference operation parameter or the current outdoor environment temperature, wherein the final maximum operation parameter is used as an actual maximum operation parameter of the outdoor unit in the current operation mode; and controlling the outdoor fan to operate according to the final maximum operation parameter in the current operation mode. This scheme, through the maximum frequency that outdoor fan can operate of dynamic adjustment, be favorable to suitably reducing outdoor fan operating frequency in order to reduce the noise, promote user's comfort and experience.
Description
Technical Field
The invention belongs to the technical field of air conditioning systems, and particularly relates to a control method and device of an air conditioning system, the air conditioning system and a storage medium, in particular to a frequency control method and device of an outdoor fan of the air conditioning system, the air conditioning system and the storage medium.
Background
In the relevant scheme, the frequency of the outdoor fan of the air conditioning system is adjusted according to the pressure of the unit, and the air conditioning system has a wider working range to adapt to various different working conditions, such as: the working conditions of different outdoor fan frequencies can be adapted. However, the higher outdoor fan frequency often brings about a larger noise problem, and cannot meet the requirements of users with higher environmental requirements.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention aims to provide a control method and a control device of an air conditioning system, the air conditioning system and a storage medium, which are used for solving the problems that the mode of adjusting the frequency of an outdoor fan according to the unit pressure of the air conditioning system has a wider working range, but the higher frequency of the outdoor fan brings larger noise and influences the comfort experience of a user, achieving the maximum frequency capable of operating by dynamically adjusting the outdoor fan, being beneficial to properly reducing the operating frequency of the outdoor fan to reduce the noise and improving the comfort experience effect of the user.
The invention provides a control method of an air conditioning system, wherein the air conditioning system comprises the following steps: an outdoor unit and an indoor unit; the outdoor unit includes: an outdoor fan; the number of the indoor units is more than one; among the more than one indoor units, the indoor unit participating in the operation of the air conditioning system in the current operation mode is marked as an operation indoor unit; the control method of the air conditioning system comprises the following steps: acquiring the current outdoor environment temperature of the air conditioning system in the current operation mode of the air conditioning system; determining the current maximum operation parameter of the outdoor fan in the current operation mode according to the current outdoor environment temperature in the current operation mode, and recording the current maximum operation parameter as a reference operation parameter; determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on; the rest mode is a mode for determining the actual maximum operation parameter of the outdoor fan by combining a preset rest time period; the capacity adjustment mode is a mode for determining the actual maximum operation parameter of the outdoor fan by combining the capacity of the operation indoor unit; determining a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, and by combining the reference operation parameter or the current outdoor environment temperature in the current operation mode, wherein the final maximum operation parameter is used as an actual maximum operation parameter of the outdoor unit in the current operation mode; and controlling the outdoor fan to operate according to the actual maximum operation parameter in the current operation mode.
In some embodiments, determining a current maximum operating parameter of the outdoor fan in the current operating mode according to the current outdoor ambient temperature in the current operating mode includes: if the current outdoor environment temperature in the current operation mode is less than or equal to a first temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode as a first set operation parameter; if the current outdoor environment temperature in the current operation mode is greater than a second temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode as a second set operation parameter; the first temperature threshold in the current operating mode is different from the second temperature threshold in the current operating mode; if the current outdoor environment temperature in the current operation mode is greater than the first temperature threshold in the current operation mode and is less than or equal to the second temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode, and maintaining the current maximum operation parameter in the current operation mode determined last time.
In some embodiments, determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on comprises: determining whether a rest mode of the air conditioning system is turned on; the determination result of whether the rest mode of the air conditioning system is started is that the rest mode is started or the rest mode is not started; determining a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, and by combining the reference operation parameter or the current outdoor environment temperature in the current operation mode, including: if the rest mode is started, determining a difference value between the reference operation parameter determined by the current outdoor environment temperature in the current operation mode and a set parameter threshold value as a final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the current time of the air conditioning system is in a preset rest period in the rest mode; if the rest mode is started, determining the reference operation parameter determined by the current outdoor environment temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the current time of the air conditioning system is not in a preset rest time period in the rest mode; and if the rest mode is not started, determining the reference operation parameter determined by the current outdoor environment temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode.
In some embodiments, determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on further comprises: determining whether a capacity adjustment mode of the air conditioning system is turned on; determining whether a capacity adjustment mode of the air conditioning system is started or not as a result of determining whether the capacity adjustment mode is started or not; determining a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, in combination with the reference operation parameter, or in combination with a current outdoor environment temperature in the current operation mode, and further comprising: if the capacity adjustment mode is started, determining the maximum operation parameter allowed by the area under the condition that the outdoor environment temperature in the current operation mode is less than or equal to the first set temperature in the current operation mode according to the area of the capacity of the operation indoor unit in a set capacity interval under the condition that the outdoor environment temperature in the current operation mode is less than or equal to the first set temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode; if the capacity adjustment mode is started, determining the maximum allowable operation parameter of the area under the condition that the outdoor environment temperature of the area under the current operation mode is higher than the second set temperature under the current operation mode as the final maximum operation parameter of the outdoor unit under the current operation mode according to the area of the capacity of the operation indoor unit in a set capacity interval under the condition that the outdoor environment temperature of the area under the current operation mode is higher than the second set temperature under the current operation mode; and if the capacity adjustment mode is not started, determining the final maximum operation parameter of the outdoor unit in the current operation mode according to the determination result of whether the rest mode of the air conditioning system is started or not and by combining the reference operation parameter.
In some embodiments, determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on further comprises: determining whether a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system are on; the determination result of whether the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are on is as follows: the method comprises the following steps that a rest mode of the air conditioning system and a capacity adjusting mode of the air conditioning system are both started, or the rest mode of the air conditioning system is started and the capacity adjusting mode of the air conditioning system is not started, or the rest mode of the air conditioning system is not started and the capacity adjusting mode of the air conditioning system is started, or the rest mode of the air conditioning system and the capacity adjusting mode of the air conditioning system are not started; determining a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, in combination with the reference operation parameter, or in combination with a current outdoor environment temperature in the current operation mode, and further comprising: if the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are both started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the rest mode is started, and selecting the smaller one of the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the capacity adjustment mode is started and the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the capacity adjustment mode is started; if the rest mode of the air conditioning system is started and the capacity adjustment mode of the air conditioning system is not started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the rest mode is started; if the rest mode of the air conditioning system is not started and the capacity adjustment mode of the air conditioning system is started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the capacity adjustment mode is started; and if the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are not started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode, which is determined according to the outdoor environment temperature in the current operation mode, of the outdoor fan in the current operation mode.
In accordance with another aspect of the present invention, there is provided a control device for an air conditioning system, the air conditioning system including: an outdoor unit and an indoor unit; the outdoor unit includes: an outdoor fan; the number of the indoor units is more than one; among the more than one indoor units, the indoor unit participating in the operation of the air conditioning system in the current operation mode is marked as an operation indoor unit; the control device of the air conditioning system comprises: an acquisition unit configured to acquire a current outdoor ambient temperature of the air conditioning system in a current operation mode of the air conditioning system; the control unit is configured to determine a current maximum operation parameter of the outdoor fan in the current operation mode according to the current outdoor environment temperature in the current operation mode, and record the current maximum operation parameter as a reference operation parameter; the control unit further configured to determine whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on; the rest mode is a mode for determining the actual maximum operation parameter of the outdoor fan by combining a preset rest time period; the capacity adjustment mode is a mode for determining the actual maximum operation parameter of the outdoor fan by combining the capacity of the operation indoor unit; the control unit is further configured to determine a final maximum operation parameter of the outdoor unit in the current operation mode as an actual maximum operation parameter of the outdoor unit in the current operation mode, according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, in combination with the reference operation parameter, or in combination with a current outdoor environment temperature in the current operation mode; the control unit is further configured to control the outdoor fan to operate according to the actual maximum operation parameter in the current operation mode.
In some embodiments, the determining, by the control unit, a current maximum operating parameter of the outdoor fan in the current operating mode according to the current outdoor environment temperature in the current operating mode includes: if the current outdoor environment temperature in the current operation mode is less than or equal to a first temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode as a first set operation parameter; if the current outdoor environment temperature in the current operation mode is greater than a second temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode as a second set operation parameter; the first temperature threshold in the current operating mode is different from the second temperature threshold in the current operating mode; if the current outdoor environment temperature in the current operation mode is greater than the first temperature threshold in the current operation mode and is less than or equal to the second temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode, and maintaining the current maximum operation parameter in the current operation mode determined last time.
In some embodiments, the control unit determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on includes: determining whether a rest mode of the air conditioning system is turned on; the determination result of whether the rest mode of the air conditioning system is started is that the rest mode is started or the rest mode is not started; the determining, by the control unit, a final maximum operating parameter of the outdoor unit in the current operating mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, and by combining the reference operating parameter or the current outdoor ambient temperature in the current operating mode, includes: if the rest mode is started, determining a difference value between the reference operation parameter determined by the current outdoor environment temperature in the current operation mode and a set parameter threshold value as a final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the current time of the air conditioning system is in a preset rest period in the rest mode; if the rest mode is started, determining the reference operation parameter determined by the current outdoor environment temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the current time of the air conditioning system is not in a preset rest period in the rest mode; and if the rest mode is not started, determining the reference operation parameter determined by the current outdoor environment temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode.
In some embodiments, the control unit determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, further comprises: determining whether a capacity adjustment mode of the air conditioning system is turned on; determining whether a capacity adjustment mode of the air conditioning system is started or not as a result of determining whether the capacity adjustment mode is started or not; the control unit determines a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, and in combination with the reference operation parameter, or in combination with a current outdoor environment temperature in the current operation mode, and further includes: if the capacity adjustment mode is started, determining the maximum operation parameter allowed by the area under the condition that the outdoor environment temperature in the current operation mode is less than or equal to the first set temperature in the current operation mode according to the area of the capacity of the operation indoor unit in a set capacity interval under the condition that the outdoor environment temperature in the current operation mode is less than or equal to the first set temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode; if the capacity adjustment mode is started, determining the maximum allowable operation parameter of the area under the condition that the outdoor environment temperature of the area under the current operation mode is higher than the second set temperature under the current operation mode as the final maximum operation parameter of the outdoor unit under the current operation mode according to the area of the capacity of the operation indoor unit in a set capacity interval under the condition that the outdoor environment temperature of the area under the current operation mode is higher than the second set temperature under the current operation mode; and if the capacity adjustment mode is not started, determining the final maximum operation parameter of the outdoor unit in the current operation mode according to the determination result of whether the rest mode of the air conditioning system is started or not and by combining the reference operation parameter.
In some embodiments, the control unit determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, further comprises: determining whether a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system are on; the determination result of whether the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are on is as follows: the method comprises the following steps that a rest mode of the air conditioning system and a capacity adjusting mode of the air conditioning system are both started, or the rest mode of the air conditioning system is started and the capacity adjusting mode of the air conditioning system is not started, or the rest mode of the air conditioning system is not started and the capacity adjusting mode of the air conditioning system is started, or the rest mode of the air conditioning system and the capacity adjusting mode of the air conditioning system are not started; the control unit determines a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, and in combination with the reference operation parameter, or in combination with a current outdoor environment temperature in the current operation mode, and further includes: if the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are both started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the rest mode is started, and selecting the smaller one of the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the rest mode is started and the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the capacity adjustment mode is started; if the rest mode of the air conditioning system is started and the capacity adjustment mode of the air conditioning system is not started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the rest mode is started; if the rest mode of the air conditioning system is not started and the capacity adjustment mode of the air conditioning system is started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the capacity adjustment mode is started; and if the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are not started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode, which is determined according to the outdoor environment temperature in the current operation mode, of the outdoor fan in the current operation mode.
In accordance with another aspect of the present invention, there is provided an air conditioning system including: the control device of the air conditioning system described above.
In accordance with the above method, a further aspect of the present invention provides a storage medium, which includes a stored program, wherein when the program runs, a device in which the storage medium is located is controlled to execute the control method of the air conditioning system described above.
Therefore, according to the scheme of the invention, the maximum frequency of the outdoor fan which can be operated is dynamically adjusted according to the outdoor environment temperature, the rated capacity of the operation indoor unit and the current system time by acquiring the outdoor environment temperature of the air conditioning system, the rated capacity of the operation indoor unit in more than one indoor unit and the current system time; therefore, the maximum frequency of the outdoor fan capable of running is dynamically adjusted, the running frequency of the outdoor fan is favorably reduced on the premise of ensuring the reliability of the unit, and energy conservation and noise reduction are realized.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a flowchart illustrating an embodiment of a control method of an air conditioning system according to the present invention;
FIG. 2 is a schematic diagram of a control device of an air conditioning system according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating an embodiment of a method for controlling the frequency of an outdoor fan of an air conditioning system according to the present invention.
The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:
102-an obtaining unit; 104-control unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In consideration, the outdoor fan of the air conditioning system mainly achieves the purpose of exchanging heat for the outdoor heat exchanger of the air conditioning system through air flowing. The outdoor unit of the air conditioning system is provided with the pressure sensor, and the frequency of the outdoor fan can be adjusted by detecting the pressure of the unit through the pressure sensor, so that the heat exchange effect is controlled. The mode of adjusting the frequency of the outdoor fan according to the pressure of the unit is a rough control mode and cannot accurately reflect the actual heat exchange effect. The maximum frequency of the outdoor fan is set according to the maximum requirement of the unit under severe working conditions, so that the output of the outdoor fan can meet all the working conditions, the frequency range of the outdoor fan is wide, the maximum working frequency is different according to different cold quantities of the outdoor unit, and the maximum working frequency is generally about 40 Hz. All, according to the mode of unit pressure adjustment outdoor fan frequency, often lead to outdoor fan output to be greater than the heat transfer volume of actual demand, certain noise can be brought in the increase of outdoor fan frequency, influences user experience.
According to an embodiment of the present invention, a control method of an air conditioning system is provided, as shown in fig. 1, which is a schematic flow chart of an embodiment of the method of the present invention. The air conditioning system includes: an outdoor unit and an indoor unit; the outdoor unit includes: an outdoor fan. The number of the indoor units is more than one. Among the above indoor units, the indoor unit participating in the operation of the air conditioning system in the current operation mode is recorded as an operation indoor unit. The control method of the air conditioning system comprises the following steps: step S110 to step S150.
At step S110, in the current operation mode of the air conditioning system, a current outdoor ambient temperature of the air conditioning system is acquired. The current operation mode of the air conditioning system may be an operation mode of any one of functions of the air conditioning system, such as a cooling mode, a heating mode, and the like.
In step S120, according to the current outdoor environment temperature in the current operation mode, the current maximum operation parameter of the outdoor fan in the current operation mode is determined and recorded as the reference operation parameter. The current maximum operation parameter of the outdoor fan and the operation parameter in the reference operation parameter may be parameters such as an output frequency and an output rotation speed of the outdoor fan. For example: determining the maximum output frequency F of the outdoor fan operable in the cooling modeMaximum ofThe maximum frequency value XHz.
In some embodiments, in step S120, according to the current outdoor environment temperature in the current operation mode, the current maximum operation parameter of the outdoor fan in the current operation mode is determined and recorded as the reference operation parameter, which includes any one of the following determination situations.
Fig. 3 is a flowchart illustrating an embodiment of a method for controlling the frequency of an outdoor fan of an air conditioning system according to the present invention. As shown in fig. 3, a method for controlling the frequency of an outdoor fan of an air conditioning system according to the present invention is a method for dynamically adjusting the maximum output frequency of an outdoor fan, and includes:
The first scenario of determination based on outdoor ambient temperature: and if the current outdoor environment temperature in the current operation mode is less than or equal to the first temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode as a first set operation parameter. The first temperature threshold may be a first set temperature t 1.
For example: referring to the example shown in fig. 3, in step 1, the first case: when the outdoor environment temperature T is detected to be less than or equal to the first set temperature T1, the maximum output frequency F of the outdoor fan is allowedMaximum ofIs the first set frequency X1 Hz.
The second scenario of determination based on outdoor ambient temperature: and if the current outdoor environment temperature in the current operation mode is greater than a second temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode as a second set operation parameter. The first temperature threshold in the current operation mode is different from the second temperature threshold in the current operation mode, that is, the second temperature threshold in the current operation mode is a temperature threshold different from the first temperature threshold in the current operation mode. The second temperature threshold may be a second set temperature t 2.
For example: referring to the example shown in fig. 3, in step 1, the second case: when the outdoor environment temperature T is detected to be more than the second set temperature T2, the maximum output frequency F of the outdoor fan is allowedMaximum ofIs the second set frequency X2 Hz.
The third is based on the determination of the outdoor ambient temperature: if the current outdoor environment temperature in the current operation mode is greater than the first temperature threshold in the current operation mode and is less than or equal to the second temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode, and maintaining the current maximum operation parameter in the current operation mode determined last time.
For example: referring to the example shown in FIG. 3, in step 1, in the third case, when the first set temperature T1 < the outdoor environment temperature T ≦ the second set temperature T2 is detected, the maximum output frequency of the outdoor fan is allowedFMaximum ofInvariable, i.e. maximum output frequency F of outdoor fanMaximum ofThe maximum frequency value of the previous interval is maintained. For example: if the outdoor environment temperature T is less than or equal to the first set temperature T1 in the previous interval, the maximum output frequency F of the outdoor fan is equal to or less than the second set temperature T2 when the first set temperature T1 is greater than the outdoor environment temperature TMaximum ofThe first set frequency X1Hz is maintained. If the outdoor environment temperature T is greater than the second set temperature T2 in the previous interval, the maximum output frequency F of the outdoor fan is greater than the first set temperature T1 and less than or equal to the second set temperature T2Maximum ofThe second set frequency X2Hz is maintained.
In the cooling mode, the first set temperature t1 is less than the second set temperature t2, and the first set frequency X1 is less than the second set frequency X2. In the heating mode, the first set temperature t1 is less than the second set temperature t2, and the first set frequency X1 is greater than the second set frequency X2.
Supposing that the maximum output frequency F of the outdoor fan is finally obtained according to the outdoor environment temperatureMaximum ofThe maximum frequency value XHz is the maximum frequency value XHz, which is the value of the first set frequency X1Hz or the second set frequency X2 Hz.
For example: in the cooling mode, the first set temperature t1 is 37 degrees (e.g., 37 degrees C.), and the second set temperature t2 is 39 degrees. In general, the second set temperature t2 is equal to the first set temperature t1+ the set temperature threshold Δ t. The temperature threshold delta T is set to be about 2-3 degrees, and a buffer interval is reserved to prevent the output frequency fluctuation of the outdoor fan caused by the fluctuation of the outdoor environment temperature T when the outdoor fan just works at the critical point.
The buffer interval is reserved, so that the output frequency fluctuation of the fan can be prevented, and the condition that the actual operating frequency of the fan runs to the maximum frequency is mainly treated. Such as: if no buffer interval exists, the outdoor environment temperature T is less than or equal to 38 ℃, and the maximum output of the fan is 40 ℃; the outdoor environment temperature T is more than 38 degrees, and the maximum frequency of the fan is 44 Hz. Then when the outer loop fluctuates up and down at 38/39 degrees (temperature sensor sampling, temperature fluctuation is a normal phenomenon), since the fan is already running to the maximum frequency of 44Hz, when the outdoor environment temperature T fluctuates to 38 degrees, the maximum frequency of the fan will immediately change from 44Hz to 40 Hz.
The first setting frequency X1 may take the value of 37Hz, and the second setting frequency X2 may take the value of 44 Hz. The values of the first set frequency X1 and the second set frequency X2 are related to the outdoor environment temperature T, the cold quantity of the unit and the number of outdoor fans. The maximum operation frequency of a unit fan with large cooling capacity is larger than that of a unit with small cooling capacity; the single-fan unit is higher than the double-fan unit in maximum operable frequency of the units with the same cooling capacity; when the outdoor environment temperature T is higher than the outdoor environment temperature T during refrigeration, the maximum frequency of the fan is higher. However, specific values are generally determined in conjunction with assays.
In the heating mode, the first set temperature t1 is 2-3 deg.C, and the second set temperature t2 is 4-5 deg.C. The first setting frequency X1 may take the value of 40Hz, and the second setting frequency X2 may take the value of 35 Hz. For example: in the heating mode, when the outdoor environment temperature T is less than or equal to 3 ℃, the maximum value of the first set frequency X1 is 38 Hz; when the outdoor environment temperature T is more than 5 degrees, the maximum value of the first set frequency X1 is 35 Hz. If the time is in the time period of the rest mode, the delta adjustment quantity is subtracted on the basis of the value. Similarly, in the capacity adjustment mode, when the capacity of the indoor unit is smaller than X kilowatts, if the outdoor environment temperature T is smaller than or equal to 3 degrees, the value Y1 is taken, and if the outdoor environment temperature T is greater than 5 degrees, the value Y2 is taken, and the value Y1 is greater than the value Y2, which is generally determined by experiments.
At step S130, it is determined whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is turned on. The rest mode is a mode for determining the actual maximum operation parameter of the outdoor fan by combining a preset rest time period. The rest period may be one period or a plurality of periods, and any period may be set by default in the system or may be flexibly adjusted by the user according to the needs of the user. The capacity adjustment mode is a mode for determining the actual maximum operation parameter of the outdoor fan by combining the capacity of the operation indoor unit. Of course, it is also necessary to obtain the current time of the air conditioning system in the rest mode, and to obtain the capacity (e.g., the rated capacity) of the operating indoor unit of the air conditioning system in the capacity adjustment mode.
At step S140, a final maximum operation parameter of the outdoor unit in the current operation mode is determined as an actual maximum operation parameter of the outdoor unit in the current operation mode, according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is turned on, in combination with the reference operation parameter, or in combination with a current outdoor environment temperature in the current operation mode.
In step S150, the outdoor fan is controlled to operate according to the actual maximum operation parameter in the current operation mode.
The scheme of the invention provides an intelligent adjusting method for the frequency of an outdoor fan of an air conditioning system, which dynamically adjusts the maximum frequency of the outdoor fan which can be operated according to the outdoor environment temperature, the rated capacity of an operating indoor unit and the current system time, properly reduces the operating frequency of the outdoor fan on the premise of ensuring the reliability of a unit, saves energy and reduces noise, and improves the comfort experience of high-demand users.
The scheme of the invention is applied to a multi-split air conditioner which generally comprises at least one outdoor unit and at least one indoor unit. In a common household multi-split air conditioner, the number of indoor units is 2-8, and the indoor units are selected according to user requirements. In view of the fact that only the operating indoor unit has capacity requirements, cooling or heating is required. The indoor unit which is shut down, has a fault and is shut down at a temperature point does not participate in judgment. Therefore, in the solution of the present invention, the maximum frequency at which the outdoor fan can operate is determined by combining the capacity of the operating indoor unit in the air conditioning system.
As an exemplary illustration, assume that the outdoor fan is operable at a maximum output frequency F for an outdoor unit having a capacity R of YkWMaximum ofIs the maximum frequency value XHz, the minimum output frequency FMinimum sizeIs the minimum frequency value MHz. Generally, the outdoor fan is adjusted to operate between the minimum frequency value MHz and the maximum frequency value XHz by detecting the difference value between the current target pressure and the actual pressure of the unit. The scheme of the invention detects the current outdoor environment temperature in real timeThe maximum frequency value XHz of the outdoor fan is intelligently regulated and controlled according to the degree, the rated capacity of the indoor unit in operation and whether the current system time is in the night time period or the noon break time period.
Such as: outdoor unit with capacity of 18kW, maximum output frequency F of outdoor fan in refrigeration modeMaximum ofIs 44Hz, minimum output frequency FMinimum sizeIs 5 Hz.
The above parameters are example parameters, and the actual parameters can be different according to the cold quantity of the unit, the number of outdoor fans, the running condition of the unit and the like.
In some embodiments, the determining whether at least one of the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system is on in step S130 includes: determining whether a rest mode of the air conditioning system is turned on. And determining whether the rest mode of the air conditioning system is started or not, wherein the determination result is that the rest mode is started or not.
As shown in fig. 3, a method for controlling the frequency of an outdoor fan of an air conditioning system according to the present invention, specifically a method for dynamically adjusting the maximum output frequency of an outdoor fan, further includes:
step 2, judging whether the rest mode is started: if yes, go to step 3. Otherwise, step 4 is executed.
The rest mode, namely the time adjustment mode, is a self-defined mode according to the function of unit, means in the time quantum that the user probably is in rest, restricts outdoor fan maximum frequency so that reduce the noise, improve user experience. Such as night hours 22:30-7:00, lunch break hours 12:30-13:30, and other times customized by the user.
Accordingly, in step S140, the final maximum operation parameter of the outdoor unit in the current operation mode is determined according to the determination result of whether at least one of the rest mode and the capacity adjustment mode of the air conditioning system is on, and in combination with the reference operation parameter or the current outdoor environment temperature in the current operation mode, including any one of the following determination situations based on the rest mode.
The first is based on the determined situation of the rest mode: if the rest mode is started, determining a difference value between the reference operation parameter determined by the current outdoor environment temperature in the current operation mode and a set parameter threshold value as a final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the current time of the air conditioning system is in a preset rest period in the rest mode.
The second rest mode-based determination scenario: if the rest mode is started, determining the reference operation parameter determined by the current outdoor environment temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the current time of the air conditioning system is not in the preset rest time period in the rest mode.
As shown in fig. 3, a method for controlling the frequency of an outdoor fan of an air conditioning system according to the present invention, specifically a method for dynamically adjusting the maximum output frequency of an outdoor fan, further includes:
step 3, under the condition that the rest mode is started, determining the maximum output frequency F of the outdoor fan according to the rest modeMaximum ofA frequency threshold Δ XHz is set for the maximum frequency value XHz — for the first frequency value X3Hz, after which step 5 can be executed.
The air conditioning system outdoor unit is generally provided with a GPRS (general packet radio service) module, and the GPRS module can acquire accurate system time from a server side and provide time for the air conditioning system unit. When the outdoor unit of the air conditioning system receives GPRS service, if the outdoor unit is judged to be in the time period of night time, namely the first set time H1-the second set time H2, or judged to be in the time period of noon break time, namely the third set time H3-the fourth set time H4, the maximum frequency of the outdoor fan is reduced by a set frequency threshold value delta XHz on the basis of determining the maximum frequency value XHz of the outdoor fan according to the outdoor environment temperature.
The scheme of the invention can be provided with a plurality of rest modes which are optional, for example, a user can freely select N rest modes, different time periods and outdoor fan frequency adjustment values are selected, and N is a positive integer.
Optionally, the scheme of the invention can also open time period setting to the user. If there is no optional time period in the existing N rest modes, the user can enter the rest mode setting mode, and set the beginning and ending time of the night time period and the noon break time period of any one rest mode according to the self requirement.
Under the condition of combining the outdoor environment temperature and whether the rest mode is started or not, the maximum output frequency F of the outdoor fan is obtainedMaximum ofIs the first frequency value X3 Hz.
The first frequency value X3Hz is smaller than a first set frequency X1Hz, the first frequency value X3Hz is smaller than a second set frequency X2Hz, the first frequency value X3Hz is a maximum frequency value XHz-a set frequency threshold value Δ XHz, the maximum frequency value XHz is the maximum output frequency of the outdoor fan finally obtained according to the outdoor ambient temperature THz, and the maximum frequency value XHz is obtained from the first set frequency X1Hz or the second set frequency X2 Hz. The frequency threshold Δ XHz can be set according to the mode selected by the user, and is generally 3-8 Hz.
For example: the modes selected by the user are different, and mainly means that the user can select a plurality of preset schemes, and in which time period, the maximum frequency of the fan can be slightly adjusted to be smaller, and the delta X is adjusted downwards. Such as night time 22:30-7:00, noon break time 12:30-13:30, and user-defined time. The Δ X may be 3hz/5hz/8hz, etc., to reduce noise properly. Certainly, the value range of the delta X cannot be too large, and the comfort is prevented from being influenced.
The third is based on the determined situation of the rest mode: and if the rest mode is not started, determining the reference operation parameter determined by the current outdoor environment temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode.
As shown in fig. 3, a method for controlling the frequency of an outdoor fan of an air conditioning system according to the present invention, specifically a method for dynamically adjusting the maximum output frequency of an outdoor fan, further includes:
step 4, in the rest modeDetermining the maximum output frequency F of the outdoor fan in case of startingMaximum ofAfter the first frequency value X3Hz is the maximum frequency value XHz, step 5 may be executed.
In some embodiments, the determining whether at least one of the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system is turned on in step S130 further includes: determining whether a capacity adjustment mode of the air conditioning system is turned on. And determining whether the capacity adjustment mode of the air conditioning system is started or not according to a determination result, wherein the determination result is that the capacity adjustment mode is started or not.
As shown in fig. 3, a method for controlling the frequency of an outdoor fan of an air conditioning system according to the present invention, specifically a method for dynamically adjusting the maximum output frequency of an outdoor fan, further includes:
and 5, judging whether the capacity adjustment mode is started or not: if yes, go to step 6. Otherwise, step 7 is performed.
And the capacity adjusting mode is a mode for adjusting the maximum output frequency of the outdoor fan according to the running state of the indoor unit.
Accordingly, in step S140, the final maximum operation parameter of the outdoor unit in the current operation mode is determined according to the determination result of whether at least one of the rest mode and the capacity adjustment mode of the air conditioning system is turned on, and in combination with the reference operation parameter or the current outdoor ambient temperature in the current operation mode, and further includes any one of the following determination situations based on the capacity adjustment mode:
the first is based on the determined situation of the capacity adjustment mode: if the capacity adjustment mode is started, determining the maximum allowable operation parameter of the area under the condition that the outdoor environment temperature of the area under the current operation mode is less than or equal to the first set temperature under the current operation mode as the final maximum operation parameter of the outdoor unit under the current operation mode according to the area of the capacity of the operation indoor unit in a set capacity interval under the condition that the outdoor environment temperature of the area under the current operation mode is less than or equal to the first set temperature under the current operation mode.
As shown in fig. 3, a method for controlling the frequency of an outdoor fan of an air conditioning system according to the present invention, specifically a method for dynamically adjusting the maximum output frequency of an outdoor fan, further includes:
step 6, under the condition that the capacity adjusting mode is started, determining the maximum output frequency F of the outdoor fan according to the outdoor environment temperature and the running capacity of the indoor unitMaximum ofTo the second frequency value ZHz, step 8 may then be performed.
In a multi-split use occasion, one outdoor unit is generally matched with a plurality of indoor units, and a switch of any indoor unit can be freely set by a user. In addition, when the same indoor unit is started, the operation may be stopped because the indoor ambient temperature has reached the temperature requirement set by the user. Therefore, the starting condition of the indoor unit is not fixed, and the frequency requirements on the outdoor fan are different. In the scheme of the invention, the outdoor unit detects whether the indoor unit operates in real time, and dynamically adjusts the maximum operating frequency of the outdoor fan according to the rated capacity R of the operating indoor unit:
when the detected outdoor environment temperature T is less than or equal to the first set temperature T1:
and if the rated capacity R of the running indoor unit is less than or equal to the first set capacity R1, allowing the maximum output frequency of the outdoor fan to be a first corresponding frequency Z11.
And if the first set capacity R1 is less than the rated capacity R of the running indoor unit and less than or equal to the second set capacity R2, the maximum output frequency of the outdoor fan is allowed to be a second corresponding frequency Z12.
And if the second set capacity R2 is less than the rated capacity R of the running indoor unit and less than or equal to the third set capacity R3, the maximum output frequency of the outdoor fan is allowed to be a third corresponding frequency Z13.
And if the third set capacity R3 is less than the rated capacity R of the running indoor unit and less than or equal to the fourth set capacity R4, the maximum output frequency of the outdoor fan is allowed to be a fourth corresponding frequency Z14.
And if the fourth set capacity R4 is less than the rated capacity R of the running indoor unit and less than or equal to the fifth set capacity R5, the maximum output frequency of the outdoor fan is allowed to be a fifth corresponding frequency Z15.
And if the rated capacity R of the running indoor unit is larger than the fifth set capacity R5, the maximum output of the outdoor fan is allowed to be the sixth corresponding frequency Z16.
Wherein: the first set capacity r1 < the second set capacity r2 < the third set capacity r3 < the fourth set capacity r4 < the fifth set capacity r5, and the first corresponding frequency Z11 < the second corresponding frequency Z12 < the third corresponding frequency Z13 < the fourth corresponding frequency Z14 < the fifth corresponding frequency Z15 < the sixth corresponding frequency Z16.
A second capacity adjustment mode-based determination scenario: if the capacity adjustment mode is started, determining the maximum operation parameter allowed by the area under the condition that the outdoor environment temperature in the current operation mode is higher than the second set temperature in the current operation mode according to the area of the capacity of the operation indoor unit in the set capacity interval under the condition that the outdoor environment temperature in the current operation mode is higher than the second set temperature in the current operation mode, and determining the maximum operation parameter as the final maximum operation parameter of the outdoor unit in the current operation mode.
As shown in fig. 3, a method for controlling the frequency of an outdoor fan of an air conditioning system according to the present invention, specifically a method for dynamically adjusting the maximum output frequency of an outdoor fan, further includes: in step 6, similarly, when the detected outdoor environment temperature T > the second set temperature T2:
and if the rated capacity R of the running indoor unit is less than or equal to the first set capacity R1, allowing the maximum output frequency of the outdoor fan to be a seventh corresponding frequency Z21.
And if the first set capacity R1 is less than the rated capacity R of the running indoor unit and less than or equal to the second set capacity R2, the maximum output frequency of the outdoor fan is allowed to be the eighth corresponding frequency Z22.
And if the second set capacity R2 is less than the rated capacity R of the running indoor unit and less than or equal to the third set capacity R3, the maximum output frequency of the outdoor fan is allowed to be a ninth corresponding frequency Z23.
And if the third set capacity R3 is less than the rated capacity R of the running indoor unit and less than or equal to the fourth set capacity R4, the maximum output frequency of the outdoor fan is allowed to be the tenth corresponding frequency Z24.
And if the fourth set capacity R4 is less than the rated capacity R of the running indoor unit and less than or equal to the fifth set capacity R5, the maximum output frequency of the outdoor fan is allowed to be the eleventh corresponding frequency Z25.
If the rated capacity R of the running indoor unit is larger than the fifth set capacity R5, the maximum output of the outdoor fan is allowed to be the twelfth corresponding frequency Z26.
Wherein: the first set displacement r1 < the second set displacement r2 < the third set displacement r3 < the fourth set displacement r4 < the fifth set displacement r5, and the seventh corresponding frequency Z21 < the eighth corresponding frequency Z22 < the ninth corresponding frequency Z23 < the tenth corresponding frequency Z24 < the eleventh corresponding frequency Z25 < the twelfth corresponding frequency Z26.
In the above scheme, the capacity of the running indoor unit is divided into different ranges, when the sum of the capacities of the running indoor units is smaller, the maximum output frequency of the allowed outdoor fan is relatively smaller, and otherwise, the maximum output frequency is increased. Such as: the first set capacity r1 can take 5kW, the second set capacity r2 can take 8kW, the third set capacity r3 can take 10kW, the fourth set capacity r4 can take 11.2kW, and the fifth set capacity r5 can take 14 kW. The capacity of 16kW, 18kW, 20kW and the like can be continuously divided into sections, and the capacity can be adjusted according to the configuration condition of the indoor units and the capacity of the outdoor units. Maximum output frequency F of outdoor fanMaximum ofThe adjustment is generally between 30 Hz and 50Hz, and the adjustment is determined according to the dividing of the capacity section of the indoor unit, the size of an outer ring, the cold quantity of the outdoor unit and the like according to the experimental conditions.
For example: the larger the capacity of the indoor unit is, the larger the value of the maximum operating frequency of the fan is. Generally, the ratio between the capacity of a multi-connected outdoor unit and the capacity of an indoor unit is required, and the over-matching is not allowed, because the refrigeration and heating effects of the unit are influenced by the over-matching of the indoor unit. For example, for an 8kW outdoor unit, the sum of the capacities of the indoor units does not generally exceed 12kW (the total capacity of the indoor units is approximately 0.5-1.4 times the capacity of the outdoor unit). When the interval is divided according to the internal unit capacity, the large capacity interval is not required to be divided (the division is irrelevant, and the actual unit cannot be executed); for an outer machine of 40kW, the inner machine capacity division naturally takes into account a somewhat larger interval. Since specific values are written, it should be noted that the values are not fixed and depend on the unit capacity. The capacity interval may be divided according to actual requirements, for example, the capacity interval may be divided into more or less smaller intervals, or may be wider or less than several intervals.
The third scenario is based on the determination of the capacity adjustment mode: and if the capacity adjustment mode is not started, determining the final maximum operation parameter of the outdoor unit in the current operation mode according to the determination result of whether the rest mode of the air conditioning system is started or not and by combining the reference operation parameter.
As shown in fig. 3, a method for controlling the frequency of an outdoor fan of an air conditioning system according to the present invention, specifically a method for dynamically adjusting the maximum output frequency of an outdoor fan, further includes: step 7, under the condition that the capacity adjustment mode is not started, determining the maximum output frequency F of the outdoor fanMaximum ofThe final frequency value X0Hz is the first frequency value X3 Hz.
In some embodiments, the determining whether at least one of the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system is turned on in step S130 further includes: determining whether a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system are on. The determination result of whether the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are on is as follows: the method comprises the following steps that a rest mode of the air conditioning system and a capacity adjusting mode of the air conditioning system are both started, or the rest mode of the air conditioning system is started and the capacity adjusting mode of the air conditioning system is not started, or the rest mode of the air conditioning system is not started and the capacity adjusting mode of the air conditioning system is started, or the rest mode of the air conditioning system and the capacity adjusting mode of the air conditioning system are not started.
Accordingly, in step S140, according to a determination result of whether at least one of the rest mode and the capacity adjustment mode of the air conditioning system is turned on, and in combination with the reference operation parameter or the current outdoor environment temperature in the current operation mode, a final maximum operation parameter of the outdoor unit in the current operation mode is determined, which further includes any one of the following comprehensive determination situations:
the first comprehensive determination scenario: if the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are both started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the rest mode is started, and selecting the smaller one of the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the rest mode is started and the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the capacity adjustment mode is started.
As shown in fig. 3, a method for controlling the frequency of an outdoor fan of an air conditioning system according to the present invention, specifically a method for dynamically adjusting the maximum output frequency of an outdoor fan, further includes: step 8, under the condition that the capacity adjustment mode is started, determining the maximum output frequency F of the outdoor fanMaximum ofThe smaller of the first frequency value X3Hz and the second frequency value ZHz is taken as the final frequency value X0 Hz.
A second comprehensive determination scenario: if the rest mode of the air conditioning system is started and the capacity adjustment mode of the air conditioning system is not started, the final maximum operation parameter of the outdoor unit in the current operation mode is selected, and the final maximum operation parameter of the outdoor unit in the current operation mode is determined under the condition that the rest mode is started.
The third scenario of comprehensive determination: if the rest mode of the air conditioning system is not started and the capacity adjustment mode of the air conditioning system is started, the final maximum operation parameter of the outdoor unit in the current operation mode is selected when the capacity adjustment mode is started, and the final maximum operation parameter of the outdoor unit in the current operation mode is determined.
A fourth integrated determination scenario: and if the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are not started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode, which is determined according to the outdoor environment temperature in the current operation mode, of the outdoor fan in the current operation mode.
Finally, the maximum allowable output frequency F of the outdoor fanMaximum ofThe final frequency value X0Hz may be a second frequency value ZHz of the outdoor air determined according to the capacity R of the indoor unit operating in the capacity adjustment mode. And the second frequency value ZHz of the outdoor air is one of a first corresponding frequency Z11-a sixth corresponding frequency Z16, a seventh corresponding frequency Z21-a twelfth corresponding frequency Z26 which are determined according to the outdoor environment temperature T and the capacity R of the running indoor unit. The maximum frequency value X0Hz of the allowed outdoor fan may also be determined according to the outdoor environment temperature T and the first frequency value X3Hz determined in the rest mode. If the second frequency value ZHz is smaller than the first frequency value X3Hz, the first frequency value X3Hz is selected, that is, the final frequency value X0Hz of the outdoor fan is equal to the first frequency value X3 Hz. Otherwise, selecting a second frequency value ZHz, and obtaining a final frequency value X0Hz as the second frequency value ZHz by the outdoor fan.
Optionally, the user may also select whether to enable the determination of the maximum output frequency F of the outdoor fan according to the rest modeMaximum ofDetermining the maximum output frequency F of the outdoor fan according to the capacity adjustment modeMaximum ofAnd the like. If the rest mode is not started, the maximum output frequency F of the outdoor fan is finally obtainedMaximum ofThe lower of the maximum frequency value XHz determined from the outdoor ambient temperature and the second frequency value ZHz determined from the capacity of the operating indoor unit. If the capacity adjusting mode is not started, the maximum output frequency F of the outdoor fan is finally obtainedMaximum ofIs a first frequency value X3Hz determined based on the outdoor ambient temperature and the capacity of the operating indoor unit. If the rest mode and the capacity adjusting mode are not started, the maximum output frequency F of the outdoor fan is determinedMaximum ofIs the maximum frequency value XHz determined from the outdoor ambient temperature.
According to the scheme of the invention, the maximum frequency of the outdoor fan which can be operated is dynamically adjusted according to the outdoor environment temperature, the rated capacity of the running indoor unit and whether the current system time is in the night time period or the noon break time period, so that the purposes of energy conservation and noise reduction are achieved.
By adopting the technical scheme of the embodiment, the maximum frequency of the outdoor fan which can be operated is dynamically adjusted according to the outdoor environment temperature, the rated capacity of the operation indoor unit and the current system time by acquiring the outdoor environment temperature of the air conditioning system, the rated capacity of the operation indoor unit in more than one indoor unit and the current system time. Therefore, the maximum frequency of the outdoor fan capable of running is dynamically adjusted, the running frequency of the outdoor fan is favorably reduced on the premise of ensuring the reliability of the unit, and energy conservation and noise reduction are realized.
According to an embodiment of the present invention, there is also provided a control apparatus of an air conditioning system corresponding to the control method of the air conditioning system. Referring to fig. 2, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The air conditioning system includes: outdoor unit and indoor unit. The outdoor unit includes: an outdoor fan. The number of the indoor units is more than one. Among the above indoor units, the indoor unit participating in the operation of the air conditioning system in the current operation mode is recorded as an operation indoor unit. The control device of the air conditioning system comprises: an acquisition unit 102 and a control unit 104.
The obtaining unit 102 is configured to obtain a current outdoor ambient temperature of the air conditioning system in a current operation mode of the air conditioning system. The specific functions and processes of the acquiring unit 102 are referred to in step S110. The current operation mode of the air conditioning system may be an operation mode of any one of functions of the air conditioning system, such as a cooling mode, a heating mode, and the like.
And the control unit 104 is configured to determine a current maximum operating parameter of the outdoor fan in the current operating mode according to the current outdoor environment temperature in the current operating mode, and record the current maximum operating parameter as a reference operating parameter. The specific function and processing of the control unit 104 are referred to in step S120. The current maximum operation parameter of the outdoor fan and the operation parameter in the reference operation parameter may be parameters such as an output frequency and an output rotation speed of the outdoor fan. For example: determining the maximum output frequency F of the outdoor fan operable in the cooling modeMaximum ofThe maximum frequency value XHz.
In some embodiments, the control unit 104 determines, according to the current outdoor ambient temperature in the current operation mode, a current maximum operation parameter of the outdoor fan in the current operation mode, which is recorded as a reference operation parameter, and includes any one of the following determination situations.
Fig. 3 is a flowchart illustrating an embodiment of an outdoor fan frequency control apparatus of an air conditioning system according to the present invention. As shown in fig. 3, the present invention provides an outdoor fan frequency control device for an air conditioning system, and in particular, a device for dynamically adjusting a maximum output frequency of an outdoor fan, including:
The first scenario of determination based on outdoor ambient temperature: the control unit 104 is specifically further configured to determine the current maximum operating parameter in the current operating mode as the first set operating parameter if the current outdoor environment temperature in the current operating mode is less than or equal to the first temperature threshold in the current operating mode. The first temperature threshold may be a first set temperature t 1.
For example: referring to the example shown in fig. 3, in step 1, the first case: when the outdoor environment temperature T is detected to be less than or equal to the first set temperature T1, the maximum output frequency F of the outdoor fan is allowedMaximum ofIs the first set frequency X1 Hz.
The second scenario of determination based on outdoor ambient temperature: the control unit 104 is specifically further configured to determine the current maximum operating parameter in the current operating mode as a second set operating parameter if the current outdoor environment temperature in the current operating mode is greater than a second temperature threshold in the current operating mode. The first temperature threshold in the current operation mode is different from the second temperature threshold in the current operation mode, that is, the second temperature threshold in the current operation mode is a temperature threshold different from the first temperature threshold in the current operation mode. The second temperature threshold may be a second set temperature t 2.
For example: referring to the example shown in fig. 3, in step 1, the second case: when the outdoor environment temperature T is detected to be larger than a second set temperature T2, the maximum output frequency F of the outdoor fan is allowedMaximum ofIs the second set frequency X2 Hz.
The third is based on the determination of the outdoor ambient temperature: the control unit 104 is specifically further configured to determine a current maximum operating parameter in the current operating mode and maintain the previously determined current maximum operating parameter in the current operating mode if the current outdoor environment temperature in the current operating mode is greater than the first temperature threshold in the current operating mode and is less than or equal to the second temperature threshold in the current operating mode.
For example: referring to the example shown in FIG. 3, in step 1, in the third case, when the first set temperature T1 < the outdoor environment temperature T ≦ the second set temperature T2 is detected, the maximum output frequency F of the outdoor fan is allowedMaximum ofInvariable, i.e. maximum output frequency F of outdoor fanMaximum ofThe maximum frequency value of the previous interval is maintained. For example: if the outdoor environment temperature T is less than or equal to the first set temperature T1 in the previous interval, the maximum output frequency F of the outdoor fan is equal to or less than the second set temperature T2 when the first set temperature T1 is greater than the outdoor environment temperature TMaximum ofThe first set frequency X1Hz is maintained. If the outdoor environment temperature T is greater than the second set temperature T2 in the previous interval, the maximum output frequency F of the outdoor fan is equal to or lower than the second set temperature T2 under the condition that the first set temperature T1 is greater than the outdoor environment temperature TMaximum ofThe second set frequency X2Hz is maintained.
In the cooling mode, the first set temperature t1 is less than the second set temperature t2, and the first set frequency X1 is less than the second set frequency X2. In the heating mode, the first setting temperature t1 is less than the second setting temperature t2, and the first setting frequency X1 is greater than the second setting frequency X2.
Supposing that the maximum output frequency F of the outdoor fan is finally obtained according to the outdoor environment temperatureMaximum ofThe maximum frequency value is XHz, the maximum frequency value XHz is at the first set frequency X1Hz or the second set frequency X1The set frequency X2Hz takes on a value.
For example: in the cooling mode, the first set temperature t1 is 37 degrees (e.g., 37 degrees C.), and the second set temperature t2 is 39 degrees. In general, the second set temperature t2 is equal to the first set temperature t1+ the set temperature threshold Δ t. The temperature threshold delta T is set to be about 2-3 degrees, and a buffer interval is reserved to prevent the output frequency fluctuation of the outdoor fan caused by the fluctuation of the outdoor environment temperature T when the outdoor fan just works at the critical point.
The first setting frequency X1 may take the value of 37Hz, and the second setting frequency X2 may take the value of 44 Hz. The values of the first set frequency X1 and the second set frequency X2 are related to the outdoor environment temperature T, the refrigerating capacity of the unit and the number of outdoor fans.
In the heating mode, the first set temperature t1 is 2-3 deg.C, and the second set temperature t2 is 4-5 deg.C. The first setting frequency X1 may take the value of 40Hz, and the second setting frequency X2 may take the value of 35 Hz.
The control unit 104 is further configured to determine whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on. The rest mode is a mode for determining the actual maximum operation parameter of the outdoor fan by combining a preset rest time period. The specific function and processing of the control unit 104 are also referred to in step S130. The rest period may be one period or a plurality of periods, and any period may be set by default in the system or may be flexibly adjusted by the user according to the needs of the user. The capacity adjustment mode is a mode for determining the actual maximum operation parameter of the outdoor fan by combining the capacity of the operation indoor unit. Of course, it is also necessary to obtain the current time of the air conditioning system in the rest mode, and to obtain the capacity (e.g., the rated capacity) of the operating indoor unit of the air conditioning system in the capacity adjustment mode.
The control unit 104 is further configured to determine a final maximum operation parameter of the outdoor unit in the current operation mode as an actual maximum operation parameter of the outdoor unit in the current operation mode, according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, in combination with the reference operation parameter, or in combination with a current outdoor environment temperature in the current operation mode. The specific function and processing of the control unit 104 are also referred to in step S140.
The control unit 104 is further configured to control the outdoor fan to operate according to the actual maximum operation parameter in the current operation mode. The specific function and processing of the control unit 104 are also referred to in step S150.
The scheme of the invention provides an intelligent outdoor fan frequency adjusting device of an air conditioning system, which dynamically adjusts the maximum frequency of the outdoor fan which can be operated according to the outdoor environment temperature, the rated capacity of an operating indoor unit and the current system time, properly reduces the operating frequency of the outdoor fan on the premise of ensuring the reliability of a unit, saves energy and reduces noise, and improves the comfort experience of high-demand users.
The scheme of the invention is applied to a multi-split air conditioner which generally comprises at least one outdoor unit and at least one indoor unit. In a common household multi-split air conditioner, the number of indoor units is 2-8, and the indoor units are selected according to user requirements. In view of the fact that only the operating indoor unit has capacity requirements, cooling or heating is required. The indoor unit which is shut down, has a fault and is shut down at a temperature point does not participate in judgment. Therefore, in the solution of the present invention, the maximum frequency at which the outdoor fan can operate is determined by combining the capacity of the operating indoor unit in the air conditioning system.
As an exemplary illustration, assume that the outdoor fan is operable at a maximum output frequency F for an outdoor unit having a capacity R of YkWMaximum ofIs the maximum frequency value XHz, the minimum output frequency FMinimum size ofIs the minimum frequency value MHz. Generally, the outdoor fan is adjusted to operate between the minimum frequency value MHz and the maximum frequency value XHz by detecting the difference value between the current target pressure and the actual pressure of the unit. According to the scheme, the current outdoor environment temperature, the rated capacity of the indoor unit in operation and whether the current system time is in the night time period or the noon break time period are detected in real time, and the maximum frequency value XHz of the outdoor fan is intelligently regulated and controlled.
Such as: outdoor unit with capacity of 18kW, maximum output frequency F of outdoor fan in refrigeration modeMaximum ofIs 44Hz, minimum output frequency FMinimum sizeIs 5 Hz.
The above parameters are exemplified parameters, and actual parameters can be different according to the refrigerating capacity of the unit, the number of outdoor fans, the running condition of the unit, and the like.
In some embodiments, the control unit 104, determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, includes: determining whether a rest mode of the air conditioning system is turned on. And determining whether the rest mode of the air conditioning system is started or not, wherein the determination result is that the rest mode is started or not.
As shown in fig. 3, the device for controlling the frequency of the outdoor fan of the air conditioning system according to the present invention, specifically a device for dynamically adjusting the maximum output frequency of the outdoor fan, further includes:
step 2, judging whether the rest mode is started: if yes, go to step 3. Otherwise, step 4 is executed.
The rest mode, namely the time adjustment mode, is a self-defined mode according to the function of unit, means in the time quantum that the user probably is in rest, restricts outdoor fan maximum frequency so that reduce the noise, improve user experience. Such as night time 22:30-7:00, noon break time 12:30-13:30, and other times customized by the user.
Accordingly, the control unit 104 determines the final maximum operation parameter of the outdoor unit in the current operation mode according to the determination result of whether at least one of the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system is turned on, in combination with the reference operation parameter, or in combination with the current outdoor ambient temperature in the current operation mode, including any one of the following rest mode-based determination situations:
the first is based on the determined situation of the rest mode: the control unit 104 is further configured to determine, if the rest mode is turned on, a difference between the reference operation parameter determined by the current outdoor environment temperature in the current operation mode and a set parameter threshold as a final maximum operation parameter of the outdoor unit in the current operation mode when the current time of the air conditioning system is in a preset rest period in the rest mode.
The second rest mode-based determination scenario: the control unit 104 is further configured to determine the reference operation parameter determined by the current outdoor environment temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode if the rest mode is turned on and the current time of the air conditioning system is not within a preset rest period in the rest mode.
As shown in fig. 3, the device for controlling the frequency of the outdoor fan of the air conditioning system according to the present invention, specifically a device for dynamically adjusting the maximum output frequency of the outdoor fan, further includes:
step 3, under the condition that the rest mode is started, determining the maximum output frequency F of the outdoor fan according to the rest modeMaximum ofA frequency threshold Δ XHz is set for the maximum frequency value XHz — for the first frequency value X3Hz, after which step 5 can be executed.
The air conditioning system outdoor unit is generally provided with a GPRS (general packet radio service) module, and the GPRS module can acquire accurate system time from a server side and provide time for the air conditioning system unit. When the outdoor unit of the air conditioning system receives GPRS service, if the outdoor unit is judged to be in the time period of night time, namely the first set time H1-the second set time H2, or judged to be in the time period of noon break time, namely the third set time H3-the fourth set time H4, the maximum frequency of the outdoor fan is reduced by a set frequency threshold value delta XHz on the basis of determining the maximum frequency value XHz of the outdoor fan according to the outdoor environment temperature.
The scheme of the invention can be provided with a plurality of rest modes which are optional, for example, a user can freely select N rest modes, different time periods and outdoor fan frequency adjustment values are selected, and N is a positive integer.
Optionally, the scheme of the invention can also open time period setting to the user. If there is no optional time period in the existing N rest modes, the user can enter the rest mode setting mode, and set the beginning and ending time of the night time period and the noon break time period of any one rest mode according to the self requirement.
Under the condition of combining the outdoor environment temperature and whether the rest mode is started or not, the maximum output frequency F of the outdoor fan is obtainedMaximum ofIs the first frequency value X3 Hz.
The first frequency value X3Hz is less than a first set frequency X1Hz, the first frequency value X3Hz is less than a second set frequency X2Hz, the first frequency value X3Hz is a maximum frequency value XHz — a set frequency threshold Δ XHz, the maximum frequency value XHz is the maximum output frequency of the outdoor fan finally obtained according to the outdoor ambient temperature THz, and the maximum frequency value XHz is derived from the first set frequency X1Hz or the second set frequency X2 Hz. The frequency threshold Δ XHz can be set according to the mode selected by the user, and is generally 3-8 Hz.
The third is based on the determined situation of the rest mode: the control unit 104 is specifically configured to determine the reference operation parameter determined by the current outdoor environment temperature in the current operation mode as a final maximum operation parameter of the outdoor unit in the current operation mode if the rest mode is not turned on.
As shown in fig. 3, the device for controlling the frequency of the outdoor fan of the air conditioning system according to the present invention, specifically a device for dynamically adjusting the maximum output frequency of the outdoor fan, further includes:
step 4, under the condition that the rest mode is not started, determining the maximum output frequency F of the outdoor fanMaximum ofAfter the first frequency value X3Hz is the maximum frequency value XHz, step 5 may be executed.
In some embodiments, the control unit 104, determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, further comprises: determining whether a capacity adjustment mode of the air conditioning system is turned on. And determining whether the capacity adjustment mode of the air conditioning system is started or not, wherein the capacity adjustment mode is started or not.
As shown in fig. 3, the device for controlling the frequency of the outdoor fan of the air conditioning system according to the present invention, specifically a device for dynamically adjusting the maximum output frequency of the outdoor fan, further includes:
and 5, judging whether the capacity adjustment mode is started or not: if yes, go to step 6. Otherwise, step 7 is performed.
And the capacity adjusting mode is a mode for adjusting the maximum output frequency of the outdoor fan according to the running state of the indoor unit.
Accordingly, the control unit 104 determines the final maximum operation parameter of the outdoor unit in the current operation mode according to the determination result of whether at least one of the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system is turned on, in combination with the reference operation parameter, or in combination with the current outdoor ambient temperature in the current operation mode, and further includes any one of the following determination situations based on the capacity adjustment mode:
the first is based on the determined situation of the capacity adjustment mode: the control unit 104 is further specifically configured to, if the capacity adjustment mode is turned on, determine, according to an area to which the capacity of the operating indoor unit belongs in a set capacity interval, a maximum allowable operation parameter of the area when the outdoor environment temperature in the current operation mode is less than or equal to the first set temperature in the current operation mode as a final maximum operation parameter of the outdoor unit in the current operation mode, when the outdoor environment temperature in the current operation mode is less than or equal to the first set temperature in the current operation mode.
As shown in fig. 3, the device for controlling the frequency of the outdoor fan of the air conditioning system according to the present invention, specifically a device for dynamically adjusting the maximum output frequency of the outdoor fan, further includes:
and 6, under the condition that the capacity adjusting mode is started, determining the maximum output frequency of the outdoor fan according to the outdoor environment temperature and the running capacity of the indoor unitRate FMaximum ofTo the second frequency value ZHz, step 8 may then be performed.
In a multi-split use occasion, one outdoor unit is generally matched with a plurality of indoor units, and a switch of any indoor unit can be freely set by a user. In addition, when the same indoor unit is started, the operation may be stopped because the indoor ambient temperature has reached the temperature requirement set by the user. Therefore, the starting condition of the indoor unit is not fixed, and the frequency requirements on the outdoor fan are different. In the scheme of the invention, the outdoor unit detects whether the indoor unit operates in real time, and dynamically adjusts the maximum operating frequency of the outdoor fan according to the rated capacity R of the operating indoor unit:
when the detected outdoor environment temperature T is less than or equal to the first set temperature T1:
and if the rated capacity R of the running indoor unit is less than or equal to the first set capacity R1, allowing the maximum output frequency of the outdoor fan to be a first corresponding frequency Z11.
And if the first set capacity R1 is less than or equal to the rated capacity R of the running indoor unit and less than or equal to the second set capacity R2, the maximum output frequency of the outdoor fan is allowed to be a second corresponding frequency Z12.
And if the second set capacity R2 is less than the rated capacity R of the running indoor unit and less than or equal to the third set capacity R3, the maximum output frequency of the outdoor fan is allowed to be a third corresponding frequency Z13.
And if the third set capacity R3 is less than the rated capacity R of the running indoor unit and less than or equal to the fourth set capacity R4, the maximum output frequency of the outdoor fan is allowed to be a fourth corresponding frequency Z14.
And if the fourth set capacity R4 is less than the rated capacity R of the running indoor unit and less than or equal to the fifth set capacity R5, the maximum output frequency of the outdoor fan is allowed to be a fifth corresponding frequency Z15.
And if the rated capacity R of the running indoor unit is larger than the fifth set capacity R5, the maximum output of the outdoor fan is allowed to be the sixth corresponding frequency Z16.
Wherein: the first set capacity r1 is less than the second set capacity r2 is less than the third set capacity r3 is less than the fourth set capacity r4 is less than the fifth set capacity r5, and the first corresponding frequency Z11 is less than or equal to the second corresponding frequency Z12 is less than or equal to the third corresponding frequency Z13 is less than or equal to the fourth corresponding frequency Z14 is less than or equal to the fifth corresponding frequency Z15 is less than or equal to the sixth corresponding frequency Z16.
A second capacity adjustment mode-based determination scenario: the control unit 104 is specifically further configured to, if the capacity adjustment mode is turned on, determine, according to an area to which the capacity of the operating indoor unit belongs in a set capacity interval when the outdoor environment temperature in the current operation mode is greater than the second set temperature in the current operation mode, a maximum allowable operation parameter of the area when the outdoor environment temperature in the current operation mode is greater than the second set temperature in the current operation mode as a final maximum operation parameter of the outdoor unit in the current operation mode.
As shown in fig. 3, the device for controlling the frequency of the outdoor fan of the air conditioning system according to the present invention, specifically a device for dynamically adjusting the maximum output frequency of the outdoor fan, further includes: in step 6, similarly, when the detected outdoor environment temperature T > the second set temperature T2:
if the rated capacity R of the running indoor unit is less than or equal to the first set capacity R1, the maximum output frequency of the outdoor fan is allowed to be a seventh corresponding frequency Z21.
And if the first set capacity R1 is less than the rated capacity R of the running indoor unit and less than or equal to the second set capacity R2, the maximum output frequency of the outdoor fan is allowed to be the eighth corresponding frequency Z22.
And if the second set capacity R2 is less than the rated capacity R of the running indoor unit and less than or equal to the third set capacity R3, the maximum output frequency of the outdoor fan is allowed to be a ninth corresponding frequency Z23.
And if the third set capacity R3 is less than the rated capacity R of the running indoor unit and less than or equal to the fourth set capacity R4, the maximum output frequency of the outdoor fan is allowed to be the tenth corresponding frequency Z24.
And if the fourth set capacity R4 is less than the rated capacity R of the running indoor unit and less than or equal to the fifth set capacity R5, the maximum output frequency of the outdoor fan is allowed to be the eleventh corresponding frequency Z25.
If the rated capacity R of the running indoor unit is larger than the fifth set capacity R5, the maximum output of the outdoor fan is allowed to be the twelfth corresponding frequency Z26.
Wherein: the first set capacity r1 < the second set capacity r2 < the third set capacity r3 < the fourth set capacity r4 < the fifth set capacity r5, and the seventh corresponding frequency Z21 ≦ the eighth corresponding frequency Z22 ≦ the ninth corresponding frequency Z23 ≦ the tenth corresponding frequency Z24 ≦ the eleventh corresponding frequency Z25 ≦ the twelfth corresponding frequency Z26.
In the above scheme, the capacity of the running indoor unit is divided into different ranges, when the sum of the capacities of the running indoor units is smaller, the maximum output frequency of the allowed outdoor fan is relatively smaller, and otherwise, the maximum output frequency is increased. Such as: the first set capacity r1 can take 5kW, the second set capacity r2 can take 8kW, the third set capacity r3 can take 10kW, the fourth set capacity r4 can take 11.2kW, and the fifth set capacity r5 can take 14 kW. The capacity of 16kW, 18kW, 20kW and the like can be continuously divided into sections, and the capacity can be adjusted according to the configuration condition of the indoor units and the capacity of the outdoor units. Maximum output frequency F of outdoor fanMaximum ofThe adjustment is generally between 30 Hz and 50Hz, and the adjustment is determined according to the division of the capacity section of the indoor unit, the size of an outer ring, the cooling capacity of the outdoor unit and the like according to the experimental condition.
The third scenario is based on the determination of the capacity adjustment mode: the control unit 104 is further specifically configured to determine, if the capacity adjustment mode is not turned on, a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether the rest mode of the air conditioning system is turned on, and in combination with the reference operation parameter.
As shown in fig. 3, the device for controlling the frequency of the outdoor fan of the air conditioning system according to the present invention, specifically a device for dynamically adjusting the maximum output frequency of the outdoor fan, further includes: step 7, under the condition that the capacity adjustment mode is not started, determining the maximum output frequency F of the outdoor fanMaximum ofThe final frequency value X0Hz is the first frequency value X3 Hz.
In some embodiments, the control unit 104, determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, further comprises: determining whether a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system are on. The determination result of whether the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are on is as follows: the method comprises the following steps that a rest mode of the air conditioning system and a capacity adjusting mode of the air conditioning system are both started, or the rest mode of the air conditioning system is started and the capacity adjusting mode of the air conditioning system is not started, or the rest mode of the air conditioning system is not started and the capacity adjusting mode of the air conditioning system is started, or the rest mode of the air conditioning system and the capacity adjusting mode of the air conditioning system are not started.
Accordingly, the control unit 104 determines the final maximum operation parameter of the outdoor unit in the current operation mode according to the determination result of whether at least one of the rest mode and the capacity adjustment mode of the air conditioning system is on, and by combining the reference operation parameter or the current outdoor environment temperature in the current operation mode, and further includes any one of the following comprehensive determination situations:
the first comprehensive determination scenario: the control unit 104 is further specifically configured to select the final maximum operating parameter of the outdoor unit in the current operating mode determined when the rest mode is turned on and the final maximum operating parameter of the outdoor unit in the current operating mode determined when the capacity adjustment mode is turned on, if both the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are turned on.
As shown in fig. 3, the device for controlling the frequency of the outdoor fan of the air conditioning system according to the present invention, specifically a device for dynamically adjusting the maximum output frequency of the outdoor fan, further includes: step 8, under the condition that the capacity adjustment mode is started, determining the maximum output frequency F of the outdoor fanMaximum ofThe smaller of the first frequency value X3Hz and the second frequency value ZHz is taken as the final frequency value X0 Hz.
A second comprehensive determination scenario: the control unit 104 is specifically configured to select a final maximum operation parameter of the outdoor unit in the current operation mode determined when the rest mode is turned on, if the rest mode of the air conditioning system is turned on and the capacity adjustment mode of the air conditioning system is not turned on.
The third scenario of comprehensive determination: the control unit 104 is specifically configured to select a final maximum operation parameter of the outdoor unit in the current operation mode determined when the capacity adjustment mode is turned on, if the rest mode of the air conditioning system is not turned on and the capacity adjustment mode of the air conditioning system is turned on, and the final maximum operation parameter of the outdoor unit in the current operation mode is determined when the capacity adjustment mode is turned on.
A fourth integrated determination scenario: the control unit 104 is specifically configured to select a final maximum operation parameter of the outdoor unit in the current operation mode, which is determined according to the outdoor environment temperature in the current operation mode, if neither the rest mode of the air conditioning system nor the capacity adjustment mode of the air conditioning system is turned on.
Finally, the maximum allowable output frequency F of the outdoor fanMaximum ofThe final frequency value X0Hz may be a second frequency value ZHz of the outdoor air determined according to the capacity R of the operating indoor unit in the capacity adjustment mode. And the second frequency value ZHz of the outdoor air is one of a first corresponding frequency Z11-a sixth corresponding frequency Z16, a seventh corresponding frequency Z21-a twelfth corresponding frequency Z26 which are determined according to the outdoor environment temperature T and the capacity R of the running indoor unit. The maximum frequency value X0Hz of the allowed outdoor fan may also be determined according to the outdoor environment temperature T and the first frequency value X3Hz determined in the rest mode. If the second frequency value ZHz is smaller than the first frequency value X3Hz, the first frequency value X3Hz is selected, that is, the final frequency value X0Hz of the outdoor fan is equal to the first frequency value X3 Hz. Otherwise, selecting a second frequency value ZHz, and obtaining a final frequency value X0Hz as the second frequency value ZHz by the outdoor fan.
Optionally, the user may also select whether to enable the determination of the maximum output frequency F of the outdoor fan according to the rest modeMaximum ofDetermining according to the capacity adjustment modeMaximum output frequency F of outdoor fanMaximum ofAnd the like. If the rest mode is not started, the maximum output frequency F of the outdoor fan is finally obtainedMaximum ofThe lower of the maximum frequency value XHz determined from the outdoor ambient temperature and the second frequency value ZHz determined from the capacity of the operating indoor unit. If the capacity adjusting mode is not started, the maximum output frequency F of the outdoor fan is finally obtainedMaximum ofIs a first frequency value X3Hz determined based on the outdoor ambient temperature and the capacity of the operating indoor unit. If the rest mode and the capacity adjusting mode are not started, the maximum output frequency F of the outdoor fanMaximum ofIs the maximum frequency value XHz determined from the outdoor ambient temperature.
According to the scheme of the invention, the maximum frequency of the outdoor fan which can be operated is dynamically adjusted according to the outdoor environment temperature, the rated capacity of the running indoor unit and whether the current system time is in the night time period or the noon break time period, so that the purposes of energy conservation and noise reduction are achieved.
Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method, reference may be made to the related descriptions in the embodiments without being detailed in the description of this embodiment, which is not described herein again.
By adopting the technical scheme of the invention, the maximum frequency of the outdoor fan which can be operated is dynamically adjusted according to the outdoor environment temperature, the rated capacity of the operation indoor unit and the current system time by acquiring the outdoor environment temperature of the air conditioning system, the rated capacity of the operation indoor unit in more than one indoor unit and the current system time, so that the noise can be reduced, and the energy conservation is facilitated.
According to an embodiment of the present invention, there is also provided an air conditioning system corresponding to a control device of the air conditioning system. The air conditioning system may include: the control device of the air conditioning system described above.
Since the processing and functions of the air conditioning system of this embodiment are basically corresponding to the embodiments, principles and examples of the foregoing devices, reference may be made to the related descriptions in the foregoing embodiments without being detailed in the description of this embodiment.
By adopting the technical scheme of the invention, the maximum operable frequency of the outdoor fan is dynamically adjusted according to the outdoor environment temperature, the rated capacity of the operating indoor unit and the current system time by acquiring the outdoor environment temperature of the air conditioning system, the rated capacity of the operating indoor unit in more than one indoor unit and the current system time, so that the noise can be reduced and the use comfort of a user can be improved.
According to an embodiment of the present invention, there is also provided a storage medium corresponding to a control method of an air conditioning system, the storage medium including a stored program, wherein when the program is executed, a device in which the storage medium is located is controlled to execute the control method of the air conditioning system described above.
Since the processing and functions implemented by the storage medium of this embodiment substantially correspond to the embodiments, principles, and examples of the foregoing method, reference may be made to the related descriptions in the foregoing embodiments without being detailed in the description of this embodiment.
By adopting the technical scheme of the invention, the maximum operable frequency of the outdoor fan is dynamically adjusted according to the outdoor environment temperature, the rated capacity of the operating indoor unit and the current system time by acquiring the outdoor environment temperature of the air conditioning system, the rated capacity of the operating indoor unit in more than one indoor unit and the current system time, so that the comfort of use of a user can be improved, and the energy conservation is facilitated.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (12)
1. A control method of an air conditioning system, characterized in that the air conditioning system includes: an outdoor unit and an indoor unit; the outdoor unit includes: an outdoor fan; the number of the indoor units is more than one; among the more than one indoor units, the indoor unit participating in the operation of the air conditioning system in the current operation mode is marked as an operation indoor unit; the control method of the air conditioning system comprises the following steps:
acquiring the current outdoor environment temperature of the air conditioning system in the current operation mode of the air conditioning system;
determining the current maximum operation parameter of the outdoor fan in the current operation mode according to the current outdoor environment temperature in the current operation mode, and recording the current maximum operation parameter as a reference operation parameter;
determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on; the rest mode is a mode for determining the actual maximum operation parameter of the outdoor fan by combining a preset rest time period; the capacity adjustment mode is a mode for determining the actual maximum operation parameter of the outdoor fan by combining the capacity of the operation indoor unit;
determining a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, and by combining the reference operation parameter or the current outdoor environment temperature in the current operation mode, wherein the final maximum operation parameter is used as an actual maximum operation parameter of the outdoor unit in the current operation mode;
and controlling the outdoor fan to operate according to the actual maximum operation parameter in the current operation mode.
2. The method of claim 1, wherein determining the current maximum operating parameter of the outdoor fan in the current operating mode according to the current outdoor ambient temperature in the current operating mode comprises:
if the current outdoor environment temperature in the current operation mode is less than or equal to a first temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode as a first set operation parameter;
if the current outdoor environment temperature in the current operation mode is greater than a second temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode as a second set operation parameter; the first temperature threshold in the current operating mode is different from the second temperature threshold in the current operating mode;
if the current outdoor environment temperature in the current operation mode is greater than the first temperature threshold in the current operation mode and is less than or equal to the second temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode, and maintaining the current maximum operation parameter in the current operation mode determined last time.
3. The control method of an air conditioning system according to claim 1 or 2, wherein determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on includes: determining whether a rest mode of the air conditioning system is turned on; the determination result of whether the rest mode of the air conditioning system is started is that the rest mode is started or the rest mode is not started;
determining a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, and by combining the reference operation parameter or the current outdoor environment temperature in the current operation mode, including:
if the rest mode is started, determining a difference value between the reference operation parameter determined by the current outdoor environment temperature in the current operation mode and a set parameter threshold value as a final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the current time of the air conditioning system is in a preset rest period in the rest mode;
if the rest mode is started, determining the reference operation parameter determined by the current outdoor environment temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the current time of the air conditioning system is not in a preset rest period in the rest mode;
and if the rest mode is not started, determining the reference operation parameter determined by the current outdoor environment temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode.
4. The control method of an air conditioning system according to any one of claims 1 to 3, wherein determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on further comprises: determining whether a capacity adjustment mode of the air conditioning system is turned on; determining whether a capacity adjustment mode of the air conditioning system is started or not as a result of determining whether the capacity adjustment mode is started or not;
determining a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, in combination with the reference operation parameter, or in combination with a current outdoor environment temperature in the current operation mode, and further comprising:
if the capacity adjustment mode is started, determining the maximum operation parameter allowed by the area under the condition that the outdoor environment temperature in the current operation mode is less than or equal to the first set temperature in the current operation mode according to the area of the capacity of the operation indoor unit in a set capacity interval under the condition that the outdoor environment temperature in the current operation mode is less than or equal to the first set temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode;
if the capacity adjustment mode is started, determining the maximum allowable operation parameter of the area under the condition that the outdoor environment temperature of the area under the current operation mode is higher than the second set temperature under the current operation mode as the final maximum operation parameter of the outdoor unit under the current operation mode according to the area of the capacity of the operation indoor unit in a set capacity interval under the condition that the outdoor environment temperature of the area under the current operation mode is higher than the second set temperature under the current operation mode;
and if the capacity adjustment mode is not started, determining the final maximum operation parameter of the outdoor unit in the current operation mode according to the determination result of whether the rest mode of the air conditioning system is started or not and by combining the reference operation parameter.
5. The control method of an air conditioning system according to any one of claims 1 to 4, wherein determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on further comprises: determining whether a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system are on; the determination result of whether the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are on is as follows: the method comprises the following steps that a rest mode of the air conditioning system and a capacity adjusting mode of the air conditioning system are both started, or the rest mode of the air conditioning system is started and the capacity adjusting mode of the air conditioning system is not started, or the rest mode of the air conditioning system is not started and the capacity adjusting mode of the air conditioning system is started, or the rest mode of the air conditioning system and the capacity adjusting mode of the air conditioning system are not started;
determining a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is turned on, in combination with the reference operation parameter, or in combination with a current outdoor ambient temperature in the current operation mode, and further comprising:
if the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are both started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the rest mode is started, and selecting the smaller one of the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the capacity adjustment mode is started and the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the capacity adjustment mode is started;
if the rest mode of the air conditioning system is started and the capacity adjustment mode of the air conditioning system is not started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the rest mode is started;
if the rest mode of the air conditioning system is not started and the capacity adjustment mode of the air conditioning system is started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the capacity adjustment mode is started;
and if the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are not started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode, which is determined according to the outdoor environment temperature in the current operation mode, of the outdoor fan in the current operation mode.
6. A control device of an air conditioning system, characterized in that the air conditioning system includes: an outdoor unit and an indoor unit; the outdoor unit includes: an outdoor fan; the number of the indoor units is more than one; among the more than one indoor units, the indoor unit participating in the operation of the air conditioning system in the current operation mode is marked as an operation indoor unit; the control device of the air conditioning system comprises:
an acquisition unit configured to acquire a current outdoor ambient temperature of the air conditioning system in a current operation mode of the air conditioning system;
the control unit is configured to determine a current maximum operation parameter of the outdoor fan in the current operation mode according to the current outdoor environment temperature in the current operation mode, and record the current maximum operation parameter as a reference operation parameter;
the control unit further configured to determine whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on; the rest mode is a mode for determining the actual maximum operation parameter of the outdoor fan by combining a preset rest time period; the capacity adjustment mode is a mode for determining the actual maximum operation parameter of the outdoor fan by combining the capacity of the operation indoor unit;
the control unit is further configured to determine a final maximum operation parameter of the outdoor unit in the current operation mode as an actual maximum operation parameter of the outdoor unit in the current operation mode, according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, in combination with the reference operation parameter, or in combination with a current outdoor environment temperature in the current operation mode;
the control unit is further configured to control the outdoor fan to operate according to the actual maximum operation parameter in the current operation mode.
7. The control device of claim 6, wherein the control unit determines the current maximum operating parameter of the outdoor fan in the current operating mode according to the current outdoor ambient temperature in the current operating mode, and comprises:
if the current outdoor environment temperature in the current operation mode is less than or equal to a first temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode as a first set operation parameter;
if the current outdoor environment temperature in the current operation mode is greater than a second temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode as a second set operation parameter; the first temperature threshold in the current operating mode is different from the second temperature threshold in the current operating mode;
if the current outdoor environment temperature in the current operation mode is greater than the first temperature threshold in the current operation mode and is less than or equal to the second temperature threshold in the current operation mode, determining the current maximum operation parameter in the current operation mode, and maintaining the current maximum operation parameter in the current operation mode determined last time.
8. The control device of an air conditioning system as claimed in claim 6 or 7, wherein the control unit determining whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on includes: determining whether a rest mode of the air conditioning system is turned on; the determination result of whether the rest mode of the air conditioning system is started is that the rest mode is started or the rest mode is not started;
the determining, by the control unit, a final maximum operating parameter of the outdoor unit in the current operating mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, and by combining the reference operating parameter or the current outdoor ambient temperature in the current operating mode, includes:
if the rest mode is started, determining a difference value between the reference operation parameter determined by the current outdoor environment temperature in the current operation mode and a set parameter threshold value as a final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the current time of the air conditioning system is in a preset rest period in the rest mode;
if the rest mode is started, determining the reference operation parameter determined by the current outdoor environment temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the current time of the air conditioning system is not in a preset rest period in the rest mode;
and if the rest mode is not started, determining the reference operation parameter determined by the current outdoor environment temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode.
9. The control device of an air conditioning system according to any one of claims 6 to 8, wherein the control unit determines whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, further comprising: determining whether a capacity adjustment mode of the air conditioning system is turned on; determining whether a capacity adjustment mode of the air conditioning system is started or not as a result of determining whether the capacity adjustment mode is started or not;
the control unit determines a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, and in combination with the reference operation parameter, or in combination with a current outdoor environment temperature in the current operation mode, and further includes:
if the capacity adjustment mode is started, determining the maximum operation parameter allowed by the area under the condition that the outdoor environment temperature in the current operation mode is less than or equal to the first set temperature in the current operation mode according to the area of the capacity of the operation indoor unit in a set capacity interval under the condition that the outdoor environment temperature in the current operation mode is less than or equal to the first set temperature in the current operation mode as the final maximum operation parameter of the outdoor unit in the current operation mode;
if the capacity adjustment mode is started, determining the maximum allowable operation parameter of the area under the condition that the outdoor environment temperature of the area under the current operation mode is higher than the second set temperature under the current operation mode as the final maximum operation parameter of the outdoor unit under the current operation mode according to the area of the capacity of the operation indoor unit in a set capacity interval under the condition that the outdoor environment temperature of the area under the current operation mode is higher than the second set temperature under the current operation mode;
and if the capacity adjustment mode is not started, determining the final maximum operation parameter of the outdoor unit in the current operation mode according to the determination result of whether the rest mode of the air conditioning system is started or not and by combining the reference operation parameter.
10. The control device of an air conditioning system according to any one of claims 6 to 9, wherein the control unit determines whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, further comprising: determining whether a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system are on; the determination result of whether the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are on is as follows: the method comprises the following steps that a rest mode of the air conditioning system and a capacity adjusting mode of the air conditioning system are both started, or the rest mode of the air conditioning system is started and the capacity adjusting mode of the air conditioning system is not started, or the rest mode of the air conditioning system is not started and the capacity adjusting mode of the air conditioning system is started, or the rest mode of the air conditioning system and the capacity adjusting mode of the air conditioning system are not started;
the control unit determines a final maximum operation parameter of the outdoor unit in the current operation mode according to a determination result of whether at least one of a rest mode of the air conditioning system and a capacity adjustment mode of the air conditioning system is on, and in combination with the reference operation parameter, or in combination with a current outdoor environment temperature in the current operation mode, and further includes:
if the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are both started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode under the condition that the rest mode is started, and selecting the smaller one of the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the capacity adjustment mode is started and the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the capacity adjustment mode is started;
if the rest mode of the air conditioning system is started and the capacity adjustment mode of the air conditioning system is not started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the rest mode is started;
if the rest mode of the air conditioning system is not started and the capacity adjustment mode of the air conditioning system is started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode determined under the condition that the capacity adjustment mode is started;
and if the rest mode of the air conditioning system and the capacity adjustment mode of the air conditioning system are not started, selecting the final maximum operation parameter of the outdoor unit in the current operation mode, which is determined according to the outdoor environment temperature in the current operation mode, of the outdoor fan in the current operation mode.
11. An air conditioning system, comprising: the control device of an air conditioning system as claimed in any one of claims 6 to 10.
12. A storage medium characterized by comprising a stored program, wherein an apparatus in which the storage medium is located is controlled to execute the control method of the air conditioning system according to any one of claims 1 to 5 when the program is executed.
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