WO2022134906A1 - 空调多联机及其化霜控制方法、装置和存储介质 - Google Patents

空调多联机及其化霜控制方法、装置和存储介质 Download PDF

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Publication number
WO2022134906A1
WO2022134906A1 PCT/CN2021/129738 CN2021129738W WO2022134906A1 WO 2022134906 A1 WO2022134906 A1 WO 2022134906A1 CN 2021129738 W CN2021129738 W CN 2021129738W WO 2022134906 A1 WO2022134906 A1 WO 2022134906A1
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Prior art keywords
defrosting
air conditioner
capacity
heating
outdoor
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PCT/CN2021/129738
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English (en)
French (fr)
Inventor
武连发
金孟孟
申传涛
焦华超
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珠海格力电器股份有限公司
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Publication of WO2022134906A1 publication Critical patent/WO2022134906A1/zh

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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
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air

Definitions

  • the present disclosure relates to the field of control, and in particular, to a multi-line air conditioner and its defrosting control method, device and storage medium.
  • the multi-line can be operated in a modularized manner, but in terms of defrosting, discontinuous heating and defrosting are generally performed, that is, all external machine modules are defrosted together.
  • This defrosting mode has simple control and short defrosting cycle, but it is often "frost-free defrosting".
  • continuous heating and defrosting can be performed.
  • Some outdoor units continue to maintain the heating mode to ensure the comfort of the indoor unit when the heating is turned on.
  • Some outdoor units are turned to the cooling mode for defrosting. After defrosting, they alternate with each other. Defrost.
  • This continuous heating and defrosting method can ensure the indoor comfort of turning on the heating internal unit, and can defrost at the same time.
  • a defrosting control method for an air conditioner multi-connection which includes: when the air conditioner multi-connector is in heating operation, judging whether the air conditioner multi-connection meets the defrosting condition; when it is judged that the defrosting condition is satisfied, according to The outdoor ambient temperature controls the multi-line air conditioner to enter a discontinuous heating defrosting mode or a continuous heating defrosting mode.
  • controlling the multi-line air conditioner to enter the discontinuous heating defrosting mode or the continuous heating defrosting mode according to the outdoor ambient temperature includes: obtaining the sum of the rated capacities of the indoor units that are heating and the sum of the rated capacities of all outdoor units. The capacity ratio of the sum of the rated capacities; according to the outdoor ambient temperature and the capacity ratio, the multi-line air conditioner is controlled to enter the discontinuous heating defrosting mode or the continuous heating defrosting mode.
  • controlling the multi-line air conditioner to enter a discontinuous heating defrosting mode or a continuous heating defrosting mode according to the outdoor ambient temperature and the capacity ratio includes: setting a preset temperature according to the outdoor ambient temperature The temperature interval in the multiple temperature intervals determines the corresponding capacity correction coefficient; according to the capacity correction coefficient and the first N-1 outdoor units sorted according to the rated capacity from small to large among the N outdoor units of the multi-connected air conditioners The sum of the rated capacity of the air conditioner determines the corresponding defrost mode judgment coefficient, where N>1, and N is a positive integer; according to whether the capacity ratio is smaller than the defrost mode judgment coefficient, the multi-line air conditioner is controlled to enter continuous heating Defrost mode or non-continuous heating defrost mode; wherein, if the capacity ratio is less than the defrost mode judgment coefficient, control the multi-line air conditioner to enter the continuous heating defrost mode, if the capacity ratio is greater than or equal to The defrosting mode judgment coefficient is used to control
  • different temperature intervals correspond to different capacity correction factors.
  • the corresponding defrosting mode determination coefficient is equal to the capacity correction coefficient and the first N-1 outdoor units sorted according to the rated capacity from small to large among the N outdoor units of the multi-connected air conditioners. The product of the sum of the rated capacities.
  • determining whether the multi-line air conditioner satisfies the defrosting condition includes: when judging that at least one outdoor unit of the multi-line air conditioner satisfies the defrosting condition, determining that the multi-line air conditioner satisfies the defrosting condition.
  • an air conditioner multi-connection defrosting control device comprising: a judgment unit for judging whether the air conditioner multi-connection satisfies defrosting conditions when the air conditioner multi-connection is in heating operation; a control unit, When the judging unit judges that the defrosting condition is satisfied, the multi-line air conditioner is controlled to enter the discontinuous heating defrosting mode or the continuous heating defrosting mode according to the outdoor ambient temperature.
  • control unit is configured to obtain a capacity ratio of the sum of the rated capacities of the indoor units being heated to the sum of the rated capacities of all outdoor units; and to control the capacity ratio according to the outdoor ambient temperature and the capacity ratio.
  • the multi-line air conditioner enters the discontinuous heating and defrosting mode or the continuous heating and defrosting mode.
  • the control unit includes: a first determination subunit, configured to determine a corresponding capacity correction coefficient according to a temperature interval in which the outdoor ambient temperature is located in a plurality of preset temperature intervals; a second determination subunit The unit is configured to determine the corresponding defrosting mode judgment coefficient according to the capacity correction coefficient and the sum of the rated capacities of the first N-1 outdoor units sorted according to the rated capacity from small to large among the N outdoor units of the multi-connected air conditioners , where N>1, and N is a positive integer; the control subunit is used to control the multi-line air conditioner to enter the continuous heating defrosting mode or the discontinuous defrosting mode according to whether the capacity ratio is smaller than the defrosting mode judgment coefficient Thermal defrosting mode; wherein, the control sub-unit is configured to control the multi-line air conditioner to enter the continuous heating defrosting mode if the capacity ratio is less than the defrosting mode judgment coefficient, and if the capacity ratio is greater than or equal to The defrosting mode judgment coefficient is used to control the multi
  • different temperature intervals correspond to different capacity correction factors.
  • the corresponding defrosting mode determination coefficient is equal to the capacity correction coefficient and the first N-1 outdoor units sorted according to the rated capacity from small to large among the N outdoor units of the multi-connected air conditioners. The product of the sum of the rated capacities.
  • the judging unit is configured to determine that the multi-line air conditioner satisfies the defrosting condition when it is determined that at least one outdoor unit of the multi-line air conditioner satisfies the defrosting condition.
  • Yet another aspect of the present disclosure provides a storage medium on which a computer program is stored, and when the program is executed by a processor, implements the steps of any one of the aforementioned methods.
  • an air conditioner multi-connection including a processor, a memory, and a computer program stored in the memory and executed on the processor, and the processor implements any one of the foregoing methods when the processor executes the program. step.
  • Yet another aspect of the present disclosure provides a multi-line air conditioner, including any one of the above-mentioned multi-line defrost control devices for an air conditioner.
  • FIG. 1 is a method schematic diagram of an embodiment of an air conditioner multi-line defrosting control method provided by the present disclosure
  • FIG. 2 is a schematic flowchart of a specific embodiment of the step of controlling the multi-line air conditioner to enter a discontinuous heating defrosting mode or a continuous heating defrosting mode according to the outdoor ambient temperature and the capacity ratio;
  • FIG. 3 is a method schematic diagram of a specific embodiment of the multi-line defrosting control method for an air conditioner provided by the present disclosure
  • FIG. 4 is a structural block diagram of an embodiment of an air conditioner multi-line defrost control device provided by the present disclosure
  • FIG. 5 is a structural block diagram of a specific implementation manner of a control unit according to an embodiment of the present disclosure.
  • the inventors of the present disclosure found that the multi-connection air conditioners in the related art have unreasonable conditions for entering the continuous heating and defrosting mode, and in many cases, the continuous heating and defrosting mode is performed under the premise that the temperature of the outlet air from the internal unit cannot be guaranteed when the heating is turned on. frost, resulting in lower outlet air temperature, causing strong indoor discomfort.
  • the embodiments of the present disclosure provide a multi-connection air conditioner and a defrosting control method, device, and storage medium thereof, so as to solve the problem as much as possible that when the multi-connection system performs continuous heating and defrosting in the related art, the indoor unit cannot be guaranteed to be heated and turned on. Air temperature problem.
  • the present disclosure provides a multi-line defrosting control method for an air conditioner.
  • the method of the present disclosure can be used for the defrost control of the modular air conditioner multi-line.
  • FIG. 1 is a method schematic diagram of an embodiment of a multi-line defrosting control method for an air conditioner provided by the present disclosure. As shown in FIG. 1 , according to an embodiment of the present disclosure, the control method includes at least step S110 and step S120.
  • Step S110 when the multi-line air conditioner is in heating operation, determine whether the multi-line air conditioner satisfies the defrosting condition.
  • the defrosting condition is satisfied, and the defrosting is entered.
  • it is determined that at least one outdoor unit of the multi-line air conditioner satisfies the defrosting condition it is determined that the multi-line air conditioner satisfies the defrosting condition.
  • the detection accuracy of the defrosting temperature sensor built in the outdoor unit may affect the judgment of whether the defrosting conditions are met. For example, the temperature detected by the defrost temperature sensor bulb of some outdoor units has reached the defrost entry condition, and the temperature detected by the defrost temperature sensor bulb of some outdoor units may not be under the defrost condition. In this case, as long as the temperature detected by any defrosting temperature sensor module in the system reaches the defrosting condition, the entire air conditioner multi-line system will enter the defrosting process.
  • Step S120 when it is determined that the defrosting condition is satisfied, control the multi-line of the air conditioner to enter the discontinuous heating defrosting mode or the continuous heating defrosting mode according to the outdoor ambient temperature.
  • the step S120 includes: obtaining a capacity ratio of the sum of the rated capacities of the indoor units that are heating to the sum of the rated capacities of all outdoor units; Online to enter discontinuous heating defrost mode or continuous heating defrost mode.
  • the indoor unit that is heating is an indoor unit with a heating capacity requirement greater than 0.
  • the capacity ratio of the sum of the rated capacities of the indoor units that are heating to the sum of the rated capacities of all the outdoor units Qn the sum of the rated capacities of the indoor units whose heating capacity demand is greater than 0/the sum of the rated capacities of all the outdoor units.
  • FIG. 2 is a schematic flowchart of a specific embodiment of the steps of controlling the multi-line air conditioner to enter a discontinuous heating defrosting mode or a continuous heating defrosting mode according to the outdoor ambient temperature and the capacity ratio.
  • step S120 includes step S121, step S122 and step S123.
  • Step S121 Determine a corresponding capacity correction coefficient according to a temperature interval in which the outdoor ambient temperature is located in two or more preset temperature intervals.
  • different temperature ranges correspond to different capacity correction coefficients. That is, by determining the temperature range in which the outdoor ambient temperature T is located in more than two preset temperature ranges, the corresponding capacity correction coefficient m can be determined, where m ⁇ 1.
  • the outdoor ambient temperature is divided into three temperature ranges. When t1 ⁇ Toutdoor , the corresponding capacity correction coefficient is m1, when t2 ⁇ Toutdoor ⁇ t1 , the corresponding capacity correction coefficient is m2, and when Toutdoor ⁇ t2 , the corresponding capacity correction coefficient is m3, where t1>t2.
  • Different capacity correction coefficients corresponding to different temperature ranges can be obtained through experiments.
  • the value range of t1 is -5 ⁇ t1 ⁇ 15
  • the value range of t2 is -15 ⁇ t2 ⁇ 0
  • the value range of the capacity correction coefficient m is 0.1 ⁇ m ⁇ 1.5 (for example, m is 0.8). Among them, m1>m2>m3.
  • Step S122 Determine a corresponding defrost mode judgment coefficient according to the capacity correction coefficient and the sum of the rated capacities of the first N-1 outdoor units sorted in ascending order of rated capacity among the N outdoor units of the multi-connected air conditioners.
  • N >1, and N is a positive integer.
  • N is the total number of outdoor units of the multi-connected air conditioner.
  • the first N-1 outdoor units in the N outdoor units of the multi-connection air conditioners sorted according to the rated capacity from small to large, that is, the N-1 outdoor units with the smallest rated capacity among the N outdoor units of the air conditioner multi-connection.
  • the sum of the rated capacity determines the corresponding defrost mode judgment coefficient.
  • the corresponding defrosting mode judgment coefficient is equal to the sum of the capacity correction coefficient and the rated capacity of the first N-1 outdoor units sorted according to the rated capacity from small to large among the N outdoor units of the multi-connected air conditioners. product.
  • Table 1 shows the defrost mode judgment coefficient corresponding to the outdoor ambient temperature under different total numbers of outdoor units.
  • the total number of modules is the total number of outdoor units connected to multiple air conditioners.
  • the defrost mode judgment coefficient is a designed capacity ratio, such as 25%, 50%, ...
  • the calculation principle of the defrost mode judgment coefficient is based on the principle of "minimum outdoor unit capacity", because in the process of rotating defrost (one outdoor unit defrosts, other outdoor units keep heating operation), "large-capacity outdoor units continue to heat.
  • the defrost mode judgment coefficient is used to judge whether to execute the continuous defrost mode, and the continuous heating defrost can be executed under the condition that the outlet air temperature of the indoor unit can be guaranteed.
  • the judgment value is determined according to the one with the smaller capacity (the one with the smaller capacity can provide less heat exchange).
  • the other two need to ensure heating, so the capacity of the two units and the capacity of the smallest outdoor unit is used to determine the defrosting mode judgment coefficient. Therefore, the above method of using different capacity correction values according to different outdoor ambient temperatures and obtaining different defrost mode judgment coefficients according to the minimum outdoor unit capacity can ensure that the outlet air temperature of the indoor unit meets the comfort requirements.
  • Step S123 according to whether the capacity ratio is smaller than the defrosting mode determination coefficient, control the multi-line air conditioner to enter the continuous heating defrosting mode or the discontinuous heating defrosting mode.
  • the non-continuous heating and defrosting includes: defrosting all outdoor units of the multi-line air conditioner together, and the continuous heating and defrosting includes: defrosting each outdoor unit of the multi-line air conditioner in turn until all The outdoor unit is defrosted, that is, one outdoor unit is defrosted, and the other outdoor units keep heating operation.
  • the multi-line air conditioner includes three outdoor units A, B, and C, then A first (transfer cooling mode) enters the defrosting operation, and B and C keep heating operation; after the defrosting of A, B enters the defrosting, and A and C Keep heating operation; after B defrosting, C enters defrosting, A and B keep heating operation.
  • the unit will run normally for heating.
  • control the multi-line air conditioner For example, if the capacity ratio is less than the defrost mode judgment coefficient, control the multi-line air conditioner to enter the continuous heating defrost mode; if the capacity ratio is not less than the defrost mode judgment coefficient, control the air conditioner The multi-line air conditioner enters the discontinuous heating and defrosting mode.
  • the capacity ratio of the sum of the rated capacity of the indoor unit being heated and the sum of the rated capacity of all the outdoor units is obtained as Qn, when t1 ⁇ T outdoor , the corresponding defrost mode judgment coefficient is K1, if Qn ⁇ K1, then Control the multi-line of the air conditioner to enter the continuous heating and defrosting mode to perform continuous heating and defrosting; otherwise, control the multi-line of the air conditioner to enter the discontinuous heating and defrosting mode to perform discontinuous heating and defrosting; when t2 ⁇ When Toutdoor ⁇ t1 , the corresponding defrosting mode judgment coefficient is K2.
  • control the air conditioner to enter the continuous heating defrosting mode to perform continuous heating and defrosting, otherwise, control the air conditioner Multi-connection enters discontinuous heating and defrosting mode, and executes discontinuous heating and defrosting; when T outdoor ⁇ t2, the corresponding defrosting mode judgment coefficient is K3, and if Qn ⁇ K3, the air conditioner is controlled to enter multi-connection mode.
  • Continuous heating and defrosting mode to perform continuous heating and defrosting; otherwise, control the multi-line air conditioner to enter a discontinuous heating and defrosting mode to perform discontinuous heating and defrosting.
  • FIG. 3 is a method schematic diagram of a specific embodiment of the multi-line defrosting control method for an air conditioner provided by the present disclosure.
  • the multi-line air conditioner is turned on and running, it is judged whether the defrosting conditions are met. When it is judged that the defrosting conditions are not met, the normal operation is continued. When it is judged that the defrosting conditions are met, it is further judged to enter the continuous heating and defrosting. Or discontinuous heating and defrosting.
  • the outdoor ambient temperature is greater than the t1 temperature value, use m1 to calculate the K1 value, and make a judgment.
  • the unit When the capacity ratio of the total capacity of the indoor unit with the heating turned on and the total capacity of all outdoor units is Qn ⁇ K1 value, enter the continuous heating And ensure its outlet air temperature, if the ratio of the total capacity of the indoor unit with heating on to the total capacity of all outdoor units is Qn ⁇ K1 value, because the outlet air temperature cannot be guaranteed, the unit does not enter the continuous heating and defrosting process, according to the normal Defrosting (non-continuous heating and defrosting) is performed; when the outdoor ambient temperature is between t2 and t1, use m2 to calculate the K2 value, and judge, when the total capacity of the indoor units with heating is turned on and the total of all outdoor units.
  • the capacity ratio of capacity Qn ⁇ K2 value When the capacity ratio of capacity Qn ⁇ K2 value, it enters continuous heating and guarantees its outlet air temperature. Wind temperature, the unit does not enter the continuous heating and defrosting, and executes according to the ordinary defrosting (non-continuous heating and defrosting).
  • the outdoor temperature is less than t2, use m3 to calculate the K3 value, and judge, when the heating of the indoor unit is turned on.
  • the capacity ratio of the total capacity to the total capacity of all outdoor units is Qn ⁇ K3 value, it will enter continuous heating and ensure its outlet air temperature.
  • ⁇ K3 value because the outlet air temperature cannot be guaranteed, the unit does not enter continuous heating and defrosting, and it is performed according to ordinary defrosting (non-continuous heating and defrosting).
  • the higher capacity correction coefficient m1 is used to calculate the defrosting mode judgment coefficient K1, and to judge, when the heating is turned on.
  • the capacity ratio of the total capacity of the indoor units to the total capacity of all outdoor units is Qn ⁇ K1 value, it indicates that the capacity of these heating-on indoor units is not large, and they can enter continuous heating and ensure their outlet air temperature.
  • the minimum outdoor unit can ensure that the outlet air temperature of 3 indoor units reaches 38°C or more, but at -20°C, it may only be possible to Ensure that the outlet air temperature of 2 or even 1 indoor unit reaches above 38°C. Using such a judgment method, the continuous heating effect of the unit can be guaranteed.
  • the outdoor temperature is less than t2, it can be understood that the outdoor ambient temperature is very low. At this time, it is necessary to further reduce the m value and use m2 to calculate K3.
  • the present disclosure provides a multi-line defrosting control device for an air conditioner.
  • the device of the present disclosure can be used for defrosting control of a modular air conditioner with multiple connections.
  • FIG. 4 is a structural block diagram of an embodiment of an air conditioner multi-line defrost control device provided by the present disclosure. As shown in FIG. 4 , the defrosting control device 100 includes a determination unit 110 and a control unit 120 .
  • the judging unit 110 is configured to judge whether the multi-line air conditioner satisfies the defrosting condition when the multi-line air conditioner is in heating operation.
  • the judging unit 110 is configured to obtain a capacity ratio of the sum of the rated capacity of the indoor unit that is heating and the sum of the rated capacities of all outdoor units; control the air conditioner according to the outdoor ambient temperature and the capacity ratio Multi-connection enters discontinuous heating and defrosting mode or continuous heating and defrosting mode.
  • the indoor unit that is heating is an indoor unit with a heating capacity requirement greater than 0.
  • the capacity ratio of the sum of the rated capacities of the indoor units that are heating to the sum of the rated capacities of all the outdoor units Qn the sum of the rated capacities of the indoor units whose heating capacity demand is greater than 0/the sum of the rated capacities of all the outdoor units.
  • the control unit 120 is configured to control the multi-line air conditioner to enter the discontinuous heating defrosting mode or the continuous heating defrosting mode according to the outdoor ambient temperature when the judging unit 110 judges that the defrosting condition is satisfied.
  • FIG. 5 is a structural block diagram of a specific implementation manner of a control unit according to an embodiment of the present disclosure.
  • the control unit 120 includes: a first determination subunit 121 , a second determination subunit 122 and a control subunit 123 .
  • the first determination subunit 121 is configured to determine a corresponding capacity correction coefficient according to a temperature interval in which the outdoor ambient temperature is located in a plurality of preset temperature intervals.
  • different temperature ranges correspond to different capacity correction coefficients. That is to say, by determining the temperature range in which the outdoor ambient temperature T is located in more than two preset temperature ranges, the corresponding capacity correction coefficient m can be determined, where m ⁇ 1.
  • the outdoor ambient temperature is divided into three temperature ranges. When t1 ⁇ Toutdoor , the corresponding capacity correction coefficient is m1, when t2 ⁇ Toutdoor ⁇ t1 , the corresponding capacity correction coefficient is m2, and when Toutdoor ⁇ t2 , the corresponding capacity correction coefficient is m3, where t1>t2.
  • Different capacity correction coefficients corresponding to different temperature ranges can be obtained through experiments.
  • the second determination sub-unit 122 is configured to determine the corresponding capacity according to the capacity correction coefficient and the sum of the rated capacities of the first N-1 outdoor units sorted in ascending order of rated capacity among the N outdoor units of the multi-connected air conditioners. Frost mode judgment coefficient.
  • N is the total number of outdoor units of the multi-connected air conditioner.
  • the first N-1 outdoor units in the N outdoor units of the multi-connection air conditioners sorted according to the rated capacity from small to large, that is, the N-1 outdoor units with the smallest rated capacity among the N outdoor units of the air conditioner multi-connection.
  • the sum of the rated capacity determines the corresponding defrost mode judgment coefficient.
  • the corresponding defrosting mode judgment coefficient is equal to the sum of the capacity correction coefficient and the rated capacity of the first N-1 outdoor units sorted according to the rated capacity from small to large among the N outdoor units of the multi-connected air conditioners. product.
  • Table 1 shows the defrost mode judgment coefficient corresponding to the outdoor ambient temperature under different total numbers of outdoor units.
  • the total number of modules is the total number of outdoor units connected to multiple air conditioners.
  • the defrost mode judgment coefficient is a designed capacity ratio, such as 25%, 50%, ...
  • the calculation principle of the defrost mode judgment coefficient is based on the principle of "minimum outdoor unit capacity", because in the process of rotating defrost (one outdoor unit defrosts, other outdoor units keep heating operation), "large-capacity outdoor units continue to heat.
  • the defrost mode judgment coefficient is used to judge whether to execute the continuous defrost mode, and the continuous heating defrost can be executed under the condition that the outlet air temperature of the indoor unit can be guaranteed.
  • the judgment value is determined according to the one with the smaller capacity (the one with the smaller capacity can provide less heat exchange).
  • the other two need to ensure heating, so the capacity of the two units and the capacity of the smallest outdoor unit is used to determine the defrosting mode judgment coefficient. Therefore, the above method of using different capacity correction values according to different outdoor ambient temperatures and obtaining different defrost mode judgment coefficients according to the minimum outdoor unit capacity can ensure that the outlet air temperature of the indoor unit meets the comfort requirements.
  • the control sub-unit 123 controls the multi-line air conditioner to enter the continuous heating defrosting mode or the discontinuous heating defrosting mode according to whether the capacity ratio is smaller than the defrosting mode judgment coefficient.
  • the non-continuous heating and defrosting includes: defrosting all outdoor units of the multi-line air conditioner together, and the continuous heating and defrosting includes: defrosting each outdoor unit of the multi-line air conditioner in turn until all The outdoor unit is defrosted.
  • the multi-line air conditioner includes three outdoor units A, B, and C, then A first (transfer cooling mode) enters the defrosting operation, and B and C keep heating operation; after the defrosting of A, B enters the defrosting, and A and C Keep heating operation; after B defrosting, C enters defrosting, A and B keep heating operation.
  • the unit will run normally for heating.
  • control the multi-line air conditioner For example, if the capacity ratio is less than the defrost mode judgment coefficient, control the multi-line air conditioner to enter the continuous heating defrost mode; if the capacity ratio is not less than the defrost mode judgment coefficient, control the air conditioner The multi-line air conditioner enters the discontinuous heating and defrosting mode.
  • the capacity ratio of the sum of the rated capacity of the indoor unit being heated and the sum of the rated capacity of all the outdoor units is obtained as Qn, when t1 ⁇ T outdoor , the corresponding defrost mode judgment coefficient is K1, if Qn ⁇ K1, then Control the multi-line of the air conditioner to enter the continuous heating and defrosting mode to perform continuous heating and defrosting; otherwise, control the multi-line of the air conditioner to enter the discontinuous heating and defrosting mode to perform discontinuous heating and defrosting; when t2 ⁇ When Toutdoor ⁇ t1 , the corresponding defrosting mode judgment coefficient is K2.
  • control the air conditioner to enter the continuous heating defrosting mode to perform continuous heating and defrosting, otherwise, control the air conditioner Multi-connection enters discontinuous heating and defrosting mode, and executes discontinuous heating and defrosting; when T outdoor ⁇ t2, the corresponding defrosting mode judgment coefficient is K3, if Qn ⁇ K3, control the air conditioner to enter multi-connection Continuous heating and defrosting mode to perform continuous heating and defrosting; otherwise, control the multi-line air conditioner to enter a discontinuous heating and defrosting mode to perform discontinuous heating and defrosting.
  • the present disclosure also provides a storage medium corresponding to the multi-line defrosting control method for an air conditioner, on which a computer program is stored, and when the program is executed by a processor, the steps of any one of the aforementioned methods are implemented.
  • the present disclosure also provides a multi-line air conditioner corresponding to the multi-line air conditioner defrosting control method, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, the processor executing the program
  • a multi-line air conditioner corresponding to the multi-line air conditioner defrosting control method, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, the processor executing the program
  • the present disclosure also provides an air conditioner multi-line corresponding to the air conditioner multi-line defrost control device, including any one of the above-mentioned air conditioner multi-line defrost control devices.
  • the multi-line air conditioner when the multi-line air conditioner needs to be defrosted, the multi-line air conditioner is controlled to enter the discontinuous heating defrosting mode or the continuous heating defrosting mode according to the outdoor ambient temperature, so as to optimize the multi-line continuous heating.
  • Defrost entry conditions to ensure that the outlet air temperature of the indoor unit can meet the comfort requirements.
  • Select the corresponding defrost mode judgment coefficient according to the outdoor ambient temperature and then compare the defrost mode judgment coefficient with the capacity ratio Qn of the sum of the rated capacity of the indoor units whose heating capacity demand is greater than 0 and the sum of the rated capacities of all outdoor units. Determine whether to perform normal defrosting (discontinuous heating defrosting) or continuous heating defrosting.
  • the defrosting mode judgment parameters will be determined according to different capacity correction values, so as to judge according to the defrosting mode judgment parameters, and optimize the multi-line continuous heating and defrosting entry conditions.
  • the unit continues to heat to ensure the continuous supply of hot air in the room.
  • the unit performs different judgment methods to ensure that the outlet air temperature of the indoor unit can meet the comfort requirements.
  • each functional unit may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the disclosed technical content can be implemented in other ways.
  • the device embodiments described above are only illustrative, for example, the division of the units may be a logical function division, and there may be other division methods in actual implementation, for example, multiple units or components may be combined or Integration into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of units or modules, and may be in electrical or other forms.
  • the units described as separate components may or may not be physically separated, and the components as control devices may or may not be physical units, that is, may be located in one place, or may be distributed to multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
  • the technical solutions of the present disclosure can be embodied in the form of software products in essence, or the part that contributes to the prior art, or all or part of the technical solutions, and the computer software product is stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present disclosure.
  • the aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes .
  • the storage medium may be a non-transitory computer-readable storage medium.

Abstract

本公开提供一种空调多联机及其化霜控制方法、装置和存储介质，所述方法包括：在所述空调多联机制热运行时，判断所述空调多联机是否满足化霜条件；当判断满足化霜条件时，根据室外环境温度控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。本公开提供的方案能够通过优化多联机连续制热化霜进入条件实现更佳的送风舒适效果。

Description

空调多联机及其化霜控制方法、装置和存储介质
相关申请的交叉引用
本申请是以CN申请号为202011516820.8，申请日为2020年12月21日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。
技术领域
本公开涉及控制领域，尤其涉及一种空调多联机及其化霜控制方法、装置和存储介质。
背景技术
多联机可以模块化运行，但是在化霜方面，一般执行的是非连续制热化霜，即所有外机模块一起进行化霜。这种化霜模式控制简洁，化霜周期短，但是很多时候是“无霜化霜”。在低负荷时候，可以执行连续制热化霜，部分外机继续保持制热模式确保制热开机内机室内舒适性，部分外机转到制冷模式下进行化霜，化完之后彼此交替进行轮换化霜。这种连续制热化霜方式可以确保开机制热内机的室内舒适性，又能同时进行化霜。
发明内容
本公开一方面提供了一种空调多联机化霜控制方法，包括：在所述空调多联机制热运行时，判断所述空调多联机是否满足化霜条件；当判断满足化霜条件时，根据室外环境温度控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。
在一些实施例中，根据室外环境温度控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式，包括：获取正在制热的室内机的额定容量总和与所有室外机的额定容量总和的容量比值；根据所述室外环境温度以及所述容量比值控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。
在一些实施例中，根据所述室外环境温度以及所述容量比值控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式，包括：根据所述室外环境温度在预设多个温度区间中所处的温度区间确定对应的容量修正系数；根据所述容量修正系数和所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机的额 定容量总和确定对应的化霜模式判断系数，其中，N>1，且N为正整数；根据所述容量比值是否小于所述化霜模式判断系数控制所述空调多联机进入连续制热化霜模式或非连续制热化霜模式；其中，若所述容量比值小于所述化霜模式判断系数，则控制所述空调多联机进入连续制热化霜模式，若所述容量比值大于等于所述化霜模式判断系数，则控制所述空调多联机进入非连续制热化霜模式。
在一些实施例中，不同的温度区间对应不同的容量修正系数。
在一些实施例中，所述对应的化霜模式判断系数等于所述容量修正系数与所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机的额定容量总和的乘积。
在一些实施例中，判断所述空调多联机是否满足化霜条件，包括：当判断所述空调多联机的至少一台室外机满足化霜条件时，确定所述空调多联机满足化霜条件。
本公开另一方面提供了一种空调多联机化霜控制装置，包括：判断单元，用于在所述空调多联机制热运行时，判断所述空调多联机是否满足化霜条件；控制单元，用于当所述判断单元判断满足化霜条件时，根据室外环境温度控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。
在一些实施例中，所述控制单元被配置为获取正在制热的室内机的额定容量总和与所有室外机的额定容量总和的容量比值；根据所述室外环境温度以及所述容量比值控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。
在一些实施例中，所述控制单元包括：第一确定子单元，用于根据所述室外环境温度在预设多个温度区间中所处的温度区间确定对应的容量修正系数；第二确定子单元，用于根据所述容量修正系数和所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机的额定容量总和确定对应的化霜模式判断系数，其中，N>1，且N为正整数；控制子单元，用于根据所述容量比值是否小于所述化霜模式判断系数控制所述空调多联机进入连续制热化霜模式或非连续制热化霜模式；其中，所述控制子单元用于若所述容量比值小于所述化霜模式判断系数，则控制所述空调多联机进入连续制热化霜模式，若所述容量比值大于等于所述化霜模式判断系数，则控制所述空调多联机进入非连续制热化霜模式。
在一些实施例中，不同的温度区间对应不同的容量修正系数。
在一些实施例中，所述对应的化霜模式判断系数等于所述容量修正系数与所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机的额定容量 总和的乘积。
在一些实施例中，所述判断单元被配置为当判断所述空调多联机的至少一台室外机满足化霜条件时，确定所述空调多联机满足化霜条件。
本公开又一方面提供了一种存储介质，其上存储有计算机程序，所述程序被处理器执行时实现前述任一所述方法的步骤。
本公开再一方面提供了一种空调多联机，包括处理器、存储器以及存储在存储器上可在处理器上运行的计算机程序，所述处理器执行所述程序时实现前述任一所述方法的步骤。
本公开再一方面提供了一种空调多联机，包括前述任一所述的空调多联机化霜控制装置。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本公开的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1是本公开提供的空调多联机化霜控制方法的一实施例的方法示意图；
图2是根据所述室外环境温度以及所述容量比值控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式的步骤的一具体实施方式的流程示意图；
图3是本公开提供的空调多联机化霜控制方法的一具体实施例的方法示意图；
图4是本公开提供的空调多联机化霜控制装置的一实施例的结构框图；
图5是根据本公开实施例的控制单元的一具体实施方式的结构框图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合本公开具体实施例及相应的附图对本公开技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
需要说明的是，本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本公开的实施例能够以除了在这里图示或描述 的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本公开的发明人发现，相关技术中的空调多联机在连续制热化霜模式进入方面条件设定不合理，很多时候在无法保证制热开机内机出风温度的前提下执行连续制热化霜，结果导致较低出风温度，引起室内强烈不舒适感。
鉴于此，本公开的实施例提供一种空调多联机及其化霜控制方法、装置和存储介质，以尽可能地解决相关技术中多联机执行连续制热化霜时无法保证制热开机内机出风温度的问题。
本公开提供一种空调多联机化霜控制方法。本公开的方法可以用于模块化空调多联机的化霜控制。
图1是本公开提供的空调多联机化霜控制方法的一实施例的方法示意图。如图1所示，根据本公开的一个实施例，所述控制方法至少包括步骤S110和步骤S120。
步骤S110，在所述空调多联机制热运行时，判断所述空调多联机是否满足化霜条件。
例如，当检测室外机换热器温度低于预定温度值时，即满足化霜条件，进入化霜。在一些实施例中，当判断所述空调多联机的至少一台室外机满足化霜条件时，确定所述空调多联机满足化霜条件。
室外机内置的化霜感温包检测精度可能会影响是否满足化霜条件的判断。例如，有的室外机化霜温度感温包检测的温度达到了化霜进入条件，有的室外机化霜温度感温包检测的温度可能还不到化霜条件。对于这种情况，只要系统内任一化霜温度感温包检测的温度达到化霜条件，则整个空调多联机系统就进入化霜。
步骤S120，当判断满足化霜条件时，根据室外环境温度控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。
在一些实施例中，该步骤S120包括：获取正在制热的室内机的额定容量总和与所有室外机的额定容量总和的容量比值；根据所述室外环境温度以及所述容量比值控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。所述正在制热的室内机即为制热能力需求大于0的室内机。正在制热的室内机的额定容量总和与所有室外机的额定容量总和的容量比值Qn＝制热能力需求大于0的室内机额定容量总和/所有室外机的额定容量总和。
图2是根据所述室外环境温度以及所述容量比值控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式的步骤的一具体实施方式的流程示意图。如图2所示，步骤S120包括步骤S121、步骤S122和步骤S123。
步骤S121，根据所述室外环境温度在预设的两个以上温度区间中所处的温度区间确定对应的容量修正系数。
例如，不同的温度区间对应不同的容量修正系数。也就是说，确定所述室外环温度T 室外在预设的两个以上温度区间中所处的温度区间，即可确定其对应的容量修正系数m，m＜1。例如，将室外环境温度划分为三个温度区间，当t1＜T 室外时，对应的容量修正系数为m1，当t2＜T 室外≤t1时，对应的容量修正系数为m2，当T 室外≤t2时，对应的容量修正系数为m3，其中，t1＞t2。所述室外环境温度越低对应的所述容量修正系数越小，即，m1＞m2＞m3。不同的温度区间对应的不同的容量修正系数可以通过实验获得。
在一些实施例中，t1的取值范围为-5≤t1≤15，t2的取值范围为-15≤t2≤0，且t1＞t2。
在一些实施例中，容量修正系数m的取值范围为0.1≤m≤1.5(例如，m为0.8)。其中，m1＞m2＞m3。
步骤S122，根据所述容量修正系数和所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机的额定容量总和确定对应的化霜模式判断系数。这里，N>1，且N为正整数。
例如，N为所述空调多联机的室外机总数量。所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机，即所述空调多联机N台室外机中额定容量最小的N-1台室外机的额定容量总和确定对应的化霜模式判断系数。其中，所述对应的化霜模式判断系数等于所述容量修正系数与所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机的额定容量总和的乘积。
例如，表1示出了不同室外机总数量情况下，室外环境温度对应的化霜模式判断系数。K1为t1＜T 室外时(容量修正系数m＝m1)对应的化霜模式判断系数，K2为t2＜T 室外≤t1时(容量修正系数m＝m2)对应的化霜模式判断系数，K3为T 室外≤t2时(容量修正系数m＝m3)对应的化霜模式判断系数。表1中，模块总数量即空调多联机的室外机总数量。化霜模式判断系数是设计的一种容量比，例如25％、50％、…
Figure PCTCN2021129738-appb-000001
Figure PCTCN2021129738-appb-000002
表1
化霜模式判断系数的计算原则依据“最小室外机容量”原则，因为在轮换化霜过程中(一台室外机进行化霜，其他室外机保持制热运行)，“大容量外机继续制热、小容量外机去轮换化霜”的情况一般没有问题，然而在“大容量外机轮换化霜、小容量外机制热”的情况下，小容量外机一般无法保障内机出风温度，因此，采用化霜模式判断系数判断是否执行连续化霜模式，在能够保证内机出风温度的情况下执行连续制热化霜。例如，若系统内有两台外机，则按照容量较小那台去决定判断值(容量较小那台能够提供的换热量小)。同理，系统内有3台外机时，其中1台去化霜时，另外两台需要保障制热，所以用两台容量和最小的外机的容量确定化霜模式判断系数。因此，上述根据不同室外环境温度，采用不同的容量修正值，并根据最小外机容量得到不同的化霜模式判断系数的方式，能够确保室内机的出风温度满足舒适要求。
步骤S123，根据所述容量比值是否小于所述化霜模式判断系数控制所述空调多联机进入连续制热化霜模式或非连续制热化霜模式。
所述非连续制热化霜包括：所述空调多联机的所有室外机一起进行化霜，所述连续制热化霜包括：所述空调多联机的每个室外机轮流进行化霜，直至所有室外机完成化霜，即一台室外机进行化霜，其他室外机保持制热运行。例如，空调多联机包括A、B、C三台室外机，则A先(转制冷模式)进入化霜，B以及C保持制热运行；A化霜结束后，B进入化霜，A及C保持制热运行；B化霜结束后，C进入化霜，A及B保持制热运行。当C结束化霜后，机组正常制热运行。
例如，若所述容量比值小于所述化霜模式判断系数，则控制所述空调多联机进入连续制热化霜模式，若所述容量比值不小于所述化霜模式判断系数，则控制所述多联机空调进入非连续制热化霜模式。
例如，获取正在制热的室内机的额定容量总和与所有室外机的额定容量总和的容量比 值为Qn，当t1＜T 室外时，对应的化霜模式判断系数为K1，若Qn＜K1，则控制所述空调多联机进入连续制热化霜模式，以执行连续制热化霜，否则，控制所述空调多联机进入非连续制热化霜模式，执行非连续制热化霜；当t2＜T 室外≤t1时，对应的化霜模式判断系数为K2，若Qn＜K2，则控制所述空调多联机进入连续制热化霜模式，以执行连续制热化霜，否则，控制所述空调多联机进入非连续制热化霜模式，执行非连续制热化霜；当T 室 外≤t2时，对应的化霜模式判断系数为K3，若Qn＜K3，则控制所述空调多联机进入连续制热化霜模式，以执行连续制热化霜，否则，控制所述空调多联机进入非连续制热化霜模式，执行非连续制热化霜。
为清楚说明本公开技术方案，下面再以一个具体实施例对本公开提供的空调多联机化霜控制方法的执行流程进行描述。
图3是本公开提供的空调多联机化霜控制方法的一具体实施例的方法示意图。如图3所示，空调多联机开机运行后，判断是否满足化霜条件，当判断不满足化霜条件时，继续正常运行，当判断满足化霜条件时，进一步判断是进入连续制热化霜还是非连续制热化霜。当室外环境温度大于t1温度值时，利用m1计算K1值，并进行判断，当制热开机的室内机的总容量与所有室外机的总容量的容量比值Qn＜K1值时，进入连续制热并保障其出风温度，若制热开机的室内机的总容量与所有室外机的总容量的容量比值Qn≥K1值，因无法保障出风温度，机组不进入连续制热化霜，按普通化霜(非连续制热化霜)执行；当室外环境温度在t2到t1之间时，利用m2计算K2值，并进行判断，当制热开机的室内机的总容量与所有室外机的总容量的容量比值Qn＜K2值时，进入连续制热并保障其出风温度，若制热开机的室内机的总容量与所有室外机的总容量的容量比值Qn≥K2值，因无法保障出风温度，机组不进入连续制热化霜，按普通化霜(非连续制热化霜)执行，室外温度小于t2时，利用m3计算K3值，并进行判断，当制热开机的室内机的总容量与所有室外机的总容量的容量比值Qn＜K3值时，进入连续制热并保障其出风温度，若制热开机的室内机的总容量与所有室外机的总容量的容量比值Qn≥K3值，因无法保障出风温度，机组不进入连续制热化霜，按普通化霜(非连续制热化霜)执行。
上述实施方式中，当室外环境温度大于t1温度值时，此时认为环境温度相对较高，用较高的容量修正系数m1去计算化霜模式判断系数K1，并进行判断，当制热开机的室内机的总容量与所有室外机的总容量的容量比值Qn＜K1值时，表明这些制热开机的内机容量不大，可以进入连续制热并保障其出风温度，若制热开机的室内机的总容量与所有室外机的总容量的容量比值Qn≥K1值，因无法保障出风温度，机组不进入连续制热化霜， 按普通化霜执行；室外环境温度在t2到t1之间时，相对于前述情况，温度降低了，此时是否进入连续制热，需要用比m1值更小的m2去计算K2，也可以理解为，系统在轮换化霜时，越低的室外环境温度，保障室内机达到目标出风温度的容量越小，例如室外-5℃时，最小外机运行时能保障3台内机出风温度达到38℃以上，但-20℃时，可能只能保障2台甚至1台室内机出风温度达到38℃以上。采用这样的判断方式，能够让机组连续制热效果得到了保障。室外温度小于t2时，可理解为室外环境温度很低了，此时需要进一步调低m值，用m2去计算K3。
本公开提供一种空调多联机化霜控制装置。本公开装置可以用于模块化空调多联机的化霜控制。
图4是本公开提供的空调多联机化霜控制装置的一实施例的结构框图。如图4所示，所述化霜控制装置100包括判断单元110和控制单元120。
判断单元110用于在所述空调多联机制热运行时，判断所述空调多联机是否满足化霜条件。
在一些实施例中，判断单元110被配置为获取正在制热的室内机的额定容量总和与所有室外机的额定容量总和的容量比值；根据所述室外环境温度以及所述容量比值控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。所述正在制热的室内机即制热能力需求大于0的室内机。正在制热的室内机的额定容量总和与所有室外机的额定容量总和的容量比值Qn＝制热能力需求大于0的室内机额定容量总和/所有室外机的额定容量总和。
控制单元120用于当所述判断单元110判断满足化霜条件时，根据室外环境温度控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。
图5是根据本公开实施例的控制单元的一具体实施方式的结构框图。如图5所示，所述控制单元120包括：第一确定子单元121、第二确定子单元122和控制子单元123。
第一确定子单元121用于根据所述室外环境温度在预设多个温度区间中所处的温度区间确定对应的容量修正系数。
例如，不同的温度区间对应不同的容量修正系数。也就是说，确定所述室外环境温度T 室外在预设的两个以上温度区间中所处的温度区间，即可确定其对应的容量修正系数m，m＜1。例如，将室外环境温度划分为三个温度区间，当t1＜T 室外时，对应的容量修正系数为m1，当t2＜T 室外≤t1时，对应的容量修正系数为m2，当T 室外≤t2时，对应的容量修正系数为m3，其中，t1＞t2。所述室外环境温度越低对应的所述容量修正系数越小，即， m1＞m2＞m3。不同的温度区间对应的不同的容量修正系数可以通过实验获得。
第二确定子单元122用于根据所述容量修正系数和所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机的额定容量总和确定对应的化霜模式判断系数。
例如，N为所述空调多联机的室外机总数量。所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机，即所述空调多联机N台室外机中额定容量最小的N-1台室外机的额定容量总和确定对应的化霜模式判断系数。其中，所述对应的化霜模式判断系数等于所述容量修正系数与所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机的额定容量总和的乘积。
例如，表1示出了不同室外机总数量情况下，室外环境温度对应的化霜模式判断系数。K1为t1＜T 室外时(容量修正系数m＝m1)对应的化霜模式判断系数，K2为t2＜T 室外≤t1时(容量修正系数m＝m2)对应的化霜模式判断系数，K3为T 室外≤t2时(容量修正系数m＝m3)对应的化霜模式判断系数。表1中，模块总数量即空调多联机的室外机总数量。化霜模式判断系数是设计的一种容量比，例如25％、50％、…
Figure PCTCN2021129738-appb-000003
表1
化霜模式判断系数的计算原则依据“最小室外机容量”原则，因为在轮换化霜过程中(一台室外机进行化霜，其他室外机保持制热运行)，“大容量外机继续制热、小容量外机去轮换化霜”的情况一般没有问题，然而在“大容量外机轮换化霜、小容量外机制热”的情况下，小容量外机一般无法保障内机出风温度，因此，采用化霜模式判断系数判断是否执行连续化霜模式，在能够保证内机出风温度的情况下执行连续制热化霜。例如，若系统内有两台外机，则按照容量较小那台去决定判断值(容量较小那台能够提供的换热量小)。 同理，系统内有3台外机时，其中1台去化霜时，另外两台需要保障制热，所以用两台容量和最小的外机的容量确定化霜模式判断系数。因此，上述根据不同室外环境温度，采用不同的容量修正值，并根据最小外机容量得到不同的化霜模式判断系数的方式，能够确保室内机的出风温度满足舒适要求。
控制子单元123根据所述容量比值是否小于所述化霜模式判断系数控制所述空调多联机进入连续制热化霜模式或非连续制热化霜模式。
所述非连续制热化霜包括：所述空调多联机的所有室外机一起进行化霜，所述连续制热化霜包括：所述空调多联机的每个室外机轮流进行化霜，直至所有室外机完成化霜。例如，空调多联机包括A、B、C三台室外机，则A先(转制冷模式)进入化霜，B以及C保持制热运行；A化霜结束后，B进入化霜，A及C保持制热运行；B化霜结束后，C进入化霜，A及B保持制热运行。当C结束化霜后，机组正常制热运行。
例如，若所述容量比值小于所述化霜模式判断系数，则控制所述空调多联机进入连续制热化霜模式，若所述容量比值不小于所述化霜模式判断系数，则控制所述多联机空调进入非连续制热化霜模式。
例如，获取正在制热的室内机的额定容量总和与所有室外机的额定容量总和的容量比值为Qn，当t1＜T 室外时，对应的化霜模式判断系数为K1，若Qn＜K1，则控制所述空调多联机进入连续制热化霜模式，以执行连续制热化霜，否则，控制所述空调多联机进入非连续制热化霜模式，执行非连续制热化霜；当t2＜T 室外≤t1时，对应的化霜模式判断系数为K2，若Qn＜K2，则控制所述空调多联机进入连续制热化霜模式，以执行连续制热化霜，否则，控制所述空调多联机进入非连续制热化霜模式，执行非连续制热化霜；当T 室 外≤t2时，对应的化霜模式判断系数为K3，若Qn＜K3，则控制所述空调多联机进入连续制热化霜模式，以执行连续制热化霜，否则，控制所述空调多联机进入非连续制热化霜模式，执行非连续制热化霜。
本公开还提供对应于所述空调多联机化霜控制方法的一种存储介质，其上存储有计算机程序，所述程序被处理器执行时实现前述任一所述方法的步骤。
本公开还提供对应于所述空调多联机化霜控制方法的一种空调多联机，包括处理器、存储器以及存储在存储器上可在处理器上运行的计算机程序，所述处理器执行所述程序时实现前述任一所述方法的步骤。
本公开还提供对应于所述空调多联机化霜控制装置的一种空调多联机，包括前述任一所述的空调多联机化霜控制装置。
据此，本公开提供的方案，当空调多联机需要化霜时，根据室外环境温度控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式，优化多联机连续制热化霜进入条件，确保开机室内机的出风温度满足舒适要求。根据室外环境温度的大小选择对应的化霜模式判断系数，然后根据制热能力需求大于0的室内机额定容量总和与所有室外机额定容量总和的容量比值Qn与化霜模式判断系数进行比较，以判断执行常规化霜(非连续制热化霜)还是连续制热化霜。根据室外环境温度不同，进入制热化霜之前会根据不同的容量修正值确定化霜模式判断参数，从而根据化霜模式判断参数进行判断，优化多联机连续制热化霜进入条件，在负荷一定范围内，机组持续进行制热，保障室内持续送热风，在不同环境温度下，机组执行不同的判断方法，确保开机室内机的出风温度满足舒适要求。
本文中所描述的功能可在硬件、由处理器执行的软件、固件或其任何组合中实施。如果在由处理器执行的软件中实施，那么可将功能作为一或多个指令或代码存储于计算机可读媒体上或经由计算机可读媒体予以传输。其它实例及实施方案在本公开及所附权利要求书的范围及精神内。举例来说，归因于软件的性质，上文所描述的功能可使用由处理器、硬件、固件、硬连线或这些中的任何者的组合执行的软件实施。此外，各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在本申请所提供的几个实施例中，应该理解到，所揭露的技术内容，可通过其它的方式实现。其中，以上所描述的装置实施例仅仅是示意性的，例如所述单元的划分，可以为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，单元或模块的间接耦合或通信连接，可以是电性或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为控制装置的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可为个人计算机、服务器或者网络设备等)执行本公开各个实施例所述方法的全部或部分 步骤。而前述的存储介质包括：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。例如，该存储介质可以为非瞬时性计算机可读存储介质。
以上所述仅为本公开的实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的权利要求范围之内。

Claims (14)

  1. 一种空调多联机化霜控制方法，包括：
    在所述空调多联机制热运行时，判断所述空调多联机是否满足化霜条件；
    当判断满足化霜条件时，根据室外环境温度控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。
  2. 根据权利要求1所述的方法，其中，根据室外环境温度控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式，包括：
    获取正在制热的室内机的额定容量总和与所有室外机的额定容量总和的容量比值；
    根据所述室外环境温度以及所述容量比值控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。
  3. 根据权利要求2所述的方法，其中，根据所述室外环境温度以及所述容量比值控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式，包括：
    根据所述室外环境温度在预设多个温度区间中所处的温度区间确定对应的容量修正系数；
    根据所述容量修正系数和所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机的额定容量总和确定对应的化霜模式判断系数，其中，N>1，且N为正整数；
    根据所述容量比值是否小于所述化霜模式判断系数控制所述空调多联机进入连续制热化霜模式或非连续制热化霜模式；
    其中，若所述容量比值小于所述化霜模式判断系数，则控制所述空调多联机进入连续制热化霜模式，若所述容量比值大于等于所述化霜模式判断系数，则控制所述空调多联机进入非连续制热化霜模式。
  4. 根据权利要求3所述的方法，其中，
    不同的温度区间对应不同的容量修正系数。
  5. 根据权利要求3所述的方法，其中，
    所述对应的化霜模式判断系数等于所述容量修正系数与所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机的额定容量总和的乘积。
  6. 根据权利要求1-5任一项所述的方法，其中，判断所述空调多联机是否满足化霜条件，包括：
    当判断所述空调多联机的至少一台室外机满足化霜条件时，确定所述空调多联机满足化霜条件。
  7. 一种空调多联机化霜控制装置，包括：
    判断单元，用于在所述空调多联机制热运行时，判断所述空调多联机是否满足化霜条件；
    控制单元，用于当所述判断单元判断满足化霜条件时，根据室外环境温度控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。
  8. 根据权利要求7所述的装置，其中，
    所述控制单元被配置为获取正在制热的室内机的额定容量总和与所有室外机的额定容量总和的容量比值，根据所述室外环境温度以及所述容量比值控制所述空调多联机进入非连续制热化霜模式或连续制热化霜模式。
  9. 根据权利要求8所述的装置，其中，所述控制单元包括：
    第一确定子单元，用于根据所述室外环境温度在预设多个温度区间中所处的温度区间确定对应的容量修正系数；
    第二确定子单元，用于根据所述容量修正系数和所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机的额定容量总和确定对应的化霜模式判断系数，其中，N>1，且N为正整数；
    控制子单元，用于根据所述容量比值是否小于所述化霜模式判断系数控制所述空调多联机进入连续制热化霜模式或非连续制热化霜模式；
    其中，所述控制子单元用于若所述容量比值小于所述化霜模式判断系数，则控制所述空调多联机进入连续制热化霜模式，若所述容量比值大于等于所述化霜模式判断 系数，则控制所述空调多联机进入非连续制热化霜模式。
  10. 根据权利要求9所述的装置，其中，
    不同的温度区间对应不同的容量修正系数。
  11. 根据权利要求9所述的装置，其中，
    所述对应的化霜模式判断系数等于所述容量修正系数与所述空调多联机的N台室外机中按照额定容量从小到大排序后的前N-1台室外机的额定容量总和的乘积。
  12. 根据权利要求7-11任一项所述的装置，其中，
    所述判断单元被配置为当判断所述空调多联机的至少一台室外机满足化霜条件时，确定所述空调多联机满足化霜条件。
  13. 一种存储介质，其上存储有计算机程序，所述程序被处理器执行时实现权利要求1-6任一所述方法的步骤。
  14. 一种空调多联机，包括处理器、存储器以及存储在存储器上可在处理器上运行的计算机程序，所述处理器执行所述程序时实现权利要求1-6任一所述方法的步骤，或者包括如权利要求7-12任一所述的空调多联机化霜控制装置。
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