WO2020143155A1 - 一种多联机空调及其控制方法 - Google Patents

一种多联机空调及其控制方法 Download PDF

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Publication number
WO2020143155A1
WO2020143155A1 PCT/CN2019/088709 CN2019088709W WO2020143155A1 WO 2020143155 A1 WO2020143155 A1 WO 2020143155A1 CN 2019088709 W CN2019088709 W CN 2019088709W WO 2020143155 A1 WO2020143155 A1 WO 2020143155A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
supplemental
air conditioner
control valve
branch
Prior art date
Application number
PCT/CN2019/088709
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English (en)
French (fr)
Inventor
刘景升
宋强
任滔
孟庆良
李银银
刘江彬
国德防
谭雪艳
Original Assignee
青岛海尔空调电子有限公司
海尔智家股份有限公司
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Application filed by 青岛海尔空调电子有限公司, 海尔智家股份有限公司 filed Critical 青岛海尔空调电子有限公司
Priority to US16/761,476 priority Critical patent/US11378296B2/en
Publication of WO2020143155A1 publication Critical patent/WO2020143155A1/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
    • F24F11/70—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
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • 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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units

Definitions

  • the present application relates to the technical field of air conditioners, for example, to a multi-line air conditioner and its control method.
  • Multi-line air conditioner is connected by two or more indoor units to an outdoor unit through pipes.
  • Multi-line air conditioner is a kind of central air conditioner, its adaptability is better than the general central air conditioner unit, and the temperature adjustment range is wider.
  • the current multi-connected air conditioner controls the opening of the supplementary air circuit through a regulating valve, and then adjusts the degree of superheat, and the multi-connected air conditioner has multiple parallel supplemental air circuits.
  • the degree of superheat is adjusted by separately controlling the opening of the supplemental gas circuit, and there is no associated control between them, so that the heat exchange capacity of the heat exchanger cannot be maximized.
  • the embodiment of the present disclosure provides a control method of a multi-line air conditioner.
  • the multi-connected air conditioner includes multiple outdoor heat exchangers connected in parallel to the refrigerant main circulation flow path, and the parallel branch where each outdoor heat exchanger is located is provided with a controllable refrigerant flow through the parallel branches Branch control valve; and a supplemental gas pipe group, which is used to transfer part of the refrigerant in the main refrigerant flow path to the supplemental gas port of the compressor to supplement the compressor.
  • the supplemental gas pipe group includes a supplementary gas pipeline and a supplemental heat exchanger And supplemental gas control valve, in which the two ends of the supplementary gas pipeline are connected to the refrigerant main circulation pipeline and the supplementary air inlet of the compressor, and the two heat exchange chambers of the supplementary air heat exchanger are connected in series to the refrigerant main circulation pipeline and the supplementary air
  • the gas pipeline and the air supplement control valve are used to control the refrigerant flow to the compressor; the control methods include:
  • the refrigerant flow rate of the branch control valve is controlled and adjusted so that the current superheat reaches the set target superheat;
  • the refrigerant flow rate of the supplementary air control valve is controlled and adjusted.
  • the embodiments of the present disclosure provide a multi-connected air conditioner.
  • the multi-line air conditioner includes a plurality of outdoor heat exchangers connected in parallel to the refrigerant main circulation flow path, and the parallel branch where each outdoor heat exchanger is located is provided with a controllable flow through the parallel branch.
  • the supplemental gas pipe group includes a supplemental gas pipeline and a supplemental gas exchange Heater and supplemental gas control valve, wherein the two ends of the supplemental gas pipeline are respectively connected to the refrigerant main circulation pipeline and the compressor's supplementary air port, and the two heat exchange chambers of the supplementary air heat exchanger are respectively connected in series to the refrigerant main circulation pipeline
  • the air supply control valve is used to control the flow of refrigerant to the compressor; it also includes a controller for:
  • the refrigerant flow rate of the branch control valve is controlled and adjusted so that the current superheat reaches the set target superheat;
  • the refrigerant flow rate of the supplementary air control valve is controlled and adjusted.
  • An embodiment of the present disclosure provides an electronic device.
  • the electronic device includes:
  • At least one processor At least one processor
  • a memory communicatively connected to the at least one processor; wherein,
  • the memory stores instructions executable by the at least one processor.
  • the at least one processor is caused to execute the control method of the multi-connected air conditioner described above.
  • Embodiments of the present disclosure provide a computer-readable storage medium.
  • the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are configured to perform the control method of the multi-line air conditioner described above.
  • An embodiment of the present disclosure provides a computer program product.
  • the computer program product includes a computer program stored on a computer-readable storage medium.
  • the computer program includes program instructions. When the program instructions are executed by a computer, the computer is caused to perform the Control method of online air conditioner.
  • the air-conditioning control method provided by the present disclosure can correlate the control of the air supplement control valves of each refrigerant flow branch of the multi-line air conditioner, adjust the superheat degree by controlling the opening degree of each air supplement control valve, and improve the heat exchange performance.
  • the heat exchange capacity of multi-line air conditioners is maximized.
  • FIG. 2 is a schematic flowchart of a control method of an air conditioner of the present disclosure provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic flowchart of a control method of the air conditioner of the present disclosure provided by an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart of a control method of the air conditioner of the present disclosure provided by an embodiment of the present disclosure
  • FIG. 5 is a schematic flowchart of a control method of the air conditioner of the present disclosure provided by an embodiment of the present disclosure
  • FIG. 6 is a schematic flowchart of a control method of an air conditioner of the present disclosure provided by an embodiment of the present disclosure
  • FIG. 7 is a schematic flowchart of a control method of the air conditioner of the present disclosure provided by an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of the overall structure of the air conditioner of the present disclosure provided by an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.
  • FIG. 1 is a schematic flowchart of a control method of an air conditioner of the present disclosure according to an exemplary embodiment.
  • the present disclosure provides a control method for an air conditioner, which can correlate the control of the air supplement control valves 14 of each refrigerant flow branch of the multi-connected air conditioner 1 by controlling each air supplement control valve
  • the opening degree of 14 adjusts the degree of superheat, improves the heat exchange performance, and maximizes the heat exchange capacity of the multi-line air conditioner 1.
  • the main steps of the control method include:
  • the degree of superheat refers to the difference between the superheat temperature and the saturation temperature of the refrigerant under the same evaporating pressure in the refrigeration cycle.
  • the multi-line air conditioner 1 includes a plurality of outdoor heat exchangers connected in parallel to the refrigerant main circulation flow path, and the parallel branch where each outdoor heat exchanger is located is provided with a branch control valve that can control the flow of refrigerant flowing through the parallel branches ; And a supplementary gas pipe group, which is used to transfer part of the refrigerant in the main circulation flow path of the refrigerant to the supplemental gas port of the compressor to supplement the compressor.
  • the supplemental gas pipe group includes a supplemental gas pipeline, a supplemental gas heat exchanger and a supplemental gas control valve 14.
  • the two ends of the supplementary gas pipeline are respectively connected to the refrigerant main circulation pipeline and the compressor air supply port, and the two heat exchange chambers of the supplementary air heat exchanger are respectively connected in series to the refrigerant main circulation pipeline and the supplementary air pipeline.
  • the gas control valve 14 is used to control the flow rate of the refrigerant that supplements the compressor.
  • the multi-connected air conditioner 1 may be provided with temperature sensors at both ends of the pipeline to detect the temperature at both ends of the pipeline, thereby obtaining the current superheat degree of the multi-connected air conditioner 1.
  • the air conditioner is provided with a controller 13, which can set the target superheat degree in advance.
  • the target superheat degree is not limited here, and may be 1 degree.
  • the controller 13 can control and adjust the refrigerant flow rate of the branch control valve, and adjust the temperature at both ends of the pipeline by changing the refrigerant flow rate of each branch, so that the current superheat degree is adjusted to reach the set target superheat degree.
  • the air conditioner is provided with a controller 13, which can control the supplemental air control valve 14, the supplemental air control valve 14 can control the flow rate of the refrigerant, each branch control valve controls the refrigerant flow rate of the branch, and each supplemental air control valve 14 There is an association relationship.
  • FIG. 2 is a schematic flowchart of a control method of an air conditioner of the present disclosure according to yet another exemplary embodiment.
  • the present disclosure also provides another method for controlling an air conditioner.
  • the control method can also correlate the control of the air supplement control valve 14 of each refrigerant flow branch of the multi-connected air conditioner 1 by controlling each supplement
  • the opening degree of the gas control valve 14 adjusts the superheat degree, improves the heat exchange performance, and maximizes the heat exchange capacity of the multi-line air conditioner 1.
  • the main steps of the control method include:
  • the degree of superheat refers to the difference between the superheat temperature and the saturation temperature of the refrigerant under the same evaporating pressure in the refrigeration cycle.
  • the multi-line air conditioner 1 includes a plurality of outdoor heat exchangers connected in parallel to the refrigerant main circulation flow path, and the parallel branch where each outdoor heat exchanger is located is provided with a branch control valve that can control the flow of refrigerant flowing through the parallel branches ; And a supplementary gas pipe group, which is used to transfer part of the refrigerant in the main circulation flow path of the refrigerant to the supplemental gas port of the compressor to supplement the compressor.
  • the supplemental gas pipe group includes a supplemental gas pipeline, a supplemental gas heat exchanger and a supplemental gas control valve 14.
  • the two ends of the supplementary gas pipeline are respectively connected to the refrigerant main circulation pipeline and the compressor air supply port, and the two heat exchange chambers of the supplementary air heat exchanger are respectively connected in series to the refrigerant main circulation pipeline and the supplementary air pipeline.
  • the gas control valve 14 is used to control the flow rate of the refrigerant that supplements the compressor.
  • the multi-connected air conditioner 1 may be provided with temperature sensors at both ends of the pipeline to detect the temperature at both ends of the pipeline, thereby obtaining the current superheat degree of the multi-connected air conditioner 1.
  • the air conditioner is provided with a controller 13, which can set the target superheat degree in advance.
  • the target superheat degree is not limited here, and may be 1 degree.
  • the controller 13 can control and adjust the refrigerant flow rate of the branch control valve, and adjust the temperature at both ends of the pipeline by changing the refrigerant flow rate of each branch, so that the current superheat degree is adjusted to reach the set target superheat degree.
  • the multi-connected air conditioner 1 has a controller 13 that can be used to calculate the sum of refrigerant flow of each branch control valve, and adjust the refrigerant flow of the supplementary air control valve 14 according to the refrigerant flow of each branch control valve Control, when the sum of the refrigerant flow of each branch control valve is less than the preset refrigerant flow parameter, the controller 13 opens the supplemental gas control valve 14; when the sum of the refrigerant flow of each branch control valve is greater than or equal to the preset refrigerant When the flow rate parameter is reached, the controller 13 closes the supplemental gas control valve 14.
  • the multi-connected air conditioner 1 has a controller 13 that can control the flow opening degree of the supplemental air control valve 14 according to the negative value of the sum of the refrigerant flow rates of the control valves of each branch.
  • the controller 13 opens the supplemental gas control valve 14; when the sum of the refrigerant flow of each branch control valve is greater than or equal to the preset refrigerant flow parameter , The controller 13 closes the supplemental gas control valve 14.
  • FIG. 3 is a schematic flowchart of a method for controlling an air conditioner of the present disclosure according to yet another exemplary embodiment.
  • the present disclosure also provides another control method for an air conditioner.
  • the control method can also correlate the control of the air supplement control valve 14 of each refrigerant flow branch of the multi-connected air conditioner 1, by controlling each supplement
  • the opening degree of the gas control valve 14 adjusts the superheat degree, improves the heat exchange performance, and maximizes the heat exchange capacity of the multi-line air conditioner 1.
  • the main steps of the control method include:
  • the degree of superheat refers to the difference between the superheat temperature and the saturation temperature of the refrigerant under the same evaporating pressure in the refrigeration cycle.
  • the multi-line air conditioner 1 includes a plurality of outdoor heat exchangers connected in parallel to the refrigerant main circulation flow path, and the parallel branch where each outdoor heat exchanger is located is provided with a branch control valve that can control the flow of refrigerant flowing through the parallel branches ; And a supplementary gas pipe group, which is used to transfer part of the refrigerant in the main circulation flow path of the refrigerant to the supplemental gas port of the compressor to supplement the compressor.
  • the supplemental gas pipe group includes a supplemental gas pipeline, a supplemental gas heat exchanger and a supplemental gas control valve 14.
  • the two ends of the supplementary gas pipeline are respectively connected to the refrigerant main circulation pipeline and the compressor air supply port, and the two heat exchange chambers of the supplementary air heat exchanger are respectively connected in series to the refrigerant main circulation pipeline and the supplementary air pipeline.
  • the gas control valve 14 is used to control the flow rate of the refrigerant that supplements the compressor.
  • the multi-connected air conditioner 1 may be provided with temperature sensors at both ends of the pipeline to detect the temperature at both ends of the pipeline, thereby obtaining the current superheat degree of the multi-connected air conditioner 1.
  • the multi-connected air conditioner 1 may also have a controller 13, and the control valves of each branch may be directly connected to the controller 13, and the controller 13 may directly control the refrigerant flow of each branch control valve.
  • the controller 13 may directly control and increase the refrigerant flow rate of one of the branch control valves.
  • the multi-connected air conditioner 1 may also have a controller 13, and the control valves of each branch may be directly connected to the controller 13.
  • the controller 13 may Direct control to increase the flow of multiple refrigerants in each branch control valve.
  • the multiple control branches are the control branches, which are not limited here. Each control branch is connected in parallel, which is equivalent to the flow distribution of refrigerant flow. of.
  • the air conditioner is provided with a controller 13, which can control the supplemental air control valve 14, the supplemental air control valve 14 can control the flow rate of the refrigerant, each branch control valve controls the refrigerant flow rate of the branch, and each supplemental air control valve 14 There is an association relationship.
  • FIG. 4 is a schematic flowchart of a control method of an air conditioner of the present disclosure according to yet another exemplary embodiment.
  • the present disclosure also provides another method for controlling an air conditioner.
  • the control method can also correlate the control of the air supplement control valve 14 of each refrigerant flow branch of the multi-connected air conditioner 1 by controlling each supplement
  • the opening degree of the gas control valve 14 adjusts the superheat degree, improves the heat exchange performance, and maximizes the heat exchange capacity of the multi-line air conditioner 1.
  • the main steps of the control method include:
  • the degree of superheat refers to the difference between the superheat temperature and the saturation temperature of the refrigerant under the same evaporating pressure in the refrigeration cycle.
  • the multi-line air conditioner 1 includes a plurality of outdoor heat exchangers connected in parallel to the refrigerant main circulation flow path, and the parallel branch where each outdoor heat exchanger is located is provided with a branch control valve that can control the flow of refrigerant flowing through the parallel branches ; And a supplementary gas pipe group, which is used to transfer part of the refrigerant in the main circulation flow path of the refrigerant to the supplemental gas port of the compressor to supplement the compressor.
  • the supplemental gas pipe group includes a supplemental gas pipeline, a supplemental gas heat exchanger and a supplemental gas control valve 14.
  • the two ends of the supplementary gas pipeline are respectively connected to the refrigerant main circulation pipeline and the compressor air supply port, and the two heat exchange chambers of the supplementary air heat exchanger are respectively connected in series to the refrigerant main circulation pipeline and the supplementary air pipeline.
  • the gas control valve 14 is used to control the flow rate of the refrigerant that supplements the compressor.
  • the multi-connected air conditioner 1 may be provided with temperature sensors at both ends of the pipeline to detect the temperature at both ends of the pipeline, thereby obtaining the current superheat degree of the multi-connected air conditioner 1.
  • the multi-connected air conditioner 1 may also have a controller 13, and the control valves of each branch may be directly connected to the controller 13, and the controller 13 may directly control the refrigerant flow of each branch control valve.
  • the controller 13 can directly control and reduce the refrigerant flow rate of one of the branch control valves.
  • the multi-connected air conditioner 1 may also have a controller 13, and the control valves of each branch may be directly connected to the controller 13.
  • the controller 13 may directly control Reducing the flow of multiple refrigerants in the control valves of each branch.
  • the multiple control branches are the control branches, which are not limited here. Each control branch is connected in parallel, and the splitting effect on the flow of refrigerant is equivalent.
  • the air conditioner is provided with a controller 13, which can control the supplemental air control valve 14, the supplemental air control valve 14 can control the flow rate of the refrigerant, each branch control valve controls the refrigerant flow rate of the branch, and each supplemental air control valve 14 There is an association relationship.
  • FIG. 5 is a schematic flowchart of a control method of an air conditioner of the present disclosure according to yet another exemplary embodiment.
  • the present disclosure also provides another method for controlling an air conditioner.
  • the control method can also correlate the control of the air supplement control valve 14 of each refrigerant flow branch of the multi-connected air conditioner 1 by controlling each supplement
  • the opening degree of the gas control valve 14 adjusts the superheat degree, improves the heat exchange performance, and maximizes the heat exchange capacity of the multi-line air conditioner 1.
  • the main steps of the control method include:
  • the degree of superheat refers to the difference between the superheat temperature and the saturation temperature of the refrigerant under the same evaporating pressure in the refrigeration cycle.
  • the multi-line air conditioner 1 includes a plurality of outdoor heat exchangers connected in parallel to the refrigerant main circulation flow path, and the parallel branch where each outdoor heat exchanger is located is provided with a branch control valve that can control the flow of refrigerant flowing through the parallel branches ; And a supplementary gas pipe group, which is used to transfer part of the refrigerant in the main circulation flow path of the refrigerant to the supplemental gas port of the compressor to supplement the compressor.
  • the supplemental gas pipe group includes a supplemental gas pipeline, a supplemental gas heat exchanger and a supplemental gas control valve 14.
  • the two ends of the supplementary gas pipeline are respectively connected to the refrigerant main circulation pipeline and the compressor air supply port, and the two heat exchange chambers of the supplementary air heat exchanger are respectively connected in series to the refrigerant main circulation pipeline and the supplementary air pipeline.
  • the gas control valve 14 is used to control the flow rate of the refrigerant that supplements the compressor.
  • the multi-connected air conditioner 1 may be provided with temperature sensors at both ends of the pipeline to detect the temperature at both ends of the pipeline, thereby obtaining the current superheat degree of the multi-connected air conditioner 1.
  • the air conditioner further includes a pipe section disposed on the pipeline section before the supplemental gas heat exchanger of the supplemental gas pipeline, and used to obtain the first supplementary refrigerant temperature in the supplemental gas pipeline before the supplemental gas heat exchanger performs heat exchange.
  • the first supplementary refrigerant temperature may be the refrigerant temperature in the supplementary gas pipeline before the supplemental gas heat exchanger performs heat exchange
  • the second supplementary refrigerant temperature may be the supplementary gas pipeline in the supplemental gas heat exchanger.
  • Refrigerant temperature after heat exchange The absolute value of the difference between the temperature of the first supplemental refrigerant and the temperature of the second supplemental refrigerant is the superheat degree of the supplemental gas line.
  • the absolute value of the difference between the temperature of the first supplemental refrigerant in the supplemental gas pipeline before the supplemental heat exchanger performs heat exchange and the temperature of the second supplemental refrigerant after the supplemental heat exchanger performs heat exchange is greater than
  • the preset threshold range indicates that the degree of superheat is too high and the refrigerant circulation line needs to be supplemented with air.
  • the controller 13 controls the supplemental air control valve 14 to open.
  • the absolute value of the difference between the temperature of the first supplemental refrigerant in the supplemental gas line before the supplemental heat exchanger performs heat exchange and the temperature of the second supplemental refrigerant after the supplemental heat exchanger performs heat exchange is less than
  • the preset threshold range indicates that the degree of superheat is too small and the refrigerant circulation line does not need to be supplemented with air.
  • the controller 13 controls the supplemental air control valve 14 to close.
  • Fig. 6 is a schematic flowchart of a method for controlling an air conditioner of the present disclosure according to another exemplary embodiment.
  • the present disclosure also provides another method for controlling the air conditioner.
  • the control method can also correlate the control of the air supplement control valve 14 of each refrigerant flow branch of the multi-connected air conditioner 1 by controlling each supplement
  • the opening degree of the gas control valve 14 adjusts the superheat degree, improves the heat exchange performance, and maximizes the heat exchange capacity of the multi-line air conditioner 1.
  • the main steps of the control method include:
  • the degree of superheat refers to the difference between the superheat temperature and the saturation temperature of the refrigerant under the same evaporating pressure in the refrigeration cycle.
  • the multi-line air conditioner 1 includes a plurality of outdoor heat exchangers connected in parallel to the refrigerant main circulation flow path, and the parallel branch where each outdoor heat exchanger is located is provided with a branch control valve that can control the flow of refrigerant flowing through the parallel branches ; And a supplementary gas pipe group, which is used to transfer part of the refrigerant in the main circulation flow path of the refrigerant to the supplemental gas port of the compressor to supplement the compressor.
  • the supplemental gas pipe group includes a supplemental gas pipeline, a supplemental gas heat exchanger and a supplemental gas control valve 14.
  • the two ends of the supplementary gas pipeline are respectively connected to the refrigerant main circulation pipeline and the compressor air supply port, and the two heat exchange chambers of the supplementary air heat exchanger are respectively connected in series to the refrigerant main circulation pipeline and the supplementary air pipeline.
  • the gas control valve 14 is used to control the flow rate of the refrigerant that supplements the compressor.
  • the multi-connected air conditioner 1 may be provided with temperature sensors at both ends of the pipeline to detect the temperature at both ends of the pipeline, thereby obtaining the current superheat degree of the multi-connected air conditioner 1.
  • the air conditioner further includes a pipe section disposed on the pipeline section before the supplemental gas heat exchanger of the supplemental gas pipeline, and used to obtain the first supplementary refrigerant temperature in the supplemental gas pipeline before the supplemental gas heat exchanger performs heat exchange.
  • S603 Calculate the absolute value of the difference between the temperature of the first supplemental refrigerant and the temperature of the second supplemental refrigerant;
  • the first supplementary refrigerant temperature may be the refrigerant temperature in the supplementary gas pipeline before the supplemental gas heat exchanger performs heat exchange
  • the second supplementary refrigerant temperature may be the supplementary gas pipeline in the supplemental gas heat exchanger.
  • Refrigerant temperature after heat exchange The absolute value of the difference between the temperature of the first supplemental refrigerant and the temperature of the second supplemental refrigerant is the superheat of the supplemental gas line.
  • the absolute value of the difference between the temperature of the first supplemental refrigerant in the supplemental gas pipeline before the supplemental heat exchanger performs heat exchange and the temperature of the second supplemental refrigerant after the supplemental heat exchanger performs heat exchange is greater than
  • the preset threshold range indicates that the degree of superheat is too high and the refrigerant circulation line needs to be supplemented with air.
  • the controller 13 controls the supplemental air control valve 14 to open.
  • FIG. 7 is a schematic flowchart of a control method of an air conditioner of the present disclosure according to yet another exemplary embodiment.
  • the present disclosure also provides another control method for an air conditioner.
  • the control method can also correlate the control of the air supplement control valve 14 of each refrigerant flow branch of the multi-connected air conditioner 1 by controlling each supplement
  • the opening degree of the gas control valve 14 adjusts the superheat degree, improves the heat exchange performance, and maximizes the heat exchange capacity of the multi-line air conditioner 1.
  • the main steps of the control method include:
  • the degree of superheat refers to the difference between the superheat temperature and the saturation temperature of the refrigerant under the same evaporating pressure in the refrigeration cycle.
  • the multi-line air conditioner 1 includes a plurality of outdoor heat exchangers connected in parallel to the refrigerant main circulation flow path, and the parallel branch where each outdoor heat exchanger is located is provided with a branch control valve that can control the flow of refrigerant flowing through the parallel branches ; And a supplementary gas pipe group, which is used to transfer part of the refrigerant in the main circulation flow path of the refrigerant to the supplemental gas port of the compressor to supplement the compressor.
  • the supplemental gas pipe group includes a supplemental gas pipeline, a supplemental gas heat exchanger and a supplemental gas control valve 14.
  • the two ends of the supplementary gas pipeline are respectively connected to the refrigerant main circulation pipeline and the compressor air supply port, and the two heat exchange chambers of the supplementary air heat exchanger are respectively connected in series to the refrigerant main circulation pipeline and the supplementary air pipeline.
  • the gas control valve 14 is used to control the flow rate of the refrigerant that supplements the compressor.
  • the multi-connected air conditioner 1 may be provided with temperature sensors at both ends of the pipeline to detect the temperature at both ends of the pipeline, thereby obtaining the current superheat degree of the multi-connected air conditioner 1.
  • the air conditioner further includes a pipe section disposed on the pipeline section before the supplemental gas heat exchanger of the supplemental gas pipeline, and used to obtain the first supplementary refrigerant temperature in the supplemental gas pipeline before the supplemental gas heat exchanger performs heat exchange.
  • the first supplementary refrigerant temperature may be the refrigerant temperature in the supplementary gas pipeline before the supplemental gas heat exchanger performs heat exchange
  • the second supplementary refrigerant temperature may be the supplementary gas pipeline in the supplemental gas heat exchanger.
  • Refrigerant temperature after heat exchange The absolute value of the difference between the temperature of the first supplemental refrigerant and the temperature of the second supplemental refrigerant is the superheat degree of the supplemental gas line.
  • the absolute value of the difference between the temperature of the first supplemental refrigerant in the supplemental gas line before the supplemental heat exchanger performs heat exchange and the temperature of the second supplemental refrigerant after the supplemental heat exchanger performs heat exchange is less than
  • the preset threshold range indicates that the degree of superheat is too small and the refrigerant circulation line does not need to be supplemented with air.
  • the controller 13 controls the supplemental air control valve 14 to close.
  • Fig. 8 is a schematic diagram showing the overall structure of the air conditioner 1 of the present disclosure according to an exemplary embodiment.
  • the present disclosure also provides an air conditioner 11 that can be applied to perform the control steps of the embodiment corresponding to FIG. 1 above; specifically, the multi-line air conditioner 1 includes a plurality of main circuits connected in parallel to the refrigerant
  • the outdoor heat exchanger of the flow path, the parallel branch where each outdoor heat exchanger is located is provided with a branch control valve that can control the flow of refrigerant flowing through the parallel branch; and a supplemental air pipe group, which is used to flow the main circulation of the refrigerant Part of the refrigerant is sent to the air supply port of the compressor to replenish the compressor.
  • the air replenishment pipe group includes a replenishment pipeline, a replenishment heat exchanger, and a replenishment control valve 14, wherein the two ends of the replenishment pipeline are respectively connected to the refrigerant
  • the main circulation flow path and the air supply port of the compressor, the two heat exchange chambers of the air supply heat exchanger are connected in series to the refrigerant main circulation line and the air supply line, and the air supply control valve 14 is used to control the air supply to the compressor Refrigerant flow; also includes controller 13 for:
  • the refrigerant flow rate of the branch control valve is controlled and adjusted so that the current superheat reaches the set target superheat;
  • the refrigerant flow rate of the supplemental air control valve 14 is controlled and adjusted according to the refrigerant flow rate of each branch control valve.
  • the multi-connected air conditioner 1 may be provided with temperature sensors at both ends of the pipeline to detect the temperature at both ends of the pipeline, thereby obtaining the current superheat degree of the multi-connected air conditioner 1.
  • the air conditioner is provided with a controller 13, which can set the target superheat degree in advance.
  • the target superheat degree is not limited here, and may be 1 degree.
  • the controller 13 can control and adjust the refrigerant flow rate of the branch control valve, and adjust the temperature at both ends of the pipeline by changing the refrigerant flow rate of each branch, so that the current superheat degree is adjusted to reach the set target superheat degree.
  • the multi-connected air conditioner 1 has a controller 13 that can be used to calculate the sum of refrigerant flow of each branch control valve, and adjust the refrigerant flow of the supplementary air control valve 14 according to the refrigerant flow of each branch control valve Control, when the sum of the refrigerant flow of each branch control valve is less than the preset refrigerant flow parameter, the controller 13 opens the supplemental gas control valve 14; when the sum of the refrigerant flow of each branch control valve is greater than or equal to the preset refrigerant When the flow rate parameter is reached, the controller 13 closes the supplemental gas control valve 14.
  • the multi-connected air conditioner 1 has a controller 13 that can control the flow opening degree of the supplemental air control valve 14 according to the negative value of the sum of the refrigerant flow rates of the control valves of each branch.
  • the controller 13 opens the supplemental gas control valve 14; when the sum of the refrigerant flow of each branch control valve is greater than or equal to the preset refrigerant flow parameter , The controller 13 closes the supplemental gas control valve 14.
  • the multi-connected air conditioner 1 may also have a controller 13, and the control valves of each branch may be directly connected to the controller 13, and the controller 13 may directly control the refrigerant flow of each branch control valve.
  • the controller 13 may directly control and increase the refrigerant flow rate of one of the branch control valves.
  • the multi-connected air conditioner 1 may also have a controller 13, and the control valves of each branch may be directly connected to the controller 13.
  • the controller 13 may Direct control to increase the flow of multiple refrigerants in each branch control valve.
  • the multiple control branches are the control branches, which are not limited here. Each control branch is connected in parallel, which is equivalent to the flow distribution of refrigerant flow. of.
  • the multi-connected air conditioner 1 may also have a controller 13, and the control valves of each branch may be directly connected to the controller 13, and the controller 13 may directly control the refrigerant flow of each branch control valve.
  • the controller 13 can directly control and reduce the refrigerant flow rate of one of the branch control valves.
  • the multi-connected air conditioner 1 may also have a controller 13, and the control valves of each branch may be directly connected to the controller 13.
  • the controller 13 may directly control Reducing the flow of multiple refrigerants in the control valves of each branch.
  • the multiple control branches are the control branches, which are not limited here. Each control branch is connected in parallel, and the splitting effect on the flow of refrigerant is equivalent.
  • the air conditioner further includes a pipe section disposed on the pipeline section before the supplemental gas heat exchanger of the supplemental gas pipeline, and used to obtain the first supplementary refrigerant temperature in the supplemental gas pipeline before the supplemental gas heat exchanger performs heat exchange.
  • the first supplementary refrigerant temperature may be the refrigerant temperature in the supplementary gas pipeline before the supplemental gas heat exchanger performs heat exchange
  • the second supplementary refrigerant temperature may be the supplementary gas pipeline in the supplemental gas heat exchanger.
  • Refrigerant temperature after heat exchange The absolute value of the difference between the temperature of the first supplemental refrigerant and the temperature of the second supplemental refrigerant is the superheat degree of the supplemental gas line.
  • the absolute value of the difference between the temperature of the first supplemental refrigerant in the supplemental gas pipeline before the supplemental heat exchanger performs heat exchange and the temperature of the second supplemental refrigerant after the supplemental heat exchanger performs heat exchange is greater than
  • the preset threshold range indicates that the degree of superheat is too high and the refrigerant circulation line needs to be supplemented with air.
  • the controller 13 controls the supplemental air control valve 14 to open.
  • the absolute value of the difference between the temperature of the first supplemental refrigerant in the supplemental gas line before the supplemental heat exchanger performs heat exchange and the temperature of the second supplemental refrigerant after the supplemental heat exchanger performs heat exchange is less than
  • the preset threshold range indicates that the degree of superheat is too small and the refrigerant circulation line does not need to be supplemented with air.
  • the controller 13 controls the supplemental air control valve 14 to close.
  • control of the supplemental air control valve 14 of each refrigerant flow branch of the multi-connected air conditioner 1 can be related to each other, and the degree of superheat can be adjusted by controlling the opening degree of each supplemental air control valve 14 to improve the heat exchange performance and make the multi-connected The heat exchange capacity of the air conditioner 1 is maximized.
  • a computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are configured to execute the control method of the multi-line air conditioner described above.
  • a computer program product includes a computer program stored on a computer-readable storage medium.
  • the computer program includes program instructions. When the program instructions are executed by a computer, The computer is caused to execute the control method of the above multi-line air conditioner.
  • the aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.
  • An embodiment of the present disclosure provides an electronic device, whose structure is shown in FIG. 9, the electronic device includes:
  • At least one processor (processor) 900, one processor 900 is taken as an example in FIG. 9; and the memory (memory) 901 may further include a communication interface (Communication Interface) 902 and a bus 903.
  • the processor 900, the communication interface 902, and the memory 901 can complete communication with each other through the bus 903.
  • the communication interface 902 can be used for information transmission.
  • the processor 900 may call logical instructions in the memory 901 to perform the method in the above-mentioned embodiments.
  • logic instructions in the aforementioned memory 901 may be implemented in the form of software functional units and sold or used as independent products, and may be stored in a computer-readable storage medium.
  • the memory 901 is a computer-readable storage medium that can be used to store software programs and computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure.
  • the processor 900 executes functional applications and data processing by running software programs, instructions, and modules stored in the memory 901, that is, implementing the methods in the foregoing method embodiments.
  • the memory 901 may include a storage program area and a storage data area, where the storage program area may store an operating system and application programs required by at least one function; the storage data area may store data created according to the use of a terminal device and the like.
  • the memory 901 may include a high-speed random access memory, and may also include a non-volatile memory.
  • the technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions to make a computer device (which may be a personal computer, server, or network) Equipment, etc.) to perform all or part of the steps of the method described in the embodiments of the present disclosure.
  • the aforementioned storage medium may be a non-transitory storage medium, including: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc.
  • a medium that can store program codes may also be a transient storage medium.
  • the first element can be called the second element, and likewise, the second element can be called the first element, as long as all occurrences of the "first element” are consistently renamed and all occurrences of The "second component” can be renamed consistently.
  • the first element and the second element are both elements, but they may not be the same element.
  • the terms used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms "a”, “an” and “said” are intended to also include the plural form .
  • the term “and/or” as used in this application is meant to include any and all possible combinations of one or more associated lists.
  • the term “comprise” and its variations “comprises” and/or includes etc. refer to the stated features, wholes, steps, operations, elements, and/or The presence of components does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and/or groups of these. Without more restrictions, the element defined by the sentence “including one" does not exclude that there are other identical elements in the process, method, or equipment that includes the element.
  • each embodiment may focus on differences from other embodiments, and the same or similar parts between the various embodiments may refer to each other. For the method, product, etc. disclosed in the embodiments, if it corresponds to the method part disclosed in the embodiment, the relevant part can be referred to the description in the method part.
  • the disclosed methods and products may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit may be only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined Or it can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.
  • each functional unit in the embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • each block in the flowchart or block diagram may represent a module, program segment, or part of code that contains one or more of the Executable instructions.
  • the functions marked in the blocks may also occur in an order different from that marked in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can also be executed in reverse order, depending on the functions involved.
  • the operations or steps corresponding to different blocks may also occur in an order different from that disclosed in the description, and sometimes there is no specific between operations or steps. order.

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Abstract

本申请公开了一种多联机空调及其控制方法，属于空调技术领域。多联机空调包括多个并联连接于冷媒主循环流路的室外换热器；每一室外换热器所处的并联支路设有可控制流经并联支路的冷媒流量的支路控制阀；控制方法包括：确定多联机空调的当前过热度；当多联机的当前过热度偏离设定的目标过热度时，控制调节支路控制阀的冷媒流量，以使当前过热度达到设定的目标过热度；根据各个支路控制阀的冷媒流量，控制调节补气控制阀的冷媒流量。本公开提供的多联机空调控制方法能够使多联机空调的各冷媒流量支路的补气控制阀的控制相互关联，通过控制各补气控制阀的开度来调节过热度，提高换热性能，使该多联机空调的换热能力最大发挥。

Description

一种多联机空调及其控制方法
本申请基于申请号为201910023902.X、申请日为2019.01.10的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及空调技术领域，例如涉及一种多联机空调及其控制方法。
背景技术
多联机空调是由两个或多个室内机组通过管道连接到一台室外机上。多联机空调是中央空调的一种，其适应性比一般的中央空调机组更好，温度调节范围更广。
目前的多联机空调通过调节阀来控制补气回路的开度，继而调节过热度，而多联机具有多条并联补气回路。
在实现本公开实施例的过程中，发现相关技术中至少存在如下问题：
现有技术通过分别单独控制补气回路的开度来调节过热度，彼此间没有关联控制，使换热器的换热能力不能最大发挥。
发明内容
为了对披露的实施例的一些方面有基本的理解，下面给出了简单的概括。所述概括不是泛泛评述，也不是要确定关键/重要组成元素或描绘这些实施例的保护范围，而是作为后面的详细说明的序言。
本公开实施例提供了一种多联机空调的控制方法。
在一些实施例中，多联机空调包括多个并联连接于冷媒主循环流路的室外换热器，每一室外换热器所处的并联支路设有可控制流经并联支路的冷媒流量的支路控制阀；以及补气管组，用于将冷媒主循环流路的部分冷媒输送至压缩机的补气口以对压缩机进行补气，补气管组包括补气管路、补气换热器和补气控制阀，其中，补气管路的两端分别连接冷媒主循环管路和压缩机的补气口，补气换热器的两个热交换腔分别串接于冷媒主循环 管路和补气管路，补气控制阀用于控制向压缩机进行补气的冷媒流量；控制方法包括：
确定多联机空调的当前过热度；
当多联机的当前过热度偏离设定的目标过热度时，控制调节支路控制阀的冷媒流量，以使当前过热度达到设定的目标过热度；
根据各个支路控制阀的冷媒流量，控制调节补气控制阀的冷媒流量。
本公开实施例提供了一种多联机空调。
在一些实施例中，所述多联机空调包括多个并联连接于冷媒主循环流路的室外换热器，每一室外换热器所处的并联支路设有可控制流经并联支路的冷媒流量的支路控制阀；以及补气管组，用于将冷媒主循环流路的部分冷媒输送至压缩机的补气口以对压缩机进行补气，补气管组包括补气管路、补气换热器和补气控制阀，其中，补气管路的两端分别连接冷媒主循环管路和压缩机的补气口，补气换热器的两个热交换腔分别串接于冷媒主循环管路和补气管路，补气控制阀用于控制向压缩机进行补气的冷媒流量；还包括控制器，用于：
确定多联机空调的当前过热度；
当多联机的当前过热度偏离设定的目标过热度时，控制调节支路控制阀的冷媒流量，以使当前过热度达到设定的目标过热度；
根据各个支路控制阀的冷媒流量，控制调节补气控制阀的冷媒流量。
本公开实施例提供了一种电子设备。
在一些实施例中，所述电子设备包括：
至少一个处理器；和
与所述至少一个处理器通信连接的存储器；其中，
所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行时，使所述至少一个处理器执行上述的多联机空调的控制方法。
本公开实施例提供了一种计算机可读存储介质。
在一些实施例中，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令设置为执行上述的多联机空调的控制方法。
本公开实施例提供了一种计算机程序产品。
在一些实施例中，所述计算机程序产品包括存储在计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时，使所述计算机执行上述的多联机空调的控制方法。
本公开实施例提供的一些技术方案可以实现以下技术效果：
本公开提供的空调控制方法能够使多联机空调的各冷媒流量支路的补气控制阀的控制相互关联，通过控制各补气控制阀的开度来调节过热度，提高换热性能，使该多联机空调的换热能力最大发挥。
以上的总体描述和下文中的描述仅是示例性和解释性的，不用于限制本申请。
附图说明
一个或多个实施例通过与之对应的附图进行示例性说明，这些示例性说明和附图并不构成对实施例的限定，附图中具有相同参考数字标号的元件示为类似的元件，附图不构成比例限制，并且其中：
[根据细则91更正 14.06.2019]　
图1是本公开实施例提供的本公开空调的控制方法的流程示意图；
图2是本公开实施例提供的本公开空调的控制方法的流程示意图；
图3是本公开实施例提供的本公开空调的控制方法的流程示意图；
图4是本公开实施例提供的本公开空调的控制方法的流程示意图；
图5是本公开实施例提供的本公开空调的控制方法的流程示意图；
图6是本公开实施例提供的本公开空调的控制方法的流程示意图；
图7是本公开实施例提供的本公开空调的控制方法的流程示意图；
图8是本公开实施例提供的本公开空调的整体结构示意图；
图9是本公开实施例提供的电子设备的结构示意图。
附图标记说明：
1：多联机空调；121：第一传感器；122：第二传感器；13：控制器；14：补气控制阀。
具体实施方式
为了能够更加详尽地了解本公开实施例的特点与技术内容，下面结合附图对本公开实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本公开实施例。在以下的技术描述中，为方便解释起见，通过多个细节以提供对所披露实施例的充分理解。然而，在没有这些细节的情况下，一个或多个实施例仍然可以实施。在其它情况下，为简化附图，熟知的结构和装置可以简化展示。
图1是根据一示例性实施例所示出的本公开空调的控制方法的流程示意图。
如图1所示，本公开提供了一种空调的控制方法，该控制方法可以使多联机空调1的各冷媒流量支路的补气控制阀14的控制相互关联，通过控制各补气控制阀14的开度来调节过热度，提高换热性能，使该多联机空调1的换热能力最大发挥。具体的，该控制方法的主要步骤包括：
S101、确定多联机空调1的当前过热度；
可选地，过热度是指制冷循环中相同蒸发压力下制冷剂的过热温度与饱和温度之差。多联机空调1包括多个并联连接于冷媒主循环流路的室外换热器，每一室外换热器所处的并联支路设有可控制流经并联支路的冷媒流量的支路控制阀；以及补气管组，用于将冷媒主循环流路的部分冷媒输送至压缩机的补气口以对压缩机进行补气，补气管组包括补气管路、补气换热器和补气控制阀14，其中，补气管路的两端分别连接冷媒主循环管路和压缩机的补气口，补气换热器的两个热交换腔分别串接于冷媒主循环管路和补气管路，补气控制阀14用于控制向压缩机进行补气的冷媒流量。
可选地，多联机空调1可以在管路两端设置温度传感器，检测管路两端的温度，从而，获得多联机空调1的当前过热度。
S102、多联机的当前过热度偏离设定的目标过热度时，控制调节支路控制阀的冷媒流量，以使当前过热度达到设定的目标过热度；
可选地，空调设有控制器13，可以预先设定目标过热度，这里对目标过热度不作限定，可以为1度，当多联机空调1测得的当前过热度大于或者小于1度时，控制器13可以控制调节支路控制阀的冷媒流量，通过改变各支路的冷媒流量调节了管路两端的温度，使当前的过热度得到调节，达到设定的目标过热度。
S103、根据各个支路控制阀的冷媒流量，控制调节补气控制阀14的冷媒流量。
可选地，空调设有控制器13，可以控制补气控制阀14，补气控制阀14可以控制冷媒的流量，各支路控制阀控制该支路的冷媒流量，各个补气控制阀14之间具有关联关系。
图2是根据又一示例性实施例所示出的本公开空调的控制方法的流程示意图。
如图2所示，本公开还提供了又一种空调的控制方法，该控制方法也可以使多联机空调1的各冷媒流量支路的补气控制阀14的控制相互关联，通过控制各补气控制阀14的开度来调节过热度，提高换热性能，使该多联机空调1的换热能力最大发挥。具体的，该控制方法的主要步骤包括：
S201、确定多联机空调1的当前过热度；
可选地，过热度是指制冷循环中相同蒸发压力下制冷剂的过热温度与饱和温度之差。多联机空调1包括多个并联连接于冷媒主循环流路的室外换热器，每一室外换热器所处的并联支路设有可控制流经并联支路的冷媒流量的支路控制阀；以及补气管组，用于将冷媒主循环流路的部分冷媒输送至压缩机的补气口以对压缩机进行补气，补气管组包括补气管路、补气换热器和补气控制阀14，其中，补气管路的两端分别连接冷媒主循环管路和压缩机的补气口，补气换热器的两个热交换腔分别串接于冷媒主循环管路和补气管路，补气控制阀14用于控制向压缩机进行补气的冷媒流量。
可选地，多联机空调1可以在管路两端设置温度传感器，检测管路两端的温度，从而，获得多联机空调1的当前过热度。
S202、多联机的当前过热度偏离设定的目标过热度时，控制调节支路控制阀的冷媒流量，以使当前过热度达到设定的目标过热度；
可选地，空调设有控制器13，可以预先设定目标过热度，这里对目标过热度不作限定，可以为1度，当多联机空调1测得的当前过热度大于或者小于1度时，控制器13可以控制调节支路控制阀的冷媒流量，通过改变各支路的冷媒流量调节了管路两端的温度，使当前的过热度得到调节，达到设定的目标过热度。
S203、计算各个支路控制阀的冷媒流量之和；
可选地，多联机空调1具有控制器13，控制器13可以用于计算各个支路控制阀的冷媒流量之和，根据各个支路控制阀的冷媒流量，调整补气控制阀14对冷媒流量的控制，当各个支路控制阀的冷媒流量之和小于预设冷媒流量参数时，控制器13将补气控制阀14开启；当各个支路控制阀的冷媒流量之和大于或等于预设冷媒流量参数时，控制器13将补气控制阀14关闭。
S204、控制补气控制阀14以冷媒流量之和的负值进行调整流量开度；
可选地，多联机空调1具有控制器13，控制器13可以根据各个支路控制阀的冷媒流量之和的负值，控制补气控制阀14的流量开度。当各个支路控制阀的冷媒流量之和小于预设冷媒流量参数时，控制器13将补气控制阀14开启；当各个支路控制阀的冷媒流量之和大于或等于预设冷媒流量参数时，控制器13将补气控制阀14关闭。
图3是根据又一示例性实施例所示出的本公开空调的控制方法的流程示意图。
如图3所示，本公开还提供了又一种空调的控制方法，该控制方法也可以使多联机空调1的各冷媒流量支路的补气控制阀14的控制相互关联，通过控制各补气控制阀14的开度来调节过热度，提高换热性能，使该多联机空调1的换热能力最大发挥。具体的，该控制方法的主要步骤包括：
S301、确定多联机空调1的当前过热度；
可选地，过热度是指制冷循环中相同蒸发压力下制冷剂的过热温度与饱和温度之差。多联机空调1包括多个并联连接于冷媒主循环流路的室外换热器，每一室外换热器所处的并联支路设有可控制流经并联支路的冷媒流量的支路控制阀；以及补气管组，用于将冷媒主循环流路的部分冷媒输送至压缩机的补气口以对压缩机进行补气，补气管组包括补气管路、补气换热器和补气控制阀14，其中，补气管路的两端分别连接冷媒主循环管路和压缩机的补气口，补气换热器的两个热交换腔分别串接于冷媒主循环管路和补气管路，补气控制阀14用于控制向压缩机进行补气的冷媒流量。
可选地，多联机空调1可以在管路两端设置温度传感器，检测管路两端的温度，从而，获得多联机空调1的当前过热度。
S302、当多联机空调1的当前过热度大于或等于目标过热度时，控制 提高各个支路控制阀中的一个或多个的冷媒流量；
可选地，多联机空调1还可以具有控制器13，各个支路的控制阀可以与控制器13直接相连，控制器13可以直接控制各个支路控制阀的冷媒流量。当多联机空调1的当前过热度大于或者等于目标过热度时，控制器13可以直接控制提高各个支路控制阀中的一个的冷媒流量。
可选地，多联机空调1还可以具有控制器13，各个支路的控制阀可以与控制器13直接相连，当多联机空调1的当前过热度大于或者等于目标过热度时，控制器13可以直接控制提高各个支路控制阀中的多个的冷媒流量，多个控制支路为那几个控制支路，这里不做限定，各控制支路并联连接，对于冷媒流量的分流作用是等效的。
S303、根据各个支路控制阀的冷媒流量，控制调节补气控制阀14的冷媒流量。
可选地，空调设有控制器13，可以控制补气控制阀14，补气控制阀14可以控制冷媒的流量，各支路控制阀控制该支路的冷媒流量，各个补气控制阀14之间具有关联关系。
图4是根据又一示例性实施例所示出的本公开空调的控制方法的流程示意图。
如图4所示，本公开还提供了又一种空调的控制方法，该控制方法也可以使多联机空调1的各冷媒流量支路的补气控制阀14的控制相互关联，通过控制各补气控制阀14的开度来调节过热度，提高换热性能，使该多联机空调1的换热能力最大发挥。具体的，该控制方法的主要步骤包括：
S401、确定多联机空调1的当前过热度；
可选地，过热度是指制冷循环中相同蒸发压力下制冷剂的过热温度与饱和温度之差。多联机空调1包括多个并联连接于冷媒主循环流路的室外换热器，每一室外换热器所处的并联支路设有可控制流经并联支路的冷媒流量的支路控制阀；以及补气管组，用于将冷媒主循环流路的部分冷媒输送至压缩机的补气口以对压缩机进行补气，补气管组包括补气管路、补气换热器和补气控制阀14，其中，补气管路的两端分别连接冷媒主循环管路和压缩机的补气口，补气换热器的两个热交换腔分别串接于冷媒主循环管路和补气管路，补气控制阀14用于控制向压缩机进行补气的冷媒流量。
可选地，多联机空调1可以在管路两端设置温度传感器，检测管路两端的温度，从而，获得多联机空调1的当前过热度。
S402、当多联机空调1的当前过热度小于目标过热度时，控制降低各个支路控制阀中的一个或多个的冷媒流量；
可选地，多联机空调1还可以具有控制器13，各个支路的控制阀可以与控制器13直接相连，控制器13可以直接控制各个支路控制阀的冷媒流量。当多联机空调1的当前过热度小于目标过热度时，控制器13可以直接控制降低各个支路控制阀中的一个的冷媒流量。
可选地，多联机空调1还可以具有控制器13，各个支路的控制阀可以与控制器13直接相连，当多联机空调1的当前过热度小于目标过热度时，控制器13可以直接控制降低各个支路控制阀中的多个的冷媒流量，多个控制支路为那几个控制支路，这里不做限定，各控制支路并联连接，对于冷媒流量的分流作用是等效的。
S403、根据各个支路控制阀的冷媒流量，控制调节补气控制阀14的冷媒流量。
可选地，空调设有控制器13，可以控制补气控制阀14，补气控制阀14可以控制冷媒的流量，各支路控制阀控制该支路的冷媒流量，各个补气控制阀14之间具有关联关系。
图5是根据又一示例性实施例所示出的本公开空调的控制方法的流程示意图。
如图5所示，本公开还提供了又一种空调的控制方法，该控制方法也可以使多联机空调1的各冷媒流量支路的补气控制阀14的控制相互关联，通过控制各补气控制阀14的开度来调节过热度，提高换热性能，使该多联机空调1的换热能力最大发挥。具体的，该控制方法的主要步骤包括：
S501、确定多联机空调1的当前过热度；
可选地，过热度是指制冷循环中相同蒸发压力下制冷剂的过热温度与饱和温度之差。多联机空调1包括多个并联连接于冷媒主循环流路的室外换热器，每一室外换热器所处的并联支路设有可控制流经并联支路的冷媒流量的支路控制阀；以及补气管组，用于将冷媒主循环流路的部分冷媒输送至压缩机的补气口以对压缩机进行补气，补气管组包括补气管路、补气 换热器和补气控制阀14，其中，补气管路的两端分别连接冷媒主循环管路和压缩机的补气口，补气换热器的两个热交换腔分别串接于冷媒主循环管路和补气管路，补气控制阀14用于控制向压缩机进行补气的冷媒流量。
可选地，多联机空调1可以在管路两端设置温度传感器，检测管路两端的温度，从而，获得多联机空调1的当前过热度。
S502、当多联机的当前过热度达到设定的目标过热度时，获取补气管路中在补气换热器进行换热之前的第一补气冷媒温度和在补气换热器进行换热之后的第二补气冷媒温度；
可选地，空调还包括设置于补气管路的补气换热器之前的管路段上，用于获取补气管路中在补气换热器进行换热之前的第一补气冷媒温度的第一传感器121；和设置于补气管路的补气换热器之后的管路段上，用于获取补气管路中在补气换热器进行换热之后的第二补气冷媒温度的第二传感器122；还包括用于当多联机的当前过热度达到设定的目标过热度时，基于第一补气冷媒温度和第二补气冷媒温度，确定补气控制阀14的开闭状态的控制器13。
S503、基于第一补气冷媒温度和第二补气冷媒温度，确定补气控制阀14的开闭状态。
可选地，第一补气冷媒温度可以为获取补气管路中在补气换热器进行换热之前的冷媒温度，第二补气冷媒温度可以为补气管路中在补气换热器进行换热之后的冷媒温度。第一补气冷媒温度和第二补气冷媒温度的差值绝对值即为补气管路的过热度。
可选地，当补气管路中在补气换热器进行换热之前的第一补气冷媒温度和在补气换热器进行换热之后的第二补气冷媒温度的差值绝对值大于预设的阈值范围区间时，说明过热度偏大，冷媒循环管路需要补气，控制器13控制补气控制阀14开启。
可选地，当补气管路中在补气换热器进行换热之前的第一补气冷媒温度和在补气换热器进行换热之后的第二补气冷媒温度的差值绝对值小于预设的阈值范围区间时，说明过热度偏小，冷媒循环管路不需要补气，控制器13控制补气控制阀14关闭。
图6是根据又一示例性实施例所示出的本公开空调的控制方法的流程 示意图。
如图6所示，本公开还提供了又一种空调的控制方法，该控制方法也可以使多联机空调1的各冷媒流量支路的补气控制阀14的控制相互关联，通过控制各补气控制阀14的开度来调节过热度，提高换热性能，使该多联机空调1的换热能力最大发挥。具体的，该控制方法的主要步骤包括：
S601、确定多联机空调1的当前过热度；
可选地，过热度是指制冷循环中相同蒸发压力下制冷剂的过热温度与饱和温度之差。多联机空调1包括多个并联连接于冷媒主循环流路的室外换热器，每一室外换热器所处的并联支路设有可控制流经并联支路的冷媒流量的支路控制阀；以及补气管组，用于将冷媒主循环流路的部分冷媒输送至压缩机的补气口以对压缩机进行补气，补气管组包括补气管路、补气换热器和补气控制阀14，其中，补气管路的两端分别连接冷媒主循环管路和压缩机的补气口，补气换热器的两个热交换腔分别串接于冷媒主循环管路和补气管路，补气控制阀14用于控制向压缩机进行补气的冷媒流量。
可选地，多联机空调1可以在管路两端设置温度传感器，检测管路两端的温度，从而，获得多联机空调1的当前过热度。
S602、当多联机的当前过热度达到设定的目标过热度时，获取补气管路中在补气换热器进行换热之前的第一补气冷媒温度和在补气换热器进行换热之后的第二补气冷媒温度；
可选地，空调还包括设置于补气管路的补气换热器之前的管路段上，用于获取补气管路中在补气换热器进行换热之前的第一补气冷媒温度的第一传感器121；和设置于补气管路的补气换热器之后的管路段上，用于获取补气管路中在补气换热器进行换热之后的第二补气冷媒温度的第二传感器122；还包括用于当多联机的当前过热度达到设定的目标过热度时，基于第一补气冷媒温度和第二补气冷媒温度，确定补气控制阀14的开闭状态的控制器13。
S603、计算第一补气冷媒温度和第二补气冷媒温度的差值绝对值；
可选地，第一补气冷媒温度可以为获取补气管路中在补气换热器进行换热之前的冷媒温度，第二补气冷媒温度可以为补气管路中在补气换热器进行换热之后的冷媒温度。第一补气冷媒温度和第二补气冷媒温度的差值 绝对值即为补气管路的过热度。
S604、当差值绝对值大于预设的阈值区间时，控制补气控制阀14为开启状态。
可选地，当补气管路中在补气换热器进行换热之前的第一补气冷媒温度和在补气换热器进行换热之后的第二补气冷媒温度的差值绝对值大于预设的阈值范围区间时，说明过热度偏大，冷媒循环管路需要补气，控制器13控制补气控制阀14开启。
图7是根据又一示例性实施例所示出的本公开空调的控制方法的流程示意图。
如图7所示，本公开还提供了又一种空调的控制方法，该控制方法也可以使多联机空调1的各冷媒流量支路的补气控制阀14的控制相互关联，通过控制各补气控制阀14的开度来调节过热度，提高换热性能，使该多联机空调1的换热能力最大发挥。具体的，该控制方法的主要步骤包括：
S701、确定多联机空调1的当前过热度；
可选地，过热度是指制冷循环中相同蒸发压力下制冷剂的过热温度与饱和温度之差。多联机空调1包括多个并联连接于冷媒主循环流路的室外换热器，每一室外换热器所处的并联支路设有可控制流经并联支路的冷媒流量的支路控制阀；以及补气管组，用于将冷媒主循环流路的部分冷媒输送至压缩机的补气口以对压缩机进行补气，补气管组包括补气管路、补气换热器和补气控制阀14，其中，补气管路的两端分别连接冷媒主循环管路和压缩机的补气口，补气换热器的两个热交换腔分别串接于冷媒主循环管路和补气管路，补气控制阀14用于控制向压缩机进行补气的冷媒流量。
可选地，多联机空调1可以在管路两端设置温度传感器，检测管路两端的温度，从而，获得多联机空调1的当前过热度。
S702、当多联机的当前过热度达到设定的目标过热度时，获取补气管路中在补气换热器进行换热之前的第一补气冷媒温度和在补气换热器进行换热之后的第二补气冷媒温度；
可选地，空调还包括设置于补气管路的补气换热器之前的管路段上，用于获取补气管路中在补气换热器进行换热之前的第一补气冷媒温度的第一传感器121；和设置于补气管路的补气换热器之后的管路段上，用于获 取补气管路中在补气换热器进行换热之后的第二补气冷媒温度的第二传感器122；还包括用于当多联机的当前过热度达到设定的目标过热度时，基于第一补气冷媒温度和第二补气冷媒温度，确定补气控制阀14的开闭状态的控制器13。
S703、计算第一补气冷媒温度和第二补气冷媒温度的差值绝对值；
可选地，第一补气冷媒温度可以为获取补气管路中在补气换热器进行换热之前的冷媒温度，第二补气冷媒温度可以为补气管路中在补气换热器进行换热之后的冷媒温度。第一补气冷媒温度和第二补气冷媒温度的差值绝对值即为补气管路的过热度。
S704、当差值绝对值小于预设的阈值区间时，控制补气控制阀14为关闭状态。
可选地，当补气管路中在补气换热器进行换热之前的第一补气冷媒温度和在补气换热器进行换热之后的第二补气冷媒温度的差值绝对值小于预设的阈值范围区间时，说明过热度偏小，冷媒循环管路不需要补气，控制器13控制补气控制阀14关闭。
图8是根据一示例性实施例所示出的本公开空调1的整体结构示意图。
如图8所示，本公开还提供了一种空调11，该空调11可应用执行如前文图1对应的实施例的控制步骤；具体的，多联机空调1包括多个并联连接于冷媒主循环流路的室外换热器，每一室外换热器所处的并联支路设有可控制流经并联支路的冷媒流量的支路控制阀；以及补气管组，用于将冷媒主循环流路的部分冷媒输送至压缩机的补气口以对压缩机进行补气，补气管组包括补气管路、补气换热器和补气控制阀14，其中，补气管路的两端分别连接冷媒主循环流路和压缩机的补气口，补气换热器的两个热交换腔分别串接于冷媒主循环管路和补气管路，补气控制阀14用于控制向压缩机进行补气的冷媒流量；还包括控制器13，用于：
确定多联机空调1的当前过热度；
当多联机的当前过热度偏离设定的目标过热度时，控制调节支路控制阀的冷媒流量，以使当前过热度达到设定的目标过热度；
根据各个支路控制阀的冷媒流量，控制调节补气控制阀14的冷媒流量。
可选地，多联机空调1可以在管路两端设置温度传感器，检测管路两 端的温度，从而，获得多联机空调1的当前过热度。
可选地，空调设有控制器13，可以预先设定目标过热度，这里对目标过热度不作限定，可以为1度，当多联机空调1测得的当前过热度大于或者小于1度时，控制器13可以控制调节支路控制阀的冷媒流量，通过改变各支路的冷媒流量调节了管路两端的温度，使当前的过热度得到调节，达到设定的目标过热度。
可选地，多联机空调1具有控制器13，控制器13可以用于计算各个支路控制阀的冷媒流量之和，根据各个支路控制阀的冷媒流量，调整补气控制阀14对冷媒流量的控制，当各个支路控制阀的冷媒流量之和小于预设冷媒流量参数时，控制器13将补气控制阀14开启；当各个支路控制阀的冷媒流量之和大于或等于预设冷媒流量参数时，控制器13将补气控制阀14关闭。
可选地，多联机空调1具有控制器13，控制器13可以根据各个支路控制阀的冷媒流量之和的负值，控制补气控制阀14的流量开度。当各个支路控制阀的冷媒流量之和小于预设冷媒流量参数时，控制器13将补气控制阀14开启；当各个支路控制阀的冷媒流量之和大于或等于预设冷媒流量参数时，控制器13将补气控制阀14关闭。
可选地，多联机空调1还可以具有控制器13，各个支路的控制阀可以与控制器13直接相连，控制器13可以直接控制各个支路控制阀的冷媒流量。当多联机空调1的当前过热度大于或者等于目标过热度时，控制器13可以直接控制提高各个支路控制阀中的一个的冷媒流量。
可选地，多联机空调1还可以具有控制器13，各个支路的控制阀可以与控制器13直接相连，当多联机空调1的当前过热度大于或者等于目标过热度时，控制器13可以直接控制提高各个支路控制阀中的多个的冷媒流量，多个控制支路为那几个控制支路，这里不做限定，各控制支路并联连接，对于冷媒流量的分流作用是等效的。
可选地，多联机空调1还可以具有控制器13，各个支路的控制阀可以与控制器13直接相连，控制器13可以直接控制各个支路控制阀的冷媒流量。当多联机空调1的当前过热度小于目标过热度时，控制器13可以直接控制降低各个支路控制阀中的一个的冷媒流量。
可选地，多联机空调1还可以具有控制器13，各个支路的控制阀可以与控制器13直接相连，当多联机空调1的当前过热度小于目标过热度时，控制器13可以直接控制降低各个支路控制阀中的多个的冷媒流量，多个控制支路为那几个控制支路，这里不做限定，各控制支路并联连接，对于冷媒流量的分流作用是等效的。
可选地，空调还包括设置于补气管路的补气换热器之前的管路段上，用于获取补气管路中在补气换热器进行换热之前的第一补气冷媒温度的第一传感器121；和设置于补气管路的补气换热器之后的管路段上，用于获取补气管路中在补气换热器进行换热之后的第二补气冷媒温度的第二传感器122；还包括用于当多联机的当前过热度达到设定的目标过热度时，基于第一补气冷媒温度和第二补气冷媒温度，确定补气控制阀14的开闭状态的控制器13。
可选地，第一补气冷媒温度可以为获取补气管路中在补气换热器进行换热之前的冷媒温度，第二补气冷媒温度可以为补气管路中在补气换热器进行换热之后的冷媒温度。第一补气冷媒温度和第二补气冷媒温度的差值绝对值即为补气管路的过热度。
可选地，当补气管路中在补气换热器进行换热之前的第一补气冷媒温度和在补气换热器进行换热之后的第二补气冷媒温度的差值绝对值大于预设的阈值范围区间时，说明过热度偏大，冷媒循环管路需要补气，控制器13控制补气控制阀14开启。
可选地，当补气管路中在补气换热器进行换热之前的第一补气冷媒温度和在补气换热器进行换热之后的第二补气冷媒温度的差值绝对值小于预设的阈值范围区间时，说明过热度偏小，冷媒循环管路不需要补气，控制器13控制补气控制阀14关闭。
这样，能够使多联机空调1的各冷媒流量支路的补气控制阀14的控制相互关联，通过控制各补气控制阀14的开度来调节过热度，提高换热性能，使该多联机空调1的换热能力最大发挥。
本公开一实施例中，提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令设置为执行上述的多联机空调的控制方法。
本公开一实施例中，提供一种计算机程序产品，所述计算机程序产品包括存储在计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时，使所述计算机执行上述多联机空调的控制方法。
上述的计算机可读存储介质可以是暂态计算机可读存储介质，也可以是非暂态计算机可读存储介质。
本公开实施例提供了一种电子设备，其结构如图9所示，该电子设备包括：
至少一个处理器(processor)900，图9中以一个处理器900为例；和存储器(memory)901，还可以包括通信接口(Communication Interface)902和总线903。其中，处理器900、通信接口902、存储器901可以通过总线903完成相互间的通信。通信接口902可以用于信息传输。处理器900可以调用存储器901中的逻辑指令，以执行上述实施例中的方法。
此外，上述的存储器901中的逻辑指令可以通过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。
存储器901作为一种计算机可读存储介质，可用于存储软件程序、计算机可执行程序，如本公开实施例中的方法对应的程序指令/模块。处理器900通过运行存储在存储器901中的软件程序、指令以及模块，从而执行功能应用以及数据处理，即实现上述方法实施例中的方法。
存储器901可包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据终端设备的使用所创建的数据等。此外，存储器901可以包括高速随机存取存储器，还可以包括非易失性存储器。
本公开实施例的技术方案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，包括一个或多个指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开实施例所述方法的全部或部分步骤。而前述的存储介质可以是非暂态存储介质，包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等多种 可以存储程序代码的介质，也可以是暂态存储介质。
以上描述和附图充分地示出了本公开的实施例，以使本领域的技术人员能够实践它们。其他实施例可以包括结构的、逻辑的、电气的、过程的以及其他的改变。实施例仅代表可能的变化。除非明确要求，否则单独的部件和功能是可选的，并且操作的顺序可以变化。一些实施例的部分和特征可以被包括在或替换其他实施例的部分和特征。本公开实施例的范围包括权利要求书的整个范围，以及权利要求书的所有可获得的等同物。当用于本申请中时，虽然术语“第一”、“第二”等可能会在本申请中使用以描述各元件，但这些元件不应受到这些术语的限制。这些术语仅用于将一个元件与另一个元件区别开。比如，在不改变描述的含义的情况下，第一元件可以叫做第二元件，并且同样第，第二元件可以叫做第一元件，只要所有出现的“第一元件”一致重命名并且所有出现的“第二元件”一致重命名即可。第一元件和第二元件都是元件，但可以不是相同的元件。而且，本申请中使用的用词仅用于描述实施例并且不用于限制权利要求。如在实施例以及权利要求的描述中使用的，除非上下文清楚地表明，否则单数形式的“一个”(a)、“一个”(an)和“所述”(the)旨在同样包括复数形式。类似地，如在本申请中所使用的术语“和/或”是指包含一个或一个以上相关联的列出的任何以及所有可能的组合。另外，当用于本申请中时，术语“包括”(comprise)及其变型“包括”(comprises)和/或包括(comprising)等指陈述的特征、整体、步骤、操作、元素，和/或组件的存在，但不排除一个或一个以上其它特征、整体、步骤、操作、元素、组件和/或这些的分组的存在或添加。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法或者设备中还存在另外的相同要素。本文中，每个实施例重点说明的可以是与其他实施例的不同之处，各个实施例之间相同相似部分可以互相参见。对于实施例公开的方法、产品等而言，如果其与实施例公开的方法部分相对应，那么相关之处可以参见方法部分的描述。
本领域技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，可以取决于技术方 案的特定应用和设计约束条件。所述技术人员可以对每个特定的应用来使用不同方法以实现所描述的功能，但是这种实现不应认为超出本公开实施例的范围。所述技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
本文所披露的实施例中，所揭露的方法、产品(包括但不限于装置、设备等)，可以通过其它的方式实现。例如，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，可以仅仅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。另外，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，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。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，作为单元显示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网络单元上。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。另外，在本公开实施例中的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。
附图中的流程图和框图显示了根据本公开实施例的系统、方法和计算机程序产品的可能实现的体系架构、功能和操作。在这点上，流程图或框图中的每个方框可以代表一个模块、程序段或代码的一部分，所述模块、程序段或代码的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。在有些作为替换的实现中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个连续的方框实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这可以依所涉及的功能而定。在附图中的流程图和框图所对应的描述中，不同的方框所对应的操作或步骤也可以以不同于描述中所披露的顺序发生，有时不同的操作或步骤之间不存在特定的顺序。例如，两个连续的操作或步骤实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这可以依所涉及的功能而定。框图和/或流程图中的每个方框、以及框图和/或流程图中的方框的组合，可以 用执行规定的功能或动作的专用的基于硬件的系统来实现，或者可以用专用硬件与计算机指令的组合来实现。

Claims (10)

  1. 一种多联机空调的控制方法，其特征在于，所述多联机空调包括多个并联连接于冷媒主循环流路的室外换热器，每一所述室外换热器所处的并联支路设有可控制流经所述并联支路的冷媒流量的支路控制阀；以及补气管组，用于将所述冷媒主循环管路的部分冷媒输送至压缩机的补气口以对所述压缩机进行补气，所述补气管组包括补气管路、补气换热器和补气控制阀，其中，所述补气管路的两端分别连接所述冷媒主循环流路和所述压缩机的补气口，所述补气换热器的两个热交换腔分别串接于所述冷媒主循环管路和所述补气管路，所述补气控制阀用于控制向所述压缩机进行补气的冷媒流量；所述控制方法包括：
    确定所述多联机空调的当前过热度；
    当所述多联机空调的所述当前过热度偏离设定的目标过热度时，控制调节所述支路控制阀的冷媒流量，以使所述当前过热度达到所述设定的目标过热度；
    根据各个所述支路控制阀的冷媒流量，控制调节所述补气控制阀的冷媒流量。
  2. 根据权利要求1所述的控制方法，其特征在于，所述根据各个所述支路控制阀的冷媒流量，控制调节所述补气控制阀，包括：
    计算所述各个所述支路控制阀的冷媒流量之和；
    控制所述补气控制阀以所述冷媒流量之和的负值进行调整流量开度。
  3. 根据权利要求1所述的控制方法，其特征在于，所述当所述多联机的所述当前过热度偏离设定的目标过热度时，控制调节所述每一支路控制阀的冷媒流量，包括：
    当所述多联机空调的所述当前过热度大于或等于所述目标过热度时，控制提高所述各个支路控制阀中的一个或多个的冷媒流量；
    当所述多联机空调的所述当前过热度小于所述目标过热度时，控制降低所述各个支路控制阀中的一个或多个的冷媒流量。
  4. 根据权利要求1所述的控制方法，其特征在于，所述控制方法还包括：
    当所述多联机空调的所述当前过热度达到设定的目标过热度时，获取 补气管路中在所述补气换热器进行换热之前的第一补气冷媒温度和在所述补气换热器进行换热之后的第二补气冷媒温度；
    基于所述第一补气冷媒温度和所述第二补气冷媒温度，确定所述补气控制阀的开闭状态。
  5. 根据权利要求4所述的控制方法，其特征在于，所述基于所述第一补气冷媒温度和所述第二补气冷媒温度，确定所述补气控制阀的开闭状态，包括：
    计算所述第一补气冷媒温度和所述第二补气冷媒温度的差值绝对值；
    当所述差值绝对值大于预设的阈值区间时，控制所述补气控制阀为开启状态；
    当所述差值绝对值小于所述预设的阈值区间时，控制所述补气控制阀为关闭状态。
  6. 一种多联机空调，其特征在于，所述多联机空调包括多个并联连接于冷媒主循环流路的室外换热器，每一所述室外换热器所处的并联支路设有可控制流经所述并联支路的冷媒流量的支路控制阀；以及补气管组，用于将所述冷媒主循环流路的部分冷媒输送至压缩机的补气口以对所述压缩机进行补气，所述补气管组包括补气管路、补气换热器和补气控制阀，其中，所述补气管路的两端分别连接所述冷媒主循环管路和所述压缩机的补气口，所述补气换热器的两个热交换腔分别串接于所述冷媒主循环管路和所述补气管路，所述补气控制阀用于控制向所述压缩机进行补气的冷媒流量；还包括控制器，用于：
    确定所述多联机空调的当前过热度；
    当所述多联机空调的所述当前过热度偏离设定的目标过热度时，控制调节所述支路控制阀的冷媒流量，以使所述当前过热度达到所述设定的目标过热度；
    根据各个所述支路控制阀的冷媒流量，控制调节所述补气控制阀的冷媒流量。
  7. 根据权利要求6所述的空调，其特征在于，所述控制器具体用于：
    计算所述各个所述支路控制阀的冷媒流量之和；
    控制所述补气控制阀以所述冷媒流量之和的负值进行调整流量开度。
  8. 根据权利要求6所述的空调，其特征在于，所述控制器具体用于：
    当所述多联机空调的所述当前过热度大于或等于所述目标过热度时，控制提高所述各个支路控制阀中的一个或多个的冷媒流量；
    当所述多联机空调的所述当前过热度小于所述目标过热度时，控制降低所述各个支路控制阀中的一个或多个的冷媒流量。
  9. 根据权利要求6所述的空调，其特征在于，所述空调还包括：
    第一传感器，设置于所述补气管路的所述补气换热器之前的管路段上，用于获取补气管路中在所述补气换热器进行换热之前的第一补气冷媒温度；
    第二传感器，设置于所述补气管路的所述补气换热器之后的管路段上，用于获取补气管路中在所述补气换热器进行换热之后的第二补气冷媒温度；
    所述控制器还用于：
    当所述多联机空调的所述当前过热度达到设定的目标过热度时，基于所述第一补气冷媒温度和所述第二补气冷媒温度，确定所述补气控制阀的开闭状态。
  10. 根据权利要求9所述的空调，其特征在于，所述控制器还具体用于：
    计算所述第一补气冷媒温度和所述第二补气冷媒温度的差值绝对值；
    当所述差值绝对值大于预设的阈值区间时，控制所述补气控制阀为开启状态；
    当所述差值绝对值小于所述预设的阈值区间时，控制所述补气控制阀为关闭状态。
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