WO2022083201A1 - 压缩机控制方法和控制装置、模块化空调机组 - Google Patents

压缩机控制方法和控制装置、模块化空调机组 Download PDF

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Publication number
WO2022083201A1
WO2022083201A1 PCT/CN2021/108645 CN2021108645W WO2022083201A1 WO 2022083201 A1 WO2022083201 A1 WO 2022083201A1 CN 2021108645 W CN2021108645 W CN 2021108645W WO 2022083201 A1 WO2022083201 A1 WO 2022083201A1
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frequency
compressors
compressor
conditioning unit
operating
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PCT/CN2021/108645
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English (en)
French (fr)
Inventor
刘华
张龙爱
温祖恒
王传华
黎俊
罗昭铭
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珠海格力电器股份有限公司
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Priority to EP21881621.3A priority Critical patent/EP4166863A4/en
Publication of WO2022083201A1 publication Critical patent/WO2022083201A1/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
    • F24F11/62—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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—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
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/50—Load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/36—Modules, e.g. for an easy mounting or transport
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • F25B2400/0751—Details of compressors or related parts with parallel compressors the compressors having different capacities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/021—Inverters therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0251—Compressor control by controlling speed with on-off operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present disclosure relates to the technical field of air conditioners, and in particular, to a compressor control method and control device, and a modular air conditioner unit.
  • the conventional compressor control method is that a single unit adjusts the compressor start-stop and frequency up and down according to the load.
  • a compressor control method for a modular air conditioning unit including: detecting a load demand of the modular air conditioning unit, the modular air conditioning unit includes at least one inverter air conditioner unit, and the inverter air conditioner unit is provided with There is at least one compressor, and the compressor has at least one frequency high-efficiency section distributed from low to high; judge whether the output capacity of the modular air conditioning unit meets the load demand; if the output capacity does not meet the load demand, judge whether all compressors All of them are turned on. If so, according to the set up-frequency rule, the operating frequency of the compressor will be gradually increased from the opening frequency to the high-efficiency section of each frequency. Otherwise, the compressors will be turned on one by one according to the set order.
  • setting the up-frequency rule includes at least one of the following steps: when all the compressors operate between the start-up frequency and the high-efficiency section with the lowest frequency and the operating frequencies are not completely consistent, sequentially add The operating frequency of the compressors is gradually increased to the lower limit of the high-efficiency section of the lowest frequency; when all the compressors operate in the high-efficiency section of the same frequency and the operating frequencies are exactly the same, the operating frequencies of all compressors are gradually increased to the frequency where they are located.
  • the upper limit of the high-efficiency section when all the compressors operate in the same frequency high-efficiency section and the operating frequencies are not completely consistent, gradually increase the operating frequency of the compressors to the upper limit of the high-efficiency section of the frequency according to the set sequence.
  • the setting of the up-frequency rule further includes: when all the compressors are operating at the upper limit value of the high-efficiency section of the highest frequency, the operating frequencies of all the compressors are gradually increased to the highest frequency at the same time.
  • the compressor control method further includes: if the output capacity exceeds the load demand, judging whether all the compressors are not all turned on or all the compressors are running at the turning-on frequency, and if so, turning off the compressors one by one according to the set order, Otherwise, the operating frequency of the compressor will be gradually reduced to the opening frequency according to the set frequency reduction rule.
  • setting the frequency reduction rule includes at least one of some steps: when all the compressors are running between the opening frequency and the lower limit value of the high-efficiency section of the lowest frequency, the compressors are sequentially set according to the set order. The operating frequency of the compressor is gradually reduced to the opening frequency; or when the operating frequency of all compressors is higher than the lower limit value of the high-efficiency section of the lowest frequency, the operating frequency of all compressors is gradually reduced at the same time.
  • the compressor control method further includes maintaining the current state of the modular air conditioning unit when the output capacity just meets the load demand.
  • all compressors have the same turn-on frequency and high frequency band.
  • the operating frequency of the compressor is gradually increased or decreased in steps of a set amplitude.
  • a compressor control device for a modular air conditioning unit comprising: a memory configured to store instructions; a processor coupled to the memory, the processor configured to store instructions based on the memory Execution implements a method as described in any of the preceding embodiments.
  • a modular air conditioning unit comprising the compressor control device according to any one of the above embodiments.
  • a non-transitory computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, any of the foregoing embodiments is implemented the method described.
  • FIG. 1 is a schematic flowchart of a compressor control method according to an embodiment of the disclosure
  • FIG. 2 is a schematic structural diagram of a compressor control device according to an embodiment of the disclosure.
  • FIG. 3 is a schematic structural diagram of a modular air conditioning unit according to an embodiment of the disclosure.
  • the present disclosure provides a compressor control scheme, which can improve the overall operation efficiency of the modular air conditioning unit.
  • the compressor control method proposed in the present disclosure is applicable to a modular air conditioning unit.
  • the modular air conditioning unit includes at least one inverter air conditioner unit, and the inverter air conditioner unit is provided with at least one compressor, and each compressor has at least one compressor distributed from low to high. A frequency efficient segment.
  • modular air conditioning units usually include more than two inverter air conditioning units.
  • compressors with the same characteristics are combined into the same modular air conditioning unit, that is, all compressors in the modular air conditioning unit are turned on.
  • the frequency is the same, and the high frequency section is also the same.
  • the compressor control method includes the following steps:
  • the load demand usually refers to the indoor load demand at the end of the modular air-conditioning unit; to determine whether the output capacity of the modular air-conditioning unit meets the load demand, the output capacity usually refers to the cooling capacity or heating capacity; If the capacity does not meet the load demand, judge whether all the compressors are turned on. If so, gradually increase the operating frequency of the compressors from the starting frequency to the high-efficiency section of each frequency according to the set up-frequency rule. Otherwise, turn on the compressors one by one according to the set order. to increase the number of working compressors.
  • the output capacity just meets the load demand the current state of the modular air-conditioning unit is maintained, and the “just meet” here means that the output capacity is within the allowable range of the load demand.
  • setting upscaling rules includes:
  • the operating frequencies of all the compressors are gradually increased to the upper limit of the high-efficiency section of the frequency they are in. Specifically, all compressors are boosted each time. If the output capacity still does not meet the load demand after the operating frequency reaches the maximum operating frequency, continue to increase the operating frequency of all compressors until the operating frequencies of all compressors reach the upper limit of the high-efficiency section of the same frequency.
  • the operating frequencies of all compressors are gradually increased to the lower limit of the higher-frequency high-efficiency section of the two high-frequency sections. Specifically, after raising the operating frequencies of all compressors each time, if the output capacity still does not meet the load demand, continue to increase the operating frequencies of all compressors until the operating frequencies of all compressors reach the middle of the two frequency high-efficiency sections. The lower limit of the high frequency efficient section.
  • setting the frequency reduction rule includes:
  • the operating frequencies of all compressors When the operating frequencies of all compressors are higher than the lower limit of the high-efficiency section of the lowest frequency, the operating frequencies of all compressors will be gradually reduced at the same time. Specifically, after each reduction of the operating frequencies of all compressors, if the output capacity exceeds load demand, continue to reduce the operating frequency of all compressors until the operating frequency of any compressor drops to the opening frequency.
  • the lower limit value of the high-efficiency frequency section is set because the lower limit value has lower noise, which can ensure that the compressor has higher efficiency and lower noise.
  • all compressors in the modular air conditioning unit have their corresponding numbers, such as compressor 1, compressor 2... n.
  • the setting range is gradually increased or decreased, and the set range can be 1Hz, of course, other values can also be designed.
  • the operating state of the compressor or the load demand changes, it will re-judge whether the output capacity of the modular air conditioning unit meets the load demand, so as to ensure that the output capacity just meets the load demand and improve the operating efficiency of the unit.
  • the compressor has two high-frequency high-efficiency sections as an example.
  • the limit value is a
  • the upper limit value is b
  • the lower limit value of the high-frequency high-efficiency section is c
  • the upper limit value is d
  • the values of a, b, c, and d increase in turn and the unit is Hz.
  • multiple frequency high-efficiency sections e ⁇ f, g ⁇ h, etc. can be added according to the characteristics of the compressor unit, so as to further subdivide the frequency high-efficiency sections of the compressor, so that all compressors in the modular air conditioning unit have multiple frequency high-efficiency sections. stage, and more precisely control the compressor to maintain high-efficiency and low-noise operation.
  • the compressor control method is as follows:
  • Step 1.0 Detect whether there is a load demand at the end of the modular air-conditioning unit, and if so, start the first compressor in the set order;
  • Step 2.0 determine whether the output capacity of the modular air conditioning unit meets the load demand, if it does not meet the load demand, go to Step 3.0, if it exceeds the load demand, go to Step 2.1, if it just meets the load demand, maintain the current state;
  • Step 2.1 Turn off the compressors one by one according to the set order, and return to step 2.0;
  • Step 3.0 continue to start the next compressor according to the set sequence and proceed to step 4.0;
  • Step 4.0 judge whether all compressors are turned on, if not, go to step 2.0, if so, go to step 5.0;
  • Step 5.0 determine whether the output capacity of the modular air conditioning unit meets the load demand, if it does not meet the load demand, go to Step 6.0, if it exceeds the load demand, go to Step 5.1, if it just meets the load demand, maintain the current state;
  • Step 5.1 Reduce the operating frequency of the compressors to the opening frequency one by one according to the set order. After reducing the operating frequency of one compressor each time, determine whether the operating frequencies of all compressors have dropped to the opening frequency. If so, go back to step 2.0. No go back to step 5.0;
  • Step 6.0 Raise the operating frequency of the compressors one by one from the opening frequency to a according to the set sequence. After raising the operating frequency of one compressor each time, determine whether the operating frequencies of all compressors have reached a. If so, go to step 7.0. Otherwise, go back to step 5.0;
  • Step 7.0 determine whether the output capacity of the modular air-conditioning unit meets the load demand, if it does not meet the load demand, go to Step 8.0, if it exceeds the load demand, go to Step 7.1, if it just meets the load demand, maintain the current state;
  • Step 7.1 Reduce the operating frequencies of all compressors at the same time. After each reduction of the operating frequencies of all compressors, determine whether the operating frequencies of all compressors have dropped to a, if so, return to step 5.0, otherwise return to 7.0;
  • Step 8.0 Raise the operating frequencies of all compressors at the same time, after each boosting the operating frequencies of all compressors, determine whether the operating frequencies of all compressors reach b, if so, go to step 9.0, otherwise return to step 7.0.
  • Step 9.0 determine whether the output capacity of the modular air conditioning unit meets the load demand, if it does not meet the load demand, go to step 10.0, if it exceeds the load demand, go to step 9.1, if it just meets the load demand, maintain the current state;
  • Step 9.1 Reduce the operating frequencies of all compressors at the same time. After reducing the operating frequencies of all compressors each time, determine whether the operating frequencies of all compressors have dropped to b. If so, return to step 7.0, otherwise return to 9.0;
  • Step 10.0 Increase the operating frequency of the compressors from b to c one by one according to the set order. After raising the operating frequency of one compressor each time, determine whether the operating frequencies of all compressors reach c. If so, go to step 11.0, if not. Return to step 9.0;
  • Step 11.0 determine whether the output capacity of the modular air conditioning unit meets the load demand, if it does not meet the load demand, go to step 12.0, if it exceeds the load demand, go to step 11.1, if it just meets the load demand, maintain the current state;
  • Step 11.1 Reduce the operating frequencies of all compressors at the same time. After each reduction of the operating frequencies of all compressors, determine whether the operating frequencies of all compressors have dropped to b. If so, return to step 9.0, otherwise return to 7.0;
  • Step 12.0 Raise the operating frequencies of all compressors at the same time. After each boosting of the operating frequencies of all compressors, determine whether the operating frequencies of all compressors have reached d. If so, go to step 13.0, otherwise return to step 11.0.
  • Step 13.0 determine whether the output capacity of the modular air-conditioning unit meets the load demand, if it does not meet the load demand, go to step 14.0, if it exceeds the load demand, go to step 13.1, if it just meets the load demand, maintain the current state;
  • Step 13.1 Reduce the operating frequencies of all compressors at the same time. After reducing the operating frequencies of all compressors each time, determine whether the operating frequencies of all compressors have dropped to c. If so, return to step 11.0, otherwise return to 13.0;
  • Step 14.0 Raise the operating frequencies of all compressors at the same time. After each boosting the operating frequencies of all compressors, determine whether the operating frequencies of all compressors have reached the highest frequency. If so, go to step 15.0, otherwise return to step 13.0;
  • Step 15.0 determine whether the output capacity of the modular air-conditioning unit meets the load demand, if it exceeds the load demand, go to Step 15.1, if it does not meet the load demand or just meet the load demand, maintain the current state;
  • Step 15.1 Reduce the operating frequencies of all compressors at the same time. After each reduction of the operating frequencies of all compressors, determine whether the operating frequencies of all compressors have dropped to d. If so, return to step 13.0, otherwise return to 15.0.
  • FIG. 2 is a schematic structural diagram of a compressor control device according to an embodiment of the disclosure. As shown in FIG. 2 , the compressor control device includes a memory 21 and a processor 22 .
  • a memory 21 is used to store instructions, and a processor 22 is coupled to the memory 21, and the processor 22 is configured to implement a method as referred to in any of the embodiments of FIG. 1 based on the execution of the instructions stored in the memory.
  • the compressor control device further includes a communication interface 23 for exchanging information with other devices.
  • the compressor control device also includes a bus 24 , and the processor 22 , the communication interface 23 , and the memory 21 communicate with each other through the bus 24 .
  • the memory 21 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk memory.
  • the memory 21 may also be a memory array.
  • the storage 21 may also be divided into blocks, and the blocks may be combined into virtual volumes according to certain rules.
  • processor 22 may be a central processing unit (CPU), or may be an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present disclosure.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the present disclosure also relates to a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the instructions are executed by a processor to implement the method involved in any of the embodiments in FIG. 1 .
  • FIG. 3 is a schematic structural diagram of a modular air conditioning unit according to an embodiment of the disclosure.
  • the modular air conditioning unit 31 includes a compressor control device 32 .
  • the compressor control device 32 is the compressor control device according to any one of the embodiments in FIG. 2 .

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Abstract

本公开提供了一种压缩机控制方法和控制装置、模块化空调机组，模块化空调机组包括至少一台变频空调机组，变频空调机组设有至少一个压缩机，压缩机具有由低至高依次分布的至少一个频率高效段。压缩机控制方法包括以下步骤：检测模块化空调机组的负荷需求；判断模块化空调机组的输出能力是否满足负荷需求；若输出能力不满足负荷需求，则判断是否所有压缩机全部开启，若是则按照设定升频规则将压缩机的运行频率从开启频率逐渐提升至各频率高效段，否则按照设定顺序逐个开启压缩机。

Description

压缩机控制方法和控制装置、模块化空调机组
相关申请的交叉引用
本公开是以CN申请号为202011140386.8，申请日为2020年10月22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公开中。
技术领域
本公开涉及空调技术领域，特别是涉及一种压缩机控制方法和控制装置、模块化空调机组。
背景技术
当多台变频空调机组在组合运行时，常规的压缩机控制方式是单台机组根据负荷调节压缩机启停以及频率升降。
发明内容
根据本公开实施例的第一方面，提供一种模块化空调机组的压缩机控制方法，包括：检测模块化空调机组的负荷需求，模块化空调机组包括至少一台变频空调机组，变频空调机组设有至少一个压缩机，压缩机具有由低至高依次分布的至少一个频率高效段；判断所述模块化空调机组的输出能力是否满足负荷需求；若输出能力不满足负荷需求，则判断是否所有压缩机全部开启，若是则按照设定升频规则将压缩机的运行频率从开启频率逐渐提升至各频率高效段，否则按照设定顺序逐个开启压缩机。
在一些实施例中，设定升频规则包括以下步骤中的至少一项：当所有压缩机均运行在开启频率至最低频率高效段之间且运行频率不完全一致时，按照设定顺序依次将压缩机的运行频率逐渐提升至最低频率高效段的下限值；当所有压缩机均运行在同一个频率高效段且运行频率完全一致时，同时将所有压缩机的运行频率逐渐提升至其所在频率高效段的上限值；当所有压缩机均运行在同一个频率高效段且运行频率不完全一致时，按照设定顺序依次将压缩机的运行频率逐渐提升至其所在频率高效段的上限值；当所有压缩机均运行在相邻两个频率高效段之间且运行频率完全一致时，同时将所有压缩机的运行频率逐渐提升至两个频率高效段中较高的频率高效段的下限值；或当所有压缩机均运行在任意一个频率高效段至其相邻较高的频率高效段的下限值之 间且运行频率不完全一致时，按照设定顺序依次将压缩机的运行频率逐渐提升至该相邻频率高效段的下限值。
在一些实施例中，设定升频规则还包括：所有压缩机均运行在最高频率高效段的上限值时，同时将所有压缩机的运行频率逐渐提升至最高频率。
在一些实施例中，压缩机控制方法还包括：若输出能力超出负荷需求，则判断是否所有压缩机未全部开启或者所有压缩机均运行在开启频率，若是则按照设定顺序逐个关闭压缩机，否则按照设定降频规则将压缩机的运行频率逐渐降低至开启频率。
在一些实施例中，设定降频规则包括一些步骤中的至少一项：当所有压缩机均运行在开启频率至最低频率高效段的下限值之间时，按照设定顺序依次将压缩机的运行频率逐渐降低至开启频率；或当所有压缩机的运行频率均高于最低频率高效段的下限值时，同时将所有压缩机的运行频率逐渐降低。
在一些实施例中，压缩机控制方法还包括：当输出能力刚好满足负荷需求时，维持所述模块化空调机组的当前状态。
在一些实施例中，所有压缩机的开启频率以及频率高效段均相同。
在一些实施例中，压缩机的运行频率以设定幅度为阶梯逐渐提升或降低。
在一些实施例中，压缩机的运行状态或者负荷需求发生变化时均会重新判断模块化空调机组的输出能力是否满足负荷需求。
根据本公开实施例的第二方面，提供一种模块化空调机组的压缩机控制装置，包括：存储器，被配置为存储指令；处理器，耦合到存储器，处理器被配置为基于存储器存储的指令执行实现如上述任一实施例所述的方法。
根据本公开实施例的第三方面，提供一种模块化空调机组，包括如上述任一实施例所述的压缩机控制装置。
根据本公开实施例的第四方面，提供一种非瞬态计算机可读存储介质，其中，非瞬态计算机可读存储介质存储有计算机指令，指令被处理器执行时实现如上述任一实施例所述的方法。
附图说明
构成说明书的一部分的附图描述了本公开的实施例，并且连同说明书一起用于解释本公开的原理。
参照附图，根据下面的详细描述，可以更加清楚地理解本公开，其中：
图1为本公开一个实施例的压缩机控制方法的流程示意图；
图2为本公开一个实施例的压缩机控制装置的结构示意图；
图3为本公开一个实施例的模块化空调机组的结构示意图。
应当明白，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。此外，相同或类似的参考标号表示相同或类似的构件。
具体实施方式
现在将参照附图来详细描述本公开的各种示例性实施例。对示例性实施例的描述仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。本公开可以以许多不同的形式实现，不限于这里所述的实施例。提供这些实施例是为了使本公开透彻且完整，并且向本领域技术人员充分表达本公开的范围。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、材料的组分和数值应被解释为仅仅是示例性的，而不是作为限制。
本公开中使用的“包括”或者“包含”等类似的词语意指在该词前的要素涵盖在该词后列举的要素，并不排除也涵盖其他要素的可能。
本公开使用的所有术语(包括技术术语或者科学术语)与本公开所属领域的普通技术人员理解的含义相同，除非另外特别定义。还应当理解，在诸如通用字典中定义的术语应当被解释为具有与它们在相关技术的上下文中的含义相一致的含义，而不应用理想化或极度形式化的意义来解释，除非这里明确地这样定义。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
发明人注意到，由于常规的压缩机控制方式是单台机组根据负荷调节压缩机启停以及频率升降，缺少整体的调控概念，经常出现单台机组压缩机频率跑至最高而其他机组刚启动或运行至效率很低的频率点，导致整体系统能效偏低、耗能严重，面临高昂的运行费用，同时运行频率越高对噪音影响较大，极大地影响用户体验。
据此，本公开提供一种压缩机控制方案，能够提高模块化空调机组的整体运行效率。
本公开提出的压缩机控制方法适用于模块化空调机组，模块化空调机组包括至少一台变频空调机组，变频空调机组设有至少一个压缩机，每个压缩机均具有由低至高依次分布的至少一个频率高效段。实际应用中，模块化空调机组通常包含两台以上的 变频空调机组，而为了便于调控，将特性相同的压缩机组合到同一个模块化空调机组中，即模块化空调机组中所有压缩机的开启频率相同、频率高效段也相同。
压缩机控制方法包括以下步骤：
检测模块化空调机组的负荷需求，负荷需求通常是指模块化空调机组末端的室内负荷需求；判断模块化空调机组的输出能力是否满足负荷需求，输出能力通常是指制冷量或者制热量；若输出能力不满足负荷需求，则判断是否所有压缩机全部开启，若是则按照设定升频规则将压缩机的运行频率从开启频率逐渐提升至各频率高效段，否则按照设定顺序逐个开启压缩机，以增加工作的压缩机数量。
若输出能力超出负荷需求，则判断是否所有压缩机未全部开启或者所有压缩机均运行在开启频率，若是则按照设定顺序逐个关闭压缩机，以减少工作的压缩机数量，若否则按照设定降频规则将压缩机的运行频率逐渐降低至开启频率。
当输出能力刚好满足负荷需求时，维持模块化空调机组的当前状态，此处的刚好满足是指输出能力处于负荷需求的允许范围内。
在一些实施例中，设定升频规则包括：
当所有压缩机均运行在开启频率至最低频率高效段之间且运行频率不完全一致时，按照设定顺序依次将压缩机的运行频率逐渐提升至最低频率高效段的下限值，具体来说是将第一台压缩机从开启频率逐渐提升至最低频率高效段的下限值之后，若输出能力仍不满足负荷需求，则将第二台压缩机从开启频率逐渐提升至最低频率高效段的下限值，若输出能力仍不满足负荷需求，则提升第三台压缩机的运行频率，按照此规则升频直至所有压缩机的运行频率均达到最低频率高效段的下限值。
当所有压缩机均运行在同一个频率高效段且运行频率完全一致时，同时将所有压缩机的运行频率逐渐提升至其所在频率高效段的上限值，具体来说是每次提升所有压缩机的运行频率之后，若输出能力仍不满足负荷需求，则继续提升所有压缩机的运行频率，直至所有压缩机的运行频率均达到同一频率高效段的上限值。
当所有压缩机均运行在同一个频率高效段且运行频率不完全一致时，按照设定顺序依次将压缩机的运行频率逐渐提升至其所在频率高效段的上限值，具体来说是将第一台压缩机运行频率逐渐提升至其所在频率高效段的上限值之后，若输出能力仍不满足负荷需求，则将第二台压缩机的运行频率逐渐提升至其所在频率高效段的上限值，若输出能力仍不满足负荷需求，则提升第三台压缩机的运行频率，按照此规则升频直至所有压缩机的运行频率均达到其所在频率高效段的上限值。
当所有压缩机均运行在相邻两个频率高效段之间且运行频率完全一致时，同时将所有压缩机的运行频率逐渐提升至两个频率高效段中较高的频率高效段的下限值，具体来说是每次提升所有压缩机的运行频率之后，若输出能力仍不满足负荷需求，则继续提升所有压缩机的运行频率，直至所有压缩机的运行频率均达到两个频率高效段中较高的频率高效段的下限值。
当所有压缩机均运行在任意一个频率高效段至其相邻较高的频率高效段的下限值之间且运行频率不完全一致时，按照设定顺序依次将压缩机的运行频率逐渐提升至该相邻频率高效段的下限值，具体来说是将第一台压缩机运行频率逐渐提升至该相邻频率高效段的下限值之后，若输出能力仍不满足负荷需求，则将第二台压缩机的运行频率逐渐提升至该相邻频率高效段的下限值，若输出能力仍不满足负荷需求，则提升第三台压缩机的运行频率，按照此规则升频直至所有压缩机的运行频率均达到该相邻频率高效段的下限值。
当所有压缩机均运行在最高频率高效段的上限值时，同时将所有压缩机的运行频率逐渐提升至最高频率，具体来说是每次提升所有压缩机的运行频率之后，若输出能力仍不满足负荷需求，则继续提升所有压缩机的运行频率，直至所有压缩机的运行频率均达到最高频率。
在一些实施例中，设定降频规则包括：
当所有压缩机均运行在开启频率至最低频率高效段的下限值之间时，按照设定顺序依次将压缩机的运行频率逐渐降低至开启频率，具体来说是将第一台压缩机运行频率逐渐降低至开启频率之后，若输出能力仍超出负荷需求，则将第二台压缩机的运行频率逐渐降低至开启频率，若输出能力仍超出负荷需求，则降低第三台压缩机的运行频率，按照此规则升频直至所有压缩机的运行频率均降至开启频率。
当所有压缩机的运行频率均高于最低频率高效段的下限值时，同时将所有压缩机的运行频率逐渐降低，具体来说是每次降低所有压缩机的运行频率之后，若输出能力超出负荷需求，则继续降低所有压缩机的运行频率，直至有压缩机的运行频率降至开启频率。
需要说明的是，高效频率段的下限值设置是因为下限值噪音更低，可以保证压缩机在效率较高的同时噪音较低。进一步的，模块化空调机组中的所有压缩机均有其对应的编号，比如压缩机1、压缩机2……压缩机n，设定顺序是从压缩机1开始按照编号大小逐个轮到压缩机n。而在运行频率的调节过程以设定幅度为阶梯逐渐提升或降 低，该设定幅度可以为1Hz，当然也可以设计为其他值。再进一步的，压缩机的运行状态或者负荷需求发生变化时均会重新判断模块化空调机组的输出能力是否满足负荷需求，以确保输出能力刚好满足负荷需求，提高机组的运行效率。
为了方便理解，以压缩机具有两个频率高效段为例进行说明，该两个频率高效段分别是低频频率高效段和高于低频频率高效段的高频频率高效段，低频频率高效段的下限值为a、上限值为b，高频频率高效段的下限值为c、上限值为d，a、b、c、d的数值依次增大且单位均为Hz。实际应用中可以根据压缩机单体特性增加设置多个频率高效段e～f、g～h等，更加细分压缩机的频率高效段，让模块化空调机组里所有压缩机有多个频率高效段，更加精准地控制压缩机维持高效低噪运行。
在一些实施例中，如图1所示，压缩机控制方法如下：
步骤1.0、检测模块化空调机组的末端是否有负荷需求，若是则按照设定顺序启动第一个压缩机；
步骤2.0、判断模块化空调机组的输出能力是否满足负荷需求，若不满足负荷需求则进行步骤3.0，若超出负荷需求则进行步骤2.1，若刚好满足负荷需求则维持当前状态；
步骤2.1、按照设定顺序逐个关闭压缩机，返回步骤2.0；
步骤3.0、按照设定顺序继续启动下一个压缩机并进行步骤4.0；
步骤4.0、判断是否所有压缩机全部开启，若否则返回步骤2.0，若是则进行步骤5.0；
步骤5.0、判断模块化空调机组的输出能力是否满足负荷需求，若不满足负荷需求则进行步骤6.0，若超出负荷需求则进行步骤5.1，若刚好满足负荷需求则维持当前状态；
步骤5.1、按照设定顺序逐个将压缩机的运行频率降低至开启频率，每次降低一个压缩机的运行频率之后判断是否所有压缩机的运行频率均降至开启频率，若是则返回步骤2.0，若否返回步骤5.0；
步骤6.0、按照设定顺序逐个将压缩机的运行频率由开启频率提升至a，每次提升一个压缩机的运行频率之后判断是否所有压缩机的运行频率均达到a，若是则进行步骤7.0，若否则返回步骤5.0；
步骤7.0、判断模块化空调机组的输出能力是否满足负荷需求，若不满足负荷需求则进行步骤8.0，若超出负荷需求则进行步骤7.1，若刚好满足负荷需求则维持当前 状态；
步骤7.1、同时降低所有压缩机的运行频率，每次降低所有压缩机的运行频率之后判断是否所有压缩机的运行频率均降至a，若是则返回步骤5.0，若否则返回7.0；
步骤8.0、同时提升所有压缩机的运行频率，每次提升所有压缩机的运行频率之后判断是否所有压缩机的运行频率均达到b，若是则进行步骤9.0，若否则返回步骤7.0。
步骤9.0、判断模块化空调机组的输出能力是否满足负荷需求，若不满足负荷需求则进行步骤10.0，若超出负荷需求则进行步骤9.1，若刚好满足负荷需求则维持当前状态；
步骤9.1、同时降低所有压缩机的运行频率，每次降低所有压缩机的运行频率之后判断是否所有压缩机的运行频率均降至b，若是则返回步骤7.0，若否则返回9.0；
步骤10.0、按照设定顺序逐个将压缩机的运行频率由b提升至c，每次提升一个压缩机的运行频率之后判断是否所有压缩机的运行频率均达到c，若是则进行步骤11.0，若否则返回步骤9.0；
步骤11.0、判断模块化空调机组的输出能力是否满足负荷需求，若不满足负荷需求则进行步骤12.0，若超出负荷需求则进行步骤11.1，若刚好满足负荷需求则维持当前状态；
步骤11.1、同时降低所有压缩机的运行频率，每次降低所有压缩机的运行频率之后判断是否所有压缩机的运行频率均降至b，若是则返回步骤9.0，若否则返回7.0；
步骤12.0、同时提升所有压缩机的运行频率，每次提升所有压缩机的运行频率之后判断是否所有压缩机的运行频率均达到d，若是则进行步骤13.0，若否则返回步骤11.0。
步骤13.0、判断模块化空调机组的输出能力是否满足负荷需求，若不满足负荷需求则进行步骤14.0，若超出负荷需求则进行步骤13.1，若刚好满足负荷需求则维持当前状态；
步骤13.1、同时降低所有压缩机的运行频率，每次降低所有压缩机的运行频率之后判断是否所有压缩机的运行频率均降至c，若是则返回步骤11.0，若否则返回13.0；
步骤14.0、同时提升所有压缩机的运行频率，每次提升所有压缩机的运行频率之后判断是否所有压缩机的运行频率均达到最高频率，若是则进行步骤15.0，否则返回步骤13.0；
步骤15.0、判断模块化空调机组的输出能力是否满足负荷需求，若超出负荷需求则进行步骤15.1，若不满足负荷需求或者刚好满足负荷需求则维持当前状态；
步骤15.1、同时降低所有压缩机的运行频率，每次降低所有压缩机的运行频率之后判断是否所有压缩机的运行频率均降至d，若是则返回步骤13.0，若否则返回15.0。
图2为本公开一个实施例的压缩机控制装置的结构示意图。如图2所示，压缩机控制装置包括存储器21和处理器22。
存储器21用于存储指令，处理器22耦合到存储器21，处理器22被配置为基于存储器存储的指令执行实现如图1中任一实施例涉及的方法。
如图2所示，该压缩机控制装置还包括通信接口23，用于与其它设备进行信息交互。同时，该压缩机控制装置还包括总线24，处理器22、通信接口23、以及存储器21通过总线24完成相互间的通信。
存储器21可以包含高速RAM存储器，也可还包括非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。存储器21也可以是存储器阵列。存储器21还可能被分块，并且块可按一定的规则组合成虚拟卷。
此外，处理器22可以是一个中央处理器CPU，或者可以是专用集成电路ASIC，或是被配置成实施本公开实施例的一个或多个集成电路。
本公开同时还涉及一种非瞬态计算机可读存储介质，其中非瞬态计算机可读存储介质存储有计算机指令，指令被处理器执行时实现如图1中任一实施例涉及的方法。
图3为本公开一个实施例的模块化空调机组的结构示意图。如图3所示，模块化空调机组31中包括压缩机控制装置32。压缩机控制装置32为图2中任一实施例涉及的压缩机控制装置。
以上所述仅为本公开的较佳实施例而已，并不用以限制本公开，凡在本公开的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本公开的保护范围之内。

Claims (12)

  1. 模块化空调机组的压缩机控制方法，包括：
    检测模块化空调机组的负荷需求，所述模块化空调机组包括至少一台变频空调机组，所述变频空调机组设有至少一个压缩机，所述压缩机具有由低至高依次分布的至少一个频率高效段；
    判断所述模块化空调机组的输出能力是否满足负荷需求；
    若输出能力不满足负荷需求，则判断是否所有压缩机全部开启；
    若是则按照设定升频规则将压缩机的运行频率从开启频率逐渐提升至各频率高效段；
    否则按照设定顺序逐个开启压缩机。
  2. 根据权利要求1所述的压缩机控制方法，其中，所述设定升频规则包括以下步骤中的至少一项：
    当所有压缩机均运行在开启频率至最低频率高效段之间且运行频率不完全一致时，按照设定顺序依次将压缩机的运行频率逐渐提升至最低频率高效段的下限值；
    当所有压缩机均运行在同一个频率高效段且运行频率完全一致时，同时将所有压缩机的运行频率逐渐提升至其所在频率高效段的上限值；
    当所有压缩机均运行在同一个频率高效段且运行频率不完全一致时，按照设定顺序依次将压缩机的运行频率逐渐提升至其所在频率高效段的上限值；
    当所有压缩机均运行在相邻两个频率高效段之间且运行频率完全一致时，同时将所有压缩机的运行频率逐渐提升至两个频率高效段中较高的频率高效段的下限值；
    或当所有压缩机均运行在任意一个频率高效段至其相邻较高的频率高效段的下限值之间且运行频率不完全一致时，按照设定顺序依次将压缩机的运行频率逐渐提升至该相邻频率高效段的下限值。
  3. 根据权利要求1所述的压缩机控制方法，其中，所述设定升频规则还包括：
    当所有压缩机均运行在最高频率高效段的上限值时，同时将所有压缩机的运行频率逐渐提升至最高频率。
  4. 根据权利要求1所述的压缩机控制方法，其中，所述压缩机控制方法还包括：
    若输出能力超出负荷需求，则判断是否所有压缩机未全部开启或者所有压缩机均运行在开启频率；
    若是则按照设定顺序逐个关闭压缩机；
    否则按照设定降频规则将压缩机的运行频率逐渐降低至开启频率。
  5. 根据权利要求4所述的压缩机控制方法，其中，所述设定降频规则包括一些步骤中的至少一项：
    当所有压缩机均运行在开启频率至最低频率高效段的下限值之间时，按照设定顺序依次将压缩机的运行频率逐渐降低至开启频率；
    或当所有压缩机的运行频率均高于最低频率高效段的下限值时，同时将所有压缩机的运行频率逐渐降低。
  6. 根据权利要求1所述的压缩机控制方法，其中，所述压缩机控制方法还包括：
    当输出能力刚好满足负荷需求时，维持所述模块化空调机组的当前状态。
  7. 根据权利要求1至6任一项所述的压缩机控制方法，其中，所有压缩机的开启频率以及频率高效段均相同。
  8. 根据权利要求1至6任一项所述的压缩机控制方法，其中，所述压缩机的运行频率以设定幅度为阶梯逐渐提升或降低。
  9. 根据权利要求1至6任一项所述的压缩机控制方法，其中，所述压缩机的运行状态或者负荷需求发生变化时均会重新判断所述模块化空调机组的输出能力是否满足负荷需求。
  10. 模块化空调机组的压缩机控制装置，包括：
    存储器，被配置为存储指令；
    处理器，耦合到存储器，处理器被配置为基于存储器存储的指令执行实现如权利要求1-9中任一项所述的方法。
  11. 模块化空调机组，包括如权利要求10所述的压缩机控制装置。
  12. 一种非瞬态计算机可读存储介质，其中，非瞬态计算机可读存储介质存储有计算机指令，指令被处理器执行时实现如权利要求1-9中任一项所述的方法。
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