WO2019104967A1 - 多联式空调系统的噪音控制方法及控制器 - Google Patents

多联式空调系统的噪音控制方法及控制器 Download PDF

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WO2019104967A1
WO2019104967A1 PCT/CN2018/088275 CN2018088275W WO2019104967A1 WO 2019104967 A1 WO2019104967 A1 WO 2019104967A1 CN 2018088275 W CN2018088275 W CN 2018088275W WO 2019104967 A1 WO2019104967 A1 WO 2019104967A1
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Prior art keywords
indoor unit
room
air conditioning
conditioning system
control method
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PCT/CN2018/088275
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English (en)
French (fr)
Inventor
卢大海
王海胜
崔国栋
张铭
张中晓
刁洪福
高强
焦华
陈旭
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青岛海尔空调电子有限公司
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Publication of WO2019104967A1 publication Critical patent/WO2019104967A1/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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
    • F25B41/347—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids with the valve member being opened and closed cyclically, e.g. with pulse width modulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/247—Active noise-suppression
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound
    • 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
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • 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 invention relates to the technical field of air conditioners, and in particular to a noise control method and a controller for a multi-connected air conditioning system.
  • the multi-connected air conditioning system has gradually become the preferred solution for air conditioning in office buildings, shopping malls, apartments and other collective places due to its advantages of convenient installation, small impact on the appearance of the building, and remarkable refrigeration/heating effects.
  • the electronic expansion valve of the heating indoor unit that normally does not start will retain a certain degree of opening (ie, the reference retention opening) to allow the refrigerant to participate in the circulation of the system. .
  • the use of large-caliber electronic expansion valves increases the cost of the whole machine to a certain extent.
  • the cost of multi-connected air-conditioning systems will be greatly increased by replacing electronic expansion valves of multiple indoor units at the same time. That is to say, the existing technical solution for replacing the standby noise of the heating indoor unit by replacing the large-caliber electronic expansion valve has the problems of poor effect and high cost.
  • the present invention provides a A noise control method for a multi-connected air-conditioning system, the multi-connected air-conditioning system includes an outdoor unit and a plurality of indoor units, each of which is provided with an expansion valve, wherein the noise control method includes the following steps :
  • the expansion valve corresponding to the indoor unit that sets the room in the standby state is controlled to be closed.
  • the noise control method further includes:
  • the opening degree of the expansion valve corresponding to the indoor unit in the standby state in which the unset room is controlled is increased by the first set opening degree.
  • the step of: controlling the opening degree of the expansion valve corresponding to the indoor unit in the standby state in which the room is not set to increase by the first set opening degree further includes :
  • the opening degree of the expansion valve corresponding to the indoor unit in the standby state in which the unset room is controlled is increased by the first set opening degree.
  • the step of the first setting opening degree further includes:
  • the ratio is taken as the first set opening degree.
  • the noise control method further includes: before the step of “controlling the expansion valve corresponding to the indoor unit in which the set room is in the standby state”, the noise control method further includes:
  • the set room is determined based on the address encoding of the indoor unit.
  • the step of determining the set room based on the address code of the indoor unit further includes:
  • the room in which the indoor unit corresponding to the address code is located is determined as the set room.
  • the address code of the indoor unit becomes the marked state.
  • the marking instruction is a silent period setting instruction.
  • the present invention also provides a controller for a multi-connected air conditioning system, the controller being capable of performing the above noise control method according to any one of the above aspects.
  • the noise control method of the multi-connected air conditioning system includes the following steps: obtaining a heating mode when the operation mode of the multi-connected air conditioning system is the heating mode.
  • the running time of the indoor unit corresponding to the indoor unit that controls the setting of the room in the standby state when the running time is greater than the time threshold; and the opening degree of the expansion valve corresponding to the indoor unit that is in the standby state of the unset room Increase the first setting opening.
  • Noise control when sleeping in a special crowd room completely eliminating the noise generated by the indoor unit of the room, greatly improving the user experience.
  • the circulation flow rate of the refrigerant can be increased, and most of the refrigerant can be smoothly recirculated while reducing the indoor unit. The noise, avoiding the problem of missing refrigerant.
  • FIG. 1 is a schematic flow chart of a noise control method of a multi-connected air conditioning system according to the present invention
  • FIG. 2 is a schematic flow chart of a method for controlling an opening degree of an expansion valve corresponding to an indoor unit in which an unset room is in a standby state to increase a first set opening degree according to the present invention
  • FIG. 3 is a schematic flow chart of a method for calculating a first set opening degree according to the present invention.
  • the multi-connected air conditioning system includes an outdoor unit and a plurality of indoor units connected in series or in parallel with the outdoor unit, and the outdoor unit is provided with an outdoor unit heat exchanger and a compressor.
  • Outdoor unit electronic expansion valve and control chip and other components, indoor unit heat exchanger, indoor unit electronic expansion valve and other components, the connection between the above components, the refrigeration system and heating principle of the air conditioning system have been Known, it will not be described in detail here.
  • the invention has a poor effect and high cost, and the present invention provides a noise control method for the multi-connected air conditioning system.
  • the noise control method can determine the set room and control the electronic expansion valve (hereinafter referred to as the expansion valve) corresponding to the indoor unit that sets the room in the standby state to be completely closed within the set time and control the unset room.
  • the expansion valve corresponding to the indoor unit in the standby state opens the control mode of the first set opening degree, completely eliminates the sound generated by the refrigerant flow in the indoor unit in the standby state of the set room, and allows the refrigerant to pass through the room where the room is not set.
  • the expansion valve of the machine smoothly returns, greatly improving the user experience.
  • FIG. 1 is a schematic flow chart of a noise control method of a multi-connected air conditioning system according to the present invention.
  • the noise control method of the multi-connected air conditioning system of the present invention mainly comprises the following steps:
  • the operation mode of the multi-connected air conditioning system is the heating mode
  • the running time of the heating mode is obtained;
  • the operating mode of the multi-connected air conditioning system includes a cooling mode, a heating mode, a blowing mode, and a dehumidification mode, and more
  • the integrated air conditioning system obtains the current operation mode through the control chip of the outdoor unit, and the control chip acquires the running time of the air conditioner in the heating mode through a timer inside the air conditioner;
  • the expansion valve corresponding to the indoor unit that controls the setting of the room in the standby state is closed; for example, the time threshold is 3 minutes, and the room is set as the room of the insomnia patient.
  • the running time of the heating mode is more than 3 minutes, the air conditioning heating operation has reached a steady state, and then the expansion valve corresponding to the indoor unit of the insomnia patient in the indoor unit in the standby state is completely closed to completely eliminate the room.
  • the noise generated by the flow of the refrigerant in the indoor unit of course, the time threshold and the setting of the set room are not static, and those skilled in the art can also adjust it.
  • the time threshold can also be 4min, 5min, etc., as long as the multi-connected air conditioning system runs after this time, the heating operation should be stable; if the room is set, it can be other rooms that need special quiet, such as the recording studio. Or other noise sensitive rooms, etc.
  • the opening degree of the expansion valve corresponding to the indoor unit in the standby state for controlling the unset room is increased by the first set opening degree; if the first setting opening degree is 20P, corresponding to the indoor unit of the setting room After the expansion valve is completely closed, the opening degree of the expansion valve corresponding to the indoor unit that controls the unset room is increased by 20P to increase the flow rate of the refrigerant, ensure the refrigerant circulation of the air conditioning system, and effectively prevent the refrigerant from being in the indoor unit of the set room. Stack up while reducing noise.
  • the expansion valve corresponding to the indoor unit in which the setting room is in the standby state is completely closed, and the expansion valve corresponding to the indoor unit in the standby state of the unset room is controlled to be opened.
  • the method of controlling the first set opening degree is increased by the noise control method of the present invention, which can effectively eliminate the noise generated by the flow of the refrigerant in the indoor unit in the room, ensure the smooth return of the refrigerant, and reduce the unset room.
  • the noise of the indoor unit improves the user experience.
  • the noise control method further comprises: determining a setting room based on an address code of the indoor unit.
  • the address code of the indoor unit is a string of digital codes unique to each indoor unit, which can be stored on the control chip of each indoor unit and can be acquired by the control chip of the outdoor unit, or It is directly stored on the control chip of the outdoor unit and is called by the control chip.
  • the step of “determining a setting room based on address coding of the indoor unit” may further include:
  • Obtaining an address code of all indoor units in a standby state for example, acquiring an address code of the indoor unit from itself through a control chip of the outdoor unit;
  • the status of the address encoding may include a marked status and an unmarked status
  • the room in which the indoor unit corresponding to the address code is located is determined as the set room.
  • the control chip of the outdoor unit encodes the address code corresponding to the indoor unit among the plurality of address codes stored by itself, and determines that the room is a set room;
  • the instruction may be a silent period instruction that is actively set by the user, that is, the user sets the specified time period to the silent period using the silent period function on the air conditioner controller, so that the indoor unit does not generate noise during the period.
  • the tag instruction is not limited to this, and any instruction similar to the mute period instruction function belongs to the range of the tag instruction.
  • the noise control method of the present invention can completely eliminate the indoor setting room by determining the setting room by the address code of the indoor unit, and then controlling the setting mode of the expansion valve corresponding to the indoor unit of the setting room when the noise control is performed.
  • the machine generates noise during standby, which ensures the quietness of the set room and greatly improves the user experience.
  • FIG. 2 is a schematic flow chart of a method for controlling the opening degree of an expansion valve corresponding to an indoor unit in which a room is in a standby state to increase a first set opening degree according to the present invention.
  • step S300 may further include:
  • the opening degree of the expansion valve corresponding to the indoor unit in the standby state for controlling the unset room is increased by the first set opening degree, and after the first set opening degree is calculated, the indoor unit of the unset room is controlled.
  • the corresponding expansion valve opening degree is increased by the first set opening degree.
  • FIG. 3 is a schematic flowchart of a method for calculating a first set opening degree according to the present invention.
  • step S310 may further include:
  • the control chip of the outdoor unit obtains the number of indoor units of the unset room by calculating the number of uncoded address codes in the indoor unit stored in the standby state.
  • the multi-connected air conditioning system includes one outdoor unit and four indoor units, including one living room indoor unit and three bedroom indoor units, and the reference retention opening of the expansion valve corresponding to four indoor units in normal standby state
  • Both are 32P.
  • the indoor unit of the living room is normally heated, and the three bedroom indoor units are in standby state, and one of the bedroom indoor units is set by the user for the silent period.
  • the control chip of the outdoor unit controls the expansion valve corresponding to the bedroom indoor unit in the silent period to be closed to eliminate noise that may occur in the bedroom indoor unit; and controls the expansion valve corresponding to the other two bedroom indoor units.
  • the present invention also provides a controller for a multi-connected air conditioning system that is capable of performing the aforementioned noise control method.
  • a controller may be physically located in one of the outdoor units (such as the aforementioned control chip), or may be one for each indoor unit, may be a controller dedicated to performing the method of the present invention, or may be a general purpose A functional module or functional unit of the controller.
  • the present invention can control the expansion valve corresponding to the indoor unit of the indoor unit in the indoor unit in the standby state to be completely closed when the heating indoor unit is in standby, thereby setting the room,
  • noise control is performed to completely eliminate the noise generated by the indoor unit of the room.
  • the adjustment process of the present invention does not require changes to the original structure of the air conditioning system, thereby saving the overall machine cost.
  • the above-mentioned control method solves the problem that the prior art adopts the technical solution of replacing the large-diameter electronic expansion valve to solve the standby noise of the heating indoor unit, and has the problems of low control precision and high cost, and improves the user experience.

Abstract

本发明涉及空调技术领域，具体涉及一种多联式空调系统的噪音控制方法及控制器。本发明旨在解决现有的采用更换大口径电子膨胀阀来解决制热室内机待机噪音的技术方案存在的效果差、成本高的问题。本发明的多联式空调系统的噪音控制方法包括如下步骤：在多联式空调系统的运行模式为制热模式时，获取制热模式的运行时间；在运行时间大于时间阈值时，控制设定房间处于待机状态的室内机所对应的膨胀阀关闭。通过控制设定房间的室内机所对应的膨胀阀完全关闭，本发明能够针对设定房间进行噪音控制，完全消除房间的室内机产生的噪音，大大提升用户体验。

Description

多联式空调系统的噪音控制方法及控制器 技术领域
本发明涉及空调技术领域，具体涉及一种多联式空调系统的噪音控制方法及控制器。
背景技术
近年来，多联式空调系统以其安装便捷、对建筑物外观影响小、制冷/制热效果显著等优点，逐渐成为写字楼、商场、公寓等集体场所进行空气调节的首选解决方案。多联机空调系统在以制热模式运行时，为了避免冷媒的积攒，通常不开机的制热室内机的电子膨胀阀会保留一定的开度(即基准保留开度)以使冷媒参与系统的循环。但是在冷媒流动时，由于制热室内机的风扇不运转，因此冷媒的流动声音会被放大，进而形成噪音，尤其是在卧室或特殊人群(如失眠的人或睡觉轻的人)的房间等需要安静的房间，影响用户休息，还带来非常不好的使用体验。
为了解决上述制热室内机待机时的噪音问题，现有技术中多采用较大口径的电子膨胀阀替代原空调室内机中较小口径的膨胀阀的方案加以解决。这种方案通过加大膨胀阀口径、改变膨胀阀流道的方式，使得冷媒的流速降低，进而降低冷媒的流动产生的噪音。虽然这种方式一定程度上解决了冷媒流动产生的噪音问题，但是也不可避免地存在一定的缺陷。首先，通过加大电子膨胀阀口径、改变流道的方式只能降低冷媒的流动声音，并不能从根本上消除该流动声音，使得噪音依旧存在。其次，采用大口径电子膨胀阀一定程度上增加了整机的成本，对于多联式空调系统来说，同时更换多台室内机的电子膨胀阀，多联式空调系统的成本会大大增加。也就是说，现有的采用更换大口径电子膨胀阀解决制热室内机待机噪音的技术方案存在效果差、成本高的问题。
相应地，本领域需要一种新的多联式空调系统的噪音控制方法来解决上述问题。
发明内容
为了解决现有技术中的上述问题，即为了解决现有的采用更换大口径电子膨胀阀来解决制热室内机待机噪音的技术方案存在的效果差、成本高的问题，本发明提供了一种多联式空调系统的噪音控制方法，所述多联式空调系统包括室外机和多个室内机，每个所述室内机都设置有膨胀阀，其特征在于，所述噪音控制方法包括如下步骤：
在所述多联式空调系统的运行模式为制热模式时，获取所述制热模式的运行时间；
在所述运行时间大于时间阈值时，控制设定房间处于待机状态的室内机所对应的膨胀阀关闭。
在上述多联式空调系统的噪音控制方法的优选技术方案中，“在所述运行时间大于时间阈值时，控制设定房间处于待机状态的室内机所对应的膨胀阀关闭”的步骤之后，所述噪音控制方法还包括：
控制未设定房间的处于待机状态的室内机所对应的膨胀阀的开度增加第一设定开度。
在上述多联式空调系统的噪音控制方法的优选技术方案中，“控制未设定房间的处于待机状态的室内机所对应的膨胀阀的开度增加第一设定开度”的步骤进一步包括：
基于所述设定房间的室内机所对应的膨胀阀的原始开度与所述未设定房间的室内机的数量，计算所述第一设定开度；
控制未设定房间的处于待机状态的室内机所对应的膨胀阀的开度增加所述第一设定开度。
在上述多联式空调系统的噪音控制方法的优选技术方案中，“基于所述设定房间的室内机所对应的膨胀阀的原始开度与所述未设定房间的室内机的数量，计算所述第一设定开度”的步骤进一步包括：
计算所述设定房间的室内机所对应的膨胀阀的原始开度的开度总和；
计算所述未设定房间的室内机的数量；
计算所述开度总和与所述数量的比值；
将所述比值作为所述第一设定开度。
在上述多联式空调系统的噪音控制方法的优选技术方案中，在“控制设定房间处于待机状态的室内机所对应的膨胀阀关闭”的步骤之前，所述噪音控制方法还包括：
基于室内机的地址编码确定所述设定房间。
在上述多联式空调系统的噪音控制方法的优选技术方案中，“基于室内机的地址编码确定所述设定房间”的步骤进一步包括：
获取处于待机状态的所有室内机的地址编码；
获取所述地址编码的状态；
在所述地址编码处于被标记状态时，将所述地址编码所对应的室内机所在的房间确定为设定房间。
在上述多联式空调系统的噪音控制方法的优选技术方案中，当处于待机状态的室内机接收到标记指令时，所述室内机的地址编码变为被标记状态。
在上述多联式空调系统的噪音控制方法的优选技术方案中，所述标记指令为静音时段设置指令。
本发明还提供了一种多联式空调系统的控制器，上述控制器能够执行上述方案中任一项上述的噪音控制方法。
本领域技术人员能够理解的是，在本发明的优选技术方案中，多联式空调系统的噪音控制方法包括如下步骤：在多联式空调系统的运行模式为制热模式时，获取制热模式的运行时间；在运行时间大于时间阈值时，控制设定房间处于待机状态的室内机所对应的膨胀阀关闭；以及控制未设定房间的处于待机状态的室内机所对应的膨胀阀的开度增加第一设定开度。通过在制热模式下，控制设定房间处于待机状态的室内机所对应的膨胀阀关闭的控制方式，本发明的噪音控制方法能够针对设定房间、特别是在设定房间为失眠人去或睡觉轻等特殊人群房间时进行噪音控制，完全消除房间的室内机产生的噪音，大大提升用户体验。控制未设定房间处于待机状态的室内机所对应的膨胀阀开度增加第一设定开度的控制方式，则能够增大冷媒的循环流量，使大部分冷媒顺利回流的同时减小室内机的噪音，避免冷媒缺失的问题出现。
附图说明
下面参照附图来描述本发明的多联式空调系统的噪音控制方法及控制器。附图中：
图1为本发明的多联式空调系统的噪音控制方法的流程示意图；
图2为本发明的一种控制未设定房间处于待机状态的室内机所对应的膨胀阀的开度增加第一设定开度的方法流程示意图；
图3为本发明的一种计算第一设定开度的方法流程示意图。
具体实施方式
下面参照附图来描述本发明的优选实施方式。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。
首先需要说明的是，对于本领域普通技术人员而言，多联式空调系统包括室外机以及与室外机串联或并联的多个室内机，室外机中设置有室外机换热器、压缩机、室外机电子膨胀阀以及控制芯片等部件，室内机中设置有室内机换热器、室内机电子膨胀阀等部件，上述部件之间的连接关系、空调系统的制冷和制热原理等都是已知的，在此不进行详细描述。
为解决现有技术中采用更换大口径电子膨胀阀来解决制热室内机待机噪音的技术方案存在的效果差、成本高的问题，本发明提供了一种多联式空调系统的噪音控制方法，该噪音控制方法能够通过对设定房间进行判断，并且控制设定房间处于待机状态的室内机所对应的电子膨胀阀(以下简称膨胀阀)在设定时间内完全关闭、控制未设定房间的处于待机状态的室内机所对应的膨胀阀开启第一设定开度的控制方式，完全消除设定房间的处于待机状态的室内机中冷媒流动产生的声音，使冷媒通过未设定房间的室内机的膨胀阀顺利回流，大大提升用户体验。
首先参照图1，图1为本发明的多联式空调系统的噪音控制方法的流程示意图。如图1所示，本发明的多联式空调系统的噪音控制方法主要包括如下步骤：
S100、在多联式空调系统的运行模式为制热模式时，获取制热模式的运行时间；如多联式空调系统的运行模式包括制冷模式、制热模式、送风模式以及除湿模式，多联式空调系统通过室外机的控制芯片获取当前的运行模式，并且控制芯片通过空调内部的计时器获取空调在制热模式的运行时间；
S200、在运行时间大于时间阈值时，控制设定房间处于待机状态的室内机所对应的膨胀阀关闭；例如，时间阈值为3min，设定房间 为失眠患者的房间。在制热模式的运行时间大于3min时，此时空调制热运行已达到稳定状态，然后使处于待机状态的室内机中失眠患者所在房间的室内机所对应的膨胀阀完全关闭，以完全消除该房间的室内机中冷媒流动产生的噪音；当然，时间阈值和设定房间的设置并非一成不变，本领域技术人员还能够对其调整。如时间阈值还可以是4min，5min等，只要多联式空调系统经过该时间的运行后，制热运行应达到稳定即可；如设定房间还可以是其他需要特别安静的房间，如录音室或其他对噪音敏感的房间等。
S300、控制未设定房间的处于待机状态的室内机所对应的膨胀阀的开度增加第一设定开度；如第一设定开度为20P，在设定房间的室内机所对应的膨胀阀完全关闭后，控制未设定房间的室内机所对应的膨胀阀的开度增加20P，以增大冷媒的流量，保证空调系统的冷媒循环，有效避免冷媒在设定房间的室内机中堆积，同时减小噪音。
上述描述可以看出，在制热模式下，通过控制设定房间处于待机状态的室内机所对应的膨胀阀完全关闭，控制未设定房间的处于待机状态的室内机所对应的膨胀阀的开度增加第一设定开度的控制方式，本发明的噪音控制方法可以有效地消除设定房间内的室内机中冷媒流动而产生的噪音，保证冷媒的顺利回流，减小未设定房间的室内机的噪音，提高用户体验。
在一种优选地实施方式中，在步骤S200之前，所述噪音控制方法还包括：基于室内机的地址编码确定设定房间。需要解释的是，室内机的地址编码是每台室内机所独有的一串数字码，它可以存储于每个室内机的控制芯片上并且能够被室外机的控制芯片所获取，或者也可以直接存储于室外机的控制芯片上，被控制芯片所调用。
在一种可能的实施方式中，“基于室内机的地址编码确定设定房间”的步骤可以进一步包括：
获取处于待机状态的所有室内机的地址编码，如通过室外机的控制芯片从自身调取该室内机的地址编码；
获取所述地址编码的状态；如地址编码的状态可以包括被标记状态和未标记状态；
在所述地址编码处于被标记状态时，将所述地址编码所对应的室内机所在的房间确定为设定房间。如处于待机状态的室内机接收到 标记指令时，室外机的控制芯片将自身存储的多个地址编码中所对应于该室内机的地址编码标记，并确定该房间为设定房间；其中，标记指令可以为用户主动设置的静音时段指令，也就是用户使用空调控制器上面的静音时段功能将指定时间段设置为静音时段，以使该室内机在该时段内不产生噪音。当然，标记指令并非只限于此，任何与静音时段指令功能类似的指令均属于标记指令的范围。
通过室内机的地址编码确定出设定房间，然后在进行噪音控制时控制设定房间的室内机所对应的膨胀阀完全关闭的设置方式，本发明的噪音控制方法能够完全消除设定房间的室内机在待机时产生噪音，从而保证设定房间的安静，大大提高用户体验。
下面参照图2，图2为本发明的一种控制为设定房间处于待机状态的室内机所对应的膨胀阀的开度增加第一设定开度的方法流程示意图。
如图2所示，在一种可能的实施方式中，步骤S300可以进一步包括：
S310、基于设定房间的室内机所对应的膨胀阀的原始开度与未设定房间的室内机的数量，计算第一设定开度；如膨胀阀的原始开度为用户在设置静音时段之前，室内机所对应的膨胀阀的开度。
S320、控制未设定房间的处于待机状态的室内机所对应的膨胀阀的开度增加第一设定开度，在计算出第一设定开度后，控制未设定房间的室内机所对应的膨胀阀开度均增加第一设定开度。
参照图3，图3为本发明的一种计算第一设定开度的方法流程示意图。
如图3所示，在一种可能的实施方式中，步骤S310又可以进一步包括：
S311、计算设定房间的室内机所对应的膨胀阀的原始开度的开度总和，如在设定房间的数量有两个时，并且两个设定房间的室内机所对应的膨胀阀的原始开度均为32P时，计算出两个室内机所对应的膨胀阀的原始开度的开度总和为64P；
S312、计算未设定房间的室内机的数量，如室外机的控制芯片通过计算自身存储的处于待机状态的室内机中未被标记的地址编码数量获得未设定房间的室内机数量；
S313、计算开度总和与数量的比值并将该比值作为第一设定开度，如在开度总和为64P、未设定房间的室内机数量为4时，计算出比值为16P，将16P作为第一设定开度，控制未设定房间的室内机所对应的膨胀阀的开度增加16P。
下面以一种可能的示例对本发明的噪音控制方法的控制流程进行阐述。
假如多联式空调系统包括1台室外机和4台室内机，其中包括1台客厅室内机和3台卧室室内机，并且正常待机状态下4台室内机所对应的膨胀阀的基准保留开度均为32P。在一种可能的情况中，客厅室内机正常制热运行，3台卧室室内机处于待机状态，其中有一台卧室室内机被用户设置了静音时段。则在该静音时段内，室外机的控制芯片控制处于静音时段的卧室室内机所对应的膨胀阀关闭，以消除卧室室内机可能产生的噪音；并且控制另外两台卧室室内机所对应的膨胀阀的开度分别增加32P/2＝16P，以接纳更多的冷媒，提高冷媒的回流量，并减小卧室室内机产生的噪音，避免空调系统出现冷媒缺失的现象。
本发明还提供了一种多联式空调系统的控制器，该控制器能够执行前述的噪音控制方法。这种控制器物理上可以是设置于室外机的一个(如前述的控制芯片)，也可以针对每个室内机有一个，可以是专门用于执行本发明的方法的控制器，也可以是通用控制器的一个功能模块或功能单元。
综上所述，采用上述噪音控制方法，本发明能够在制热室内机待机时，控制处于待机状态的室内机中设定房间的室内机所对应的膨胀阀完全关闭，从而针对设定房间、特别是在设定房间为失眠或睡觉轻等特殊人群房间时进行噪音控制，完全消除房间的室内机产生的噪音。而且本发明的调节过程无需对空调系统的原有结构做出改动，节约了整机成本。也就是说，通过上述控制方法，解决了现有技术中采用更换大口径电子膨胀阀来解决制热室内机待机噪音的技术方案存在的控制精度低、成本高的问题，改善了用户体验。
至此，已经结合附图所示的优选实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域 技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。

Claims (9)

  1. 一种多联式空调系统的噪音控制方法，所述多联式空调系统包括室外机和多个室内机，每个所述室内机都设置有膨胀阀，其特征在于，所述噪音控制方法包括如下步骤：
    在所述多联式空调系统的运行模式为制热模式时，获取所述制热模式的运行时间；
    在所述运行时间大于时间阈值时，控制设定房间处于待机状态的室内机所对应的膨胀阀关闭。
  2. 根据权利要求1所述的多联式空调系统的噪音控制方法，其特征在于，“在所述运行时间大于时间阈值时，控制设定房间处于待机状态的室内机所对应的膨胀阀关闭”的步骤之后，所述噪音控制方法还包括：
    控制未设定房间的处于待机状态的室内机所对应的膨胀阀的开度增加第一设定开度。
  3. 根据权利要求2所述的多联式空调系统的噪音控制方法，其特征在于，“控制未设定房间的处于待机状态的室内机所对应的膨胀阀的开度增加第一设定开度”的步骤进一步包括：
    基于所述设定房间的室内机所对应的膨胀阀的原始开度与所述未设定房间的室内机的数量，计算所述第一设定开度；
    控制未设定房间的处于待机状态的室内机所对应的膨胀阀的开度增加所述第一设定开度。
  4. 根据权利要求3所述的多联式空调系统的噪音控制方法，其特征在于，“基于所述设定房间的室内机所对应的膨胀阀的原始开度与所述未设定房间的室内机的数量，计算所述第一设定开度”的步骤进一步包括：
    计算所述设定房间的室内机所对应的膨胀阀的原始开度的开度总和；
    计算所述未设定房间的室内机的数量；
    计算所述开度总和与所述数量的比值；
    将所述比值作为所述第一设定开度。
  5. 根据权利要求1至4中任一项所述的多联式空调系统的噪音控制方法，其特征在于，在“控制设定房间处于待机状态的室内机所对应的膨胀阀关闭”的步骤之前，所述噪音控制方法还包括
    基于室内机的地址编码确定所述设定房间。
  6. 根据权利要求5所述的多联式空调系统的噪音控制方法，其特征在于，“基于室内机的地址编码确定所述设定房间”的步骤进一步包括：
    获取处于待机状态的所有室内机的地址编码；
    获取所述地址编码的状态；
    在所述地址编码处于被标记状态时，将所述地址编码所对应的室内机所在的房间确定为设定房间。
  7. 根据权利要求6所述的多联式空调系统的噪音控制方法，其特征在于，当处于待机状态的室内机接收到标记指令时，所述室内机的地址编码变为被标记状态。
  8. 根据权利要求7所述的多联式空调系统的噪音控制方法，其特征在于，所述标记指令为静音时段设置指令。
  9. 一种多联式空调系统的控制器，其特征在于，所述控制器能够执行权利要求1至8中任一项所述的噪音控制方法。
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