CN108224689B - Noise control method and controller of multi-connected air conditioning system - Google Patents
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- 239000003507 refrigerant Substances 0.000 description 28
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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
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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
- F24F2013/247—Active noise-suppression
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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控制精度低的问题。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，控制所有处于待机状态的室内机所对应的膨胀阀的开度调整到基准开度；基于目标参数，对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整。通过上述控制方法，本发明能够针对每个室内机的膨胀阀分别进行调整，提高了噪音控制的精度。
The invention relates to the technical field of air conditioners, in particular to a noise control method and a controller of a multi-connected air conditioner system. The present invention aims to solve the problem of low control precision existing in the existing technical scheme for solving the standby noise of the heating indoor unit by replacing the large-diameter electronic expansion valve. The noise control method includes the following steps: when the operation mode of the multi-connected air conditioning system is the heating mode, obtaining the operation time of the heating mode; when the operation time is greater than a time threshold, controlling the expansion corresponding to all the indoor units in the standby state The opening degree of the valve is adjusted to the reference opening degree; based on the target parameter, the opening degree of the expansion valve corresponding to each indoor unit in the standby state is adjusted. Through the above control method, the present invention can individually adjust the expansion valve of each indoor unit, thereby improving the accuracy of noise control.
Description
技术领域technical field
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。The invention relates to the technical field of air conditioners, in particular to a noise control method and a controller of a multi-connected air conditioner system.
背景技术Background technique
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，尤其是在卧室等需要安静的房间，影响用户休息，带来非常不好的使用体验。In recent years, multi-connected air conditioning systems have gradually become the preferred solution for air conditioning in office buildings, shopping malls, apartments and other collective places due to their advantages of convenient installation, little impact on the appearance of buildings, and significant cooling/heating effects. When the multi-line air conditioning system is running in the heating mode, in order to avoid the accumulation of refrigerant, the electronic expansion valve of the heating indoor unit that is usually not turned on will retain a certain opening degree (ie, the opening degree) to allow the refrigerant to participate in the circulation of the system. However, when the refrigerant is flowing, since the fan of the heating indoor unit does not operate, the sound of the refrigerant flowing will be amplified, which will cause noise, especially in the bedroom and other rooms that need quiet, which will affect the user's rest and bring about very bad use. experience.
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，在实际应用时，由于膨胀阀仍然保留固定的开度，因此一些室内机仍然存在一定的噪音。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时产生噪音问题的技术方案存在控制精度低、成本高的问题。In order to solve the above-mentioned noise problem when the heating indoor unit is on standby, in the prior art, a larger-diameter electronic expansion valve is often used to replace the smaller-diameter expansion valve in the original air conditioner indoor unit. This solution reduces the flow rate of the refrigerant by increasing the diameter of the expansion valve and changing the flow path of the expansion valve, thereby reducing the noise generated by the flow of the refrigerant. Although this method solves the noise problem caused by the refrigerant flow to a certain extent, it also inevitably has certain defects. First of all, by increasing the diameter of the electronic expansion valve and changing the flow path, in practical application, since the expansion valve still retains a fixed opening, some indoor units still have a certain amount of noise. Secondly, the use of large-diameter electronic expansion valves increases the cost of the whole machine to a certain extent. For a multi-connected air-conditioning system, if the electronic expansion valves of multiple indoor units are replaced at the same time, the cost of the multi-connected air-conditioning system will greatly increase. That is to say, the existing technical solution for solving the noise problem when the heating indoor unit is in standby by replacing the large-diameter electronic expansion valve has the problems of low control precision and high cost.
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。Accordingly, there is a need in the art for a new noise control method for a multi-connected air conditioning system to solve the above problems.
发明内容SUMMARY OF THE INVENTION
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控制精度低、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：In order to solve the above problems in the prior art, that is, in order to solve the problems of low control precision and high cost in the existing technical solution of replacing the large-diameter electronic expansion valve to solve the standby noise of the heating indoor unit, the present invention provides a A noise control method for a multi-connected air-conditioning system, wherein the multi-connected air-conditioning system includes an outdoor unit and a plurality of indoor units, and each of the indoor units is provided with an expansion valve, wherein the noise control method includes the following: step:
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；When the operation mode of the multi-connected air conditioning system is the heating mode, acquiring the operation time of the heating mode;
在所述运行时间大于时间阈值时，控制所有处于待机状态的室内机所对应的膨胀阀的开度调整到基准开度；When the running time is greater than the time threshold, controlling the opening degrees of the expansion valves corresponding to all the indoor units in the standby state to be adjusted to the reference opening degrees;
基于目标参数，对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整。Based on the target parameter, the opening degree of the expansion valve corresponding to each indoor unit in the standby state is adjusted.
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，所述目标参数为室内机盘管的目标盘管温度。In a preferred technical solution of the above-mentioned noise control method for a multi-connected air conditioning system, the target parameter is the target coil temperature of the indoor unit coil.
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，“基于目标参数，对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整”的步骤进一步包括：In the preferred technical solution of the above-mentioned noise control method for a multi-connected air-conditioning system, the step of "adjusting the opening degree of the expansion valve corresponding to each indoor unit in the standby state based on the target parameter" further includes:
获取室外环境温度与每个室内机盘管的实际盘管温度；Obtain the outdoor ambient temperature and the actual coil temperature of each indoor unit coil;
基于所述室外环境温度与目标盘管温度的对应关系，确定室内机盘管的目标盘管温度；determining the target coil temperature of the indoor unit coil based on the corresponding relationship between the outdoor ambient temperature and the target coil temperature;
基于目标盘管温度和每个所述实际盘管温度，对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整。Based on the target coil temperature and each of the actual coil temperatures, the opening degree of the expansion valve corresponding to each indoor unit in the standby state is adjusted.
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，“基于目标盘管温度与每个所述实际盘管温度，对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整”的步骤进一步包括：In the preferred technical solution of the above-mentioned noise control method for a multi-connected air-conditioning system, "based on the target coil temperature and each of the actual coil temperatures, the opening degree of the expansion valve corresponding to each indoor unit in the standby state is determined. The steps to make adjustments" further include:
在所述实际盘管温度小于所述目标盘管温度时，控制所述实际盘管温度所对应的室内机的膨胀阀的开度增大第一设定开度；或者When the actual coil temperature is lower than the target coil temperature, the opening degree of the expansion valve of the indoor unit corresponding to the actual coil temperature is controlled to increase by a first set opening degree; or
在所述实际盘管温度大于所述目标盘管温度时，控制所述实际盘管温度所对应的室内机的膨胀阀的开度减小第一设定开度。When the actual coil temperature is greater than the target coil temperature, the opening degree of the expansion valve of the indoor unit corresponding to the actual coil temperature is controlled to decrease by a first set opening degree.
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，“基于目标参数，对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整”的步骤每隔第一设定时间执行一次。In a preferred technical solution of the above-mentioned noise control method for a multi-connected air-conditioning system, the step of "adjusting the opening degree of the expansion valve corresponding to each indoor unit in the standby state based on the target parameter" is set every first time time to execute once.
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，“在所述实际盘管温度小于所述目标盘管温度时，控制所述实际盘管温度所对应的室内机的膨胀阀的开度增大第一设定开度”的步骤之后，所述噪音控制方法还包括：In the preferred technical solution of the above-mentioned noise control method for a multi-connected air conditioning system, "when the actual coil temperature is lower than the target coil temperature, control the expansion valve of the indoor unit corresponding to the actual coil temperature. After the step of increasing the opening degree by the first set opening degree”, the noise control method further includes:
在膨胀阀的开度减小至最小设定阈值时，停止减小所述膨胀阀的开度。When the opening degree of the expansion valve is reduced to the minimum set threshold value, the reduction of the opening degree of the expansion valve is stopped.
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，“在所述实际盘管温度大于所述目标盘管温度时，控制所述实际盘管温度所对应的室内机的膨胀阀的开度减小第一设定开度”的步骤之后，所述噪音控制方法还包括：In the preferred technical solution of the above-mentioned noise control method for a multi-connected air conditioning system, "when the actual coil temperature is greater than the target coil temperature, control the expansion valve of the indoor unit corresponding to the actual coil temperature. After the step of reducing the opening degree by the first set opening degree", the noise control method further includes:
在膨胀阀的开度增大至最大设定阈值时，停止增大所述膨胀阀的开度。When the opening degree of the expansion valve increases to the maximum set threshold value, the increasing of the opening degree of the expansion valve is stopped.
本发明还提供了一种多联式空调系统的控制器，所述控制器能够执行上述方案中任一项所述的噪音控制方法。The present invention also provides a controller of a multi-connected air conditioning system, wherein the controller can execute the noise control method described in any one of the above solutions.
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：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，控制所有处于待机状态的室内机所对应的膨胀阀的开度调整到基准开度；基于目标参数，对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整。通过在制热模式下，控制处于待机状态的室内机所对应的膨胀阀的开度先调整到基准开度，然后基于目标参数对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整的控制方式，本发明的噪音控制方法可以针对每一个待机室内机进行噪音控制，提高控制的精准度和噪音控制效果。Those skilled in the art can understand that, in the preferred technical solution of the present invention, the noise control method of the multi-connected air-conditioning system includes: when the operation mode of the multi-connected air-conditioning system is the heating mode, obtaining the operation mode of the heating mode time; when the running time is greater than the time threshold, control the opening of the expansion valves corresponding to all the indoor units in the standby state to adjust to the reference opening; based on the target parameters, the expansion valve corresponding to each indoor unit in the standby state is adjusted The opening is adjusted. In the heating mode, the opening degree of the expansion valve corresponding to the indoor unit in the standby state is controlled to first adjust to the reference opening degree, and then the opening degree of the expansion valve corresponding to each indoor unit in the standby state is adjusted based on the target parameters. With regard to the adjustment control method, the noise control method of the present invention can perform noise control for each standby indoor unit, thereby improving the control accuracy and noise control effect.
具体而言，通过获取室外环境温度和每个室内机盘管的实际盘管温度，并基于室外环境温度确定室内机盘管的目标盘管温度，然后基于实际盘管温度和目标盘管温度的比较，对每个室内机所对应的膨胀阀的开度进行调整的方式，本发明能够在实际盘管温度小于目标盘管温度时，控制实际盘管温度所对应的室内机的膨胀阀的开度增大第一设定开度；或者在实际盘管温度大于目标盘管温度时，控制实际盘管温度所对应的室内机的膨胀阀的开度减小第一设定开度。上述控制方式减小噪音的原理在于：在实际盘管温度小于目标盘管温度时，证明该室内机盘管中堆积的冷媒量过多，此时通过增大膨胀阀开度，使冷媒的流量与膨胀阀的开度相适应，减小或消除室内机中冷媒流动产生的噪音；在实际盘管温度小于目标盘管温度时，证明该室内机盘管中的冷媒量较少，此时保持原有开度容易产生噪音，因此通过减小膨胀阀开度的方式，使冷媒的流量与膨胀阀的开度相适应，减小或消除室内机中冷媒流动产生的噪音。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。此外，由于本发明方法在控制过程中无需对空调系统的原有结构做出改动，因此本发明还节约了整机成本。Specifically, by obtaining the outdoor ambient temperature and the actual coil temperature of each indoor unit coil, and determining the target coil temperature of the indoor unit coil based on the outdoor ambient temperature, and then based on the difference between the actual coil temperature and the target coil temperature Compared with the method of adjusting the opening degree of the expansion valve corresponding to each indoor unit, the present invention can control the opening of the expansion valve of the indoor unit corresponding to the actual coil temperature when the actual coil temperature is lower than the target coil temperature. or when the actual coil temperature is greater than the target coil temperature, the opening degree of the expansion valve of the indoor unit corresponding to the actual coil temperature is controlled to decrease the first set opening. The principle of the above control method to reduce noise is: when the actual coil temperature is lower than the target coil temperature, it proves that the amount of refrigerant accumulated in the indoor unit coil is too much. At this time, by increasing the opening of the expansion valve, the flow of the refrigerant is increased Adapt to the opening of the expansion valve, reduce or eliminate the noise caused by the flow of refrigerant in the indoor unit; when the actual coil temperature is lower than the target coil temperature, it proves that the amount of refrigerant in the indoor unit coil is small, at this time keep The original opening is easy to generate noise. Therefore, by reducing the opening of the expansion valve, the flow of the refrigerant is adapted to the opening of the expansion valve to reduce or eliminate the noise caused by the flow of the refrigerant in the indoor unit. That is to say, the above control method solves the problems of low control precision and high cost in the technical solution of replacing the large-diameter electronic expansion valve to solve the standby noise of the heating indoor unit in the prior art, and improves the user experience. In addition, since the method of the present invention does not need to make changes to the original structure of the air-conditioning system during the control process, the present invention also saves the cost of the whole machine.
附图说明Description of drawings
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：The noise control method and controller of the multi-connected air-conditioning system of the present invention will be described below with reference to the accompanying drawings. In the attached picture:
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；1 is a schematic flowchart of a noise control method for a multi-connected air-conditioning system of the present invention;
图2为本发明的基于目标参数对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整的方法流程示意图。Fig. 2 is a schematic flowchart of the method of the present invention for adjusting the opening degree of the expansion valve corresponding to each indoor unit in a standby state based on target parameters.
具体实施方式Detailed ways
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。Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.
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。First of all, it should be noted that for those of ordinary skill in the art, a 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. The outdoor unit is provided with an outdoor unit heat exchanger, a compressor, a Outdoor unit electronic expansion valve and control chip and other components, indoor unit is provided with indoor unit heat exchanger, indoor unit electronic expansion valve and other components, the connection relationship between the above components, the cooling and heating principles of the air conditioning system, etc. Known, and will not be described in detail here.
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控制精度低、整机成本高的问题，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先控制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)的开度调整到基准开度，然后基于目标参数对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整的控制方式，使空调系统针对每个处于待机状态的室内机分别进行噪音控制，有效地使每一个处于待机状态的室内机所处的房间保持安静，提高了噪音的控制精度。In order to solve the problems of low control precision and high cost of the whole machine in the technical solution of the standby noise of the heating indoor unit by replacing the large-diameter electronic expansion valve in the prior art, the present invention provides a noise A control method, the noise control method can adjust the opening degree of the electronic expansion valve (hereinafter referred to as the expansion valve) corresponding to the indoor unit in the standby state to the reference opening degree, and then control each indoor unit in the standby state based on target parameters. The control method of adjusting the opening degree of the expansion valve corresponding to the machine makes the air-conditioning system perform noise control for each indoor unit in the standby state, effectively keeping the room where each indoor unit in the standby state is located. Improved noise control accuracy.
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：Referring first to FIG. 1 , FIG. 1 is a schematic flowchart of a noise control method for a multi-connected air-conditioning system of the present invention. As shown in Figure 1, the noise control method of the multi-connected air-conditioning system of the present invention mainly includes the following steps:
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。S100. When the operation mode of the multi-connected air-conditioning system is the heating mode, obtain the operation time of the heating mode; for example, the operation mode of the multi-connected air-conditioning system includes a cooling mode, a heating mode, an air supply mode, and a dehumidification mode. The combined air conditioner system obtains the current operation mode through the control chip of the outdoor unit, and the control chip obtains the operation time of the air conditioner in the heating mode through the timer inside the air conditioner.
S200、在运行时间大于时间阈值时，控制所有处于待机状态的室内机所对应的膨胀阀的开度调整到基准开度；例如，时间阈值为10min，基准开度为现有技术中膨胀阀的保留开度(如保留开度为24P，其中P为开度脉冲单位，下同)，在制热模式的运行时间大于10min时，此时空调制热运行已达到稳定状态，然后控制处于待机状态的室内机所对应的膨胀阀的开度调整到该膨胀阀的保留开度；当然，时间阈值和基准开度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3min、5min、或15min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；如基准开度还可以是保留开度附近的任意值。S200. When the running time is greater than the time threshold, control the openings of the expansion valves corresponding to all the indoor units in the standby state to be adjusted to the reference opening; for example, the time threshold is 10 minutes, and the reference opening is the expansion valve in the prior art. The opening degree is reserved (for example, the reserved opening degree is 24P, where P is the opening pulse unit, the same below), when the running time of the heating mode is greater than 10min, the heating operation of the air conditioner has reached a stable state, and then control the The opening degree of the expansion valve corresponding to the indoor unit is adjusted to the reserved opening degree of the expansion valve; of course, the settings of the time threshold and the reference opening degree are not static, and those skilled in the art can also adjust them. For example, the time threshold can also be 3min, 5min, or 15min, etc., as long as the heating operation of the multi-unit air conditioning system should be stable after the operation of this time; for example, the reference opening degree can also be any value near the reserved opening degree .
S300、基于目标参数，对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整；例如，获取每个室内机盘管的盘管温度，并针对每个室内机的盘管温度确定对室内机所对应的膨胀阀的开度进行调整，以便精确控制每个室内机的噪音。S300. Based on the target parameter, adjust the opening degree of the expansion valve corresponding to each indoor unit in the standby state; Make sure to adjust the opening degree of the expansion valve corresponding to the indoor unit to precisely control the noise of each indoor unit.
上述描述可以看出，在制热模式下，通过控制处于待机状态的室内机所对应的膨胀阀先调整到基准开度，然后基于目标参数对每个室内机所对应的膨胀阀分别进行调整，本发明的噪音控制方法可以针对每个室内机所在房间的噪音进行单独控制，提高噪音的控制精度和噪音控制效果，使每个处于待机状态的室内机所处的房间保持安静，提高用户体验。It can be seen from the above description that in the heating mode, the expansion valve corresponding to the indoor unit in the standby state is controlled to be adjusted to the reference opening first, and then the expansion valve corresponding to each indoor unit is adjusted based on the target parameters. The noise control method of the present invention can individually control the noise of the room where each indoor unit is located, improve the noise control precision and noise control effect, keep the room where each indoor unit in the standby state is located quiet, and improve user experience.
参照图2，图2为本发明的基于目标参数对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整的方法流程示意图。Referring to FIG. 2 , FIG. 2 is a schematic flowchart of the method of the present invention for adjusting the opening degree of the expansion valve corresponding to each indoor unit in the standby state based on target parameters.
如图2所示，在一种可能的实施方式中，步骤S300进一步包括：As shown in FIG. 2, in a possible implementation manner, step S300 further includes:
S310、获取室外环境温度与每个室内机盘管的实际盘管温度；如通过在室外机和室内机的盘管上分别设置温度传感器的方式获取室外环境温度和实际盘管温度。S310 , acquiring the outdoor ambient temperature and the actual coil temperature of each indoor unit coil; for example, acquiring the outdoor ambient temperature and the actual coil temperature by setting temperature sensors on the coils of the outdoor unit and the indoor unit respectively.
S320、基于室外环境温度与目标盘管温度的对应关系，确定室内机盘管的目标盘管温度；在一种可能的实施方式中，目标盘管温度可以基于实验数据得到，该目标盘管温度代表在某一室外环境温度范围内，为使处于待机状态的室内机不产生噪音而将膨胀阀的开度调节至最佳开度时，所对应的该室内机盘管的温度。例如，本发明的发明人基于大量实验得出室外环境温度与目标盘管温度的对照表，即表1：S320. Determine the target coil temperature of the indoor unit coil based on the corresponding relationship between the outdoor ambient temperature and the target coil temperature; in a possible implementation, the target coil temperature may be obtained based on experimental data, and the target coil temperature Represents the temperature of the indoor unit coil when the opening of the expansion valve is adjusted to the optimum opening in order to prevent the indoor unit in the standby state from generating noise within a certain outdoor ambient temperature range. For example, the inventor of the present invention has obtained a comparison table between the outdoor ambient temperature and the target coil temperature based on a large number of experiments, namely Table 1:
表1Table 1
S330、基于目标盘管温度和每个实际盘管温度，对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整。S330 , based on the target coil temperature and each actual coil temperature, adjust the opening degree of the expansion valve corresponding to each indoor unit in the standby state.
在一种可能的实施方式中，调整方式可以进一步包括：In a possible implementation manner, the adjustment method may further include:
i)在实际盘管温度小于目标盘管温度时，控制实际盘管温度所对应的室内机的膨胀阀的开度增大第一设定开度。优选地，第一设定开度可以为2P。例如，室内机所对应的膨胀阀的开度处于保留开度24P，此时若获取到室外环境温度为0℃(所对应的目标盘管温度为38℃)、实际盘管温度为30℃，则证明盘管内的冷媒堆积过多，此时控制膨胀阀的开度在24P的基础上增加2P，达到26P，可以使冷媒的流量与膨胀阀的开度相适应，保证冷媒回流的基础上，降低室内机产生的噪音。i) When the actual coil temperature is lower than the target coil temperature, the opening degree of the expansion valve of the indoor unit corresponding to the actual coil temperature is controlled to increase by the first set opening degree. Preferably, the first set opening degree may be 2P. For example, the opening degree of the expansion valve corresponding to the indoor unit is at the reserved opening degree of 24P. At this time, if the obtained outdoor ambient temperature is 0°C (the corresponding target coil temperature is 38°C) and the actual coil temperature is 30°C, It proves that there is too much refrigerant in the coil. At this time, the opening of the expansion valve is controlled to increase by 2P on the basis of 24P to reach 26P, which can make the flow of the refrigerant adapt to the opening of the expansion valve and ensure the return of the refrigerant. Reduce the noise generated by the indoor unit.
ii)在实际盘管温度大于目标盘管温度时，控制实际盘管温度所对应的室内机的膨胀阀的开度减小第一设定开度。例如，室内机所对应的膨胀阀的开度处于保留开度24P，此时若获取到室外环境温度为0℃(所对应的目标盘管温度为38℃)、实际盘管温度为42℃，则证明盘管内的冷媒较少，保持原有开度容易产生噪音，此时控制膨胀阀的开度在24P的基础上减小2P，达到22P，可以使冷媒的流量与膨胀阀的开度相适应，降低冷媒流过膨胀阀时产生的噪音。ii) When the actual coil temperature is greater than the target coil temperature, control the opening degree of the expansion valve of the indoor unit corresponding to the actual coil temperature to decrease the first set opening degree. For example, the opening degree of the expansion valve corresponding to the indoor unit is at the reserved opening degree of 24P. At this time, if the obtained outdoor ambient temperature is 0°C (the corresponding target coil temperature is 38°C) and the actual coil temperature is 42°C, It proves that there is less refrigerant in the coil, and maintaining the original opening is easy to generate noise. At this time, the opening of the expansion valve is controlled to be reduced by 2P on the basis of 24P, reaching 22P, which can make the flow of the refrigerant and the opening of the expansion valve match. Adapt to reduce the noise generated when the refrigerant flows through the expansion valve.
进一步优选地，上述“基于目标参数，对每个处于待机状态的室内机所对应的膨胀阀的开度进行调整”步骤每隔第一设定时间进行一次。如每隔1分钟进行一次。当然，也可以每2min、3min或5min进行一次，该隔离的时间设置的越短越能够提高本控制方法的控制精度。Further preferably, the above-mentioned step of "adjusting the opening degree of the expansion valve corresponding to each indoor unit in the standby state based on the target parameter" is performed every first set time. Such as every 1 minute. Of course, it can also be performed once every 2 min, 3 min or 5 min, and the shorter the isolation time is set, the better the control accuracy of the control method can be.
进一步优选地，还可以对膨胀阀的调整范围设置最小设定开度和最大设定开度，以进一步提高控制精度。如最小设定开度可以为16P，以避免膨胀阀的开度小于16P时可能造成冷媒堆积的问题；最大设定开度可以为75P，以避免当膨胀阀开度大于75P时可能使室内机再次产生噪音的问题。当然，上述最小设定开度和最大设定开度的数值只是一种具体的设置方式，在不偏离本发明原理的条件下，本领域技术人员可以对该数值进行调整，以便使本发明适应更加具体的应用场景。Further preferably, a minimum set opening degree and a maximum set opening degree can also be set for the adjustment range of the expansion valve, so as to further improve the control accuracy. For example, the minimum set opening can be 16P to avoid the problem of refrigerant accumulation when the expansion valve opening is less than 16P; the maximum set opening can be 75P to avoid the indoor unit when the expansion valve opening is greater than 75P. Again the problem of noise. Of course, the numerical values of the above-mentioned minimum set opening degree and maximum set opening degree are only a specific setting method, and those skilled in the art can adjust the numerical values without departing from the principle of the present invention, so as to adapt the present invention to more specific application scenarios.
此外，为了增加多联式空调系统的安全性，防止在使用本控制方法时空调系统出现冷媒缺失的情况，在一种可能的实施方式中，本发明的噪音控制方法还可以设置如下步骤：In addition, in order to increase the safety of the multi-connected air-conditioning system and prevent the lack of refrigerant in the air-conditioning system when the control method is used, in a possible implementation manner, the noise control method of the present invention may also be provided with the following steps:
当任一室内机由运行状态切换为待机状态时，室外机的控制芯片控制该室内机的膨胀阀在第二设定时间内以第一目标开度开启，并在持续第二设定时间后，将该室内机的状态切换为待机状态。例如，在某一室内机由制热运行切换为待机状态时，室外机的控制芯片强制该室内机所对应的膨胀阀在1min内保持350P的开度，以使该室内机中的冷媒在1min时间内充分回流，避免该室内机在进入待机状态时立即关闭膨胀阀而导致的冷媒堆积的问题。1min后，控制芯片控制该室外机的状态切换为待机状态，使该室外机参与前述噪音控制方法的判定。When any indoor unit is switched from the running state to the standby state, the control chip of the outdoor unit controls the expansion valve of the indoor unit to open at the first target opening within the second set time, and after the second set time to switch the state of the indoor unit to the standby state. For example, when an indoor unit is switched from heating operation to standby state, the control chip of the outdoor unit forces the expansion valve corresponding to the indoor unit to keep the opening degree of 350P within 1 minute, so that the refrigerant in the indoor unit can be kept at 350P for 1 minute. It can fully recirculate within a certain time to avoid the problem of refrigerant accumulation caused by immediately closing the expansion valve when the indoor unit enters the standby state. After 1 minute, the control chip controls the state of the outdoor unit to switch to a standby state, so that the outdoor unit participates in the determination of the aforementioned noise control method.
当室外机的压缩机排气温度不小于阈值温度、或者室外机所对应的膨胀阀的开度不小于阈值开度并持续第三设定时间时，控制所有待机室内机所对应的膨胀阀同时在第四设定时间内以第二目标开度开启。例如，当室外机的压缩机排气温度达到或超过100℃，或者室外机所对应的膨胀阀的开度达到或超过400P并持续1min时，证明室外机的冷媒量出现缺失，此时将所有待机室内机所对应的膨胀阀同时开启到88P，以便让这些室内机管路中积攒的冷媒及时回流，避免冷媒缺失的情况出现，提高空调系统的安全性。When the compressor discharge temperature of the outdoor unit is not less than the threshold temperature, or the opening degree of the expansion valve corresponding to the outdoor unit is not less than the threshold opening degree and continues for the third set time, the expansion valves corresponding to all standby indoor units are controlled at the same time. It is turned on at the second target opening within the fourth set time. For example, when the exhaust temperature of the compressor of the outdoor unit reaches or exceeds 100°C, or the opening degree of the expansion valve corresponding to the outdoor unit reaches or exceeds 400P for 1 minute, it proves that the refrigerant volume of the outdoor unit is missing. The expansion valve corresponding to the standby indoor unit is opened to 88P at the same time, so that the refrigerant accumulated in the pipeline of these indoor units can be returned in time to avoid the lack of refrigerant and improve the safety of the air conditioning system.
当然，上述两种控制方法中的具体参数仅仅是作为示例呈现，本领域技术人员可以根据实际的应用场景对其做出灵活调整，以提高空调系统的安全性能。Of course, the specific parameters in the above two control methods are only presented as examples, and those skilled in the art can flexibly adjust them according to actual application scenarios to improve the safety performance of the air conditioning system.
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。The present invention also provides a controller of a multi-connected air conditioning system, which can execute the aforementioned noise control method. This controller may physically be one set in the outdoor unit (such as the aforementioned control chip), or may be one for each indoor unit, may be a controller specially used to execute the method of the present invention, or may be a general-purpose controller. A functional module or functional unit of a controller.
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，针对每个处于待机状态的室内机的目标参数调节所对应膨胀阀的开度，使所有室内机所对应的膨胀阀开度与冷媒的流量相适应，大大减小甚至消除冷媒在这些室内机内流动产生的噪音。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。To sum up, using the above noise control method, the present invention can adjust the opening degree of the corresponding expansion valve for the target parameter of each indoor unit in the standby state when the heating indoor unit is in standby, so that the corresponding expansion valve of all indoor units can be adjusted. The opening of the expansion valve is adapted to the flow of the refrigerant, which greatly reduces or even eliminates the noise generated by the refrigerant flowing in these indoor units. Moreover, the adjustment process of the present invention does not need to change the original structure of the air-conditioning system, thereby saving the cost of the whole machine. That is to say, the above control method solves the problems of low control precision and high cost in the technical solution of replacing the large-diameter electronic expansion valve to solve the standby noise of the heating indoor unit in the prior art, and improves the user experience.
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。So far, the technical solutions of the present invention have been described with reference to the preferred embodiments shown in the accompanying drawings, however, those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
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| CN110332648B (en) * | 2019-07-22 | 2021-12-21 | 宁波奥克斯电气股份有限公司 | Control method and device of electronic expansion valve and multi-connected air conditioning system |
| CN110567128A (en) * | 2019-09-23 | 2019-12-13 | 宁波奥克斯电气股份有限公司 | multi-split air conditioner and control method thereof |
| CN110579010B (en) * | 2019-09-27 | 2021-08-27 | 宁波奥克斯电气股份有限公司 | Control method and control device for electronic expansion valve of multi-split internal machine and air conditioner |
| CN111076352B (en) * | 2019-12-30 | 2021-07-20 | 宁波奥克斯电气股份有限公司 | Control method, device, air conditioner and storage medium for multi-line electronic expansion valve |
| CN113494764A (en) * | 2020-04-08 | 2021-10-12 | 广东美的制冷设备有限公司 | Control method of multi-split air conditioner, multi-split air conditioner and storage medium |
| CN111426038B (en) * | 2020-04-20 | 2021-03-12 | 珠海格力电器股份有限公司 | Air conditioner noise control method and device and multi-split air conditioning system |
| CN113531856A (en) * | 2020-04-22 | 2021-10-22 | 青岛海尔空调电子有限公司 | Multi-connected air-conditioning system and refrigerant flow control method of multi-connected air-conditioning system |
| CN113959083B (en) * | 2021-10-18 | 2022-10-18 | 上海儒竞智控技术有限公司 | Electronic expansion valve opening pulse measuring method, system, medium and air conditioner multi-split air conditioner |
| CN114198871B (en) * | 2021-12-17 | 2023-03-28 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner, control method and device thereof and readable storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002340390A (en) * | 2001-05-18 | 2002-11-27 | Fujitsu General Ltd | Air conditioner for multiple rooms |
| KR20030094562A (en) * | 2002-06-04 | 2003-12-18 | 엘지전자 주식회사 | Electric expension valve control method for multi type airconditioner |
| KR20040090326A (en) * | 2003-04-17 | 2004-10-22 | 엘지전자 주식회사 | Coolant noise escape method of indoor unit for multi airconditioner |
| CN1645007A (en) * | 2004-01-19 | 2005-07-27 | Lg电子株式会社 | Method for controlling multi-type air conditioner |
| JP2007303696A (en) * | 2006-05-09 | 2007-11-22 | Matsushita Electric Ind Co Ltd | Operation control method of multi-chamber type air conditioner |
| JP2011257031A (en) * | 2010-06-07 | 2011-12-22 | Panasonic Corp | Method for controlling air conditioner |
| CN104067064A (en) * | 2012-04-06 | 2014-09-24 | 三菱重工业株式会社 | Control device, method, and program, and multi-type air conditioning system comprising same |
| CN104501303A (en) * | 2014-11-24 | 2015-04-08 | 广东美的制冷设备有限公司 | Multi-split air conditioner and refrigerant circulation control method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2503393Y (en) * | 2001-10-31 | 2002-07-31 | 上海日立电器有限公司 | Intelligent distributor for refrigerant flow |
| JP4151625B2 (en) * | 2004-07-21 | 2008-09-17 | 松下電器産業株式会社 | Air conditioner |
| CN104697120A (en) * | 2015-03-24 | 2015-06-10 | 广东美的暖通设备有限公司 | VRV (Varied Refrigerant Volume) system and noise reduction control method thereof |
-
2017
- 2017-12-01 CN CN201711250045.4A patent/CN108224689B/en active Active
-
2018
- 2018-05-24 WO PCT/CN2018/088274 patent/WO2019104966A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002340390A (en) * | 2001-05-18 | 2002-11-27 | Fujitsu General Ltd | Air conditioner for multiple rooms |
| KR20030094562A (en) * | 2002-06-04 | 2003-12-18 | 엘지전자 주식회사 | Electric expension valve control method for multi type airconditioner |
| KR20040090326A (en) * | 2003-04-17 | 2004-10-22 | 엘지전자 주식회사 | Coolant noise escape method of indoor unit for multi airconditioner |
| CN1645007A (en) * | 2004-01-19 | 2005-07-27 | Lg电子株式会社 | Method for controlling multi-type air conditioner |
| JP2007303696A (en) * | 2006-05-09 | 2007-11-22 | Matsushita Electric Ind Co Ltd | Operation control method of multi-chamber type air conditioner |
| JP2011257031A (en) * | 2010-06-07 | 2011-12-22 | Panasonic Corp | Method for controlling air conditioner |
| CN104067064A (en) * | 2012-04-06 | 2014-09-24 | 三菱重工业株式会社 | Control device, method, and program, and multi-type air conditioning system comprising same |
| CN104501303A (en) * | 2014-11-24 | 2015-04-08 | 广东美的制冷设备有限公司 | Multi-split air conditioner and refrigerant circulation control method |
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|---|---|
| WO2019104966A1 (en) | 2019-06-06 |
| CN108224689A (en) | 2018-06-29 |
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Effective date of registration: 20201113 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. Patentee after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. |