CN115095964B - 热回收多联机系统及其运行方法 - Google Patents
热回收多联机系统及其运行方法 Download PDFInfo
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- 238000011084 recovery Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 154
- 238000010257 thawing Methods 0.000 claims abstract description 30
- 239000008236 heating water Substances 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000005057 refrigeration Methods 0.000 claims description 5
- 238000004378 air conditioning Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 20
- 238000005265 energy consumption Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- F24D5/00—Hot-air central heating systems; Exhaust gas central heating systems
- F24D5/12—Hot-air central heating systems; Exhaust gas central heating systems using heat pumps
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- F24D19/00—Details
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Abstract
本发明提供一种热回收多联机系统及其运行方法,系统包括:温度获取模块,获取室内环境温度、室外环境温度及室内机盘管温度;检测模块,检测热回收多联机系统所处的运行模式;判断模块,热回收多联机系统处于制热水模式,且在化霜和回油结束后,判断模块根据室外环境温度与室外温度预设值的对比结果和/或室内机盘管温度与室内机盘管温度预设值的对比结果判断是否发送制热能需;热回收多联机系统处于正常运行过程中且接收到制热水需求时,判断模块根据室内环境温度与室内温度预设值的对比结果和/或室内机盘管温度与室内机盘管温度预设值的对比结果判断是否发送制热能需。本发明通过综合判断是否发送制热能需,兼顾制热速度及化霜效果。
Description
技术领域
本发明涉及空调领域,具体为一种热回收多联机系统及其运行方法。
背景技术
热回收系统运行时制热水效率很高,不间断给水力模块加热,但是也存在以下问题:室外机化霜时,由于室内机低压很低,温度很低造成室外机化霜时间很长且化霜不干净。
低温情况下,运行完制热水、生活热水后,用空调内机进行化霜,在化霜过程中吸收的热量小,同时化霜过程中低压低则高压也低则外机化霜过程时间长且化霜不干净,室内机化霜后翅片结冰,这是第一次化霜后结果,那么系统连续运行,室内机结冰会越来越多,影响开空调制热效果;而如果一直给室内机预热,很多冷媒流到室内机,则流到水力模块冷媒少,则制热水效果差,排气温度高。
发明内容
针对以上问题,本发明提供了一种热回收多联机系统及其运行方法,通过结合系统运行模式,室内、外环境温度与室内机盘管温度综合判断是否发送制热能需,能够兼顾制热速度及化霜效果。
本发明提供一种热回收多联机系统,包括室内机、室外机及水力模块,还包括:温度获取模块,获取室内环境温度、室外环境温度及室内机盘管温度;检测模块,检测热回收多联机系统所处的运行模式;判断模块,热回收多联机系统处于制热水模式,且在化霜和回油结束后,判断模块根据室外环境温度与室外温度预设值的对比结果和/或室内机盘管温度与室内机盘管温度预设值的对比结果判断是否发送制热能需;热回收多联机系统处于正常运行过程中且接收到制热水需求时,判断模块根据室内环境温度与室内温度预设值的对比结果和/或室内机盘管温度与室内机盘管温度预设值的对比结果判断是否发送制热能需,正常运行为制冷运行或制热运行。
根据该技术方案,制热水模式时,在化霜和回油结束后,室内机盘管温度达到最低,结合室内机盘管温度,在室外机化霜后,按需发送制热能需给室内机除霜,克服了室内机结冰越来越严重的问题,提高化霜效果;且结合室内机盘管温度智能判断是否给室内机进行预热,能够兼顾室内机制热效果及制热水效果,不浪费系统能源。正常运行模式时根据室内环境温度和室内机盘管温度判断是否发送制热能需,兼顾室内机制热效果及制热水效果的同时,有利于降低能耗。
本发明的可选技术方案中,室外环境温度不小于室外温度预设值,不发送制热能需;室外环境温度小于室外温度预设值,根据室内机盘管温度判断是否发送制热能需。
根据该技术方案,室外环境温度不小于室外温度预设值时,室内机大概率不会结霜,因此不发送制热能需,有利于降低系统能耗;室外环境温度小于室外温度预设值时,进一步根据室内机盘管温度判断是否发送制热能需,能够按需发送制热能需对室内机盘管进行预热,使室内机盘管温度保持在规定范围内,保证制热水效果,在运行完制热水后,规定范围的室内机盘管温度能够保证室内机温升速度,提高室内机的快速制热能力,在对室内机化霜时,合适的室内机温升速度有利于提高化霜效率,缩短化霜时间,提高化霜效果。
本发明的可选技术方案中,室内环境温度不小于第一室内温度预设值,不发送制热能需;室内环境温度处于规定温度范围,根据室内机盘管温度判断是否发送制热能需;室内环境温度小于第二温度预设值,每间隔规定时间发送一次制热能需。
根据该技术方案,室内环境温度不小于第一室内温度预设值时,室内机大概率不结霜,因此不发送制热能需,有利于降低系统能耗;室内环境温度处于规定温度范围时结合室内机盘管温度判断是否发送制热能需,提高制热能需发送的控制准确性以及室内机结霜干预的准确度,实现按需给室内机预热,节约系统能耗;在室内环境温度小于第二温度预设值时,室内机结霜的概率较大,因此间隔规定时间即发送一次制热能需,使得室内机在结霜之后能够及时进行干预,提高化霜效果。
本发明的可选技术方案中,室内机盘管温度低于室内机盘管温度预设值,发送制热能需;室内机盘管温度大于室内机盘管温度预设值,不发送制热能需。
根据该技术方案,室内机盘管温度高于室内机盘管温度预设值时,室内机温升就快,系统在制热的时候就会快速突破防冷风限制而吹出热风即可快速制热,无需发送制热能需,有利于降低系统能耗;室内机盘管温度低于室内机盘管温度预设值时,室内机温升较慢,发送制热能需,有利于提高制热效率。
本发明的可选技术方案中,室内机包括并联设置的多个子室内机及与各子室内机对应的室内风机,各子室内机的入口分别串联电子膨胀阀;热回收多联机系统还包括控制模块,控制模块控制接收到制热需求的子室内机对应的电子膨胀阀开启至规定开度、对应的室内风机关闭;控制未接收到制热需求的子室内机对应的电子膨胀阀关闭、对应的室内风机关闭;及在所有子室内机均未接收到制热需求时,控制关闭室外机;在任意一台子室内机接收到制热需求时,控制开启室外机。
根据该技术方案,子室内机接到制热需求时,对应关闭室内风机、开启电子膨胀阀,有利于提高制热效率,同时开启室外机,保证系统的正常运行;任意子室内机均为接收到制热需求时,关闭室外机,降低系统能耗。
本发明另提供一种热回收多联机系统的运行方法,热回收多联机系统包括室内机、室外机及水力模块,热回收多联机系统的运行方法包括以下步骤:获取室内环境温度、室外环境温度及室内机盘管温度;检测热回收多联机系统所处的运行模式;热回收多联机系统处于制热水模式,且在化霜和回油结束后,根据室外环境温度与室外温度预设值的对比结果和/或室内机盘管温度与室内机盘管温度预设值的对比结果判断是否发送制热能需;热回收多联机系统处于正常运行过程中且接收到制热水需求时,根据室内环境温度与室内温度预设值的对比结果和/或室内机盘管温度与室内机盘管温度预设值的对比结果判断是否发送制热能需,正常运行为制冷运行或制热运行。
本发明的可选技术方案中,室外环境温度不小于室外温度预设值,不发送制热能需;室外环境温度小于室外温度预设值,根据室内机盘管温度判断是否发送制热能需。
本发明的可选技术方案中,室内环境温度不小于第一室内温度预设值,不发送制热能需;室内环境温度处于规定温度范围,根据室内机盘管温度判断是否发送制热能需;室内环境温度小于第二温度预设值,每间隔规定时间发送一次制热能需。
本发明的可选技术方案中,根据室内机盘管温度判断是否发送制热能需的步骤包括:
室内机盘管温度低于室内机盘管温度预设值,发送制热能需;室内机盘管温度大于室内机盘管温度预设值,不发送制热能需。
本发明的可选技术方案中,室内机包括并联设置的多个子室内机及与各子室内机对应的室内风机,各子室内机的入口分别串联电子膨胀阀;
热回收多联机系统还包括控制模块,控制模块控制接收到制热需求的子室内机对应的电子膨胀阀开启至规定开度、对应的室内风机关闭;控制未接收到制热需求的子室内机对应的电子膨胀阀关闭、对应的室内风机关闭;及在所有子室内机均未接收到制热需求时,控制关闭室外机;在任意一台子室内机接收到制热需求时,控制开启室外机。
附图说明
图1为本发明实施方式中热回收多联机系统结构示意图。
图2为本发明实施方式中热回收多联机系统模块化的结构示意图。
图3为本发明实施方式中热回收多联机系统根据室内机盘管温度判断的坐标示意图。
图4为本发明实施方式中热回收多联机系统的运行方法的流程示意图。
图5为本发明实施方式中热回收多联机系统的运行方法的判断流程示意图。
附图标记:
室内机1;子室内机11;室外机2;压缩机21;第一四通阀22;第二四通阀23;室外换热器24;室外风机25;过冷器26;气液分离器27;单向阀281;单向阀282;单向阀283;水力模块3;换热水箱31;节流元件EXV1;节流元件EXV2;节流元件EXV3;温度获取模块4;检测模块5;判断模块6;控制模块7;室内环境温度T1;室内机盘管温度T2。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
请参阅图1、图2所示,本发明提供一种热回收多联机系统,包括室内机1、室外机2及水力模块3,还包括:温度获取模块4,获取室内环境温度T1、室外环境温度及室内机盘管温度T2;检测模块5,检测热回收多联机系统所处的运行模式;判断模块6,热回收多联机系统处于制热水模式,且在化霜和回油结束后,判断模块6根据室外环境温度与室外温度预设值的对比结果和/或室内机盘管温度T2与室内机盘管温度预设值的对比结果判断是否发送制热能需;热回收多联机系统处于正常运行过程中且接收到制热水需求时,判断模块6根据室内环境温度T1与室内温度预设值的对比结果和/或室内机盘管温度T2与室内机盘管温度预设值的对比结果判断是否发送制热能需,正常运行为制冷运行或制热运行。
通过上述方式,制热水模式时,在化霜和回油结束后,室内机盘管温度T2达到最低,结合室内机盘管温度T2,在室外机2化霜后,按需发送制热能需给室内机1除霜,克服了室内机1结冰越来越严重的问题,提高化霜效果;且结合室内机盘管温度T2智能判断是否给室内机1进行预热,能够兼顾室内机1制热效果及制热水效果,不浪费系统能源。正常运行模式时根据室内环境温度T1和室内机盘管温度T2判断是否发送制热能需,兼顾室内机1制热效果及制热水效果的同时,有利于降低能耗。
本发明的优选实施方式中,室内机1包括并联设置的多个子室内机11及与各子室内机11对应的室内风机(图中未示出),各子室内机11的入口分别串联电子膨胀阀12。
室外机2包括压缩机21、第一四通阀22、第二四通阀23、多个节流元件(EXV1、EXV2、EXV3)、室外换热器24、室外风机25、过冷器26、气液分离器27及单向阀(281、282、283),水力模块3包括换热水箱31及冷媒流路。
温度获取模块4分别为用于检测室内环境温度T1、室外环境温度及室内机盘管温度T2的温度传感器。
本发明实施方式中,制热能需可以为能需数值,也可以是制热能需信号;正常运行模式通常为制冷模式、制热模式。
本发明的优选实施方式中,在制热水模式下,室外环境温度不小于室外温度预设值,不发送制热能需;室外环境温度小于室外温度预设值,根据室内机盘管温度T2判断是否发送制热能需。
通过上述方式,室外环境温度不小于室外温度预设值时,室内机大概率不会结霜,因此不发送制热能需,有利于降低系统能耗;室外环境温度小于室外温度预设值时,进一步根据室内机盘管温度T2判断是否发送制热能需,能够按需发送制热能需对室内机盘管进行预热,使室内机盘管温度T2保持在规定范围内,保证制热水效果,在运行完制热水后,规定范围的室内机盘管温度T2能够保证室内机温升速度,提高室内机1的快速制热能力,在对室内机化霜时,合适的室内机温升速度有利于提高化霜效率,缩短化霜时间,提高化霜效果。
进一步地,如图3所示,室外环境温度T1小于室外温度预设值,根据室内机盘管温度T2判断是否发送制热能需的步骤包括:
室内机盘管温度T2低于室内机盘管温度预设值(如20℃),发送制热能需;
室内机盘管温度T2大于室内机盘管温度预设值,不发送制热能需。
通过上述方式,室内机盘管温度T2高于室内机盘管温度预设值时,室内机温升就快,系统在制热的时候就会快速突破防冷风限制而吹出热风即可快速制热,无需发送制热能需,有利于降低系统能耗;室内机盘管温度T2低于室内机盘管温度预设值时,室内机1温升较慢,发送制热能需,有利于提高制热效率。
更进一步地,热回收多联机系统还包括控制模块7,控制模块7控制电子膨胀阀12、室内风机及室外机2的启闭,具体地,控制模块7控制接收到制热需求的子室内机11对应的电子膨胀阀12开启至规定开度、对应的室内风机关闭;控制未接收到制热需求的子室内机11对应的电子膨胀阀12关闭、对应的室内风机关闭;在所有子室内机11均未接收到制热需求时,控制关闭室外机2;在任意一台子室内机11接收到制热需求时,控制开启室外机2。
通过上述方式,子室内机11接到制热需求时,对应关闭室内风机、开启电子膨胀阀12,有利于提高制热效率,同时开启室外机2,保证系统的正常运行;任意子室内机11均为接收到制热需求时,关闭室外机2,降低系统能耗。
本发明的优选实施方式中,在正常运行模式下制热水时,室内环境温度T1不小于第一室内温度预设值,不发送制热能需;室内环境温度T1处于规定温度范围,根据室内机盘管温度T2判断是否发送制热能需;室内环境温度T1小于第二温度预设值,每间隔规定时间发送一次制热能需。
通过上述方式,室内环境温度T1不小于第一室内温度预设值时,室内机大概率不结霜,因此不发送制热能需,有利于降低系统能耗;室内环境温度T1处于规定温度范围时结合室内机盘管温度T2判断是否发送制热能需,提高制热能需发送的控制准确性以及室内机1结霜干预的准确度,实现按需给室内机1预热,节约系统能耗;在室内环境温度T1小于第二温度预设值时,室内机1结霜的概率较大,因此间隔规定时间即发送一次制热能需,使得室内机1在结霜之后能够及时进行干预,提高化霜效果。
进一步地,室内环境温度T1处于规定温度范围,根据室内机盘管温度T2判断是否发送制热能需的步骤包括:
室内机盘管温度T2低于室内机盘管温度预设值,发送制热能需;室内机盘管温度T2大于室内机盘管温度预设值,不发送制热能需。
通过上述方式,室内机盘管温度T2高于室内机盘管温度预设值时,室内机1温升就快,系统在制热的时候就会快速突破防冷风限制而吹出热风即可快速制热,无需发送制热能需,有利于降低系统能耗;室内机盘管温度T2低于室内机盘管温度预设值时,室内机1温升较慢,发送制热能需,有利于提高制热效率。
更进一步地,控制模块7控制接收到制热需求的子室内机11对应的电子膨胀阀12开启至规定开度、对应的室内风机关闭;控制未接收到制热需求的子室内机11对应的电子膨胀阀12关闭、对应的室内风机关闭;在所有子室内机11均未接收到制热需求时,控制关闭室外机2;在任意一台子室内机11接收到制热需求时,控制开启室外机2。
室内环境温度T1小于第二温度预设值,每间隔规定时间发送一次制热能需,对于接收到制热能需的子室内机11,控制模块7控制子室内机11对应的电子膨胀阀12开启至规定开度、对应的室内风机关闭;在所有子室内机11均未接收到制热需求时,控制关闭室外机2;在任意一台子室内机11接收到制热需求时,控制开启室外机2。
请参阅图4所示,对应于本发明的热回收多联机系统,本发明提供一种上述热回收多联机系统的运行方法,包括以下步骤:
获取室内环境温度T1、室外环境温度及室内机盘管温度T2;
检测热回收多联机系统所处的运行模式;
热回收多联机系统处于制热水模式,且在化霜和回油结束后,根据室外环境温度与室外温度预设值的对比结果和/或室内机盘管温度T2与室内机盘管温度预设值的对比结果判断是否发送制热能需;
热回收多联机系统处于正常运行过程中且接收到制热水需求时,根据室内环境温度T1与室内温度预设值的对比结果和/或室内机盘管温度T2与室内机盘管温度预设值的对比结果判断是否发送制热能需。
如图5所示,本发明的优选实施方式中,室外环境温度不小于室外温度预设值,不发送制热能需;室外环境温度小于室外温度预设值,根据室内机盘管温度T2判断是否发送制热能需。
进一步地,室外环境温度小于室外温度预设值,根据室内机盘管温度T2判断是否发送制热能需还包括子步骤:
室内机盘管温度T2低于室内机盘管温度预设值,发送制热能需;室内机盘管温度T2大于室内机盘管温度预设值,不发送制热能需。
更进一步地,还包括:接收到制热需求的子室内机11对应的电子膨胀阀12开启至规定开度、对应的室内风机关闭;未接收到制热需求的子室内机11对应的电子膨胀阀12关闭、对应的室内风机关闭;在所有子室内机11均未接收到制热需求时,关闭室外机;在任意一台子室内机11接收到制热需求时,控制开启室外机。
本发明的优选实施方式中,室内环境温度T1不小于第一室内温度预设值,不发送制热能需;室内环境温度T1处于规定温度范围,根据室内机盘管温度T2判断是否发送制热能需;室内环境温度T1小于第二温度预设值,每间隔规定时间发送一次制热能需。
进一步地,室内环境温度T1处于规定温度范围,根据室内机盘管温度T2判断是否发送制热能需进一步包括子步骤:
室内机盘管温度T2低于室内机盘管温度预设值,发送制热能需;室内机盘管温度T2大于室内机盘管温度预设值,不发送制热能需。
更进一步地,还包括:接收到制热需求的子室内机11对应的电子膨胀阀12开启至规定开度、对应的室内风机关闭;未接收到制热需求的子室内机11对应的电子膨胀阀12关闭、对应的室内风机关闭;在所有子室内机11均未接收到制热需求时,关闭室外机;在任意一台子室内机11接收到制热需求时,开启室外机。
以上仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。
Claims (10)
1.一种热回收多联机系统,包括室内机、室外机及水力模块,其特征在于,还包括:
温度获取模块,获取室内环境温度、室外环境温度及室内机盘管温度;
检测模块,检测热回收多联机系统所处的运行模式;
判断模块,所述热回收多联机系统处于制热水模式,且在化霜和回油结束后,所述判断模块根据室外环境温度与室外温度预设值的对比结果和/或所述室内机盘管温度与室内机盘管温度预设值的对比结果判断是否发送制热能需;所述热回收多联机系统处于正常运行过程中且接收到制热水需求时,所述判断模块根据室内环境温度与室内温度预设值的对比结果和/或所述室内机盘管温度与室内机盘管温度预设值的对比结果判断是否发送制热能需,所述正常运行为制冷运行或制热运行。
2.根据权利要求1所述的热回收多联机系统,其特征在于,所述室外环境温度不小于室外温度预设值,不发送制热能需;所述室外环境温度小于室外温度预设值,根据所述室内机盘管温度判断是否发送制热能需。
3.根据权利要求1所述的热回收多联机系统,其特征在于,所述室内环境温度不小于第一室内温度预设值,不发送制热能需;所述室内环境温度处于规定温度范围,根据所述室内机盘管温度判断是否发送制热能需;所述室内环境温度小于第二温度预设值,每间隔规定时间发送一次制热能需。
4.根据权利要求2或3所述的热回收多联机系统,其特征在于,所述室内机盘管温度低于室内机盘管温度预设值,发送制热能需;所述室内机盘管温度大于室内机盘管温度预设值,不发送制热能需。
5.根据权利要求2或3所述的热回收多联机系统,其特征在于,所述室内机包括并联设置的多个子室内机及与各所述子室内机对应的室内风机,各所述子室内机的入口分别串联电子膨胀阀;
所述热回收多联机系统还包括控制模块,所述控制模块控制接收到制热需求的所述子室内机对应的所述电子膨胀阀开启至规定开度、对应的所述室内风机关闭;控制未接收到制热需求的所述子室内机对应的所述电子膨胀阀关闭、对应的所述室内风机关闭;及
在所有所述子室内机均未接收到制热需求时,控制关闭所述室外机;在任意一台所述子室内机接收到制热需求时,控制开启所述室外机。
6.一种热回收多联机系统的运行方法,热回收多联机系统包括室内机、室外机及水力模块,其特征在于,热回收多联机系统的运行方法包括以下步骤:
获取室内环境温度、室外环境温度及室内机盘管温度;
检测热回收多联机系统所处的运行模式;
所述热回收多联机系统处于制热水模式,且在化霜和回油结束后,根据室外环境温度与室外温度预设值的对比结果和/或所述室内机盘管温度与室内机盘管温度预设值的对比结果判断是否发送制热能需;所述热回收多联机系统处于正常运行过程中且接收到制热水需求时,根据室内环境温度与室内温度预设值的对比结果和/或所述室内机盘管温度与室内机盘管温度预设值的对比结果判断是否发送制热能需,所述正常运行为制冷运行或制热运行。
7.根据权利要求6所述的热回收多联机系统的运行方法,其特征在于,所述室外环境温度不小于室外温度预设值,不发送制热能需;所述室外环境温度小于室外温度预设值,根据所述室内机盘管温度判断是否发送制热能需。
8.根据权利要求6所述的热回收多联机系统的运行方法,其特征在于,所述室内环境温度不小于第一室内温度预设值,不发送制热能需;所述室内环境温度处于规定温度范围,根据所述室内机盘管温度判断是否发送制热能需;所述室内环境温度小于第二温度预设值,每间隔规定时间发送一次制热能需。
9.根据权利要求7或8所述的热回收多联机系统的运行方法,其特征在于,所述根据所述室内机盘管温度判断是否发送制热能需的步骤包括:
所述室内机盘管温度低于室内机盘管温度预设值,发送制热能需;所述室内机盘管温度大于室内机盘管温度预设值,不发送制热能需。
10.根据权利要求7或8所述的热回收多联机系统的运行方法,其特征在于,所述室内机包括并联设置的多个子室内机及与各所述子室内机对应的室内风机,各所述子室内机的入口分别串联电子膨胀阀;
所述热回收多联机系统还包括控制模块,所述控制模块控制接收到制热需求的所述子室内机对应的所述电子膨胀阀开启至规定开度、对应的所述室内风机关闭;控制未接收到制热需求的所述子室内机对应的所述电子膨胀阀关闭、对应的所述室内风机关闭;及
在所有所述子室内机均未接收到制热需求时,控制关闭所述室外机;在任意一台所述子室内机接收到制热需求时,控制开启所述室外机。
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