本标准规定了医疗设备用半导体热电致冷器件的总体要求、技术要求等内容。总体要求涵盖工作环境(分低温、中温、高温器件)和产品型号(由半导体热电制冷器件符号等六部分组成)。技术要求包括外观尺寸、性能参数、引出线强度等多方面。试验方法涉及外观尺寸、性能参数等测试。还规定了检验规则(出厂检验和型式检验)以及标志、包装等内容,适用于该器件生产与检验。Thisstandardspecifiesthegeneralrequirementsandtechnicalrequirementsforsemiconductorthermoelectriccooling(TEC)devicesusedinmedicalequipment.Thegeneralrequirementscovertheworkingenvironment(dividedintolow-temperature,medium-temperature,andhigh-temperaturedevices)andproductmodels(composedofsixpartsincludingthesymbolforsemiconductorthermoelectriccoolingdevices).Technicalrequirementsincludeappearancedimensions,performanceparameters,leadwirestrength,etc.Thetestmethodsinvolvetestsonappearancedimensionsandperformanceparameters.Italsostipulatesinspectionrules(factoryinspectionandtypeinspection),aswellasmarkingandpackaging,applyingtotheproductionandinspectionofsuchdevices.
本标准涵盖了半导体热电致冷器件多项可靠性测试。包括导线拉力测试,需施加不同方向静负荷并检查引出线;高温存储测试在特定温度下持续一定时间并测试内阻变化;恒定湿热测试于恒温恒湿环境进行;还有电致冷致热交变、耐压力、机械振动等测试,每项测试都有对应的设备、环境、试样制备、步骤及结果评估要求,适用于该器件可靠性测试,确保其在多种条件下性能稳定。Thisstandardcoversmultiplereliabilitytestsforsemiconductorthermoelectriccooling(TEC)devices.Itincludesthewiretensiontest,whichrequiresapplyingstaticloadsindifferentdirectionsandcheckingtheleadwires;thehigh-temperaturestoragetest,whichisconductedataspecifictemperatureforacertainperiodandinvolvestestingtheinternalresistancechange;theconstanttemperatureandhumiditytest,whichiscarriedoutinaconstanttemperatureandhumidityenvironment;aswellastheelectro-coolingandheatingalternatingtest,pressureresistancetest,mechanicalvibrationtest,etc.Eachtesthascorrespondingrequirementsforequipment,environment,samplepreparation,proceduresandresultevaluation,whichisapplicabletothereliabilitytestofthedevicestoensuretheirstableperformanceundervariousconditions.
通过散热控制主机及显示屏总成自动给珀尔帖传感器通电,使珀尔帖传感器通电后使珀尔帖冷端绝缘陶瓷层温度降低,使珀尔帖热端绝缘陶瓷层温度升高,通过珀尔帖冷端绝缘陶瓷层将导热纯铜柱进行降温,从而使导热纯铜柱可以将珀尔帖冷端绝缘陶瓷层的低温更加容易被释放到空气中。通过导热硅脂提高纯铜导热外壳与珀尔帖热端绝缘陶瓷层的导热效果,再通过散热存水外壳内侧的冷水与纯铜导热外壳之间进行热交换,保证珀尔帖热端绝缘陶瓷层的散热效果。通过活性炭吸湿滤芯过滤空气中的水分,可以保证电气控制机箱箱体内的干燥,当活性炭吸湿滤芯需要更换时,通过拆卸可拆卸密封盖内侧的螺丝即可实现将可拆卸密封盖拆卸,然后可以直接将活性炭吸湿滤芯向后侧抽出更换。