Unverified85% confidenceDecision RuleTime unknown
负压吸附力≥2800Pa（配备真空泵而非风机结构）才能稳定吸附垂直外窗，风机式吸附力多在1000-2000Pa仅适合室内固定窗
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Unverified吸附方式选真空泵负压优于风机负压：真空泵吸力≥2800Pa断电后仍可维持30秒以上，风机负压断电即掉落，高层户外作业必须选真空泵机型78% similarUnverified高压软管耐压等级需≥机器额定压力的1.5倍作为安全冗余，家用机常见压力100-160bar，应选标称耐压≥250bar的软管，避免爆管75% similarUnverified集成吊顶浴霸自带的换气模块风量通常仅50-90m³/h且静压低，仅适合短直管小浴室，若管道较长或浴室较大应额外加装独立管道风机而非依赖浴霸换气功能73% similarUnverified手动泵抽式真空盒的真空度普遍可达-0.05至-0.08MPa（约半个大气压），高于按压排气式；按压式仅能排出部分空气无法达到稳定负压，密封效果接近普通保鲜盒73% similarUnverified高压水射机疏通效果取决于压力和流量的组合，家用20-50bar配合8-12L/min即可，单看bar值高但流量小（＜5L/min）实际冲刷力不足72% similar
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