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1. 发明授权

US06779380B1 Measuring system for the control of residual dust in safety vacuum cleaners 有权
标题翻译：用于控制安全吸尘器中残留灰尘的测量系统
公开(公告)号：US06779380B1
公开(公告)日：2004-08-24
申请号：US09869614
申请日：2001-08-07
申请人： Wolfgang Nieuwkamp
发明人： Wolfgang Nieuwkamp
IPC分类号： G01N3064
CPC分类号： A47L9/2894 , A47L9/19 , A47L9/2831 , A47L9/2857 , A47L9/2889 , G01N1/2205 , G01N15/0656 , G01N27/60 , G01N2001/2223
摘要： A safety vacuum cleaner including a measuring system for residual dust monitoring, including a housing having an air passage with an inlet, an outlet, and a flow cross section. A turbine is disposed within the air passage and is rotatable to move an air stream through the air passage, the air stream containing dust particles. The turbine is electrically grounded such that electrical charges associated with the particles are removed upon contact of the particles with the turbine. A filter element is disposed within the air passage, and at least one electrode is disposed within the air passage downstream of the turbine, the electrode shaped as a grid covering the flow cross section of the air passage. The electrode conducts an electrical current responsive to contact with uncharged particles and emits a measurement signal indicative of the amount of the particles in the air stream.
摘要翻译：一种安全吸尘器，包括用于残留灰尘监测的测量系统，包括具有入口，出口和流动横截面的空气通道的壳体。涡轮机设置在空气通道内并且可旋转以使空气流通过空气通道，空气流含有灰尘颗粒。涡轮机电接地，使得与颗粒与涡轮接触时，与颗粒相关联的电荷被去除。过滤元件设置在空气通道内，并且至少一个电极设置在涡轮机下游的空气通道内，该电极形成为覆盖空气通道的流动横截面的格栅。电极响应于与不带电粒子的接触而传导电流，并发出指示空气流中颗粒量的测量信号。

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