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    • 2. 发明申请
    • Suction nozzle for a vacuum cleaner, comprising a dust flow display device
    • 一种真空吸尘器吸嘴,包括一尘埃流显示装置
    • US20070180648A1
    • 2007-08-09
    • US10598007
    • 2005-02-01
    • Klemens AndrupDiethard BeckerSeyfettin KaraOliver LiebigRainer SchultzHeiko StorkStefan TiekoetterCornelius Wolf
    • Klemens AndrupDiethard BeckerSeyfettin KaraOliver LiebigRainer SchultzHeiko StorkStefan TiekoetterCornelius Wolf
    • A47L9/00A47L5/00
    • A47L9/2857A47L9/02A47L9/281
    • The invention relates to a suction nozzle for a vacuum cleaner, that can be connected to a suction pipe and/or a suction tube of the vacuum cleaner. Said suction nozzle (2) comprises a nozzle part that can be connected to the suction pipe or the suction tube of the vacuum cleaner by means of a tubular connection part (2.2). A dust sensor (11) is arranged in the flow path of the vacuum cleaner, the signals thereof being evaluated by a battery-operated electronic control device that can be activated by a low-pressure switch. During operation, said control device controls a display device (9,16) displaying the dust flow. The control device, the low-pressure switch, the display elements (9,16) displaying the dust flow, and a battery compartment (8) for receiving the batteries are arranged in a housing (7) formed on the upper side of the tubular connection part (2.2). The dust sensor is arranged beneath the housing (7), inside the upper region of the connection part (2.2), in the dust air stream. Said arrangement can be used to create an easily visible ergonomically favourable dust flow display. A mounting position that is advantageous in terms of flow is also provided for the dust sensor. Fine dust particles can still not be reliably detected with the piezoelectric sensor, enabling the degree of purity to be monitored in an actively functional manner.
    • 本发明涉及一种用于真空吸尘器的吸嘴,其能够连接到真空吸尘器的抽吸管和/或抽吸管。 所述吸嘴(2)包括可通过管状连接部分(2.2)连接到真空吸尘器的吸入管或吸管的喷嘴部分。 尘埃传感器(11)布置在真空吸尘器的流路中,其信号由可由低压开关启动的电池供电的电子控制装置评估。 在操作期间,所述控制装置控制显示灰尘流的显示装置(9,16)。 控制装置,低压开关,显示尘埃流的显示元件(9,16)和用于接收电池的电池室(8)布置在壳体(7)中,壳体(7)形成在管状的上侧 连接部分(2.2)。 灰尘传感器布置在壳体(7)的下方,位于连接部分(2.2)的上部区域内,在灰尘空气流中。 所述布置可用于产生易于看到的符合人体工程学的有利的灰尘流显示。 对于尘埃传感器也提供了对流动有利的安装位置。 用压电传感器仍然无法可靠地检测细粉尘颗粒,从而可以以积极的方式监测纯度。