METHOD AND FLUIDIC APPARATUS FOR GENERATING PULSED AND OSCILLATING AIR FLOW FOR SURFACE CLEANING AND SWEEPING
    1.
    发明公开
    METHOD AND FLUIDIC APPARATUS FOR GENERATING PULSED AND OSCILLATING AIR FLOW FOR SURFACE CLEANING AND SWEEPING 审中-公开
    方法和流体对于脉冲式和振动气流,让表面清洁和-SWEEPING

    公开(公告)号:EP2983829A1

    公开(公告)日:2016-02-17

    申请号:EP14778885.5

    申请日:2014-04-03

    IPC分类号: B05B1/08

    摘要: An oscillating or pulsing fluid stream, or flow 18, 132, 300, is produced from a flow of pressurized air by fluidic apparatus 10, 100, 130, 180, 220 in a device 250 configured for use in surface cleaning, sweeping, lawn care applications, and the like. Converging inlet chamber walls 20, 22, define a tapered internal lumen having a smooth narrowing profile is configured to generate at a power nozzle 44 a high velocity stream with minimal pressure drop. Downstream of the power nozzle, first and second control ports CP1, CP2 are in fluid communication with the high velocity stream 46 and with each other via an inertance loop 72 having a lumen of selected cross sectional area and length. The varying air flow is directed through an outlet chamber 14, 134 shaped to produce an oscillating flow 18 or a pulsating flow 132.