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    • 5. 发明授权
    • Vacuum cleaner
    • 吸尘器
    • US5365633A
    • 1994-11-22
    • US687016
    • 1991-04-18
    • Masao SunagawaYukiji IwaseShigenori Sato
    • Masao SunagawaYukiji IwaseShigenori Sato
    • A47L9/00
    • A47L9/0081
    • A vacuum cleaner including an electric blower disposed inside a generally cylindrical rigid blower casing positioned inside the vacuum cleaner body. The blower casing has a lining of sound absorbing material and is configured to cause a swirling flow around inside the casing to an exit opening into a smoothly-curved transfer passage which curves away from the blower casing with a non-radial flow direction. The transfer passage curves circumferentially and axially and opens into an annular noise reduction space at the bottom of the cleaner body in which air is guided over a sound absorbing layer by smoothly arcuate guide ribs, vented through an aperture into an exhaust space between the bottom of the body and a caster base and escapes through a peripheral clearance around the caster base.
    • 一种真空吸尘器,其包括设置在真空吸尘器主体内部的大致圆柱形的刚性鼓风机壳体内部的电动鼓风机。 鼓风机壳体具有吸音材料的衬里,并且构造成使得在壳体内部的旋转流动到出口开口到平滑弯曲的传送通道,其以非径向流动方向远离鼓风机壳体。 传送通道沿周向和轴向弯曲并且在吸尘器主体的底部开口成环形的降噪空间,在该环境中,空气通过平滑的弧形引导肋被引导到吸声层上,通过孔排放到排气空间的底部之间 身体和脚轮基座,并通过脚轮底座周围的间隙逃脱。