Silencing device for vacuum cleaner

Details Silencing device for vacuum cleaner Silencing device for vacuum cleaner

1994-07-14

1996-05-07

Dang, Khanh

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15412, 181202, 55276, A47L 922

Patent

active

055134173

ABSTRACT:
A silencing device for a vacuum cleaner includes dampers for absorbing operational vibration of a suction motor. The operational noises of the suction motor are intercepted and suppressed by a middle case, a lower case, a bottom case and a top case. The exhaust noises caused by exhaust air flow are repeatedly absorbed and suppressed by a plurality of exhaust ports. The exhaust air flow is also dispersed so as to suppress the exhaust noises. In the primary embodiment, the noises generated by both the suction motor and the exhaust air flow are effectively suppressed to desired low levels. In a second embodiment, the silencing device comprises a noise absorber for absorbing and suppressing both suction noises caused by suction air flow and operational noises of the suction motor. The silencing device also has a cover for covering and supporting the front surface of the noise absorber. The back of the noise absorber is supported by a rear supporter. In the second embodiment, the noises generated by both the suction motor and the suction air flow during suction of dirt-laden air by the suction motor are effectively suppressed to desired low levels.

REFERENCES:
patent: 4864683 (1989-09-01), Herron, Jr. et al.
patent: 4970753 (1990-11-01), Herron, Jr.
patent: 5293664 (1994-03-01), Lim et al.

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