Patent ID: 6029309
Filing Date: 2000-02-29
Classification: A47L,B01D

Abstract:
A vacuum cleaner comprising;a vacuum cleaner body,a suction pipe connected to the vacuum cleaner body, for guiding dust and air to the vacuum cleaner body,a fan motor provided within the vacuum cleaner body for generating a suction force,a dust bag for collecting dust suctioned by the suction force,a generator, the generator being positioned along the suction pipe such that the generator is driven by air suctioned through the suction pipe to generate an amount of electric power corresponding to an amount of negative pressure within the suction pipe,a dust sensor for detecting dust suctioned by the suction force, andcollected dust quantity indirect detection and display means for producing a comparison result signal in response to the amount of electric power generated by the generator being less than a predetermined amount of electric power that stops operation of dust sensor, and for indicating that the dust bag is full in response to the comparison result signal and displaying detection results from the dust sensor when the comparison result signal is not produced.