Filter system
AssigneeHMI Industries, Inc., a Delaware corporation
InventorMark A. Cartellone
Life of this patent
Estimating the term…
Abstract
A vacuum cleaner having a reduced velocity chamber with a high velocity air inlet, an electric motor, a rotary blade driven by the motor to create a vacuum in the chamber, an outlet for exhausting air from the chamber, which air flows in a selected path from the air inlet, through the chamber and out the air exhaust outlet and a disposable porous sheet filter layer in the chamber for removing large solid particles from the air.
Claims35
A vacuum cleaner comprising a low velocity chamber with a high velocity air inlet, a motor, a blade driven by said motor to create a vacuum in said chamber, an outlet for exhausting air from said chamber, said air flowing in a selected path from said air inlet, through said chamber and out said air exhaust outlet, the improvement comprising a filter positioned between said air inlet and said motor, said filter including a plurality of rib sections and trough portions between two adjacently positioned rib sections.
A method of cleaning air by use of a canister type vacuum cleaner including the steps of:
- (a) drawing air through a high velocity air inlet into a low velocity chamber;
- (b) centrifuging the air in the low velocity chamber to remove solid particles;
- (c) passing said air through a filter to remove particles, said filter including a plurality of ribs and at least one trough portion formed between two adjacent ribs;
- and passing said filtered air through a particle and gas removing filter to remove gases and small particles;
- and
- (d) forcing said cleaned air past said motor and out an air outlet.
The particle filter substantially conical in shape for removing a majority of particles from air passing through the filter, said filter including a particle barrier medium to mechanically and/or electrically remove at least 99% of particles two microns or larger in size from said air, said filter including a plurality of ribs positioned about an outer surface of said filter and at least one trough portion positioned at least partially between two adjacent ribs.
A vacuum cleaner or air cleaner comprising a reduced velocity chamber with a high velocity air inlet, a motor, a rotary blade driven by said motor to create a vacuum in said chamber, an outlet to exhaust air from said chamber, said air flowing in a selected path from said air inlet, through said chamber and a filter in said chamber, and out said air exhaust outlet, the improvement comprising a motor housing and an expanding exhaust conduit, said motor housing positioned at least partially about said motor and blade, said motor housing having an opening through which air is expelled from said motor housing, said expanding exhaust conduit having a first and second opening, said first opening connected to said opening in said motor housing, said second opening having a cross-sectional area greater than said first opening.
A filter support adapted to support a substantially conically shaped filter, said filter support comprising a plurality of fin sections and at least one opening at least partially positioned between two adjacent fin sections.
In a vacuum cleaner comprising a low velocity chamber with a high velocity air inlet, a motor, a blade driven by said motor to create a vacuum in said chamber, an outlet for exhausting air from said chamber, said air flowing in a selected path from said air inlet, through said chamber, through a particle filter, and out said air exhaust outlet, the improvement comprising a canister removably positioned in a base of said vacuum cleaner, said canister including said low velocity chamber.
Dependencies are inferred from the claim text.