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US 8,117,713 B2Granted
Vacuum cleaner with two stage filtration
AssigneeBISSELL Homecare, Inc.
InventorsGary A. Kasper, Allen W. Scott, Jose Carlito Santiago
Life of this patent
Estimating the term…
Abstract
A canister vacuum cleaner comprises a base, a recovery tank, and a clean solution tank. The vacuum cleaner can be used for dry vacuuming, wet vacuuming, and can distribute cleaning solution to a floor surface and has means for a fluid distribution system and a recovery system. The clean solution tank can be filled with a cleaning solution for distribution to a floor surface and the recovery tank is used for collecting dry or liquid matter recovered from vacuuming.
Claims14
A combination wet-dry vacuum cleaner comprising:
- a recovery tank adapted for wet and dry cleaning and comprising:
- a recovery chamber having an inlet opening adapted to be connected to a suction nozzle and having an upper portion and a lower portion, wherein the lower portion is configured to form a water bath receptacle;
- an air-liquid separator within the recovery chamber for separating air from liquid in an air-liquid mixture from the suction nozzle;
- and
- a conduit within the recovery chamber and having a first end connected to the inlet opening and a second end forming a discharge opening that is positioned in the lower portion of the recovery chamber;
- a cyclone separator having an outlet and an inlet;
- a first fluid path between the conduit discharge opening and the cyclone separator inlet;
- a second fluid path between the air-liquid separator and the cyclone separator inlet;
- and
- a diverter valve having an outlet opening and mounted within the conduit between the first and second ends thereof for movement between a first position in which the diverter valve outlet opening is in fluid communication with the second fluid path and a second position in which the diverter valve outlet opening is closed to block fluid communication with the second fluid path;
- and
- a suction source that is connected to the cyclone separator outlet, thereby creating a working air path to draw dry, dirt-laden air and liquid-laden air from the recovery chamber inlet opening selectively through either the discharge opening or through the air liquid separator, and through the cyclone separator;
- wherein dirt can be separated from dry, dirt-laden air in at least one of the lower portion of the recovery chamber that may contain a water bath and the cyclone separator, and liquid can be separated from liquid-laden air by at least one of the air-liquid separator and the cyclone separator.
10 more elements
A combination wet-dry vacuum cleaner comprising:
- a recovery tank adapted for both wet and dry cleaning and comprising:
- a recovery chamber having an inlet opening adapted to be connected to a suction nozzle and having an upper portion and a lower portion, wherein the lower portion is configured to form a water bath receptacle;
- a first air-liquid separator within the recovery chamber for separating air from liquid when an air-liquid mixture enters the recovery tank through the inlet opening;
- a second air-liquid separator that is fluidly connected to the recovery chamber for removing liquid from air before it passes from the recovery tank;
- and
- a conduit within the recovery chamber and having a first end connected to the inlet opening and a second end forming a discharge opening that is positioned in the lower portion of the recovery chamber;
- and
- a first fluid path between the conduit discharge opening and the second air-liquid separator;
- a second fluid path between the first air-liquid separator and the second air-liquid separator;
- a diverter valve having an outlet opening and mounted within the conduit between the first and second ends thereof for movement between a first position in which the outlet opening is in fluid communication with the second fluid path and a second position in which the outlet opening is closed to block fluid communication with the second fluid path;
- and
- a suction source that is connected to the inlet opening through the recovery tank and the second air-liquid separator to draw dry dirt-laden air and liquid-laden air from the inlet opening selectively through either the discharge opening or through the first air-liquid separator, and through the second air-liquid separator;
- wherein dirt can be separated from dry dirt-laden air in a water bath selectively provided in the lower portion of the recovery chamber and the second air-liquid separator for dry cleaning, and liquid can be separated from liquid-laden air by at least one of the first air-liquid separator and the second air-liquid separator for wet cleaning.
10 more elements
Dependencies are inferred from the claim text.