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US 2026/0096704 A1Published application
Surface cleaner with coanda separator
OwnerCasey McClay, Rachel Zouinventors
Life of this patent
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Abstract
Disclosed herein is a surface cleaner that provides an airflow away from a surface to remove debris. The surface cleaner can include a dirty air inlet, a clean air outlet, a suction motor moving air along a flow path from the dirty air inlet to the clean air outlet, and a Coanda separator positioned within the flow path to separate the air and the debris.
Claims28
A vacuum cleaner comprising:
- a dirty air inlet receiving air and debris;
- a clean air outlet discharging the air without the debris;
- a suction motor moving the air along a flow path from the dirty air inlet to the clean air outlet;
- and
- a separator positioned within the flow path to divide the air and the debris, the separator including:
- a chamber including an inlet downstream of the dirty air inlet, and an outlet upstream of the clean air outlet, at least a portion of the interior of the chamber forming a polygon having side segments;
- a core positioned within an approximate center of the chamber including a longitudinal axis and a hollow interior along the longitudinal axis forming a clean air flow path toward the outlet of the chamber;
- a plurality of vias through an exterior of the core, each via forming one or more through holes from the hollow interior of the chamber to the clean air flow path within the core;
- and
- a plurality of Coanda foils on the exterior of the core;
- the inlet of the chamber directing air toward an exterior of the core along the plurality of Coanda foils, each Coanda foil bending air flow along a surface of the Coanda foil toward one or more of the vias and into the clean air flow path of the core while the debris ricochets around the side segments of the chamber dividing the debris from the air flowing through the vias.
8 more elements
A surface cleaner that removes debris by directing airflow away from a surface, the surface cleaner comprising:
- a suction motor moving air along a flow path away from the surface;
- a separating chamber including a dirty air inlet upstream of a clean air outlet along the flow path;
- a hollow core positioned within the separating chamber, the hollow core including a clean air return along an interior of the hollow core downstream of the dirty air inlet and upstream of the clean air outlet of the separating chamber;
- a plurality of curved surfaces protruding from an exterior of the hollow core;
- and
- a plurality of openings along the exterior of the hollow core forming vias from the interior of the separating chamber to the clean air return of the hollow core, the air staying attached to the curved surfaces, bending toward the openings, and flowing through the vias to the clean air return while the debris ricochets off the curved surfaces causing separation from the air.
3 more elements
A surface cleaner that provides an airflow away from a surface to remove debris, the surface cleaner comprising:
- a dirty air inlet;
- a clean air outlet;
- a suction motor moving air along a flow path from the dirty air inlet to the clean
- air outlet, wherein when the dirty air inlet is positioned proximate the surface, the moving air transports debris away from the surface;
- and
- a Coanda separator positioned within the flow path to separate the air and the debris.
3 more elements
A multi-stage vacuum cleaner comprising:
- a suction motor moving air along a flow path from a dirty air inlet to a clean air outlet, the dirty air inlet configured to receive the air mixed with comparatively larger and smaller debris, the clean air outlet configured to discharge the air without the larger and smaller debris;
- a primary separator within the flow path and shaped to divide the comparatively larger debris and the air;
- and
- a secondary separator within the flow path downstream from the primary separator and shaped to divide the comparatively smaller debris from the air,
- wherein one or more of the primary separator and secondary separators comprise a Coanda separator.
2 more elements
Dependencies are inferred from the claim text.