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US 2003/0150326 A1Published application
Multi-stage air cleaner fan system
AssigneeHP Intellectual Corp.
InventorJames E. Chasen
Life of this patent
Estimating the term…
Abstract
A portable room air cleaner including a frame; at least one motor connected to the frame; at least two rotatable axial flow fans connected to the at least one motor; and a filter connected to the frame. The fans are rotated by the motor to additively build static air pressure in series for entry of the air into the filter.
Claims20
A portable room air cleaner comprising:
- a frame;
- at least one motor connected to the frame;
- at least two rotatable axial flow fans connected to the at least one motor;
- and
- a filter connected to the frame,
- wherein the fans are rotated by the at least one motor to additively build static air pressure in series for entry of air into the filter.
3 more elements
A portable room air cleaner comprising:
- a frame;
- a single motor connected to the frame;
- at least two spaced fans operably connected to the single motor;
- and
- a filter connected to the frame,
- wherein the portable room air cleaner comprises an air flow path from a first one of the fans, then to a second one of the fans, and then to the filter.
3 more elements
A method of moving air in a portable room air cleaner comprising steps of:
- rotating a first fan by a motor to propel air through a first stage of the portable room air cleaner;
- and
- rotating a second fan by the motor to propel the air from the first stage through a second stage of the portable room air cleaner and into a filter of the air cleaner,
- wherein the sequential multistage propulsion of the air by more than one fan allows an increase in static air pressure for entry of the air into the filter without a substantial increase in noise versus a single rotating fan.
1 more element
Dependencies are inferred from the claim text.