PORTABLE PEDESTAL AIR FILTERING DEVICE

• US 20070209701A1
• Filed: 12/28/2006
• Published: 09/13/2007
• Est. Priority Date: 12/18/2002
• Status: Abandoned Application

• Current Assignee: Lasko Holdings, Inc.
• Original Assignee: Lasko Holdings, Inc.
• Inventors: Orr, Paul, Lasko, William
• Application Number:
  US11/617,141
• Publication Number:
  US 20070209701A1
• Time in Patent Office: Days
• US Class Current: 137/15.10
• CPC Class Codes: B03C 2201/28 Parts being designed to be removed for cleaning purposes
• CPC Class Codes: B03C 3/32 Transportable units, e.g. for cleaning room air
• CPC Class Codes: B03C 3/86 Electrode-carrying means B03C3/40 takes precedence
• CPC Class Codes: Y10T 137/0402 Cleaning, repairing, or assembling

Abstract

A portable pedestal air filtering device is provided. The device includes a filtered air generation head, a support riser for supporting the filtered air generation head at an elevation above a support surface.

Claims

1. A portable pedestal air filtering apparatus for providing a filtered exhaust air stream at an elevation above a support surface, said apparatus comprising:

a filtered air generation head comprising;

an elongate housing having at least one sidewall, a top end, a bottom end, and a longitudinal length extending substantially upward from said bottom end to said top end;

an interior space within said elongate housing;

an inlet opening in said elongate housing allowing air to enter said interior space;

an air blower disposed within said interior space for receiving said air, said air blower comprising;

an air impeller;

a motor for rotating said air impeller to generate an exhaust air stream;

an air outlet opening in said elongate housing allowing said air to exit said interior space;

a filter element disposed such that substantially all of said air passing through said interior space passes through said filter element;

a filtered exhaust air stream projected from said interior space of said elongate housing via said air outlet opening;

a support riser for supporting said filtered air generation head at an elevation above a support surface, said support riser comprising;

a base in contact with said support surface;

a riser having a longitudinal length extending substantially upward from said base, said riser comprising;

a first end connected to said base;

a second end connected to said elongate housing; and

an elevation of said filtered exhaust air stream defined by a distance from where said support riser contacts said support surface to a vertical midpoint of said air outlet opening of said filtered air generation head.

2. The portable pedestal air filtering apparatus of claim 1, wherein said filter element is disposed to filter said air prior to passing said air through said impeller.

3. The portable pedestal air filtering apparatus of claim 1, wherein said filter element is disposed to filter said exhaust air stream generated by said air impeller.

4. The portable pedestal air filtering apparatus of claim 1, further comprising an ion generator disposed within a flow of said exhaust air stream.

5. The portable pedestal air filtering apparatus of claim 1, wherein said filter element further comprises an electrostatic filter element.

6. The portable pedestal air filtering apparatus of claim 5, wherein said electrostatic filter element is a permanently charged electrostatic filter element.

7. The portable pedestal air filtering apparatus of claim 5, further comprising an electrical contact wherein said electrical contact is utilized to induce an electrostatic charge in said electrostatic filter element.

8. The portable pedestal air filtering apparatus of claim 1, further comprising a segregation wall, wherein said segregation wall segregates said interior space into an intake portion and an exhaust portion.

9. The portable pedestal air filtering apparatus of claim 8, wherein said filter element is disposed in said exhaust portion.

10. The portable pedestal air filtering apparatus of claim 8, wherein said filter element is disposed in said intake portion.

11. A portable pedestal air filtering apparatus comprising:

a filtered air generation head comprising

an elongate housing comprising;

a wall portion having a predetermined length HL, wherein said length HL of said elongate housing is oriented substantially vertically;

an inlet opening formed in a first portion of said wall portion;

a vertically elongate outlet opening formed in a second portion of said wall portion, and;

an air generator disposed within said elongate housing and positioned between said inlet opening and said vertically elongate outlet opening, said air generator inducing a flow of inlet air to enter said elongate housing through said inlet opening and generating a flow of exhaust air that exits said elongate housing through said elongate outlet opening, said air generator further comprising;

a motor comprising at least one shaft extension;

an air impeller attached to said shaft extension;

an axis of rotation of said air impeller oriented in a substantially vertical orientation;

a filter element disposed such that substantially all of the air passing through said elongate housing passes through said filter element;

a support member providing support and elevation for said elongate housing, said support member comprising;

a base contacting a support surface;

a column supported by said base and extending vertically upward relative to said support surface and operatively connected to the elongate housing at the opposing elevated end of said column; and

a predetermined rise height RH of said support member measured from the support surface to said opposing elevated end of said column;

wherein said rise height RH of said support member and said length HL of said elongate housing are utilized to elevate said filtered exhaust air above said support surface, wherein said rise height RH is greater than about 16% of said length HL of said elongate housing.

12. The portable pedestal air filtering apparatus of claim 11, wherein said filter element is disposed to filter said flow of inlet air prior to passing through said impeller.

13. The portable pedestal air filtering apparatus of claim 11, wherein said filter element is disposed to filter said flow of exhaust air subsequent to passing through said impeller.

14. The portable pedestal air filtering apparatus of claim 11, further comprising an ion generator disposed within said flow of exhaust air.

15. The portable pedestal air filtering apparatus of claim 11, wherein said filter element further comprises an electrostatic filter element.

16. The portable pedestal air filtering apparatus of claim 15, wherein said electrostatic filter element is a permanently charged electrostatic filter element.

17. The portable pedestal air filtering apparatus of claim 15, further comprising an electrical contact wherein said electrical contact is utilized to induce an electrostatic charge in said electrostatic filter element.

18. A method for elevating a vertically oriented column of filtered exhaust air above a support surface comprising the steps of:

contacting a support surface using a base;

extending a riser vertically upward from said base to a distal end;

connecting an elongate housing to said distal end of said riser such that a longitudinal length of said elongate housing is oriented substantially vertically;

disposing an air blower within an internal space of said elongate housing between an air inlet and a vertically elongate air outlet;

inducing an air flow into said air inlet by rotating said air blower;

generating an exhaust air flow out of said air outlet using said rotation of said air blower;

filtering substantially all of said air flow into said air inlet and/or said exhaust air flow; and

expelling said vertically oriented column of filtered air out of said interior space of said elongate housing at an elevation above said support surface;

19. A method for elevating a vertically oriented column of filtered exhaust air above a support surface of claim 18, further comprising introducing ions into said vertically oriented column of filtered air.

20. A method for elevating a vertically oriented column of filtered exhaust air above a support surface of claim 18, further comprising charging a filter element with an electrostatic charge.