Air purifier

• US 20070221061A1
• Filed: 03/10/2006
• Published: 09/27/2007
• Est. Priority Date: 03/10/2006
• Status: Abandoned Application

• Current Assignee: Hamilton Beach Brands Incorporated (Hamilton Beach Brands Holding Co.)
• Original Assignee: Hamilton Beach/Proctor-Silex Incorporated (Hamilton Beach Brands Holding Co.)
• Inventors: Ye, Guoyao, Steiner, Mark
• Application Number:
  US11/372,792
• Publication Number:
  US 20070221061A1
• Time in Patent Office: Days
• US Class Current: 96/63
• 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 3/88 Cleaning-out collected particles
• CPC Class Codes: F24F 1/0071 with means for purifying supplied air perfuming or deodorising means F24F1/008
• CPC Class Codes: F24F 2110/64 Airborne particle content
• CPC Class Codes: F24F 8/10 by separation, e.g. by filtering
• CPC Class Codes: F24F 8/108 using dry filter elements
• CPC Class Codes: F24F 8/80 Self-contained air purifiers
• CPC Class Codes: Y02B 30/70 Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

An air purifier for removing particles from air and providing an aesthetically pleasing appearance includes a housing having an air inlet, an air outlet and an airflow path therethrough. An air filter is mounted within the housing in the airflow path and a motor is mounted within the housing. The motor includes a motor shaft and a fan is mounted to the motor shaft for urging air into the air inlet, through the airflow path and out of the air outlet. An air cowl is removably mounted to the housing. The air cowl includes a peripheral edge. The air inlet or the air outlet is defined between the peripheral edge and the housing. A method of operating the air purifier with the inlet or outlet formed between the peripheral edge and the housing is also disclosed.

Claims

1. An air purifier for removing particles from air and providing an aesthetically pleasing appearance, the air purifier comprising:

a housing including an air inlet, an air outlet and an air flow path therethrough;

an air filter mounted within the housing in the air flow path;

a motor mounted within the housing including a motor shaft;

a fan mounted to the motor shaft for urging air into the air inlet, through the air flow path and out of the air outlet;

an air cowl removably mounted to the housing, the air cowl including a peripheral edge, one of the air inlet and the air outlet being defined between the peripheral edge and the housing.

2. The air purifier of claim 1 wherein the air cowl is generally planar and has a generally rectangular-shape, the air cowl having an exposed face and an internal face, at least one alignment arm and at least one engagement arm extending generally perpendicularly from the interior face.

3. The air purifier of claim 1 wherein the housing includes an arcuate-shaped inlet cowl, the air inlet being defined between the peripheral edge and the inlet cowl.

4. The air purifier of claim 3 wherein the inlet cowl includes a least one alignment indentation and a first magnetic member

5. The air purifier of claim 1 wherein the air cowl includes an exposed face and an internal face, a plurality of spacers extending generally perpendicularly from the internal face, the spacers locating the internal face a first distance from the air filter in an assembled configuration.

6. The air purifier of claim 1 wherein the air cowl is constructed of a molded, polymeric material, the air cowl including an exposed face and an internal face, the exposed face including a decorative pattern integrally located thereon.

7. The air purifier of claim 6 wherein the decorative pattern is comprised of a series of wavy-shaped ribs extending from the exposed face.

8. The air purifier of claim 1 wherein the housing includes an arcuate-shaped inlet cowl and a filter box, the filter box including an air flow grate, the air filter secured in the filter box between the air cowl and the air flow grate.

9. The air purifier of claim 1 further comprising:

a first scroll mounted within the housing in the air flow path; and

a second scroll mounted within the housing in the air flow path, the motor shaft including a first end and a second end, the fan comprised of a first fan and a second fan, the first fan secured to the first end within the first scroll and the second fan secured to the second end within the second scroll.

10. The air purifier of claim 9 wherein the air outlet is comprised of a first louvered vent and a second louvered vent formed in the housing, the first scroll including a first outlet chute and the second scroll including a second outlet chute, the first outlet chute and the second outlet chute including first and second terminal edges, respectively, the first terminal edge being positioned proximate an inner surface of the housing proximate the first louvered vent and the second terminal edge being positioned proximate the inner surface of the housing proximate the second louvered vent to direct air out of the air outlet.

11. The air purifier of claim 9 further comprising:

an ionizer needle positioned in at least one of the first outlet chute and the second outlet chute.

12. The air purifier of claim 1 further comprising:

a controller secured to the housing and being in communication with the motor; and

a dust sensor secured to the housing and in being in communication with the controller, the dust sensor sending dust readings to the controller, the controller actuating the motor to operate at one of a plurality of operating speeds based upon the dust readings.

13. The air purifier of claim 12 further comprising:

a control dial in communication with the controller, the control dial actuable between automatic, low, medium and high modes; and

an array of indicator lights mounted to an external surface of the housing, the array of indicator lights in communication with the controller and providing a visual indication of the dust readings.

14. A method of operating an air purifier including a housing having an air flow path therethrough and an air outlet, a motor mounted within the housing, a fan positioned within the air flow path driven by the motor, an air filter positioned within the air flow path, an air cowl having a peripheral edge, an air inlet defined between the peripheral edge and the housing, the method comprising the steps of:

a) mounting the air cowl to the housing such that the peripheral edge defines the air inlet with the housing;

b) positioning the air purifier within a room; and

c) actuating the motor to drive the fan and urge room air into the air inlet, through the air filter and out of the air outlet.

15. The method of operating the air purifier of claim 14 comprising the further steps of:

d) removing the air cowl from the housing;

e) removing the air filter from the housing;

f) inserting a replacement air filter into the housing; and

g) mounting the air cowl to the housing to secure the replacement air filter within the housing.

16. The method of operating an air purifier of claim 14 comprising the further steps of:

d) mounting a dust sensor to the housing, the dust sensor being in communication with a controller and the controller being in communication with the motor;

e) sampling the amount of dust within the room using the dust sensor;

f) transmitting a dust reading from the dust sensor to the controller; and

g) actuating the motor to operate at one of a high, medium and low speed based upon a signal from the controller depending upon the dust reading.

17. The method of operating an air purifier of claim 14 comprising the further steps of:

d) mounting an ionizer needle within the air flow path; and

e) actuating the ionizer needle to charge dust particles that flow through the air flow path when the air purifier is operating.

18. The method of operating an air purifier of claim 14 wherein the air cowl includes a bottom edge and a top edge, in step (b) an alignment arm proximate the bottom edge of the air cowl is positioned within an alignment indentation of the housing to align the air cowl relative to the housing, the air cowl is pivoted about the bottom edge such that the top edge moves toward the housing and a first magnetic member mounted on the housing is attracted to a second magnetic member mounted to the air cowl proximate the top edge to secure the air cowl to the housing.

19. The method of operating an air purifier of claim 14 comprising the further steps of:

d) removing the air cowl from the housing, thereby exposing the air filter; and

e) cleaning the air filter while the air filter is secured within the housing.

20. The method of operating an air purifier of claim 14 wherein the air cowl includes a plurality of spacers extending generally perpendicularly from an internal face, the spacers in engagement with the air filter in an assembled configuration to position the internal face a first distance from the air filter.