Air purification unit

• US 5,141,706 A
• Filed: 06/30/1989
• Issued: 08/25/1992
• Est. Priority Date: 06/30/1989
• Status: Expired due to Fees

• Current Assignee: Donald L. Clark
• Original Assignee: Donald L. Clark
• Inventors: Clark, Donald L.
• Primary Examiner(s): Warden, Robert J.
• Assistant Examiner(s): Santiago, Amalia L.
• Application Number:
  US07/374,663
• Time in Patent Office: 1,152 Days
• Field of Search: 422/122, 422/124, 422/5, 55/315, 55/316, 55/318, 55/322, 55/323
• US Class Current: 422/122
• CPC Class Codes: A62B 11/00 Devices for reconditioning breathing air in sealed rooms chemical purification, disinfection, or sterilisation of air A61L; in aircraft or submarines, insofar as they influence the construction of the vehicle or are influenced by its construction B63B, B64D, respectively; air-conditioning in general F24F
• 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 8/158 using active carbon

Abstract

An air purification unit including a housing of substantially rectangular solid configuration and having an inlet and an outlet, a diagonal partition in the housing dividing it into substantially equal inlet and outlet chambers, first filters in communication with the inlet chamber for removing gases and particulate matter entering the inlet chamber, second filters in communication with the outlet chamber for removing submicron particles, and a specialized motorized impeller mounted on the diagonal partition for moving air from the inlet chamber to the outlet chamber, the motorized impeller including a stationary inlet ring secured to the partition, a stationary motor housing portion fixed relative to the partition and a rotatable motor housing portion carrying a backwardly rotatable impeller wheel for drawing air through the center of the impeller wheel as it rotates and forcing it radially outwardly through the impeller wheel to thereby pressurize air in the outlet chamber.

Claims

1. An air purification unit comprising a housing of substantially rectangular configuration including a plurality of sides, an air inlet in one of said sides, an air outlet in another of said sides, a diagonal partition in said housing dividing said housing into an air inlet chamber in communication with said air inlet and an air outlet chamber in communication with said air outlet, an opening in said partition, filter means in said housing for purifying air passing therethrough, and a motorized impeller assembly effectively mounted on said partition for moving air from said inlet chamber to said outlet chamber through said opening and pressurizing air in said outlet chamber and forcing air from said outlet chamber through said air outlet, said motorized impeller assembly including a rotatable fan housing portion and a stationary housing portion, bracket means secured to said stationary housing portion for fixedly mounting said impeller in said air outlet chamber, a shroud, means fixedly mounting said shroud at said opening for guiding air passing from said inlet chamber to said outlet chamber through said opening, an impeller fixedly secured to said rotatable fan housing portion, said impeller including an inlet shroud located in contiguous relationship to said shroud for receiving air from said shroud, said impeller also including a plate spaced from said inlet shroud and a plurality of blades affixed between said inlet shroud and said plate.

2. An air purification unit as set forth in claim 1 wherein said inlet and outlet chambers are of substantially equal size.

3. An air purification unit as set forth in claim 1 wherein said filter means includes first filter means in said air inlet, and second filter means in said air outlet.

4. An air purification unit as set forth in claim 3 wherein said housing includes a top side and a front side adjacent thereto, and wherein said air inlet is in said top side of said housing, and wherein said air outlet is in said front side.

5. An air purification unit as set forth in claim 4 wherein said first filter means includes a tray of pelletized air purifying material.

6. An air purification unit as set forth in claim 5 wherein said first filter means includes material for trapping particulate matter.

7. An air purification unit as set forth in claim 6 wherein said second filter means comprises a high efficiency particulate filter.

8. An air purification unit as set forth in claim 7 wherein said air outlet includes a grille for moving the outlet air in a substantially columnar shape.

9. An air purification unit as set forth in claim 1 wherein said housing includes a top side and a front side adjacent thereto, and wherein said air inlet is in said top side of said housing, and wherein said air outlet is in said front side.

10. An air purification unit comprising a housing including a top side and a front side, an air inlet in said top side, an air outlet in said front side oriented at substantially 90°

to said air inlet, a diagonal partition in said housing dividing said housing into an air inlet chamber in communication with said air inlet and an air outlet chamber in communication with said air outlet, filter means in said housing for purifying air passing therethrough, and air moving means effectively mounted on said partition for moving air from said inlet chamber to said outlet chamber and pressurizing air in said outlet chamber and forcing air from said outlet chamber through said outlet substantially only by pressure.

11. An air purification unit as set forth in claim 10 wherein said inlet and outlet chambers are of substantially equal size.

12. An air purification unit as set forth in claim 10 wherein said filter means comprise first filter means in said air inlet, and second filter means in said air outlet.

13. An air purification unit as set forth in claim 12 wherein said first filter means comprises a tray of pelletized air purifying material.

14. An air purification unit as set forth in claim 13 wherein said first filter means includes material for trapping particulate matter.

15. An air purification unit as set forth in claim 14 wherein said second filter means comprises a high efficiency particulate filter.

16. An air purification unit comprising a housing including a plurality of sides, an air inlet in one of said sides, an air outlet in another of said sides, a diagonal partition in said housing dividing said housing into an air inlet chamber in communication with said air inlet and an air outlet chamber in communication with said air outlet, filter means in said housing for purifying air passing therethrough, and air moving means effectively mounted on said diagonal partition for moving air from said inlet chamber to said outlet chamber and pressurizing air in said outlet chamber and forcing air from said outlet chamber through said outlet substantially only by pressure.

17. An air purification unit as set forth in claim 16 wherein said inlet and outlet chambers are of substantially equal size.