Ultraviolet germicidal irradiation system

• US 8,354,060 B2
• Filed: 09/09/2011
• Issued: 01/15/2013
• Est. Priority Date: 09/02/2004
• Status: Active Grant

• Current Assignee: PHI Technologies, LLC
• Original Assignee: Purgenix, Inc.
• Inventors: Horne, Joel E., Sutton, Richard P.
• Primary Examiner(s): Yoo, Regina M.
• Application Number:
  US13/229,293
• Publication Number:
  US 20110315892A1
• Time in Patent Office: 494 Days
• Field of Search: 422/120, 422/121, 422/5, 422/22, 422/24, 962/23, 962/24
• US Class Current: 422/121
• CPC Class Codes: A61L 2209/12 Lighting means
• CPC Class Codes: A61L 2209/16 Connections to a HVAC unit
• CPC Class Codes: A61L 9/20 Ultraviolet radiation

Abstract

A modular germicidal light grid system for use inside an air treatment apparatus that has a plenum in which a stream of air is enclosed. The system comprises at least one elongate member and at least one lamp assembly. Each lamp assembly comprises a housing defining at least one socket and is mounted to one elongate member at a predetermined position. The system further comprises at least one linear germicidal light source. Each light source has a longitudinal axis and a distal end constructed and arranged to mount within one socket of the housing. The elongate member is mounted within the plenum and the lamp assembly is mounted to the elongate member such that the longitudinal axis of the light source extends therein the stream of air and is positioned at an acute light angle relative to the direction of flow of the stream of air.

Claims

1. A modular germicidal light grid system for use inside a plenum containing a cooling apparatus, the modular germicidal light grid system comprising:

a support assembly comprising;

at least one elongate first member; and

at least one elongate second member mounted and positioned substantially perpendicular to the at least one elongate first member;

at least one lamp assembly, each lamp assembly constructed and arranged to mount to a portion of the at least one elongate second member of the support assembly at a predetermined position, each lamp assembly comprising a respective housing defining at least one socket; and

at least one linear germicidal light source, each light source having a longitudinal axis and a distal end constructed and arranged to mount within one socket of the housing,

wherein at least one of the at least one elongate first and second members is connected to a portion of the plenum, wherein the at least one elongate first member and the at least one elongate second member are positioned within a common plane, and wherein each lamp assembly is constructed and arranged to mount to a portion of the at least one elongate second member such that the longitudinal axis of the at least one linear light source extends at an acute light angle relative to the common plane.

2. The modular germicidal light grid system of claim 1, wherein the housing has a transverse axis, and wherein the at least one socket that extends at an acute angle relative to the transverse axis of the housing.

3. The modular germicidal light grid system of claim 2, wherein the transverse axis of the housing is substantially perpendicular to the common plane.

4. The modular germicidal light grid system of claim 2, wherein the acute light angle is between about 10°

to less than about 90°

.

5. The modular germicidal light grid system of claim 1, further comprising a power supply and at least one ballast device electrically coupled to the power supply and the at least one socket of the housing.

6. The modular germicidal light grid system of claim 1, wherein the at least one lamp assembly is releasably mounted to the at least one elongate second member of the support assembly.

7. A modular germicidal light grid system for use inside a plenum downstream of a cooling apparatus, the modular germicidal light grid system comprising:

a support assembly comprising;

at least one elongate first member; and

at least one elongate second member mounted and positioned substantially perpendicular to the at least one elongate first member;

at least one lamp assembly, each lamp assembly constructed and arranged to mount to at least a portion of the at least one elongate second member of the support assembly at a predetermined position, each lamp assembly comprising a respective housing having a transverse axis, the housing defining at least one socket that extends at an acute angle relative to the transverse axis of the housing; and

at least one linear germicidal light source, each light source having a longitudinal axis and a distal end constructed and arranged to mount within one socket of the housing,

wherein at least one of the elongate first and second members is connected to a portion of the plenum, wherein the at least one elongate first member and the at least one elongate second member are positioned within a common plane, and wherein the at least one light source extends such that the longitudinal axis of the at least one light source is positioned at an acute light angle relative to the common plane.

8. The modular germicidal light grid system of claim 7, wherein the transverse axis of the housing is substantially perpendicular to the common plane.

9. The modular germicidal light grid system of claim 7, further comprising a power supply and at least one ballast device electrically coupled to the power supply and the at least one socket of the housing.

10. The modular germicidal light grid system of claim 9, wherein the housing of each light assembly defines an internal cavity, and wherein the at least one ballast device is disposed therein the internal cavity.

11. The modular germicidal light grid system of claim 7, wherein the at least one lamp assembly is releasably mounted to the at least one elongate second member of the support assembly.

12. The modular germicidal light grid system of claim 7, wherein the at least one elongate second member defines a trough, and wherein a portion of the housing is sized and shaped for disposition within a portion of the trough of the at least one elongate second member.

13. The modular germicidal light grid system of claim 7, wherein at least one of the at least one elongate first member is connected to an interior surface of the plenum.

14. The modular germicidal light grid system of claim 7, wherein the at least one elongate second member is slidably mounted to the at least one elongate first member.

15. The modular germicidal light grid system of claim 7, wherein the acute light angle is between about 10°

to less than about 90°

.

16. The modular germicidal light grid system of claim 7, wherein the acute light angle is between about 20°

to about 80°

.

17. The modular germicidal light grid system of claim 7, wherein the acute light angle is between about 30°

to about 70°

.

18. The modular germicidal light grid system of claim 7, wherein the acute light angle is about 60°

.

19. The modular germicidal light grid system of claim 7, wherein the acute light angle is about 45°

.

20. The modular germicidal light grid system of claim 7, wherein the housing of the at least one lamp assembly comprises a first body member, an opposed second body member, and an extension conduit connected to and extending between the first and second body members, wherein the extension conduit extends substantially coaxial to the transverse axis of the housing, wherein the at least one socket is defined on the second body member, and wherein a portion of the first body member of the housing is constructed and arranged to mount to the portion of the at least one elongate second member.