Light source disinfection in a pneumatic transport system

• US 9,439,996 B2
• Filed: 02/28/2014
• Issued: 09/13/2016
• Est. Priority Date: 02/28/2014
• Status: Active Grant

• Current Assignee: Translogic Corporation (Midea Group Co., Ltd)
• Original Assignee: Translogic Corporation (Midea Group Co., Ltd)
• Inventors: Gross, Daniel Robert
• Primary Examiner(s): CONLEY, SEAN EVERETT
• Application Number:
  US14/193,964
• Publication Number:
  US 20150246152A1
• Time in Patent Office: 928 Days
• Field of Search: 422/120, 422/121, 422/24
• US Class Current: 1/1
• CPC Class Codes: A61L 2/10 Ultraviolet radiation
• CPC Class Codes: A61L 9/20 Ultraviolet radiation
• CPC Class Codes: B65G 51/04 Conveying the articles in carriers having a cross-section approximating that of the pipe or tube; Tube mail systems
• CPC Class Codes: F24F 8/22 using UV light
• CPC Class Codes: F24F 8/30 by ionisation
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

Provided herein are systems, apparatuses and methods for use in disinfecting pneumatic tube system (PTS) components and/or disinfecting air displaced during the operation of a PTS. More specifically, various aspects are directed to the use of light source disinfection systems for disabling bacteria, viruses and/or other micro-organisms (hereafter “pathogens”) in a PTS. The light source disinfection systems allow of cleaning pneumatic carriers, cleaning the interior of pneumatic tubes and PTS components and/or cleaning air, which is used to propel pneumatic carriers in a PTS.

Claims

1. A system for at least partially disinfecting airflow in a pneumatic tube system, comprising:

a pneumatic tube system including at least a first user station having a first pneumatic tube, a second user station having a second pneumatic tube and at least one transfer device for selectively aligning one of said first and second pneumatic tubes with an airflow;

a blower connectable to said pneumatic tube system, wherein said blower is operative to provide air flow through at least a portion of said pneumatic tube system, said blower including;

a first port fluidly connected to said pneumatic tube system for supplying said air flow to said pneumatic system components;

a second port for venting air from said blower and drawing air into said blower; and

a light source disinfecting system interconnected to said second port, said light source disinfection system including at least one UV light source, wherein air venting from said blower or drawing into said blower is exposed to UV light from said UV light source.

2. The system of claim 1, wherein said light source disinfecting system further comprises:

a housing having;

an at least partially enclosed interior, wherein said at least one light source is disposed in said interior of said housing;

an first inlet/outlet opening exposed to atmosphere; and

a second inlet/outlet opening connected to said second port of said blower.

3. The system of claim 2, wherein a length of said housing between said first inlet/outlet opening and said second inlet/outlet opening is sized to permit airflow venting from said blower or drawing into said blower be exposed to said UV light for at least 0.1 milliseconds.

4. The system of claim 1, wherein said at least one UV light source comprises:

a pulsed Xenon light source.

5. The system of claim 4, wherein light pulses of said Xenon UV light source are between about 0.1 milliseconds and about 3 milliseconds in duration.

6. The system of claim 1, wherein said light source disinfection system further comprises:

an ion generator.

7. A system for at least partially disinfecting airflow in a pneumatic tube system, comprising:

a tube section having an internal bore at least partially defined by a sidewall extending between a tube inlet and a tube outlet, wherein the internal bore has an internal diameter that is sized to accommodate the passage of a pneumatic carrier there through and wherein the sidewall includes at least a first aperture;

at least a first UV light source supported proximate to said first aperture, wherein UV light from said UV light source is directed into said internal bore of said tube section;

a housing adapted to support said first UV light source proximate to said first aperture, wherein said housing engages at least a portion of an exterior surface of the tube section, wherein said first aperture is disposed within said housing; and

a pneumatic tube station adapted to send and receive pneumatic carriers to and from the pneumatic tube system, said pneumatic tube station having a sending/receiving tube interconnected to said tube section, wherein at least a portion of air accompanying the pneumatic carriers sent and received by the pneumatic tube system is exposed to said UV light source.

8. The system of claim 7, wherein said tube inlet is connected to a first pneumatic tube and said tube outlet is connected to a second pneumatic tube, wherein internal bores of said first and second pneumatic tubes are aligned with said internal bore of said tube section.

9. The system of claim 8, further comprising:

a controller operative to activate and deactivate said UV light source; and

a least one proximity sensor operative to identify a presence of a pneumatic carrier in one of said first pneumatic tube, said second pneumatic tube and said tube section, wherein said controller is further operative to deactivate said UV light source based on a detected presence of said a pneumatic carrier.

10. The system of claim 7, wherein said UV light source comprises;

a pulsed Xenon UV light source.

11. The system of claim 10, wherein pulses of said Xenon UV light source are between about 01. milliseconds and about 3 milliseconds in duration.

12. The system of claim 7, wherein at least a portion of air drawn into said pneumatic tube system from said pneumatic tube station is exposed to said first UV light source.

13. The system of claim 12, wherein at least a portion of air expelled from said pneumatic tube system out of said pneumatic tube station is exposed to said first UV light source prior to being expelled.

14. A system for at least partially disinfecting airflow in a pneumatic tube system, comprising:

a tube section having an internal bore at least partially defined by a sidewall extending between a tube inlet and a tube outlet, wherein the internal bore has an internal diameter that is sized to accommodate the passage of a pneumatic carrier there through and wherein the sidewall includes at least a first aperture and wherein said tube inlet is connected to a first pneumatic tube and said tube outlet is connected to a second pneumatic tube, wherein internal bores of said first and second pneumatic tubes are aligned with said internal bore of said tube section;

at least a first UV light source supported proximate to said first aperture, wherein UV light from said UV light source is directed into said internal bore of said tube section;

a housing adapted to support said first UV light source proximate to said first aperture, wherein said housing engages at least a portion of an exterior surface of the tube section, wherein said first aperture is disposed within said housing;

a controller operative to activate and deactivate said UV light source; and

a least one proximity sensor operative to detect a presence of a pneumatic carrier in one of said first pneumatic tube, said second pneumatic tube and said tube section, wherein said controller is further operative to activate and deactivate said UV light source based on a detected presence of said a pneumatic carrier.