公开(公告)号：US09976953B2

公开(公告)日：2018-05-22

申请号：US14271859

申请日：2014-05-07

Applicant: The University of North Carolina at Charlotte ,  AquiSense Technologies LLC

Inventor： Jennifer Godwin Pagan ,  Edward Brittain Stokes ,  Paolo Batoni

IPC: G01N21/59 ,  A61L9/20 ,  G01N21/03 ,  G01N21/33 ,  C02F1/32

CPC classification number: A61L9/205 ,  A61L2/10 ,  A61L2209/11 ,  C02F1/32 ,  C02F1/325 ,  C02F2201/3222 ,  C02F2201/3225 ,  C02F2201/3227 ,  C02F2201/3228 ,  C02F2201/326 ,  C02F2201/328 ,  C02F2209/11 ,  C02F2303/04 ,  C02F2305/10 ,  G01N21/031 ,  G01N21/33 ,  G01N21/5907 ,  G01N2201/065

Abstract: The present disclosure relates generally to systems and methods for determining the absorption coefficient and the optical density of a fluid as they relate to the wavelength of incident radiation. Specifically, ultraviolet light-emitting diodes (UV LEDs) or the like that emit ultraviolet (UV) radiation or the like are used as sources for irradiating the interior of an integrating chamber that is designed to increase the path length of the radiation through the fluid, thus enhancing the detection limits of the absorption coefficient and the optical density according to Beer's Law.

公开(公告)号：US09938165B2

公开(公告)日：2018-04-10

申请号：US14523851

申请日：2014-10-25

Applicant: The University of British Columbia

Inventor： Fariborz Taghipour

IPC: C02F1/32 ,  C02F1/72 ,  C02F103/02

CPC classification number: C02F1/325 ,  C02F1/32 ,  C02F1/725 ,  C02F2103/026 ,  C02F2201/3222 ,  C02F2201/3228 ,  C02F2307/10 ,  C02F2307/12

Abstract: A reactor that operates with ultraviolet light emitting diodes (UV-LEDs) to attain UV photoreactions or UV photo-initiated reaction in a fluid flow for various applications, including water purification. The UV-LED reactor is comprised of a conduit means for passing fluid flow, an ultraviolet light emitting diode (UV-LED), and a radiation-focusing element to focus the UV-LED radiation to the fluid in the longitudinal direction of the conduit. The UV-LED reactor may include photocatalysts or chemical oxidants, which are activated by UV emitted by UV-LEDs for photocatalytic and photo-initiated reactions.

公开(公告)号：US09827340B2

公开(公告)日：2017-11-28

申请号：US14745760

申请日：2015-06-22

Applicant: Maxim Integrated Products, Inc.

Inventor： Jim Chih-Min Cheng ,  Cheng-Wei Pei

IPC: A61L2/10 ,  C02F1/32 ,  C02F1/00

CPC classification number: A61L2/10 ,  C02F1/002 ,  C02F1/325 ,  C02F2201/3222 ,  C02F2201/3224 ,  C02F2201/3228 ,  C02F2201/326 ,  C02F2209/006 ,  C02F2209/008 ,  C02F2303/04

Abstract: A mobile sterilization assembly, a mobile sterilization device, and method for sterilization using a mobile sterilization device are described for providing a low-cost and compact sterilization system using an ultraviolet light-emitting diode for sterilization. In an implementation, a mobile sterilization assembly includes a sterilization assembly couplable to a mobile device with a controller, the sterilization assembly including at least one light dispersive element; and an optical coupler configured to couple the at least one light dispersive element to a mobile device; where the at least one light dispersive element at least one of transmits and disperses light from at least one light-emitting diode or transmits light to a photodiode, where the at least one light-emitting diode or the photodiode are configured to be communicatively coupled to the controller.

公开(公告)号：US09808544B2

公开(公告)日：2017-11-07

申请号：US12416075

申请日：2009-03-31

Applicant: James Randall Cooper ,  Richard May

Inventor： James Randall Cooper ,  Richard May

IPC: B01J19/12 ,  A61L2/00 ,  A61L9/20 ,  A61M1/36 ,  C02F1/32 ,  C02F1/28 ,  C02F1/42 ,  C02F1/44

CPC classification number: A61L2/0047 ,  A61L2/0094 ,  A61L9/205 ,  A61L2202/22 ,  A61L2209/211 ,  A61L2209/212 ,  A61M1/3681 ,  A61M2205/053 ,  B01J19/123 ,  B01J19/124 ,  B01J2219/0877 ,  C02F1/283 ,  C02F1/325 ,  C02F1/42 ,  C02F1/441 ,  C02F2201/003 ,  C02F2201/3223 ,  C02F2201/3228 ,  C02F2201/328

Abstract: An apparatus for the treatment of a liquid that includes a chamber having at least one inner surface, the chamber adapted for passage of a fluid therethrough. The chamber is at least 80 percent enclosed. The apparatus also includes an optional ultraviolet-transmissive tube disposed within the chamber and also adapted for the passage of the liquid therethrough. The apparatus further includes an ultraviolet lamp disposed within the chamber and, optionally, within the ultraviolet-transmissive tube. A reflective material is interposed between the chamber and the transmissive tube. The reflective material is adapted so as to reflect at least a portion of light emitted by the ultraviolet lamp, wherein the reflective material is at least 80 percent reflective.

公开(公告)号：US09802840B2

公开(公告)日：2017-10-31

申请号：US14324528

申请日：2014-07-07

Applicant: Sensor Electronic Technology, Inc.

Inventor： Igor Shturm ,  Saulius Smetona ,  Timothy James Bettles ,  Yuri Bilenko ,  Ignas Gaska ,  Alexander Dobrinsky ,  Michael Shur ,  Remigijus Gaska

IPC: C02F1/00 ,  C02F1/32 ,  C02F9/00 ,  G01N21/33 ,  G01N21/85 ,  G01N21/94

CPC classification number: C02F1/325 ,  C02F1/001 ,  C02F2201/3222 ,  C02F2201/3226 ,  C02F2201/3227 ,  C02F2201/3228 ,  C02F2201/326 ,  C02F2201/328 ,  C02F2209/001 ,  C02F2209/005 ,  C02F2209/05 ,  C02F2209/11 ,  C02F2209/40 ,  C02F2303/04 ,  G01N21/33 ,  G01N21/85 ,  G01N21/94

Abstract: A solution for treating a fluid, such as water, is provided. An ultraviolet transparency of a fluid can be determined before or as the fluid enters a disinfection chamber. In the disinfection chamber, the fluid can be irradiated by ultraviolet radiation to harm microorganisms that may be present in the fluid. One or more attributes of the disinfection chamber, fluid flow, and/or ultraviolet radiation can be adjusted based on the transparency to provide more efficient irradiation and/or higher disinfection rates. In addition, various attributes of the disinfection chamber, such as the position of the inlet(s) and outlet(s), the shape of the disinfection chamber, and other attributes of the disinfection chamber can be utilized to create a turbulent flow of the fluid within the disinfection chamber to promote mixing and improve uniform ultraviolet exposure.

公开(公告)号：US09789215B1

公开(公告)日：2017-10-17

申请号：US15094873

申请日：2016-04-08

Applicant: RayVio Corporation

Inventor： Douglas A. Collins ,  Li Zhang ,  Yitao Liao

IPC: A61L2/10 ,  A61L9/20 ,  C02F1/32

CPC classification number: A61L2/10 ,  A61L9/20 ,  C02F1/325 ,  C02F2201/3222 ,  C02F2201/3228 ,  C02F2201/326 ,  C02F2303/04

Abstract: Embodiments of the invention include an ultraviolet (UV) source, the UV source including a semiconductor device comprising an active layer disposed between an n-type region and a p-type region. The active layer emits radiation having a peak wavelength in a UV range. A reflector cup is disposed around the UV source. A transparent cover is disposed over the reflector cup.

公开(公告)号：US20170225971A1

公开(公告)日：2017-08-10

申请号：US15501998

申请日：2015-08-06

Applicant: Greenthread Limited

Inventor： Andrew Henderson ,  Brian Nutley ,  Kim Nutley ,  Ross Clarke

IPC: C02F1/32 ,  B01F5/06 ,  B01F5/04

CPC classification number: C02F1/325 ,  B01F3/04503 ,  B01F3/04985 ,  B01F5/0057 ,  B01F5/04 ,  B01F5/0421 ,  B01F5/0473 ,  B01F5/048 ,  B01F5/06 ,  B01F5/0619 ,  B01F13/0006 ,  B01F2003/04886 ,  C02F1/78 ,  C02F2201/3223 ,  C02F2201/3227 ,  C02F2201/3228 ,  C02F2305/023 ,  C02F2305/10

Abstract: The invention provides an injector device for a water treatment apparatus, and a method of use. The injector device comprises a first coupling for fluid connection to a source of liquid to be treated; and a second coupling for fluid connection to at least one liquid treatment vessel arranged to expose liquid in the vessel to ultraviolet radiation in an advanced oxidation process reaction. The device comprises at least one injection port for injecting at least one gas into a liquid flowing through the injector device. The injector device is at least partially formed from a material that is transmissive to ultraviolet radiation. In another aspect, a water treatment apparatus defines a plurality of parallel flow streams between the inlet of the apparatus and the at least one liquid treatment vessel. The injector device comprises an injection port for each of the plurality of parallel flow streams.

公开(公告)号：US20170133882A1

公开(公告)日：2017-05-11

申请号：US15410825

申请日：2017-01-20

Applicant: Access Business Group International LLC

Inventor： Roy W. Kuennen ,  David W. Baarman ,  Scott A. Mollema ,  Ronald C. Markham ,  Dennis J. Denen

IPC: H02J50/10 ,  C02F1/00 ,  H05B37/02 ,  C02F1/32 ,  H02J50/80 ,  H02J50/90

CPC classification number: H02J50/10 ,  A61L2/10 ,  C02F1/001 ,  C02F1/008 ,  C02F1/32 ,  C02F1/325 ,  C02F9/005 ,  C02F2201/3228 ,  C02F2201/326 ,  C02F2209/005 ,  C02F2209/008 ,  C02F2209/40 ,  H01F38/14 ,  H02J50/80 ,  H02J50/90 ,  H05B37/00 ,  H05B37/0209 ,  H05B37/0218 ,  H05B37/0227 ,  H05B37/03 ,  H05B41/24 ,  H05B41/36 ,  Y02B20/19

Abstract: A ballast circuit is disclosed for inductively providing power to a load. The ballast circuit includes an oscillator, a driver, a switching circuit, a resonant tank circuit and a current sensing circuit. The current sensing circuit provides a current feedback signal to the oscillator that is representative of the current in the resonant tank circuit. The current feedback signal drives the frequency of the ballast circuit causing the ballast circuit to seek resonance. The ballast circuit preferably includes a current limit circuit that is inductively coupled to the resonant tank circuit. The current limit circuit disables the ballast circuit when the current in the ballast circuit exceeds a predetermined threshold or falls outside a predetermined range.

公开(公告)号：US20170129787A1

公开(公告)日：2017-05-11

申请号：US14933608

申请日：2015-11-05

Applicant: FLOW2, LLC

Inventor： Mark Fehring, SR. ,  Mark Fehring, JR. ,  Michael Fehring ,  Jeff Coomer ,  Jeff Luthman

IPC: C02F1/32 ,  C02F1/72

CPC classification number: C02F1/325 ,  C02F1/72 ,  C02F2201/3222 ,  C02F2201/3228 ,  C02F2303/04

Abstract: An ultraviolet disinfection device for a wastewater treatment system includes a tank having a tank inlet and a tank outlet, a treatment housing within the interior chamber and forming a treatment chamber, an ultraviolet light emitting device within the treatment chamber and emitting radiation having a disinfecting effect on bacteria, and a sample well disposed within the interior chamber and forming a well chamber. The tank forms an interior chamber so that effluent discharged from the wastewater treatment system and enters a tank inlet and flows into the interior chamber. Effluent within the interior chamber enters the treatment chamber through a housing inlet and flows past the ultraviolet light emitting device within the treatment chamber to a housing outlet. Disinfected effluent discharged from the housing outlet enters a well inlet and into the well chamber, and disinfected effluent within the well chamber flows through a well outlet to the tank outlet and is discharged from the tank through the tank outlet.

公开(公告)号：US09617171B2

公开(公告)日：2017-04-11

申请号：US14889608

申请日：2014-04-24

Applicant: Merck Patent GmbH

Inventor： Pascal Rajagopalan ,  Julien Gross ,  Ichiro Kano ,  Yves Gaignet

IPC: C02F1/32

CPC classification number: C02F1/325 ,  C02F2201/3222 ,  C02F2201/3227 ,  C02F2201/3228 ,  C02F2303/04

Abstract: A biocidal purification reactor, including a main cylinder tube (1A;1B), at least one end cap (2A,2B,2C) closing at least one axial end opening of the main cylinder tube (1A;1B), at least two ports (3A,3B) communicating with the interior volume (4) of the main cylinder tube (1A;1B) in the vicinity of the respective axial ends of the cylinder tube (1A;1B), and at least one of said end caps (2A) or said main cylinder tube (1B) including a UV-light source (7A;7B).