Patent · US Expired

Device for disinfecting water comprising a UV-C gas discharge lamp

US6398970B1 · kind B1 · utility

64Cited by

11References

8Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Thomas Justel · Witten, DE
Hans Nikol · Aachen, DE
Jürgen Dirscherl · Aachen, DE
Detlef Uwe Wiechert · Alsdorf, DE

Key dates

Filing date	Apr 27, 2000
Grant date	Jun 4, 2002
Priority date	—
Expiry date	Apr 27, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC02F2201/3228
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The device for disinfecting water comprises a gas discharge lamp including a discharge vessel with walls composed of a dielectric material, which walls are provided on their outer surfaces with at least a first and a second electrode, and which discharge vessel contains a gas filling containing xenon, the inner surface of the walls being at least partly covered with a coating containing a phosphor emitting in the UV-C range. Such a device for disinfecting water can always be made 100% operation within milliseconds, and the UV-radiation of the device has a spectral composition which lies exclusively in the range relevant for disinfecting, i.e. between 230 and 300 nm.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.