SG11201806412QA - Low-pressure ultraviolet radiator with multiple filaments - Google Patents

Abstract

WO 1714427 / 3 Al (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2017/144273 Al 31 August 2017 (31.08.2017) WIPO I PCT 11111111111111011101111111111101011111011101011101111101011111011111111111110111111 (51) International Patent Classification: HO1J 61/92 (2006.01) HO1J 61/72 (2006.01) CO2F 1/32 (2006.01) (21) International Application Number: PCT/EP2017/052723 (22) International Filing Date: 8 February 2017 (08.02.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 16156959.5 23 February 2016 (23.02.2016) EP (71) Applicant: XYLEM IP MANAGEMENT S.A R.L. [LU/LU]; 11 Breedewues, 1259 Senningerberg (LU). (72) Inventor: LOESENBECK, Jan Boris; Kantstrasse 18, 33615 Bielefeld (DE). (74) Agent: LENZING GERBER STUTE PARTNER- SCHAFTSGESELLSCHAFT VON PATENTANWAL- TEN M.B.B.; BahnstraBe 9, 40212 Diisseldorf (DE). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: with international search report (Art. 21(3)) (54) Title: LOW-PRESSURE ULTRAVIOLET RADIATOR WITH MULTIPLE FILAMENTS (57) : A low pressure mercury gas discharge ultraviolet lamp with a tubular elongate body (2) with two opposing ends, a first end (4) and a second end (5), which contains a gas filling (3), and with at least two electric connectors at each end, which are electrically connected to at least one filament being provided at each end, wherein a discharge length (I) is defined between the fila- ments, is disclosed, in which at least two filaments (a,c and b,d) are provided at each end of the discharge length (I), wherein the fila- ments (a,c; b,d) can be individually supplied with electric energy, and wherein the at least two filaments (a,c) at the first end (4) are of different size and different mass, and the at least two filaments (b,d) at the second end (5) are of different size and different mass.