Patent AU-2013201984-B2 (AU)
Title: Improvements in fluid conditioning
Inventor: THOMSON STEPHEN
IPC: C02F1/48
Filed: 2013-03-26
Granted: 2015-01-22
Abstract: (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 W O 2013/149287 A1 10 October 2013 (10.10.2013) W I PO I P CT (51) International Patent Classification: (74) Agent: SPRUSON & FERGUSON; GPO Box 3898, C02F 1/48 (2006.01) H02K 1/06 (2006.01) Sydney, New South Wales 2001 (AU). GO1N27172 (2006.01) (81) Designated States (unless otherwise indicated, for every (21) International Application Number: kind of national protection available): AE, AG, AL, AM, PCT/AU2013/000305 AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, ) .a BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, (22) International Fing Date: 26 March 2013 (26.03.2013) DO, DZ, EC, EE, EG, ES, Fl, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, (25) Filing Language: English KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, (26) Publication Language: English NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, (30) Priority Data: RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, 2012901312 2 April 2012 (02.04.2012) AU TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (71) Applicant: CALCLEAR INVESTMENTS PTY LIM ITED [AU/AU]; Suite 207, 20 Dale Street, Brookvale. (84) Designated States (unless otherwise indicated, for every NSW 2100 (AU). kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, (72) Inventors: FAYLE, Robyn, Anne; Unit 25, 11 Addison UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, Road, Manly, NSW 2095 (AU). THOMSON, Stephen; 4 TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Banksia Place, Greystanes, NSW 2145 (AU). EE, ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, [Continued on next page] (54) Title: IMPROVEMENTS IN FLUID CONDITIONING (57) Abstract: A fluid conditioning control system for driving one or 301 more coils in a fluid conditioning system with a target load current to gen erate an alternating magnetic field directed at a fluid, the control system 303 313 comprising a controller, a switch mode power supply circuit and a push pull AC drive circuit, wherein the controller is arranged to develop a first variable output having a frequency range that sweeps between a minimum 311 frequency and a maximum frequency, and further arranged to develop a second variable output in the form of a duty cycle controlled signal, wherein the switch mode power supply circuit is arranged to develop a Ps + SMPS variable supply voltage to the AC drive circuit in response to the second 31 variable output and a current sense circuit, and the AC drive circuit is ar ranged to develop a drive signal for developing a target load current in re sponse to the first variable output and the variable supply voltage, thereby +5v 321 forming a current feedback loop. PROC% " "" BR DbE LOAD 305 307 309 317 Figure 3 W O 20 13/14 92 87 A 1|lllll |l ll l | | | | | | | || | |||||||||||||||||||||I||||||||||||||||||||||D|||||||| TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, Published: ML, MR, NE, SN, TD, TG). - with international search report (Art. 21(3))