Patent SG-11201811639W-A (SG)
Title: Heater management
Inventor: BILAT STEPHANE
IPC: A24F40/53
Filed: 2017-07-05
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication 01 February 2018 (01.02.2018) 1000111111 OH 1111110111011 00 11110 1111 110 III1 Publication Number 2018/019533 A8 CORRECTED VERSION --, 111111411 0 11101 HOE (10) International l i Date ...../ WO W 1 PO I PCT (51) (21) (22) (25) Filing Language: (26) (30) (71) International Patent Classification: (72) Inventors: BILAT, Stephane; Grandchamp 9, 2015 A24F 47/00 (2006.01) Areuse (CH). COLOTTE, Guillaume; Route de Porn- International Application Number: paples 5, 1321 Amex sur Orbe (CH). PCT/EP2017/066838 (74) Agent: SPENCER, James; Reddie & Grose LLP, The White Chapel Building, 10 Whitechapel High Street, Lon- International Filing Date: 05 July 2017 (05.07.2017) don Greater London El 8QS (GB). English (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, Publication Language: English AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, Priority Data: CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, 16180977.7 25 July 2016 (25.07.2016) EP DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, Applicant: PHILIP MORRIS PRODUCTS S.A. KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, [CH/CH]; Quai Jeanrenaud 3, CH-2000 Neuchatel (CH). 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, Title: ARmax system comprises minimum (54) (57) supply, en circuitry t:N electrical GC determined : the electrical subsequent AR being to HEATER and electric resistance threshold R R max re configured heater electrical MANAGEMENT & puff Atpuff R i 1 1 R i Atpuff ----1-1------1--4-1-- At puff 4 At 1 4—* ► I — ---- 1 ---- 1 -- 1 -- 1 - 1 ----- t At i , +------40 , , 4 0 At 1 4—* 4 At 1 4—* ► 1 J. 1 — 7 — I I I R21 I I I I I I I I I I I i I I R 2 I I I i I R I I I I I I I I I I I I t1 t2 t3 t1 t2 th t3 t1 t2 th t3 t1 t2 th t3 t(S) An electrically and be an adverse condition or to provide an indication if there is determined to be an adverse condition '...—„, r —d P 1 P2 P 3 P 4 FIG. 6 operated aerosol-generating system comprising means to detect adverse conditions, such as a dry heater. an electric heater comprising at least one heating element for heating an aerosol-forming substrate, a power circuitry (109) connected to the electric heater and to the power supply and comprising a memory, the electric to: measure an initial electrical resistance (R1) of the electric heater; measure a subsequent electrical resistance after the measurement of the initial electrical resistance; determine the difference (AR) between the initial the subsequent electrical resistance; determine an adverse condition when the determined difference between resistance and the initial electrical resistance is greater than a maximum threshold value (AR max ) or is less than value (AR ri i ii ) stored in the memory; and control power supplied to the electric heater based on whether there is pt The M of kr) ,-1 the --.... a 1-1 0 N C [Continued on next page] WO 2018/019533 A8 MIDEDIMOMMIONERIONIMMHEINUMOVE# 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)) (48) Date of publication of this corrected version: 22 March 2018 (22.03.2018) (15) Information about Correction: see Notice of 22 March 2018 (22.03.2018)