SG11201810307VA - Method for determining reduced airflow in transport refrigeration system - Google Patents

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 1 MEM 0 11101 HOE 010 1111 1 0 01 010 11111100 Ell Hi 11110 1111 011 Organization International Bureau (10) International Publication Number (43) International Publication Date .....0\"\"\" WO 2017/205711 Al 30 November 2017 (30.11.2017) WIPO I PCT (51) International Patent Classification: (74) Agent: STANGO, Nicholas R.; CANTOR COLBURN GO1F 1/68 (2006.01) B60P 3/20 (2006.01) LLP, 20 Church Street, 22nd Floor, Hartford, Connecticut 06103-3207 (US). (21) International Application Number: PCT/US2017/034615 (81) Designated States (unless otherwise indicated, for every (22) International Filing Date: kind of national protection available): AE, AG, AL, AM, 26 May 2017 (26.05.2017) 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, (25) Filing Language: English DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, (26) Publication Language: English 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, (30) Priority Data: MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, 62/342,530 27 May 2016 (27.05.2016) US 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, (71) Applicant: CARRIER CORPORATION [US/US]; One TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. Carrier Place, Farmington, Connecticut 06032 (US). (84) Designated States (unless otherwise indicated, for every (72) Inventor: SENF, JR., Raymond L.; Kinne Street Building kind of regional protection available): ARIPO (BW, GH, Tr-19, East Syracuse, New York 13057 (US). 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, = (54) Title: METHOD FOR DETERMINING REDUCED AIRFLOW IN TRANSPORT REFRIGERATION SYSTEM = 200 -----• 54 136 108 = 22 = ..._ -- , 26 = 24 = 28 = 7 Llijk For4) iph, lc I • A. ------- \:--134 44 / --119 = 137 52 = 111 ) = = 144... — I _ I H = = 50 = 142 = ii i II II i j • 11•101N \" 36 's 140 38 48 118 — — = - _ 135 I I I I I I i i 1 I i 1 I 42 Hu iiii • 138 Hu '/ iiii 1111 Hu 34 40 1-1 110 FIG. 2 11 11 IN kr) (57) : A method of detecting airflow blockage of a transport refrigeration system including the steps of: activating a heater N powered by an electric generation device; measuring an output voltage of the electric generation device; determining a predicted heat ---, output of the heater in response to the output voltage; determining a predicted temperature rise across the heater in response to the I N predicted heat output; detecting a measured temperature rise across the heater; and determining an airflow reduction percentage in 1-1 C response to the predicted temperature rise across the heater and the measured temperature rise across the heater. ei O [Continued on next page] WO 2017/205711 Al 111110H310101011MMEM00101011M100ifil0II11EV0IS 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). Declarations under Rule 4.17: — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) — as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) — of inventorship (Rule 4.17(iv)) Published: — with international search report (Art. 21(3))