Patent SG-11201804137T-A (SG)
Title: Economized device control for refrigeration systems
Inventor: SUN JIAN
IPC: F25D29/00
Filed: 2016-11-16
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -' Organization International Bureau (43) International Publication Date ..... .....r ...) 8 June 2017 (08.06.2017) W I P0 1 PCT ID Hit (10) 111111111111111111Ill WO International IIIII II 2017/095631 III 11111101 Publication IIIIIIIIII I IIII Number Al RIO IIII IIIIIIII (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every F25B 49/02 (2006.01) F25D 29/00 (2006.01) kind of national protection available): AE, AG, AL, AM, F25B 1/10 (2006.01) F25D 11/00 (2006.01) 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, (21) International Application Number: DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, PCT/US2016/062191 HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, (22) International Filing Date: KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, 16 November 2016 (16.11.2016) 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, (25) Filing Language: English SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, (26) Publication Language: English TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (30) Priority Data: 62/261,521 1 December 2015 (01.12.2015) US (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (71) Applicant: CARRIER CORPORATION [US/US]; One GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, Carrier Place, Farmington, Connecticut 06032 (US). TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, (72) Inventors: SUN, Jian; P.O. Box 4805, Carrier Parkway, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, TR19, Syracuse, New York 13221 (US). PERKOVICH, 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, Mark J.; P.O. Box 4805, Carrier Parkway, TR19, Syra- SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, cuse, New York 13221 (US). GW, KM, ML, MR, NE, SN, TD, TG). Agent: HOWENSTINE, Jared B.; CANTOR COLBURN = (74) Declarations Rule 4.17: under LLP, 20 Church Street, 22nd Floor, Hartford, Connecticut 06103-3207 (US). — as to applicant's entitlement to apply for and be granted a patent (Rule 4.170) [Continued on next page] (54) Title: ECONOMIZED DEVICE CONTROL FOR REFRIGERATION SYSTEMS (57) : Methods and systems 220 for operating a refrigeration unit are FIG. 2 provided. The methods and systems in- clude measuring a first characteristic of 224 a refrigeration unit, calculating a com- 223 pressor middle stage pressure based on KN the first measured characteristic, de- if first termining a comparison and a second comparison are satisfied based on the first measured characteristic and 248 the calculated compressor middle stage 225 and opening an economizer pressure, 254 solenoid valve when the first comparis- on and the second comparison are sat- 246 < J L---._. isfied. 256 258 222 _____- 2 _,. 252 250 \-.._. 260 1-1 .4t 11 M in ------ 228 01 0 IN 1-1 0 ei O WO 2017/095631 Al MIDEDIMOMONIIMMEHMOME110110MOIMOVOIMIE — as to the applicant's entitlement to claim the priority of Published: the earlier application (Rule 4.17(iii)) — of inventorship (Rule 4.17 (iv)) — with international search report (Art. 21(3))