Patent SG-11201903069W-A (SG)
Title: Controller unit for controlling the speed of a motor driving an oil injected compressor and method of controlling said speed
Inventor: MOENS WIM
IPC: F04C28/08
Filed: 2017-10-19
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 111111101111011101 HIM 0111 110 100111111111111111111111111111111111111111111 Organization International Bureau (10) International Publication Number (43) International Publication Date .....0\"\" WO 2018/078491 Al 03 May 2018 (03.05.2018) W I P0 I P C T (51) International Patent Classification: (71) Applicant: ATLAS COPCO AIRPOWER, NAAM- F04C 28/08 (2006.01) FO4B 49/06 (2006.01) LOZE VENNOOTSCHAP [BE/BE]; Boomsesteenweg F04C 28/28 (2006.01) F04B 49/20 (2006.01) 957, 2610 Wilrijk (BE). (21) International Application Number: (72) Inventor: MOENS, Wim; c/o ATLAS COPCO AIRPOW- PCT/IB2017/056491 ER NV, Boomsesteenweg 957, 2610 Wilrijk (BE). (22) International Filing Date: (74) Agent: VAN VARENBERG, Patrick et al.; Aren- 19 October 2017 (19.10.2017) bergstraat 13, 2000 Antwerpen (BE). (25) Filing Language: Dutch (81) Designated States (unless otherwise indicated, for every (26) Publication Language: English kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, (30) Priority Data: CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, 62/412,540 25 October 2016 (25.10.2016) US DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, 2017/5066 02 February 2017 (02.02.2017) BE HR, HU, ID, IL, IN, IR, IS, JO, 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, _ (54) Title: CONTROLLER UNIT FOR CONTROLLING THE SPEED OF A MOTOR DRIVING AN OIL INJECTED COM- PRESSOR AND METHOD OF CONTROLLING SAID SPEED = = _ 1 = — = _ = 13 14 V • 10 • . 11 • ' ...,........ ,9 15 16 — = = T '+'-. - ... \,. \. • i b.* = = 2 = = 5 6 Mia* in = 21 ,-1 Figure 1 <C 1-1 (57) : The present invention is directed to a controller unit for controlling the speed of a motor (3) for driving an oil injected 01 iv compressor (1), said controller unit (9) comprising: a data connection (12, 13, 14); a first module (17) configured to receive data through GC said data connection (12, 13, 14); whereby the controller unit (9) further comprises -a processing unit (18a) determining a minimum IN working speed (rpm m i ii )of the motor (3) on the basis of the measured working pressure (pw), the ambient temperature (Tambient) and 0 ---- a dew point temperature (Tdew and a comparator unit (19a) configured to compare the determined minimum working speed point); GC (rpmmin) with the retrieved working speed (rpm) of the motor (3) and, said processing unit (18a) further comprising a , 1 0 ei O [Continued on next page] WO 2018/078491 Al MIDEDIMOMOIDEIREIDIONOMMOIEHMOVOIMIE 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). Declarations under Rule 4.17: — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) — of inventorship (Rule 4.17(iv)) Published: — with international search report (Art. 21(3)) signal generating unit (20a) configured to send a signal to said motor for increasing the working speed (rpm) of the motor (3) to at least the determined minimum working speed (rpmm), if said retrieved working speed (rpm) is lower than the determined minimum m working speed (rpmmin)•