Patent SG-11201407921V-A (SG)
Title: Turbine blade root with microcircuit cooling passages
Inventor: BEATTIE JEFFREY S
IPC: F01D5/18
Filed: 2013-05-20
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 13 February 2014 (13.02.2014) WIPOIPCT (10) International Publication Number WO 2014/025440 A3 (51) International Patent Classification: F01D 5/18 (2006.01) F02C 7/12 (2006.01) F01D 25/12 (2006.01) (21) International Application Number: (22) International Filing Date: (25) Filing Language: (26) Publication Language: PCT/US2013/041776 20 May 2013 (20.05.2013) English (30) Priority Data: 13/484,767 31 May 2012 (31.05.2012) (71) Applicant: UNITED TECHNOLOGIES CORPORA­ TION [US/US]; One Financial Plaza, Hartford, Connectic­ ut 06101 (US). (72) Inventors: BEATTIE, Jeffrey S.; 255 Foote Road, South Glastonbury, Connecticut 06073 (US). JACQUES, Jef­ frey Michael; 58 Shaughnessy Drive, East Hartford, Con­ necticut 06118 (US). PIGGUSH, Justin D.; 2120 Ferry Street, La Crosse, Wisconsin 54601 (US). (74) Agent: SIRAGUSA, John M.; CARLSON, GASKEY & OLDS/PRATT & WHITNEY, c/o CPA Global, P.O. Box 52050, Minneapolis, Minnesota 55402 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available)'. AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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, 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. US English (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, 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, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) — before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) (88) Date of publication of the international search report: 17 April 2014 (54) Title: TURBINE BLADE ROOT WITH MICROCIRCUIT COOLING PASSAGES o •t •t CJ o o CJ o & FIG.2 (57) Abstract: A method of fabricating an airfoil includes the steps of fabricating first core including a a first plurality of ribs defin­ ing first a plurality of passages of a completed airfoil, and fabricating as second core including second a plurality of ribs defining a second plurality of passages of the completed airfoil. The second plurality of ribs includes plurality of standoffs. a The plurality of standoffs set a spacing between the first plurality of ribs and the second plurality of ribs to define a spacing between the first plural­ ity of channels and the second plurality of channels of the completed airfoil. The airfoil is then molded about the core assembly. Once completed, the core assembly is removed to provide completed airfoil incorporating multiple microcircuits with desired a a sta­ bility and structural integrity.