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1. (WO2019064761) AXIAL FLOW FAN, METHOD FOR MODIFYING COMPRESSOR AND TURBINE BLADE, AND BLADE OBTAINED BY MODIFICATION
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Pub. No.: WO/2019/064761 International Application No.: PCT/JP2018/024385
Publication Date: 04.04.2019 International Filing Date: 27.06.2018
IPC:
F01D 5/14 (2006.01) ,F01D 9/02 (2006.01) ,F01D 25/00 (2006.01) ,F02C 7/00 (2006.01) ,F04D 29/38 (2006.01) ,F04D 29/54 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5
Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
12
Blades
14
Form or construction
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
9
Stators
02
Nozzles; Nozzle boxes; Stator blades; Guide conduits
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
25
Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
C
GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
7
Features, component parts, details or accessories, not provided for in, or of interest apart from, groups F02C1/-F02C6/158; Air intakes for jet-propulsion plants
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
29
Details, component parts, or accessories
26
Rotors specially adapted for elastic fluids
32
for axial-flow pumps
38
Blades
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
29
Details, component parts, or accessories
40
Casings; Connections for working fluid
52
for axial pumps
54
Fluid-guiding means, e.g. diffusers
Applicants:
株式会社IHI IHI CORPORATION [JP/JP]; 東京都江東区豊洲三丁目1番1号 1-1, Toyosu 3-chome, Koto-ku, Tokyo 1358710, JP
Inventors:
古川 樹生 FURUKAWA Juo; JP
浜辺 正昭 HAMABE Masaaki; JP
Agent:
長門 侃二 NAGATO Kanji; JP
Priority Data:
2017-19106729.09.2017JP
Title (EN) AXIAL FLOW FAN, METHOD FOR MODIFYING COMPRESSOR AND TURBINE BLADE, AND BLADE OBTAINED BY MODIFICATION
(FR) VENTILATEUR À FLUX AXIAL, PROCÉDÉ DE MODIFICATION D'UNE AUBE DE COMPRESSEUR ET DE TURBINE, ET AUBE OBTENUE PAR MODIFICATION
(JA) 軸流型のファン、圧縮機及びタービンの翼の改造方法、及び当該改造により得られる翼
Abstract:
(EN) Provided is a blade in which secondary flow loss has been reduced without changing the aerodynamic design of a base blade. This blade comprises: a base blade part; and a protruding part provided on a positive-pressure surface in the vicinity of the trailing edge of at least one among a hub region and a tip region of the base blade part. The blade form in a span direction in which the protruding part is provided is obtained by changing the trailing edge part curve of a base blade form into a corrected trailing edge part curve. The corrected trailing edge part curve comprises: a portion on a negative-pressure side with respect to the trailing edge of the trailing edge part curve of the base blade form in the span direction position at which the protruding part is provided; and a protruding part curve. The protruding part curve comprises a concave leading-side curve and a convex trailing-side curve. The trailing-side curve is a portion of an ellipse or a circle, and the leading-side curve is a curve that smoothly connects the trailing side curve and the positive pressure-side curve.
(FR) L'invention concerne une aube dans laquelle une perte d'écoulement secondaire a été réduite sans changer la conception aérodynamique d'une aube de base. Cette aube comprend: une partie d'aube de base; et une partie en saillie disposée sur une surface à pression positive au voisinage du bord de fuite d'au moins l'une parmi une région de moyeu et une région de pointe de la partie d'aube de base La forme d'aube dans une direction d'envergure dans laquelle la partie en saillie est pourvue, est obtenue en changeant la courbe de partie de bord de fuite d'une forme d'aube de base en une courbe de partie de bord de fuite corrigée. La courbe de partie de bord de fuite corrigée comprend: une partie sur un côté à pression négative par rapport au bord de fuite de la courbe de partie de bord de fuite de la forme d'aube de base dans la position de direction d'envergure au niveau de laquelle la partie en saillie est prévue; et une courbe de partie en saillie. La courbe de partie en saillie comprend une courbe côté avant concave et une courbe côté arrière convexe. La courbe côté arrière est une partie d'une ellipse ou d'un cercle, et la courbe côté avant est une courbe qui relie de manière continue la courbe côté arrière et la courbe côté à pression positive.
(JA) ベース翼の空力設計を変更することなく二次流れ損失を低減した翼を提供する。 ベース翼部と、ベース翼部のハブ領域及びチップ領域の少なくとも一方の後縁近傍の正圧面に設けられた隆起部と、から成り、隆起部が設けられたスパン方向位置における翼型は、ベース翼型の後縁部曲線を修正後縁部曲線に変更したものであり、修正後縁部曲線は、隆起部が設けられたスパン方向位置におけるベース翼型の後縁部曲線のうち後縁より負圧側の部分と、隆起部曲線と、から構成され、隆起部曲線は、凹状の前側曲線と、凸状の後側曲線と、から構成され、後側曲線は、楕円または円の一部であり、前側曲線は、後側曲線と正圧側曲線とを滑らかに接続する曲線である。
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Designated States: 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, DJ, DK, DM, DO, 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, 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, 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)