Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2019008220) AN ELECTRIC MACHINE
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2019/008220 International Application No.: PCT/FI2018/050259
Publication Date: 10.01.2019 International Filing Date: 11.04.2018
IPC:
H02K 5/20 (2006.01) ,H02K 9/10 (2006.01) ,H02K 9/19 (2006.01) ,H02K 9/197 (2006.01)
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
K
DYNAMO-ELECTRIC MACHINES
5
Casings; Enclosures; Supports
04
Casings or enclosures characterised by the shape, form, or construction thereof
20
with channels or ducts for flow of cooling medium
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
K
DYNAMO-ELECTRIC MACHINES
9
Systems for cooling or ventilating
10
by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
K
DYNAMO-ELECTRIC MACHINES
9
Systems for cooling or ventilating
19
for machines with closed casing and with closed-circuit cooling using a liquid cooling medium, e.g. oil
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
K
DYNAMO-ELECTRIC MACHINES
9
Systems for cooling or ventilating
19
for machines with closed casing and with closed-circuit cooling using a liquid cooling medium, e.g. oil
197
in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
Applicants:
THE SWITCH DRIVE SYSTEMS OY [FI/FI]; Salpausselänkatu 291 53850 LAPPEENRANTA, FI
Inventors:
TURUNEN, Janne; FI
BOSCH, Michiel; FI
Agent:
FINNPATENT OY; Smart Chemistry Park Raisionkaari 55 21200 RAISIO, FI
Priority Data:
2017565305.07.2017FI
Title (EN) AN ELECTRIC MACHINE
(FR) MACHINE ÉLECTRIQUE
Abstract:
(EN) A stator of an electric machine comprises windings (101), a ferromagnetic core structure (102), and a frame structure (103) surrounding the ferromagnetic core structure. The frame structure comprises a first channel (106) for conducting first cooling medium which is circulated through the airgap of the electric machine and a second channel (107) isolated from the first channel and suitable for conducting second cooling medium for receiving heat from the first cooling medium. The first channel is twisting so that the first channel is made longer and the cross-sectional flow area of the first channel is made smaller. Thus, the flow velocity in the first channel can be kept sufficiently high despite that the volume flow rate of the first cooling medium is restricted by the airgap. The higher flow velocity in the first channel improves the heat transfer from the first cooling medium to the second cooling medium.
(FR) Selon la présente invention, un stator d'une machine électrique comprend des enroulements (101), une structure de noyau ferromagnétique (102), et une structure d'armature (103) entourant la structure de noyau ferromagnétique. La structure d'armature comprend un premier canal (106) destiné à conduire un premier milieu de refroidissement qui s'écoule dans l'entrefer de la machine électrique, et un second canal (107) isolé du premier canal et approprié pour conduire un second milieu de refroidissement de façon à recevoir de la chaleur du premier milieu de refroidissement. Le premier canal est sinueux de façon à être plus long et que sa zone d'écoulement en coupe transversale soit rendue plus petite. Ainsi, la vitesse d'écoulement dans le premier canal peut être maintenue suffisamment élevée en dépit du fait que le débit volumique du premier milieu de refroidissement est limité par l'entrefer. La vitesse d'écoulement plus élevée dans le premier canal améliore le transfert de chaleur du premier milieu de refroidissement au second milieu de refroidissement.
front page image
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: English (EN)
Filing Language: English (EN)