Claims
- 1. A rotating machine having a stator core and being equipped with coolers for cooling a cooling medium which is circulated inside the machine by the rotation of a fan installed near a rotating axis of the rotating machine, said coolers being installed in a ventilation passage for said cooling medium and comprising a primary cooler installed in a primary ventilation passage extending from an exhaust side of said fan to a suction side of said fan via the stator core, and a secondary cooler installed in a secondary ventilation passage extending from the exhaust side of said fan in said primary ventilation passage to an inside of an inner surface of said stator core via the stator core.
- 2. A rotating machine according to claim 1, wherein the stator core is equipped with multiventilation ducts through the cooling medium is circulated along a radial direction, and a ventilation area per unit length of said ventilation ducts is varied according to a ventilation direction of the cooling medium.
- 3. A rotating machine having a stator core and being equipped with coolers for cooling a cooling medium which is circulated inside the rotating machine by rotation of a fan installed near a rotating axis of the rotating machine, said coolers being installed in a ventilation passage for said cooling medium and comprising a primary cooler installed in a primary ventilation passage extending from the exhaust side of said fan to a suction side of said fan via the stator core, and a secondary cooler installed in a secondary ventilation passage that extends from before the primary cooler in said primary ventilation passage to the exhaust side of said fan via an end of the stator core.
- 4. A rotating machine having a stator core and being equipped with coolers for cooling a cooling medium which is circulated inside the machine by rotation of a fan installed near a rotation axis of the rotating machine, at least one ventilation passage providing a path for the cooling medium which extends from an exhaust side of said fan at least once through the stator core to a suction side of said fan, and at least one of said coolers being installed in said at least one ventilation passage at a position prior to the cooling medium circulating in said at least one ventilation passage and passing along the path thereof extending at least once through the stator core, and at least another of said coolers being installed in said at least one ventilation passage at a passage at a position after the cooling medium circulating in said at least one ventilation passage passes along the path thereof extending at least once through the stator core.
Priority Claims (2)
Number |
Date |
Country |
Kind |
10-333675 |
Nov 1998 |
JP |
|
11-71408 |
Mar 1999 |
JP |
|
CROSS REFERENCE TO RELATED APPLICATION
This is a continuation of U.S. application Ser. No. 09/587,293, filed Jun. 5, 2000, which is a divisional of U.S. application Ser. No. 09/443,105, filed Nov. 18, 1999, now U.S. Pat. No. 6,201,323, issued Mar. 13, 2001, and is related to copending applications Ser. No. 09/587,289, filed Jun. 5, 2000 and Ser. No. 09/587,292, filed Jun. 5, 2000, the subject matter of which is incorporated by reference herein.
US Referenced Citations (13)
Foreign Referenced Citations (9)
Number |
Date |
Country |
57-42560 |
Mar 1982 |
JP |
58-95171 |
Jun 1983 |
JP |
58-121166 |
Aug 1983 |
JP |
60-162432 |
Aug 1985 |
JP |
7-177705 |
Jul 1995 |
JP |
52-1402 |
Jan 1997 |
JP |
52-1403 |
Jan 1997 |
JP |
10-146022 |
May 1998 |
JP |
2-70247 |
Sep 2000 |
JP |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09/587293 |
Jun 2000 |
US |
Child |
09/871907 |
|
US |