WO2010093019A1 - 回転電機及び回転電機の冷却方法 - Google Patents

回転電機及び回転電機の冷却方法 Download PDF

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Publication number
WO2010093019A1
WO2010093019A1 PCT/JP2010/052089 JP2010052089W WO2010093019A1 WO 2010093019 A1 WO2010093019 A1 WO 2010093019A1 JP 2010052089 W JP2010052089 W JP 2010052089W WO 2010093019 A1 WO2010093019 A1 WO 2010093019A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil end
electrical machine
rotating electrical
cooling
coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2010/052089
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
崇志 阿部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Meidensha Corp, Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Corp
Publication of WO2010093019A1 publication Critical patent/WO2010093019A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

Definitions

  • the present invention relates to a rotating electrical machine such as a motor and a generator and a cooling method for the rotating electrical machine, and in particular, can greatly improve the cooling efficiency.
  • a rotating electric machine such as a motor or a generator supports a rotating shaft provided with a rotor having magnetic force on an outer peripheral surface so as to be rotatable inside the frame, and attaches a stator with a coil wound around a core to the inner surface of the frame, for example,
  • a rotational force can be obtained by passing an electric current through the stator coil and rotating the rotor to rotate the rotating shaft.
  • the rotor is rotated by rotating the rotating shaft. By rotating the, the current can be taken out from the coil of the stator.
  • stator since the stator generates heat due to the current flowing through the stator coil, and the operation efficiency such as power generation efficiency and rotation efficiency is reduced, the stator is cooled.
  • a supply pipe that supplies cooling oil to the coil end of the coil of the stator by supplying the cooling oil is provided inside the frame, and a groove for guiding the circulation of the cooling oil. Is formed on the surface of the coil end of the stator coil, and the cooling oil supplied from the nozzle is circulated along the groove in the coil end of the stator coil so that the stator can be efficiently cooled with the cooling oil.
  • a rotating electrical machine is proposed.
  • an object of the present invention is to provide a rotating electrical machine and a method for cooling the rotating electrical machine that can exhibit high cooling capacity with a minimum structural change.
  • a rotating electrical machine includes a rotor provided on an outer surface of a rotating shaft and a core disposed to face the outer surface of the rotor at a predetermined interval.
  • a rotating electrical machine comprising a stator around which a coil is wound and a coolant supply means for supplying coolant to the coil end of the coil, the end of the coil end protrudes radially outward of the rotating shaft.
  • a cooling liquid supply means for supplying the cooling liquid to the core side of the coil end rather than the flange.
  • the rotating electrical machine according to the present invention is characterized in that, in the rotating electrical machine described above, the coolant feeding means feeds the coolant from above the coil end.
  • the cooling method for a rotating electrical machine according to the present invention is a cooling method for a rotating electrical machine using the above-described rotating electrical machine, and the flange portion of the coil end from above the coil end by the coolant supply means. Further, the cooling liquid is supplied to the core side to contact the outer peripheral surface of the coil end without leaking the cooling liquid to the outside of the coil end.
  • the coolant can be brought into contact with most of the outer peripheral surface without leaking to the outside of the coil end. Since the surface area required for heat exchange between the coolant and the stator can be made larger than before, and the cooling efficiency can be improved as compared with the conventional one, a high cooling capacity can be expressed with a minimum structural change.
  • FIG. 1 is an axial sectional view showing a schematic structure of a rotating electrical machine.
  • a rotary shaft 12 in a horizontal axial direction is rotatably supported via a bearing 12a inside a sealed frame 11 that is cylindrical in the horizontal axial direction.
  • the shaft 12 penetrates the frame 11 so that at least one end side protrudes to the outside of the frame 11.
  • a rotor 13 having a magnetic force is attached to the outer peripheral surface of the rotary shaft 12 inside the frame 11.
  • Bolts are arranged on the inner peripheral surface of the frame 11 so that a stator 14 in which a coil made of a copper wire is wound around a core made of a cylindrical iron core faces the outer surface of the rotor 13 with a predetermined distance. ) Is attached through.
  • the rotating shaft 12 is located more than on the inner side in the axial direction of the rotating shaft 12.
  • the flanges 14b projecting radially outward are provided over the entire circumferential length of the rotating shaft 12 (the entire circumference in the rotational direction).
  • the flange portion 14b can be variously formed by molding the end portion of the coil end 14a of the coil or by separately attaching a member to the end portion of the coil end 14a of the coil. By this means, it can be provided at the end of the coil end 14a of the coil.
  • a supply pipe 15 is attached to the upper end of the frame 11 near the both ends in the axial direction.
  • the supply pipes 15 have their tips directed to the core side (in the axial direction of the rotary shaft 12) from the flange 14b of the coil end 14a. ing.
  • Discharge pipes 16 that connect the inside and the outside of the frame 11 are respectively attached to both ends of the lowermost axial direction of the frame 11.
  • the base end side of the supply pipe 15 is connected to a cooling oil feed outlet of a cooling oil temperature adjusting / feeding machine (not shown) that feeds the cooling oil 1 as a cooling liquid to a predetermined temperature.
  • the base end side of the discharge pipe 16 is connected to the cooling oil receiving port of the cooling oil temperature control feeder.
  • the supply pipe 15, the discharge pipe 16, the cooling oil temperature adjusting / feeding machine, and the like constitute a coolant supply means.
  • the cooling oil 1 flowing down the coil end 14a was collected from the inside of the frame 11 via the discharge pipe 16 to the cooling oil temperature adjusting machine, and the temperature was adjusted by the cooling oil temperature adjusting machine. It is recycled by being fed again through the supply pipe 15 later.
  • the flange portion 14b is provided only at the end portion of the coil end 14a (the axially outer side of the rotating shaft 12).
  • the cooling oil 1 does not leak to the outside in the axial direction of the rotating shaft 12 over almost the entire length of the outer peripheral surface of the coil end 14 a in the axial direction of the rotating shaft 12. Since they can be brought into contact with each other, the surface area required for heat exchange between the cooling oil 1 and the stator 14 can be made larger than before, and the cooling efficiency can be improved as compared with the conventional case.
  • a high cooling capacity can be expressed with a minimum structural change.
  • the rotating electrical machine and the cooling method of the rotating electrical machine according to the present invention have improved cooling efficiency than before and can exhibit a high cooling capacity with a minimum structural change. It can be used very effectively in the industry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
PCT/JP2010/052089 2009-02-13 2010-02-12 回転電機及び回転電機の冷却方法 Ceased WO2010093019A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009030669A JP2010187489A (ja) 2009-02-13 2009-02-13 回転電機
JP2009-030669 2009-02-13

Publications (1)

Publication Number Publication Date
WO2010093019A1 true WO2010093019A1 (ja) 2010-08-19

Family

ID=42561859

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/052089 Ceased WO2010093019A1 (ja) 2009-02-13 2010-02-12 回転電機及び回転電機の冷却方法

Country Status (2)

Country Link
JP (1) JP2010187489A (https=)
WO (1) WO2010093019A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150207387A1 (en) * 2014-01-23 2015-07-23 Denso Corporation Rotary electric machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5892091B2 (ja) * 2013-03-08 2016-03-23 株式会社デンソー マルチギャップ型回転電機
JP6852639B2 (ja) * 2017-10-12 2021-03-31 トヨタ自動車株式会社 ステータ

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005073351A (ja) * 2003-08-22 2005-03-17 Toyota Motor Corp 回転電機の冷却構造
JP2005229672A (ja) * 2004-02-10 2005-08-25 Toyota Motor Corp 回転電機
JP2005354821A (ja) * 2004-06-11 2005-12-22 Honda Motor Co Ltd モータ
JP2006033915A (ja) * 2004-07-12 2006-02-02 Nissan Motor Co Ltd 電動機の冷却装置
JP2006197772A (ja) * 2005-01-17 2006-07-27 Toyota Motor Corp 回転電機
JP2007020323A (ja) * 2005-07-08 2007-01-25 Nissan Motor Co Ltd 電動機固定子の冷却装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005253263A (ja) * 2004-03-08 2005-09-15 Toyota Motor Corp 電動機の冷却装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005073351A (ja) * 2003-08-22 2005-03-17 Toyota Motor Corp 回転電機の冷却構造
JP2005229672A (ja) * 2004-02-10 2005-08-25 Toyota Motor Corp 回転電機
JP2005354821A (ja) * 2004-06-11 2005-12-22 Honda Motor Co Ltd モータ
JP2006033915A (ja) * 2004-07-12 2006-02-02 Nissan Motor Co Ltd 電動機の冷却装置
JP2006197772A (ja) * 2005-01-17 2006-07-27 Toyota Motor Corp 回転電機
JP2007020323A (ja) * 2005-07-08 2007-01-25 Nissan Motor Co Ltd 電動機固定子の冷却装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150207387A1 (en) * 2014-01-23 2015-07-23 Denso Corporation Rotary electric machine

Also Published As

Publication number Publication date
JP2010187489A (ja) 2010-08-26

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