JPS56141743A - Cooling device for variable speed motor - Google Patents

Cooling device for variable speed motor

Info

Publication number
JPS56141743A
JPS56141743A JP4461080A JP4461080A JPS56141743A JP S56141743 A JPS56141743 A JP S56141743A JP 4461080 A JP4461080 A JP 4461080A JP 4461080 A JP4461080 A JP 4461080A JP S56141743 A JPS56141743 A JP S56141743A
Authority
JP
Japan
Prior art keywords
clutch
high speed
low speed
rotated
cooling fan
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.)
Pending
Application number
JP4461080A
Other languages
Japanese (ja)
Inventor
Tomohiro Okawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4461080A priority Critical patent/JPS56141743A/en
Publication of JPS56141743A publication Critical patent/JPS56141743A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

PURPOSE:To increase the cooling effect when the subject motor is operated at a low speed as well as to hole down the rotatioae loss, generated at a high speed operation, to the minimum by a method wherein a cooling fan is attached to a rotary shaft through the clutch which is mounted in such manner that it is coupled when the rotating shaft is rotated at a low speed and is released when rotated at a high speed. CONSTITUTION:The cooling fan 9 is mounted on the rotary shaft 5 through the intermediary of a bearing 8 and then the clutch 10 is placed in such manner that it is coupled when the rotary shaft 5 is rotated at a low speed and is released when rotated at a high speed. In such a clutch as clutch 10, the roller clutch, which will be coupled when the rotary shaft 5 rotates clockwise and is released when the shaft rotates counterclockwise, can be utilized. Accordingly, a current is applied on a stator winding 2 in such manner that the rotor rotates counterclockwise when a low speed revolution is desired and rotates clockwise when a high speed revolution is desired, thereby enabling to operate the cooling fan 9 simultaneously when rotates at a low speed and the cooling fan 9 does not rotate when the rotor rotates at a high speed.
JP4461080A 1980-04-07 1980-04-07 Cooling device for variable speed motor Pending JPS56141743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4461080A JPS56141743A (en) 1980-04-07 1980-04-07 Cooling device for variable speed motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4461080A JPS56141743A (en) 1980-04-07 1980-04-07 Cooling device for variable speed motor

Publications (1)

Publication Number Publication Date
JPS56141743A true JPS56141743A (en) 1981-11-05

Family

ID=12696206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4461080A Pending JPS56141743A (en) 1980-04-07 1980-04-07 Cooling device for variable speed motor

Country Status (1)

Country Link
JP (1) JPS56141743A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4540381A (en) * 1984-08-23 1985-09-10 General Motors Corporation Selectively operable rotary drive means
EP0739079A1 (en) * 1995-04-21 1996-10-23 Siemens Aktiengesellschaft Auto-ventilated electrical machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4540381A (en) * 1984-08-23 1985-09-10 General Motors Corporation Selectively operable rotary drive means
EP0739079A1 (en) * 1995-04-21 1996-10-23 Siemens Aktiengesellschaft Auto-ventilated electrical machine

Similar Documents

Publication Publication Date Title
IT1176982B (en) Aircraft propeller drive and revolutions control system
JPS56141743A (en) Cooling device for variable speed motor
JPS5556445A (en) Ventilating fan for rotary machine
JPS5312006A (en) Rotary machine
JPS53107603A (en) Rotary machine
JPS5780539A (en) Chassis dynamometer
JPS57126263A (en) Wind power generating apparatus
JPS5399408A (en) Low speed motor
JPS52154016A (en) Motor driven device
JPS56129864A (en) Motor rotation detector for dehydration-combined washing
JPS5743535A (en) Low noise electric motor
GB1232140A (en)
FR2297336A1 (en) Cooling tower fan unit - has faster contrarotating fan above and coaxial to larger main fan
JPS52143425A (en) Revolving electric machine
JPS51136116A (en) Intermittent rotary machine
SU133089A1 (en) Electric drive
JPS5355718A (en) Rotary machine
JPS52134903A (en) Method of controlling high-speed rotation of engine-driven unit
JPS5292310A (en) Synchroneous motor of super low speed
JPS5762794A (en) Speed control device for ac motor
JPS53103502A (en) Electric rotary machine
JPS56141786A (en) Deri-motor generator
FR2341219A1 (en) Single bearing brushless alternator - has integral cooling fan blades and rotor cylinder of aluminium alloy
JPS5289233A (en) Air ventilator
JPS5518887A (en) Cooler for rotary electrical apparatus