JPS5720142A - Cooling fan for rotary electric machine - Google Patents

Cooling fan for rotary electric machine

Info

Publication number
JPS5720142A
JPS5720142A JP9275980A JP9275980A JPS5720142A JP S5720142 A JPS5720142 A JP S5720142A JP 9275980 A JP9275980 A JP 9275980A JP 9275980 A JP9275980 A JP 9275980A JP S5720142 A JPS5720142 A JP S5720142A
Authority
JP
Japan
Prior art keywords
cooling fan
electric machine
rotary electric
fan
cracks
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
JP9275980A
Other languages
Japanese (ja)
Inventor
Yoshiteru Ogawa
Hideaki Kobayashi
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 JP9275980A priority Critical patent/JPS5720142A/en
Publication of JPS5720142A publication Critical patent/JPS5720142A/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

Landscapes

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

Abstract

PURPOSE:To prevent the production of cracks with a simple construction by providing a convex groove on the whole circumference of the fan base of a cooling fan. CONSTITUTION:A fan base 2 is provided with a convex groove 5, which is concentric with the revolving center, around the whole circumference. This increases rigidity of the fan base 2, eliminates the deformation in circular direction, strengthens assembly of a cooling fan, shift the resonance point of a cooling fan which is influenced by external vibration, and can prevent the production of cracks in a blade mounting part.
JP9275980A 1980-07-09 1980-07-09 Cooling fan for rotary electric machine Pending JPS5720142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9275980A JPS5720142A (en) 1980-07-09 1980-07-09 Cooling fan for rotary electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9275980A JPS5720142A (en) 1980-07-09 1980-07-09 Cooling fan for rotary electric machine

Publications (1)

Publication Number Publication Date
JPS5720142A true JPS5720142A (en) 1982-02-02

Family

ID=14063349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9275980A Pending JPS5720142A (en) 1980-07-09 1980-07-09 Cooling fan for rotary electric machine

Country Status (1)

Country Link
JP (1) JPS5720142A (en)

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