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JPS55160951A - Totally-enclosed external fan cooled rotary electric machine - Google Patents

Totally-enclosed external fan cooled rotary electric machine

Info

Publication number
JPS55160951A
JPS55160951A JP6673979A JP6673979A JPS55160951A JP S55160951 A JPS55160951 A JP S55160951A JP 6673979 A JP6673979 A JP 6673979A JP 6673979 A JP6673979 A JP 6673979A JP S55160951 A JPS55160951 A JP S55160951A
Authority
JP
Japan
Prior art keywords
fan
plate
blades
electric machine
rotary electric
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
JP6673979A
Other languages
Japanese (ja)
Inventor
Yoshihisa Sasaki
Jusaburo Shibayama
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6673979A priority Critical patent/JPS55160951A/en
Publication of JPS55160951A publication Critical patent/JPS55160951A/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
    • H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle

Landscapes

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

Abstract

PURPOSE:To obtain a small-sized, low-noise rotary electric machine with fan efficiency raised to increase air feed rate by providing outside a centrifugal fan satisfying specified requirements. CONSTITUTION:The main plate 9a of an external fan 9 is inclined conically toward a housing 15, a plurality of blades 9b are attached to the plate 9a and the tip thereof is set in parallel with an axis 1, a notch 9c is provided in the opposite direction to the inclination of the plate 9a on the machine body side 14 of the tip of the blades 9b, and the side face 9d of the blades 9b on the opposite side of the plate 9a for obtaining a centrifugal fan. The relation between the outer diameter phiD2 of the fan 9 and the diameter phiD1 of the discharge port of a fan cover is set to D1/D2 1.35-1.45. A bottom portion 10d and a cylindrical portion 10c are interconnected by a conical portion 10f having angle beta 30 deg.-45 deg. with the axis 1 at an outer-circumferential angular portion 10e with A/D2 1-1.15, of the bottom 10d of the cover when the diameter of the angular portion 10e is phiA. Thereby, a small-sized, low-noise rotary machine can be obtained with the efficiency of the fan raised to increase air feed rate without any increase in size.
JP6673979A 1979-05-31 1979-05-31 Totally-enclosed external fan cooled rotary electric machine Pending JPS55160951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6673979A JPS55160951A (en) 1979-05-31 1979-05-31 Totally-enclosed external fan cooled rotary electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6673979A JPS55160951A (en) 1979-05-31 1979-05-31 Totally-enclosed external fan cooled rotary electric machine

Publications (1)

Publication Number Publication Date
JPS55160951A true JPS55160951A (en) 1980-12-15

Family

ID=13324541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6673979A Pending JPS55160951A (en) 1979-05-31 1979-05-31 Totally-enclosed external fan cooled rotary electric machine

Country Status (1)

Country Link
JP (1) JPS55160951A (en)

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