JPS605252U

JPS605252U - Rotor of squirrel cage induction motor

Info

Publication number: JPS605252U
Application number: JP9736283U
Authority: JP
Inventors: 田村　樹男
Original assignee: 株式会社東芝
Priority date: 1983-06-23
Filing date: 1983-06-23
Publication date: 1985-01-16

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の回転子の一例を示す縦断面図、第２図お
よび第３図は夫々従来の回転子の他の例を示す縦断面図
および横断面図、第４図ないし第６図は夫々本考案の回
転子の一実施例を示すもので、第４図は縦断面図、第５
図および第６図は夫々ラジアルダクト部を示す横断面図
、第７図は他の実施例を示す横断面図である。１・・・回転子軸、２・・・回転子鉄心、３・・・ロー
タバー、４Ａ、’４Ｂ・・・エンドリング、５，５Ａ〜
５Ｃ・・・風孔、６・・・通風ファン、７・・・固定子
鉄心、８・・・フレーム、９・・・冷却風取入口、１０
・・・冷却風排出口、１１Ａ、ＩＩＢ・・・ラジアルダ
クト、１２・・・間隔リング、１３，１４．１５・・・
風仕切体。第３図第４図FIG. 1 is a longitudinal sectional view showing an example of a conventional rotor, FIGS. 2 and 3 are a longitudinal sectional view and a transverse sectional view showing other examples of the conventional rotor, respectively, and FIGS. 4 to 6 4 shows an embodiment of the rotor of the present invention, and FIG. 4 is a vertical sectional view, and FIG.
6 and 6 are cross-sectional views showing the radial duct portion, respectively, and FIG. 7 is a cross-sectional view showing another embodiment. 1... Rotor shaft, 2... Rotor core, 3... Rotor bar, 4A, '4B... End ring, 5, 5A~
5C... Air hole, 6... Ventilation fan, 7... Stator core, 8... Frame, 9... Cooling air intake, 10
... Cooling air outlet, 11A, IIB... Radial duct, 12... Spacing ring, 13, 14.15...
Wind partition body. Figure 3 Figure 4

Claims

[Scope of utility model registration request]

In a cage-shaped rotor in which a rotor bar is provided on an iron core attached to a rotor shaft, air holes for cooling air passing through the iron core in the axial direction are formed at a plurality of places spaced apart in the circumferential direction of the iron core, and Radial tacts that communicate with the air holes and exit to the outer circumferential surface of the core are formed at a plurality of locations spaced apart in the axial direction of the iron core, and the cooling air is allowed to flow through the inside of these radial tacts in the axial direction of the core. A wind partition body is provided to partition some of the air holes including the air holes from the radial duct, and the wind partition body is provided in the radial duct located on the windward side of the cooling air among the mutually adjacent radial tacts. A rotor of a squirrel-cage induction motor, in which the cooling air throughflow hole and the air hole for discharging the cooling air with a radial tact on the leeward side of the cooling air are partitioned from a radial duct.