JPS61189748U

JPS61189748U -

Info

Publication number: JPS61189748U
Application number: JP7249085U
Authority: JP
Priority date: 1985-05-16
Filing date: 1985-05-16
Publication date: 1986-11-26

Description

[Brief explanation of the drawing]

第１図はこの考案の実施例の要部縦断面図、第
２図および第３図はそれぞれぞれこの考案の他の
実施例の要部縦断面図、第４図は従来例の要部縦
断面図、第５図は第４図の―線に沿う縦断面
図である。２……フレーム、３……軸受、１１……回転子
、１２，３２……内扇、１３……固定子巻線、１
４……回転軸、１５……ブラケツト、１６……取
付板、１７……フランジ、１８……筒状体、１９
……仕切板、２０ａ，２０ｂ……通気口、２２…
…送風羽根、２３……主板、２３……主板、２７
……エアガイド、３３……環状板、３４……ボス
、ｇ_１……細隙。 Fig. 1 is a vertical cross-sectional view of a main part of an embodiment of this invention, Figs. 2 and 3 are longitudinal cross-sectional views of main parts of other embodiments of this invention, and Fig. 4 is a main part of a conventional example. A longitudinal sectional view, FIG. 5 is a longitudinal sectional view taken along the line --- in FIG. 4. 2... Frame, 3... Bearing, 11... Rotor, 12, 32... Inner fan, 13... Stator winding, 1
4... Rotating shaft, 15... Bracket, 16... Mounting plate, 17... Flange, 18... Cylindrical body, 19
...Partition plate, 20a, 20b...Vent hole, 22...
...Blower blade, 23... Main plate, 23... Main plate, 27
... Air guide, 33 ... Annular plate, 34 ... Boss, g ₁ ... Slit.

Claims

[Claims for Utility Model Registration] (1) An annular mounting plate that surrounds the end face of the stator winding on both end faces of the cylindrical body and is attached to the end face of the cylindrical frame, and a rotating shaft is connected to the end face of the cylindrical frame via a bearing in the center. In addition to providing a supporting disk-shaped flange, an annular partition plate having an inner diameter approximately the same as that of the mounting plate is provided inside the cylindrical body at an intermediate position between the mounting plate and the flange, and between the mounting plate and the partition plate of the cylindrical body and Properly provide ventilation holes near each flange to form a bearing bracket, and place a gap between the inner periphery of the mounting plate and the radial direction between the bearing of the rotating shaft and the rotor on the bearing side of the opposing main plate. An inner fan having a centrifugal blower blade that can be rotated in forward and reverse directions facing the vent on the mounting plate side is fixed, and the frame and the vent on the mounting plate side are surrounded by a cylindrical air guide,
A flange-equipped external ventilation system, characterized in that, by the action of the internal fan, the cooling air sucked in from the flange-side ventilation port and discharged from the mounting plate-side ventilation port is combined to ventilate the outer circumferential surface of the frame in the axial direction. Rotating electric machine. (2) In the flanged externally ventilated electric rotating machine described in claim 1 of the utility model registration claim, the cylindrical boss of the inner fan is extended toward the bearing side, and an annular plate that is symmetrical to the main plate is inverted at the tip of the cylindrical boss. A flange-equipped external ventilation type rotating electrical machine characterized by being formed at an axial position where a part of the cooling air passing through the outer circumferential surface of the frame can be taken in through the mounting plate side vent and discharged from the flange side vent. .