JPS6317897U

JPS6317897U -

Info

Publication number: JPS6317897U
Application number: JP11061086U
Authority: JP
Priority date: 1986-07-21
Filing date: 1986-07-21
Publication date: 1988-02-05

Description

[Brief explanation of the drawing]

第１図は本考案に係る低真空コンプレツサの一
実施例を示す断面図、第２図は従来のコンプレツ
サを示す断面図である。２０……電動機、２１……回転軸、２２……回
転子、２３……固定子、２５……上部軸受、２６
……下部軸受、２７……インペラ、２９……潤滑
油室、３０……潤滑油通路、３４……ケーシング
、４２……真空用ガスケツト。 FIG. 1 is a sectional view showing an embodiment of a low vacuum compressor according to the present invention, and FIG. 2 is a sectional view showing a conventional compressor. 20...Electric motor, 21...Rotating shaft, 22...Rotor, 23...Stator, 25...Upper bearing, 26
... lower bearing, 27 ... impeller, 29 ... lubricating oil chamber, 30 ... lubricating oil passage, 34 ... casing, 42 ... vacuum gasket.

Claims

[Scope of utility model registration request]

A rotating shaft having a lubricating oil passage formed hollow along the axial direction and having a closed upper end and an open lower end, the upper and lower parts of which are supported by bearings and arranged vertically, and this rotating shaft. an impeller provided in the upper part of the rotating shaft, a driving means provided in the center of the rotating shaft for rotating the rotating shaft, a lubricating oil chamber provided so as to immerse the lower part of the rotating shaft, and these rotating shafts. , a casing divided into a plurality of parts that surrounds and seals the impeller, the driving means, and the lubricating oil chamber; a gasket attached to the joint of the casing; and a casing that extends from the lubricating oil passage of the rotating shaft and opens at the upper and lower bearing positions. A low vacuum compressor comprising a lubricating oil supply port and a return passage for returning lubricating oil supplied from the lubricating oil supply port to the lubricating oil chamber.