JPS6157140U

JPS6157140U -

Info

Publication number: JPS6157140U
Application number: JP14296284U
Authority: JP
Priority date: 1984-09-21
Filing date: 1984-09-21
Publication date: 1986-04-17

Description

[Brief explanation of the drawing]

第１図はこの考案の実施例を示す縦断面図であ
る。図中、１０はタービンハウジング、１１はター
ビン翼車、１１ａはタービン翼車の接合部、１２
はコンプレツサハウジング、１３はコンプレツサ
翼車、１６は軸受ハウジング、２０は回転軸、２
４は動圧形気体軸受、２６は反発形磁気軸受、３
５は回転軸の空洞、３６は回転軸の通気穴、３７
，３８は軸受ハウジングの通気穴である。 FIG. 1 is a longitudinal sectional view showing an embodiment of this invention. In the figure, 10 is a turbine housing, 11 is a turbine wheel, 11a is a joint part of the turbine wheel, 12
1 is a compressor housing, 13 is a compressor impeller, 16 is a bearing housing, 20 is a rotating shaft, 2
4 is a dynamic pressure type gas bearing, 26 is a repulsion type magnetic bearing, 3
5 is a cavity of the rotating shaft, 36 is a ventilation hole of the rotating shaft, 37
, 38 are ventilation holes in the bearing housing.

Claims

[Scope of utility model registration request]

A turbine wheel installed in a turbine housing and a compressor wheel installed in a compressor housing are fixed to both ends of a common rotating shaft,
A hydrodynamic gas bearing is installed as a radial bearing on the turbine wheel side in the bearing housing between the turbine housing and the compressor housing, and a hydrodynamic gas bearing or repulsion magnetic bearing is installed as a thrust bearing on the compressor wheel side. In a supercharger in which the rotating shaft is supported in the radial direction and the axial direction, the turbine wheel side of the rotating shaft is made into a hollow body, and the rotating shaft is adjacent to the joint part with the rotating shaft of the turbine wheel. 1. A heat dissipation device for a supercharger, characterized in that a cavity is provided, and the cavity is communicated with outside air through a ventilation hole provided in a rotating shaft and a bearing housing.