JPH0195584U

JPH0195584U -

Info

Publication number: JPH0195584U
Application number: JP19088287U
Authority: JP
Priority date: 1987-12-16
Filing date: 1987-12-16
Publication date: 1989-06-23

Description

[Brief explanation of the drawing]

第１図は本実施例によるスクロール圧縮機の縦
断面図、第２図はスラスト軸受の平面図、第３図
は第２図の背面図、第４図はスラスト軸受の他の
実施例を示す平面図である。１……ケーシング、２……固定スクロール、２
Ａ……鏡板、２Ｂ……ラツプ部、３……駆動軸、
３Ｂ……クランク軸、５……旋回スクロール、５
Ａ……鏡板、５Ｂ……ラツプ部、７……圧縮室、
８……吸込ポート、９……吐出ポート、１１，３
１……スラスト軸受、１２……全周溝、１３，３
３……空気供給穴、１４，３４……通気溝、１５
……給気通路、１６……吐出管、１７……給気管
、３２……半周溝。 Fig. 1 is a longitudinal sectional view of the scroll compressor according to this embodiment, Fig. 2 is a plan view of the thrust bearing, Fig. 3 is a rear view of Fig. 2, and Fig. 4 shows another embodiment of the thrust bearing. FIG. 1...Casing, 2...Fixed scroll, 2
A... End plate, 2B... Wrap part, 3... Drive shaft,
3B...Crankshaft, 5...Orbiting scroll, 5
A...End plate, 5B...Lap part, 7...Compression chamber,
8...Suction port, 9...Discharge port, 11,3
1... Thrust bearing, 12... Full circumference groove, 13, 3
3... Air supply hole, 14, 34... Ventilation groove, 15
...Air supply passage, 16...Discharge pipe, 17...Air supply pipe, 32...Semi-circumferential groove.

Claims

[Scope of utility model registration request]

The casing is made of a cylindrical body and has a bearing support part formed in the middle in the axial direction, is fixed to one side of the casing, has a spiral wrap part erected on the end plate, and has a discharge port on the axial center side. a fixed scroll rotatably supported by the casing, a drive shaft having a crankshaft at its tip end; interposed between an orbiting scroll in which a spiral wrap portion forming a compression chamber is erected, and a rear side of the end plate of the orbiting scroll and a bearing support portion of the casing;
In an oil-free scroll compressor comprising a thrust bearing fixed to the bearing support side, the thrust bearing is provided with a circumferential groove on a surface in sliding contact with the end plate of the orbiting scroll, and the circumferential groove is connected to the discharge port side. 1. An oil-free scroll compressor, characterized in that the scroll compressor is connected to one another and is configured to supply a portion of compressed gas to the circumferential groove.