JPS63156494U

JPS63156494U -

Info

Publication number: JPS63156494U
Application number: JP4966187U
Authority: JP
Priority date: 1987-03-31
Filing date: 1987-03-31
Publication date: 1988-10-13

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例に係る油冷式スク
リユ圧縮機のガス、潤滑油系統図、第２図は本考
案の第２実施例に係る油冷式スクリユ圧縮機の正
面図、第３図は第２図の―線断面図、第４図
は第２図の―線断面図、第５図はロータ支持
部の拡大断面図、第６図は自動放気弁の断面図、
第７図は従来の油冷式スクリユ圧縮機のガス、潤
滑油系統図である。１……本体（スクリユ圧縮機本体）、２……温
度調節計、３……油回収器、４……吐出流路、５
……油溜め部分、６……三方切換弁、７……逆止
弁、８……油クーラ、９……流路、１０……バイ
パス流路、１１……潤滑油供給流路。 FIG. 1 is a gas and lubricating oil system diagram of an oil-cooled screw compressor according to a first embodiment of the present invention, and FIG. 2 is a front view of an oil-cooled screw compressor according to a second embodiment of the present invention. FIG. 3 is a sectional view taken along the line - - of FIG. 2, FIG. 4 is a sectional view taken along the line - - of FIG. 2, FIG. 5 is an enlarged sectional view of the rotor support, and FIG.
FIG. 7 is a gas and lubricating oil system diagram of a conventional oil-cooled screw compressor. 1...Main body (screw compressor main body), 2...Temperature controller, 3...Oil collector, 4...Discharge channel, 5
...Oil reservoir portion, 6... Three-way switching valve, 7... Check valve, 8... Oil cooler, 9... Channel, 10... Bypass channel, 11... Lubricating oil supply channel.

Claims

[Scope of utility model registration request]

A compressor main body, a discharge flow path that is connected to the discharge side and is equipped with a temperature controller and an oil recovery device, and a lubricating oil supply inside the main body from the oil sump of the oil recovery device through at least a three-way switching valve and an oil cooler. flow path leading to the point,
and a lubricating oil supply flow path consisting of a bypass flow path leading directly from the three-way switching valve to the outlet side of the oil cooler, and when the temperature detected by the temperature controller is below a predetermined value, the oil cooler side In an oil-cooled compressor in which a three-way switching valve is operated to open the bypass flow path and open the bypass flow path in other cases, a check valve is provided between the oil recovery device and the three-way switching valve. An oil-cooled compressor characterized by being equipped with.