JPS63130686U

JPS63130686U -

Info

Publication number: JPS63130686U
Application number: JP2322487U
Authority: JP
Priority date: 1987-02-18
Filing date: 1987-02-18
Publication date: 1988-08-26

Description

[Brief explanation of the drawing]

第１図は本考案に係る油冷式スクリユ圧縮機の
ブロツク図、第２図、第３図は従来の油冷式スク
リユ圧縮機のブロツク図である。２……本体（スクリユ圧縮機本体）、３……吐
出流路、４……温度調節器、５……油回収器、６
……油クーラ、８……油ポンプ、９……三方切換
弁、１１……油溜め部分、１２……第１油供給流
路、１３……第２油供給流路、１４……第３油供
給流路。 FIG. 1 is a block diagram of an oil-cooled screw compressor according to the present invention, and FIGS. 2 and 3 are block diagrams of conventional oil-cooled screw compressors. 2...Main body (screw compressor main body), 3...Discharge flow path, 4...Temperature controller, 5...Oil recovery device, 6
... Oil cooler, 8 ... Oil pump, 9 ... Three-way switching valve, 11 ... Oil reservoir portion, 12 ... First oil supply flow path, 13 ... Second oil supply flow path, 14 ... Third Oil supply channel.

Claims

[Scope of utility model registration request]

An oil recovery device is provided in the main body of the oil-cooled screw compressor and in the discharge flow path following the main body, and the oil recovered and separated from the discharged gas by this oil recovery device is sent to the compression chamber of the main body.
An oil-cooled screw compressor that supplies oil to the screw rotor shaft bearing, shaft seal, etc., then collects it again and uses it for circulation, is equipped with an oil cooler and an oil pump.
A first oil supply passage leading from the oil reservoir of the oil recovery device to lubrication parts such as the bearing portion and the shaft seal portion, and a three-way switching valve branching from the first oil supply passage at the outlet side of the oil cooler. a second oil supply passage leading to the compression chamber in the main body through the oil cooler, and a third oil supply passage branching from the first oil supply passage on the inlet side of the oil cooler and reaching the three-way switching valve. , detects the discharge temperature of the main body, and if this temperature is higher than the set value, the second oil cooler is
Through the oil supply flow path, in other cases, without passing through the oil cooler, the third oil supply flow path merges with the second oil supply flow path at a three-way switching valve, and through this flow path, the compression chamber is An oil-cooled screw compressor, characterized in that it is provided with a temperature controller that switches the flow path in the three-way switching valve so as to supply oil to the oil.