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Title:
SCREW COMPRESSOR
Document Type and Number:
Japanese Patent JP2003042081
Kind Code:
A
Abstract:

To provide a screw compressor with a small-sized simple structure capable of reducing quantity of oil flowing out of the compressor.

The screw compressor is provided with a main casing 1 including a male and a female rotor 6, a discharging casing 3 including a discharging passage 15 of compressed gas discharged from the rotors, an oil reservoir 19 collecting oil separated from compressed gas. A cylindrical oil separating space part 4 communicating to the discharging passage 15 is formed on the discharging casing and the discharging passage 15 is connected to a tangential direction of the oil separating space part 4. A discharging opening 14 is provided to communicate with the oil separating space part 4 and a cylindrical member 5 is provided coaxially to the oil separating space part 4. The oil separation space part 4 and the oil reservoir 19 are connected with a communication passage of smaller section area than section area of the oil separating space part 4.


Inventors:
OSUMIMOTO HIROMOTO
NOZAWA SHIGEKAZU
URASHIN MASAYUKI
HIDA TAKESHI
KAMETANI HIROCHIKA
WATANABE ATSUSHI
Application Number:
JP2001228845A
Publication Date:
February 13, 2003
Filing Date:
July 30, 2001
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
F04B39/04; F04C11/00; F04C18/08; F04C18/16; F04C29/02; F04C29/12; (IPC1-7): F04C18/16; F04B39/04; F04C29/00; F04C29/02
Domestic Patent References:
JPS57127883U1982-08-09
JPS5663956U1981-05-29
JPH1162869A1999-03-05
JP2000080983A2000-03-21
JPS4935073U1974-03-28
JPH05296611A1993-11-09
Attorney, Agent or Firm:
Sakuta Yasuo



 
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