Title:
オイルフリースクリュー圧縮機
Document Type and Number:
Japanese Patent JP4411753
Kind Code:
B2
Abstract:
An air compressor comprises a compressor main body, and a capacity adjusting apparatus connected to an intake side of the compressor main body for adjusting the intake air flow into the compressor main body. The capacity adjusting apparatus is provided in an intake pipe. The intake pipe is adjacent to a discharge pipe of the compressor. A communicating passage is formed in the adjacent portion so as to introduce the compressed air discharged from the discharge pipe into the intake pipe system. The intake pipe is provided with an opening port for limiting the intake air flow into the compressor main body. The capacity adjusting apparatus opens and closes the communicating passage and the opening by means of an intake port switch valve and a discharge ventilating port switch valve which are provided in an end portion of the capacity adjusting apparatus.
Inventors:
Seiji Tsuru
Kazuki Takahashi
Kazuki Takahashi
Application Number:
JP2000203049A
Publication Date:
February 10, 2010
Filing Date:
June 30, 2000
Export Citation:
Assignee:
Hitachi Plant Technology Co., Ltd.
International Classes:
F04C18/16; F04C28/26; F04B1/00; F04B49/00; F04B49/02; F04B49/06; F04B49/08; F04C28/00; F04C28/06; F04C28/08; F04C28/10; F04C28/24; F04C29/12
Domestic Patent References:
| JP57086582A | ||||
| JP56115590U | ||||
| JP8247075A | ||||
| JP63031280U |
Attorney, Agent or Firm:
Polaire Patent Business Corporation