Pumps – Three or more cylinders arranged in parallel – radial – or... – Condition responsive fluid control
Patent
1995-05-31
1997-03-18
Thorpe, Timothy
Pumps
Three or more cylinders arranged in parallel, radial, or...
Condition responsive fluid control
417298, 417507, F04B 700
Patent
active
056116756
ABSTRACT:
A spool 9 is connected to the rotating shaft 1 so that the spool 9 is slidable with respect to the shaft 1, while the rotating movement of the shaft 1 is transmitted to the spool 9. The spool 9 is formed with a first recess 9-3 of a reduced circumferential extension for obtaining a reduced compression capacity and a second recess 9-4 of an increased circumferential extension for obtaining a full capacity of the compressor. An intake pressure is always opened to a side of the spool, while an intermediate chamber is formed on the other side of the spool. A spring 10 is arranged for causing the spool 9 to be moved toward the intermediate pressure chamber. At the instant the compressor is brought into operation, introduction of the intake gas occurs via the first recess 9-4, thereby obtaining a compression capacity of 3 to 5% compared to the full capacity of the compressor.
REFERENCES:
patent: 2881973 (1959-04-01), Ricardo
patent: 2940396 (1960-06-01), Misulis
patent: 3319568 (1987-05-01), Repko et al.
patent: 3648673 (1972-03-01), Knape
Inagaki Mitsuo
Matsuda Mikio
Sakai Takeshi
Uchida Kazuhide
McAndrews, Jr. Roland G.
Nippon Soken Inc.
Thorpe Timothy
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