Reciprocating compressor with double headed pistons

Details Reciprocating compressor with double headed pistons Reciprocating compressor with double headed pistons

1995-07-03

1996-09-03

Freay, Charles

Pumps

Three or more cylinders arranged in parallel, radial, or...

417307, 92 71, F04B 4900

Patent

active

055518443

ABSTRACT:
A reciprocating compressor includes double headed pistons forming front and rear sets of compression chambers on either side thereof and a pair of tapered rotary valves arranged for introducing a coolant gas into the compression chambers. The valves are urged into contact with valve chambers by springs and a drive shaft is urged in one axial direction by a prestress mechanism. The valve urging force for one rotary valve is different from the valve urging force for the other rotary valve, so that the rotary valves operate at different times and over different distances and the movements of the rotary valves are controlled to move the drive shaft in the same axial direction as the direction of the prestress mechanism.

REFERENCES:
patent: 5366350 (1994-11-01), Fujii et al.
patent: 5375981 (1994-12-01), Fujii et al.
patent: 5380163 (1995-01-01), Fujii et al.

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