VARIABLE CAPACITY RECIPROCATING COMPRESSOR

摘要

A reciprocating compressor may include a shell, a first cylinder, a plate, a second cylinder, and a piston. The first cylinder may be disposed within the shell and may include a first valve. The plate may be fixed relative to the first cylinder and may include a second valve. The second cylinder may be axially aligned with the first cylinder and may be moveable relative to the first cylinder between first and second positions. The piston may be disposed within the second cylinder and may include a third valve. The piston may reciprocate relative to the first and second cylinders. The piston and the plate may define a first compression chamber therebetween. The piston and the first cylinder may define a second compression chamber therebetween. A fluid-injection passage extending through the first cylinder selectively provides a working fluid from a source to the second compression chamber.

主权项

1. A reciprocating compressor comprising:
a shell; a first cylinder disposed within said shell and including a first valve; a plate fixed relative to said first cylinder and including a second valve; a second cylinder axially aligned with said first cylinder and moveable relative to said first cylinder between first and second positions; and a piston disposed within said second cylinder and including a third valve, said piston reciprocating relative to said first and second cylinders, said piston and said plate defining a first compression chamber therebetween, said piston and said first cylinder defining a second compression chamber therebetween; a fluid-injection passage extends through said first cylinder and provides a working fluid to said second compression chamber; a fluid-injection valve in said fluid-injection passage is moveable between an open position allowing fluid to be injected into said second compression chamber through said fluid-injection passage and a closed position restricting fluid communication between said second compression chamber and said fluid-injection passage.