Reciprocating Compressor With Vapor Injection System

摘要

A compressor may include a compression cylinder, a compression piston, a crankshaft, an injection bore, a position sensor, and a valve assembly. The compression piston is disposed within the compression cylinder and is operable to compress a vapor disposed within the compression cylinder from a suction pressure to a discharge pressure. The crankshaft is operable to cycle the compression piston within the compression cylinder. The injection bore may be in fluid communication with the compression cylinder and may be operable to selectively communicate intermediate-pressure vapor at a pressure between the suction pressure and said discharge pressure to the compression cylinder. The position sensor may measure a rotational position of the crankshaft. The valve assembly may be associated with the injection bore. The valve assembly may be operable to control passage of fluid from the injection bore into the compression cylinder in response to data provided by the position sensor.

主权项

1. A compressor comprising:
a compression cylinder; a compression piston disposed within said compression cylinder and operable to compress a vapor disposed within said compression cylinder from a suction pressure to a discharge pressure; a crankshaft operable to cycle said compression piston within said compression cylinder; an injection bore in fluid communication with said compression cylinder and operable to selectively communicate intermediate-pressure vapor at a pressure between said suction pressure and said discharge pressure to said compression cylinder; a position sensor measuring a rotational position of said crankshaft; and a valve assembly associated with said injection bore, said valve assembly operable to control passage of fluid from said injection bore into said compression cylinder in response to data provided by said position sensor.