VAPOR COMPRESSION SYSTEM

摘要

A vapor compression system having an evaporator with a receiver for receiving liquid refrigerant and lubricant from the expansion device. At least one flow path with at least one valve receives liquid refrigerant entrained with lubricant from the receiver, where the at least one valve controls the flow of liquid. A collection vessel having a heating element receives the liquid refrigerant entrained with lubricant from the flow path. An exit flow path having a valve controlling the flow of liquid refrigerant entrained with lubricant. A controller controls the valves and the heating element. When the receiver has a predetermined amount of liquid refrigerant entrained with lubricant, the controller controls valves and the heating element provides heat to the liquid refrigerant entrained with lubricant and the liquid refrigerant becomes a gas refrigerant, and wherein the lubricant exits the vessel via a drain pipe to the compressor.