Compressor Protection Against Liquid Slug

A slug reduction system for use in heat pump systems, the slug reduction system comprising:

• a slug reduction and charge compensator device, comprising:
• a housing having a cavity and a liquid line port providing a refrigerant pathway into and out of the cavity;
• and
• a flash tube extending through the cavity and providing a passageway through the cavity for a suction line refrigerant to flow through the flash tube;
• and
• a valve assembly configured to control whether the cavity is fluidly coupled to a hot gas refrigerant pipe through an inlet port of the housing, wherein the hot gas refrigerant pipe is designed to carry a hot gas refrigerant from a compressor.

A heat pump system, comprising:

• a compressor;
• a slug reduction and charge compensator device comprising:
• a housing having a cavity and a liquid line port providing a refrigerant pathway into and out of the cavity;
• and
• a flash tube extending through the cavity, wherein the flash tube provides a passageway through the cavity for a suction line refrigerant to flow through the flash tube;
• and
• a valve assembly configured to control whether the cavity is fluidly coupled to a discharge line outlet of a compressor through an inlet port of the housing to receive a hot gas refrigerant from the compressor.