Compressor with vapor injection system

摘要

A heat pump system (10) includes a first heat exchanger (22), a second heat exchanger (28) in fluid communication with the first heat exchanger (22), a scroll compressor (16) in fluid communication with each of the first (22) and second heat exchangers (28), and a flash tank (62) in fluid communication with each of the first and second heat exchangers (22,28) and the scroll compressor (16). The flash tank (62) includes an inlet (70) fluidly coupled to the first and second heat exchangers (22,28) and receives liquid refrigerant from the first and second heat exchangers (22,28). The flash tank (62) also includes a first outlet (74) fluidly coupled to the first and second heat exchangers (22,28) that delivers sub-cooled-liquid refrigerant to the second heat exchanger (28) and a second outlet (72) fluidly coupled to the scroll compressor (16) that delivers vaporized refrigerant to the scroll compressor (16) in a heating mode.