Patent ID: 6260372
Filing Date: 2001-07-17
Classification: F25B

Abstract:
A refrigerant recovery system and apparatus to connect with a refrigeration machine to extract liquid and gaseous refrigerant therefrom and to clean, purify and dry the refrigerant for present reuse; said apparatus includes an elongate recovery line with an inlet end to connect with a liquid refrigerant conducting part of a related refrigeration machine and an outlet end connected with an inlet of a particulate matter filter and deacidifier device, a flow line with an inlet end connected with an outlet of the filter and deacidifier device, a liquid-vapor refrigerant flow control device to selectively receive and meter the flow of liquid refrigerant through it for expansion to a gaseous state and to receive and freely conduct gaseous refrigerant through it, said refrigerant control device has an inlet connected with an outlet of the flow line and an outlet connected with an inlet end of a conducting line, an oil separator device with a refrigerant inlet connected with an outlet end of the vapor conducting line, a first transfer line with an inlet end connected with an outlet of the separator device and an outlet connected with an inlet of a refrigerant filter-dryer device, an elongate conductor line with an inlet end connected with an outlet of the filter dryer device, a recovery pump with an inlet connected with an outlet end of the conductor line, a delivery line with an inlet end and connected with the pump and an outlet end connected with a refrigerant supply tank.