APPARATUS AND METHOD FOR RECOVERING AND REGENERATING A REFRIGERANT FROM AN A/C PLANT

• Main Author: SANHAJI, RAHHALI
• Format: Patent
• Language: English; French; German
• Published: 03.06.2015
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

An apparatus (230) for recovering refrigerant from an air conditioning system (200), said apparatus (230) comprising a collector (235), a feed duct (101), an evaporator (232), a compressor (233), said compressor (233) being in hydraulic connection with said feed duct (101) through said evaporator (232); a condenser (236) in hydraulic connection with said compressor (233), said condenser (236) arranged to condense the refrigerant exiting from said compressor (233); a storage container (60) in hydraulic connection with said condenser (236); a first charging duct (103a) having a first valve (243a); a measuring means configured to measure the amount of refrigerant contained in said storage container (60); a second charging duct (103b) located parallel to said first charging duct (103a) and downstream of said storage container (60), said second charging duct (103b) comprising a second valve (243b); a means configured for switching said first valve (243a) in said closed position when said measuring means measures a predetermined minimum threshold value of said refrigerant in liquid phase, and switching said second valve (243b) in said open position, after said measuring means measures a predetermined minimum threshold value of said refrigerant in liquid phase, allowing a small amount of refrigerant in gaseous phase to apply the pressure necessary to the introduction in said air conditioning system (200) of a refrigerant said liquid phase remained in the connection ducts between the recovery and regeneration apparatus (230) and said air conditioning system (200).