System for filling refrigerant tank for filling arrangement of motor vehicle with flammable refrigerant, has vacuum unit for evacuating refrigerant tank, where evacuation line of vacuum unit is connected to filling connection

摘要

The system (18) has a vacuum unit (22) for evacuating a refrigerant tank, where an evacuation line (24) of the vacuum unit is connected to a filling connection (20) of a filling system. A pressure sensing element (38) is arranged downstream of a blocking device (36). A flow through of a filling line (34) is suppressed by the blocking device depending upon a pressure detected by the pressure sensing element in the filling line. Independent claims are included for the following: (1) a filling arrangement with a supply unit; and (2) a method for filling a refrigerant tank of a motor vehicle.