Method for reducing the pressure in a vehicle air conditioner when the compressor stops has a reservoir situated between the evaporator and expansion valve to collect excess refrigerant

摘要

The compressor (4), driven by the vehicle engine, drives liquid refrigerant (3) through a condenser (6) and thermostatic expansion valve (7) and the vapor through an evaporator (2). When the engine is stopped vapor pressure in the evaporator feeds back to a cooled, insulated reservoir (10) which collects oil, liquid (3f) and gaseous (3g) refrigerant from which vapor is drawn at restart.