AIR CONDITIONING SYSTEM FOR VEHICLE MAINLY CONCERNED WITH PREVENTING DAMAGE OF COMPRESSOR DUE TO SHORTAGE OF OIL SUPPLIED TO THE COMPRESSOR IN REOPERATING AIR CONDITIONING SYSTEM

摘要

PURPOSE: An air conditioning system for a vehicle is provided to prevent damage and break of a compressor due to shortage of oil to be supplied to the compressor in reoperating an air conditioning system for a vehicle. CONSTITUTION: A first outflow pipe(42) is connected with an outlet of a first evaporator. A second outflow pipe(62) is connected with an outlet of a second evaporator. An inlet pipe(11) connected with an inlet of a compressor is communicated with the outflow pipes at a combining point(A). The first outflow pipe and the inlet pipe are upward extended from the combining point. The second outflow pipe is upward extended from the combining point and then downward extended. Gaseous refrigerant and liquid oil are flowed from the first outflow pipe and the second outflow pipe to the inlet pipe. The liquid oil moves in association with inner walls of the pipes. If operation of an air conditioning system for a vehicle is stopped, the refrigerant stops flowing and the oil flowing in the pipes is collected at the combining point.