Air conditioning system for motor-vehicles

Air conditioning system for motor-vehicles, comprising a circuit for a fluid, said circuit including:

• a compressor,
• a condenser for receiving a fluid coming out of the compressor,
• an expansion valve for receiving the fluid coming out of the condenser,
• an evaporator for receiving the fluid expanded by said expansion valve, through an upstream conduit upstream of said evaporator, and for directing the fluid to said compressor, through a downstream conduit downstream of said evaporator,
• wherein said expansion valve forms part of a thermally controlled expansion valve unit, wherein the expansion valve is controlled by a temperature sensor which detects a temperature of the fluid in the conduit downstream of the evaporator,
• an intermediate heat exchanger for providing a heat exchange between said upstream conduit and said downstream conduit,
• wherein said expansion valve unit is arranged in such a way that said temperature sensor detects the temperature of the fluid along the downstream conduit, at a position along said downstream conduit which is located downstream with respect to said intermediate heat exchanger,
• wherein said expansion valve includes:
• a housing,
• a first path including said expansion valve defined within said housing and interposed along said upstream conduit,
• a second path, to which said temperature sensor is associated, said second path being defined within said housing and being interposed along said downstream conduit, along a length of said downstream conduit which is located downstream with respect to said intermediate heat exchanger,
• a second connect flange between said expansion valve unit and said evaporator, said connecting flange including a body through which a first passage, a second passage and a third passage are defined, wherein:
• said first passage interposed along said upstream conduit, along a length between the expansion valve and the evaporator,
• said second passage interposed along said downstream conduit of the evaporator, along a length between said second path of the expansion valve unit and said compressor, and
• said third passage interposed along said downstream conduit of said evaporator, along a length between the evaporator and said intermediate heat exchanger, and
• said thermally controlled expansion valve unit and said connecting flange FL integrated with each other within a single unit having a single housing.