Patent ID: 7299654

Claim:
Pressure-reducing device designed to be installed in an air conditioning circuit operating with a cooling fluid (FR), and including a housing suitable for being traversed by the cooling fluid under the control of a needle valve ( 134 ), said device separated into two compartments, a first compartment 125 , and a second compartment 126 , said first compartment 125 separated into an upper part 1250 and lower part 1251 by a wall 25 provided with at least one opening, said pressure-reducing device furthermore including a bulb ( 200 ) filled with a control fluid exerting a pressure on a membrane ( 33 ) as a function of ambient conditions, the membrane being suited to act on the needle valve ( 134 ) as a function of the control pressure, wherein the bulb is placed in the path of the cooling fluid in the pressure-reducing device.