Patent ID: 6092733
Filing Date: 2000-07-25
Classification: B21C,F25B

Abstract:
An expansion valve for use with a refrigerant adapted to flow at least through an evaporator and a compressor, and having a heat sensing portion and a heat sensing shaft, the heat sensing portion having a heat sensing gas and the temperature of the refrigerant transmitting to the heat sensing portion through the heat sensing shaft, wherein the valve has a first path through which the refrigerant from the evaporator to the compressor communicates and a second path through which the refrigerant from the condenser to the evaporator communicates, wherein the expansion valve controls the flow rate of the refrigerant flowing through the second path based on the change of pressure of the heat sensing gas inside the heat sensing portion, the expansion valve comprising:a substantially prismatic-shaped valve body having the first and second paths,wherein at least the first path is formed by a hollow extrusion, and wherein the valve body comprises an aluminum.