Patent ID: 6318638
Filing Date: 2001-11-20
Classification: G05D

Abstract:
A hot and cold water mixing device comprising:a cylindrical valve body having a cold water valve seat and a hot water valve seat;a valve element which is slidable in an axial direction of said valve body and which can be seated on said cold water valve seat and said hot water valve seat;a temperature-sensitive spring for biasing said valve element in a direction toward said hot water valve seat;a bias spring for biasing said valve element in a direction toward said cold water valve seat; anda temperature setting member for moving said bias spring in the axial direction of said valve body,wherein said hot and cold water mixing device further comprises biasing force changing means for changing a biasing force of said bias spring,a biasing force when said valve element is positioned in a range for discharging medium-temperature water mixture being different from a biasing force when said valve element is positioned in a range for discharging low-temperature water mixture or a range for discharging high-temperature water mixture.