Patent ID: 6189798
Filing Date: 2001-02-20
Classification: F01P,G05D

Abstract:
A valve device with a thermostat, comprising:a valve body configured to control a flow rate of a circulating liquid in a circulation channel and having a valve shaft to which a cam is fitted and via which the valve body is rotated to open and close the circulation channel;a heat responding element which expands or shrinks by sensing a temperature of the circulating liquid;a sensor case which contains the heat responding element and which is located inside the circulation channel;a sliding member placed outside the circulation channel and comprising a slidable piston rod which engages with the cam and the heat responding element such that expansion and shrinkage of said heat responding element cause a sliding motion of said piston rod and such that the sliding motion causes a rotation of the valve body via the valve shaft;a valve seat provided on an inside wall of the circulation channel, said valve seat being formed to substantially conform to a locus of the rotation of said valve body; anda supplemental turning unit to turn said valve shaft.