Patent ID: 8413951

Claim:
A valve device comprising: a housing which is attached to a pressure apparatus handling fluid, to be partially exposed from the pressure apparatus, and which has a valve passage of causing an inner space and outer space of the pressure apparatus to be connected to each other; a valve which is disposed to be displaceable in the housing, and is displaced to change an opening degree of the valve passage; temperature detecting means disposed to project from the housing into the inner space of the pressure apparatus, for detecting a temperature of the fluid in the inner space of the pressure apparatus; a sensor disposing concave portion formed on an outer peripheral surface of a portion of the housing, the sensor disposing concave portion exposed in the inner space of the pressure apparatus so as to form a part of the inner space of the pressure apparatus and surround the temperature detecting means; a signal wire member which extends from a portion of the housing exposed in the outer space of the pressure apparatus to the portion of the housing exposed in the inner space of the pressure apparatus, the signal wire member to be inserted through the housing, thereby being supported by the housing, the signal wire member further being electrically connected to the temperature detecting means; the temperature detecting means including a temperature sensing portion; wherein the temperature sensing portion is surrounded by the sensor disposing concave portion and is exposed in the inner space of the pressure apparatus; solenoid driving means including a coil, for generating a magnetic force by energization of the coil to drive the valve to be displaced by the magnetic force; and feeder wire members which extend from the portion of the housing exposed in the outer space of the pressure apparatus to a portion of the housing where the coil is disposed, to be inserted through the housing, thereby being supported by the housing, which are electrically connected to three or more different connecting points, respectively, of the coil which points are arranged in an axial direction, and which guide electric power for selectively applying a drive voltage between two of the connecting points.