US 10,480,669 B2 · Valve device and valve control device

Abstract

In order to suppress changes in opening level and flow rate associated with the thermal expansion of a resin member caused by a temperature change, a valve device that displaces a valve body by applying drive voltage to an actuator is adapted to include: a position sensor that detects the position of the valve body; a voltage regulator that regulates the drive voltage on the basis of a detected position by the position sensor; and a temperature sensor that detects the temperature of the valve body. In addition, the seating surface of the valve body is adapted to be formed of a resin member, and the voltage regulator is adapted to change the setting value of the drive voltage depending on detected temperature by the temperature sensor.

Claims4

Dependent claims

A valve device, comprising:

a valve body configured to be displaced by application of drive voltage to an actuator, the valve body including a seating surface that is formed of a resin member;
a position sensor that detects a position of the valve body;
a voltage regulator that regulates the drive voltage within a predetermined operable range on a basis of a detected position by the position sensor;
and
a temperature sensor that detects temperature of or around the valve body, wherein
as a detected temperature by the temperature sensor increases, the voltage regulator increases an upper limit value of the operable range.

3 more elements

Dependencies are inferred from the claim text.

Valve device and valve control device

Life of this patent

Valve device and valve control device

Life of this patent

Abstract

Claims4