Fujikin Inc.

Kengo Tsujino

Tsutomu Shinohara

Akihiro Harada

Ryutaro Tanno

Tomohiro Nakata

Yuya Suzuki

Tomoki Nakada

Hiroto Shibata

Provided is a fluid control device that is compact and that enables data regarding an internal operation of the device to be acquired. A fluid control device V is disposed in a flow path of a fluid and enables data regarding an internal operation to be acquired, the fluid control device including a sensor hoodto which one or more sensors Mfor detecting an operation in the fluid control device are attached; a valve bodyconnected to the sensor hood; a diaphragmheld below the sensor hood, inside the valve body; a cover portionthat covers the outer periphery of the sensor hood; and a circuit boardthat is electrically connected to the sensor(s) and for which a thickness direction of the circuit board and a flow path direction are arranged in the same direction on the inside of the cover portion.

Fluid control device

A valve which can accurately detect an operation of the valve is provided. The valve includes a valve body defining a fluid flow passage, a valve disk operating to be able to open and close the fluid flow passage, an actuator driving the valve disk by supplying or interrupting a working fluid, a stem transmitting a driving force of the actuator to the valve disk, a detection means detecting an opening and closing operation of the valve disk, and an elastic member fixing a ring-shaped magnetic body inserted through an end of the stem to the stem. The detection means includes the magnetic body fixed by the elastic member, and a magnetic sensor detecting a change in a magnetic field of the magnetic body.

Valve and fluid control device with a magnetic indicator

Growing community of inventors

Osaka, Japan

Kengo Tsujino