Title:
SOLENOID VALVE WITH SENSOR
Document Type and Number:
Japanese Patent JP2017198246
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a solenoid valve with a sensor capable of simultaneously confirming a failure of the solenoid valve, and detecting the stopping or flowing of a fluid certainly.SOLUTION: A solenoid valve 1 with a sensor is equipped with: an actuator portion 4 which has a fixed iron core 8, a moving iron core 9, and an exciting coil 7; a solenoid valve body 2 which is equipped with a valve portion 5 formed with a valve seat 21 on which or from which a valve seat 13 abuts or separates; and a magnetic sensor 3 which detects a magnetic flux R generated by the exciting coil 7. A capacitance microphone 12 for detecting collision sound S when the moving iron core 9 is adsorbed to the fixed iron core 8 is provided on an upper surface os the solenoid valve body 2, and the magnetic sensor 3 detects changes of the magnetic flux R to detect the movement of the moving iron core 9. Abnormal condition detecting means is provided, which detects an abnormal condition of the solenoid valve body 2 according to a timing of the collision sound S and a timing of changes in the magnetic flux R.SELECTED DRAWING: Figure 3
Inventors:
HARADA RYOICHI
Application Number:
JP2016087617A
Publication Date:
November 02, 2017
Filing Date:
April 26, 2016
Export Citation:
Assignee:
CKD CORP
International Classes:
F16K31/06; F16K37/00; H01F7/16
Attorney, Agent or Firm:
Patent Business Corporation Cosmos Patent Office
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