US 12,092,238 B2
Fluid control valve diagnostic device, fluid control device, and fluid control valve diagnostic program
Masami Nishikawa, Kyoto (JP)
Assigned to HORIBA STEC, Co., Ltd., Kyoto (JP)
Appl. No. 16/343,476
Filed by HORIBA STEC, Co., Ltd., Kyoto (JP)
PCT Filed Sep. 27, 2017, PCT No. PCT/JP2017/035040
§ 371(c)(1), (2) Date Apr. 19, 2019,
PCT Pub. No. WO2018/079173, PCT Pub. Date May 3, 2018.
Claims priority of application No. 2016-211660 (JP), filed on Oct. 28, 2016.
Prior Publication US 2019/0242493 A1, Aug. 8, 2019
Int. Cl. F16K 37/00 (2006.01); F16K 31/00 (2006.01); G05D 7/06 (2006.01)
CPC F16K 37/0041 (2013.01) [F16K 31/007 (2013.01); F16K 37/00 (2013.01); F16K 37/005 (2013.01); F16K 37/0083 (2013.01); F16K 37/0091 (2013.01); G05D 7/06 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A fluid control device comprising:
a fluid control valve that displaces a valve body to control fluid;
a flow rate measuring mechanism configured to measure a flow rate of the fluid;
a valve controller configured to control the fluid control valve on a basis of the measured flow rate;
a fully opening and fully closing signal receiver configured to receive a fully opening signal, which is an externally inputted command to fully open the fluid control valve, and configured to receive a fully closing signal, which is an externally inputted command to fully close the fluid control valve;
a diagnostic device including a circuit, the diagnostic device being configured to count a displacement of the valve body; and
memory that stores a displacement count counted by the diagnostic device, wherein
the fully opening and fully closing signal receiver is configured to command the valve controller to fully open the fluid control valve when the fully opening signal is received and to fully close the fluid control valve when the fully closing signal is received,
responsive to the fully opening and fully closing signal receiver receiving the fully opening signal, the diagnostic device adds one to the displacement count, and
responsive to the fully opening and fully closing signal receiver receiving the fully closing signal, the diagnostic device adds one to the displacement count.