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公开(公告)号：US20160053925A1
公开(公告)日：2016-02-25
申请号：US14780404
申请日：2014-03-07
Applicant: FUJIKIN INCORPORATED , NIDEC COPAL ELECTRONICS CORPORATION
Inventor： Ryousuke DOHI , Kouji NISHINO , Nobukazu IKEDA , Masanori FUKAZAWA , Katsumi ISHIGURO
CPC classification number: F16L21/03 , F16L21/04 , F16L41/008 , G01L9/0051 , G01L19/003 , G01L19/145 , G01L19/147
Abstract: An attachment structure for a pressure detector that is such that the pressure detector is attached in an airtight manner within an insertion hole of an attachment tool main body attached to a mechanical device or pipelines, with a pipe, a gasket presser, a gasket, a split ring, and a bonnet. The configuration is such that the gasket presser and the split ring are inserted into the insertion hole of the attachment tool main body, the bonnet is inserted into the insertion hole, the bonnet is fastened to the attachment tool main body side, the gasket presser and the gasket are pressed by the split ring, and sealing portions are formed between the bottom surface of the insertion hole and one end surface of the gasket and between the tip end surface of the gasket restraint and the other end surface of the gasket.
Abstract translation: 一种用于压力检测器的附接结构，其使得压力检测器以气密的方式附接在附接到机械装置或管道的附接工具主体的插入孔中，管道，垫圈压紧件，垫圈， 开环和发动机罩。 该配置使得垫片压脚和开口环插入到附接工具主体的插入孔中，将发动机罩插入插入孔中，将发动机罩紧固到附接工具主体侧，垫圈压紧件 垫圈由开口环压紧，并且密封部分形成在插入孔的底表面和垫圈的一个端面之间以及衬垫限制器的末端表面和衬垫的另一端面之间。
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公开(公告)号：US20230400114A1
公开(公告)日：2023-12-14
申请号：US18246823
申请日：2021-10-18
Applicant: FUJIKIN INCORPORATED
Inventor： Atsushi HIDAKA , Takatoshi NAKATANI , Kazuyuki MORISAKI , Tomokazu HIROTA , Kouji NISHINO , Nobukazu IKEDA
IPC: F16K27/12
CPC classification number: F16K27/12
Abstract: [Problem] The main purpose of the present invention is to provide a casing for a fluid controller capable of enabling maintenance inside the casing even in a state where the lower part of the casing is fixed to a main body of a fluid controller, and improving maintainability.
[Solution] A casing 1 for covering devices 104,106,108 on a main body 101 of a fluid controller 100, the casing 1 is configured so as to be dividable into a plurality of parts, and the plurality of parts comprising a first part 2 provided with a fixing portion 2i for fixing to the main body 101, a second part 4 attached to the first part 2, and a third part 5 attachably and detachably provided at an upper partition higher than a predetermined height position of the casing 1.-
33.发明公开公开(公告)号：US20230152263A1
公开(公告)日：2023-05-18
申请号：US17604982
申请日：2020-04-20
Applicant: FUJIKIN INCORPORATED
Inventor： Atsushi HIDAKA , Katsuyuki SUGITA , Takatoshi NAKATANI , Kouji NISHINO , Nobukazu IKEDA
CPC classification number: G01N27/028 , F16K37/0083
Abstract: To provide a driving device including a piezoelectric element deterioration detection circuit and a deterioration detection method that enable detection of deterioration of the piezoelectric element used in the driving device, without stopping a normal operation of the driving device. The driving device 1 includes a piezoelectric element 2, a power supply unit 3, a first resistor 11, a second resistor 12, a measuring unit and a control unit, wherein resistance values of the first resistor and the second resistor are smaller than an insulating resistance value of the piezoelectric element, the measuring unit measures, a voltage across the first resistor (voltage between a first terminal 13 and a second terminal 14), in a state of supplying a predetermined voltage from the power supply unit, and the control unit 3 calculates a resistance value of the piezoelectric element from a voltage value obtained by the measurement of the measuring unit, and determines, whether or not degradation has occurred in the piezoelectric element based on the calculated resistance value.
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公开(公告)号：US20230124208A1
公开(公告)日：2023-04-20
申请号：US17905486
申请日：2021-03-04
Applicant: TOKUSHIMA UNIVERSITY , FUJIKIN INCORPORATED
Inventor： Yoshihiro DEGUCHI , Masaaki NAGASE , Kouji NISHINO , Nobukazu IKEDA
IPC: G01N21/27 , G01N21/3504 , G01N21/31
Abstract: A concentration measurement method performed in a concentration measurement device including an electric unit having a light source and a photodetector, a fluid unit having a measurement cell through which a gas flows, and a processing circuit for calculating a concentration of the gas based on an intensity of a light passing through the measurement cell. The concentration measurement method includes a step of determining an absorption coefficient of the measurement gas using a reference absorption coefficient determined in association with the reference gas and a correction factor associated with the measurement gas, and a step of obtaining a concentration of the measurement gas flowing in the measurement cell using the absorption coefficient of the measurement gas. When the absorption peak wavelength of the measurement gas is longer than the peak wavelength of the light source, a reference gas having a longer absorption peak wavelength than the peak wavelength of the light source is used, and when the absorption peak wavelength of the measurement gas is shorter than the peak wavelength of the light source, a reference gas having a shorter absorption peak wavelength than the peak wavelength of the light source is used.
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公开(公告)号：US20220172969A1
公开(公告)日：2022-06-02
申请号：US17442529
申请日：2020-03-18
Applicant: FUJIKIN INCORPORATED
Inventor： Masaaki NAGASE , Keiichi HASEGAWA , Kouji NISHINO , Nobukazu IKEDA
IPC: H01L21/67 , G01N21/3504 , G01N21/33
Abstract: A concentration measurement device 20 for measuring the concentration of the a gas flowing through a junction block 14 connected to a plurality of gas supply lines includes a light source 40 for generating light incident to a flow path formed in the junction block, a photodetector 44 for receiving light emitting from the flow path, and an arithmetic control circuit 46 for determining the concentration of the gas flowing through the flow path based on the output of the photodetector, translucent incident windows 26 and 23 for making light from the light source incident to the flow path and, at least one of the translucent emitting windows 28 and 23 for emitting light passing through the flow path being sealed and fixed to the junction block 14.
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Patent Agency Ranking
36.发明申请公开(公告)号：US20200232873A1
公开(公告)日：2020-07-23
申请号：US16063794
申请日：2016-12-15
Applicant: FUJIKIN INCORPORATED
Inventor： Masaaki NAGASE , Kaoru HIRATA , Yohei SAWADA , Kouji NISHINO , Nobukazu IKEDA
Abstract: An abnormality detection method performed using a flow rate control device including a restriction portion, a control valve, a first pressure sensor, a second pressure sensor, and a downstream valve, includes a step of changing the control valve and the downstream valve from an open state to a closed state, a step of measuring an upstream pressure or a downstream pressure in the closed state, and at least one step of (a) extracting an upstream pressure at a point when a difference between the upstream pressure and the downstream pressure reaches a predetermined value as an upstream convergence pressure, and extracting the downstream pressure as a downstream convergence pressure, and (b) extracting the time from a point when the control valve are changed to a closed state to a point when a difference between the upstream pressure and the downstream pressure reaches a predetermined value as a convergence time.
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公开(公告)号：US20200018413A1
公开(公告)日：2020-01-16
申请号：US16471103
申请日：2017-12-22
Applicant: FUJIKIN INCORPORATED
Inventor： Ryousuke DOHI , Kaoru HIRATA , Katsuyuki SUGITA , Koji KAWADA , Kouji NISHINO , Nobukazu IKEDA
Abstract: A piezoelectric-element-driven valve includes a valve seat provided on a flow path, a valving element detachably seated on the valve seat, and a piezoelectric element, and is configured to move the valve body by extension of the piezoelectric element. The piezoelectric-element-driven valve also is provided with a detection mechanism for detecting an extension amount of the piezoelectric element, the detection mechanism including a strain sensor, and being capable of detecting an movement amount of the valving element from an output of the strain sensor.
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公开(公告)号：US20190137309A1
公开(公告)日：2019-05-09
申请号：US16309697
申请日：2017-06-22
Applicant: FUJIKIN INCORPORATED
Inventor： Yohei SAWADA , Masaaki NAGASE , Kouji NISHINO , Nobukazu IKEDA
Abstract: In a method of calibrating a flow rate control device in which a flow rate is calibrated based on comparison with a flow rate measured by a flow rate reference gauge, a predetermined permissible error range is set for a plurality of flow rate settings, and the permissible error range of at least one specific flow rate setting among the plurality of flow rate settings is set to be smaller than the predetermined permissible error range.
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公开(公告)号：US20190085988A1
公开(公告)日：2019-03-21
申请号：US16080633
申请日：2017-02-23
Applicant: FUJIKIN INCORPORATED
Inventor： Toru HIRAI , Kazuyuki MORISAKI , Kaoru HIRATA , Kouji NISHINO , Nobukazu IKEDA
Abstract: The flow controller according to the present invention includes: a control valve; a first flow passage provided on the downstream side of the control valve; a second flow passage; and an expansion chamber provided between the first flow passage and the second flow passage. The second flow passage is provided in a position that is not on the extension of the first flow passage.
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公开(公告)号：US20180283914A1
公开(公告)日：2018-10-04
申请号：US15760720
申请日：2016-09-15
Applicant: FUJIKIN INCORPORATED
Inventor： Katsuyuki SUGITA , Kouji NISHINO , Kaoru HIRATA , Masahiko TAKIMOTO , Nobukazu IKEDA
Abstract: The pressure-type flow rate control device includes: a restriction part interposed in a flow channel; an upstream-side pressure sensor detecting a fluid pressure on the upstream side of the restriction part; a downstream-side pressure sensor detecting a fluid pressure on the downstream side of the restriction part; a flow control valve provided in the flow channel on the upstream side of the upstream-side pressure sensor; and computation control circuit controlling the flow control valve based on detected values of the upstream-side pressure sensor and the downstream-side pressure sensor, thereby controlling the flow. Under conditions where no fluid flow occurs in the flow channel, the computation control circuit computes the difference between the detected value of the upstream-side pressure sensor and the detected value of the downstream-side pressure sensor, and outputs a signal for pressure sensor malfunction determination based on the computed difference.
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