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公开(公告)号：US11733118B2
公开(公告)日：2023-08-22
申请号：US17655968
申请日：2022-03-22
发明人： Masahiro Hasunuma
CPC分类号： G01L19/003 , G01L7/022 , G01L7/082
摘要： Provided is a pressure detection device that can suppress variation in the pressure detection characteristics of a pressure detection unit from occurring due to individual differences in the shape of flow passage units, variation in work in mounting the flow passage unit on the pressure detection unit, or the like. The pressure detection device including: a pressure detection unit; a flow passage unit; and a mounting unit configured to removably mount the flow passage unit on the pressure detection unit. The pressure detection unit has a pressure detecting diaphragm and a sensor rod arranged at the center part of a first surface of the pressure detecting diaphragm. The flow passage unit has a flow passage diaphragm, and a displacement of the flow passage diaphragm in contact with the top surface is transmitted to the pressure detecting diaphragm via the sensor rod.
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公开(公告)号：US20220307930A1
公开(公告)日：2022-09-29
申请号：US17655959
申请日：2022-03-22
发明人： Hiroshi Imai
IPC分类号： G01L19/00
摘要： Provided is a pressure detection device including: a pressure detection unit configured to detect a pressure transmitted to a pressure detecting surface; a flow passage unit in which a pressure transmitting surface for transmitting a pressure of a fluid to the pressure detecting surface is formed; and a mounting unit for removably mounting the flow passage unit on the pressure detection unit. The pressure detection unit has a sensor unit having the pressure detecting surface, a holding unit configured to hold the sensor unit to be movable along an axis orthogonal to the pressure detecting surface, and an urging unit configured to generate urging force to urge the sensor unit toward the pressure transmitting surface. The mounting unit mounts the flow passage unit on the pressure detection unit with the pressure detecting surface being in contact with the pressure transmitting surface under urging force generated by the urging unit.
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公开(公告)号：US10746168B2
公开(公告)日：2020-08-18
申请号：US15891878
申请日：2018-02-08
发明人： Hiroshi Imai , Kazuki Hirai , Yukinobu Imai
摘要： To provide a tube pump which includes: a drive mechanism including a first roller unit and a second roller unit which rotate about an axis line while being in contact with a tube having elasticity, and a first drive unit and a second drive unit which cause the first roller unit and the second roller unit to rotate independently about the axis line; a holding mechanism which holds the tube in an arcuate shape about the axis line; and an attachment mechanism which detachably attaches the holding mechanism to the drive mechanism.
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公开(公告)号：US10528064B2
公开(公告)日：2020-01-07
申请号：US15702789
申请日：2017-09-13
发明人： Yukinobu Imai , Kazuki Hirai
摘要： There is provided a tube pump system including: a pair of roller units rotated around an axis line from a contact position to a separate position; a pair of drive units rotating the pair of roller units respectively; and a control unit controlling each of the pair of drive units. A pipe having flexibility is connected to an outflow-side end portion of the tube, and the pipe maintains a pressure of a liquid flowing through the inside of the pipe at a first predetermined pressure higher than an atmospheric pressure. The control unit controls each of the pair of drive units such that a pressure of the liquid in the tube closed due to a contact of the pair of roller units is increased to a second predetermined pressure when one of the pair of roller units passes the separate position.
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公开(公告)号：US10480672B2
公开(公告)日：2019-11-19
申请号：US15638673
申请日：2017-06-30
发明人： Atsushi Inoue
IPC分类号： F16K31/04 , F16K11/22 , G01F1/66 , G01F15/00 , G01F15/02 , G01F15/06 , G05D7/06 , F24F110/40
摘要： Provided is a flow rate adjusting device including: an ultrasonic flow metering portion; a flow rate adjusting portion; a control portion configured to control the flow rate adjusting portion so that the flow rate of the fluid measured by the ultrasonic flow metering portion matches a set value; a pressure sensor configured to measure a pressure of the fluid flowing into an upstream side of a measurement flow channel from an inflow port; and a storage portion configured to store information that associates the flow rate of the fluid obtained from the propagation time difference measured by the ultrasonic flow metering portion, the set value of the target flow rate, and the pressure measured by the pressure sensor with each other when the control portion controls the flow rate adjusting portion.
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公开(公告)号：US10422712B2
公开(公告)日：2019-09-24
申请号：US16054204
申请日：2018-08-03
发明人： Kazuo Abo , Masamichi Kobayashi
摘要： Provided is a pressure detection device, wherein a pressure detection unit includes: a pressure detecting diaphragm; a second connection portion; and four strain resistance portions. One of either a first connection portion or the second connection portion is formed of a magnet, and the other of either the first connection portion or the second connection portion is formed of a magnet or a magnetic body. The first connection portion and the second connection portion are arranged such that the first connection portion and the second connection portion are attracted by a magnetic force in a state where a flow passage unit is mounted on the pressure detection unit. The four strain resistance portions are attached to a region of a second surface of a pressure detecting diaphragm other than a center portion.
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公开(公告)号：US10281349B2
公开(公告)日：2019-05-07
申请号：US15427366
申请日：2017-02-08
发明人： Masahiro Hasunuma
摘要： Provided is a pressure detection device including a pressure detection unit configured to detect a pressure to be transmitted to a pressure sensor, and a flow channel unit on which the pressure detection unit is disposed. The pressure detection unit) includes a pressure sensor and a conductive protective film disposed in contact with the pressure sensor, the conductive protective film breaking contact between the pressure sensor and a fluid. The conductive protective film is formed of a conductive fluororesin material including a fluororesin material and a conductive material dispersed in the fluororesin material and is connected to a ground portion maintained at a ground potential.
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公开(公告)号：US10247588B2
公开(公告)日：2019-04-02
申请号：US15265419
申请日：2016-09-14
发明人： Kazuki Hirai
摘要： There is provided a Karman vortex flowmeter including: a body inside which a flow passage and a Karman vortex generation column are formed; and a flow rate measurement unit that measures Karman vortexes generated by the Karman vortex generation column to thereby obtain a flow rate of a fluid, in which the flow rate measurement unit includes: a piezoelectric element; a piezoelectric element holder that is attached to the body so that the piezoelectric element is arranged in a flow passage; and a thin film part that is formed of a material with higher corrosion resistance than an electrode of the piezoelectric element, the piezoelectric element holder houses the piezoelectric element in a state where the piezoelectric element is sandwiched by a pair of plate-shaped parts integrally formed by a resin material, and in which the thin film part is arranged between the plate-shaped parts and the electrode.
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公开(公告)号：US10173883B2
公开(公告)日：2019-01-08
申请号：US15380100
申请日：2016-12-15
IPC分类号： B67D7/02 , B65D51/16 , H01L21/306 , B67D1/00
摘要： Provided is a connector including a plug to be fixed to an inner peripheral surface of an opening of a liquid storing container, and a socket to be detachably attached to the plug. The plug includes a plug body including, formed therein, a first liquid outflow passage, a first liquid inflow passage, and a first gas passage. The socket includes: a socket body including, formed therein, a second liquid outflow passage, a second liquid inflow passage, and a second gas passage; and a ball lock mechanism that allows lock balls to be engaged with engagement grooves formed along a circumferential direction about an axial line in an outer peripheral surface of the opening of the liquid storing container and fixes the lock balls to the engagement grooves.
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