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1.发明申请公开(公告)号：US20170370752A1
公开(公告)日：2017-12-28
申请号：US15638171
申请日：2017-06-29
发明人： Shinobu TASHIRO , Keiji HANZAWA , Noboru TOKUYASU , Takeshi MORINO , Ryosuke DOI , Akira UENODAN
IPC分类号： G01F1/684 , G01F15/02 , G01F15/00 , G01F1/699 , F02D41/18 , G01F1/698 , G01F1/696 , G01F15/04 , G01F5/00
CPC分类号： G01F1/6842 , F02D41/187 , G01F1/6845 , G01F1/696 , G01F1/6965 , G01F1/698 , G01F1/699 , G01F5/00 , G01F15/006 , G01F15/02 , G01F15/04 , G01F15/043
摘要： Provided is a thermal flow meter to improve the measurement accuracy of a temperature detector provided in a thermal flow meter is a thermal flow meter to improve the measurement accuracy of a temperature detector provided in a thermal flow meter. The thermal flow meter includes a bypass passage through which a measurement target gas 30 flowing through a main passage flows, and a circuit package 400 which includes a measurement circuit for measuring a flow rate of the measurement target gas 30 flowing through the bypass passage and a temperature detecting portion 452 for detecting a temperature of the measurement target gas. The circuit package 400 includes a circuit package body which is molded by a resin to internally envelope the measurement circuit and a protrusion 424 molded by the resin. The temperature detecting portion 452 is provided in the leading end portion of the protrusion 424, and at least the leading end portion of the protrusion protrudes to the outside from a housing 302.
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公开(公告)号：US20170336232A1
公开(公告)日：2017-11-23
申请号：US15659309
申请日：2017-07-25
发明人： Shinobu TASHIRO , Keiji HANZAWA , Noboru TOKUYASU , Takeshi MORINO , Ryosuke DOI , Akira UENODAN
摘要： It is an object of the present invention to improve a measurement accuracy of a thermal flowmeter. A circuit package 401 is such that a measurement surface 430 and a backside of measurement surface 431 of a rear surface thereof are located in a bypass passage, and the bypass passage is configured to allow a measurement target gas 30 to flow upon dividing the measurement target gas 30 into a flow path 386 at a side of the measurement surface 430 of the circuit package and a flow path 387 at a side of the backside of measurement surface 431 of a rear surface of the measurement surface 430, and an inflow-side end surface of the circuit package for dividing the measurement target gas 30 has different shapes at the side of the measurement surface and at the side of the backside of measurement surface. The inflow-side end surface of the circuit package for dividing the measurement target gas 30 is formed with a reference line 700 dividing the measurement target gas 30, and an end surface 701a at the side of the measurement surface with respect to the reference line and an end surface 701b at the side of the backside of measurement surface with respect to the reference line are formed to be asymmetrical.
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公开(公告)号：US20210148743A1
公开(公告)日：2021-05-20
申请号：US16637654
申请日：2018-07-17
发明人： Akira UENODAN , Takayuki YOGO , Tsubasa WATANABE , Takahiro MIKI , Shinobu TASHIRO , Hiroaki HOSHIKA
摘要： Provided is a thermal-type flowmeter which can prevent a reduction of flow rate accuracy and reliability, and an increase of cost of the thermal-type flowmeter compared to the related art, and can add a function of an electrostatic scattering mechanism. The thermal-type flowmeter of the present invention includes a sub-passage into which part of a measurement target gas flowing in a main passage is taken, a flow rate detection element of a flow measurement unit which is disposed in the sub-passage, a circuit package which supports the flow rate detection element, and a substrate to which the circuit package is fixed. The flow rate detection element includes a detection surface to detect a flow rate of the measurement target gas. The detection surface is disposed to face the circuit substrate.
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公开(公告)号：US20190120674A1
公开(公告)日：2019-04-25
申请号：US15765939
申请日：2016-10-05
摘要： The present invention addresses the problem of obtaining a thermal flow meter capable of reducing a pulsation error by preventing a discharge port and a main outlet from being blocked by a vortex during a transient period and reducing a difference between flow speed distributions in normal and pulsation states. This thermal flow meter is provided with a housing disposed in a main passage; and a sub passage provided in the housing. In addition, in the housing, a first outlet and a second outlet of the sub passage are disposed in a downstream end portion of the housing, and a curved surface section is provided adjacent to the first and second outlets.
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公开(公告)号：US20160282162A1
公开(公告)日：2016-09-29
申请号：US14778397
申请日：2014-01-29
CPC分类号： G01F1/6847 , G01F1/6842 , G01F1/692 , G01F1/696 , G01F5/00 , G01P5/12
摘要： In order to provide a thermal flow meter capable of preventing adherence of contaminants to an air flow sensing portion, the thermal flow meter (300) of the invention includes a bypass passage for flowing a measurement target gas (30) received from a main passage (124) and an air flow sensing portion (602) for measuring a flow rate of the measurement target gas (30) by performing heat transfer with the measurement target gas (30) flowing through the bypass passage through a heat transfer surface (437). The air flow sensing portion (602) is provided to be exposed to an exposed surface (402) arranged along a flow direction of the measurement target gas (30) inside the bypass passage is embedded, the mount support surface (402) has a stage (407) formed to surround a periphery of the air flow sensing portion (602), and an inner portion surrounded by the stage protrudes more than an outer portion of the stage.
摘要翻译： 为了提供能够防止污染物与气流感测部分的粘附的热流量计，本发明的热流量计（300）包括用于使从主通道接收的测量目标气体（30）流动的旁路通道（ 124）和用于通过使流过旁通通路的测量对象气体（30）通过传热面（437）进行传热来测量测量对象气体（30）的流量的气流感测部（602）。 空气流动检测部分602被设置为暴露于沿旁路通道内部的测量目标气体30的流动方向布置的暴露表面402，安装支撑表面402具有一个阶段 （407），其形成为围绕所述气流感测部（602）的周边，并且由所述台围绕的内部部分比所述台的外部突出。
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公开(公告)号：US20150355006A1
公开(公告)日：2015-12-10
申请号：US14407775
申请日：2013-05-29
发明人： Shinobu TASHIRO , Keiji HANZAWA , Noboru TOKUYASU , Takeshi MORINO , Ryosuke DOI , Akira UENODAN
CPC分类号： G01F1/6842 , G01F1/684 , G01F1/696 , G01F15/14
摘要： It is an object of the present invention to improve a measurement accuracy of a thermal flow meter. A circuit package 401 is such that a measurement surface 430 and a backside of measurement surface 431 of a rear surface thereof are located in a bypass passage, and the bypass passage is configured to allow a measurement target gas 30 to flow upon dividing the measurement target gas 30 into a flow path 386 at a side of the measurement surface 430 of the circuit package and a flow path 387 at a side of the backside of measurement surface 431 of a rear surface of the measurement surface 430, and an inflow-side end surface of the circuit package for dividing the measurement target gas 30 has different shapes at the side of the measurement surface and at the side of the backside of measurement surface. The inflow-side end surface of the circuit package for dividing the measurement target gas 30 is formed with a reference line 700 dividing the measurement target gas 30, and an end surface 701a at the side of the measurement surface with respect to the reference line and an end surface 701b at the side of the backside of measurement surface with respect to the reference line are formed to be asymmetrical.
摘要翻译： 本发明的目的是提高热流量计的测量精度。 电路封装401使得测量表面430及其后表面的测量表面431的后侧位于旁路通道中，并且旁路通道被构造成允许测量目标气体30在划分测量目标时流动 气体30进入电路封装的测量表面430侧的流路386和测量表面430的后表面的测量表面431的后侧的流动通道387，以及流入侧端 用于划分测量目标气体30的电路封装的表面在测量表面侧和测量表面的背面侧具有不同的形状。 用于划分测量对象气体30的电路封装的流入侧端面由分配测量对象气体30的基准线700和测量表面侧的相对于基准线的端面701a形成， 在测量表面的背面侧相对于基准线的端面701b形成为不对称的。
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公开(公告)号：US20210239500A1
公开(公告)日：2021-08-05
申请号：US17052313
申请日：2019-06-19
发明人： Akira UENODAN , Takahiro MIKI , Tsutomu KONO , Akihiro YAGUCHI
摘要： To obtain a physical-quantity detection device that reduces a variation in mounting position in a main passage. A physical-quantity detection device 20 of the present invention is inserted into and disposed in a main passage 22, and includes a flange 211 fixed to a seat surface 103 of the main passage 22, and the flange 211 includes a press-fitting portion 281 for positioning with respect to a seat surface 103 side.
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公开(公告)号：US20200240822A1
公开(公告)日：2020-07-30
申请号：US16848978
申请日：2020-04-15
发明人： Noboru TOKUYASU , Shinobu TASHIRO , Keiji HANZAWA , Takeshi MORINO , Ryosuke DOI , Akira UENODAN
摘要： The present invention has been made to improve measurement accuracy of a thermal flow meter. In the thermal flow meter according to the invention, a circuit package (400) that measures a flow rate is molded in a first resin molding process. In a second resin molding process, a housing (302) having an inlet trench (351), a bypass passage trench on frontside (332), an outlet trench (353), and the like are formed through resin molding, and an outer circumferential surface of the circuit package (400) produced in the first resin molding process is enveloped by a resin in the second resin molding process to fix the circuit package (400) to the housing (302).
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公开(公告)号：US20180313680A1
公开(公告)日：2018-11-01
申请号：US15771007
申请日：2016-10-19
发明人： Masashi FUKAYA , Shinobu TASHIRO , Akira UENODAN , Tomoaki SAITO , Naoki SAITO
IPC分类号： G01F1/684
摘要： The objective is to provide a thermal flowmeter that prevents a backflow generated from a trailing vortex downstream of the thermal flowmeter from inhibiting a flow flowing out from a dust discharge port. An opening surface of a dust discharge port is formed in a position that is displaced at least with respect to the direction of a backflow of air resulting from a trailing vortex generated as a result of the flow of air at a lower end surface in which the dust discharge port is formed. The main flow in an intake pipe flows from an upstream side to a downstream side, it is possible to avoid the flow from the dust discharge port opposing head-on a backflow from a trailing vortex on the lower end surface side, and suppress a reduction in the dust discharging effect and a worsening of mass flow rate measurement errors.
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公开(公告)号：US20180017422A1
公开(公告)日：2018-01-18
申请号：US15653360
申请日：2017-07-18
发明人： Shinobu TASHIRO , Keiji HANZAWA , Noboru TOKUYASU , Takeshi MORINO , Ryosuke DOI , Akira UENODAN
IPC分类号： G01F1/684 , G01F15/14 , G01F15/04 , G01F15/02 , G01F5/00 , F02D41/18 , G01F1/699 , G01F1/698 , G01F1/696 , G01F15/18 , G01F15/00
CPC分类号： G01F1/684 , F02D41/187 , G01F1/6842 , G01F1/6845 , G01F1/696 , G01F1/6965 , G01F1/698 , G01F1/699 , G01F5/00 , G01F15/006 , G01F15/02 , G01F15/04 , G01F15/043 , G01F15/14 , G01F15/185
摘要： The present invention provides a thermal flow meter 300 which reduces a stress applied from a fixing portion 3721, which is used to hold and fix a circuit package 400 with respect to a housing 302, to the circuit package 400 and has high reliability. In the thermal flow meter of the invention, the circuit package 400 embedded with a flow rate measurement circuit is formed through a first resin molding process, the fixing portion 3721 is formed along with the housing 302 through a second resin molding process, and the circuit package 400 is enveloped by the fixing portion 3721, whereby the circuit package 400 is held by and fixed to the housing 302. In order to reduce the influence of a stress, generated based on a temperature change of the fixing portion 3721, on the circuit package 400, the fixing portion 3721 is constituted of a thick portion 4714 and a thin portion 4710. Since thickness of a resin of the thin portion 4710 is small, the stress to be generated is small, and a force applied to the circuit package 400 can be reduced.
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