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公开(公告)号：US06470742B1
公开(公告)日：2002-10-29
申请号：US09359636
申请日：1999-07-26
申请人： Tomoya Yamakawa , Motohisa Taguchi
发明人： Tomoya Yamakawa , Motohisa Taguchi
IPC分类号： G01F168
CPC分类号： G01P5/10
摘要： To obtain a flow sensor having excellent responsibility, sensitivity and reliability and high flow detection accuracy by suppressing the deformation of a diaphragm, first additional patterns are formed on a side opposite to connection patterns of a heating element so that thin film patterns formed on the diaphragm become almost symmetrical, thereby suppressing the deformation of the diaphragm caused by internal stress between a base film or protective film and a platinum film forming the thin film patterns and the differences of mechanical or thermal properties therebetween.
摘要翻译： 为了通过抑制隔膜的变形来获得具有优异责任感，灵敏度和可靠性以及高流量检测精度的流量传感器，在与加热元件的连接图案相对的一侧上形成第一附加图案，使得形成在隔膜上的薄膜图案 变得几乎对称，从而抑制由基膜或保护膜与形成薄膜图案的铂膜之间的内部应力引起的隔膜的变形以及它们之间的机械或热性能的差异。
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公开(公告)号：US06615655B1
公开(公告)日：2003-09-09
申请号：US10031148
申请日：2002-01-17
申请人： Yuichi Sakai , Akira Yamashita , Motohisa Taguchi , Tomoya Yamakawa , Masahiro Kawai , Kazuhiko Tsutsumi
发明人： Yuichi Sakai , Akira Yamashita , Motohisa Taguchi , Tomoya Yamakawa , Masahiro Kawai , Kazuhiko Tsutsumi
IPC分类号： G01F168
CPC分类号： G01F1/692 , G01F1/6845
摘要： A flow rate detecting element measuring the flow rates of various fluids, particularly the intake air of an internal combustion engine. The flow rate detecting element has a thin film layer including a support film and a protective film on one surface of a flat substrate, a heating resistance section and a comparative resistance section thermosensitive resistor having patterns and located between the support film and the protective film. The flat substrate has a recess which penetrates the flat substrate in the thickness direction thereof and facing the heating resistance section and the comparative resistance section. A fluid flow passage communicates with the recess which faces the comparative resistance section for fluid flow into the recess. Flow rate or velocity of a fluid can be measured accurately using the heating resistance section according to the fluid temperature reported by the comparative resistance section.
摘要翻译： 流量检测元件，其测量各种流体的流量，特别是内燃机的进气。 流量检测元件具有在平坦基板的一个表面上包括支撑膜和保护膜的薄膜层，具有图案并位于支撑膜和保护膜之间的加热电阻部分和比较电阻部分热敏电阻器。 平面基板具有在其平坦基板的厚度方向上贯通平板状基板的面向加热电阻部和比较电阻部的凹部。 流体流动通道与面向比较电阻部分的凹部连通，以使流体流入凹部。 可以使用根据比较电阻部报告的流体温度的加热电阻部分精确地测量流体的流速或速度。
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公开(公告)号：US06886402B2
公开(公告)日：2005-05-03
申请号：US10610595
申请日：2003-07-02
申请人： Masao Kikuchi , Tomoya Yamakawa
发明人： Masao Kikuchi , Tomoya Yamakawa
CPC分类号： G01F1/6845 , F02D41/28 , F02D2200/0414 , G01F1/692 , G01K13/02 , G01K2205/02
摘要： Gas temperature detection wiring is provided with a first wiring portion disposed parallel to and in close proximity to a flow rate detector portion for a length substantially equivalent to a length of the flow rate detector portion; and a second wiring portion disposed so as to extend from the first wiring portion to an end portion of a pectinate pattern of a gas temperature detector portion. The gas temperature detection wiring is formed so as to connect electrode terminals and the gas temperature detector portion. A high-thermal-resistance portion having increased thermal resistance is constructed by reducing a width of a portion of the second wiring portion.
摘要翻译： 气体温度检测布线设置有与流量检测器部分平行并且靠近流量检测器部分的长度大致相当于流量检测器部分的长度的第一布线部分; 以及第二布线部分，其布置成从气体温度检测器部分的果胶图案的第一布线部分延伸到端部。 气体温度检测布线形成为连接电极端子和气体温度检测器部分。 通过减小第二布线部分的一部分的宽度来构造具有增加的热阻的高热阻部分。
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公开(公告)号：US06561021B2
公开(公告)日：2003-05-13
申请号：US09839534
申请日：2001-04-23
申请人： Hiroyuki Uramachi , Fumiyoshi Yonezawa , Naruki Suetake , Ryuji Tohyama , Tomoya Yamakawa , Shingo Hamada , Takeharu Oshima
发明人： Hiroyuki Uramachi , Fumiyoshi Yonezawa , Naruki Suetake , Ryuji Tohyama , Tomoya Yamakawa , Shingo Hamada , Takeharu Oshima
IPC分类号： G01F500
CPC分类号： G01F1/6842
摘要： A flow rate-measuring device capable of measuring accurately a flow rate of fluid to be measured containing a drift or eddy as compared with a conventional device is provided. A flow rate-measuring passage 11 for measuring a flow rate of the fluid to be measured is constructed so that its opening area in an upstream region communicating to an inlet 111 gradually decreases from upstream to downstream. A flow rate-detecting element 31 is disposed near an outlet in the flow rate-measuring passage 11. The device is provided with a leak flow passage 18 allowing a part of the fluid which has flown in from the inlet 111 of the flow rate-measuring passage 11 to leak out of the flow rate-measuring passage 11 at a portion upstream from an outlet 112 of the flow rate-measuring passage 11, in particular upstream from a position where the flow rate-detecting element 31 is disposed.
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公开(公告)号：US06234015B1
公开(公告)日：2001-05-22
申请号：US09285037
申请日：1999-04-01
申请人： Shingo Hamada , Tomoya Yamakawa , Fumiyoshi Yonezawa , Hiroyuki Uramachi , Takeharu Oshima , Satoru Kotoh
发明人： Shingo Hamada , Tomoya Yamakawa , Fumiyoshi Yonezawa , Hiroyuki Uramachi , Takeharu Oshima , Satoru Kotoh
IPC分类号： G01F168
摘要： A flow rate measuring device includes a flow rate measuring duct for placement in a primary passage for a fluid, extending substantially parallel to the primary passage, and a flow rate detector in the flow rate measuring duct for measuring a flow rate of the fluid in the primary passage, the flow rate measuring duct having a downstream wall including a notch or a through hole. The downstream wall may include an air-permeable member. The flow rate measuring device may include a projection on an outer wall of the flow rate measuring duct upstream of the notch, through hole, or air-permeable member, the projection extending in a circumferential direction with respect to the flow rate measuring duct.
摘要翻译： 流量测量装置包括用于放置在基本平行于主通道的流体的主通道中的流量测量管道和流量测量管道中的流量检测器，用于测量流体的流速 初级通道，流量测量管道具有包括缺口或通孔的下游壁。 下游壁可以包括透气构件。 流量测量装置可以包括在凹口，通孔或透气构件的上游的流量测量管道的外壁上的突起，该突起在相对于流量测量导管的圆周方向上延伸。
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公开(公告)号：US06189380B1
公开(公告)日：2001-02-20
申请号：US09154983
申请日：1998-09-17
申请人： Tomoya Yamakawa , Shingo Hamada , Fumiyoshi Yonezawa , Takeharu Oshima , Satoru Kotoh , Hiroyuki Uramachi
发明人： Tomoya Yamakawa , Shingo Hamada , Fumiyoshi Yonezawa , Takeharu Oshima , Satoru Kotoh , Hiroyuki Uramachi
IPC分类号： G01F168
CPC分类号： G01F1/6842
摘要： A flow rate sensor comprises a fluid passage for a fluid to flow therealong; a main body structure arranged so as to turn its front end to the upstream side of the fluid and coaxially positioned within the fluid passage; and a detecting element disposed between the main body structure and the internal surface of the fluid passage. The main body structure is formed such that its cross section perpendicular to its central axis, at first becomes gradually larger from its front end towards its rear end and then becomes gradually smaller. The detecting element includes a ceramic substrate coated with a film made of a thermo-sensitive electrically resistant material. The film is formed into a meander pattern so as to form a flow rate detecting resistance. The detecting element further includes a fluid temperature compensating resistance.
摘要翻译： 流量传感器包括用于流体流过其的流体通道; 主体结构，其布置成将其前端转动到流体的上游侧并同轴地定位在流体通道内; 以及设置在主体结构和流体通道的内表面之间的检测元件。 主体结构形成为使得其垂直于其中心轴线的截面首先从其前端朝向后端逐渐变大，然后逐渐变小。 检测元件包括涂覆有由热敏电阻材料制成的膜的陶瓷基板。 该膜形成为曲折图案，以形成流量检测电阻。 检测元件还包括流体温度补偿电阻。
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7.发明授权
公开(公告)号：US5936157A
公开(公告)日：1999-08-10
申请号：US968569
申请日：1997-11-12
CPC分类号： G01F1/692 , G01F1/6845
摘要： A thermosensitive flow rate detecting element having a flat substrate is provided with a gap having an opening on at least one side thereof for the flow of a fluid, an insulating support film provided on the one side of the substrate, a sensor unit which has a heating element for heating the fluid and a thermosensitive element for detecting temperature of the fluid provided in the upper position of the opening on the insulating support film, and a fluid temperature measuring element, provided at a distance from the sensor unit on the one side of the flat substrate, for detecting temperature of the fluid. The thermosensitive flow rate detecting element measures flow rate or flow velocity of the fluid on the basis of a temperature detected by the thermosensitive element, by keeping heating temperature of the heating element at a level higher than a temperature detected by the fluid temperature measuring element by a prescribed difference in temperature. A first notch is provided on the flat substrate near the fluid temperature measuring element and is formed by removing a part of the flat substrate from either side thereof so as not to reach the remaining side thereof.
摘要翻译： 具有平坦基板的热敏流量检测元件在其至少一侧具有用于流体流动的开口的间隙，设置在基板一侧的绝缘支撑膜，传感器单元，其具有 用于加热流体的加热元件和用于检测设置在绝缘支撑膜上的开口的上部位置的流体的温度的热敏元件和流体温度测量元件，该流体温度测量元件设置在距传感器单元一侧的距离 平板基板，用于检测流体的温度。 热敏流量检测元件通过将加热元件的加热温度保持在比流体温度测量元件检测到的温度高的水平，基于由热敏元件检测到的温度来测量流体的流速或流速，通过 规定的温差。 在液体温度测量元件附近的平坦基板上设置有第一凹口，并且通过从其任一侧去除一部分平坦基板形成，以便不到达其剩余侧面。
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公开(公告)号：US5386725A
公开(公告)日：1995-02-07
申请号：US110961
申请日：1993-08-24
申请人： Tomoya Yamakawa , Yuuji Kishimoto
发明人： Tomoya Yamakawa , Yuuji Kishimoto
CPC分类号： G01F1/6842
摘要： A heat-sensitive flow rate sensor in which a fluid shield is provided so as to cover at least part of a flow velocity probe disposed in a detecting tube, thereby preventing part of heat-sensitive resistor from being directly subjected to change in the flow velocity of a fluid. Temperature of the heat-sensitive resistor is maintained substantially constant even when the fluid flow rate has been drastically changed, thus providing good response characteristic of the flow rate sensor.
摘要翻译： 一种热敏流量传感器，其中设置流体屏蔽以覆盖设置在检测管中的流速探针的至少一部分，从而防止热敏电阻的一部分直接受到流速的变化 的流体。 即使当流体流速急剧变化时，热敏电阻器的温度也保持基本恒定，从而提供了流量传感器的良好的响应特性。
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公开(公告)号：US06871534B1
公开(公告)日：2005-03-29
申请号：US09425630
申请日：1999-10-22
申请人： Shingo Hamada , Fumiyoshi Yonezawa , Hiroyuki Uramachi , Tomoya Yamakawa , Takeharu Oshima , Satoru Kotoh
发明人： Shingo Hamada , Fumiyoshi Yonezawa , Hiroyuki Uramachi , Tomoya Yamakawa , Takeharu Oshima , Satoru Kotoh
CPC分类号： G01F5/00 , F02D41/185 , F02D41/187 , F02M35/021 , G01F1/6842
摘要： A post in a fluid passage for passing a fluid flow extends across a part of the fluid flow; a measuring duct in the post extends through the post; and a flow rate detector is located in the measuring duct. The measuring duct has a fluid introduction port with an elongated shape, the measuring duct is constricted and has at least a portion located between the fluid introduction port and the flow rate detector, substantially smoothly narrowing toward a downstream direction of the flow in a longitudinal direction of the elongated shape.
摘要翻译： 用于通过流体流动的流体通道中的柱延伸穿过流体流的一部分; 柱中的测量管延伸穿过柱; 并且流量检测器位于测量管道中。 测量管道具有细长形状的流体导入口，测量管道收缩，并且至少有一部分位于流体导入口和流量检测器之间，沿着纵向朝向流动的下游方向大致平滑地变窄 的细长形状。
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公开(公告)号：US06868722B2
公开(公告)日：2005-03-22
申请号：US10773295
申请日：2004-02-09
CPC分类号： G01F15/12 , G01F1/6842 , G01F5/00
摘要： A diversion passage is constructed into an inverted U shape in which an upstream diversion passage and a downstream diversion passage each having a passage direction in a direction of projection of a detector flow tube communicate by means of a curved portion. An inflow port is constructed by removing a portion of a wall of the upstream diversion passage on an upstream side in the main direction of flow, and removing a portion of first and second side walls of the upstream diversion passage facing each other in a direction perpendicular to the main direction of flow and the direction of projection of the detector flow tube. In addition, a wall surface on a downstream side of the upstream diversion passage in the main direction of flow at the inflow port is formed into a curved surface shape that is gradually displaced upstream relative to the direction of projection of the detector flow tube to constitute an air lead-in surface.
摘要翻译： 分流通道构造成倒U形，其中上游分流通道和下游分流通道各自具有在检测器流管的投影方向上的通过方向通过弯曲部分连通。 通过在主流动方向的上游侧除去上游引流通道的壁的一部分而形成流入口，并且将上游引流通道的第一侧壁和第二侧壁的一部分沿垂直方向 到主流动方向和检测器流管的投影方向。 另外，上游侧分流通路的流入口主流方向的下游侧的壁面形成为相对于检测器流管的投影方向向上游逐渐偏移的曲面形状 空气导入表面。
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