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1. 发明专利

JP2007113978A Heating resistor type air flow measuring instrument 有权
标题翻译：加热电阻式空气流量测量仪
公开(公告)号：JP2007113978A
公开(公告)日：2007-05-10
申请号：JP2005303819
申请日：2005-10-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOBAYASHI CHIHIRO , IGARASHI SHINYA , KATO YUKIO , IDE KIYOTOMO , MORINO TAKESHI , OKAMOTO HIROKI , SAITO TADAO
IPC分类号： G01F1/69 , G01F1/684 , G01F15/12
摘要： PROBLEM TO BE SOLVED: To secure measuring precision for a heating resistor type air flow measuring instrument, to reduce a characteristic variation caused by deposition of dust, in particular, to restrain the characteristic variation to the minimum even in case of a nano-particle size of soot (carbon). SOLUTION: The measuring precision for a flowmeter and the reduction of the dust deposition are compatible by differing an air striking angle to a heating resistor from a colliding angle of dust. For example, the heating resistor is arranged inclinedly in a downstream of a curved apex of a curved passage, the dust flies in along a direction separated toward an outside of a curve by centrifugal force, even in the light-weight of soot in a midway of the curved passage, and an air-flowing angle is differed from a collision angle with the dust flying in to collide with a heat radiation face of the heating resistor. The dust is thereby difficult to be deposited because of an air flow, by making steep a collision angle of the dust onto the heat radiation face of the heating resistor while keeping the measuring precision of the flowmeter. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题为了确保加热电阻式空气流量测量仪的测量精度，为了减少灰尘沉积引起的特性变化，特别是即使在纳米尺寸的情况下也将特性变化抑制到最小烟灰（碳）的粒径。
解决方案：流量计的测量精度和灰尘沉积的减少可以通过与灰尘的碰撞角度与加热电阻器的空气入射角不同而兼容。例如，加热电阻器倾斜地布置在弯曲通道的弯曲顶点的下游，灰尘通过离心力沿着与曲线外部分离的方向飞行，即使在中途的烟灰的重量轻并且空气流动角度与灰尘飞散的碰撞角度不同，以与加热电阻器的散热面碰撞。因此，通过在保持流量计的测量精度的同时使灰尘在加热电阻器的散热面上产生陡峭的碰撞角度，因此由于气流难以沉积灰尘。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2009122054A Flow-measuring apparatus 有权
标题翻译：流量测量装置
公开(公告)号：JP2009122054A
公开(公告)日：2009-06-04
申请号：JP2007298775
申请日：2007-11-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SAITO SUNAO , MORINO TAKESHI , OKAMOTO HIROKI , HANZAWA KEIJI , ONIKAWA HIROSHI , YASUKAWA AKIO
IPC分类号： G01F1/684 , G01F15/12
CPC分类号： G01F1/6845 , G01F5/00 , G01F15/12
摘要： PROBLEM TO BE SOLVED: To prevent a flow-measuring element of a flow measuring apparatus which is used for measuring an air flow, from damaging due to dust going into an air-intake duct. SOLUTION: A flow-measuring apparatus is equipped with an auxiliary passage 8 arranged inside a main passage through which fluid flows; and a tabular member 5, which has a pattern of a heating resistor on one face side for measuring the air flow and is disposed inside the auxiliary passage. In the tabular member, the face 5a on which the heating resistor pattern is disposed, is arranged along the flow of the fluid in the auxiliary passage. A heating resistor pattern-side fluid passage portion 8a, which is formed so that the fluid flows between the face 5a of the tabular member and a passage-forming surface 8d of the auxiliary passage, and a back-surface side fluid passage portion 8b, between a face 5b on the side opposite to the face 5b of the tabular member and a passage-forming surface 8c of the auxiliary passage, are also configured in the flow-measuring apparatus. Furthermore, a guidance portion 13 is provided on the upstream-side end of the tabular member, in order to guide the dust which collides against the end, to the back-surface side fluid passage portion 8b side. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了防止用于测量空气流量的流量测量装置的流量测量元件由于灰尘进入进气管而受到破坏。解决方案：流量测量装置具有布置在流体流过的主通道内的辅助通道8; 以及板状构件5，其在一个面侧具有用于测量空气流的加热电阻器的图案，并且设置在辅助通道内。在片状构件中，沿着辅助通道中的流体流布置布置有加热电阻器图案的面5a。形成为使得流体在平板状构件的表面5a和辅助通道的通道形成表面8d之间流动的加热电阻器图案侧流体通道部分8a和背面侧流体通道部分8b，在流量测量装置中还配置有与台状部件的表面5b相反的一侧的表面5b和辅助通道的通道形成表面8c之间。此外，为了将与端部碰撞的尘埃引导到背面侧流体通道部分8b侧，在该板状构件的上游侧端部设置有引导部13。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2009109368A Heating resistor type air flow measuring device 有权
标题翻译：加热电阻式空气流量测量装置
公开(公告)号：JP2009109368A
公开(公告)日：2009-05-21
申请号：JP2007282603
申请日：2007-10-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MORINO TAKESHI , OKAMOTO HIROKI , SAITO TADAO , HIRAYAMA HIROSHI , MIKI TAKAHIRO
IPC分类号： G01F1/684 , G01F15/12
CPC分类号： G01F1/6842 , G01F5/00
摘要： PROBLEM TO BE SOLVED: To provide a structure which prevents a particulate contaminant and a liquid contaminant, on which centrifugal separation is less likely to act, from reaching at a sensor element part. SOLUTION: A heating-resistor air flow measurement device comprises a sub passage for taking up fluid flowing in a main passage, and a plate-shaped sensing element, arranged in the sub passage, for measuring the flow rate of the fluid. The sub passage draws a curved line ranging not less than 90 degrees in a sub-passage portion locating upstream of the plate-shaped sensing element. The curved line is drawn on an imaginary plain, which is perpendicular to a sensor-forming plain of the plate-shaped sensing element and is parallel to the flow. Both the sensor-forming surface and its back surface of the plate-shaped sensing element have gaps between the walls of sub passage and themselves. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种防止离心分离不太可能发生作用的颗粒污染物和液体污染物到达传感器元件部分的结构。解决方案：一种加热电阻器空气流量测量装置，包括用于吸收在主通道中流动的子通道和布置在子通道中的板状感测元件，用于测量流体的流量。副通道在位于板状感测元件上游的副通路部分中画出不小于90度的曲线。曲线被绘制在假想平面上，该平面垂直于板状感测元件的传感器形成平面并平行于流动。传感器形成表面及其板状感测元件的后表面在子通道的壁和它们之间都具有间隙。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2008058048A Thermal flow measuring device 有权
标题翻译：热流量测量装置
公开(公告)号：JP2008058048A
公开(公告)日：2008-03-13
申请号：JP2006232981
申请日：2006-08-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIKI TAKAHIRO , KOBAYASHI CHIHIRO , OKAMOTO HIROKI
IPC分类号： G01F1/684 , F02D35/00
摘要： PROBLEM TO BE SOLVED: To provide a thermal flow measuring device 1 which prevents accumulation of a liquid such as water in a sub-passage 5 wherein a part of a fluid flows, caused by a mounting angle of the thermal flow measuring device 1. SOLUTION: In the thermal flow measuring device 1, a through passage 10 formed by combining a shape widened gradually toward a main passage 6 with a hole shape, is formed near the curvature top of the sub-passage 5 wherein a part of the fluid flows. Discharge of the liquid and prevention of water film caused by surface tension of the liquid are provided by the through passage 10. Namely, accumulation of the liquid such as water in the sub-passage 5 is prevented, and the thermal flow measuring device 1 unrestricted by the mounting angle is provided. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种热流量测量装置1，其防止液体如水流入其中一部分流体流过的子通道5中，由热流量测量装置的安装角度引起解决方案：在热流量测量装置1中，在子通道5的曲率顶部附近形成通过将形成为朝向主通道6逐渐加宽形状的孔形成的通孔10，其中，部分流体流动。通过通道10提供由液体的表面张力引起的液体的排出和防止水膜的防止。即，防止液体如水在子通道5中的积聚，并且热流量测量装置1不受限制通过提供安装角度。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2007183212A Heat resistor type fluid flow rate measuring device 有权
标题翻译：热电阻式流体流量测量装置
公开(公告)号：JP2007183212A
公开(公告)日：2007-07-19
申请号：JP2006002567
申请日：2006-01-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOBAYASHI CHIHIRO , KATO YUKIO , IDE KIYOTOMO , MORINO TAKESHI , OKAMOTO HIROKI
IPC分类号： G01F1/684 , G01F1/68 , G01F15/12
摘要： PROBLEM TO BE SOLVED: To provide a fluid flow rate measuring device capable of suppressing a change in the output characteristics of a heat resistor caused by adhesion etc. of a liquid such as water to the inside of a sub-air passage where the heat resistor is installed, in a low flow speed range. SOLUTION: The sub-air passage 110 includes a first sub-air passage 110 starting from a sub-air passage inlet 111 in a quadrangular shape and having a bent passage portion 113, an outlet portion 112, and a second sub-air passage 114 being between the passage inlet 111 and the bent portion 113. The first passage 110 includes an inner circulative surface portion 125, an outer circulative surface portion 123, and both side surface portions 117, 118. One wall surface of the second passage 114 is formed of a part of an inclined surface 116, and another wall surface 122 faces the one wall surface and is approximately parallel. If water enters the first passage 110 and a flow speed changes rapidly from a high flow speed state to a low flow speed state, waterdrops are not moved by an air flow, are collected by gravity in the ground direction along the inclined surface 116, and are discharged outside from the second passage 114. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种流体流量测量装置，其能够抑制由诸如水的液体的粘附等引起的热电阻器的输出特性的变化到副空气通道的内部，热电阻器安装在低流速范围内。副空气通道110包括从副空气通道入口111以四边形开始并具有弯曲通道部分113，出口部分112和第二子空气通道110的第一副空气通道110。空气通道114位于通道入口111和弯曲部分113之间。第一通道110包括内部循环表面部分125，外部循环表面部分123和两个侧表面部分117,118。第二通道的一个壁表面 114由倾斜表面116的一部分形成，另一个壁表面122面向一个壁表面并且大致平行。如果水进入第一通道110并且流速从高流速状态快速变化到低流速状态，则水滴不会被空气流移动，沿着倾斜表面116沿着地面方向重力收集，从第二通道114向外排出。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2007298481A Flow measuring instrument 有权
标题翻译：流量测量仪
公开(公告)号：JP2007298481A
公开(公告)日：2007-11-15
申请号：JP2006128863
申请日：2006-05-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OKAMOTO HIROKI , IGARASHI SHINYA , KOBAYASHI CHIHIRO , IDE KIYOTOMO , MORINO TAKESHI
IPC分类号： G01F1/684 , F02D35/00 , G01F1/00 , G01F1/68
CPC分类号： G01F1/72 , G01F1/6842 , G01F5/00
摘要： PROBLEM TO BE SOLVED: To provide a thermal type flow measuring instrument capable of restraining an output from dropping to a minus side, although the output drops to the minus side in an abrupt change of a flow rate, in a conventional flow measuring instrument provided with a sub-air-passage having a thermal type flow measuring instrument by-pass passage and having a hole in this side of a flow measuring part. SOLUTION: A slit hole is opened in a downstream of a flow detecting element positioned in a downstream after passage bypass. The slit hole may be positioned between the flow detecting element and an outlet part, and may be favorably drilled between a wall face side and a recessed portion. The output is restrained from dropping to the minus side in leading-up, by this manner. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种能够抑制输出下降到负侧的热式流量测量装置，尽管在传统的流量测量中，输出在流量的急剧变化中下降到负侧设置有具有热式流量测量仪器旁通通道并且在流量测量部件的该侧面具有孔的副空气通道的仪器。解决方案：在通过旁路位于下游的流量检测元件的下游，开口狭缝孔。狭缝孔可以位于流量检测元件和出口部之间，并且可以有利地在壁面侧和凹部之间钻孔。通过这种方式，输出被限制在前导中的负侧。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2008145241A Heating resistor type gas flow-rate measuring device 审中-公开
标题翻译：加热电阻式气体流量测量装置
公开(公告)号：JP2008145241A
公开(公告)日：2008-06-26
申请号：JP2006332080
申请日：2006-12-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOBAYASHI CHIHIRO , KATO YUKIO , IDE KIYOTOMO , MORINO TAKESHI , OKAMOTO HIROKI
IPC分类号： G01F1/684
摘要： PROBLEM TO BE SOLVED: To provide a heating resistor type gas flow-rate measuring device capable of accurately and stably measuring gas flow-rate over a long term with preventing from depositing of salt on the heating resistor and minimizing variation of properties of the heating resistor in a heating resistor type gas flow-rate measuring device which measures gas flow-rate based on the heat release quantity from the heating resistor when making heating current flow to heat the heating resistor at high temperature. SOLUTION: A heating resistor type gas flow-rate measuring device measures gas flow-rate based on the heat release quantity from a heating resistor 3 by carrying heating current to the heating resistor to heat it up to over 120°C. The heat generation resistor 3 is fixed and supported by the lead member 5 composed of a conductive member. A shelter 7 is arranged at the upstream side of the lead member, and when the heating resistor type gas flow-rate measuring device is being driven, the place of the lead member, of which surface temperature is about 100°C, is shielded by the shelter 7. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过防止在加热电阻器上沉积盐并且最小化特性的变化而能够长期准确稳定地测量气体流速的发热电阻器型气体流量测量装置加热电阻式气体流量测量装置中的加热电阻器，其在使加热电流流动时基于来自加热电阻器的放热量来测量气体流量，以在高温下加热发热电阻器。解决方案：加热电阻器类型的气体流量测量装置通过将加热电流传递到加热电阻器将其加热到超过120℃，根据来自加热电阻器3的放热量来测量气体流量。发热电阻体3被由导电部件构成的引线部件5固定并支撑。在引线部件的上游侧设置有防护罩7，在加热电阻式气体流量测量装置被驱动时，表面温度为约100℃的引线部件的位置被避风港7.版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2008058128A Thermal type gas flow measuring apparatus 有权
标题翻译：热式气体流量测量装置
公开(公告)号：JP2008058128A
公开(公告)日：2008-03-13
申请号：JP2006234855
申请日：2006-08-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MORINO TAKESHI , KOBAYASHI CHIHIRO , HIKODA MARI , KATO YUKIO , IDE KIYOTOMO , OKAMOTO HIROKI
IPC分类号： G01F1/684 , G01F1/00 , G01F1/68 , G01F1/72
摘要： PROBLEM TO BE SOLVED: To reduce an increased error while maintaining a centrifugation effect of a roundabout section in a secondary channel. SOLUTION: In an air flowmeter employing a roundabout structure on the upstream side of a heating resistor in the secondary channel, a step 105 is disposed near an exit part of the secondary channel as shown in Fig.1-a. Therefore, the channel resistance in the secondary channel is increased, and such the characteristic is obtained that the higher the flow rate is, the slower the flow velocity is in the vicinity of the heating resistor. According to this effect, the pressure loss in the secondary channel can be changed while maintaining the function of the centrifugation by disposing the step on the downstream side of the heating resistor, thereby improving its pulsation characteristic. Therefore, a pulsation error can be improved without impairing any inertial force of roundabout channels. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了减少在第二通道中保持迂回部分的离心效应的增加的误差。解决方案：在第二通道中的加热电阻器的上游侧采用回旋结构的空气流量计中，如图1-a所示，在第二通道的出口部分附近设置步骤105。因此，次级通道中的通道电阻增加，并且获得流量越高，流速在加热电阻器附近越慢的特性。根据该效果，通过在加热电阻体的下游侧配置台阶，能够保持二次流路的压力损失，同时保持离心功能，从而提高其脉动特性。因此，可以在不损害迂回通道的任何惯性力的情况下提高脉动误差。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2007327790A Heat generation resistor type flow measuring instrument 有权
标题翻译：热发生电阻型流量测量仪器
公开(公告)号：JP2007327790A
公开(公告)日：2007-12-20
申请号：JP2006157729
申请日：2006-06-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIKODA MARI , OKAMOTO HIROKI , MORINO TAKESHI , SAITO TADAO
IPC分类号： G01F1/684
摘要： PROBLEM TO BE SOLVED: To reduce a flow measuring error generated in a heat generation resistor type flow measuring instrument by generation of a pulsation phenomenon in travel of a vehicle. SOLUTION: This heat generation resistor type flow measuring instrument of the present invention having a sub-passage having at least one sub-passage bypass part in a midway with one part of a fluid flowing in a main passage, which flows in from a sub-passage inlet part and flowing out to a sub-passage outlet part, and a measuring element for measuring a suction flow rate arranged in the sub-passage, includes a through hole located between the sub-passage inlet part and the measuring element, provided on a wall face constituting the sub-passage, and penetrated through the sub-passage and the main passage. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过产生车辆行驶中的脉动现象来减少在发热电阻器型流量测量仪中产生的流量测量误差。解决方案：本发明的这种发热电阻型流量测量仪具有一个副通道，该副通路在中途具有至少一个副通道旁路部分，其中一部分流体在主通道中流动，子通道入口部分并且流出到子通道出口部分，以及用于测量设置在子通道中的吸入流量的测量元件，包括位于子通道入口部分和测量元件之间的通孔设置在构成子通道的壁面上，并穿过子通道和主通道。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2007285950A Heating resistor type air flowmeter 审中-公开
标题翻译：加热电阻式空气流量计
公开(公告)号：JP2007285950A
公开(公告)日：2007-11-01
申请号：JP2006115136
申请日：2006-04-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOBAYASHI CHIHIRO , IGARASHI SHINYA , KATO YUKIO , IDE KIYOTOMO , MORINO TAKESHI , OKAMOTO HIROKI
IPC分类号： G01F1/698 , F02D35/00 , G01F1/684 , G01F1/69
摘要： PROBLEM TO BE SOLVED: To minimize a property change of a heating resistor type air flowmeter, by reducing adhesion of oil components generated, especially by PCV, EGR, etc. aimed at securing measurement accuracy of the flowmeter and reducing the characteristic changes due to dust adhesion. SOLUTION: The heating temperature of a heating resistor for suction air is set at 230-290°C. Thus, even when oil is dispersed, the oil evaporates in short time. It is also possible to guarantee long-term accuracy, in terms of the reliability of an ON/OFF repeating test or the like. COPYRIGHT: (C)2008,JPO&INPIT

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