EP1301759A1 - Debitmetre pourvu d'un element qui permet de reduire la formation de tourbillons dans le milieu en ecoulement - Google Patents

Debitmetre pourvu d'un element qui permet de reduire la formation de tourbillons dans le milieu en ecoulement

Info

Publication number
EP1301759A1
EP1301759A1 EP01956325A EP01956325A EP1301759A1 EP 1301759 A1 EP1301759 A1 EP 1301759A1 EP 01956325 A EP01956325 A EP 01956325A EP 01956325 A EP01956325 A EP 01956325A EP 1301759 A1 EP1301759 A1 EP 1301759A1
Authority
EP
European Patent Office
Prior art keywords
inner tube
flowing medium
line
formation
inflow opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01956325A
Other languages
German (de)
English (en)
Inventor
Thomas Lenzing
Dieter Tank
Uwe Konzelmann
Richard Joschko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1301759A1 publication Critical patent/EP1301759A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G01F1/6842—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow with means for influencing the fluid flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention is based on a device for determining at least one parameter of a medium flowing in a line according to the preamble of claim 1.
  • a device is already known from DE 197 35 664 A1, in which a plug-in sensor with a measuring element is arranged within a tube body through which the medium flows, an upstream end of the tube body extending into a filter chamber.
  • vortex formation occurs in the area of the leading edge of the inner tube, which leads to increased signal noise at the measuring element.
  • the device according to the invention with the characterizing features of claim 1 has the advantage that a reduction in the pressure drop and signal noise is achieved in a simple manner.
  • FIG. 1 shows an embodiment of a device designed according to the invention
  • FIG. 2 shows an axial cross section of FIG. 1.
  • FIG. 1 shows a device 1 designed according to the invention in a front view.
  • the device 1 consists, inter alia, of a line 5, into which a plug-in sensor 3 can be inserted, for example.
  • a medium flows in line 5 Flow direction 7, that is in a direction perpendicular to the plane of the drawing.
  • a flow straightener 9 held in line 5 is arranged upstream of plug-in sensor 3, for example.
  • a barrel ring 13 for example a short tube element, is connected to the flow straightener 9 and serves to hold an inner tube 17.
  • the barrel ring 13 has at least one strut 15 which connects the barrel ring 13 to the inner tube 17 or a deflecting grid 19 and thus the inner tube 17 is held in the flow straightener 9 or in the line 5.
  • the inner tube 17 has, for example, the deflector 19 in the region of its inflow opening 21.
  • the deflector 19 serves to reduce the exposure to a downstream measuring element 33 (FIG. 2) by foreign particles, such as liquid
  • FIG. 2 shows an axial cross section of the device 1 from FIG. 1.
  • the inner tube 17 has a central axis 18.
  • the upper part of FIG. 2 (part of the inner tube 17 between the central axis 18 and plug-in sensor 3) shows the prior art without element 11 and the lower part shows the exemplary embodiment according to the invention with element 11.
  • the inner tube 17 forms an outer leading edge 25 on the circumference of its end face 23, around which the medium flows.
  • the barrel ring 13 has an inner leading edge 27.
  • the flow straightener 9 is arranged in the flow direction 7 behind the inflow opening 21. This leads to the formation of vortices 29 in the region of the leading edge 25 according to the prior art, as is shown in FIG. 2 by a flow line 31 is indicated. This leads to an increased signal noise at the measuring element 33 and a greater pressure drop in the line 5 and in the inner tube 17.
  • An element 11 is arranged in the vicinity of the outer leading edge 25 of the inner tube 17, for example on the inner tube 17, and reduces eddy formation in the flowing medium. This can be done, for example, by applying an additional streamlined elevation to the inner tube 17, as a result of which the flowing medium is accelerated.
  • leading edge 27 of the barrel ring 13 is approximately at the same axial height as the outer leading edge 25 of the inner tube 17, these vortices 29 also no longer occur because the passage area for the flow in the line 5 is reduced and approximately at an axial height of the inflow opening 21 there is an acceleration of the flowing medium, which reduces the vortex formation or the number of vortices formed.
  • opposing vortices can also arise which compensate for the other vortices which are disruptive according to the prior art.
  • This configuration of the barrel ring 13 forms the element 11 for reducing the vortex formation. "In this way the flow in and around the inner tube 17 is stabilized and the signal noise at the measuring element 33 and the pressure drop is reduced.
  • the measuring element 33 which determines at least one parameter of a medium flowing through, is arranged inside the plug-in sensor 3.
  • Parameters of a flowing medium are, for example, the air volume flow for determining an air mass, a temperature, a pressure, a concentration of a medium component or a flow rate, which are determined by means of suitable sensors.
  • the use of the device 1 for determining other parameters is possible. This can by using two or more sensors, wherein a sensor can also determine two or more parameters.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Measuring Fluid Pressure (AREA)
  • Details Of Flowmeters (AREA)

Abstract

Les dispositifs de l'état de la technique permettant de déterminer au moins un paramètre d'un milieu en écoulement, à l'aide d'un tube interne, présentent l'inconvénient d'induire la formation de tourbillons et, par conséquent, un bruit de signal plus élevé sur l'élément de mesure, ainsi qu'une chute de pression. Le dispositif (1) selon cette invention est caractérisé en ce qu'il comprend un élément (11) qui permet de réduire la formation de tourbillons dans le milieu en écoulement.
EP01956325A 2000-07-21 2001-07-17 Debitmetre pourvu d'un element qui permet de reduire la formation de tourbillons dans le milieu en ecoulement Withdrawn EP1301759A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10035543A DE10035543C2 (de) 2000-07-21 2000-07-21 Vorrichtung zur Bestimmung zumindest eines Parameters eines strömenden Mediums
DE10035543 2000-07-21
PCT/DE2001/002669 WO2002008700A1 (fr) 2000-07-21 2001-07-17 Debitmetre pourvu d'un element qui permet de reduire la formation de tourbillons dans le milieu en ecoulement

Publications (1)

Publication Number Publication Date
EP1301759A1 true EP1301759A1 (fr) 2003-04-16

Family

ID=7649738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01956325A Withdrawn EP1301759A1 (fr) 2000-07-21 2001-07-17 Debitmetre pourvu d'un element qui permet de reduire la formation de tourbillons dans le milieu en ecoulement

Country Status (6)

Country Link
US (1) US6871533B2 (fr)
EP (1) EP1301759A1 (fr)
JP (1) JP2004505234A (fr)
KR (1) KR20020042837A (fr)
DE (1) DE10035543C2 (fr)
WO (1) WO2002008700A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006522917A (ja) * 2003-07-14 2006-10-05 ローベルト　ボツシユ　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング 導管内を流動する媒体の少なくとも１つのパラメータを測定するための装置
EP1568973A1 (fr) * 2004-02-26 2005-08-31 Signal Lux MDS S.r.l. Débitmètre thermique pour fluides
JP2010159637A (ja) * 2009-01-06 2010-07-22 Chugyoku Yo 車両エンジンの空気取り入れ導風装置
DE102010052905B4 (de) * 2010-12-01 2014-08-28 Deutsches Zentrum für Luft- und Raumfahrt e.V. Sensoreneinrichtung zur Messung einer Anströmrichtung und Auswerteeinrichtung dafür
DE102017130346A1 (de) * 2017-12-18 2019-06-19 Bürkert Werke GmbH & Co. KG Durchflussmesseinrichtung sowie Laminar-Strömungselement

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137022B1 (fr) * 1971-03-11 1976-10-13
DE3009382A1 (de) * 1980-03-12 1981-09-24 Degussa Ag, 6000 Frankfurt Vorrichtung zur messung der stroemungsgeschwindigkeiten von gasen und fluessigkeiten
DE3206433A1 (de) * 1982-02-23 1983-09-01 Bopp & Reuther Gmbh, 6800 Mannheim Verfahren zum spritzen von messeinsatzkoerpern aus kunststoff fuer wasserzaehler unterschiedlicher nennweiten
JPS60236024A (ja) * 1984-05-09 1985-11-22 Nippon Soken Inc 直熱型空気流量センサ
US5253517A (en) * 1990-05-30 1993-10-19 Siemens Aktiengesellschaft Flow converter
JP2851960B2 (ja) * 1991-12-24 1999-01-27 日本碍子株式会社 内燃機関の吸入空気量測定装置
DE19652753A1 (de) * 1996-12-18 1998-06-25 Bosch Gmbh Robert Vorrichtung zur Messung der Masse eines strömenden Mediums
DE19735664A1 (de) * 1997-08-16 1999-02-18 Bosch Gmbh Robert Filtermodul
JP3577941B2 (ja) 1998-04-02 2004-10-20 三菱電機株式会社 流量測定装置
DE19942511B4 (de) * 1999-09-07 2005-07-14 Robert Bosch Gmbh Vorrichtung zur Messung wenigstens eines Parameters eines strömenden Mediums
DE19942502A1 (de) * 1999-09-07 2001-03-08 Bosch Gmbh Robert Vorrichtung zur Messung von zumindest einem Parameter eines in einer Leitung strömenden Mediums

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0208700A1 *

Also Published As

Publication number Publication date
US6871533B2 (en) 2005-03-29
DE10035543C2 (de) 2002-06-13
KR20020042837A (ko) 2002-06-07
US20040045370A1 (en) 2004-03-11
JP2004505234A (ja) 2004-02-19
WO2002008700A1 (fr) 2002-01-31
DE10035543A1 (de) 2002-02-07

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